Integrated oxidation ditch

Abstract

The invention relates to an improved integrated oxidation ditch, which comprises an oxidation ditch body, an aeration device at the bottom or the lower middle part and a built-in partition precipitation zone at the tail end of a treatment flow. The integrated oxidation ditch is characterized in that: a suspended filler is filled in the oxidation ditch body, a filler intercepting net is arranged at the water inlet of at least the precipitation zone, and a transverse herringbone folded plate or a bent pipe mud-water separation filler is arranged in the precipitation zone. The quantity of microbes in the oxidation ditch is increased, the treatment volume load is improved, the increased biomass is mainly centralized on the suspended filler, the actual suspended sludge concentration in the water of the oxidation ditch is not increased or reduced and can be controlled to be less than 3,000mg / l, the built-in partition precipitation zone can be designed according to the high load, the biomass is increased, the area of the precipitation zone is not increased or properly reduced, the occupation area of the oxidation ditch is actually and effectively saved, the occupation is saved by 1 / 3 to 1 / 5 compared with a common deep oxidation ditch and by 10 to 20 percent compared with a deep oxidation ditch with a precipitation zone, the suspended biological filler can save the running energy consumption and the running energy consumption can be reduced by 20 to 30 percent.

Description

technical field [0001] The invention is an improvement to the integrated oxidation ditch, and particularly relates to an integrated oxidation ditch with high biomass, less suspended sludge in water, small built-in sedimentation area, bottom aeration and deep ditch type integrated oxidation ditch. Background technique [0002] As an innovation of the activated sludge process, the oxidation ditch process has the characteristics of simple process flow, convenient operation and management, stable treatment effect, and good effluent quality compared with the traditional activated sludge process. It is a mature method that is widely used in sewage treatment. Water treatment technology occupies a very high application proportion in water treatment. Oxidation channels usually use surface aeration devices such as rotary discs, rotary brushes, surface aerators, etc., to simultaneously supply oxygen to the water and push flow circulation. However, since the mixed mud water circulation ...

AI Technical Summary

Problems solved by technology

However, high sludge concentration will inevitably increase the concentration of suspended sludge in the ditch, and the high concentration of suspended sludge in the ditch makes the separation of mud and water can only be designed according to the lower surface load, resulting in a larger area of ​​the sedimentation area, thus The area occupied by the oxidation ditch is increased, and the area saved by using the deep ditch may be offset by the increase in the area of ​​the sedimentation area, so the actual land saving area is limited

Secondly, the proportion of flocculated epidemic sludge in the sewage is generally greater than 1, and the concentration of suspended sludge in the water increases, so that in order to realize the hydraulic cycle of the oxidation ditch, it is necessary to increase the operating energy consumption, so the high sludge concentration brings about an increase in operating energy consumption

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