A moving bed biofilm coupled osmotic membrane bioreactor

Abstract

The invention provides a moving-bed biological membrane coupled osmosis membrane biological reactor. The moving-bed biological membrane coupled osmosis membrane biological reactor comprises a moving-bed biological membrane reactor, a forward osmosis membrane separation device and a reverse osmosis membrane separation device, wherein the moving-bed biological membrane reactor comprises a moving-bed biological membrane reactor body with an opened top part, and a detachable sealing cover arranged at the position of the opening of the top part of the moving-bed biological membrane reactor body; the moving-bed biological membrane reactor body is provided with a water inlet, a mud outlet and a water outlet; the inner cavity of the moving-bed biological membrane reactor body is provided with an aeration device and filled with a biological carrier; the forward osmosis membrane separation device comprises a forward osmosis membrane assembly, a driving liquid water storage tank and a driving fluid recovery box; and the reverse osmosis membrane device comprises a reverse osmosis membrane assembly and a high-pressure pump. The invention has the following beneficial effects: almost no membrane pollution occurs in the process of treatment; the removal efficiency of nutrient substances is significantly increased; the quality of effluent water is good, and membrane flux is high; and greenness, economy and sustainability are realized.

Description

technical field [0001] The invention relates to a moving bed biofilm coupled permeable membrane bioreactor. Background technique [0002] Forward osmosis membrane bioreactor is a kind of sewage treatment system formed by combining forward osmosis technology and membrane bioreactor, which integrates the interception effect of forward osmosis and the degradation effect of activated sludge. Forward osmosis membrane bioreactor is a kind of membrane bioreactor with low membrane fouling, almost no membrane fouling or all membrane fouling is reversible. Its advantages are as follows: (1) The forward osmosis membrane operates under low pressure or no pressure conditions, the membrane fouling probability is low, and the energy consumption is low; (2) The diluted drive solution is reused after passing through the reverse osmosis system, and no concentrated brine is produced and has High pure water recovery rate; (3) Relying on the interception effect of forward osmosis, the effluent ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the problems of traditional forward osmosis membrane bioreactors such as salt accumulation in the reactor, membrane fouling during long-term operation, and low efficiency of the reactor for removing nutrients, the present invention proposes a method using forward osmosis membrane, reverse osmosis membrane and Porous suspension ball packing, combined with multiple treatment methods, has the characteristics of good effluent water quality, low operation and management costs, low energy consumption in the membrane permeation process, green and sustainable moving bed biofilm coupled osmotic membrane bioreactor

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