MBBR (Moving Bed Biofilm Reactor) used for electroplating wastewater treatment

Abstract

The invention discloses an MBBR (Moving Bed Biofilm Reactor) used for electroplating wastewater treatment. The MBBR comprises a reaction tank and a sedimentation tank, wherein the water inlet end of bottom of the reaction tank is equipped with a water inlet tube, a gas inlet tube and at least one submersible mixer; the bottom of the reaction tank is equipped with an aeration tube and a filler sedimentation ditch with a filler discharge tube; the inner part of the filler sedimentation ditch is equipped with a spiral conveyor; the water outlet end of the upper part of the reaction tank is equipped with a rotary scraper plate and a screen; the inner part of the reaction tank is added with suspended filler; the water inlet end of the sedimentation tank is equipped with a guide slot; the upperpart of the tank body is equipped with a water outlet weir and a water outlet tube; and the bottom of the tank body is equipped with a sludge discharge tube and a sludge reflux tube. The rotary scraper plate and the submersible mixer are arranged in the reactor, so that a circulating flowing state of the suspended filler is guaranteed; the filler sedimentation ditch is arranged for timely discharging scaled filler, so that the biological treatment effect, on electroplating wastewater with poor biodegradability and high salinity, of the MBBR process can be effectively strengthened.

Description

technical field [0001] The invention relates to water treatment equipment, in particular to an MBBR reactor (Moving Bed Biofilm Reactor, moving bed biofilm reactor) used for electroplating wastewater treatment. Background technique [0002] The MBBR process uses the basic principle of the biofilm method. By adding a certain amount of suspended filler to the reactor, the biomass and biological species in the reactor are increased, thereby improving the treatment efficiency of the reactor. It has both traditional fluidized bed and biological The advantages of both contact oxidation methods are an efficient sewage treatment method. The MBBR reactor relies on the aeration in the aeration tank and the lifting effect of the water flow to keep the carrier in a fluidized state, thereby forming suspended activated sludge and attached biofilm, which makes the moving bed biofilm use the entire reactor space , and give full play to the superiority of both the attached phase and the sus...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of suspended filler floating and accumulating near the effluent screen and depositing at the bottom of the pool due to scaling when the MBBR reactor treats electroplating wastewater, the present invention provides a MBBR reactor for electroplating wastewater treatment. Rotating scraper and submersible mixer are installed in the center to ensure the circulating fluidization state of the suspended filler; on the other hand, the scaled filler is discharged in time through the filler sedimentation ditch, which effectively strengthens the biochemical treatment effect of the MBBR process on electroplating wastewater with poor biodegradability and high salinity

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