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MBR (membrane bioreactor) wastewater treatment process

A sewage treatment and process technology, applied in the field of MBR sewage treatment process, can solve the problems of high energy consumption, poor sewage treatment effect, difficult sludge treatment, etc., and achieve good results

Inactive Publication Date: 2019-04-05
成都明道食品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main methods to control membrane fouling include membrane group aeration, chemical cleaning and backwashing with clean water; however, the membrane bioreactor process has high energy consumption and high sludge yield coefficient in practical engineering applications, and it is difficult to treat excess sludge Large, leading to poor sewage treatment effect

Method used

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Embodiment Construction

[0017] The present invention will be further described in detail in conjunction with specific embodiments below.

[0018] A kind of MBR sewage treatment process, comprises the following steps:

[0019] Step 1, performing hydrophilic treatment on the membrane module;

[0020] Step 2. Fix the membrane module in the aeration tank, and place the membrane module vertically and stably with the bottom of the tank;

[0021] Step 3. After filtering the large particles of impurities in the wastewater, add water, activated carbon and activated sludge to the aeration tank at a ratio of 3:0.5:1 or 3:0.8:1.2;

[0022] Step 4. After aeration for 3h-4h, extract the sewage and add reducing agent to the sewage;

[0023] Step 5, add neutralizing agent to the reduced water according to the ratio of water and neutralizing agent 3:1, and neutralize for 3h-4h;

[0024] Step 6. Naturally settle the neutralized water in the sedimentation tank for 1h-1.5h;

[0025] Step 7: Extract the upper layer o...

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PUM

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Abstract

The invention discloses an MBR (membrane bioreactor) wastewater treatment process, comprising the steps of I, subjecting a membrane component to hydrophilicity treatment; II, fixing the membrane component to an aeration tank, and stably placing the membrane component perpendicular to the bottom of the aeration tank; III, filtering large particulate impurities from wastewater, adding water, activated carbon and activated sludge into the aeration tank in a ratio of 3:0.5:1 or 3:0.8:1.2; IV, aerating for 3-4 h, extracting wastewater, adding a reducing agent into the wastewater; V, adding a neutralizer into the reduced water in a ratio of the water to the neutralizer being 3:1, and allowing to neutralize for 3-4 h; VI, allowing the neutralized water to naturally settle in a settling tank for 1-1.5 h; VII, extracting clear supernate, adding an oxidant into the clear supernate, and allowing to oxidize for 1-2 h before emission. The process herein is effective in treating MBR wastewater to prevent secondary pollution.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to an MBR sewage treatment process. Background technique [0002] Membrane bioreactor process is a kind of sewage treatment process that has developed rapidly recently. It mainly combines membrane separation technology and biological reaction technology organically. Due to the filtration effect of the membrane, the organisms are completely trapped in the bioreactor, which realizes the complete separation of hydraulic retention time and sludge age, and maintains a high MLSS in the bioreactor. Strong nitrification ability and high pollutant removal rate. At present, the main methods to control membrane fouling include membrane group aeration, chemical cleaning and backwashing with clean water; however, the membrane bioreactor process has high energy consumption and high sludge yield coefficient in practical engineering applications, and it is difficult to treat excess sludg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12
CPCC02F3/1268Y02W10/10
Inventor 洪文刊
Owner 成都明道食品有限公司
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