Sewage deep treatment device based on fixed phycomycete system

Abstract

The invention belongs to the field of sewage deep treatment and particularly relates to a sewage deep treatment device based on a fixed phycomycete system. The device comprises a water inlet, a water inlet tank, through holes, a biological reaction area, elastic three-dimensional filler, a rotating cage, a transmission device, illumination devices, an overflow weir, a water outlet tank, a water outlet, a sludge discharge opening and an aeration device. The water inlet tank is located on the periphery of the whole device, a sewage inlet is formed in one side of the water inlet tank, and the six through holes are evenly formed in the bottom of the water inlet tank; the through holes in the bottom of the water inlet tank are communicated with the biological reaction area; the biological reaction area comprises the elastic three-dimensional filler and the rotating cage; the rotating cage is connected with the transmission device; the illumination devices are symmetrically arranged on the two sides of the biological reaction area; the water outlet tank is located on the outer sides of the illumination devices, and a sewage outlet is formed in the bottom of the water outlet tank; the aeration device is located at the bottom of the whole device; the sludge discharge opening is formed in the bottom of the sewage deep treatment device. The sewage deep treatment device is high in denitrification and dephosphorization efficiency, low in operation cost and capable of effectively reducing secondary pollution.

Description

technical field [0001] The invention belongs to the field of advanced sewage treatment, and in particular relates to a biological reaction device suitable for advanced sewage treatment. technical background [0002] A large amount of nitrogen and phosphorus-containing industrial and agricultural wastewater and domestic sewage are discharged into water bodies, leading to the eutrophication of lakes and rivers in my country, which seriously threatens the balance of aquatic ecology and the safety of drinking water. [0003] At present, urban sewage plants in my country are generally faced with the problem that the nitrogen and phosphorus content in the effluent after the existing conventional secondary treatment is still high, and the discharge cannot be discharged stably (Grade 1 A discharge standard for pollutants in urban sewage treatment plants GB18918-2002). In order to improve the efficiency of nitrogen and phosphorus removal, urban sewage plants mainly adopt the technolo...

AI Technical Summary

Problems solved by technology

At present, the immobilization forms adopted by the advanced treatment device for immobilized algae and bacteria are mainly divided into internal fixation and external fixation. The internal fixation generally adopts the embedding method, and there are two types: one is the natural polymer gel carrier, such as Agar, sodium alginate, etc.; the other is organic synthetic polymer gel carrier, such as polyacrylamide gel, polyvinyl alcohol gel, etc. Some organic embedding materials are toxic and will produce secondary Pollution

The embedding method generally has the problem of low immobilization strength, and the carrier is easy to dissolve, which affects the treatment effect

At the same time, the embedding method is more complicated to operate, and the processing cost is high; the external fixation mainly adopts the film-hanging method, which is simple to operate, low in cost, and easy to be applied in engineering. The commonly used methods are inoculation film-hanging method and natural film-hanging method

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