Anoxic tank water distribution system and method for integrated domestic sewage treatment equipment

Abstract

The invention discloses an anoxic tank water distribution system and method for integrated domestic sewage treatment equipment. The water distribution system mainly comprises a water pre-distribution area, a water distribution area, a water distributor and a water collection area. The water distribution method comprises four stages of premixing, gravity water distribution, upward water distribution and sludge backflow mixing. According to the water distribution system and method, gravity water distribution is adopted, the energy consumption of the system can be saved, uniform water distribution is guaranteed, sludge deposition is prevented, and the carbon removal, nitrogen removal and phosphorus removal effects are improved.

Description

technical field [0001] The invention belongs to the technical field of environmental protection water treatment equipment, and in particular relates to a water inlet and distribution equipment for sewage treatment. Background technique [0002] At present, the concept of environmental protection is deeply rooted in the hearts of the people, and the discharge of sewage up to the standard is of far-reaching and significant significance to the healthy and green development of human civilization. In recent years, my country has vigorously developed sewage treatment systems in cities and crowded areas, and in some areas far away from crowded areas and large-scale sewage treatment systems, due to their small sewage discharge and high pipeline transportation costs, integrated domestic sewage is urgently needed Handle equipment. [0003] The nitrogen and phosphorus removal technologies of domestic sewage are mainly AAO process, oxidation ditch method and SBR method. The biochemical...

AI Technical Summary

Problems solved by technology

[0006] An aerobic and anaerobic sludge digestion biochemical device (CN111453843A) is disclosed in the prior art. The main pipeline frame is equipped with branch pipelines, floating and sinking tube cabins, agitators, sealed air cabins, microporous aeration units, packing Unit and other structures; this scheme uses a submersible mixer to mix the water out of each pipeline evenly, but there are disadvantages such as dead angle in the mixing, difficulty in selecting the type of the mixer with a small processing capacity, high energy consumption and including underwater electrical equipment, etc., high daily operating costs, Complex maintenance;

[0007] A high-efficiency synchronous nitrification and denitrification reactor (CN112250186A) is also disclosed in the prior art. The reactor includes an anoxic zone, and the anoxic zone includes an anoxic zone body, a water distribution branch pipe, an air stirring system and a water collection tank; This kind of scheme adopts air agitation, that is, the air pipe is passed into the bottom of the anoxic tank, and the perforated agitation method is adopted. The main problem of this kind of scheme is that the air pipe is easy to block, which will easily cause the dissolved oxygen in the anoxic tank to be too high, which will affect the denitrification. Consumes fan air volume, increasing energy consumption

[0008] None of the existing water distribution systems for anoxic ponds can solve the problem of uneven water distribution in anoxic ponds, or although they solve the problem of uniform water distribution, they reduce the efficiency of phosphorus removal and denitrification, which in turn leads to the deterioration of effluent quality

Images