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Integrated treatment method for sludge cleaning and mud dewatering and drying

A treatment method and sludge dewatering technology, applied in water/sludge/sewage treatment, sludge treatment, dehydration/drying/concentrated sludge treatment, etc. The problems of high mud moisture content and low water resource utilization rate can achieve the effect of resource treatment, improving sediment removal rate and easy operation.

Inactive Publication Date: 2019-03-05
浙江省围海建设集团股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the siltation of small and medium-sized rivers, lakes, and reservoirs in my country is serious, and the accumulation of pollutants weakens the original ability of flood control and storage, flood control and disaster reduction, and reduces the utilization rate of water resources; untreated or untreated industrial wastewater and domestic sewage And agricultural sewage is discharged into rivers, lakes and reservoirs, polluting water bodies and sediments; a large amount of harmful sludge derived from sewage treatment has the crux of high water content, large volume, and difficulty in digestion

Method used

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  • Integrated treatment method for sludge cleaning and mud dewatering and drying
  • Integrated treatment method for sludge cleaning and mud dewatering and drying

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Embodiment 1

[0025] see figure 1 and figure 2 As shown, they are respectively a flow chart and a schematic structural diagram of the dredged sludge dehydration and drying integrated treatment method of the present invention.

[0026] combine figure 1 and figure 2 Shown, a kind of dredging sludge dehydration drying integrated treatment method, it comprises the following steps:

[0027] In step a, the dredging operation is carried out in an environment-friendly dredging method to generate mud;

[0028] Environmental protection dredging refers to the dredging project aimed at improving water quality. During the dredging process, the impact on the water body environment can be avoided as much as possible. The environmental protection dredging method is selected according to the dredging task, geological terrain conditions and construction environment. The dredging process and the dredging equipment 1 carry out dredging operations. The dredging equipment 1 should have high positioning acc...

Embodiment 2

[0053] As described above, a dredged sludge dehydration and drying integrated treatment method, the difference of this embodiment is that, as figure 2 As shown, the number of fully enclosed delivery pipelines in the step b is at least two, and a booster pump 3 is used to connect between every two described fully enclosed delivery pipelines. The distance selection of the mud dump, as the quantity of the fully enclosed conveying pipeline adopted in the present embodiment, is two, that is, the fully enclosed conveying pipeline 21 and the fully enclosed conveying pipeline 22, and the inlet end of the booster pump 3 is connected to the fully enclosed conveying pipeline. The outlet of the pipeline 21, the outlet end is connected to the inlet end of the fully enclosed delivery pipeline 22, and the mud is conveyed by booster pump 3 and multi-stage relay transportation during transportation, which overcomes the limitation of the distance of the mud dump and the topographical conditions...

Embodiment 3

[0055] The above-mentioned integrated treatment method for dredging sludge dehydration and drying, the difference between this embodiment and the first embodiment is that the screening in step c is realized by a trommel screen, and the end of the fully enclosed conveying pipeline Connect the inlet of the drum sieve, after the mud enters the drum sieve, the mud flows down from the screen hole, and flows to the homogenization stabilization tank 5 through the reverse flow channel of the drum sieve, and the garbage in the mud is under the action of the centrifugal force of the drum sieve rotation. down and out from the waste outlet.

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Abstract

The invention provides an integrated treatment method for sludge cleaning and mud dewatering and drying. The method comprises the steps: cleaning sludge in an environment-friendly mode, conveying thesludge in an environment-friendly closed mode, screening garbage, homogenizing and stabilizing the sludge, monitoring the concentration and flow of the sludge, controlling the addition amount of a flocculant, mixing the flocculant with the sludge, monitoring the flocculation condition of the sludge, controlling the addition amount of a conditioning reagent, mixing the conditioning reagent with theflocculated sludge, introducing the flocculated and conditioned sludge into a precipitation tower so as to realize isolation of mud and water and complete mud sedimentation and discharge and recycling of tail water, and introducing the precipitated mud into a filter press for pressure filtration so as to obtain dried mud and achieve discharge and recycling of filter pressing water. The method hasthe advantages that through the treatment method, the garbage, mud and water in the sludge can be isolated, mud drying and water recycling are achieved, and reduction, stabilization, harmlessness andresource treatment of the sludge are achieved.

Description

technical field [0001] The invention relates to the technical field of river channel dredging, in particular to an integrated dehydration and drying treatment method for dredging sludge. Background technique [0002] At present, the siltation of small and medium-sized rivers, lakes, and reservoirs in my country is serious, and the accumulation of pollutants weakens the original ability of flood control and storage, flood control and disaster reduction, and reduces the utilization rate of water resources; untreated or untreated industrial wastewater and domestic sewage And agricultural sewage is discharged into rivers, lakes and reservoirs, polluting water bodies and sediments; a large amount of harmful sludge derived from sewage treatment has the crux of high water content, large volume, and difficulty in digestion. [0003] In view of the above-mentioned defects, the creator of the present invention has finally obtained the present invention through long-term research and pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14C02F11/12C02F11/00C02F11/122
CPCC02F11/00C02F11/121C02F11/122C02F11/14C02F2303/06
Inventor 俞元洪曹俊杰谢士猛姜欢悦王杰
Owner 浙江省围海建设集团股份有限公司