Sludge treatment method

A sludge treatment and sludge technology, applied in the field of sludge treatment, can solve the problems of long production cycle, large site occupation, large investment in equipment, etc., and achieve the effect of improving physical and chemical properties, increasing air permeability, and facilitating air permeability

Inactive Publication Date: 2017-06-13
莱阳天康肥料有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, the traditional drying methods are divided into two types: 1) Drying, which takes 3-4 months for one part, takes up a lot of space, and the production cycle is long, so it is not suitable for mass production; 2) Heating and drying requires a large investment in equipment. Consumption of electricity, coal, biogas and other energy
There are relatively obvious defects in these two drying processes. The present invention aims to overcome this defect and explore a new economical and practical method for sludge treatment.

Method used

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Examples

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Effect test

Embodiment 1

[0031] a. be that the walnut shell of 10 parts by weight is crushed, and the sludge that the water content of 20 parts by weight is 80% is treated by urban domestic water (material form is shown in the appendix figure 1 ) is thoroughly mixed;

[0032] b. Ferment the mixture obtained in step a once, with a height of 1.5 meters, a width of 1.5 to 3 meters, and a length set according to the actual situation of the production plant to establish a fermentation pile. When the temperature reaches 55°C, turn the pile once and turn it over Heap 7 times; and detect the temperature and moisture content of the material in real time, keep the fermentation pile above 55°C for about 160 hours, and terminate a fermentation (see the attached figure 2 );

[0033] c. Spread the material obtained in step b at room temperature for 2 days.

[0034] d. pulverize the fermented product obtained in step c, and condition it with a bottomless hammer crusher at a speed of more than 2000 revolutions per...

Embodiment 2

[0039] a. crushing 10 parts by weight of corn stalks, and fully mixing with 10 parts by weight of sludge treated with urban domestic water with a water content of 83%;

[0040] b. Ferment the mixture obtained in step a once, with a height of 1.5 meters, a width of 1.5 to 3 meters, and a length set according to the actual situation of the production plant to establish a fermentation pile. When the temperature reaches 60°C, turn the pile once and turn it over Heap 6 times; and detect the temperature and moisture content of the material in real time, keep the fermentation pile above 60°C for about 155 hours, and terminate the first fermentation;

[0041] c. Spread the material obtained in step b at room temperature for 1.5 days.

[0042] d. Fully pulverize and condition the fermented product obtained in step c, carry out with a bottomless hammer crusher at a speed of more than 2000 revolutions per minute, and then carry out secondary fermentation treatment. For the construction o...

Embodiment 3

[0047] a. Grinding 20 parts by weight of wheat straw, wheat bran, etc., and fully mixing with 10 parts by weight of sludge treated with urban domestic water with a water content of 85%;

[0048] b. Ferment the mixture obtained in step a once, with a height of 1.5 meters, a width of 1.5 to 3 meters, and a length set according to the actual situation of the production plant to build a fermentation pile. When the temperature reaches 65°C, turn the pile once and turn it over Heap 5 times; and detect the temperature and moisture content of the material in real time, keep the fermentation pile above 65°C for more than 150 hours, and terminate the first fermentation;

[0049] c. Spread the material obtained in step b at room temperature for 1.0 days;

[0050] d. Fully pulverize the fermented product obtained in step c, carry out with a bottomless hammer crusher at a speed of more than 2000 revolutions per minute, and then carry out secondary fermentation treatment. Refer to step b fo...

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Abstract

The invention discloses a sludge treatment method. The sludge treatment method includes: fermenting; crushing; fermenting for the second time; recycling a product of secondary fermentation to continue sludge treatment. A conventional drying process is adopted to replace primary fermentation, a fermentation plus drying process is replaced by secondary fermentation, and reproduction quantity of sludge treatment is increased through recycling, so that production period is shortened, equipment investment is small, energy sources are saved, and sludge treatment cost can be lowered substantially.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a sludge treatment method, which utilizes the technologies of fermentation, crushing, re-fermentation and return material treatment to process the sludge. Background technique [0002] From a global perspective, sludge treatment and disposal methods mainly include various forms such as landfill, incineration, ocean dumping, and land use. The landfill operation is relatively simple, the investment cost is small, the treatment cost is low, and the adaptability is strong. However, it encroaches heavily on the land. If the anti-seepage technology is not enough, it will lead to potential soil and groundwater pollution; the treatment method with incineration as the core is the most thorough treatment method, which can carbonize all organic matter and kill pathogens, which can minimize The volume of sludge, but its disadvantage is that the investment in treatment facilities is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/04
CPCC02F11/04Y02W10/20
Inventor 刘秀国李军海张震东
Owner 莱阳天康肥料有限责任公司
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