Sewage treating apparatus of point-division feed water multilevel biomembrane reactor

Abstract

The invention discloses a sewage treating device with a multiple water inlet point multi-grade bioflim reactor. N pieces of separating plates are vertically arranged inside a tank to divide the tank into N+1 reaction pools in series. The adjacent reaction pools are orderly communicated with the lower part to the upper part, wherein, the first N-1 grades are functioned with anaerobic and aerobic reaction alternately, every pool is provided with flexible assembled fillers; the N grad is the aerobic reaction area with flexible assembled filler, and the N+1 grad is the filtering and depositing area; a water inlet pipe is arranged at the top of the tank and is respectively communicated with the water inlet of the first N-1 grades, applying a water supply with multiple points; a water outlet pipe is led out of the upper part of the N+1 grade reaction pool; the bottom parts of the first N grade reaction pools are provided with an underwater aeration device, and the bottom part of the N+1 grade reaction pool is provided with a backwashing pipe. The bottom part of every pool is provided with a sludge discharge pipe. The treatment device has the advantages of great impact loading resistant ability, high treatment efficiency, low operation energy consumption, less left sludge, simple procedure, small land occupation, low investment and convenient operation.

Description

technical field [0001] The invention belongs to the technical fields of sewage treatment and environmental protection, and in particular relates to a sewage treatment equipment for point-inflow multi-stage biofilm reactors. technical background [0002] At present, in sewage treatment technology, the general sewage nitrogen and phosphorus removal process is A 2 / O and its various improved forms, all of which require nitrifying liquid and sludge return equipment to meet the requirements of nitrogen and phosphorus removal. In practical engineering applications, the process is complicated, the operation is cumbersome, the operation cost is high, and the effect of nitrogen and phosphorus removal is difficult to further improve. The biofilm reactor technology for sewage treatment is developing rapidly. For example, the Chinese patent number is 200420092487.2, and the invention name is "anaerobic and aerobic integrated fixed bed biofilm reactor"; the patent number is 200420060530...

AI Technical Summary

Problems solved by technology

The former two are single-stage reactors, which are quite different from the multi-stage space separation of this reactor. Although they have a compact structure, single-stage reactors are not conducive to the construction of a variety of advantageous microbial flora growth environments with different functions. Treatment The efficiency is low; the latter is quite different in structure from this reactor, and this reactor has a high-efficiency filtration sedimentation area

In addition, the latter has the problems of insufficient single-point denitrification carbon source, unsatisfactory denitrification effect, and large amount of chemical phosphorus removal sludge

At present, there is no report on the sewage treatment equipment of multi-stage biofilm reactor with point-inflow at home and abroad.

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