Urban waste water treatment per province and river basin district

Urban waste water treatment per province and river basin district

Periods Regions Urban waste water treatment plants Numbers by type Total number (number) Urban waste water treatment plants Numbers by type Trickling filters (number) Urban waste water treatment plants Numbers by type Aeration tanks (number) Urban waste water treatment plants Numbers by type Oxidation tanks (number) Urban waste water treatment plants Numbers by type Oxidation ditches (number) Urban waste water treatment plants Numbers by type Carrousels (number) Urban waste water treatment plants Numbers by type Discontinuous systems (number) Urban waste water treatment plants Numbers by type Parallel installations (number) Urban waste water treatment plants Numbers by type Multi-stage installations (number) Urban waste water treatment plants Numbers by type Compact installations (number) Urban waste water treatment plants Numbers by type Nereda granular sludge reactor (number) Urban waste water treatment plants Numbers by type Hybrid Nereda - active sludge system (number) Urban waste water treatment plants Capacity pollution equivalents by type Total capacity pollution equivalents (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Trickling filters (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Aeration tanks (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Oxidation tanks (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Oxidation ditches (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Carrousels (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Discontinuous systems (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Parallel installations (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Multi-stage installations (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Compact installations (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Nereda granular sludge reactor (1 000 pollution equivalent) Urban waste water treatment plants Capacity pollution equivalents by type Hybrid Nereda - active sludge system (1 000 pollution equivalent) Influent waste water Quantities Volume waste water (1 000 m3) Influent waste water Quantities Pollution Equivalents (1 000 pollution equivalent) Influent waste water Quantities Chemical oxygen demand (COD) (1 000 kg) Influent waste water Quantities Biochemical oxygen demand (BOD) (1 000 kg) Influent waste water Quantities Nitrogen compounds as N (total) (1 000 kg) Influent waste water Quantities Phosphorus compounds as P (total) (1 000 kg) Influent waste water Quantities Copper (kg) Influent waste water Quantities Chromium (kg) Influent waste water Quantities Zinc (kg) Influent waste water Quantities Lead (kg) Influent waste water Quantities Cadmium (kg) Influent waste water Quantities Nickel (kg) Influent waste water Quantities Mercury (kg) Influent waste water Quantities Arsenic (kg) Discharge of waste water (effluent) Quantities Volume waste water (1 000 m3) Discharge of waste water (effluent) Quantities Pollution Equivalents (1 000 pollution equivalent) Discharge of waste water (effluent) Quantities Chemical oxygen demand (COD) (1 000 kg) Discharge of waste water (effluent) Quantities Biochemical oxygen demand (BOD) (1 000 kg) Discharge of waste water (effluent) Quantities Nitrogen compounds as N (total) (1 000 kg) Discharge of waste water (effluent) Quantities Phosphorus compounds as P (total) (1 000 kg) Discharge of waste water (effluent) Quantities Copper (kg) Discharge of waste water (effluent) Quantities Chromium (kg) Discharge of waste water (effluent) Quantities Zinc (kg) Discharge of waste water (effluent) Quantities Lead (kg) Discharge of waste water (effluent) Quantities Cadmium (kg) Discharge of waste water (effluent) Quantities