Introduction:
Waste incineration plants face challenges in treating circulating cooling water due to high suspended solids, COD, and hardness levels. The application of PolyCera Hydro100 ultrafiltration membrane offers a pioneering solution for effectively softening water and removing turbidity. This pilot test demonstrates the membrane’s efficacy in improving water quality and operational efficiency.
Background:
Circulating cooling water in waste incineration plants often contains high suspended solids, COD, and hardness, necessitating effective treatment methods. The PolyCera Hydro100 ultrafiltration (UF) membrane addresses these challenges, enabling softening and turbidity removal even in high-pH (pH ³12) environments.
Process Flow:
The treatment process involves several stages, including softening and turbidity removal, as depicted in the following process flow diagrams:
Operation Results:
The pilot test yielded promising results:
- The PolyCera Hydro UF membrane effectively removed suspended solids, turbidity, and some colloids from the circulating cooling water.
- Water quality test results demonstrate significant reductions in calcium, magnesium, carbonate, bicarbonate, and silicon dioxide levels, achieving removal rates exceeding 90% for key parameters.
- The membrane system maintained stable flux at 80 LMH under challenging conditions of high suspended solids, COD, and pH in the influent.
| Raw water quality | Produced water quality | Removal rate | |
|---|---|---|---|
|
Ca, mg/L |
268 |
22 |
92% |
|
Mg, mg/L |
128 |
0.03 |
100% |
|
Carbonate, mg/L |
<5 |
56 |
|
|
Bicarbonate, mg/L |
592 |
<5 |
99% |
|
Silicon dioxide, mg/L |
13.9 |
2.2 |
84% |
|
NTU |
3.5 |
＜0.1 |
|
|
CODCr, mg/L |
110 |
52 |
53% |
Value Proposition:
The use of PolyCera Hydro UF membrane offers several key advantages:
- Effective Contaminant Removal: The membrane effectively removes suspended solids, turbidity, and colloidal particles, improving water quality and reducing the burden on downstream RO processes.
- Stable Flux Performance: The membrane maintains stable flux even under challenging conditions, ensuring consistent and reliable operation.
- Enhanced Water Softening: The membrane achieves significant reductions in calcium, magnesium, carbonate, and bicarbonate levels, contributing to improved water softening efficiency.
- Reduced Environmental Impact: By removing contaminants without the need for additional chemicals or intensive treatment processes, the membrane system reduces environmental impact and operating costs.
Conclusion:
The pilot test demonstrates the effectiveness of PolyCera Hydro100 UF membrane in enhancing softening and turbidity removal of circulating cooling water in waste incineration plants. By achieving significant reductions in key contaminants and maintaining stable flux performance, the membrane offers a sustainable and efficient solution for improving water quality and operational efficiency.
Keywords
Circulating cooling water, Waste incineration plant, PolyCera Hydro100 ultrafiltration membrane, Softening, Turbidity removal, Water quality improvement.
