Method for treating cattle manure fermented digested effluent by microwave/hydrogen peroxide

A technology of hydrogen peroxide and microwave catalytic oxidation, which is applied in the fields of oxidized water/sewage treatment, light water/sewage treatment, animal husbandry wastewater treatment, etc. , High processing efficiency, the effect of reducing processing load

Active Publication Date: 2019-05-03
黑龙江翰恒环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem that the existing cow dung biogas slurry has a large amo...

Method used

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  • Method for treating cattle manure fermented digested effluent by microwave/hydrogen peroxide
  • Method for treating cattle manure fermented digested effluent by microwave/hydrogen peroxide
  • Method for treating cattle manure fermented digested effluent by microwave/hydrogen peroxide

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specific Embodiment approach 1

[0025] Specific embodiment one: a kind of method of microwave / hydrogen peroxide treatment cow dung fermented biogas liquor in this embodiment, specifically carry out according to the following steps:

[0026] 1. Preheating stage: the biogas slurry is preheated to 40-50°C through a microwave reactor;

[0027] 2. Microwave / hydrogen peroxide treatment: use inorganic acid to adjust the pH of the biogas slurry treated in step 1 to 3, and then add H 2 o 2 , placed under microwave conditions, stirring at the same time, keeping for 4-5 minutes, turning off the microwave source, taking it out, and standing it at room temperature for 1-1.5 hours, and completing the method of microwave / hydrogen peroxide treatment of cow dung fermentation biogas slurry.

specific Embodiment approach 2

[0028]Embodiment 2: The difference between this embodiment and Embodiment 1 is that the power of the microwave reactor in Step 1 is 300W. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0029] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: in step two, the inorganic acid is concentrated sulfuric acid with a mass concentration of 98%. Others are the same as in the first or second embodiment.

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Abstract

The invention discloses a method for treating cattle manure fermented digested effluent by microwave/hydrogen peroxide and relates to the field of microwave/hydrogen peroxide process pretreatment of the cattle manure fermented digested effluent. The method is used for solving the technical problem that the existing cattle manure digested effluent is large in volume and difficult in treatment. Themethod comprises the steps: (1) preheating the digested effluent through a microwave reactor; and (2) carrying out microwave/hydrogen peroxide treatment. According to the method, the operation is simple, the energy consumption is lowered, the oxidation time is shortened, the cost is reduced, and the load of subsequent treatment is reduced. The method is used for improving settleability of digestedeffluent solid particles and lowering pollutant concentration of supernatant, and thus, the load of subsequent treatment of the supernatant is reduced.

Description

technical field [0001] The invention relates to the field of microwave / hydrogen peroxide process pretreatment of cow dung fermentation biogas liquor. Background technique [0002] Biogas engineering is used as livestock and poultry manure treatment, and the energy recovery and utilization technology has been developed rapidly in recent years. The biogas slurry produced by anaerobic fermentation meets the application conditions, and the best way to dispose of it is field fertilization. However, there is not enough land around the biogas projects of most farms for consumption, and some biogas slurry has excessive heavy metals, and direct agricultural use will cause serious environmental problems. At the same time, the foul odor released by biogas slurry may include inorganic substances such as hydrogen sulfide and a large number of extremely complex volatile odorous organic compounds. Some substances have carcinogenic effects, which increases the difficulty in the treatment o...

Claims

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Application Information

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IPC IPC(8): C02F1/30C02F1/72C02F103/20
Inventor 高大文张明慧
Owner 黑龙江翰恒环保科技有限公司
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