Water Treatment System For Plastic Recycling Plants

Shown in this video is our water treatment system installed for use with a 2 ton per hour PET bottle washing line for our customer in Bali, Indonesia. This water treatment for plastic recycling machines cleans the water through the function of air floating tank and flocculating agent. It is widely used in waste plastic washing plant to filter dirty water for reuse.

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Frequently Asked Questions

How does this water treatment system work?

The system cleans dirty wash water through an air floating tank combined with a flocculating agent. Air flotation lifts suspended contaminants — inks, dirt, label residue, and process chemicals — to the surface for removal, while the flocculating agent helps particles cluster for easier separation. The filtered water is then returned to the washing plant for reuse, closing the water loop.

What is the difference between this and a DAF system?

Dissolved Air Flotation (DAF) is a related technology that dissolves compressed air into wastewater and releases it as micro-bubbles for flotation — see our DAF water treatment system for details. Both approaches recover wash water for reuse; our engineers will recommend the right configuration based on your water volume, contamination load, and discharge requirements.

Which recycling lines can it serve?

The system shown serves a 2 ton per hour PET bottle washing line for a customer in Bali, Indonesia, but it is widely used across waste plastic washing plants. It pairs with PET bottle recycling, film washing lines, and rigid plastic recycling lines — any operation that consumes large volumes of wash water and wants to filter it for reuse.

Why treat wash water instead of discharging it?

Washing plastic generates heavily contaminated water; discharging it means paying for fresh water constantly plus facing discharge regulations. Treating and reusing wash water reduces your overall water bill, cuts discharge volumes, and makes the operation more eco-friendly — increasingly important for recyclers serving sustainability-focused buyers and meeting local environmental rules.

How is the system sized for my plant?

Sizing depends on your washing line’s water consumption and contamination load. The Bali installation handles a 2 ton per hour PET bottle washing line, and systems can be configured for larger or smaller plants. Share your line capacity and wash-water volume with our team, and we will size the air floating tank and flocculating agent dosing to match your operation.

What maintenance does the system require?

Routine maintenance covers flocculating agent dosing, regular removal of floated sludge, and cleaning of the air floating tank. Monitoring water quality keeps the system effective and protects downstream washing equipment. ASG supplies consumables and technical support, and all recycling machines come with a 1 year limited warranty.

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