Multifunctional sewage sedimentation tank and use method thereof

Abstract

The invention provides a multifunctional sewage sedimentation tank and a use method thereof, and belongs to the technical field of sewage treatment equipment. The multifunctional sewage sedimentation tank comprises a precipitation cylinder, a cover plate, a drain outlet, an exhaust pipe, a water inlet pipe, a water outlet pipe, a driving mechanism, a mud scraping mechanism and an opening and closing mechanism, the cover plate is slidably arranged in the precipitation cylinder, a precipitation cavity is formed between the cover plate and the interior of the precipitation cylinder, the drain outlet is formed in the bottom of the precipitation cylinder, and a first rotating shaft is coaxially and rotatably arranged in the drain outlet; One end of the exhaust pipe is fixedly connected to the cover plate, a third one-way valve is arranged on the exhaust pipe, the water inlet pipe and the water outlet pipe are both fixedly connected to the side wall of the precipitation cylinder, the driving mechanism can drive the first rotating shaft to rotate through vertical sliding of the cover plate, and when the first rotating shaft rotates, the sludge scraping mechanism can scrape sludge at the bottom of the precipitation cavity into the drain outlet, when the first rotating shaft rotates, the opening and closing mechanism can open and close the drain outlet. According to the invention, organic matters in sewage can be fermented to generate biogas, sludge at the bottom can be cleaned, and the multifunctional sewage sedimentation tank is green and environment-friendly.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment equipment, and relates to a multifunctional sewage sedimentation tank and a using method thereof. Background technique [0002] Domestic sewage is the wastewater discharged from residents' daily life, mainly from residential buildings and public buildings. The pollutants contained in domestic sewage are mainly fixed particles (plastic particles, sediment, etc.) and pollutants (such as protein, fat, urea, ammonia nitrogen, and a large number of pathogenic microorganisms, etc.). [0003] Usually, sewage needs to be pretreated before it is purified. The main purpose of pretreatment is to remove impurities and sediment in the sewage. The sludge is continuously deposited at the bottom of the sedimentation tank and needs to be cleaned regularly; More organic matter will ferment during the sedimentation process and produce biogas. The existing sedimentation tanks do not make reasonable use of t...

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Problems solved by technology

[0003] Usually, sewage needs to be pretreated before it is purified. The main purpose of pretreatment is to remove impurities and sediment in the sewage. The sludge is continuously deposited at the bottom of the sedimentation tank and needs to be cleaned regularly; A lot of organic matter will ferment during the sedimentation process and produce biogas. The existing sedimentation tanks do not make reasonable use of the biogas, resulting in energy waste

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