Drying device for resource utilization of urban sludge
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A technology for urban sludge and recycling, which is applied in the field of urban sludge recycling and drying devices, can solve problems such as secondary pollution, and achieve the effects of reducing operating intensity, large heat transfer area, and avoiding long-distance transportation.
Inactive Publication Date: 2012-05-16
SICHUAN STONG EURO & AMERICA ENVIRONMENT ENG
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Sewage treatment plants have to discharge a large amount of excess sludge, and the huge amount of sludge needs to be further treated. If the sludge is not properly treated, it will cause secondary pollution
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[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. The invention relates to a drying device for resource utilization of urban sludge, which is characterized in that the main body includes: a sludge concentration tank (1), a sludge pump (2), a conditioning agent adding machine (3), a mixing mixer (4), Sludge water separator (5), belt filter press (6), screw conveyor (7), evaporation tower (8), blower (9), heating device (10), speed-adjustable mixer (11), screw feeder (12), shut off fan (13), first cyclone separator (14), second cyclone separator (15), dust collector (16), induced draft fan (17) etc. The sludge is collected in the sludge thickening tank (1) and after initial thickening, it is transported to the mixer (4) by the sludge pump (2), and the dehydration conditioner is added through the conditioner adding machine (3), and then passed through the mud-water separator (5 ) to separate most of the wa...
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Abstract
The invention relates to a drying device for resource utilization of urban sludge, wherein the main body comprises: a sludge concentration tank, a sludge pump, a conditioner adding machine, a mixing stirring machine, a mud-water separator, a belt press filter, a screw conveyor, an evaporation tower, an air blower, a heating device, a speed-regulating mixer, a self-conveyor feed, a first cyclone separator, a second cyclone separator, a dust catcher, a draught fan and so on. The sludge is concentrated primarily, and is added with dehydrating conditioners by the conditioner adding machine, wherein disinfectants are mixed in the conditioner according to the nature of the sludge; the sludge enters the belt press filter to dehydrate after being separated out most of the water by the mud-water separator, and the dehydrated sludge is conveyed to the self-conveyor feed by the screw conveyor, and is stirred and crushed, and mixed with hot air sent by the air blower, and is evaporated and dried in the evaporation tower, and enters the two cyclone separators through the top of the evaporation tower, wherein the dried sludge is collected in hoppers of the cyclone separators, and the tail gas is treated by the dust catcher. The drying device largely lowers the water content of the sludge.
Description
technical field [0001] The invention relates to a drying device for resource utilization of urban sludge, which is applied to the pretreatment of urban sludge resource utilization to granulate the sludge. Background technique [0002] With the acceleration of urbanization in our country, the rapid development of industrial production, the increase of urban population, the discharge of urban industrial wastewater and domestic sewage is increasing, the rate of urban sewage treatment is also increasing year by year, and the sludge output of urban sewage treatment plants is also increasing rapidly. Increase. Sewage treatment plants have to discharge a large amount of excess sludge, and the huge amount of sludge needs to be further treated. If the sludge is not properly treated, it will cause secondary pollution. According to statistics, there are thousands of urban sewage treatment facilities in operation across the country, which generate more than 10 million tons of sludge (d...
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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/14
Inventor 李华郑传勇
Owner SICHUAN STONG EURO & AMERICA ENVIRONMENT ENG
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