Municipal sewage sand removing device and method

A technology of urban sewage and water chambers, applied in separation methods, chemical instruments and methods, dehydration/drying/thickened sludge treatment, etc., can solve the problems of incomplete treatment, large floor area, lengthy process, etc., and achieve sand removal Excellent effect, reduced floor space and improved environment

Inactive Publication Date: 2016-08-24
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] The traditional aerated grit chamber has the disadvantages of low efficiency, high cost, large floor area, incomplete treatment, and lengthy process. In view of this, the research on the microfiltrati

Method used

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  • Municipal sewage sand removing device and method

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Embodiment 1

[0020] The equipment of the present invention is specifically shown in figure 1 , the specific operation steps have been described in detail in the content of the invention, and will not be repeated here. The pre-filter is mainly divided into three parts: the pre-filtration water chamber, the filtered water chamber and the mud sand chamber. Raw water enters the pre-filter water chamber from the water inlet, enters the after-filter water chamber after being filtered by the filter cloth, and finally the sewage is discharged to the drainage channel through the water outlet. The rotating filter cloth scrapes the filtered mud and sand to the mud sand chamber through the brush, and then squeezes the dewatering parts through the filtered matter for dehydration, and finally discharges the mud and sand from the pre-filter.

[0021] The present invention has been tested and researched in a sewage plant in Beijing. The operating conditions: the length, width and height of the equipment ...

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Abstract

The invention relates to a municipal sewage sand removing device and method, in particular to a multifunctional belt type pre-filter, and belongs to the technical field of primary treatment on sewage. The multifunctional belt type pre-filter internally comprises inclined filter cloth (12), a first driving wheel (10) and a second driving wheel (9) are adopted at the upper end of the filter cloth (12), a driven wheel (3) is adopted at the lower end so that an inclined filter cloth conveying belt structure can be formed by the filter cloth, and a sand extrusion dewatering device (7) is installed in a sand storage chamber (14). Sand removing and dewatering effects are enhanced, and sand filtered out through the filter cloth rotates along with the filter cloth, is swept by brushes into the sand storage chamber and is extruded to a sand outlet through a sand collecting component to complete sand removing and dewatering.

Description

technical field [0001] The invention relates to a multifunctional belt prefilter, which is used to strengthen the primary treatment of urban sewage. It belongs to the technical field of sewage treatment. Background technique [0002] With the rapid development of urban construction in our country, urban sewage treatment plants have become an indispensable part of urban construction. However, most of the primary treatment of sewage plants in operation in my country now follow the traditional typical process. Grids, fine screens, grit chambers and primary sedimentation tanks. However, the traditional primary treatment has many disadvantages such as too complicated process, many structures, large floor area, high energy consumption, and low treatment efficiency. These deficiencies do not conform to the environmental protection concept of energy saving and emission reduction advocated now. In addition, in the water treatment process, the sand production in the primary sedimenta...

Claims

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Application Information

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IPC IPC(8): B01D33/04C02F11/12
CPCB01D33/04C02F11/12
Inventor 李军岳耀冬翟杰一王盟卞伟邓海亮
Owner BEIJING UNIV OF TECH
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