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Method for removing azo dye mixed pollutant wastewater through bio-electrochemical reactor system

A bioelectrochemical and reactor system technology is applied in the treatment field of azo dye mixed polluted wastewater, which can solve the problems of low efficiency, slow treatment speed, high cost of physical and chemical methods, and achieve high efficiency, rapid reduction and mineralization, The effect of low energy consumption

Active Publication Date: 2017-08-22
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problems of the existing anaerobic biological method that the treatment speed of azo dye wastewater is slow, the efficiency is low, and the cost of the physical and chemical method is high, and to provide an anaerobic-aerobic continuous flow reaction device using electric stimulation to remove the azo dye wastewater. Method for polluting waste water with nitrogen dyes

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  • Method for removing azo dye mixed pollutant wastewater through bio-electrochemical reactor system
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  • Method for removing azo dye mixed pollutant wastewater through bio-electrochemical reactor system

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specific Embodiment approach 1

[0025] Specific embodiment one: The method for removing azo dye mixed polluted wastewater by using electric stimulation anaerobic-aerobic continuous flow reaction device in this embodiment is carried out according to the following steps:

[0026] 1. Construction of the bioelectrochemical reactor system: The bioelectrochemical reactor system consists of a reactor shell 1, a partition 2, a secondary sedimentation tank 3, a first reflux pump 4, a second reflux pump 5 and an adjustable DC power supply 6 Composition; the clapboard 2 divides the shell 1 into an anaerobic pool 1-1 and an aerobic pool 1-2; the lower part of the clapboard 2 has a water hole 2-1; an agitator 1-1 is arranged in the anaerobic pool 1-1 1-1 and a pair of electrodes 1-1-2; the electrodes 1-1-2 are connected to the adjustable DC power supply 6; the lower end of the side wall of the anaerobic tank 1-1 is provided with a water inlet 1-1-3 and nitrifying liquid Return port 1-1-4, sludge return port 1-1-5 at the ...

specific Embodiment approach 2

[0034] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in step two a, the vitamin solution is composed of vitamin H 2.0mg, folic acid 2.0mg, pyridoxine hydrochloride 10.0mg, thiamine 5.0mg, riboflavin 5.0 mg of niacin, 5.0 mg of nicotinic acid, 5.0 mg of calcium D-pantothenate, 0.1 mg of vitamin B12, 5.0 mg of p-aminobenzoic acid, 5.0 mg of lipoic acid and 1L of distilled water; the others are the same as in Embodiment 1.

specific Embodiment approach 3

[0035] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the mineral element liquid is made of nitrilotriacetic acid 1.5g, MgSO 4 ·7H 2 O 3.0g, MnSO 4 ·H 2 O 0.5g, NaCl 1.0g, FeSO 4 ·7H 2 O0.1g, CoCl 2 ·6H 2 O 0.1g, CaCl2 0.1g, ZnSO 4 ·7H 2 O 0.1g, CuSO 4 ·5H 2 O 0.01g, AlK(SO 4 ) 2 12H 2 O 0.01g, H 3 BO 3 0.01g, Na 2 MoO 4 2H 2 The solution that O 0.01g and 1L distilled water are mixed; Others are identical with specific embodiment 1 or 2.

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Abstract

The invention relates to a processing method of azo dye mixed pollutant wastewater, in particular to a method for removing azo dye mixed pollutant wastewater through a bio-electrochemical reactor system. The technical problems that according to an existing anaerobic organism method, the azo dye wastewater processing speed is low, the efficiency is low, and the cost of physical and chemical methods is high are solved. The method comprises the steps of setting up the bio-electrochemical reactor system; 2, performing sludge cultivation and acclimation on the bio-electrochemical reactor system; 3, operating the bio-electrochemical reactor system. The removal rates of reactor outflow water COD, inorganic nitrogen and azo dyes can reach 89%, 75% and 92% respectively, the mixed pollutant wastewater containing azo dyes can be effectively removed, and the method can be used for sewage treatment projects.

Description

technical field [0001] The invention relates to a method for treating waste water polluted by mixed azo dyes. [0002] technical background [0003] Printing and dyeing wastewater, especially wastewater containing azo dyes, has the characteristics of large discharge, high organic content, high biological toxicity, and high chroma. Its treatment has always been the focus and difficulty in the field of water treatment. Reducing the chroma of azo-containing dye wastewater is a key link in the treatment of dye wastewater. Biological and chemical methods can be used to destroy the color and auxochromic groups of dyes in a targeted manner to decolorize dyes. At the same time, the biological toxicity of dye decolorization products It is also greatly reduced to achieve the purpose of decolorization and detoxification of dye wastewater. Among them, the anaerobic biological method is the main process technology for treating wastewater containing azo dyes. In the process of anaerobic m...

Claims

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Application Information

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IPC IPC(8): C02F3/00C02F3/30C02F101/16C02F101/30C02F101/38
CPCC02F3/005C02F3/30C02F2101/16C02F2101/163C02F2101/308C02F2101/38C02F2203/006C02F2305/06
Inventor 王爱杰姚正李智灵林小秋
Owner HARBIN INST OF TECH
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