JP4475896B2 - 合流式下水方法 - Google Patents
合流式下水方法 Download PDFInfo
- Publication number
- JP4475896B2 JP4475896B2 JP2003292915A JP2003292915A JP4475896B2 JP 4475896 B2 JP4475896 B2 JP 4475896B2 JP 2003292915 A JP2003292915 A JP 2003292915A JP 2003292915 A JP2003292915 A JP 2003292915A JP 4475896 B2 JP4475896 B2 JP 4475896B2
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- JP
- Japan
- Prior art keywords
- bod
- speed
- water
- speed filtration
- sewage treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000010865 sewage Substances 0.000 title claims description 48
- 238000000034 method Methods 0.000 title claims description 16
- 238000001914 filtration Methods 0.000 claims description 83
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 71
- 238000004062 sedimentation Methods 0.000 claims description 13
- 230000007774 longterm Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 description 5
- 238000011001 backwashing Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000012447 hatching Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Activated Sludge Processes (AREA)
Description
2 最初沈殿池
3 生物反応槽
4 最終沈殿池
5 高速ろ過装置
6 雨水貯留池
7 ろ過槽
8 洗浄排水槽
9 浮上ろ材
10 ろ材流出防止スクリーン
11 流入水路
12 共通処理水槽
13 逆洗弁
14 パイプ
15 ポンプ
Claims (3)
- 最初沈殿池、生物反応槽、最終沈殿池とからなる二次処理系列のほかに高速ろ過装置と雨水貯留池とを備えた合流式下水処理場における高速ろ過装置の規模を、実際の降雨時における流入水量から所定時間ごとに流入水の配分先を求めたうえ、その配分先毎に設定したBOD除去率と原水BOD濃度からBOD流出量を計算して1降雨全体のBOD流出負荷量を求め、その長期間の合計値を取るステップを、雨水貯留池の規模と高速ろ過装置の規模とを変化させながら繰り返すことにより決定し、
決定された規模の高速ろ過装置を持つ合流式下水処理場において、
降雨時に流入水量が二次処理系列の設計水量を越えたときには、流入水をまず雨水貯留池に貯留し、雨水貯留池が満杯になったときには高速ろ過装置へ送水して高速ろ過を行って放水し、さらに流入水量が高速ろ過装置の処理能力を越えたときには超過分を直接放流する処理を行うことを特徴とする合流式下水処理方法。 - 高速ろ過装置を、浮上ろ材が充填された高速ろ過槽とする請求項1記載の合流式下水処理方法。
- 高速ろ過槽のBOD除去率を、ろ過速度と原水BOD濃度との関数として設定する請求項2記載の合流式下水処理方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003292915A JP4475896B2 (ja) | 2003-08-13 | 2003-08-13 | 合流式下水方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003292915A JP4475896B2 (ja) | 2003-08-13 | 2003-08-13 | 合流式下水方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005058920A JP2005058920A (ja) | 2005-03-10 |
JP4475896B2 true JP4475896B2 (ja) | 2010-06-09 |
Family
ID=34370080
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2003292915A Expired - Lifetime JP4475896B2 (ja) | 2003-08-13 | 2003-08-13 | 合流式下水方法 |
Country Status (1)
Country | Link |
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JP (1) | JP4475896B2 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5722700B2 (ja) * | 2011-05-16 | 2015-05-27 | メタウォーター株式会社 | 排水処理システム |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4485043B2 (ja) * | 2000-10-31 | 2010-06-16 | メタウォーター株式会社 | 下水処理システム、その流入水処理演算装置、流入水処理方法、及び記憶媒体 |
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2003
- 2003-08-13 JP JP2003292915A patent/JP4475896B2/ja not_active Expired - Lifetime
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JP2005058920A (ja) | 2005-03-10 |
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