Reaction device for purification of coking wastewater by activated sludge process

Abstract

Belonging to the technical field of coking wastewater treatment, the invention provides a reaction device for purification of coking wastewater by activated sludge process, and solves the problems ofincomplete mud-water separation and the like in the traditional process. The reaction device for purification of coking wastewater by activated sludge process includes a reactor, a sludge storage apparatus and a sliding rail erected between the reactor and the sludge storage apparatus, a sludge rotating apparatus is arranged on the sliding rail, and does reciprocating motion along the sliding railbetween the reactor and the sludge storage apparatus, the sludge rotating apparatus includes a rotating shaft and a sludge plate, the rotating shaft can drive the sludge plate to do circumferential rotation around the rotating shaft, the rotating shaft and the sludge plate are in detachable connection, the sludge plate is internally filled with activated sludge, the sludge plate enables water topass through and prevents the leakage of activated sludge, two side surfaces of the sludge plate are rotating shaft-centered, and both fall into upstream faces and downstream faces, and the upstream faces of the sludge plate are equipped with a plurality of channels, which are used for collecting the sludge precipitated out of the coking wastewater during aeration.

Description

technical field [0001] The invention belongs to the technical field of coking wastewater treatment, and relates to a reaction device for purifying coking wastewater by activated sludge method. Background technique [0002] Coking wastewater contains a large number of organic pollutants and inorganic pollutants, among which organic pollutants include phenol, benzene, toluene and solvent oil, etc., inorganic pollutants include hydrogen cyanide, hydrogen sulfide and ammonia, etc., and also include some solid residues. In the process of dealing with these pollutants, multi-stage treatment is required, the process is extremely complicated and the operation cost is high. At the same time, due to the huge amount of organic pollutants in the coking wastewater, the biochemical treatment takes a very long time, and the temperature and pH requirements during the treatment process are extremely high. [0003] At present, the treatment of coking wastewater mostly adopts the activated sl...

AI Technical Summary

Problems solved by technology

Then the sludge and water are separated, most of the sludge is returned to the aeration tank, and the excess is discharged from the activated sludge system. In the traditional process, the sludge and water are separated after the aeration tank is required, and then the sludge is returned, etc. Multiple processes, but the sludge loss in the traditional process is relatively large, and the separation of mud and water is not thorough enough

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