Polyelectrolytes are commonly used in dewatering processes as flocculants to increase the efficiency of the separation of water from suspended solids. Polyelectrolytes are long-chain polymers with charged groups that can interact with charged particles, causing them to aggregate and settle more easily.

In dewatering, polyelectrolytes are added to the slurry of solids and water to neutralize the surface charges on the solids and create larger, heavier particles that can settle more quickly. The polyelectrolytes can also create a bridging effect between the particles, causing them to form larger flocs that settle more easily.

There are many different types of polyelectrolytes available for dewatering applications, including cationic, anionic, and nonionic varieties. The choice of polyelectrolyte will depend on the nature of the solids being dewatered and the specific requirements of the process.

Overall, the use of polyelectrolytes in dewatering can lead to significant improvements in process efficiency and cost savings, by reducing the amount of water that needs to be treated and increasing the recovery of valuable solids.


Polymer jar tests, also known as flocculation jar tests, are a laboratory method used to determine the optimum dosage of a flocculant for a specific water sample.

The process involves taking a water sample and adding different amounts of a flocculant to it. The mixture is then placed in a series of jars and stirred to simulate the mixing and settling process that occurs in a water treatment plant. The jars are allowed to settle for a specific amount of time, and the amount of sediment or particles that settle to the bottom of each jar is measured.

By analysing the results, water treatment professionals can determine the optimal dosage of the flocculant needed to remove the maximum amount of impurities from the water sample. This information is then used to design and optimize the treatment process for the larger water treatment plant.

Polymer jar tests are commonly used in the water treatment industry for both potable water and wastewater treatment, and are an important tool for ensuring the safe and effective treatment of our water resources.

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