Kitchen waste water pretreatment, coagulation and sedimentation integrated device and method

Abstract

The invention discloses a kitchen waste water pretreatment, coagulation and sedimentation integrated device and method. The device is sequentially provided with a coagulation and flocculation basin, a buffer sedimentation basin and a sludge sedimentation basin according to the flow direction of waste water; the wastewater in the coagulation and flocculation basin overflows into a buffer sedimentation basin; an inclined plane is arranged at the bottom of the buffer sedimentation tank, a silt scraper is arranged in the buffer sedimentation tank, a side wall plate is arranged between the buffer sedimentation tank and the sludge sedimentation tank, the upper edge of the side wall plate is a water channel opening, and the lower edge of the side wall plate and the edge of the inclined plane form a silt channel opening; the silt scraper is matched with the inclined surface, so that silt on the inclined surface enters the sludge sedimentation tank through the silt channel opening; a water outlet of the sedimentation tank is an overflow port, and an effluent weir is arranged on the sedimentation tank and is positioned on the water outlet side of the sedimentation tank. The device is not only suitable for coagulating sedimentation of the kitchen waste water, but also can integrate pretreatment and coagulating sedimentation of the kitchen wastewater.

Description

technical field [0001] The invention belongs to the technical field of kitchen waste wastewater treatment, and relates to a coagulation-sedimentation integrated device and method for kitchen waste wastewater pretreatment. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] The function of coagulation and sedimentation is to remove suspended solids in sewage, and generally consists of three parts: mixing reaction tank, flocculation reaction tank and sedimentation tank. In the coagulation process, flocculants are usually added to the wastewater, and the flocculants and wastewater are fully mixed by mechanical stirring to form fine alum flowers. Then continue to add coagulant t...

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Problems solved by technology

The inventor found through research that at present, most of the existing coagulation devices for kitchen waste wastewater treatment are general coagulation sedimentation devices. When this general coagulation sedimentation device is applied to the field of kitchen waste wastewater pretreatment, there are Problems such as poor sedimentation effect, anaerobic floating of sediment, poor water discharge effect, and heavy maintenance workload

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