Disinfection of sewage and wastewater must be done thoroughly. If they are not treated properly or discharged directly without treatment, it will cause ecological and environmental pollution as well as pose a threat to human health. So disinfection is of vital importance! There are various disinfection methods, among which the chlorination disinfection method for wastewater is relatively common. What specific methods does it include? In this article, let’s have a brief understanding.
This article takes medical wastewater as an example! Carry out thorough disinfection treatment of medical wastewater to ensure water quality safety! In addition, do not forget the Medical Wastewater Online Monitoring. Only in this way can you know the situation of water quality treatment and whether it has all met the standards. Alright, no more chitchat. Let’s get to the point!
Chlorination disinfection can be said to be a relatively widespread method, mainly divided into liquid chlorine method, chlorine dioxide method and sodium hypochlorite method. Among them, sodium hypochlorite is a commonly used chemical reagent in hospitals. Compared with the other two, it is more convenient to use and store, but its disinfection ability is relatively weaker and it has oxidizing properties.
Among them, chlorination disinfection is also commonly used in the treatment of medical wastewater, which can be divided into two methods
1.Adding sodium hypochlorite or calcium hypochlorite to medical wastewater is cost-effective and convenient to use. It is suitable for places that generate less medical wastewater, such as township hospitals and health centers.
2.The wastewater is treated by the automatic sodium hypochlorite generator equipment, and then the chemicals are automatically dispensed according to the type and volume of the wastewater. This treatment effect is much more stable compared to the above method. However, this cost is higher than the above-mentioned one and is suitable for some hospitals with a large number of patients and a large amount of medical wastewater.
The above introduction is about the sodium hypochlorite method. What about the hypochlorous method and the chlorine dioxide method?
1.If it is the liquid chlorine method, it can rapidly generate hypochlorite ions in water, which are chemically reactive. The chlorine content in liquid chlorine is relatively high, so its disinfection ability is not weak and it is widely used in the treatment of medical wastewater. However, one point to note is that chlorine gas itself is a pungent and toxic gas, so it requires dedicated storage equipment.
2.What is the chlorine dioxide method? It is a strong oxidant. After dissolving in water, it will produce chlorite ions and hypochlorite ions, which can damage the human body’s absorption of iodine and thus harm red blood cells. For the treatment of medical wastewater, disinfection with chlorine dioxide can effectively remove live viruses and other substances, and is very effective in treating heavy metals such as iron, manganese and sulfuric acid.
When disinfecting medical wastewater by chlorination, it is also important to note that the total residual chlorine in the wastewater should be monitored in real time through the RCl900 Total Residual Chlorine Online Analyzer, and the dosage of the disinfectant should be well controlled to avoid excessive residual chlorine.
