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A method for treating sewage by ozone biological activated carbon technology in membrane coagulation reactor

A technology of biological activity and treatment method, which is applied in the field of sewage treatment, can solve the problems of sewage treatment plants in the park that cannot meet the discharge standards and tail gas needs to be treated separately, and achieve the effects of solving non-compliance discharge, reducing ozone consumption, and prolonging the operation cycle

Active Publication Date: 2015-10-14
HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The ozone oxidation tail gas is used as the aeration source of the BAC system, which solves the problem that the tail gas needs to be treated separately and reduces the complexity of the process system
The process system has a high degree of automation and easy management and maintenance, which fundamentally solves the problem that the sewage treatment plant in the park cannot meet the discharge standards

Method used

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  • A method for treating sewage by ozone biological activated carbon technology in membrane coagulation reactor
  • A method for treating sewage by ozone biological activated carbon technology in membrane coagulation reactor
  • A method for treating sewage by ozone biological activated carbon technology in membrane coagulation reactor

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Effect test

Embodiment 1

[0045] A membrane coagulation reactor ozone biological activated carbon technology for treating sewage,

[0046] (1) Introduce the pre-treated sewage into the MCR system to make the turbidity of the produced water ≤0.5NTU; the indicators after the pre-treatment are as follows:

[0047]

[0048] Among them, the MCR system adopts submerged hollow fiber membrane or submerged flat membrane, the membrane separation pore size is 0.3μm, and the membrane flux is 60L / m 3 h;

[0049] (2) The product water of the MCR system enters the O 3 Oxidation system for oxidation; treated water in O 3 Oxidation system residence time 30min, O 3 BOD of water produced in oxidation system 5 / COD Cr ≥0.15;

[0050] (3)O 3 The water produced from the oxidation system enters the BAC system, and the treated water stays in the BAC system for 2 hours; through the synergistic effect of activated carbon adsorption and microbial degradation, the pollutants in the wastewater are completely decomposed, ...

Embodiment 2

[0055] A kind of membrane coagulation reactor ozone biological activated carbon technology is characterized in that comprising the following steps:

[0056] (1) Introduce the pre-treated sewage into the MCR system to make the turbidity of the produced water ≤0.5NTU; the indicators after the pre-treatment are as follows:

[0057]

[0058] Among them, the MCR system adopts submerged hollow fiber membrane or submerged flat membrane, the membrane separation pore size is 0.1μm, and the membrane flux is 50L / m 3 h;

[0059] (2) The product water of the MCR system enters the O 3 Oxidation system for oxidation; treated water in O 3 Oxidation system residence time 30min, O 3 BOD of water produced in oxidation system 5 / COD Cr ≥0.15;O 3 The ozone generator in the oxidation system uses an oxygen source, and the oxygen concentration of the oxygen source is ≥85%. MCR system membrane flux is 35L / m 3 h; the residence time in the BAC system is 1.5h.

[0060] (3)O 3 The water produ...

Embodiment 3

[0066] A membrane coagulation reactor (MCR)-ozone (O 3 )-Biologically activated carbon (BAC) technology park sewage treatment plant's treatment method for sewage, in which the specific indicators of pollutants are as follows (the table is the average value of long-term monitoring):

[0067]

[0068] (1) Introduce the water produced from the biochemical sedimentation tank of the above-mentioned park sewage treatment plant into the raw water tank;

[0069] (2) The water in the raw water pool passes through the raw water lifting pump and enters the MCR pool. Under the negative pressure suction of the MCR suction pump, the water in the MCR pool is intercepted by the membrane, and the MCR produced water enters the MCR produced water pool; the MCR membrane Pore ​​size 0.04μm, membrane flux 41L / m 3 h, produced water turbidity ≤ 0.3NTU, chromaticity ≤ 100 times, COD Cr ≤70mg / L;

[0070] (3) MCR product water through O 3 Inlet pump enters O 3 The reaction tower, the ozone gener...

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Abstract

The invention discloses a wastewater treatment method, and specifically in particular relates to an upgrading treatment method for a sewage treatment plant in a park based on a membrane coagulation reactor-ozone-biological activated carbon technique. The method comprises the following steps: introducing wastewater of the park after pretreatment to an MCR (Membrane Chemical Reactor) system to befor treatinged, so that the turbidity of contributed water is less than or equal to 0.5NTU (Number of Transfer Units) and accords with some other indexes; then, oxidizing the contributed water of the MCR system in an O3 oxidizing system; introducing the contributed water of the O3 oxidizing system to a BAC (Basic Aluminum Chloride) system, and remaining the water treated in the BAC system for 1-5 hours; and thoroughly decomposing pollutants in wastewater through synergistic effect of activated carbon adsorption and micro-biological degradation, and so that the contributed water stably contributing water to meets the discharge demands. The method disclosed by the invention has the advantages that the operational stability of the system is improved; ozone tail gas is used for aeration of the BAC system, so that the tail gas treatment problem is solved; the aerating efficiency of the BAC system is improved; the system is in modular configuration, is automatically controlled and strong in maintainability.

Description

technical field [0001] The invention relates to a sewage treatment method, in particular to a sewage treatment plant upgrading treatment method based on membrane coagulation reactor-ozone-biologically activated carbon technology. Background technique [0002] Membrane coagulation reactor (MCR) is a method that combines coagulation process and ultrafiltration membrane separation process. Coagulation and mud-water separation are completed in the same system. water. Membrane coagulation reactor technology can adapt to a wide range of influent water quality, and the removal efficiency of suspended solids is extremely high. It is combined with reverse osmosis and other technologies, and its application in the field of reclaimed water reuse is increasingly valued. [0003] The separation function of membrane coagulation reactor technology is the ultrafiltration grade separation membrane. According to the configuration, the ultrafiltration membrane module can be divided into roll ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/44C02F1/78C02F1/28
Inventor 谢柏明邱晖张锋赵经纬丁国良鲁大政方丽娜
Owner HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
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