Sewage treatment method for medical institutions

Abstract

The invention relates to a sewage treatment method for medical institutions, which comprises the steps of sewage pretreatment, anaerobic treatment, aerobic treatment, precipitation treatment and disinfection treatment. The sewage treatment method for the medical institutions has low operation cost, is stable to operate and has high sewage treatment efficiency. Effluent continuously reaches the standard and is discharged in a qualified state. The pollution to the environment is effectively controlled. Therefore, not only is the environment improved, but also the load of a domestic wastewater treatment plant is relieved.

Description

technical field [0001] The invention relates to a method for treating sewage, in particular to a method for treating sewage in medical institutions. Background technique [0002] At present, most of the sewage treatment in medical institutions adopts biological treatment methods, including activated sludge method, membrane-bioreactor, biological aerated filter, and simple biochemical treatment. The above methods have certain defects. The activated sludge method has poor operation stability and is prone to Sludge bulking and sludge loss, the separation effect is not ideal; the gas-water ratio of the membrane-bioreactor is high, the membrane needs to be backwashed, and the energy consumption and operating costs are high; the biological aerated filter needs to be backwashed, and the operation mode is relatively complicated; The amount of recoil water is relatively large; physical and chemical indicators such as COD and BOD of the effluent from simple biochemical treatment canno...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the sewage treatment in medical institutions adopts biological treatment methods, including activated sludge method, membrane-bioreactor, biological aerated filter, and simple biochemical treatment. The above methods have certain defects. The activated sludge method has poor operation stability and is prone to Sludge bulking and sludge loss, the separation effect is not ideal; the gas-water ratio of the membrane-bioreactor is high, the membrane needs to be backwashed, and the energy consumption and operating costs are high; the biological aerated filter needs to be backwashed, and the operation mode is relatively complicated; The amount of recoil water is large; physical and chemical indicators such as COD and BOD of the effluent from simple biochemical treatment cannot be guaranteed to meet the standards

At present, many small and medium-sized medical institutions generally do not pay much attention to the treatment of sewage, and only stay on simple biochemical treatment, and there is no special person for management and operation. The various harmful organic substances, pathogens, and toxic bacteria discharged by them seriously pollute the surrounding water body. It also endangers the physical and mental health of the people

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