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Device and method for dewatering and drying mud under water

A drying and sludge technology, used in dewatering/drying/concentrating sludge treatment, etc., can solve the problems of inability to large-scale batch production, single form of mechanical dewatering equipment, and inability to discharge water directly, and achieve high-efficiency dehydration and drying treatment. , The effect of reducing the time required for natural drying and reducing the cost of dredging

Inactive Publication Date: 2014-11-19
中国船舶重工集团公司第七〇二研究所
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Problems solved by technology

[0003] Aiming at the shortcomings of the above-mentioned existing mechanical dehydration equipment used for drying underwater sludge, the effluent cannot be directly discharged, and cannot be produced in a large scale or in batches, the applicant provides a device and method for dehydrating and drying underwater sludge with reasonable technology and low consumption. Low energy, can carry out sludge drying treatment on a large scale and in batches

Method used

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  • Device and method for dewatering and drying mud under water
  • Device and method for dewatering and drying mud under water
  • Device and method for dewatering and drying mud under water

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Embodiment Construction

[0025] The specific implementation manner of the present invention will be described below in conjunction with the accompanying drawings.

[0026] Such as figure 1 As shown, the underwater sludge dehydration and drying device of the present invention includes a vibrating screen 100, a filter press 200, a purification tower 300 and a centrifuge 400 connected in series by a pipeline and a delivery pump, wherein the filter press 200, purification The input pipeline of the tower 300 and the centrifuge 400 is provided with a flocculant adding machine, and the outlet 407 of the centrifuge 400 is connected to the inlet of the purification tower 300 . refer to Image 6 , the underwater sludge dehydration and drying method of the present invention is mainly divided into four stages for sludge treatment.

[0027] The first stage: muddy sewage pretreatment. Vibrating screen 100 is selected as the pretreatment equipment for muddy sewage. In the dredging and dredging projects of rivers...

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Abstract

The invention relates to a device and a method for dewatering and drying mud under water. The device comprises a filter sieve, a filter press, a purification tower and a centrifugal machine, wherein the filter sieve is connected in series with a delivery pump through a pipeline; input pipelines of the filter press, the purification tower and the centrifugal machine are provided with flocculating agent adding machines; and a water outlet of the centrifugal machine is connected to an input port of the purification tower. A plurality of water treatment equipment are selected reasonably and a complete set of device is established based on the advantages of various equipment, so that the defect of low treatment efficiency of single equipment is overcome and dewatering and drying treatment can be efficiently performed on mud under water. The device and the method have the characteristics of reducing time needed by natural drying of a mud yard, improving mud treatment efficiency, greatly lowering dredging cost and meeting the requirement of mass, batched and engineered mud treatment, along with small floor area, low energy consumption, no blocking in continuous operation, high mud yield, good mobility, convenient arrangement on a mud treatment site and the like.

Description

technical field [0001] The invention relates to the field of environmental protection equipment, in particular to an underwater sludge dehydration and drying device and method. Background technique [0002] In recent years, the water quality of the lake has been polluted, the pollutants in the sediment sediment have accumulated seriously, and the content of nitrogen, phosphorus, and organic matter is relatively high, which provides the necessary nutrients for the outbreak of blue-green algae and lake flooding. Therefore, the removal of lake sediment Particularly important. The lake sediment has a large water content, and the use of sludge drying technology can greatly reduce the transportation pressure of subsequent treatment, improve the efficiency of dredging, and reduce the cost of dredging. At present, the sludge drying technology at home and abroad mainly adopts chemical solidification method or dehydration drying method. The processing object of the chemical solidifi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F11/14
Inventor 倪其军高扬睢爱国杨栋
Owner 中国船舶重工集团公司第七〇二研究所
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