A treatment device and method for deep denitrification of secondary effluent
A technology of treatment device and secondary effluent, applied in water/sewage multi-stage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc. Effect of contact mixing, reducing disposal cost
Active Publication Date: 2019-03-29
HOHAI UNIV
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Problems solved by technology
The organic matter only undergoes primary decomposition during the hydrolytic acidification process, and the removal rate of COD is not high. The subsequent anaerobic methane fermentation or aerobic treatment is necessary to completely decompose the organic matter and stabilize the mineralization
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[0035] The present invention provides a treatment apparatus for secondary excess water depth denitrification, which is schematically figure 1According to a first mixer, a hydrolyzed acidified reactor, a second mixer, and a diaphragm reactor sequentially coupled, wherein: the first mixer is a partial board corner mixer, which is provided with a raw water inlet, Hydrolysis acidified out-fluid inlet and first mixed liquid outlet, raw water inlet, hydrolyzate acidified drain, the first mixing liquid exit is connected to the corresponding lift pump; the top of the hydrolyzed acidified reactor is provided with an outer back and outlet The bottom is provided with a bottom inlet, and the outer return hole is connected to the first mixer. The water shifter is connected to the second mixer, the bottom inlet is connected to the lifting pump connected to the first mixture of the first mixer, and the bottom is imported. Using a uniform cloth; hydrolyzed acidified reactor is a gravity multi-slu...
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The invention discloses a treatment device for deep denitrification of secondary effluent, which comprises a first mixer, a hydrolysis acidification reactor, a second mixer and a denitrification filter reactor connected in sequence, wherein the top of the hydrolysis acidification reactor It is equipped with an external return hole and an outlet weir, and the bottom is provided with a bottom inlet. The outer return hole is connected to the first mixer, and the outlet weir is connected to the second mixer. The denitrification filter reactor adopts a long handle of a small resistance water distribution system The filter head and the water outlet adopt a circular weir water outlet. The present invention also proposes a treatment method for deep denitrification of secondary effluent, which uses volatile fatty acids (VFAs) or easily degradable organic matter (rbCOD) produced by hydrolysis and acidification of sewage plant influent as a carbon source for denitrification. The invention adopts the coupling process of high-efficiency hydrolysis of low-quality carbon source and high-efficiency biological denitrification to strengthen the denitrification effect of sewage, reduce or even cancel the dosage of external carbon source, and is not only suitable for the construction of new sewage plants, but also suitable for existing sewage plants The bidding transformation.
Description
Technical field [0001] The present invention relates to a sewage treatment method, in particular to a hydrolysis fermentation of urban sewage plant in water to produce volatile fatty acid (VFAS) or easy to reduce the organism (RBCOD), supplementing the anti-nitrification filter process treatment And improve its carbon source structure to increase the demodulatory effect of sewage plant, reduce the device and method of elimination of external carbon source investment, is a low quality carbon source high-efficiency hydrolysis and high-efficiency biological denitrification coupling process, belonging to the field of sewage treatment. Background technique [0002] In recent years, my country's water environment has become increasingly prominent, and the construction of sewage treatment system is in the period of rapid development. In 2015, the General Office of the Ministry of Environmental Protection has decided to revise national environmental protection standards "pollutant emissi...
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IPC IPC(8): C02F9/14C02F3/28
CPCC02F3/286
Inventor 操家顺商凯航王成虞筠霄费罗兰喻纬华郑尔雅
Owner HOHAI UNIV