Sludge dewatering method and system based on microwave electrolytic catalytic oxidation

An electrolytic catalytic oxidation and sludge dehydration technology, applied in chemical instruments and methods, water/sludge/sewage treatment, sludge treatment, etc., can solve the problems of reducing the activation energy of the solution, weakening chemical bonds, etc., and achieve high strength and activation The effect of reducing and increasing the oxidation rate

Active Publication Date: 2021-01-22
湖南碳谷装备制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because in the process of chemical bond formation, some chemical bonds can be greatly weakened, thereby reducing the activation energy of the solution

Method used

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  • Sludge dewatering method and system based on microwave electrolytic catalytic oxidation
  • Sludge dewatering method and system based on microwave electrolytic catalytic oxidation

Examples

Experimental program
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Effect test

Embodiment 1

[0038] A method for dewatering sludge based on microwave electrolytic catalytic oxidation, comprising the following steps:

[0039] Step 1. Mud feeding into the mud storage tank: a mud feeding device is installed on the mud storage tank, and the water content of the mud feeding is controlled at 96%;

[0040] Step 2. Microwave catalytic oxidation pretreatment: Turn on the circulation pump, DC power supply, micro-nano bubbles, and microwave. The DC power supply voltage is 36V, the microwave frequency is 0.915Ghz, and the microwave power is 9kw. The generated hydroxyl radicals and the sludge in the sludge The organic matter is fully oxidized in the electrolytic cell. The anode material in the electrolytic cell is a carbon-carbon composite material, in which the base material is a mesophase pitch-based carbon fiber, the reinforcing phase is a highly conductive pitch impregnating agent, and the cathode material is made of stainless steel. The pump cycle The time is 30 minutes;

[...

Embodiment 2

[0045] A method for dewatering sludge based on microwave electrolytic catalytic oxidation, comprising the following steps:

[0046] Step 1. Mud feeding into the mud storage tank: a mud feeding device is installed on the mud storage tank, and the water content of the mud feeding is controlled at 99%;

[0047] Step 2. Microwave catalytic oxidation pretreatment: Turn on the circulation pump, DC power supply, micro-nano bubbles, and microwave. The DC power supply voltage is 24V, the microwave frequency is 2.45Ghz, and the microwave power is 30kw. The generated hydroxyl radicals and the sludge in the sludge The organic matter is fully oxidized in the electrolytic cell. The anode material in the electrolytic cell is a carbon-carbon composite material, in which the base material is a mesophase pitch-based carbon fiber, the reinforcing phase is a highly conductive pitch impregnating agent, and the cathode material is made of stainless steel. The pump cycle The time is 40 minutes;

[...

Embodiment 3

[0052] A method for dewatering sludge based on microwave electrolytic catalytic oxidation, comprising the following steps:

[0053] Step 1. Mud feeding into the mud storage tank: a mud feeding device is installed on the mud storage tank, and the water content of the mud feeding is controlled at 98%;

[0054] Step 2. Microwave catalytic oxidation pretreatment: Turn on the circulating pump, DC power supply, micro-nano bubbles, and microwave. The DC power supply voltage is 30V, the microwave frequency is 2.45Ghz, and the microwave power is 25kw. The generated hydroxyl radicals and the sludge in the sludge The organic matter is fully oxidized in the electrolytic cell. The anode material in the electrolytic cell is a carbon-carbon composite material, in which the base material is a mesophase pitch-based carbon fiber, the reinforcing phase is a highly conductive pitch impregnating agent, and the cathode material is made of stainless steel. The pump cycle The time is 60min;

[0055]...

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Abstract

The invention discloses a sludge dewatering method and system based on microwave electrolytic catalytic oxidation, which belong to the field of sludge treatment. The method comprise five steps of sludge feeding in a sludge storage tank, microwave catalytic oxidation pretreatment, high and low pressure sludge feeding, squeezing and discharging.In the method, mesophase pitch-based carbon fiber composite reinforced phase carbon source with high conductivity is used as an anode material, microwave electrolysis and micro-nano bubbles are adopted, so that the conductivity is increased, the oxidationrate of organic matters is increased, the water content of the sludge reaches 50% or below, and the low-energy-consumption and high-efficiency sludge dewatering method is realized.

Description

technical field [0001] The invention belongs to the field of sludge treatment, and in particular relates to a sludge dehydration method and system based on microwave electrolytic catalytic oxidation. Background technique [0002] Traditional biological treatment methods such as activated sludge method and biofilm method realize the efficient removal of organic matter through microbial biochemical reaction process, and at the same time discharge a large amount of excess sludge in order to maintain a stable biomass of the reaction system. In recent years, with the rapid development of the economy and the acceleration of urbanization, the sewage treatment facilities have become more and more perfect, the sewage discharge has increased sharply, and the sewage treatment plants have produced a large amount of excess sludge. [0003] Difficulties in sludge dewatering include: (1) Both EPS and colloids have high hydration and charged surface characteristics. They are suspended in wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/122C02F11/00C02F11/15
CPCC02F11/00C02F11/122C02F11/15
Inventor 王森然曾强
Owner 湖南碳谷装备制造有限公司
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