Nickel (kg) Discharge of waste water (effluent) Quantities Mercury (kg) Discharge of waste water (effluent) Quantities Arsenic (kg) Sewage sludge Wet sewage sludge by destination Total wet sludge (1 000 kg) Sewage sludge Wet sewage sludge by destination Agriculture (1 000 kg) Sewage sludge Wet sewage sludge by destination Wet oxidation (1 000 kg) Sewage sludge Wet sewage sludge by destination Composting (1 000 kg) Sewage sludge Wet sewage sludge by destination Landfill (1 000 kg) Sewage sludge Wet sewage sludge by destination Incineration (1 000 kg) Sewage sludge Wet sewage sludge by destination Cement industry (1 000 kg) Sewage sludge Wet sewage sludge by destination Co-incineration at power plants (1 000 kg) Sewage sludge Wet sewage sludge by destination Other destinations (1 000 kg) Sewage sludge Dry solids by destination Total dry solids (1 000 kg) Sewage sludge Dry solids by destination Agriculture (1 000 kg) Sewage sludge Dry solids by destination Wet oxidation (1 000 kg) Sewage sludge Dry solids by destination Composting (1 000 kg) Sewage sludge Dry solids by destination Landfill (1 000 kg) Sewage sludge Dry solids by destination Incineration (1 000 kg) Sewage sludge Dry solids by destination Cement industry (1 000 kg) Sewage sludge Dry solids by destination Co-incineration at power plants (1 000 kg) Sewage sludge Dry solids by destination Other destinations (1 000 kg) Sewage sludge Nutrients and heavy metals Ashes (1 000 kg) Sewage sludge Nutrients and heavy metals Nitrogen compounds as N (1 000 kg) Sewage sludge Nutrients and heavy metals Phosphorus compounds as P (1 000 kg) Sewage sludge Nutrients and heavy metals Copper (kg) Sewage sludge Nutrients and heavy metals Chromium (kg) Sewage sludge Nutrients and heavy metals Zinc (kg) Sewage sludge Nutrients and heavy metals Lead (kg) Sewage sludge Nutrients and heavy metals Cadmium (kg) Sewage sludge Nutrients and heavy metals Nickel (kg) Sewage sludge Nutrients and heavy metals Mercury (kg) Sewage sludge Nutrients and heavy metals Arsenic (kg)
1990 Nederland 469 48 65 57 119 97 22 9 34 4 . . . . . . . . . . 1,642,646 . 932,832 348,630 81,273 14,357 177,145 38,733 497,455 96,356 2,049 32,675 1,049 4,943 1,642,646 . 131,495 23,645 39,292 6,239 36,492 13,130 140,282 25,149 820 19,474 315 2,471 4,859,804 1,621,964 0 446,575 2,704,575 78,152 0 0 8,538 315,266 81,602 0 63,280 158,107 11,654 0 0 623 127,156 15,900 7,066 140,084 25,553 351,411 70,674 1,213 13,030 691 2,409
2000 Nederland 391 11 52 67 84 125 8 13 31 0 . . . . . . . . . . 1,996,779 . 920,719 353,527 84,726 13,300 156,891 22,707 438,782 59,425 1,030 25,394 511 5,801 1,996,779 . 91,033 11,284 28,952 2,845 17,846 5,035 100,897 8,555 471 12,037 143 2,787 1,426,447 0 287,900 161,739 155,255 778,051 0 0 43,501 336,361 0 14,355 39,452 64,147 180,493 0 0 37,913 128,336 15,962 7,258 130,891 17,322 319,070 51,466 544 11,036 404 3,017
2010 Nederland 349 6 61 61 63 115 2 18 21 1 30,365 308 10,577 3,867 1,348 9,307 49 1,925 2,865 91 1,934,310 24,745 953,490 370,007 87,866 13,880 145,405 17,391 460,409 36,893 803 20,905 319 6,295 1,934,310 2,036 75,461 8,012 16,586 2,226 8,842 2,897 85,375 3,901 232 9,367 87 2,848 1,321,586 0 0 0 0 874,505 155,551 265,488 26,042 332,601 0 0 0 0 199,674 64,758 65,717 2,452 110,086 18,736 11,101 132,552 13,715 348,041 39,757 468 11,020 265 3,276
2020 Nederland 315 2 58 56 44 118 1 10 14 1 9 2 29,713 108 10,152 4,615 1,133 9,884 40 956 1,598 91 774 363 1,938,476 27,031 1,056,480 428,585 93,686 13,297 133,000 14,130 433,742 28,269 435 17,391 194 6,449 1,938,476 1,986 72,302 7,512 14,320 1,644 9,156 1,862 68,981 1,244 82 7,143 26 2,603 1,263,335 0 0 0 5,613 1,063,157 14,514 126,468 53,582 308,360 0 0 0 1,480 250,382 13,614 30,765 12,119 91,789 19,111 11,170 120,715 12,003 325,845 25,755 311 7,939 143 3,247
