Closed-loop water system for LDPE plastic recycling — recovering and reusing wash water to cut fresh-water demand, effluent and operating cost.
CFD, P&ID, SCADA and commissioning for critical water treatment plants.
Plant layouts, piping isometrics and construction-ready engineering drawings.
Flow, mixing and thermal CFD across treatment and process equipment.
Full mechanical, physico-chemical, biological and sludge equipment range.
An LDPE (low-density polyethylene) recycling facility required a closed water loop system to minimise freshwater consumption and wastewater discharge during plastic washing and pelletizing operations.
Complete closed water loop system designed specifically for LDPE recycling wash water.
Rotary drum screens and lamella clarifiers to remove plastic fines and contaminants.
Advanced treatment enabling 92% water recovery for reuse in washing operations.
System designed to eliminate wastewater discharge through complete water recovery.
92% of process water recovered and reused.
No liquid wastewater discharge from the facility.
70% reduction in freshwater purchase costs.
Significantly reduced environmental footprint.
Food and beverage manufacturing generates high-strength wastewater containing organic matter, fats, oils, sugars, and suspended solids. Our treatment trains combine screening, dissolved air flotation for fat recovery, biological oxidation for dissolved organics, and tertiary polishing to meet discharge consent or enable water reuse. Each system is designed around your specific product mix and seasonal production variations.
Removes large solids and protects downstream pumps and biological systems from damage.
DAF systems recover valuable fats for rendering while reducing organic loading to biological stages.
Activated sludge, MBBR, or SBR processes remove dissolved sugars and organic compounds.
Tertiary filtration and UV enable safe recycling of process water for equipment washdown.
| COD Range | 1,000 – 10,000 mg/L (product dependent) |
| BOD Range | 500 – 5,000 mg/L |
| TSS Range | 200 – 3,000 mg/L |
| O&G Range | 50 – 800 mg/L |
| pH Range | 4.0 – 10.0 (cleaning cycle influence) |
| Temperature | 10 – 45°C (hot process water influence) |
| HRT Biological | 12 – 36 hours |
| Sludge Yield | 0.5 – 0.9 kg DS/kg COD removed |
HACCP-aligned design with food-grade materials and hygienic equipment selection.
Effluent engineered to meet trade effluent consent limits including BOD, TSS, and O&G.
Recovered protein, fat, and fibre fractions can offset treatment costs.
Contact us to discuss your wastewater treatment requirements.
Our expertise spans multiple industries with sector-specific water treatment solutions.