What are water treatment chemicals?

Water treatment chemicals are the common names of chemicals used to clean water for daily life, production, avoid environmental pollution, etc. In addition to mechanical, physical, and microbiological methods of water purification, water treatment chemicals are used. , ... using chemical methods (chemicals) contribute to thoroughly clean up wastewater.

To use these chemicals effectively, you first need to determine the level of pollution of the water source and choose an appropriate chemical. So what chemicals are used in the wastewater treatment process?

Common waste water treatment chemicals

1. Aluminum sulfate alum (Al2(SO4)3.18H2O)

This is one of the most commonly used chemicals. Alum aluminum sulfate will create a hydrolysis reaction, coagulating the wastes. Then just filter out these flocculation, the source of wastewater will be cleaner.

To maximize the effects of alum aluminum sulfate, you should use them for wastewater with a pH of about 5.5 ~ 7.5, water temperature from 20 ~ 400oC.

Attention should be paid to the ionic components present in the water, organic matter, and the dosage of alum so that the water is clean and does not cause secondary water pollution.

2. Poly Aluminum Chloride (PAC) sedimentation auxiliaries

It is a yellow chemical, a transparent solution with strong hygroscopic effect. In wastewater treatment, PAC chemicals have the following effects:

++ Used before wastewater enters the settling tank, separating suspended impurities, color adsorption, coal, smoke, ...

++ Bringing high efficiency when treating water contaminated with oil, grease, water with high color (textile dyeing, paper, ...)

The use content of wastewater treatment chemicals - PAC is low, so the amount of waste residue will be less when using other chemicals.

3. Decolorizing chemicals

- This is a type of quaternary cationic polymer wastewater treatment compound, which has the effect of flocculating to reduce COD (ie, reducing the amount of oxygen needed to oxygenate all the chemicals in the water).

- This chemical is often used to treat wastewater in the textile, dyeing, paper, ...

4. Deodorant chemicals

- Deodorization of wastewater is still one of the dilemmas.

- Chemicals commonly used to eliminate odors: Javen water, Esol, Bio Steme 201,...

However, chemical measures are not very effective in this regard, the current trend is to use microorganisms to solve the unpleasant odor of wastewater.

5. Disinfectant chemicals

Disinfection is the final step in the wastewater treatment process. In this step, it will mainly remove the remaining harmful elements in the water such as bacteria, viruses, fungi, ...

- Chemicals commonly used: Javen water, Chlorine, Chlorine,...

Above are the 5 most common types of wastewater treatment chemicals. Hope the information provided in this article will help you to solve the problem easier.