A kind of method and device of pulse energy-saving MBR

A pulse and control switch technology, applied in chemical instruments and methods, sustainable biological treatment, water/sludge/sewage treatment, etc., can solve the problems of easy membrane pollution, high energy consumption of aeration, high operating costs, etc., and achieve relief Effects of membrane fouling, reduction of EPS release, improvement of hydrodynamic performance and mass transfer coefficient

Active Publication Date: 2017-11-17
GO HIGHER ENVIRONMENT GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a pulse energy-saving MBR method and device, which solves the problems of high aeration energy consumption, easy membrane pollution, and high operating costs in the existing MBR.

Method used

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  • A kind of method and device of pulse energy-saving MBR

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Embodiment 1

[0031] like figure 1 Described, a kind of pulse energy-saving MBR device, wherein, comprise membrane tank 4, membrane group device 3, aeration pipe 8 and aeration machine 1, the water inlet of membrane tank 4 is equipped with water inlet pump 5, and membrane group device 3 is set In the membrane tank 4, the membrane group device 3 includes several membrane elements 32 and water collection pipes 31, the membrane elements 32 are arranged in the membrane group device 3 at intervals, and each membrane element 32 is provided with a water outlet for collecting clean water , and the water outlet on each membrane element 32 is in communication with the water collection pipe 31, the outlet of the water collection pipe 31 is connected with the produced water pump 6, the aeration pipe 8 is located below the membrane stack 3, and the outlet of the aerator 1 is sequentially Connect with according to control switch 2 and aeration pipe 8. The control switch 2 can automatically control the p...

example 1

[0038] A domestic sewage treatment project with a treatment capacity of 1000m 3 / d, raw water COD Cr 200-500mg / L, ammonia nitrogen 40-50mg / L, SS100-230mg / L. The pulse energy-saving type MBR device of the present invention is used for processing, wherein the membrane element 32 used is a flat film; the filler 7 is a polyurethane filler, and the shape of the filler 7 is a honeycomb sponge.

[0039] COD of effluent after treatment Cr 20-50mg / L, ammonia nitrogen<3mg / L, SS<1mg / L. The cleaning cycle is increased from 120 days to 180 days, and the cleaning cost is reduced by 30%.

example 2

[0041] A waste water treatment and reuse project in an industrial park, with a treatment capacity of 500m 3 / d, raw water COD cr 300-800mg / L for ammonia nitrogen, 40-90mg / L for ammonia nitrogen, and 250-400mg / L for SS. The pulse energy-saving MBR device of the present invention is used for processing, wherein the membrane element 32 used is a hollow fiber membrane; the filler 7 is a combined filler; the shape of the filler 7 is a sheet. After treatment, effluent COD cr Less than 50mg / L, turbidity less than 1NTU. The system has been running for one month, and the transmembrane pressure (TMP) has risen from 2.1KPa to 6.3kPa. The membrane pressure difference has risen steadily and the operation is stable.

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Abstract

The invention relates to a pulsed energy-saving MBR (membrane bioreactor) method and device. The method comprises the following steps that (1) wastewater is pumped into a membrane tank by a feed pump and enters a membrane module after being mixed with activated sludge and / or fillers in the membrane tank; (2) gas is supplied to an aerator pipe by an aerator, a control switch is automatically opened or closed according to changes of water and gas pressures to form pulsed aeration, the sludge mixed liquor and / or the fillers are uniformly distributed in the membrane module through aeration and the bubbles generated through aeration drive the fillers to continuously and effectively air-scour and scrub membrane components; and (3) water is sucked from a collector pipe of the membrane module by a water yielding pump, the suction pressure is 1-100kPa and the yielded water flux is 1-100L / m<2>.h. The method has the advantages of low energy consumption, low membrane pollution level and low equipment investment cost. The device has a simple structure and small floor area, is concise to operate and convenient to automatically operate and control.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, in particular to a method and device of a pulse energy-saving MBR, which belongs to a waste water treatment process and integrated equipment. Background technique [0002] Membrane Bioreactor (MBR for short) is one of the most potential wastewater recycling technologies developed at the end of the 20th century. MBR is a high-efficiency water treatment system developed by introducing membrane separation technology into the wastewater biological treatment system and utilizing the respective advantages of membrane separation technology and biological reaction technology. It has the advantages of excellent and stable effluent quality, small footprint, high concentration of activated sludge, less residual sludge, and simple operation and management. [0003] As an efficient water treatment technology, the MBR process is in the stage of development and perfection, and it still has cer...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/08C02F3/12
CPCY02W10/10
Inventor 陈福泰杨艳
Owner GO HIGHER ENVIRONMENT GRP CO LTD
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