Composite anaerobic reactor with inner circulation
Title：
Composite anaerobic reactor with inner circulation
Application Number：
 200610112763
Application Date：
 2006/09/01
Announcement Date：
 2007/02/21
Pub. Date：
Publication Number：
 1915862
Announcement Number：
Grant Date：
Granted Pub. Date：
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 C02F 3/28
Applicant(s)：
 Tsinghua Univ.
Inventor(s)：
 Wu Jing
Key Words：
 Composite, inner circulation, anaerobic reactor
Abstract：
 This invention relates to an improved internal circulating anaerobic bioreactor. When the present internal circulating anaerobic bioreactors are used to treat low-concentration organic wastewater, the SS content in the outlet water is high, the internal circulating liquid ans the inlet water is not adequately mixed, and the utility of the second reaction zone is low. The improved internal circulating anaerobic bioreactor in this invention retains the upcast pipe, the downcast pipe and the gas-liquid separation zone, while uses a filtration zone to replace the precipitation zone, changes the single downcast pipe into 2-4 pipes with the equal space, and cancles the second reaction zone. The improved internal circulating anaerobic bioreactor has such advantages as simplified structure, high volume utility, low SS content in the outlet water, no sludge loss and high reaction efficiency. The volume load of the improved internal circulating anaerobic bioreactor is four times that of UASB reactor, with 20 kg COD/(m3 .d) when treating medium-concentration organic wastewater (such as beer wastewater), and 8 kg COD/(m3 .d) when treating low-concentration organic wastewater. Besides, the improved internal circulating anaerobic bioreactor also has such advantages as small space area, stable running and easy operation.
Claim：
Priority：
PCT：
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