Analysis of the Wastewater Treatment Process for Hospital Wastewater Treatment Equipment
Release time：
2026-05-07
Domestic sewage discharged by hospitals and medical and health institutions contains a large number of germs, viruses and other toxic and harmful substances. Classified by hospital nature, it can be divided into infectious disease hospital wastewater and general hospital wastewater; classified by wastewater composition, it includes radioactive hospital wastewater, waste pharmaceutical hospital wastewater, and hospital wastewater containing heavy metal ions.
The medical wastewater treatment process of hospital wastewater treatment equipment is as follows:
Pretreatment + Primary Treatment + Secondary Treatment + Advanced Treatment + Disinfection + Effluent Discharge
It is a process to improve the water quality of hospital wastewater, mainly aiming to eliminate pathogenic bacteria in sewage. To enhance the disinfection effect, wastewater can be pretreated before disinfection, including primary and secondary treatment.
The core of wastewater treatment by hospital wastewater treatment equipment is disinfection, namely the killing of pathogens. The water quality of hospital wastewater is extremely complex. Generally, as water consumption increases, the corresponding concentration of pollutants rises gradually. A regulating tank shall be arranged in the hospital wastewater treatment process as far as possible. The regulating tank can not only adjust water volume and eliminate peak load, but also balance water quality, ensuring the treatment effect is not affected by water quality fluctuations. The dosing point of chlorine dioxide disinfectant is generally set behind the regulating tank. After flotation and sedimentation, the wastewater flows into the disinfection tank for disinfection with disinfectant prepared by a chlorine dioxide mixing generator, and is then discharged up to standard. Excess sludge from the spontaneous flotation sedimentation tank is discharged into the regulating tank, and sludge from the regulating tank and contact oxidation tank is pumped into the sludge digestion tank for aerobic digestion treatment before being discharged up to standard.
Contact Oxidation + Sedimentation + Disinfection
The aerobic biochemical treatment unit removes organic pollutants such as CODcr and BOD5. Available aerobic biochemical processes include contact oxidation, activated sludge process and high-efficiency aerobic treatment technologies such as membrane bioreactor (MBR) and biological aerated filter (BAF). Adopting high-efficiency aerobic treatment processes with filtering function can reduce the concentration of suspended solids and facilitate subsequent disinfection.
Membrane bioreactor (MBR) is an innovative wastewater treatment technology combining membrane separation and biological treatment technology. It is mainly composed of a biological treatment aeration tank and membrane separation modules. Most organic matters in wastewater are decomposed by microorganisms, and the membrane separation modules intercept particles and microorganisms larger than the membrane pore size in the mixed liquid, producing treated effluent that can be reused as reclaimed water or discharged as qualified effluent.
Primary Contact Oxidation + Primary Sedimentation + Secondary Contact Oxidation + Secondary Sedimentation + Disinfection
After being lifted, wastewater enters the coagulation sedimentation tank for coagulation and sedimentation. The effluent from the sedimentation tank flows into the contact tank for disinfection and is discharged up to standard. Sludge from the regulating tank, coagulation sedimentation tank and contact tank, as well as grid residue and other waste generated in the wastewater treatment station, are centrally disinfected and transported out for disposal.
Key words:
Recommend News
-
Tel:+ 86-182-6161-0095
-
Enterprise E-mail: 329427520@qq.com
-
Headquarters:No. 519 Kunjia Road, Development Zone, Kunshan City, Jiangsu Province