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A method of using microbial battery to treat yuba wastewater

A microbial battery and microbial technology, applied in biological water/sewage treatment, electrochemical biological combination treatment, biochemical fuel cell, etc., can solve the problems of low treatment efficiency and high operating costs

Active Publication Date: 2021-02-26
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The waste water from the production of bean curd sticks mainly contains starch, protein, and fat, etc., and the concentration of organic matter is extremely high. Physical and chemical methods are used as the main method to solve the problem, such as: adding drugs to flocculate, then sedimentation, or air flotation, but this The disadvantage of this method is low processing efficiency and high operating costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A treatment of yuba wastewater requires the following reagents and consumables:

[0019] Screening medium

[0020] Glucose 1g / L, peptone 0.158g / L, beef extract 0.04g / L, yeast powder 0.5g / L, KCl 0.13g / L, NaH 2 PO 4 2H 2 O 3.32g / L, Na 2 HPO 4 12H 2 O 10.36g / L.

[0021] Nfion117 proton semipermeable membrane

[0022] Biofuel Cell Structure

[0023] The battery consists of two square glass containers connected by a flange in the middle, each container is 8 cm long, 8 cm wide, and 8 cm high. The intermediate interface clamps the proton semipermeable membrane and seals it with a rubber ring. One chamber is the anode and one chamber is the cathode. The anode is filled with bean curd waste water, and the cathode is filled with deionized water. When the battery is working, an air compressor is used to continuously feed air into the cathode chamber.

[0024] Approach:

[0025] 1. Collect river mud samples and put them into sterilized collection tubes, and use screeni...

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PUM

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Abstract

The invention discloses a method for treating bean curd stick wastewater, which comprises collecting river mud samples and adopting a screening culture medium to separate microorganisms. After culturing, rod-shaped microorganisms are selected. Cultivate at 37°C for 5 days, and inoculate into bean curd stick wastewater with an inoculum amount of 6-10%. The bean curd stick wastewater after inoculation is added to the anode of the fuel cell, and cultured at normal temperature for treatment. Through the treatment of this method, the COD (chemical oxygen demand) of the bean curd stick wastewater is 16496 mg / L, and after culturing for 20 days, the lowest measured COD is 668 mg / L. The COD removal rate reaches 95.96%, which can be directly discharged into the environment. The invention provides a method for treating yuba wastewater.

Description

technical field [0001] The invention relates to the field of food processing, in particular to a method for treating bean curd stick wastewater. Background technique [0002] The waste water from the production of bean curd sticks mainly contains starch, protein, and fat, etc., and the concentration of organic matter is extremely high. Physical and chemical methods are used as the main method to solve the problem, such as: adding drugs to flocculate, then sedimentation, or air flotation, but this The disadvantage of this method is low processing efficiency and high operating costs. The yuba wastewater has a very high content of degradable organic matter and less toxic and harmful substances. It is treated by microorganisms, which not only has high treatment efficiency, but also outputs part of the energy in the form of electricity. Contents of the invention [0003] The object of the present invention is to provide a method for treating bean curd stick wastewater. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/34H01M8/16C02F103/32
CPCC02F3/005C02F3/34C02F2103/32C02F2305/06H01M8/16Y02E60/50
Inventor 魏泉增张永清高雪丽
Owner XUCHANG UNIV