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Glass Circulating Water Treatment System Process | Hintan-Tech Solutions
April 22, 2026
During glass processing, large amounts of water are used for cooling, cleaning, edge grinding, drilling, and other operations. This generates wastewater containing glass powder, oil, COD, SS, and other pollutants. A glass circulating water treatment system purifies and recycles the wastewater through physical, chemical, and automated control methods, saving water resources while meeting environmental discharge standards.
I. Core Process of the Glass Circulating Water Treatment System
1. Raw Water Collection & Pre‑treatment
Wastewater from edge grinding and washing first flows into an equalization tank, where a screen or sedimentation tank removes large suspended particles.
2. Fully Automatic Dosing System
Based on PLC control and ultrasonic level measurement, a low‑salt coagulant (replacing traditional polyaluminum chloride) is automatically dosed to efficiently remove suspended solids, COD, and part of the salinity, while reducing corrosion risks to equipment and pipes.
3. Vertical High‑Speed Sedimentation
The equipment adopts a vertical flow high‑speed sedimentation design – small footprint, large water output, continuous discharge, and improved treatment efficiency.
4. Automatic Backwashing & Tank Bottom Flushing
The system automatically backwashes when shut down to prevent internal clogging. The bottom flushing design avoids glass powder accumulation, reducing manual cleaning frequency.
5. Clean Water Circulation & Water Quality Monitoring
High‑precision pH and salinity detectors continuously monitor water quality to ensure stable reuse water. If the pH exceeds the limit, the system automatically alarms and adjusts the chemical dosage.
6. Efficient Sludge Dewatering
The filter press is equipped with automatic plate shifting + vibration function, together with a lifting frame, significantly reducing labor costs. The resulting sludge cake has low moisture content, facilitating solid waste disposal.
II. Hintan‑Tech Comprehensive Solutions for Glass Factories
Hintan‑Tech provides one‑stop water treatment services – from design and manufacturing to operation and maintenance – covering the following key applications:
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Glass edging & washing circulating water system – fully automatic PLC control, operating cost as low as 0.08 RMB/ton.
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Low‑salt precipitation technology – developed together with chemical manufacturers, ensuring effluent quality while reducing corrosion.
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Pure water & ultrapure water systems – suitable for Low‑E washers, silver mirror coating, and other high‑standard processes; resistivity ≥15 MΩ·cm, SiO₂ <10 ppb.
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Constant pressure water supply system – variable frequency control, energy saving and stable.
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Ink wastewater treatment system – treats high‑COD, high‑color wastewater separately, reducing hazardous waste disposal costs.
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Frosting wastewater treatment system – adjusts pH and removes fluorine to meet discharge standards.
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Concentrate water reuse & zero‑discharge solutions.
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Remote SMS alarm + IoT monitoring.
III. Technical Advantages & Economic Operation
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⚡ Fully automatic PLC control with touch screen HMI and fault self‑diagnosis
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📉 Operating cost as low as 0.08 RMB/ton through scientific dosing proportioning
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📱 Automatic SMS alarm when chemical tank is low or pH exceeds limit (network‑capable)
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🔧 Internal components made of PP or 304 stainless steel, external anti‑corrosion coating – long service life
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🌀 Swirl flow design removes engine oil / lubricating oil from bearings
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🏭 Compact equipment; for capacities below 30 m³/h, no need to excavate raw water tank or clean water tank
IV. Typical Applications & Treatment Results
Hintan‑Tech glass circulating water systems have been operating stably in hundreds of glass factories worldwide, covering architectural glass, bathroom glass, home appliance glass, kitchenware glass, electronic glass, and specialty glass. Key treatment indicators:
| Parameter | Before Treatment | After Treatment |
|---|---|---|
| pH | 6–9 | stable 6.5–8.5 |
| SS (mg/L) | <50 | <10 |
| COD (mg/L) | <150 | greatly reduced |
| Color (times) | <50 | clear, <10 |
In addition, low‑salt precipitation and concentrate reuse significantly reduce scaling and equipment corrosion, extending the service life of core machines such as washers and edgers.
V. Why Choose Hintan‑Tech?
From single filter presses to hundred‑ton fully automatic circulating systems, Hintan‑Tech offers complete process design, equipment manufacturing, installation, commissioning, and after‑sales training. All systems integrate advanced technologies – ultrasonic level control, vertical high‑speed sedimentation, automatic backwashing, low‑salt formulations – helping glass factories easily pass environmental inspections while reducing the cost per ton of treated water. Whether for a new plant or an old line retrofit, Hintan‑Tech delivers tailored, energy‑saving, and environmentally friendly solutions.
