Membrane-technology medical wastewater treatment method and apparatus with ultraviolet ray disinfection

Abstract

The present invention provides a membrane-technology medical wastewater treatment method and a membrane-technology medical wastewater treatment apparatus with ultraviolet ray disinfection, and belongs to the technical field of wastewater treatment. The method solves technical problems that sludge is easily produced in existing wastewater treatment, a wastewaster treatment apparatus has a large occupied area, and the like. The medical wastewater treatment method provided by the present invention comprises: a. pretreatment: putting the wastewater into a decomposition tank, and using an anaerobic fermentation method to treat the wastewater; b. aerobic treatment: putting the wastewater treated in the step a into an aeration tank, and using an aeration method to enable full contact between air and the wastewater; c. membrane module treatment: putting the wastewater treated in the step b into a membrane module treatment tank, using a membrane-bioreactor to filter and intercept suspended substances in the wastewater, and performing degradation on organic substances and oxidizable substances in the wastewater; and d. ultraviolet disinfection, emission, and the like. The present invention further comprises an apparatus for implementing the method. According to the present invention, the medical wastewater treatment method is good in water discharge effect, the suspended substances are smaller than 10 mg / L, ultraviolet sterilization is utilized, no secondary pollution is produced, and therefore, the method is safe in operation, reliable, and low in production, operation and maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of medical wastewater treatment, and relates to a method and device for treating medical wastewater with membrane technology with ultraviolet disinfection. Background technique [0002] The world's fresh water resources are relatively scarce. China is a country seriously short of water. Sewage treatment and reuse is one of the effective measures for the development and utilization of water resources. Sewage reuse is to reuse urban sewage, industrial sewage, etc. after being treated by sewage treatment equipment; all kinds of sewage can be obtained nearby, which can avoid long-distance water transportation, and realize nearby treatment to realize full utilization of water resources, and at the same time The nearby treatment of sewage can also prevent sewage leakage during long-distance transportation, resulting in pollution of groundwater sources; sewage reuse has been widely used in many water-scarce areas i...

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Problems solved by technology

[0004] Although the sewage treatment tank in the above patent is equipped with an automatic filter membrane cleaning device to clean the filter membrane, the device has a complex structure and takes up a large space. At the same time, the ordinary filter membrane used in the sewage treatment tank in the above patent will deposit a large amount of sludge , difficult to deal with, and the effect of filtered water quality needs to be improved

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