2021 Nederland 313 1 57 56 42 119 2 10 14 1 9 2 29,957 54 10,225 4,585 1,111 10,058 91 956 1,598 91 827 363 1,963,884 26,781 1,039,561 438,139 93,852 13,120 . . . . . . . . 1,963,884 1,998 72,524 8,217 14,379 1,681 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1990 The river Eems 29 3 2 4 8 5 2 0 4 0 . . . . . . . . . . 72,404 . 33,942 11,045 3,247 517 7,805 678 16,523 3,352 53 670 51 409 72,404 . 4,724 583 1,553 187 1,608 230 4,660 875 21 399 15 205 147,935 132,393 0 0 14,642 0 0 0 900 10,391 5,745 0 0 4,604 0 0 0 42 4,176 511 455 5,270 423 11,533 2,421 30 264 35 206
2000 The river Eems 21 1 2 4 4 7 0 0 3 0 . . . . . . . . . . 68,452 . 30,038 11,495 3,098 410 4,500 405 11,842 1,361 20 501 12 128 68,452 . 4,376 637 1,160 91 360 86 2,546 150 8 227 3 64 41,385 0 0 0 39,695 0 0 0 1,690 11,234 0 0 0 11,179 0 0 0 54 4,251 568 290 5,140 373 10,772 1,412 14 304 9 75
2010 The river Eems 16 0 7 3 0 4 0 0 2 0 1,140 0 370 102 0 272 0 0 396 0 79,026 890 33,371 13,263 3,370 461 5,604 667 13,988 1,745 17 888 13 312 79,026 103 3,663 458 733 58 346 121 2,009 158 6 253 4 180 53,013 0 0 0 0 0 53,013 0 0 12,490 0 0 0 0 0 12,490 0 0 5,038 828 535 5,454 353 12,032 1,233 14 284 11 150
2020 The river Eems 16 0 7 3 0 4 0 0 1 0 0 1 1,134 0 366 102 0 270 0 0 56 0 0 340 78,835 959 38,332 14,910 3,129 440 6,775 482 15,832 914 11 429 12 188 78,835 121 4,683 475 713 62 461 58 1,557 35 2 164 3 64 48,346 0 0 0 0 48,346 0 0 0 11,574 0 0 0 0 11,574 0 0 0 4,583 927 416 5,347 405 12,500 1,030 9 338 5 208
2021 The river Eems 16 0 7 3 0 4 0 0 1 0 0 1 1,134 0 366 102 0 270 0 0 56 0 0 340 79,430 986 40,317 14,551 3,003 463 . . . . . . . . 79,430 105 4,039 556 643 58 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1990 The river Rijn (North Rijn) 43 4 2 6 7 20 1 2 1 0 . . . . . . . . . . 82,303 . 48,584 17,686 3,729 647 7,316 1,828 21,433 3,977 47 1,309 39 300 82,303 . 6,735 763 1,676 260 1,507 620 6,044 1,038 19 780 12 150 196,319 136,330 0 26,060 33,284 0 0 0 645 18,563 6,070 0 1,199 11,267 0 0 0 28 8,422 828 373 5,260 1,179 14,539 2,762 26 514 26 136
2000 The river Rijn (North Rijn) 43 2 1 6 6 24 0 2 2 0 . . . . . . . . . . 102,689 . 42,947 15,380 3,981 689 6,061 830 18,151 2,422 27 798 17 330 102,689 . 5,631 564 1,024 150 485 176 3,902 266 11 362 5 165 57,969 0 0 0 57,602 0 0 0 367 14,608 0 0 0 14,596 0 0 0 11 5,843 446 297 4,824 628 11,760 1,870 15 394 10 117
2010 The river Rijn (North Rijn) 41 2 0 5 4 25 1 1 2 1 1,595 63 0 124 44 1,059 40 17 158 91 101,291 1,131 43,275 17,326 4,081 652 6,177 903 21,156 1,842 29 737 13 344 101,291 113 4,395 342 655 96 381 175 4,269 188 11 294 4 164 62,980 0 0 0 0 0 62,980 0 0 15,833 0 0 0 0 0 15,833 0 0 5,700 922 437 5,114 686 15,163 1,498 17 416 8 159
2020 The river Rijn (North Rijn) 38 1 0 5 4 24 1 1 1 1 0 0 1,521 54 0 178 45 1,054 40 17 41 91 0 0 105,753 1,243 47,463 19,412 4,543 639 5,599 888 18,260 1,356 19 580 10 322 105,753 100 4,013 313 494 81 377 83 3,007 64 7 199 3 158 71,852 0 0 0 0 71,852 0 0 0 15,285 0 0 0 0 15,285 0 0 0 4,404 1,045 577 4,308 577 11,718 1,117 10 347 5 99
2021 The river Rijn (North Rijn) 38 1 0 5 4 24 1 1 1 1 0 0 1,521 54 0 178 45 1,054 40 17 41 91 0 0 109,065 1,285 48,929 20,408 4,694 668 . . . . . . . . 109,065 110 4,323 367 562 75 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1990 The river Rijn (East Rijn) 79 4 15 7 24 15 0 4 8 0 . . . . . . . . . . 247,822 . 157,839 59,158 13,470 2,421 26,627 6,256 69,906 12,528 195 4,574 138 481 247,822 . 20,162 3,204 5,934 1,100 5,485 2,121 19,713 3,270 78 2,726 41 240 544,601 443,788 0 27,856 72,710 0 0 0 247 46,730 20,918 0 5,029 20,772 0 0 0 11 18,344 2,469 1,104 22,762 4,191 51,928 9,568 121 1,892 99 270
