Henan Guoqing Environmental Protection Technology Co., Ltd
Demineralized Water Unit
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The Demineralized Water Unit, as its name suggests, is a device that reduces water hardness by removing calcium and magnesium ions. It employs ion-exchange technology, using cation exchange to pass the raw water through a cation exchanger, thereby eliminating calcium, magnesium, and other ions from the water.
Classification：
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Product Overview
Natural surface water and groundwater contain significant amounts of salts formed by calcium and magnesium ions. If used directly as feedwater, these salts can readily precipitate as scale on the heated surfaces of equipment, reducing efficiency, increasing energy losses, diminishing output, and shortening equipment life; in severe cases, this poses risks to both equipment integrity and personnel safety. Therefore, it is essential to soften the feedwater.
The Demineralized Water Unit, as its name suggests, is a device that reduces water hardness by removing calcium and magnesium ions. It employs ion-exchange technology, using cation exchange to pass the raw water through a cation exchanger, thereby eliminating calcium, magnesium, and other ions from the water.
The system comprises three components: the ion-exchange section, the salt-regeneration section, and the control section.
Process Principle
When raw water containing hardness ions passes through the resin bed in the exchanger, the calcium and magnesium ions in the water displace the sodium ions adsorbed by the resin. The resin retains the calcium and magnesium ions, while sodium ions are released into the water, thereby producing softened water. Once the resin has absorbed a certain amount of calcium and magnesium ions, it must be regenerated. During regeneration, brine from the salt tank is used to flush the resin bed, displacing the hardness ions from the resin and carrying them away with the regeneration waste stream, thus restoring the resin’s softening and ion-exchange capacity.
Application areas
In the process of demineralization, the Demineralized Water Unit cannot reduce the total salt content in the water; it is primarily used for industrial or domestic hardness removal and water softening.
① Suitable for pre-treatment of direct drinking water in communities, schools, factories, and other institutions;
② Can be used for the pretreatment of bottled water, mineral water, and other types of packaged water;
③ Process water for the light textile and chemical industries, including chemical circulating water and purified water used in the manufacture of chemical products;
④ Water used in the food and beverage industry, including purified drinking water, beverages, beer, baijiu, health supplements, and other applications;
⑤ Water used in the electronics industry for rinsing electronic components such as integrated circuits, silicon wafers, and display tubes.
Model Description
1. Product series; 2. Softening; 3. Tank diameter
Product Features
- Highly automated, the water softener can automatically regenerate on a timed schedule and at a set flow rate.
- Reliable performance, continuous operation, and stable effluent water quality.
- A fiberglass-reinforced resin exchange tank, equipped with a lead-free brass or PPO control valve body and a PE salt tank.
- A resin exchange tank made of carbon steel with a rubber lining, equipped with a diaphragm‑type or PVC‑material control valve assembly, and a salt tank or brine well constructed from polyethylene.
- Low operating costs: Water consumption is less than 5–10% of the produced water volume (subject to the raw water hardness); regenerating 1 liter of resin requires approximately 100–160 grams of salt.
- Flexible configuration allows you to select dual‑tank or multi‑tank systems, as well as time‑based or flow‑based control modes, and operating strategies such as simultaneous regeneration or alternating regeneration.
- The entire system is rationally designed, meticulously configured, and delivers high softening efficiency.
Technical Specifications
Demineralized Water Unit
Inlet conditions
Influent: Turbidity ≤ 3–5 NTU (if turbidity is high, preliminary clarification is required).
<12 mmol/L (when the raw water hardness exceeds 7–8 mmol/L, a two-stage softening process should be employed); effluent: 0.03 mmol/L (3 mg/L)
Work environment parameters
Operating temperature: 5–40°C (customizable for special temperatures) Operating pressure: 0.25–0.5 MPa
Operating parameters
Operating mode: Pressure type
Operating mode: Water flows from top to bottom.
Filtration flow rate: 20–30 m/h
Backwash flow rate: 15–20 m/h
Backwash flow rate: 10–20 m/h
Regeneration flow rate: 2–4 m/h (regeneration concentration 5–8%)
Regeneration method: counter-current or co-current regeneration
Regeneration time: 60–120 min;
Anti‑wash swelling rate: 30–50%.
Body material
Stainless steel with rubber lining, carbon steel with rubber lining, or fiberglass-reinforced plastic material
Work style
Manual, electric, pneumatic, and multi-way valve heads
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WhatsApp：8618737959990
Email：gqhbtop@gmail.com
Manager Liu：+8618737959990
Manager Yang：+8615037920517
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