HEST series efficient energy-saving domestic sewage treatment device

Abstract

The invention designs a novel HEST series efficient energy-saving domestic sewage treatment device, and belongs to the field of resources and environment. The problems that a traditional domestic sewage treatment process device is high in energy consumption and manufacturing cost, short in service life, high in pertinence and the like are solved. According to the novel HEST efficient energy-saving domestic sewage treatment device, a backflow pump, an MBR membrane and the like are omitted, a novel multi-stage biochemical (A2O3) domestic sewage treatment process with a micro-power and ultra-low energy consumption aeration, backflow and precipitation integrated device as a core is adopted, a novel self-rotating biological ball filler is adopted, the purposes of removing ammonia nitrogen, phosphorus, suspended solids and the like are achieved, the energy-saving purpose is achieved, and the main indexes (COD / BOD / ammonia nitrogen / suspended solids and the like) of the effluent reach the first-level A emission standard of the national Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant.

Description

technical field [0001] The invention designs a novel HEST series high-efficiency and energy-saving domestic sewage treatment device, which belongs to the field of resources and environment. Background technique [0002] The main technical route of existing domestic sewage treatment equipment is divided into: AO method, A 2 O method, AO 2 Method + MBR method, etc., there are still many deficiencies and shortcomings in the traditional process methods and process components in the sewage treatment process. This invention is based on the deficiencies of the process methods and components in traditional domestic sewage treatment equipment. , firstly, the advantages and disadvantages of the process and components of traditional domestic sewage treatment equipment are described and explained in detail. [0003] The advantage of the A / O method is that in addition to degrading organic pollutants, it also has a certain function of denitrification and phosphorus removal. It uses anae...

AI Technical Summary

Problems solved by technology

[0008] (4) High volume load

[0011] (1) Since there is no independent sludge return system, sludge with unique functions cannot be cultivated, and the degradation rate of refractory substances is low;

[0012] (2) To improve the denitrification efficiency, the internal circulation ratio must be increased, thus increasing the operating cost

[0020] (1) The phosphorus content in sludge is high, generally above 2.5%, so phosphorus removal is mainly through sludge discharge; since the growth of sludge has a certain limit, it is not easy to increase, so it is difficult to improve the phosphorus removal effect. When the P / BOD value is high more so;

[0021] (2) It is also difficult to further improve the denitrification effect, and the internal circulation volume is generally limited to 2Q, which should not be too high

[0030] (1) Operation, maintenance, and maintenance need to be carried out by relative professionals. If there are no professionals, it is not suitable to use the MBR method;

[0031] (2) The operating cost of the MBR membrane is relatively high;

[0032] (3) High manufacturing cost;

[0033] (4) Membrane life is short, generally 3 to 5 years

[0036] The current situation of traditional process methods and materials is high energy consumption, high manufacturing cost, short life, strong process pertinence and other problems, and the invention is made to solve the above problems.

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