2000 The river Rijn (East Rijn) 67 1 12 9 18 15 0 4 8 0 . . . . . . . . . . 282,040 . 149,902 55,634 13,657 2,160 22,861 4,822 78,678 9,149 98 3,363 62 567 282,040 . 12,532 1,160 3,879 527 2,050 850 18,031 931 33 1,560 15 293 327,287 0 148,553 97,189 17,856 63,650 0 0 39 49,008 0 5,923 24,132 4,625 14,328 0 0 1 19,035 2,168 1,214 23,965 4,067 52,658 8,485 80 1,675 69 238
2010 The river Rijn (East Rijn) 60 0 13 11 13 11 0 5 6 0 4,680 0 1,297 1,135 253 1,069 0 586 310 0 258,577 3,816 150,058 55,253 12,877 2,075 18,688 1,917 81,153 4,420 47 2,755 26 458 258,577 316 11,495 1,031 2,336 422 1,262 319 15,525 466 17 1,142 5 201 232,671 0 0 0 0 46,441 0 169,778 16,452 51,657 0 0 0 0 10,495 0 40,369 793 17,628 2,744 1,812 15,387 2,475 46,219 3,416 54 2,772 33 429
2020 The river Rijn (East Rijn) 73 0 13 14 13 23 0 2 5 0 2 1 6,849 0 1,509 1,742 314 2,814 0 190 186 0 72 23 365,571 6,114 239,818 97,276 21,032 2,974 26,145 2,790 104,541 6,002 90 3,171 39 1,214 365,571 381 13,503 1,079 2,773 299 1,849 332 16,472 242 9 1,167 2 429 281,660 0 0 0 5,613 162,661 0 84,808 28,579 62,425 0 0 0 1,480 33,037 0 21,077 6,830 19,007 3,867 2,211 23,488 2,468 73,538 4,661 62 1,704 30 563
2021 The river Rijn (East Rijn) 73 0 13 14 13 23 0 2 5 0 2 1 6,819 0 1,515 1,707 314 2,814 0 190 186 0 70 23 372,917 6,200 241,154 99,079 21,609 2,993 . . . . . . . . 372,917 397 14,128 1,064 2,806 316 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1990 The river Rijn (Central Rijn) 30 7 4 2 10 5 0 0 2 0 . . . . . . . . . . 93,356 . 55,889 19,746 4,949 892 7,943 1,962 27,365 4,436 66 1,649 60 557 93,356 . 6,302 978 2,279 304 1,636 665 7,717 1,158 26 983 18 278 233,155 192,022 0 16,619 24,514 0 0 0 0 19,590 10,735 0 2,252 6,604 0 0 0 0 8,237 970 489 5,219 1,119 15,098 2,607 31 564 34 235
2000 The river Rijn (Central Rijn) 19 0 2 3 1 10 0 1 2 0 . . . . . . . . . . 113,100 . 56,208 21,629 5,234 812 8,406 2,352 29,551 4,728 135 1,178 32 315 113,100 . 4,310 412 1,091 104 995 678 5,175 751 59 552 11 129 182,340 0 123,877 4,095 0 54,368 0 0 0 20,801 0 7,504 1,235 0 12,063 0 0 0 7,853 1,055 508 5,999 793 18,843 2,712 35 375 26 231
2010 The river Rijn (Central Rijn) 18 0 3 1 1 11 0 1 1 0 2,141 0 360 48 20 1,538 0 161 15 0 116,264 1,946 75,812 27,330 6,724 1,054 6,480 720 24,355 1,691 35 1,083 18 486 116,264 115 4,114 338 1,017 85 370 119 5,765 202 12 460 4 184 86,247 0 0 0 0 60,294 0 25,953 0 19,645 0 0 0 0 13,016 0 6,629 0 6,320 1,081 691 6,082 664 22,090 1,786 19 511 17 178
2020 The river Rijn (Central Rijn)
2021 The river Rijn (Central Rijn)
1990 The river Rijn (West Rijn) 177 25 23 21 34 34 15 3 9 3 . . . . . . . . . . 703,916 . 372,688 138,122 34,842 5,734 71,787 10,334 211,511 44,910 1,245 9,632 522 1,962 703,916 . 63,512 13,709 18,418 2,807 14,788 3,503 59,646 11,722 498 5,741 157 981 2,936,042 360,768 0 212,321 2,299,675 57,317 0 0 5,961 108,859 21,904 0 34,870 43,691 7,883 0 0 511 42,286 6,048 2,474 56,514 6,365 149,040 33,004 731 3,696 323 967
2000 The river Rijn (West Rijn) 150 6 19 27 30 48 5 5 10 0 . . . . . . . . . . 877,465 . 394,421 152,746 37,227 5,677 60,531 6,732 177,574 27,255 371 9,635 226 2,791 877,465 . 38,840 5,432 14,131 1,170 5,407 1,402 41,610 3,613 148 4,320 62 1,295 461,943 0 15,470 60,455 35,525 327,708 0 0 22,785 142,471 0 928 14,085 32,379 74,315 0 0 20,763 53,166 7,000 2,851 53,939 4,869 139,031 24,579 244 3,818 198 1,541
2010 The river Rijn (West Rijn) 136 4 16 27 24 48 0 11 6 0 13,275 245 4,841 1,644 244 3,736 0 1,161 1,403 0 847,482 10,387 391,678 156,219 38,729 5,878 62,468 6,629 186,164 17,234 366 7,158 163 3,291 847,482 812 29,803 3,365 7,221 924 3,295 1,036 28,570 1,716 129 3,347 48 1,358 546,101 0 0 0 0 463,822 18,406 54,283 9,590 137,603 0 0 0 0 103,844 17,075 15,025 1,659 44,072 7,970 4,600 60,494 4,922 153,894 18,968 162 3,684 126 1,704
