Residual sludge deep drying equipment system and method

Abstract

The invention discloses a residual sludge deep drying equipment system and a method thereof. The equipment system comprises a sludge pulverization device, a sludge powder drying device and a dry powder collection device which are sequentially connected. A sludge feeding device is arranged at the front end of the sludge pulverization device. The sludge pulverization device comprises a sludge pulverization chamber and a sludge feeding chamber, the sludge pulverization chamber is of a hollow cylindrical structure, a pulverization rotating shaft is arranged in the center of the sludge pulverization chamber, and a plurality of sludge pulverization impellers are arranged on the shaft. A first guide plate and / or a second guide plate are / is arranged below the sludge feeding hole. The sludge powderdrying device comprises a sludge powder drying chamber and one to two groups of drying rotating shafts arranged at the lower part of the sludge powder drying chamber. The dry powder collecting devicecomprises a steady flow collector and a cyclone separator. Sludge is pulverized into sludge powder in the sludge pulverizing chamber, then the sludge powder enters the sludge powder drying chamber tobe fluidized and dried, and finally the sludge powder enters the dry powder collecting device to be separated and collected. The system has the advantages of high drying efficiency and the like.

Description

technical field [0001] The invention relates to equipment and a method for deep drying of excess sludge, in particular to equipment and a process method for deep dehydration of excess sludge, which belongs to the subfield of treatment of excess sludge in sewage treatment plants in the field of environmental protection technology. Background technique [0002] With the development of our country's society and urbanization, the amount of urban sewage is increasing, the number of corresponding sewage treatment facilities is also increasing, and the by-product of sewage treatment - the amount of residual sludge is also increasing. . As of 2017, the annual output of surplus sludge in my country has exceeded 40 million tons, while the harmless treatment rate is less than 10%. How to properly handle and dispose of these continuously generated and increasingly large amounts of sludge has become an urgent problem to be solved in my country's environmental protection. [0003] The e...

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Problems solved by technology

As of 2017, the annual output of surplus sludge in my country has exceeded 40 million tons, while the harmless treatment rate is less than 10%.

The above process can quickly remove the water in the sludge, but the degree of dehydration is limited, and it is difficult to achieve deep drying of the sludge (moisture content ≤ 20%)

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