Intermediate water reusing technology with combined reactor system for treating domestic sewage
A technology of expanded granular sludge and membrane bioreactor, which is applied in the direction of aerobic and anaerobic process treatment, and can solve the problems of sludge treatment technology and cost of sewage treatment plants, etc.
Inactive Publication Date: 2004-09-08
JIANGNAN UNIV
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Problems solved by technology
[0007] The current various activated sludge methods inevitably discharge excess sludge, and the treatment technology and cost of a large amount of sludge have always been a problem for sewage treatment plants
Method used
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Embodiment 1
[0067] Operate according to the main equipment and technological process described in the manual, use the EGSB-MBR combined system to treat domestic sewage, and the COD concentration of the influent is 300-400mgL -1 , control the COD concentration of EGSB effluent to 150-200mgL -1 , MBR effluent COD concentration is about 10mgL -1 . The whole system is fed with NH 3 -N concentration is about 30mgL -1 , effluent NH 3 -N concentration is stable below 5mgL -1 , SS is 0mgL -1 , the turbidity of the effluent is close to 0NUT, and the chromaticity of the effluent is stable below 20 times.
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The present invention provides intermediate water reusing technology with combined reactor system, and relates to domestic sewage treating and sludge reducing technology. The present invention features that expanding granular sludge bed anaerobic reactor and aerobic membrane bioreactor are combined to constitute one processing system for low concentration domestic sewage. The expanding granular sludge bed anaerobic reactor degrades the organic matter in domestic sewage effectively with short staying time and high volume load; and the membrane bioreactor eliminates the residual organic matter and ammonia nitrogen completely to make the effluent reach reused intermediate water standard. The combined processing system has small volume, low sludge yield and relatively high effluent quality.
Description
technical field [0001] The invention discloses a reclaimed water reuse technology for domestic sewage treatment by an expanded granular sludge bed anaerobic reactor-aerobic membrane bioreactor combined system, which relates to domestic sewage treatment and sludge reduction technology. Background technique [0002] With the rapid expansion of urban population, the total amount of urban domestic sewage is increasing rapidly, and domestic sewage has become an important source of pollution. For cities that lack water resources, urban wastewater is also a valuable asset. Many countries in the world are actively using urban sewage and developing reclaimed water reuse systems suitable for their national conditions. Urban sewage reuse and reclaimed water system can be used as a supplementary water source for urban tap water, which is widely supplied to factories, enterprises and residential quarters for flushing toilets and miscellaneous uses. The purpose of developing and utilizing...
Claims
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Inventor 陈坚堵国成杨云军伦世仪
Owner JIANGNAN UNIV