Sludge dewatering and landfill integrated device for sewage treatment plant
A sewage treatment plant, sludge dehydration technology, applied in the direction of dehydration/drying/thickened sludge treatment, etc., can solve the problems of poor mechanical properties of sludge, high water content of sludge, large energy consumption, etc.
Inactive Publication Date: 2010-11-03
HUAQIAO UNIVERSITY
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Problems solved by technology
Sludge has a large water content, and it must be dehydrated before being disposed of by traditional methods. The operation of dehydration equipment consumes a lot of energy, and the economic cost is high.
In addition, at present, most of the sludge disposal in my country is landfill. Due to the poor mechanical properties of sludge, solidification treatment is required before landfill. Only when it reaches a certain strength can it meet the stability requirements of landfill. high cost
Method used
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[0020] The sewage treatment plant sludge dewatering and landfill integration device of the present invention, such as figure 1 , 2 As shown, it includes a sludge tank 1 with an opening at the top, an anti-seepage system 2, a horizontal infiltration system 3, a vertical infiltration system 4, an absorption evaporation system 5, a support system 6, a sealing system 7 and an exhaust system 8.
[0021] in:
[0022] The sludge pond 1 is excavated and formed on the original foundation soil, and the bottom of the pond is compacted;
[0023] The anti-seepage system 2 is composed of a clay layer 21 and a geomembrane 22. The clay layer 21 and the geomembrane 22 are successively laid on the bottom of the sludge tank 1; seepage of sewage into the underground environment;
[0024] The horizontal infiltration system 3 is made up of a sand cushion 31 and a geotextile 32. The sand cushion 31 and the geotextile 32 are successively laid on the geomembrane 22. The thickness of the sand cushio...
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Abstract
The invention discloses a sludge dewatering and landfill integrated device for a sewage treatment plant, comprising a sludge tank with a top opening, a seepage-proofing system, a horizontal infiltration system, a vertical infiltration system and an absorption and evaporation system, wherein the sludge tank provides a site for sludge dewatering and landfill, and the tank bottom thereof is successively paved with the seepage-proofing system and the horizontal infiltration system which is connected with a pumping and drainage system extending out of the sludge tank; the sludge tank is vertically provided with a vertical infiltration system the lower end of which is connected with the horizontal infiltration system so as to discharge moisture of the sludge into the horizontal infiltration system; and the absorption and evaporation system is arranged at the surface layer of the sludge in the sludge tank for absorbing and evaporating the moisture in the sludge. By adopting the device, sludge dewatering and solidifying cost can be greatly reduced, investment is saved, treatment scale is large and efficiency is high, and sludge reduction, bio-safety and reclamation can be realized.
Description
technical field [0001] The invention relates to sludge treatment equipment of a sewage treatment plant, in particular to an integrated treatment device for sludge dehydration and landfill. Background technique [0002] With the rapid development of my country's economic construction, sewage discharge and sludge production have increased dramatically. Sludge has a large water content, and it must be dehydrated before being disposed of by traditional methods. The operation of dehydration equipment consumes a lot of energy and the economic cost is high. In addition, at present, most of the sludge disposal in my country is landfill. Due to the poor mechanical properties of sludge, solidification treatment is required before landfilling. Only after reaching a certain strength can the stability of the landfill body be met. Solidification also requires more Higher cost. Contents of the invention [0003] The purpose of the present invention is to provide a novel, cost-effective ...
Claims
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IPC IPC(8): C02F11/12
Inventor 常方强涂帆
Owner HUAQIAO UNIVERSITY