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River mud treatment method

A technology of river silt and treatment method, applied in the field of water treatment, can solve the problem of large dosage of microbial inoculants, and achieve the effect of reducing dosage

Inactive Publication Date: 2017-09-15
博川环境修复(北京)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a big problem in this method, that is, the amount of microbial inoculum is relatively large, especially when there is a large amount of river silt, a large amount of microbial inoculum needs to be added

Method used

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  • River mud treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The microbial agent used in Example 1 and Example 2 is a microbial powder, which contains high-temperature bacteria, bacillus, saccharomyces and lactic acid bacteria, etc., and the concentration of bacteria in the powder is 10 9 cells / g~10 12 cells / g. The microbial agent used in Example 3 is a microbial solution, which contains high-temperature bacteria, bacillus, saccharomyces and lactic acid bacteria, etc., and the concentration of bacteria in this solution is 10 9 cells / mL~10 12 cells / mL.

[0041] Example 1

[0042] 1) Mix 1000L of untreated river silt with 2L of microbial powder and 30L of fallen garden leaves evenly, stack them on a platform with ventilation ducts at a height of 0.6m, and carry out aerobic fermentation. During the fermentation process, turn over once a day, After fermenting for 5 days, obtain the decomposed river mud for composting;

[0043] 2) First mix 10L of the above-mentioned compost with decomposed river silt, 10L of microbial powder, an...

Embodiment 2

[0049] 1), get the decomposed river silt after composting in 2000L embodiment 1, this silt is used as the decomposed river silt for composting in embodiment 2;

[0050] 2), 6000L of a certain river silt to be treated with a water content of 65% and 100L of the above-mentioned compost with decomposed river silt, 50L of microbial powder, and 750L of fallen garden leaves were mixed uniformly to obtain a mixture;

[0051] 3) Stack the above mixture in the natural drying yard, the shape of the pile is conical, and the height of the pile is 1.5m. Carry out aerobic fermentation. At the beginning, the temperature of the mixture continues to rise. After 4 hours of fermentation, the temperature rises to about 62°C. Then after continuing for 1 hour in this temperature range, the temperature began to drop. At this time, use a turning machine to turn the mixture. During the subsequent fermentation process, the temperature of the mixture repeats the above rule. Whenever the temperature of th...

Embodiment 3

[0056] 1) Mix 2000L of untreated river sludge with 40L of microbial solution and 300L of rice bran evenly, and stack them on a platform with ventilation ducts at a height of 0.8m for aerobic fermentation. Turn over and throw when beginning to descend, and after 15 days of fermentation, obtain decomposed river silt for composting;

[0057] 2), first mix 700L of decomposed river silt for composting, 200L of microbial solution, and 10500L of rice bran, add 80000L of a certain river silt to be treated with a moisture content of 70%, and mix to obtain a mixture;

[0058] 3) Stack the above mixture on a platform with ventilation ducts at a stacking height of 1.2m for aerobic fermentation. During the fermentation process, when the temperature of the fermented product starts to drop, turn it over and toss it. After 15 days of fermentation, it will be composted and decomposed River silt.

[0059] After composting, the decomposed river silt has a tan appearance, uniform particle distri...

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Abstract

The embodiment of the invention provides a river mud treatment method which comprises the following steps: (1) obtaining rotted river mud for composting; (2) uniformly mixing river mud to be treated, the rotted river mud for composting, a microbial agent and a carrier material, thus obtaining a mixture, wherein a ratio of the volume sum of the rotted river mud for composting, the microbial agent and the carrier material to the volume of the river mud to be treated is (0.06 to 0.15): 1, and the volume ratio of the rotted river mud for composting to the microbial agent to the carrier material is (1 to 3): (0.05 to 1): (15 to 30); and (3) stacking the mixture at a ventilating place for aerobic fermentation, turning the mixture in a fermentation process, and after fermentation is performed for 5 to 15 days, obtaining composted rotten river mud. According to the method provided by the embodiment of the invention, the use amount of the microbial agent in a river mud composting process can be reduced.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a method for treating river sludge. Background technique [0002] The problem of river pollution in my country has become increasingly prominent, which has seriously affected the ecological environment and residents' lives. In polluted rivers, not only the water quality is seriously polluted, but also the silt deposited at the bottom of the river has a high content of pollutants. If the silt is not treated, the pollutants in the silt will be released into the water body of the river, causing secondary pollution, so The silt in these channels needs to be treated. [0003] Currently, river silt is mainly disposed of through dewatering landfill and land use methods. Among them, the land use method, that is, the composting method, is considered to be a disposal method with the most development potential because of the advantages of low investment, low energy consumption, lo...

Claims

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Application Information

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IPC IPC(8): C05F15/00C02F11/02
CPCC02F11/02C05F5/002C05F7/00C05F11/00C05F11/08C05F17/50C05F17/70Y02W10/20
Inventor 王明珠张伦梁仲惠川刘照军冯晓旭
Owner 博川环境修复(北京)有限公司
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