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Mud granulizing method, mud granule produced thereby and application thereof

A technology of sludge granulation and sludge, which is applied in water/sludge/sewage treatment, method of granulating raw materials, sludge treatment, etc. Treatment and sludge treatment troubles the sewage treatment industry and the working environment is harsh, so as to facilitate storage, improve efficiency, and improve the working environment.

Inactive Publication Date: 2009-08-26
BEIJING SIFANGRUGANG CONCRETE PROD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Dumping and burying sludge requires a huge space. The foul-smelling gas produced by the sludge seriously pollutes the atmosphere, and the working environment is extremely harsh. Moreover, the sludge contains a variety of heavy metals and toxic and harmful substances, which seep into the ground and seriously pollute the groundwater; dry naturally Post-incineration also pollutes the atmosphere and the working environment, so these sludge treatment methods run counter to the increasing environmental protection requirements, and do not meet the requirements of solid waste recycling, reduction, and harmless treatment, and have been gradually banned by the environmental protection department
In this way, sludge treatment has become a problem that plagues the sewage treatment industry

Method used

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  • Mud granulizing method, mud granule produced thereby and application thereof

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Effect test

Embodiment 1

[0030] As shown in the figure, the sludge is continuously transported from the sludge outlet or the sludge storage tank of the sewage treatment plant to the mud agitator 2 by using the sludge conveying equipment 1. According to the conveying speed of the sludge, the lime adder is used respectively 5. Cement adder 6, water pump 7, and fly ash adder 8 continuously add quicklime powder, cement, water and fly ash to the mud mixer 2; Mud and quicklime are fully mixed and chemically reacted to form slaked lime, which is mixed with other materials; the mixed material is continuously conveyed to the screw conveyor 3, and the additive adder located at the entrance of the screw conveyor 3 is used according to the transmission speed of the mixed material 9. The coagulant additive 11 and the gelling agent additive 13 add an appropriate amount of water-repellent additives, coagulants and gelling agents, and further mix under the rotation and advancement of the screw conveyor 3; the further ...

Embodiment 2

[0034]As shown in the figure, the sludge is continuously transported from the sludge outlet or the sludge storage tank of the sewage treatment plant to the mud agitator 2 by using the sludge conveying equipment 1. According to the conveying speed of the sludge, the lime adder is used respectively 5. The water pump 7 and the fly ash adder 8 continuously add quicklime powder, water and fly ash to the mud mixer 2; under the action of continuous stirring, the sludge and quicklime in the mud mixer 2 are fully mixed and generated The chemical reaction forms slaked lime and mixes it with other materials; the mixed material is filtered through the filter screen 12, and is continuously transported to the screw conveyor 3. According to the conveying speed of the mixed material, the carbon powder arranged at the entrance of the screw conveyor 3 Or the sawdust adder 10 adds an appropriate amount of carbon powder or sawdust, and further mixes under the rotation and advancement of the screw ...

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Abstract

The invention discloses a mud granulizing method, mud granules produced by the method and application of the mud granules. The method comprises the following steps: mixing mud and quicklime evenly, granulizing with a granulator to form mud granules, adding moderate amount of cement to enhance the strength of the mud granules which can be used as building filters, and adding moderate amount of carbon powder or sawdust to improve the combustibility of the mud granules which can be used as fuel. The mud granulizing method of the invention can be directly combined with the sewage disposal process, and mud is taken as raw material to produce mud granules with multiple uses to ensure that the mud produced by mud disposal can be recycled, thus resolving the mud disposal problem of the sewage disposal industry. The method can realize continuous and automatic work, avoid manual work directing at mud, and improve work environment.

Description

technical field [0001] The invention relates to a method for recycling solid waste, in particular, the invention relates to a treatment method for sewage treatment tailings and its application. Background technique [0002] Sewage treatment is the process of concentrating impurities in sewage into a semi-solid form and then separating them from the fluid. The separated tailings are in the form of paste concentrates, commonly known as sludge. At present, most sewage treatment plants do not further treat the sludge, but directly dump the paste sludge, landfill it, or incinerate it after natural drying; some sewage treatment plants also dehydrate the sludge through backlog dehydration, and form a soft sludge after backlog dehydration. The cake-like sludge should be dumped, buried or naturally dried and then incinerated. Dumping and burying sludge requires a huge space. The foul-smelling gas produced by the sludge seriously pollutes the atmosphere, and the working environment i...

Claims

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Application Information

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IPC IPC(8): C02F11/00B01J2/00B09B3/00
CPCY02W30/78
Inventor 梁林华李丽兰
Owner BEIJING SIFANGRUGANG CONCRETE PROD
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