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Sewage Works in Osaka, Japan
Present Status
(2) The Twelve Sewage Treatment Plants
The city area is divided into 12 public and 3 regional sewerage areas. (as of March 31, 2007)
Ono Sewage Treatment Plant
| Site area |
238,377m2 Including 140,942m2 of the land
for the new pumping station in Torishima area |
| Planning sewer service area |
18.59km2 |
| Treatment capacity |
280,000m3/day |
| Main facilities |
280,000m3/day |
| Date of operation commencement |
2-story primary and final settling tanks, gravity thickeners, digestion tanks November 1967 |
| Receiving Water Body (River) |
Kanzaki River |
Nakahama Sewage Treatment Plant
| Site area |
84,157m2 |
| Planning sewer service area |
18.69km2 |
| Treatment capacity |
288,000m3/day |
| Main facilities |
2 lines of sewage treatment process, 2-story primary and final settling tanks, gravity thickeners, mechanical thickeners, digestion tanks, wastewater reclamation plant for reuse |
| Date of operation commencement |
East plant:May 1960 West plant:August 1963 |
| Receiving Water Body (River) |
Daini-neya River |
Juhachijo Sewage Treatment Plant
| Site area |
34,640m2 |
| Planning sewer service area |
12.54km2 |
| Treatment capacity |
182,000m3/day [excluding 21,000m3/day for Suita City] |
| Main facilities |
2 lines of sewage treatment process, 2-story primary and final settling tanks, wastewater reclamation plant for reuse |
| Date of operation commencement |
March 1970 |
| Receiving Water Body (River) |
Kanzaki River |
Hanaten Sewage Treatment Plant
| Site area |
59,391m2 |
| Planning sewer service area |
5.40km2 |
| Treatment capacity |
106,000m3/day [excluding 48,000m3/day for Higashi-Osaka City] |
| Main facilities |
4 lines of sewage treatment process, 2-story primary and final settling tanks, gravity thickeners, digestion tanks, incinerators, wastewater reclamation plant for reuse |
| Date of operation commencement |
October 1967 |
| Receiving Water Body (River) |
Hirano Diversion Channel |
Imafuku Sewage Treatment Plant
| Site area |
51,631m2 |
| Planning sewer service area |
16.16km2 |
| Treatment capacity |
320,000m3/day |
| Main facilities |
2-story primary settling tanks, Combination type reaction tanks (upper) and final settling tanks (lower) |
| Date of operation commencement |
June 1966 |
| Receiving Water Body (River) |
Neya River |
Hirano Sewage Treatment Plant
| Site area |
95,552m2 |
| Planning sewer service area |
24.80km2 |
| Treatment capacity |
270,000m3/day [excluding 53,000m3/day for Higashi-Osaka City and Yao City] |
| Main facilities |
2 lines of sewage treatment process, Deep reaction tanks, 3-story final settling tanks, gravity thickeners, an incinerator, a melting furnace, combination type Rapid Sand Filtration facility (upper) and Stormwater Reservoir (lower)
|
| Date of operation commencement |
April 1972 |
| Receiving Water Body (River) |
Hirano Diversion Channel |
Suminoe Sewage Treatment Plant
| Site area |
86,845m2 |
| Planning sewer service area |
31.45km2 |
| Treatment capacity |
220,000m3/day |
| Main facilities |
3 lines of sewage treatmtment process, 2-story primary and final settling tanks, gravity thickeners, mechanical thickeners, digestion tanks
|
| Date of operation commencement |
December 1964 |
| Receiving Water Body (River) |
Sumiyoshi River |
Konohana Sewage Treatment Plant
| Site area |
34,513m2 |
| Planning sewer service area |
10.81km2 |
| Treatment capacity |
168,000m3/day |
| Main facilities |
2-story primary settling tanks, deep reaction tanks, 3-story final settling tanks, rapid sand filtration tank |
| Date of operation commencement |
July 1968 |
| Receiving Water Body (River) |
Shorenji River |
Chishima Sewage Treatment Plant
| Site area |
36,595m2 |
| Planning sewer service area |
6.00km2 |
| Treatment capacity |
79,000m3/day |
| Main facilities |
2-story final settling tanks, wastewater reclamation plant for reuse |
| Date of operation commencement |
October 1963 |
| Receiving Water Body (River) |
Kizu River |
Ebie Sewage Treatment Plant
| Site area |
111,046m2 |
| Planning sewer service area |
12.15km2 |
| Treatment capacity |
326,000m3/day |
| Main facilities |
2 lines of sewage treatment process, Combination type reaction tanks (upper) and final settling tanks (lower), gravity thickeners, mechanical thickeners, digestion tanks, wastewater reclamation plant for reuse |
| Date of operation commencement |
April 1940 |
| Receiving Water Body (River) |
Shorenji River (treated water) Shin-Yodo River (stormwater) |
Ichioka Sewage Treatment Plant
| Site area |
44,912m2 |
| Planning sewer service area |
8.12km2 |
| Treatment capacity |
120,000m3/day |
| Main facilities |
2-story primary and final settling tanks, Stormwater Reservoir |
| Date of operation commencement |
April 1961 |
| Receiving Water Body (River) |
Shirinashi River |
Tsumori Sewage Treatment Plant
| Site area |
123,015m2 |
| Planning sewer service area |
19.62km2 |
| Treatment capacity |
363,000m3/day |
| Main facilities |
2 lines of 2-story primary settling tanks, 3 lines of reaction tanks and final settling tanks, gravity thickeners, centrifugal thickeners, digestion tanks |
| Date of operation commencement |
April 1940 |
| Receiving Water Body (River) |
Kizu River |
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