2020 The river Rijn (West Rijn) 116 1 17 24 11 49 0 6 6 0 2 0 12,860 54 4,602 1,963 153 4,016 0 662 952 0 459 0 868,245 11,879 462,761 189,110 41,499 5,684 57,983 5,674 169,235 13,717 160 6,423 88 3,110 868,245 826 29,325 2,995 6,282 733 3,549 733 23,990 567 42 2,782 14 1,289 573,616 0 0 0 0 506,953 0 41,660 25,003 140,822 0 0 0 0 125,846 0 9,688 5,288 37,845 8,770 4,977 54,156 4,670 139,057 12,467 119 3,008 67 1,720
2021 The river Rijn (West Rijn) 114 0 16 24 9 50 1 6 6 0 2 0 13,096 0 4,641 1,968 130 4,190 51 662 952 0 502 0 863,197 11,614 447,779 195,755 41,278 5,613 . . . . . . . . 863,197 839 29,747 3,529 6,391 776 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1990 The river Maas 80 3 15 5 28 16 3 0 10 0 . . . . . . . . . . 372,227 . 222,165 88,592 17,291 3,493 48,340 16,491 131,745 23,796 395 13,867 211 958 372,227 . 25,267 3,833 7,557 1,298 9,958 5,591 37,152 6,211 158 8,264 63 479 680,381 279,923 0 163,719 215,119 20,835 0 0 785 98,486 12,608 0 19,930 62,146 3,771 0 0 31 40,618 4,414 1,906 39,387 11,470 96,561 17,987 244 5,737 153 494
2000 The river Maas 65 0 14 7 19 18 1 0 6 0 . . . . . . . . . . 458,597 . 210,180 83,164 17,911 2,951 47,094 6,285 106,096 11,968 324 8,949 150 1,151 458,597 . 20,552 2,588 5,905 664 7,835 1,534 25,224 2,462 188 4,588 43 588 293,043 0 0 0 254 274,319 0 0 18,471 82,621 0 0 0 189 65,352 0 0 17,079 30,230 4,153 1,647 31,124 5,968 73,118 10,537 135 4,016 81 598
2010 The river Maas 57 0 14 7 18 14 0 0 4 0 6,217 0 2,686 599 759 1,590 0 0 583 0 433,734 5,533 219,415 85,217 18,313 3,161 39,895 5,587 115,042 7,206 278 6,965 72 885 433,734 450 17,022 1,936 3,730 507 2,761 920 25,624 708 40 3,240 18 420 273,733 0 0 0 0 237,106 21,152 15,474 0 80,614 0 0 0 0 57,560 19,361 3,694 0 25,128 4,511 2,583 34,083 4,016 84,340 10,569 183 2,998 59 390
2020 The river Maas 52 0 14 3 14 16 0 0 1 0 4 0 6,046 0 2,756 427 606 1,686 0 0 363 0 207 0 430,317 5,699 224,044 89,885 19,474 2,976 31,454 3,643 108,624 5,360 129 5,885 37 1,121 430,317 443 16,415 2,151 3,244 342 2,580 563 21,335 302 18 2,500 2 438 232,913 0 0 0 0 218,399 14,514 0 0 66,010 0 0 0 0 52,396 13,614 0 0 21,230 3,862 2,550 27,499 3,132 75,411 5,324 94 2,211 29 423
2021 The river Maas 52 0 14 3 14 16 0 0 1 0 4 0 6,085 0 2,784 427 606 1,686 0 0 363 0 218 0 444,740 5,620 220,395 91,968 19,365 2,842 . . . . . . . . 444,740 430 15,910 2,174 3,170 315 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1990 The river Schelde 31 2 4 12 8 2 1 0 0 1 . . . . . . . . . . 70,618 . 41,725 14,281 3,744 652 7,328 1,184 18,973 3,357 49 975 27 276 70,618 . 4,793 576 1,875 283 1,510 401 5,350 876 20 581 8 138 121,371 76,740 0 0 44,631 0 0 0 0 12,646 3,622 0 0 9,024 0 0 0 0 5,074 661 266 5,672 806 12,711 2,327 29 363 21 101
2000 The river Schelde 26 1 2 11 6 3 2 1 0 0 . . . . . . . . . . 94,436 . 37,022 13,480 3,619 602 7,438 1,281 16,891 2,543 55 971 14 519 94,436 . 4,791 490 1,762 138 714 309 4,409 381 25 427 5 253 62,479 0 0 0 4,323 58,006 0 0 150 15,619 0 0 0 1,178 14,436 0 0 5 7,958 573 451 5,900 623 12,888 1,871 22 454 12 218
2010 The river Schelde 21 0 8 7 3 2 1 0 0 0 1,318 0 1,023 215 27 43 10 0 0 0 97,936 1,043 39,882 15,400 3,774 599 6,092 968 18,551 2,756 31 1,318 13 519 97,936 128 4,968 540 894 134 425 206 3,611 462 17 632 4 341 66,842 0 0 0 0 66,842 0 0 0 14,759 0 0 0 0 14,759 0 0 0 6,200 681 444 5,938 600 14,303 2,288 20 356 10 266
2020 The river Schelde 20 0 7 7 2 2 0 1 0 0 1 0 1,302 0 919 202 16 43 0 86 0 0 36 0 89,756 1,136 44,064 17,991 4,009 583 5,044 654 17,250 921 26 904 9 493 89,756 115 4,363 499 814 127 340 93 2,620 34 5 332 1 225 54,946 0 0 0 0 54,946 0 0 0 12,243 0 0 0 0 12,243 0 0 0 4,720 640 439 5,918 750 13,621 1,156 16 332 6 234
2021 The river Schelde 20 0 7 7 2 2 0 1 0 0 1 0 1,302 0 919 202 16 43 0 86 0 0 36 0 94,534 1,074 40,986 16,377 3,902 540 . . . . . . . . 94,534 117 4,377 528 807 141 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Source: CBS.
Explanation of symbols

