Wastewater treatment is not a new topic. In our daily life, domestic wastewater is constantly produced every day. If left untreated, some of the dangerous pathogens within the wastewater may enter rivers and drinking water, leading to a wide range of water-borne infectious diseases, such as typhoid fever, dysentery, cholera, enteritis, infectious hepatitis and schistosomiasis, etc. Therefore, necessary measures must be taken to ensure the safety of water sources before harms are caused by domestic wastewater.
Nowadays, instead of chemical sterilization method such as chlorination, ultraviolet (UV) is increasingly applied for both industrial and domestic wastewater treatment. UV sterilization is very effective to combat microbial contamination in wastewater. UV wastewater sterilization has become a popular trend. As an alternative to chlorination, UV water treatment is considered to be a safer, more cost-effective, and environment-friendly method.
How UV Wastewater Treatment Works
In UV water sterilization, the equipment uses one or multiple UV lamps to release ultraviolet light with a wavelength of 253.7 nanometers to sterilize bacteria, viruses, molds, algae and other microorganisms. UV ray will directly damage the microorganisms’ DNA. DNA plays an important role in the functioning and reproduction of any organism. Destruction of the DNA prevents the organism from being active and reproducing, and ultimately leads to the death of the organism. UV ray can effectively destroy almost all harmful microorganisms, such as E. coli, salmonella, Giardia, etc., making it an ideal choice for wastewater treatment.
UV-lamps on test run. Used for sterilizing water.
Comparison between UV and Chlorine
Uncontrolled release of chlorinated compounds into the environment is a global problem. Trihalomethanes and other toxic by-products of chlorination of water are known to cause cancer. If used in gardening, these carcinogens can get into subsoil and groundwater. When such groundwater is pumped out and used for drinking, carcinogens within the water will pose health risks. Chlorinated water with a chlorine concentration greater than 5 mg/l will cause serious damage to most plants. Therefore, if used for gardening or landscaping, chlorinated water needs to be dechlorinated first.
UV domestic wastewater treatment is a natural, chemical-free process that does not produce trihalomethanes or other carcinogens. In addition, it is effective for killing certain chlorine-tolerant protozoa, such as Giardia and Cryptosporidium. Chlorination treatment has no effect on these protozoa, but UV treatment can effectively kill them.
Advantages of UV Sterilization
1. Natural
UV radiation is natural and effective for sterilization. From the use of sunshine to dry clothes in our daily life to a wide range of applications, UV is widely applied in many industries.
2. Effective
According to research, all microorganisms known to date are sensitive to UV light. UV radiation has a highly effective killing effect on harmful microorganisms.
3. Environment-friendly
Unlike chlorination that produces harmful by-products in its sterilization process, UV domestic wastewater treatment does not produce any toxic by-products.
4. Quick Effect
UV water treatment belongs to contact purification methods. The treatment process will be completed in an instant.
5. Convenient
The chlorination process of water will go through several stages, including procurement, storage, dilution, mixing, etc. UV wastewater sterilization needs no chemicals and only requires very little equipment maintenance.
6. Economical
The use of chlorination requires the purchase of expensive sodium hypochlorite or liquid chlorine. And thus, its operating costs will be much higher than UV sterilization. UV wastewater treatment requires very low economic expense. In most cases, UV wastewater sterilization will pay for themselves in less than two years’ time.
7. Safe
In the process of water chlorination, leakage of chlorine may result in burns, permanent vision damage, or lung damage. UV wastewater treatment does not pose any safety risks since no chemicals is used.
8. Easy to maintain
Applying UV wastewater treatment requires only the control of the flow rate of the water to be treated and the maintenance of UV lamps. During the UV sterilization process, there will be sediment in the wastewater attached to the quartz sleeve outside the UV lamps. Therefore, it is only necessary to check whether the quartz sleeve needs to be cleaned, and whether certain UV lamps have reached their service life and need to be replaced after the equipment works for a certain period of time. Our products come with an Automatic Cleaning System to ease the maintenance work. And the failure of UV lamps will be noticed by the system.
Advantages of Buying Directly from a Manufacturer
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