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Sewage treatment bioreactor

A technology for bioreactor and sewage treatment, applied in biological water/sewage treatment, water/sludge/sewage treatment, sustainable biological treatment, etc. Concentration reduction, treatment system can not work normally, etc., to save energy, reduce solid load, reduce the effect of hydraulic load

Inactive Publication Date: 2005-05-25
山东东环环境科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this can temporarily increase the concentration of activated sludge in the bioreactor, due to the increase in the return sludge flow rate, the flow rate of the mixed liquid flowing from the bioreactor into the sedimentation tank increases, which increases the hydraulic load of the sedimentation tank.
At the same time, due to the increase of the flow rate of the mixed liquid and the increase of the sludge concentration, the total amount of sludge entering the sedimentation tank increases, which can increase the concentration of suspended solids in the effluent of the sedimentation tank, and at the same time increase the solid concentration of the return sludge. Reduced, in severe cases, it will cause the entire processing system to fail to work normally
Therefore, only relying on increasing the activated sludge reflux flow rate cannot guarantee a higher activated sludge concentration in the bioreactor

Method used

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Embodiment Construction

[0023] The embodiments of the present invention will be further described below in conjunction with the above-mentioned drawings.

[0024] Figure 1, the bioreactor of the present invention contains a deflector 6 and a deflector 9, which divide the reactor into a mixing zone 3, a static zone 7, and a mixed liquid circulation channel 8. The mixing zone 3 is located between the deflector 9 and the reactor water distribution system 2, the static zone 7 is located between the deflector 6 and the reactor water collection system 4, and the circulation channel 8 for the mixed liquid circulation is located between the deflector 6 and the flow guide between plates 9. An aeration mixing device 10 is provided in the mixing zone 3 . The sewage and the returned activated sludge from the sedimentation tank first enter the mixing zone 3 of the bioreactor through the water inlet 1 and the water distribution system 2 . The sewage and activated sludge are fully mixed and reacted under the st...

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Abstract

The present invention relates to biological treating technology for sewage and the sewage treating bioreactor is suitable for treating organic waste water in both aerobic and anaerobic conditions. The bioreactor of the present invention consists of guide plate, mixing area and static area and circulating channel formed by the separating guide plate. Active sludge is first deposited and concentrated in the static area and then carried by the mixed liquid circulating constantly in the circulating channel to the mixing area. So, the bioreactor has relatively high sludge maintained to improve sewage treating performance while lowering the sludge flow rate from the deposit pond, the hydraulic load and solid load of the deposit pond and improving the effluent quality of the deposit pond. The present invention has relatively high sewage treating capacity.

Description

technical field [0001] A sewage treatment bioreactor relates to sewage biological treatment technology and is suitable for treating organic waste water under aerobic, anoxic, or anaerobic conditions. Background technique [0002] Sewage containing biodegradable organic matter is often treated biologically. The suspension growth process, or activated sludge process, is one of the most commonly used biological treatment processes. The secondary treatment of most urban sewage treatment plants uses a suspension growth process to remove dissolved organic pollutants. The suspension growth process contains a suspension growth method bioreactor (also called an aeration tank under aerobic conditions) and a sedimentation tank (usually called a secondary sedimentation tank, or a secondary sedimentation tank). During the sewage treatment process, the sewage and the activated sludge returned from the sedimentation tank enter the aeration tank, and the aerat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F3/12
CPCY02W10/10
Inventor 王建民
Owner 山东东环环境科技股份有限公司
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