Dataset is not available.


This table presents the most significant results of the annual survey Public treatment of urban waste water. The results are presented per province and river basin district (Rijn, Maas, Eems and Schelde) and include:
- number and capacity of the urban waste water treatment plants by type of treatment;
- the volume and concentration of organic matter, nutrients and heavy metals in the waste water running into waste water treatment plants (influent) and the volume of treated waste water (effluent). As of 2017, data on heavy metals are only inventoried for even years.
- the volume and destination of the sludge released, with nutrients and heavy metals. As of 2017, sludge data are only inventoried for even years.
Additional data on urban waste water treatment plants, process technology, energy consumption, generation of energy and sludge dewatering can be accessed on the Dutch version of StatLine.

Data available from: 1981

Status of the figures:
The figures in this table are definitive.

Changes as of 22 March 2023:
The figures of 2021 has been added.

When will new figures be published?
New figures on 2022 will be published by March 2024.

Description topics

Urban waste water treatment plants
The number and capacity of urban waste water treatment plants in the Netherlands where nearly all domestic waste water and waste water from the private sector is treated. The plants are all operated by regional water quality control authorities.
Numbers by type
Number of sewage water treatment plants broken down by method of treatment.
Total number
The total number of urban waste water treatment plants in the Netherlands.
Trickling filters
Waste water is sprinkled over a layer of porous stones covered with bacteria (biofilm). Thus, organic compounds in the waste water are degraded.
Aeration tanks
Pre-settled waste water runs through an intensively aerated basin containing active sludge (bacteria). Organic pollutants are degraded by oxygen and active sludge. The treatment process takes up only a short period of time and the sludge load is high which is typical of aeration basins.
Oxidation tanks
Operates by the same principle as the aeration tank but the sludge load is significantly lower. The resulting sludge is highly mineralised and will therefore decompose more slowly.
Oxidation ditches
In oxidation ditches, waste water is directed through a aeration circuit several times. The process takes up 2 or 3 days. Consequently, the sludge load is extremely low.
Carrousels
This technology is chiefly applied in large installations. Typical of carrousels are the depth (between 2 to 4 metres) and the aeration method.
Discontinuous systems
Oxidation basins and oxidation ditches. Waste water is let in batch-controlled.
Parallel installations
Various combinations of treatment systems (so-called 'streets') are applied in one installation.
Multi-stage installations
A serial process consisting of two systems, for instance, a trickling filter and an aeration basin. The waste water runs through both stages.
Compact installations
A system consisting of a basin subdivided into four segments. Waste water flows into the aeration segment. Subsequently, the sludge is separated in the central aeration zone. Then part of the sludge is conditioned in the reaeration zone and led back into the aeration zone. The other part (surplus sludge) is stabilised in the sludge mineralisation zone and subsequently removed.
Nereda granular sludge reactor
In the Nereda granular sludge reactor the wastewater is purified by micro-organism clogged in natural granular structures of high density. These granules have a high biological activity and make it easy to separate the micro-organisms from the treated wastewater.

