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Sludge online reduction system and treatment method

A sludge and weight reduction technology, applied in the fields of sludge treatment, biological sludge treatment, water/sludge/sewage treatment, etc., can solve the problem of increasing the cost of sewage treatment, failing to reduce the amount of sludge, and reducing the total amount of solid matter. Changes and other issues to achieve the effect of saving labor costs, easy control, and easy promotion and implementation

Pending Publication Date: 2017-09-08
TIANJIN ENEW ENVIRONMENTAL PROTECTION ENGCO LTD
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  • Claims
  • Application Information

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Problems solved by technology

[0003] The conventional sludge reduction method is to reduce the amount of sludge produced by improving the dehydration effect of the sludge, but the total amount of solid matter in the sludge remains unchanged, and the real sludge reduction has not been achieved; another sludge reduction The amount method is to destroy the microorganisms in the sludge and convert the sludge into a carbon source. The amount of sludge is reduced, but the pollutants in the sludge enter the sewage treatment system again, which is likely to increase the cost of sewage treatment, and Sewage plant effluent is not up to standard

Method used

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  • Sludge online reduction system and treatment method

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Effect test

Embodiment 1

[0066] Sludge from a sewage plant has a water content of 84%, the amount of sludge fed into the device is 10kg / h, and the residence time in the inorganic matter removal device is 96h. The pH of the reaction tank is controlled 4.5, and the conditioning device pH>7, the moisture content of the inorganic product is 53%, and the output is 0.1kg / h; COD is about 1100mg / L, and the solid content is 4.82%.

Embodiment 2

[0068] Sludge from a sewage plant has a moisture content of 87%, the amount of sludge fed into the device is 10kg / h, and the residence time in the inorganic matter removal device is 7h. The pH of the reaction tank is controlled 4, and the conditioning device pH>5, the moisture content of the inorganic product is 51%, the output is 0.21kg / h, the moisture content of the sandy sludge is 60%, the output is 1.0kg / h, the sludge reduction reaches 88%, and the aerobic The effluent COD is about 170mg / L, and the solid content is 2.25%.

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Abstract

The invention provides a sludge online reduction system and treatment method. A main system comprises an inorganic substance removal device, a solid-liquid separation device, an inorganic sediment device, an inorganic product dewatering device, a tempering device, a desanding device, a sand dewatering device, a cell breaking device and a hydrolytic acidification device. Firstly, contaminants in sludge are removed, more preferably, the sludge is converted into resources, and then solid matter reduction treatment is performed on the sludge, so that online reduction of the sludge of a sewage treatment plant is really realized.

Description

technical field [0001] The invention relates to the field of sludge treatment, in particular to an online sludge reduction system and treatment method. Background technique [0002] Sludge is a by-product of sewage treatment. With the increase of urban domestic sewage treatment volume and treatment rate, sludge production has also increased sharply. Sludge disposal consumes a lot of energy and has high operating costs. Sludge disposal costs account for about 1 / 3 of the sewage plant's operating costs. At the same time, the large sludge output causes secondary pollution of solid waste. At the end of 2015, there were 6,000-7,000 urban sewage treatment plants nationwide, with a sewage treatment capacity of 217 million cubic meters per day. In 2015, the national urban sludge production reached 38.07 million tons, and the sludge treatment capacity was less than 1 / 3, and the sludge disposal cost As high as about 300 yuan / ton, the annual cost of all sludge treatment reaches 11.4 bi...

Claims

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Application Information

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IPC IPC(8): C02F11/00C02F11/04C02F11/12C02F11/14
CPCC02F11/00C02F11/04C02F11/12C02F11/14C02F2303/26C02F2303/24C02F2303/06
Inventor 马竞男王学科穆童
Owner TIANJIN ENEW ENVIRONMENTAL PROTECTION ENGCO LTD
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