Municipal sewage sludge treatment method and its product

A technology for municipal domestic sludge and treatment methods, applied in the field of sludge treatment, can solve problems affecting the normal operation of landfills, and achieve the effect of resource utilization and high removal efficiency

Inactive Publication Date: 2012-06-27
徐瑞金
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If it is buried in a sanitary landfill, it will seriously affect the normal operation of the landfill

Method used

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  • Municipal sewage sludge treatment method and its product
  • Municipal sewage sludge treatment method and its product
  • Municipal sewage sludge treatment method and its product

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The municipal domestic sludge treated by Yiwu Water Treatment Center as shown in Table 1 was used.

[0051] A treatment method for municipal domestic sludge, carried out according to the following steps:

[0052] (1) Add microbial strains (Bivoform microbial strains in the United States, model: BZT (Waste Digester), the same below) and straw (to increase air permeability) to municipal domestic sludge for fermentation treatment, wherein: the microorganisms The amount of bacteria added is 25% of the weight of municipal domestic sludge, the amount of rice straw added is 5% of the weight of municipal domestic sludge, the fermentation treatment temperature is 20-30°C, and the fermentation treatment is 4 hours;

[0053] (2) Add Daping No. 1 earthworms to the municipal domestic sludge after fermentation treatment, wherein: the addition amount of Daping No. 1 earthworms is 1% of the weight of municipal domestic sludge, and the temperature during treatment is 25 °C and the humid...

Embodiment 2

[0057] The municipal domestic sludge treated by Yiwu Water Treatment Center as shown in Table 1 was used.

[0058] A treatment method for municipal domestic sludge, carried out according to the following steps:

[0059] (1) Add microbial strains and rice bran (increase air permeability) to municipal domestic sludge for fermentation treatment, wherein: the added amount of microbial strains is 20% of the weight of municipal domestic sludge, and the added amount of rice bran It is 1% of the weight of municipal domestic sludge, and it is covered with a film at the same time. The fermentation treatment temperature is 10-20 ° C, and the fermentation treatment is 8 hours;

[0060] (2) Add Daping No. 1 earthworms to the municipal domestic sludge after fermentation treatment, wherein: the addition amount of Daping No. 1 earthworms is 0.8% of the weight of municipal domestic sludge, and the temperature during treatment is 20 °C and the humidity is 65 %, the processing time is 4 months....

Embodiment 3

[0064]The municipal domestic sludge treated by Yiwu Water Treatment Center as shown in Table 1 was used.

[0065] A treatment method for municipal domestic sludge, carried out according to the following steps:

[0066] (1) Add microbial strains and corn stalks (increasing air permeability) to municipal domestic sludge for fermentation treatment, wherein: the added amount of microbial strains is 10% of the weight of municipal domestic sludge, and the added amount of corn stalks It is 3% of the weight of urban domestic sludge. At the same time, cover the sunshade net or straw and spray water twice in the morning and evening (spraying water is prohibited from 11:00 noon to 7:00 pm). The fermentation treatment temperature is 30-40 ° C, and the fermentation treatment is 3 hours;

[0067] (2) Add Daping No. 1 earthworms to the municipal domestic sludge after fermentation treatment, wherein: the addition amount of Daping No. 1 earthworms is 0.5% of the weight of municipal domestic sl...

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Abstract

The invention belongs to the field of sewage sludge treatment and specifically relates to a municipal sewage sludge treatment method. The method comprises the following steps of: (1) fermenting by adding microbial strains into municipal sewage sludge; and (2) adding earthworm Daping 1 into the fermented municipal sewage sludge. The invention also provides a product obtained by the above municipal sewage sludge treatment method. According to the municipal sewage sludge treatment method provided by the invention, on one hand, municipal sewage sludge is greatly treated by the microbial earthworm biological technology; on the other hand, by the use of municipal sewage sludge to breed earthworm, earthworm manure can be used as an organic fertilizer in forestry and agriculture, and earthworm and earthworm manure can be used as the protein forage source for livestock and poultry so as to replace fish meal.

Description

Technical field [0001] The present invention is a sludge treatment field, which involves a method of treatment and products that use biotechnology to use biotechnology for urban life sludge. Background technique [0002] Life sludge is a regular product of the sewage treatment plant. The treatment of sludge has always been one of the important issues facing municipal management.At present, there is no mature technology in China to deal with sludge, mainly discharge or landfill at will.Because the sludge contains toxic and harmful substances, this may once again cause pollution, and may even enter the human body through the food chain, thereby endangering the public's health.Life sludge contains a large amount of organic matter, nitrogen, phosphorus, and potassium, which is a good fertilizer. However, because it contains harmful substances, its resource utilization is limited. According to the experience of traditional agriculture, the sludge can be applied to the land to improve ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/02C05F3/00A01K67/033A23K1/10A23K1/00
CPCY02A40/20
Inventor 徐瑞金
Owner 徐瑞金
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