Treatment technology of hospital sewage treatment equipment

Hospital sewage treatment equipment technology:
1. Wastewater phase washing treatment.
The processing wastewater mainly comes from the printing of radiographs, and its pollutants are mainly developer, fixer and bleach. In addition, the fixer contains silver, which can be recycled. The recovery methods of silver include electrolytic extraction and chemical precipitation. Low-concentration silver-containing wastewater can also be treated by ion exchange and activated carbon adsorption.

2. Treatment of mercury-containing wastewater.
Mercury wastewater mainly comes from various dental clinics and measuring instruments. Mercury is very harmful. Once in water, it can be converted into organic mercury and concentrated through the food chain. The treatment methods of mercury-containing wastewater include iron filing reduction method, chemical precipitation method, activated carbon adsorption method and ion exchange method.

3. Acid wastewater treatment.
Hospital acid wastewater mainly comes from testing items or chemical cleaning agents. Acidic wastewater corrodes drains and reacts with metals to produce hydrogen. At higher concentrations, it releases heat on contact with water and explodes on contact with salt. Acidic wastewater not only causes changes in the overall pH of the wastewater, but also causes and promotes changes in other chemicals. Under acidic conditions, substances such as sodium azide will produce sodium azide (NaN3), causing explosion and strong toxicity. Acidic wastewater is often neutralized and treated. Removal of sodium hydroxide lime is used as a neutralizer and mixed with acidic wastewater.

4. Treatment of infectious virus wastewater.
Hospital sewage contains a large number of pathogenic microorganisms, viruses and chemicals. It has the characteristics of space pollution, acute infection and latent infection. Disinfectants and UV light can be used to treat viral wastewater.

5. Dispose of other waste liquids and waste water.
The wastewater discharged from hospitals also contains a large number of organic solvents, disinfectants, pesticides and other chemicals. Toxic and harmful waste water containing these special pollutants shall not be discharged at will.

Advantages of hospital sewage treatment equipment:
1. Small footprint: Due to the high-efficiency separation function of the membrane, there is no need to set up solid-liquid separation equipment such as precipitation and filtration, and no backwashing is required. In addition, the concentration of suspended solids in the effluent is much lower than that of traditional solid-liquid separation equipment, making the entire system process simple, easy to integrate, and greatly reducing the system footprint.

2. The effluent quality is good: the membrane bioreactor technology is adopted to make the effluent quality of the system better than traditional sewage treatment equipment in all aspects. The quality of the effluent is close to tap water in sensory aspect, and can be reused as reclaimed water.

3. High degree of automation: Due to the use of membrane technology, the process flow is greatly shortened. Through advanced control technology, the equipment is highly integrated and intelligent.

4. Save operating costs: Membrane bioreactors can filter out harmful substances such as bacteria and viruses, reduce disinfection equipment and daily consumption, and make management and operation more convenient.

The hospital sewage treatment equipment system has strong impact resistance and adaptability: it prevents the loss of various microbial flora, which is conducive to the growth of bacteria, and the production speed is slow, which makes the residence time of some polymer refractory organic substances longer, which is conducive to the growth of bacteria. Its decomposition enables various metabolic processes in the system to proceed smoothly.

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