Domestic sewage treatment method by intermittent aeration contact oxidation process

Abstract

The invention provides a domestic sewage treatment device and method by intermittent aeration contact oxidation process, wherein the device comprises a regulating reservoir (or water collecting tank), an naerobic pool, an intermittent aeration contact oxidation pool, a deposition pool and pipe-lines, water pumps for connecting these pools, a bagger is arranged on the extremity end of the intermittent aeration contact oxidation pool. The intermittent aeration contact oxidation pool can be charged with agents on the tail end as required, the sludge in the bagger returns to the anaerobic pool for treatment.

Description

technical field [0001] The intermittent aeration contact oxidation method of the present invention is used to treat domestic sewage, and relates to a treatment method and facilities for domestic sewage. It is composed of pipelines, water pumps and other supporting equipment. There are fillers in the intermittent aeration contact oxidation tank, and the tank type adopts a plug-flow design with a mud bucket at the end. From the adjustment tank to the anaerobic tank, there is 90% of the normal treatment water inflow, from the adjustment tank to the intermittent aeration contact oxidation tank, there is 10% of the normal treatment water volume, and the end of the intermittent aeration contact oxidation tank can be selectively added. , and part of the mud hopper sludge is returned to the anaerobic tank. [0002] This method has excellent phosphorus and nitrogen removal functions, and the effluent water quality is stable, and it can also meet the reuse standard according to the de...

AI Technical Summary

Problems solved by technology

But at the same time, it also has many disadvantages: (1) high requirements for automatic control; (2) special drainage equipment (decanter) is required due to the short drainage time and the requirement not to stir the sedimentation sludge layer during intermittent drainage. , and the decanter is very demanding; (3) The post-processing equipment is huge: if the disinfection equipment is very large, the volume of the contact tank is also large, and the drainage facilities and drainage pipes are also large; (4) The decanting depth is generally 1- 2m, this part of head loss is wasted and increases the total head

[0004] While the traditional A / O method, A 2 The / O method is difficult to further improve due to the large amount of reflux water and the limited effect of nitrogen and phosphorus removal.

Images