Polyacrylamide treatment of sand washing wastewater
Sand washing wastewater refers to wastewater containing suspended matter, heavy metals and other pollutants generated by the washing of sand and gravel in construction sites, quarries, mines and other places. This kind of wastewater will have a great impact on the environment and human health. In order to solve this problem, polyacrylamide has become a commonly used method for treating sand washing wastewater.
Principle of polyacrylamide
Polyacrylamide (Polyacrylamide, PAM) is a polymer compound with multiple properties such as adsorption, precipitation, coagulation, and rheology. When treating sand washing wastewater, polyacrylamide gathers suspended matter, heavy metals and other pollutants in the wastewater together through adsorption, coagulation and other effects to form larger particles, thereby achieving the purpose of purifying water quality.
Application of polyacrylamide
Polyacrylamide is widely used in various fields, including textiles, papermaking, petroleum, medicine, environmental protection, etc. In the treatment of sand washing wastewater, polyacrylamide is generally mixed by adding drugs. After mixing it with wastewater, it is finally purified through precipitation, filtration and other steps.
Advantages of polyacrylamide
Compared with traditional treatment methods, polyacrylamide has the following advantages:
1. Good treatment effect: polyacrylamide can effectively gather pollutants such as suspended solids and heavy metals in wastewater to form larger particles, thereby achieving the purpose of purifying water quality.
2. Easy operation: The treatment method of polyacrylamide is relatively simple, does not require complex equipment and technology, and is relatively convenient to operate.
3. Low cost: The price of polyacrylamide is relatively low, and the cost is relatively low.
Disadvantages of polyacrylamide
Polyacrylamide also has some disadvantages, such as:
1. It will cause certain pollution: During the treatment process, polyacrylamide will combine with pollutants in the wastewater to form precipitates, which also need to be treated, otherwise it will cause pollution to the environment.
2. Need to be replaced regularly: polyacrylamide will be adsorbed and combined with pollutants during the treatment process, and needs to be replaced regularly, otherwise it will affect the treatment effect.
In general, polyacrylamide, as a method for treating sand washing wastewater, has the advantages of good treatment effect and easy operation, but it is also necessary to pay attention to the pollution and regular replacement that may be caused.