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Sludge dewatering device

A sludge dehydration and dehydration device technology, which is applied in the direction of dehydration/drying/concentrated sludge treatment, etc., can solve the problems of short cathode life, low dehydration efficiency of dehydration device, and small water passing area, so as to achieve high dehydration rate and improve dehydration Efficiency, the effect of ensuring the water passing area

Inactive Publication Date: 2011-03-30
SOUND GLOBAL
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  • Claims
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AI Technical Summary

Problems solved by technology

[0012] Based on the problems existing in the above-mentioned prior art, the embodiment of the present invention provides a sludge dewatering device, which can solve the problems of the existing electroosmotic dehydration device, such as short cathode life and small water passing area, resulting in low dehydration efficiency of the dehydration device

Method used

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Embodiment

[0027] An embodiment of the present invention provides a sludge dewatering device for dehydrating sludge, such as figure 1 , 2 As shown, the dehydration device includes:

[0028] Frame, anode roller 7, cathode filter screen 2, guide roller 11 and driving roller 4; wherein, the anode roller 7 is a metal roller, arranged in the frame, and electrically connected to the positive pole of the power supply; the metal surface of the anode roller 7 can be covered with special The metal coating can adopt the formula coating containing iridium sintered on the surface of the titanium plate at high temperature. This special metal coating can realize the electric corrosion protection of the surface of the anode drum. Compared with the sacrificial anode protection technology, this technology makes the anode The dimensional stability of the drum is good, and the utilization rate of electric energy is higher;

[0029] The cathode filter screen 2 is a non-metal spiral net, and a plurality of ...

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Abstract

The embodiment of the invention provides a sludge dewatering device, belonging to the field of sludge processing equipment. The sludge dewatering device comprises a stand, an anode roller, a cathode filter screen, a guide roll and a drive roll. The anode roller is a metal roller, is arranged in the stand, and is electrically connected with an anode of a power supply. The cathode filter screen is a non-metal spiral screen, a plurality of metal wires pass through a spiral cylinder of the non-metal spiral screen to be used as conductive bodies, each metal wire crosswise passes through the non-metal spiral screen, both ends of each metal wire extend outside the non-metal spiral screen, and each metal wire is electrically connected with a cathode of the power supply. The drive roll and the guide roll are arranged on the stand, the cathode filter screen is arranged on the drive roll and the guide roll and driven by the drive roll, and a part of the cathode filter screen surrounds the outside of the anode roller and forms a gap extruding sludge with the anode roller. The flow area of the cathode of the sludge dewatering device is large, the dewatering efficiency is improved, and the service life of the cathode filter screen is prolonged.

Description

technical field [0001] The invention relates to the technical field of dewatering treatment, in particular to a sludge dewatering device. Background technique [0002] With the development of social economy and urbanization, the output and quantity of urban sewage are constantly increasing. According to incomplete statistics, the national sewage discharge in 2006 was about 53.7 billion tons. With the improvement of sewage treatment rate, China's urban sewage treatment volume will have a greater growth in the next 20 years, accompanied by a large amount of surplus sludge. It is estimated that the output of urban dry sludge in China will eventually reach about 8.4 million tons per year (equivalent to 42 million tons of wet sludge with a moisture content of 80%), accounting for 3.2% of the total solid waste discharge in the country, and the annual growth rate is greater than 10%. . [0003] The composition of sludge is very complex. It is an aggregate composed of bacterial m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/12
Inventor 文一波王凯李力张锡铎申欢李庆红
Owner SOUND GLOBAL
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