Integral separation device and method for kitchen garbage, waste-water and grease

Abstract

Disclosed are an oil-water separation facility and a method for refuse waste-water of kitchens, which relate to the field of environment protection. The facility and method are composed of three portions which are respectively gravity oil slick, micro-airfloat oil skimming, thick granulating and the like in accordance with grease distribution shape and character of the refuse waste-water of kitchens, wherein the gravity oil removal section automatically excludes upper oil slick, emulsified oil, dispersed oil and the like float off via the micro-airfloat, thereby achieving separation of oil with smaller particles and water, after handling, oily wastewater left by the treatment of the above two sections further proceeds thick granulating process to lead micro-grease to assemble and form the grease with big particle diameter, then the grease with big particle diameter after floating upward is removed, thereby achieving being separated from water. The facility is capable of separating highly effectively the grease in sewage water, reducing organic loading of subsequent sewage water treatment, simultaneously the separated grease can be prepared into biological diesel fuels, soapstocks and the like, thereby improving resource recycling efficiency. The method has the advantages of feasible technique, cheapness and convenience, automation operation, which is not influenced by seasonal difference in temperature.

Description

technical field [0001] The invention relates to an oil-water separation device and method in the field of environmental protection, in particular to a waste water oil separation device and method in the catering industry. Background technique [0002] The rapid development of the urban catering service industry has led to a large amount of kitchen waste, which contains a large amount of sewage with high concentrations of animal and vegetable oils. This kind of oily sewage is different from hydrocarbon-containing petroleum sewage, because the composition and existence form of oil in sewage are more complicated because of high-temperature treatment and vigorous stirring and mixing. This kind of wastewater is directly discharged to the urban domestic sewage pipe network, and the grease is easy to adhere to the pipe wall, which is easy to block the pipe, and it is difficult to dredge, causing a huge burden on the urban municipal management department. When the oily wastewater i...

AI Technical Summary

Problems solved by technology

Some adopt microbial oil decomposition technology, that is, put microorganisms into wastewater, and use the metabolism of microorganisms to decompose oil. However, due to the long reaction process, odorous gas will be generated after decomposition, which will affect the atmospheric environment. Especially after oil is decomposed, it cannot be recycled, resulting in oil pollution. waste of resources

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