Integrated recycled water treatment device

Abstract

The invention discloses an integrated recycled water treatment device. The device comprises a regulating tank, an aeration grille, an air floating tank, an anaerobic tank, an aerobic tank, a settling tank, a filter tank, a disinfection tank and a siphonic mud discharge pipe, wherein the aeration grille is arranged at a water inlet of the regulating tank; the air floating tank is arranged at the upper end of the regulating tank; one end of the siphonic mud discharge pipe is arranged in the regulating tank, and the other end of the siphonic mud discharge pipe is arranged at the bottom of the settling tank; and the sewage to be treated firstly flows through the aeration grille, then is pumped to the air floating tank by a lifting pump, and sequentially flows through the air floating tank, the anaerobic tank, the aerobic tank, the settling tank, the filter tank and the disinfection tank of which the highest liquid level differences are successively reduced. Sludge settled at the bottom of the settling tank in the integrated recycled water treatment device can be pumped to the inside of the regulating tank by the siphonic mud discharge pipe, thereby ensuring the quality of the water discharged from the integrated recycled water treatment device. According to the integrated recycled water treatment device disclosed by the invention, the backflow of sludge in the settling tank is realized through the siphonic mud discharge pipe, and the sewage treatment load of the device is improved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to an integrated reclaimed water treatment device. Background technique [0002] my country's "Twelfth Five-Year" environmental protection development plan has clearly proposed the combination of decentralized sewage treatment and centralized sewage treatment, and the country has paid more and more attention to environmental protection, especially for sewage treatment. Higher standards have been put forward. As water resources become more and more scarce with the rapid economic development, more and more attention has been paid to the reuse of reclaimed water, especially for distributed pollution-producing units such as hotels or scenic spots, which put forward higher requirements for reclaimed water reuse. [0003] At present, there are mainly the following types of integrated reclaimed water treatment devices: the first is the integration of hydrolysis, anaerobic treatmen...

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Problems solved by technology

[0003] At present, there are mainly the following types of integrated reclaimed water treatment devices: the first is the integration of hydrolysis, anaerobic treatment, aerobic biochemical treatment, secondary sedimentation treatment, secondary lifting treatment, ordinary sand filtration treatment, disinfection and other processes. In the chemical water treatment device, the hydrolysis tank is equipped with a mechanical stirring mechanism, and the sludge in the secondary sedimentation tank is pumped back to the front-end treatment tank. This device consumes a lot of power, and once the water load increases, the treatment The recycled reclaimed water will not be able to meet the reuse standard; the second is an integrated reclaimed water treatment device composed of grille, sedimentation pretreatment, anaerobic, aerobic biochemical plus hollow fiber membrane filtration, disinfection and other processes. The hollow fiber membrane filtration in the device adopts self-priming pump suction method to discharge water, which consumes a lot of power. The hollow fiber membrane needs to be cleaned regularly and pickled during use, resulting in high investment cost and cumbersome operation of the device; the third It is an integrated reclaimed water treatment device composed of pretreatment, hydrolysis acidification, two-stage biological aerated filter, filtration and disinfection. The device also needs a second lift or a higher lift during operation. It requires Using power equipment such as water inlet pumps, backwash pumps, fans, etc., the power loss is also large, which cannot meet the heavy load of sewage treatment, and there are multiple switching valves between operation and backwashing, the equipment is more complicated, resulting in operation and maintenance points. More, and higher technical requirements

Obviously, the above-mentioned integrated secondary water treatment devices all have the problem of large power consumption, and these integrated secondary water treatment devices cannot meet the treatment requirements of heavy sewage; in addition, the above-mentioned integrated secondary water treatment devices also have different degrees of There are problems of high investment cost, cumbersome operation, many operation and maintenance points, and high technical requirements

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