As from 2019 this new treatment type is distinghuished separately in Statline. In the period 2011-2018 already 4 Nereda systems became operational. Until 2019, these installations were classified as oxidation tanks and/or discontinous systems.
Hybrid Nereda - active sludge system
System consisting of a parallel operated Nereda granular sludge reactor and activated sludge system.

In the Nereda granular sludge reactor the wastewater is purified by micro-organism clogged in natural granular structures of high density. These granules have a high biological activity and make it easy to separate the sludge from the treated wastewater.

In activated sludge systems the wastewater is treated in bassins with flocculated sludge . This sludge clumps exists of microorganisms that feed on the the organic pollution in wastewater.

As from 2019 this new treatment type is distinghuished separately in Statline. In the period 2013-2018 already 2 hybrid Nereda - activated sludge sytems became operational. Until 2019, these installations were classified as parallel installations.
Capacity pollution equivalents by type
Capacity urban waste water treatment plant:
A value that indicates how much organic pollution theoretically can be treated by a waste water treatment plant.

The pollution equivalent is the official unit that quantifies the pollution in waste water; one pollution equivalent = 150 g TOD (Total Oxygen Demand).
One pollution equivalent is the daily quantity of oxygen-demanding material in the waste water of one person. The degree of pollution in the waste water produced by the private sector is also expressed in pollution equivalents.
This unit is used as of 2010, so for previous years no values are available.
Total capacity pollution equivalents
Trickling filters
Waste water is sprinkled over a layer of porous stones covered with bacteria (biofilm). Thus, organic compounds in the waste water are degraded.
Aeration tanks
Pre-settled waste water runs through an intensively aerated basin containing active sludge (bacteria). Organic pollutants are degraded by oxygen and active sludge. The treatment process takes up only a short period of time and the sludge load is high which is typical of aeration basins.
Oxidation tanks
Operates by the same principle as the aeration tank but the sludge load is significantly lower. The resulting sludge is highly mineralised and will therefore decompose more slowly.
Oxidation ditches
In oxidation ditches, waste water is directed through a aeration circuit several times. The process takes up 2 or 3 days. Consequently, the sludge load is extremely low.
Carrousels
This technology is chiefly applied in large installations. Typical of carrousels are the depth (between 2 to 4 metres) and the aeration method.
Discontinuous systems
Oxidation basins and oxidation ditches. Waste water is let in batch-controlled.
Parallel installations
Various combinations of treatment systems (so-called 'streets') are applied in one installation.
Multi-stage installations
A serial process consisting of two systems, for instance, a trickling filter and an aeration basin. The waste water runs through both stages.
Compact installations
A system consisting of a basin subdivided into four segments. Waste water flows into the aeration segment. Subsequently, the sludge is separated in the central aeration zone. Then part of the sludge is conditioned in the reaeration zone and led back into the aeration zone. The other part (surplus sludge) is stabilised in the sludge mineralisation zone and subsequently removed.
Nereda granular sludge reactor
In the Nereda granular sludge reactor the wastewater is purified by micro-organism clogged in natural granular structures of high density. These granules have a high biological activity and make it easy to separate the micro-organisms from the treated wastewater.

As from 2019 this new treatment type is distinghuished separately in Statline. In the period 2011-2018 already 4 Nereda systems became operational. Until 2019, these installations were classified as oxidation tanks and/or discontinous systems.
Hybrid Nereda - active sludge system
System consisting of a parallel operated Nereda granular sludge reactor and activated sludge system.

In the Nereda granular sludge reactor the wastewater is purified by micro-organism clogged in natural granular structures of high density. These granules have a high biological activity and make it easy to separate the sludge from the treated wastewater.

In activated sludge systems the wastewater is treated in bassins with flocculated sludge . This sludge clumps exists of microorganisms that feed on the the organic pollution in wastewater.

