In a special place like a hospital, not only is the current COVID-19 pandemic causing a huge stir, but disinfection work is also indispensable on a regular basis. So, what disinfectants can be used to disinfect medical wastewater? Now let’s learn more about it together with Modi!
There are many types of disinfection for medical wastewater, such as chlorine-containing disinfectants (chlorine dioxide disinfectants, etc.) and active oxygen treatment agents (potassium peroxymonosulfate complex salts), etc. It mainly depends on whether you agree with the hospital’s handling method or not! The following are two treatment methods for chlorine dioxide and active oxygen.
Take Type II disinfectant powder with a content of 48% as an example.
Pour the chlorine dioxide Type II A agent into A plastic container or porcelain container containing 24 times its volume of water (do not pour water into the powder), and pour the matching activator B agent into another plastic container or porcelain container containing 24 times its volume of water (do not pour water into the powder). Then, slowly mix the A and B solutions in one container and let it stand for reaction for 60 to 90 minutes. Then, a chlorine dioxide solution is obtained. Then, in accordance with GB26366 “Hygienic Standard for Chlorine Dioxide Disinfectants”, it is used for hospital sewage disinfection. The dosage concentration of chlorine dioxide is 20 to 40mg/L, and the action time is 30 to 60 minutes. Users can also adjust the usage concentration as appropriate based on the water quality conditions in accordance with GB18466 “Discharge Standard of Water Pollution for Medical Institutions”.
Active oxygen treatment agent (potassium peroxymonosulfate complex salt) is a powder specifically used for disinfecting hospital sewage.
Properties: White powder or granules
Main components and contents: Potassium monopersulfate 18%-25%, sodium chloride 5%-6%.
Product Description: This disinfectant powder is mainly made of potassium monopersulfate double salt, citric acid and sodium chloride. The content of potassium monopersulfate is 18%-25%, the content of sodium chloride is 5%-6%, and the content of active oxygen is 13%±1.3%. It can kill common bacteria and bacterial spores causing hospital infections such as Staphylococcus aureus, Escherichia coli and pathogenic yeasts.
Scope of application: Applicable to the disinfection of hospital sewage.
Usage method: Open 1kg of this product and pour it into a plastic container or porcelain container containing 100kg of water (add water first and then powder, do not reverse the order). Stir until dissolved (at a water temperature of 25℃), then dilute it according to the proportion in the table below to prepare a solution for use.
Of course, no matter what method is used for disinfection, there are both advantages and disadvantages! The drawback is that these chemical disinfection methods also have a quantity limit. Once the limit is exceeded, it will be harmful to the ecological environment and human health! Therefore, what the staff need to do is to handle the subsequent online water quality monitoring work well. If chlorine-containing disinfectants are used for disinfection, then a total residual chlorine online analyzer should be used to monitor the total residual chlorine in the wastewater in real time and control the dosage. If active oxygen is used for disinfection treatment, then an online active oxygen analyzer is needed to monitor the active oxygen in the wastewater in real time.
