Hospital wastewater comprehensive treatment device with zero sludge discharge and treatment method thereof

Abstract

The invention discloses a hospital wastewater comprehensive treatment device with zero sludge discharge and a treatment method thereof. The device is composed of a chlorine dioxide disinfection tank,a three-grid septic tank, an adjusting tank, a closed ultraviolet sterilizer, a multistage bio-chemical tank and a chlorine dioxide disinfection tank which are sequentially connected in series, and further comprises a waste gas treatment module; a cutting pump is arranged in the adjusting tank; the waste gas treatment module is composed of plasma equipment and activated carbon adsorption equipment; wherein the multi-stage biochemical tank is formed by connecting a multi-stage unit A, a multi-stage unit O and a precipitation unit in series, part of sludge at a sludge outlet of a precipitation unit flows back to the front section of the multi-stage unit A through a sludge return pump and a sludge return pipe, and the rest sludge is discharged to the water inlet section of the three-grid septic tank as residual sludge; by adopting the treatment method disclosed by the invention, the effluent quality is superior to the standard of Discharge Standard of Water Pollutants for Medical Organization (GB18466-2016), the treatment method has the advantages that residual sludge, grid slag and the like are not generated, and the risk of bacterial infection of aerosol, sludge, grid slag, waste gas and the like is avoided.

Description

technical field [0001] The invention belongs to the technical field of water pollution control, and in particular relates to a comprehensive treatment device for hospital wastewater with zero sludge discharge and a treatment method thereof, in particular to a treatment device for zero discharge of sludge for contagious hospital virus wastewater. its processing method. Background technique [0002] The quality of hospital sewage is complex. Hospital sewage is mainly sewage from comprehensive wards. Hospital sewage contains a large number of pathogens, disinfectants, organic solvents, thick blood, tissue waste, drugs and detergents, etc., as well as a large number of bacteria, infectious agents, etc. Viruses, parasite eggs and other harmful substances. At present, there are many deficiencies in the treatment methods of hospital wastewater. Most of the hospital wastewater is directly disinfected and discharged, and a few are disinfected after secondary biological treatment. I...

AI Technical Summary

Problems solved by technology

At present, there are many deficiencies in hospital wastewater treatment methods. Most hospital wastewater is directly sterilized and discharged, and a few are re-disinfected after secondary biological treatment. Inactivation, and existing biochemical treatment devices have disadvantages such as weak treatment effect and excessive residual chlorine in pretreatment disinfection affect subsequent biochemical reactions; There is live virus in the feces of confirmed patients, and there is a risk of fecal-oral transmission; and the exposed sludge, screening residue, and aerosols generated during the aeration process in the wastewater treatment system also contain viruses, and there is a significant risk of infection. So far, no Hospital wastewater treatment equipment and treatment methods with zero sludge discharge, and no hospital wastewater treatment equipment and treatment methods that fully consider the risk of virus transmission

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