Electro-osmotic sludge dewatering system

Abstract

An electroosmosis sludge dewatering treating system comprises a pre-precipitation unit, an electroosmosis treating unit, a sewage draining unit and a detection control unit.The pre-precipitation unit comprises a sludge feeding pipe, a plurality of sludge pre-precipitation pond, a sludge charging pump, a charging electric valve, a sludge charging pipe and a liquid level sensor.The electroosmosis treating unit comprises an electroosmosis treating pond, a corrosion-resisting electrode and a liquid level sensor.The sewage draining unit comprises a drainage pipe net, a drainage pipeline, a sewage flowmeter and a sewage well which are arranged at the bottom of an electroosmosis treating pond.The detection control unit comprises an automatic power control cabinet and a computer system which achieves communication with the liquid level sensors, the sewage flowmeter and a current signal collector.The treating system is simple in structure, low in energy consumption, easy and convenient to operate, large in treatment capacity and good in treatment effect.

Description

technical field [0001] The invention relates to a sludge dewatering treatment system, more particularly to an in-situ factory electroosmotic sludge dewatering treatment system. Background technique [0002] According to the "Twelfth Five-Year Plan" National Urban Sewage Treatment and Recycling Facilities Construction Plan, the current sewage treatment capacity in my country is 1.2476×10 8 t / d, will grow to 1.7045×10 by 2015 8 t / d, and the average operating load rate of the national sewage treatment equipment is about 84%. It is estimated that by the end of 2015, the annual output of dewatered sludge in my country will exceed 2.6×10 7 t. 25% to 65% of the investment and operating costs of the entire sewage plant are used for sludge treatment and disposal, which has become a heavy burden for the sewage treatment plant. At the same time, it has also brought enormous pressure to the increasingly severe ecological environment. How to dispose of sludge from sewage plants to f...

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Problems solved by technology

However, this method requires a large amount of chemicals, which reduces the combustion value of the dry mud and increases the secondary pollution of the environment.

[0007] 3. Heat treatment method: use the waste heat of the power plant to dry your sludge, which has high energy consumption, complicated equipment and process, and produces a large amount of gas pollution.

In terms of the operation of existing devices: the existing electro-osmotic sludge dewatering devices generally require more manual assistance, and at the same time, vacuum pumps are required for actual operation and treatment, resulting in high energy consumption for drainage and low efficiency.

In terms of maintenance of existing equipment: the existing electroosmotic sludge dewatering equipment has high maintenance frequency, frequent replacement of spare parts, difficult use, and high overall cost

In terms of the processing capacity of existing devices: the existing electro-osmotic sludge dewatering devices generally use small devices for processing, and the processing capacity is small

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