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A Microwave Ultrasonic Synergistic Microbial Fuel Cell Technology for Treating Excess Sludge

A technology for excess sludge and fuel cells, applied in biochemical fuel cells, biological sludge treatment, sludge treatment, etc., can solve the problems of sludge production pollution, sludge increase, environmental pollution, etc., and achieve good industrial application prospects , no secondary pollution, good effect

Active Publication Date: 2021-12-31
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Nowadays, due to the increasingly stringent environmental protection requirements, the treatment rate of industrial wastewater in my country is high, followed by a sharp increase in the amount of sludge. If it is not properly treated, it will inevitably cause secondary pollution to the environment.
The current treatment methods include landfill, incineration, agricultural use, and making building materials, etc. However, due to the reduction of available land area, the increase of sludge production, the pollution of toxic and harmful gases released by incineration, and the increasingly strict constraints of laws and regulations , the application of these methods is also limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The specific operation steps of adopting the inventive method to process factory excess sludge are:

[0030] Step 1, the anaerobic sludge is placed in the microbial fuel cell reaction chamber as an inoculum, and the graphite electrode pretreated by the Fenton reagent is inserted, wherein the Fe of the Fenton reagent 2+ / H 2 o 2 The mass ratio is 1:5, the electrode plate spacing is 2cm, the electrode plate is connected to an external 1000Ω resistor through a silver wire, and the single-chamber membraneless microbial fuel cell is started. The voltage at both ends of the resistor is collected by the data collector and transmitted to the computer for automatic recording;

[0031] Step 2, dilute 100g of excess sludge with 1400g of nutrient solution, and each liter of nutrient solution is prepared by mixing phosphate solution, trace element solution, and vitamin B mixed solution in a mass ratio=1000:12:5, wherein the concentration of phosphate solution is It is 50mmol / L, wh...

Embodiment 2

[0034] The specific operation steps of adopting the inventive method to process factory excess sludge are:

[0035] Step 1, the anaerobic sludge is placed in the microbial fuel cell reaction chamber as an inoculum, and the graphite electrode pretreated by the Fenton reagent is inserted, wherein the Fe of the Fenton reagent 2+ / H 2 o 2 The mass ratio is 1:5, the distance between the electrode plates is 2cm, the electrode plates are connected to an external 1000Ω resistor through a copper wire, and the single-chamber membraneless microbial fuel cell is started. The voltage at both ends of the resistor is collected by the data collector and transmitted to the computer for automatic recording;

[0036] Step 2, dilute 500g of excess sludge with 1000g of nutrient solution, and each liter of nutrient solution is prepared by mixing phosphate solution, trace element solution, and vitamin B mixed solution in a mass ratio=1000:12:5, wherein the concentration of phosphate solution is It...

Embodiment 3

[0039] The specific operation steps of adopting the inventive method to process factory excess sludge are:

[0040] Step 1, the anaerobic sludge is placed in the microbial fuel cell reaction chamber as an inoculum, and the graphite electrode pretreated by the Fenton reagent is inserted, wherein the Fe of the Fenton reagent 2+ / H 2 o 2 The mass ratio is 1:5, the electrode plate spacing is 2cm, the electrode plate is connected to an external 1000Ω resistor through a tin wire, and the single-chamber membraneless microbial fuel cell is started. The voltage at both ends of the resistor is collected by the data collector and transmitted to the computer for automatic recording;

[0041] Step 2, dilute 500g of excess sludge with 1400g of nutrient solution, and each liter of nutrient solution is prepared by mixing phosphate solution, trace element solution, and vitamin B mixed solution at a mass ratio of 1000:12:5. Wherein the phosphate solution concentration is 80mol / L, and it conta...

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Abstract

The invention discloses a process for treating excess sludge in a factory with microwave and ultrasonic technology in cooperation with microbial fuel cell technology, which comprises the following steps: 1. Put anaerobic sludge as an inoculum in a microbial fuel cell reaction chamber, insert Fenton reagent for pretreatment The graphite electrode is connected to the external resistor through a wire to start the single-chamber membraneless microbial fuel cell; 2. After diluting the excess sludge with nutrient solution, the diluted excess sludge is pretreated by microwave and ultrasonic waves, and the remaining sludge after pretreatment is The sludge is placed in the microbial fuel cell reaction chamber, and at the same time, the pretreated residual sludge is continuously added to the electrode of the reaction chamber, so that a cycle is generated near the electrode to ensure continuous and stable electricity production. The process of the invention can reduce the content of organic matter such as SCOD and VS in the sludge without causing secondary pollution; can ensure continuous electricity production and stable current; recycle the discarded excess sludge and reduce sludge disposal costs.

Description

technical field [0001] The invention relates to a process for treating surplus sludge with microwave and ultrasonic technology in cooperation with microbial fuel cell technology, which belongs to the field of sludge treatment. [0002] technical background [0003] Nowadays, due to the increasingly stringent environmental protection requirements, the treatment rate of industrial wastewater in my country is high, followed by a sharp increase in the amount of sludge. If it is not properly treated, it will inevitably cause secondary pollution to the environment. The current treatment methods include landfill, incineration, agricultural use, and making building materials, etc. However, due to the reduction of available land area, the increase of sludge production, the pollution of the atmosphere by the release of toxic and harmful gases from incineration, and the increasingly stringent constraints of laws and regulations , the application of these methods is also limited. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/00C02F11/02H01M8/16H01M4/96
CPCH01M4/96H01M8/16C02F11/00C02F11/02Y02E60/50
Inventor 朱红祥艾矫燕李冬雪程梅笑王双飞何辉陈文博周士乐
Owner GUANGXI UNIV