Multi-stage treatment system and operation method for virus prevention and control in river outlets

Abstract

The invention discloses a multistage treatment system for riverway discharge port virus prevention and control and an operation method. The multistage treatment system is characterized in that the multistage treatment system is composed of an oxidant supply module, an ultraviolet oxidation combination module and a biological and ecological treatment module; and the oxidant supply module is arranged near a riverway discharge port and used for supplying hydrogen peroxide, a chlorine dioxide solution, ozone and other green oxidants to the ultraviolet oxidation combination module; the ultravioletoxidation combination module is used for efficiently inactivating viruses in water discharged from a discharge port through the combined action of ultraviolet rays and various oxidants, and has the functions of water purification and odor removal; the biological and ecological treatment module is used for realizing advanced treatment of water discharged from the discharge port through the decomposition and assimilation of microorganisms, the interception and filtration of a filter membrane and the adsorption and absorption of plant root systems. Compared with the prior art, the system has theadvantages of good environmental, ecologic, social and economic benefits and the like, and realizes the purposes of virus prevention and control, water quality purification and stink removal of the water of the discharge port.

Description

technical field [0001] The invention relates to the technical field of municipal sewage treatment, in particular to a multi-stage treatment system and operation method for virus prevention and control in river outlets. Background technique [0002] As an important part of the urban drainage system, the discharge outlet is responsible for discharging rainwater to the surface water body or entering the surface water body after being treated by the sewage treatment plant. It is an important part of the quality and efficiency improvement of the drainage system. Relevant research shows , the outlet of the river channel is an important carrier library for microorganisms, and there are many kinds of human viruses and pathogenic bacteria. [0003] The 2019-nCoV virus may have a potential transmission and exposure route from the toilet to the drainage network, to the discharge outlet, and finally to the surface water body. If the wastewater carrying a large amount of viruses or path...

AI Technical Summary

Problems solved by technology

If the wastewater carrying a large number of viruses or pathogenic bacteria flows into the surface water body through the discharge outlet, it is easy to cause the virus to spread to the water source and enter the drinking water treatment and water supply system, endangering public health and human health

In addition, due to the fall of the discharge port or the turbulent flow, the splashed water is easy to form aerosols, which increases the risk of infection for surrounding residents or passing pedestrians, and even triggers super-spreading events

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