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Upward flow type composite anaerobic hydrolysis and acidification treater, and method

A composite anaerobic and hydrolytic acidification technology, applied in the field of sewage hydrolysis and acidification treatment devices, can solve the problems of small floor space, low hydrolysis acidification efficiency, large floor space, etc., and achieve high load impact resistance and high hydrolysis acidification efficiency. , The effect of stable water quality

Active Publication Date: 2007-07-25
CHONGQING KANGDA ENVIRONMENTAL PROTECTION IND GRP
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned existing hydrolytic acidification device with large footprint, complex structure, low hydrolysis acidification efficiency and easy blockage, and to provide an upflow composite anaerobic device combining activated sludge method and biofilm method. The hydrolytic acidification device has a simple structure, is not easy to be blocked, occupies a small area, and has high hydrolytic acidification efficiency

Method used

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  • Upward flow type composite anaerobic hydrolysis and acidification treater, and method

Examples

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Embodiment 1

[0022] Implementation example 1: Taking the actual domestic sewage discharged from a family area of ​​a university in Beijing as the object, adding appropriate amount of beer to achieve different COD concentrations, when the influent flow rate is 6L / h, the influent COD=800~1000mg / L, BOD 5 =328-410 mg / L, SS=63-137 mg / L. The total hydraulic retention time of the hydrolytic acidification unit is 4.5h, the reflux ratio of the suspended sludge area is 200% of the influent flow rate, and the experiment is carried out at room temperature (23-25°C). The running results show that: the experimental raw water BOD 5 / COD is 0.41, the BOD of hydrolytic acidification effluent 5 / COD increased to 0.76, and the biodegradability of sewage was greatly improved. After hydrolysis and acidification, the average removal rate of COD exceeds 50%, the average removal rate of suspended matter concentration exceeds 70%, and the concentration of suspended matter in the effluent is less than 30mg / L. This...

Embodiment 2

[0023] Implementation example 2: Taking the actual domestic sewage discharged from a family area of ​​a university as the object, adding appropriate amount of starch to achieve different COD and SS concentrations, when the influent flow rate is 6L / h, the influent COD=1000~1500mg / L, BOD 5 =320~480mg / L, SS=114~213mg / L. The total hydraulic retention time of the hydrolytic acidification unit is 4.5h, the reflux ratio of the suspended sludge area is 300% of the influent flow rate, and the experiment is carried out at room temperature (23-25°C). The running results show that: the experimental raw water BOD 5 / COD is 0.32, the BOD of hydrolysis acidification effluent 5 / COD increased to 0.63, and the biodegradability of sewage was greatly improved. After hydrolysis and acidification, the average removal rate of COD exceeds 50%, the concentration of COD in the effluent is less than 800mg / L, the average removal rate of suspended solids exceeds 80%, the concentration of suspended sol...

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Abstract

This invention discloses apparatus and method for up-flow composite anaerobic hydrolysis and acidification of wastewater. The method solves the problems of low acidification efficiency, eay blockage, and complex structure faced by the present techniques. The apparatus comprises a water inlet pipe at the bottom, and a water storage tank at the top. The water storage tank is connected with the water output pipe. The apparatus also comprises, from bottom to top, a suspended sludge zone, a sludge-water separation zone, and a biomembrane enhancement zone. A circulation pump is connected with the suspended sludge zone and the water inlet pipe, respectively, to form a circulation loop. A sludge discharge mouth is set in the suspended sludge zone. The sludge-water separation zone and the suspended sludge zone are connected via a diameter-changeable joint. The biomembrane enhancement zone is filled with biological carrier. This invention has such advantages as simple apparatus and method, and high hydrolysis and acidification efficiency, and is suitable for treatment of domestic wastewater and industrial wastewater with high biochemical capacity.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and relates to a sewage hydrolysis acidification treatment device and a method thereof. Background technique [0002] The traditional sewage treatment process generally uses the primary sedimentation tank as a pretreatment process to remove suspended solids and particulate matter in the sewage, improve the biodegradability of the sewage and reduce the organic load of the subsequent treatment process, but the primary sedimentation tank mainly relies on physical The pretreatment of sewage cannot improve the biodegradability of sewage, and the effluent still contains a large amount of refractory substances, which occupies a large area. Since the 1980s, some sewage treatment processes in my country have begun to use hydrolytic acidification as a pretreatment process. [0003] The hydrolytic acidification treatment process takes into account the different growth rates of methanogenic bacteri...

Claims

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Application Information

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IPC IPC(8): C02F3/28
Inventor 彭永臻王建龙王淑莹
Owner CHONGQING KANGDA ENVIRONMENTAL PROTECTION IND GRP