发明名称 |
Process for biological treatment of organic waste water and apparatus therefor |
摘要 |
<p>A multistage activated sludge process involving a predation effect caused by microorganisms realizes further improvement in treatment efficiency and further decrease in the amount of excess sludge generated while a stable quality of the treated water is maintained. This process includes a first biological treatment process for treating BOD in organic wastewater at a high load to convert the BOD to dispersed bacteria, and a second biological treatment process for forming the converted dispersed bacteria into a floc and allowing microorganisms to coexist. The second biological treatment process is performed under a condition of pH 5 to 6. The liquid in the first biological tank is varied such that the hydraulic retention time (HRT) in said tank is controlled.</p> |
申请公布号 |
EP2447223(A2) |
申请公布日期 |
2012.05.02 |
申请号 |
EP20120152096 |
申请日期 |
2005.01.25 |
申请人 |
KURITA WATER INDUSTRIES LTD. |
发明人 |
FUJISHIMA, SHIGEKI;YODA, MOTOYUKI |
分类号 |
C02F3/12;C02F1/44;C02F3/00;C02F3/08;C02F3/32;C02F3/34;C02F11/02 |
主分类号 |
C02F3/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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