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A mixed landfill method of dried sludge and domestic waste

A technology of domestic waste and dried sludge, which is applied in the field of sludge and domestic waste treatment, can solve problems such as easy landslide, low gas threshold, and reduced stability of the pile, and achieve easy diffusion and dilution, high threshold, Effects with a small area of ​​influence

Active Publication Date: 2016-01-06
SHANGHAI LAOGANG WASTE DISPOSAL CO LTD
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Problems solved by technology

[0002] Sludge has the characteristics of high moisture content and low strength. It has strong rheology when it is rolled by machinery in landfill operation, and there is a hidden danger of easy collapse. Therefore, the height of the landfill pile is limited.
In rainy days, the dried sludge is very easy to absorb water and regain moisture, resulting in a significant decrease in the stability of the pile and bringing difficulties to landfill operations
The domestic waste landfill has relatively safe and stable structural characteristics, but the odor generated during the landfill process mainly produces organic acids and hydrogen sulfide, the gas threshold is low, and the odor is more irritating to people than sludge filling Odor from the burial process

Method used

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  • A mixed landfill method of dried sludge and domestic waste

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Embodiment Construction

[0020] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0021] The landfill materials used in the mixed landfill method of dry sludge and domestic waste of the present invention include domestic waste and dried sludge. Waste effect, the steps include:

[0022] (1) The preparation of landfill materials is mainly to collect domestic garbage and sludge, and pretreat the collected sludge to obtain dried sludge. The pretreatment of sludge is to make the sludge The water content of the sludge is less than 50%, and the landfill effect of such dried sludge is better;

[0023] (2) For landfill operations, first erect several perforated pipes on the landfill site. These perforated pipes are connected to exhaust fans. The exhaust fan creates negative pressure in the perforated pipes to extract the odor from do...

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Abstract

The invention discloses a mixed embedding method of dried sludge and household garbage. Embedded materials include the household garbage and the dried sludge. The mixed embedding method comprises the following steps: embedding a layer of household garbage at a designated position, embedding a layer of dried sludge on the layer of household garbage, and embedding the household garbage and the dried sludge alternately to achieve a set embedding height; and embedding the dried sludge on the uppermost layer. The mixed embedding method has the beneficial effects that (1) in a sandwiched household garbage and sludge co-embedding mode, the sludge can be normally and safely embedded under the weather condition of light rain; (2) stink generated by coverage of the sludge on the scene is mainly from NH3 which is high in threshold value, easy to diffuse and dilute, and small in influence range; (3) the content of percolate organic matters is reduced to a certain extent and tends to be stable, and the chemical oxygen demand (COD) is 48,600mg / L.

Description

technical field [0001] The invention relates to a treatment method for sludge and household garbage, in particular to a mixed landfill method for dried sludge and household garbage. Background technique [0002] Sludge has the characteristics of high moisture content and low strength. It has strong rheological properties when it is rolled by machinery in landfill operations, and there is a hidden danger of easy landslides. Therefore, the height of the landfill pile is limited. In rainy days, the dried sludge is very easy to absorb water and regain moisture, which leads to a significant decrease in the stability of the pile and brings difficulties to the landfill operation. The domestic waste landfill has relatively safe and stable structural characteristics, but the odor generated during the landfill process mainly produces organic acids and hydrogen sulfide, the gas threshold is low, and the odor is more irritating to people than sludge filling Odor produced by the burial ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09B1/00C02F11/00
CPCY02W30/30
Inventor 周海燕张美兰张军徐勤唐佶赵由才黄仁华
Owner SHANGHAI LAOGANG WASTE DISPOSAL CO LTD
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