Complete Chemical Dosing Units by TNW Co., Ltd: Special PAM Dosing Equipment for Wastewater Treatment

Complete chemical dosing Units by TNW Co., Ltd: Special PAM Dosing Equipment for Wastewater Treatment

For wastewater treatment and sludge dewatering, Polyacrylamide (PAM) flocculant performance heavily relies on reliable dosing equipment. Many facilities cut costs with simple two-tank mixers and manual feeding, which cause frequent issues: caked undissolved PAM, inconsistent solution concentration, wasted chemicals, unstable flocculation and heavy labor costs. Cheap generic mixers lack design for PAM’s hygroscopic, slow-curing properties.

TNW Co., Ltd develops integrated full-set PAM-specific chemical dosing units optimized for wastewater flocculation and sludge dewatering. The three-chamber all-in-one system automates powder feeding, wet dissolution, low-speed curing and precision metering. It pairs perfectly with screw presses and dissolved air flotation (DAF) units across municipal, printing, chemical, sand washing and livestock wastewater projects, delivering higher PAM utilization and stability than basic dosing tanks.

1. Pre-assembled Turnkey Unit for Fast Commissioning

Each complete unit is fully assembled and tested before delivery, containing sealed powder silo, variable-frequency spiral feeder, pre-wetting dissolution tank, curing tank, buffer storage tank, PLC control cabinet, high-precision metering pumps and liquid-level interlock valves.

Frames are built with thick 304 stainless steel or anti-corrosion PP for dust and moisture resistance. On-site installation only requires water and power connections; calibration enables immediate operation without complex pipeline assembly. Compact dimensions suit retrofits and small cramped workshops.

2. PAM-Tailored Structure Eliminates Caking & Incomplete Dissolution

Direct dry PAM pouring causes clumps that waste chemical and damage pumps/pipes. TNW applies targeted anti-caking designs:

Atomized pre-wetting feeds moistened powder into the dissolver. Variable feeding speed locks water-to-powder ratio for stable 0.1%–0.3% solution density.

Two-stage stirring protects PAM molecular chains: medium-speed mixing disperses powder, while slow paddle stirring cures for 30–60 minutes to maximize flocculation activity. This cuts PAM consumption by over 20% vs standard mixers.

Step overflow separates dissolution, curing and storage chambers. Only fully activated liquid flows to the dosing buffer to guarantee consistent flocculation quality.

3. Intelligent Automatic Control Adapts to Fluctuating Wastewater Conditions

Multiple automatic regulation modes reduce manual labor and enable unattended running:

Flow proportional linkage: metering pump output adjusts automatically matching inlet sludge or wastewater flow.

Liquid-level auto preparation: the system starts mixing at low tank level and shuts off once full.

Remote monitoring support: connects to plant central control for real-time status viewing and parameter adjustment, ideal for large municipal and industrial parks.

Built-in safety alarms cover low powder, water shortage and pump overload to prevent component damage.

4. Wide Compatibility with TNW Core Treatment Equipment

This PAM dosing system matches full-process treatment workflows:

Municipal plants: pairs with screw press sludge dewaterers to stabilize low cake moisture and reduce transport loads.

Printing, chemical & electroplating lines: works with DAF units to remove oil, COD and suspended colloids.

Sand washing & mineral sites: doses anionic PAM for rapid mud-water separation and recycled process water.

Slaughter & livestock farms: flocculates manure sludge for screw press solid-liquid separation; dried cake can be processed into organic fertilizer.

Bundled packages of TNW dosing units + screw presses / DAF machines come pre-calibrated for seamless coordinated operation and faster project startup.

5. OEM Factory Supply & Reliable After-Sales Support

Unlike resellers selling loose separate parts, TNW Co., Ltd manufactures all components in-house with full pre-delivery water and material testing. Complete drawings, operation manuals and spare parts lists are supplied with every unit.

Professional technicians provide on-site installation, commissioning and operator training nationwide. Key electric, pump and feeding components carry full factory warranty with direct genuine spare part supply. Custom upgrades include 316 stainless steel for highly acidic/alkaline wastewater and heat insulation for low-temperature northern environments.

Conclusion

Under-dimensioned cheap dosing hardware creates hidden costs from wasted PAM, unplanned downtime and failed discharge compliance. TNW Co., Ltd’s dedicated full-set PAM chemical dosing units are engineered around real-world PAM dissolution requirements. Optimized mixing, accurate automated dosing and seamless pairing with screw press and DAF systems deliver long-term savings and stable effluent standards for new builds and facility retrofits. Free sludge sample testing and customized process proposals are available upon inquiry.