Electrolytic squeezing device applied to dehydrator or deoiling machine

Abstract

The invention discloses an electrolytic squeezing device applied to a dehydrator or a deoiling machine. A mechanical squeezing mode and a direct current electrolysis mode are simultaneously used in the device through charging direct current into a filter-pressing plate, so that water and oil in sludge are filtered in an accelerated way. Through mounting an anode metal plate connected with a direct current power supply anode on an upper press plate, mounting a cathode metal plate connected with a direct current power supply cathode on a lower press plate and mounting a nonmetal filter cloth with a conveying effect on the lower press plate, the voltage and the current output by a direct current power supply are automatically adjusted by using an electronic technology so as to ensure that liquid electrophoresis phenomenon generated by direct current is normal; therefore, dehydration and deoiling of internal mediums of the two press plates are accelerated to separate water or oil in the sludge, so that the filter-pressing efficiency is increased. The electrolytic squeezing device applied to the dehydrator or the deoiling machine, disclosed by the invention, is suitable for deposited sludge of industrial or domestic sewage, in particular to oil contained industrial sludges, and can effectively separate out oil which cannot be separated by other equipments.

Description

technical field [0001] The invention belongs to an environmental protection equipment, more precisely, the invention relates to an electrolytic pressing device applied to a dehydrator or a deoiler. Background technique [0002] With the strengthening of environmental protection awareness, there are more and more various sewage or sewage treatment projects. If the sludge brought after treatment cannot be fully dehydrated or deoiled, it will offset part of the environmental treatment results. Existing commercialized sludge dewatering equipment, such as plate and frame filter press dewatering, centrifugal dewatering, belt filter press dewatering and screw press dewatering equipment, can only discharge interstitial water and free water in sludge due to the principle of the equipment , the water content of the sludge cake is still above 80%; while the dehydration equipment using heating and drying technology can effectively dry the sludge cake, but due to the high heating cost, t...

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Problems solved by technology

[0002] With the strengthening of environmental protection awareness, there are more and more various sewage or sewage treatment projects. If the sludge brought after treatment cannot be fully dehydrated or deoiled, it will offset part of the environmental treatment results.

Existing commercialized sludge dewatering equipment, such as plate and frame filter press dewatering, centrifugal dewatering, belt filter press dewatering and screw press dewatering equipment, can only discharge interstitial water and free water in sludge due to the principle of the equipment , the water content of the sludge cake is still above 80%; while the dehydration equipment using heating and drying technology can effectively dry the sludge cake, but due to the high heating cost, the economy is not strong

[0003] "An Electroosmotic Sewage Treatment Machine" disclosed in Chinese Patent No. 200920291032.6, "Electrolytic Sludge Dewatering Machine" disclosed in Chinese Patent No. 201110028886.7, and "Electrode Sludge Squeeze Belt" disclosed in Chinese Patent Application No. 201210159902.0 The method of increasing the electrolysis method to improve the sludge dewatering efficiency has been proposed, but there are some defects. The main reason is that the three inventions all adopt the method of belt rolling, so that the sludge is dehydrated in the process of electrolysis while rolling, although it can Improve a certain work efficiency, but due to the different water content of different sludges, it is necessary to adjust the belt rolling pressure and speed adaptively according to different drying processes to meet the requirements of high sludge drying, resulting in the mechanical and electrical structure of the equipment The complexity increases the failure rate and also increases the cost of the equipment

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