Kitchen waste water anaerobic MBR treatment device

Abstract

The invention discloses a kitchen waste water anaerobic MBR treatment device. The kitchen waste water anaerobic MBR treatment device comprises a kitchen anaerobic digestion cell and an anaerobic MBR membrane pool, wherein a bottom water inlet of the kitchen anaerobic digestion cell is connected with a kitchen waste water inlet pipe, and a bottom water outlet of the kitchen anaerobic digestion cell is connected with a sludge reflux pump; a top gas outlet of the kitchen anaerobic digestion cell is connected with a biogas tank by virtue of a biogas collection pipe, and a top water outlet of the kitchen anaerobic digestion cell is connected with the anaerobic MBR membrane pool; an anaerobic MBR membrane assembly is arranged in the anaerobic MBR membrane pool, the upper end of the anaerobic MBR membrane assembly is connected with a cleaning opening at the upper portion of the anaerobic MBR membrane pool, the bottom input end of the anaerobic MBR membrane assembly is connected with a biogas fan, the input end of the biogas fan is connected with the biogas tank, and a bottom water outlet of the anaerobic MBR membrane pool is connected with the sludge reflux pump. The kitchen waste water anaerobic MBR treatment device is high in automation, stable and reliable in operation, easy in operation, easy in management, and convenient for cleaning, replacing and additionally arranging the membrane.

Description

technical field [0001] The invention relates to anaerobic MBR treatment equipment for kitchen waste water. Background technique [0002] At present, the main components of catering wastewater are leftover food and water, with starch, dietary fiber, animal fat and other organic matter as the main components, with high nutritional content, high water content, high oil and salt content, and perishable fermentation. Features. [0003] After the kitchen wastewater enters the traditional anaerobic reactor, because the grease in the wastewater is attached to the anaerobic sludge, the sludge is not easy to settle and is lost with the water flow. As time goes by, the sludge loss gradually increases. The reproduction rate of anaerobic microorganisms is slow, and the newly grown anaerobic microorganisms are less than the lost anaerobic microorganisms, which eventually leads to a decrease in the sludge load in the anaerobic reactor and a decrease in the removal rate. [0004] At prese...

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Problems solved by technology

[0003] After the kitchen wastewater enters the traditional anaerobic reactor, because the grease in the wastewater is attached to the anaerobic sludge, the sludge is not easy to settle and is lost with the water flow. As time goes by, the sludge loss gradually increases. The reproduction rate of anaerobic microorganisms is slow, and the newly grown anaerobic microorganisms are less than the lost anaerobic microorganisms, which eventually leads to a decrease in the sludge load in the anaerobic reactor and a decrease in the removal rate

[0004] At present, there are many methods to try the sludge lost from the anaerobic reactor of kitchen wastewater. The effects of sedimentation and air flotation are not ideal, but the separation effect of centrifugation is good. However, under the action of strong centrifugal force, the sludge is all It has been broken, lost its original properties, and can no longer be reused. Therefore, it is necessary to find an equipment and process that can effectively intercept anaerobic sludge and recycle it, and can improve the efficiency of anaerobic treatment. For kitchen wastewater It is important to deal with

[0005] The anaerobic process requires maintaining a high microbial concentration, a long sludge age and a short hydraulic retention time, and its application is subject to certain restrictions

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