Application Fields

1. Municipal Sewage Treatment

   Sludge dewatering (plate-and-frame filter press, belt filter press, centrifugal dewatering); flocculation and coagulation in primary and secondary sedimentation tanks.

2. Industrial Wastewater Treatment

   Papermaking wastewater, printing & dyeing wastewater, food processing wastewater, petrochemical wastewater, mining wastewater.

3. Papermaking Industry

   Retention and drainage aid; white water recovery.

4. Textile Printing & Dyeing

   Decolorization and flocculation of dyeing wastewater.

5. Other Fields

   Treatment of oilfield produced water; purification of high-turbidity raw water.

Usage Instructions

1. Dilution Recommendation: The ultra-high viscosity product is difficult to add directly. It is recommended to dilute with clean fresh water to a concentration of 0.1%–0.5% before dosing.

2. Dosing Sequence: Add inorganic coagulant (e.g. PAC) first under stirring, then add diluted PolyDADMAC solution.

3. Dosage: Generally 1–20 mg/L (calculated on solid content) depending on water quality. Optimal dosage shall be confirmed via jar tests.

4. Mixing Conditions: Medium-speed stirring (100–200 rpm) for 1–2 minutes. Avoid long-time high-shear stirring which may break molecular chains.