As from 2019 this new treatment type is distinghuished separately in Statline. In the period 2013-2018 already 2 hybrid Nereda - activated sludge sytems became operational. Until 2019, these installations were classified as parallel installations.
Influent waste water
Data on concentrations and quantities of pollutants in the waste water running into urban waste water treatment plants (influent).
Quantities
Volume waste water
The annual volume of influent waste water.
Pollution Equivalents
The pollution equivalent is the official unit that quantifies the pollution in waste water; one pollution equivalent = 150 g TOD (Total Oxygen Demand).
One pollution equivalent is the daily quantity of oxygen-demanding material in the waste water of one person. The degree of pollution in the waste water produced by the private sector is also expressed in pollution equivalents.
This unit is used as of 2010, so for previous years no values are available.
Chemical oxygen demand (COD)
Chemical oxygen demand (COD). Measure of the amount of oxygen consumed when a substance is degraded chemically.
Biochemical oxygen demand (BOD)
Biological oxygen demand (BOD). Measure of the amount of oxygen consumed when a substance is biodegraded.
Nitrogen compounds as N (total)
The total amount of nitrogen in organic compounds (e.g. proteins) and inorganic compounds (e.g. nitrate and ammonium)
Phosphorus compounds as P (total)
The total amount of phosphates and other phosphorus compounds in waste water, measured as phosphorus (P).
Copper
Chromium
Zinc
Lead
Cadmium
Nickel
Mercury
Arsenic
Discharge of waste water (effluent)
Data on concentrations and quantities of pollutants in treated waste water (effluent) discharged from urban waste water treatment plants.
Quantities
Volume waste water
The annual volume of effluent waste water.
Pollution Equivalents
The pollution equivalent is the official unit that quantifies the pollution in waste water; one pollution equivalent = 150 g TOD (Total Oxygen Demand).
One pollution equivalent is the daily quantity of oxygen-demanding material in the waste water of one person. The degree of pollution in the waste water produced by the private sector is also expressed in pollution equivalents.
This unit is used as of 2010, so for previous years no values are available.
Chemical oxygen demand (COD)
Chemical oxygen demand (COD). Measure of the amount of oxygen consumed when a substance is degraded chemically.
Biochemical oxygen demand (BOD)
Biological oxygen demand (BOD). Measure of the amount of oxygen consumed when a substance is biodegraded.
Nitrogen compounds as N (total)
The total amount of nitrogen in organic compounds (e.g. proteins) and inorganic compounds (e.g. nitrate and ammonium).
Phosphorus compounds as P (total)
The total amount of phosphates and other phosphorus compounds in waste water, measured as phosphorus (P).
Copper
Chromium
Zinc
Lead
Cadmium
Nickel
Mercury
Arsenic
Sewage sludge
Residue of treated waste water consisting of suspended solids and excess active sludge (biomass). Sewage sludge is measured including water (see Total wet sludge) or as dry solids.
Wet sewage sludge by destination
The volume of wet sewage sludge, i.e. including water by destination (processing method).
Total wet sludge
Total wet sludge discharged.
Agriculture
Application of manure or soil improver in agriculture. Due to rigid legislation impossible since 1995.
Wet oxidation
Wet oxidation of sludge in so-called VerTech installations: the sludge is oxidised under high pressure in a deep shaft.
Composting
Landfill
Dumping of sludge on regional landfill sites or special sludge depots.
Incineration
Incineration of sludge in special sludge incineration plants or in household waste incinerators.
Cement industry
Co-incineration in cement ovens.
Co-incineration at power plants
Sewage sludge used as a secondary fuel at a power plant.
Other destinations
Mainly reuse.
Dry solids by destination
Discharged sewage sludge in kilogrammes of dry solids by destination (processing method). Dry solid is the residue of sewage sludge after evaporation at 105 degrees centigrade.
Total dry solids
Agriculture
Application of manure or soil improver in agriculture. Due to rigid legislation impossible since 1995.
Wet oxidation
Wet oxidation of sludge in so-called VerTech installations: the sludge is oxidised under high pressure in a deep shaft.
Composting
Landfill
Dumping of sludge on regional landfill sites or special sludge depots.
Incineration
Incineration of sludge in special sludge incineration plants or in household waste incinerators.
Cement industry
Co-incineration in cement ovens.
Co-incineration at power plants
Sewage sludge used as a secondary fuel at a power plant.
Other destinations
Mainly reuse.
Nutrients and heavy metals
The total weight of nutrients and heavy metals removed with the sludge. Most heavy metals adsorb strongly to the sludge particles.
Ashes
The residue of non-inflammable, inorganic matter after incineration.
Nitrogen compounds as N
The total amount of nitrogen in organic compounds (e.g. proteins) and inorganic compounds (e.g. nitrate and ammonium).
Phosphorus compounds as P
The total amount of phosphorus in sewage sludge is analysed as P205 (diphosphorus pentoxide) converted to P total.
Copper
Chromium
Zinc
Lead
Cadmium
Nickel
Mercury
Arsenic