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Additives for eliminating activity of methane bacteria used in house refuse buried field

A technology for domestic waste and landfills, applied in the direction of biocides, plant growth regulators, chemicals for biological control, etc., can solve problems such as unsuitable for methanogen suppression, complicated operation, etc., to avoid the greenhouse effect, the effect Good, the effect of accelerating the degradation rate

Inactive Publication Date: 2009-06-24
TONGJI UNIV
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  • Application Information

AI Technical Summary

Problems solved by technology

In short, the anaerobic biological metabolic process is a process in which microorganisms transmit substances in series. To prevent the production of methane gas, the bacteria that produce methane must be suppressed. Therefore, some people conduct self-treatment based on the fact that methane bacteria cannot form spores in harsh environments. The characteristics of protection, using heating, pH control, microwave, ultraviolet and other methods to kill methane bacteria, but the operation is complicated, it is not suitable to use them to inhibit methane bacteria in domestic waste landfills

Method used

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  • Additives for eliminating activity of methane bacteria used in house refuse buried field
  • Additives for eliminating activity of methane bacteria used in house refuse buried field
  • Additives for eliminating activity of methane bacteria used in house refuse buried field

Examples

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Effect test

Embodiment 1

[0025] Please refer to the attached figure 1 , 2 and 3.

[0026] The components and contents of the additives of the present invention are verified through two-step experiments. The first step (initial experiment) is to test each component separately. The results show that LAS can effectively inhibit the activity of methane bacteria, enzymes can accelerate the hydrolysis of organic matter, and sodium metasilicate has the strongest ability to adjust the pH value of the system, but The best combination is determined by the following second-step experiment (the purpose of adding sludge to domestic waste is to accelerate methanation):

[0027] Weigh 5.0 g of crushed household garbage (dry weight) and 2.0 g (dry weight) of sludge, and put 7.0 g (dry weight) in total into a 250 mL serum bottle, then add distilled water to adjust the water content to 90%. In order to ensure that the reaction is carried out under anaerobic conditions, 7 parts of 7 kinds of additives containing diff...

Embodiment 2

[0033] Please refer to the attached figure 1 , 4 , 5 and 6.

[0034] Weigh a total of 7.0g of crushed domestic waste and sludge (dry weight, wherein, domestic waste: sludge = 55% to 100%: 0 to 45% by mass), put it into a 250mL serum bottle, and then add distilled water to adjust The water content is 90%, then add 0%, 2.50% ... 10% of 8 kinds of additives of the present invention with different weights of the total amount of domestic garbage and sludge, to ensure that the reaction is carried out under anaerobic conditions, after the feeding is finished, Flush into nitrogen for 30 seconds, drive out the air above the serum bottle (simulating the anaerobic state of domestic waste landfill), collect the gas by draining saturated saline, and measure the components and their contents in the gas by gas chromatography. In the initial stage of the reaction, a small amount of hydrogen gas was detected in the system. As the reaction progressed, the pH dropped sharply (about 5.0), and t...

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Abstract

An additive for suppressing the activity of methane bacteria in garbage burying field to prevent the generation of methane gas is prepared from the anionic surfactant LAS (46-50%), sodium metasilicate (49-52) and enzyme composition (1-2) consisting of alkaline proteinase 2709 and medium-temp amylase 7658.

Description

technical field [0001] An additive capable of inhibiting the activity of methane bacteria in domestic waste landfills relates to a mixture capable of preventing the generation of methane gas during the anaerobic digestion process of domestic waste, and belongs to the technical field of solid waste resource utilization and pollution prevention and control. Background technique [0002] Utilizing the characteristic that methanogenic bacteria cannot form spores and protect themselves in harsh environments, the process of anaerobic digestion of methane gas is prevented, and it is converted to liquid phase digestion, and then the liquid is processed and utilized in a centralized manner to avoid domestic garbage Methane gas produced during oxygen digestion is released into the environment, contributing to the greenhouse effect. The greenhouse effect is caused by the infrared rays reflected after the greenhouse effect gas is absorbed by the surface. The increase of human activities...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N63/00A01P1/00B09B3/00
Inventor 赵由才曹先艳牛冬杰柴晓利焦刚珍王星
Owner TONGJI UNIV
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