发明申请
US20080110825A1 Method and apparatus for treating sludge, and method and apparatus for treating wastewater utilizing the same
失效
用于处理污泥的方法和装置,以及利用其处理废水的方法和装置
- 专利标题: Method and apparatus for treating sludge, and method and apparatus for treating wastewater utilizing the same
- 专利标题(中): 用于处理污泥的方法和装置,以及利用其处理废水的方法和装置
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申请号: US11900745申请日: 2007-09-13
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公开(公告)号: US20080110825A1公开(公告)日: 2008-05-15
- 发明人: Toyoshi Yamaguchi , Kunio Miyazawa , Yasuki Yao , Toshiaki Tsubone , Jun Miyata , Yoshinori Yomura
- 申请人: Toyoshi Yamaguchi , Kunio Miyazawa , Yasuki Yao , Toshiaki Tsubone , Jun Miyata , Yoshinori Yomura
- 申请人地址: JP Tokyo
- 专利权人: JFE Engineering Corporation
- 当前专利权人: JFE Engineering Corporation
- 当前专利权人地址: JP Tokyo
- 优先权: JP2002-195085 20020703; JP2002-312939 20021028
- 主分类号: C02F3/30
- IPC分类号: C02F3/30 ; C02F9/14 ; C02F9/00
摘要:
A method and an apparatus for treating organic wastewater and sludge which remarkably reduce the generated amount of sludge at a much lower running cost, and which reduce the size and the capacity of the solubilization tank. The method and apparatus for treating sludge employs a biological treatment system, wherein a biological treatment of wastewater is carried out, and a solid-liquid separation unit for separating a solid from a liquid in the wastewater after the biological treatment, to obtain a treated wastewater and a sludge. The apparatus has a means for obtaining a withdrawn sludge from a part of the sludge and an alkali-treatment tank, wherein an alkali-treatment of the withdrawn sludge is carried out. The apparatus also has a biological solubilization tank which solubilizes the sludge after the alkali-treatment under an anaerobic, anoxic or microaerophilic condition, and a means for recycling the solubilized sludge to the biological treatment system.
公开/授权文献
- US07560027B2 Method for treating wastewater and sludge 公开/授权日:2009-07-14