A method for treating catering wastewater by oil separation and lifting

Abstract

The invention discloses a method for oil-separating and lifting treatment of catering wastewater, which comprises the following steps: step 1, separation of impurities in catering wastewater; step 2, using an oil-water separation box to realize oil-water separation; step 3, using a sewage lifting box to realize sewage lifting and discharge . The liquid inlet of the oil-water separation tank is equipped with at least one liquid distribution baffle with a porous structure, and the baffle stands vertically or inclined in the oil-water separation tank to form a liquid inlet distribution guide system. An overflow weir type water sealing device is used between the oil-water separation box and the sewage lifting box. When the waste water of the present invention enters the oil-water separation tank, it can ensure the uniform diversion effect and reduce the short-flow and turbulent flow of the waste water, so as to avoid the formation of flow dead zone; Vortex, destabilizing the water layer.

Description

technical field [0001] The invention relates to a method for treating catering wastewater, in particular to a method for treating catering wastewater through oil separation and lifting. Background technique [0002] At present, the treatment method of most catering oily wastewater is to build a new grease trap or build a grease trap. According to the test results of oil-water separation, the longer the residence time of oily wastewater from catering in the static oil separation equipment, the better the effect of separating floating oil from water. The existing traditional oil trap equipment and technologies mainly include: traditional civil construction grease traps, such as: advection type grease traps, inclined plate type grease traps, small grease traps, a non-powered grease trap, etc. This traditional oil separation method is relatively traditional technology, relatively backward, the main shortcomings are: [0003] 1. The oil separation effect of the traditional grea...

AI Technical Summary

Problems solved by technology

[0003] 1. The oil separation effect of the traditional grease trap and grease trap is poor, and the pretreatment has not achieved the effect, which affects the subsequent sewage treatment process;

[0004] 2. The volume of the oil separation tank is too large and occupies a large area;

[0005] 3. Since the sundries in the sewage are not well separated, they enter the oil separation tank, and the long-term deposition needs to be cleaned or cleaned manually, and the operating environment is quite poor;

[0006] 4. The volume utilization rate of the oil separation box is not high;

[0007] 5. Traditional equipment requires large investment and inconvenient management;

[0008] 6. The water inlet and outlet structure of the pipeline in the equipment is prone to short flow, eddy current and circulating flow;

[0009] 7. Manual oil skimming is required, the operating environment is poor, unsafe and reliable, which brings a lot of trouble to the oil cleaning work, causing the operators to be unwilling to clean the oil, making the equipment unable to use normally, and the water output is not up to standard

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