Restaurant wastewater treatment and recycle device and method

Abstract

The invention relates to the field of industrial wastewater treatment devices and process technologies, in particular to a restaurant wastewater treatment and recycle device and method. By means of the restaurant wastewater treatment and recycle device and method, secondary pollution is not caused and cost is reasonable. The device is characterized in that the device is provided with a separation pond, a smashing machine, a conveying mechanism, a settling pond, an ozone oxidization mechanism, an aeration tank and a filtering and sedimentation mechanism, wherein the separation pond is used for separating large foreign bodies in wastewater from sewage, the smashing machine is used for smashing the separated large foreign bodies, the conveying mechanism is used for putting the smashed foreign bodies into a biochemical pool, the settling pond is used for precipitating and filtering the separated wastewater, the ozone oxidization mechanism is used for oxidizing and decomposing the precipitated filtered liquid, the aeration tank is used for performing aeration treatment of sewage subjected to ozone oxidization and decomposition, and the filtering and sedimentation mechanism is used for filtering the sewage decomposed by the biochemical pool. Compared with the prior art, acidic matter or alkaline matter does not need to be added in the sewage treatment process to adjust the sewage, secondary pollution is not caused, treated waste residues and the wastewater can be recycled, and the device and method have the advantages of being low in cost, stable in work, environmentally friendly, low in consumption and the like.

Description

Technical field: [0001] The invention relates to the technical field of industrial wastewater treatment equipment and processes, in particular to a catering wastewater treatment and recovery device and method with no secondary pollution and reasonable cost. Background technique: [0002] With the vigorous development of the catering industry, the discharge of catering wastewater is increasing, and it has become an important source of urban sewage, which accounts for 3% of the urban wastewater discharge. However, the COD and BOD of catering wastewater 5 However, the contribution value has reached about 1 / 3. This is because the catering wastewater has a high organic content and a very complex composition, mainly including dietary fiber, starch, fat, animal and vegetable oils, various condiments, detergents and proteins. Therefore, non-compliant discharge of restaurant wastewater will not only increase the load of urban wastewater treatment, but also cause certain pollution to rive...

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Problems solved by technology

[0004] At present, there are mainly biological methods (SBR method, magnetic powder enhanced activated sludge method, contact oxidation method, MBR method), gravity and centrifugal separation method, air flotation method, adsorption method, electrochemical method (electrocoagulation method) for the treatment of catering wastewater. , micro-electrolysis-electrolysis, pulse electroflocculation), coagulation and other methods, but there are many dosages of chemicals, the threat of secondary pollution, large amount of sludge, difficult to handle or easy plugging of fillers, and the treatment effect varies with the pH of wastewater, etc. Problems such as large fluctuations in water quality indicators

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