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Sewage treating apparatus with baffling, aerating, boosting and gravitationally outflowing membrane bioreactor

A technology of sewage treatment equipment and bioreactor, which is applied in the field of sewage treatment equipment of baffled aeration pressurized gravity outflow membrane bioreactor, can solve the problems of high energy consumption, difficult cleaning and maintenance, etc., and achieve reduced operating energy consumption, Simple operation and maintenance, easy automatic control effect

Inactive Publication Date: 2007-05-23
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The membrane flux of the separated membrane bioreactor is large, and the cleaning and maintenance of the membrane modules is convenient, but the energy consumption is high; while the energy consumption of the integrated membrane bioreactor is low, but because the membrane modules are submerged in the mixed solution, cleaning and maintenance are difficult

Method used

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  • Sewage treating apparatus with baffling, aerating, boosting and gravitationally outflowing membrane bioreactor
  • Sewage treating apparatus with baffling, aerating, boosting and gravitationally outflowing membrane bioreactor
  • Sewage treating apparatus with baffling, aerating, boosting and gravitationally outflowing membrane bioreactor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The domestic sewage containing COD of 200-600mg / L, ammonia nitrogen of 50-100mg / L, and SS of 100-200mg / L enters the baffle aeration pressurized gravity flow membrane bioreactor from the water inlet, and the effective volume of the reactor is It is 80L, the sludge concentration is 2000-5000mg / L, and the water temperature is 10-30°C. The COD of the effluent is 20-60mg / L, the ammonia nitrogen is 0.5-15mg / L, and SS is not detected.

Embodiment 2

[0032] The landfill leachate containing 6000-18000mg / L of COD and 1400-2000mg / L of ammonia nitrogen is first treated by an anaerobic filter with an effective volume of 63L, and then enters the baffle aeration pressurized gravity outflow membrane from the water inlet Bioreactor, the effective volume of the membrane bioreactor is 80L, the sludge concentration is 4000-10000mg / L, and the water temperature is 15-30°C. The COD of the effluent is 700-1000mg / L, the ammonia nitrogen is 6-25mg / L, and SS is not detected.

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Abstract

The present invention relates to environment protecting technology, and is especially one kind of membrane bioreactor sewage treating apparatus. The apparatus consists of baffling and aerating bioreactor and membrane assembly, the baffling and aerating bioreactor is biochemical reaction area divided with baffle into two or more independent reaction areas; and the membrane assembly is installed outside the baffling and aerating bioreactor. The present invention needs no pump for the circulation of mixed liquid between the biochemical reaction area and the membrane assembly, has low power consumption and increased membrane water permeating amount.

Description

technical field [0001] The invention relates to environmental protection technology, and belongs to equipment for treating sewage by using biochemical technology and membrane separation technology, in particular a sewage treatment equipment for a baffle aeration pressurized gravity outflow membrane bioreactor. Background technique [0002] Membrane bioreactor is a kind of sewage treatment equipment composed of biochemical treatment unit and membrane module. One of the main problems of the traditional activated sludge method is that the mud-water separation is carried out by sludge settlement. Due to the poor sedimentation performance of the sludge, the quality of the effluent is poor. And because the membrane can trap solid and colloidal substances in the bioreactor, the effluent can be directly discharged into surface water or reused for cooling water, toilet flushing water, and greening water, and can be used as industrial water after further treatment. The high-efficienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12C02F1/44B01D61/14C02F3/02C02F3/10
CPCY02W10/10
Inventor 刘俊新陈少华
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI