Mobile kitchen garbage solid, oil, water three-phase separation and wastewater purification device

Abstract

The invention relates to a mobile kitchen garbage solid, oil, water three-phase separation and wastewater purification device which is composed of a kitchen garbage solid, oil, water three-phase separation and wastewater purification standardization device and a transportation vehicle assembled with the device. The device and the transportation vehicle are integrated into a whole, such that the mobile kitchen garbage solid, oil, water three-phase separation and wastewater purification device is formed. The device provided by the invention can carry out on-site collection of produced kitchen swill or wastewater purification standardization treatment at sites of restaurants, hotels, or authority canteens. With the device, kitchen swill can be separated into waste cooking oil and kitchen wastewater, and the wastewater can be subjected to continuous and rapid purification treatment. The purified water can reach a national related discharge standard. The device provided by the invention has the advantages of small volume and low land occupation. The device can be operated both manually and automatically.

Description

technical field [0001] The invention relates to a device for solid, oil, and water three-phase separation of mobile kitchen waste and waste water purification treatment; specifically, it is a "gutter" equipped with solid-liquid (swill) separation of kitchen waste and swill The separation of "oil" and kitchen wastewater, as well as the mobile device for further purification and on-site discharge of kitchen wastewater, belong to the field of environmental protection equipment. Background technique [0002] With the continuous improvement of people's lives, the amount of food waste generated is increasing day by day. Standardized, intelligent and low-cost collection of food waste in restaurants and kitchens can completely prevent the "gutter oil" in food waste from being put on the table, from the source Collect and manage "gutter oil" well, avoid kitchen waste directly entering the food chain as feed, in particular, carry out on-site purification and discharge of a large amoun...

AI Technical Summary

Problems solved by technology

[0003] Usually, solid waste (such as chopsticks, leftovers, etc.) in kitchen waste accounts for about 10% (wt%), "waste oil" accounts for about 5-10% (wt%), and waste water accounts for 85-80% Left and right (wt%); In CN101215020, disclose " food waste waste water grease integrated separation device and method ", in CN202492418U, disclose " a kind of oil-water separator for collecting waste oil "; Existing open and market The oil-water separation equipment for food waste used in the world mainly adopts the following oil-water separation principle, that is, the separation is carried out by utilizing the immiscibility of non-polar oil and polar water, and the difference in physical properties such as the density of water is greater than that of oil. ; Since the natural separation of oil and water takes a certain amount of time, and this time is closely related to the specific conditions such as the flow rate and temperature of the treated swill, most of the grease and suspended particles in the sewage of the catering industry are very small. The dispersed oil, emulsified oil, dissolved oil, and solid adhered oil are difficult to separate by gravity within a limited residence time. For this part of oil and suspended particles, the grease trap can be said to be helpless, and the grease trap can only be separated by gravity. Remove part of the slick oil; therefore, the disadvantages of the traditional oil-separation type and static layered oil-water separator for swill of restaurant waste are: oil-water separation requires a long period of standing and staying, and the volume of oil-water separation equipment per unit weight of swill and It occupies a large area, especially when the room temperature is below 15°C, the oil-water separation effect is poor, and a large number of "oil beads" are dissolved in the separated water, resulting in incomplete extraction and separation of "waste oil", and the separated wastewater The oil content, COD and BOD content in the water are high, and the oil concentration stipulated in the national "Water Quality Standard for Sewage Discharge into Urban Sewers" (CJ 3082-1999) does not exceed 100ml / L, and the COD concentration does not exceed 150ml / L ( 500ml / L), the BOD concentration shall not exceed 100ml / L (300ml / L)

[0005] In the CN101215020 device, three types of oil-water separation equipment connected in series in sequence, "gravity oil separation, air flotation skimming and coarse-grained oil removal", have the disadvantages that the equipment occupies a large area and the process route is long. This type of equipment is all arranged on the narrow and small vehicle body plate for oil-water separation of kitchen swill. This equipment is backward, which greatly increases the separation and treatment cost of swill; Reaction water treatment method and its device", using equipment such as variable-diameter pipes, anoxic acidification tanks, pulse water distributors and anaerobic reactors to treat wastewater; usually, the outdoor low temperature environment in winter will lead to a decrease in the reaction time of anaerobic fermentation Prolong and reduce the wastewater purification effect; the weakness of this equipment for wastewater treatment is: the acidification or anaerobic biochemical reaction time of wastewater is long, the floor area is large, the process is many, the treatment cost is high, the wastewater separated from the swill is purified to the standard treatment and discharge , it can only be carried out in the garbage treatment plant, and it is impossible to carry out the purification and standard treatment of wastewater on the body panel of the mobile vehicle with a small area.

[0006] The purification treatment technology of the now disclosed kitchen waste water mainly includes: physical method (as air flotation method), chemical method (as chemical precipitation method), physicochemical method (as reverse osmosis method), biological method (as aerobic or anaerobic method). Oxygen biological treatment method), etc.; according to the principle of biochemical reaction, one of the main factors affecting the effect of air flotation or biochemical degradation is temperature; under low temperature conditions, it is not conducive to the air flotation and biochemical degradation of kitchen wastewater; especially, when the winter low temperature season or When the ambient temperature is below 0℃ at night, the "gutter oil" in the swill freezes into a paste, the effect of oil-water separation or waste oil recovery is poor, and the grease paste blocks the storage and transportation equipment collected;

[0007] Through searching and consulting a large number of documents, magazines, books, CDs, patents, etc. at home and abroad, there is no related device that has solid, oil, and water three-phase separation of food waste and wastewater purification treatment at home and abroad. report;

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