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What is PAC chemical? Applications in water treatment

  • 14/05/2021
  • Publish at: 16:37:04
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For those in the industry will know what a PAC is? Quite familiar to people in the industrial water treatment industry, but still unfamiliar to many. So, through the article we will introduce you the most in detail what is Poly Aluminum Chloride and its application in water treatment.

What is PAC Chemicals?

PAC is a deposition aid, flocculation in the treatment of domestic water, wastewater and pond water, and in aquaculture with another name is Poly Alumium Chloride, effectively increasing the flocculation of dirt in water. help clean water to protect the environment with aluminum content from 28 to 32%.

How to use PAC in water treatment

  • Mix PAC into solution according to the dosage specified
  • Put diluted solution into dirty water source to be treated according to the formula 1 - 10g / m3 of domestic water, from 20 - 200g / m3 of industrial wastewater.
  • According to the test formula, the exact dosage used for the treatment will be measured. After the clear gas settles, to be able to use it should be sterilized and boiled. The common dosage for river, lake, and pond water is: 1 - 10 g / m3 of water depending on the turbidity
  • For aquaculture water sources, PACs should be mixed into a 10 - 20% solution and then put into the treated water and stir to allow clarification.

PAC's strengths compared to other water treatment agents

  • The internal deposition process will create Al polymer particles with a much stronger electrical charge than other water treatment agents and the Al polymer particle size is also much larger than Al3 +, which is more favorable in water treatment
  • The pH PAC region is approximately 2 times stronger than normal alum
  • The maximum amount of toxicity compared with ordinary aluminum alum due to the absence of SO4
  • Better cleaning of heavy metals in water, 5 times higher settling capacity and faster flocculation time.

PAC application

PAC has almost no effect on the pH of the treatment water source, so it will save chemicals and other equipment such as barrels, metering pumps, reduce the amount of sediment, give clearer water after sedimentation, for quality. water is higher.

  • Use to clean water directly from rivers, canals, lakes, filter domestic water for people, water supply stations
  • Used to treat industrial wastewater from companies, factories, factories before being discharged into a special environment such as ceramic, dyeing, and metallurgical industries. braziers,...
  • Use in aquaculture water treatment: commonly used in shrimp and fish farming.

Note when using PAC

  • With the amount of 1 - 10g PAC / m3 water can clean the water source, using over grams per unit of water will cause the stabilization of flocculation particles.
  • Excessive PACs will corrode in areas that are residue or sludge you leave
  • PACs should be stored in a dry place, away from direct sunlight.

Where to find the best PAC chemicals

 In the current market, 30% PACs, imported from Taiwan, India, .. meet the needs of users, but with the advantages of water quality and better price than PAC 31% Viet Tri Being provided by Vietchem will help you achieve higher efficiency and more cost savings.

In addition, coming to Vietchem, you will also be consulted on solutions and effective use instructions, and yet there will be training sessions for staff on water treatment and testing to check the dosage to use standard for the amount of water to be treated. is a solution to save materials and labor in the partner company.

Above is the information that helps to answer what PAC is to customers, hopefully through the article, it will help those in the profession and those who are new to PAC will better understand and use them reasonably, save money as well as safety.

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