Oily sewage filtering device arranged below trough

Abstract

The invention discloses an oily sewage filtering device arranged below a trough. The filtering device comprises a frame, the top wall of the frame is provided with a water inlet, a drawer type residue filtering device is arranged below the water inlet, the drawer type residue filtering device is positioned in the front of the frame, the rear side of the drawer type residue filtering device is provided with a vertical oil baffle plate, the oil baffle plate partitions the water accommodating zone of the frame into an oil collecting zone and a water outlet zone, the front panel of the frame in the oil collecting zone is provided with an oil collecting hole, the oil collecting hole is positioned below the drawer type residue filtering device, the water outlet zone is provided with a vertical drain pipe, the lower end of the drain pipe is communicated with the water outlet zone, and the side of the upper part of the drain pipe is provided with a water outlet. The filtering device has the advantages of simple structure, low production cost and ideal decontamination and oil removal effects.

Description

technical field [0001] The invention relates to a filtering device, in particular to an oily sewage filtering device installed under a water tank. Background technique [0002] The sewage discharge of the catering industry is characterized by the fact that the sewage contains a large number of solid substances with different diameters and high concentrations of animal and vegetable oils and their mixtures, especially the Chinese food wastewater with different cuisine structures; Due to different eating methods (such as Sichuan cuisine, Cantonese cuisine, seafood, etc.), the COD concentration (ie chemical oxygen demand) in the generated wastewater ranges from 5000 to 30000 mg / L. The environment has a serious impact. In the pipe area where the urban sewage is centrally treated, the municipal pipe network facilities will be seriously damaged due to the large amount of oil and its mixture contained in the sewage, such as pipe network blockage, pump station failure and sewage tre...

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Problems solved by technology

[0002] The sewage discharge of the catering industry is characterized by the fact that the sewage contains a large number of solid substances with different diameters and high concentrations of animal and vegetable oils and their mixtures, especially the Chinese food wastewater with different cuisine structures; Due to different eating methods (such as Sichuan cuisine, Cantonese cuisine, seafood, etc.), the COD concentration (ie chemical oxygen demand) in the generated wastewater ranges from 5000 to 30000 mg / L. The environment has a serious impact. In the pipe area where the urban sewage is centrally treated, the municipal pipe network facilities will be seriously damaged due to the large amount of oil and its mixture contained in the sewage, such as pipe network blockage, pump station failure and sewage treatment. The consequences such as a substantial increase in factory treatment costs have caused major economic losses to the country and also affected the daily lives of the people. Therefore, effective pretreatment of catering sewage discharge to remove the contained animal and vegetable oils and solid residues is not only beneficial to municipal management Network and facilities play a protective role, and can also greatly reduce the emission concentration of COD indicators, so that it meets the emission or management standards stipulated by the state. It is urgent

[0003] There are many problems in the filtration equipment currently on the market: such as unreasonable design, poor filtration effect, difficult installation, and difficult post-cleaning

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