Application of Hengfeng Polyacrylamide in Glass Factory Wastewater Treatment and Reuse

Glass manufacturing is a water-intensive process, involving cooling, washing, polishing, and dust suppression. These operations generate large volumes of wastewater containing suspended solids, fine glass particles, silica, polishing agents, and trace heavy metals. If not properly treated, such wastewater can lead to environmental pollution and resource waste.

Hengfeng Polyacrylamide (PAM), as an efficient flocculant, plays a crucial role in the clarification and recycling of glass factory wastewater.

Characteristics of Glass Factory Wastewater

Glass factory wastewater is typically characterized by:

High turbidity due to fine suspended solids.

Silica-rich particles from cutting and polishing processes.

Alkalinity from chemical additives used in production.

Refractory fine particles that are difficult to settle naturally.

These characteristics make traditional sedimentation slow and inefficient.

How Hengfeng Polyacrylamide Works in Wastewater Treatment

Hengfeng Polyacrylamide is a high-molecular-weight polymer that promotes flocculation through particle bridging and charge neutralization. When added to glass factory wastewater, PAM quickly binds fine particles into larger, denser flocs, which settle or float more rapidly during treatment.

Typical treatment steps include:

pH Adjustment – Optimize conditions for flocculation.

PAM Dosing – Select anionic, cationic, or nonionic types based on water quality.

Rapid Mixing – Disperse PAM evenly for effective particle binding.

Sedimentation or Dissolved Air Flotation (DAF) – Separate the clarified water from sludge.

Sludge Dewatering – Reduce moisture for easier disposal or recycling.

Benefits for Glass Factories

Improved Water Clarity – Removal of fine glass powder and silica.

Faster Sedimentation – Significantly reduces settling time compared to natural sedimentation.

Lower Chemical Consumption – Hengfeng PAM can be used alone or in combination with inorganic coagulants for optimized results.

Enabling Water Reuse – Treated water can be reused for cooling, washing, or dust suppression, reducing fresh water intake.

Compliance with Environmental Regulations – Ensures discharged water meets standards.

Case Example: Water Recycling in Glass Manufacturing

In a typical glass plant, PAM-assisted treatment can achieve turbidity removal rates above 95%, allowing the majority of process water to be recycled. This not only reduces operational costs but also minimizes the environmental footprint of production.

Choosing the Right Hengfeng PAM Product

The selection of the proper polyacrylamide type depends on:

Wastewater pH and composition.

Particle charge and size distribution.

Treatment system design (sedimentation, DAF, filtration).

For glass factories, anionic PAM is commonly used for suspended solids removal, while cationic PAM may be preferred if the wastewater contains high organic content from polishing agents.

By integrating polyacrylamide into the wastewater treatment process, glass manufacturers can significantly enhance treatment efficiency, achieve high-quality water recycling, and meet environmental sustainability goals. Jiangsu Hengfeng Fine Chemical Co., Ltd. offers a range of PAM products tailored to the specific needs of the glass industry, ensuring cost-effective and environmentally friendly solutions for wastewater reuse.