NNQ type non top pressure countercurrent regeneration sodium ion exchanger

When the total hardness of the inlet water is less than 8.0mmol/L, the NNQ type non top pressure countercurrent regeneration sodium ion exchanger can reduce the total hardness of the water to below 0.03mmol/L after treatment by the first stage sodium ion exchanger, and can be used as feed water for low-pressure boilers. When dealing with water with high total hardness or when requiring low hardness of the effluent, a two-stage series softening method can be used.

Working principle

When raw water containing calcium and magnesium ions flows through the sodium ion exchange layer in the ion exchanger, the calcium and magnesium ions in the water are replaced by the sodium ions in the exchange agent, thereby converting the calcium and magnesium salts that may form scale in the boiler into soluble sodium salts and softening the water.

The sodium ions on the exchange agent are gradually replaced by calcium and magnesium ions. After a period of use, calcium and magnesium ions will leak out. When the hardness of the effluent reaches the specified value, the operation will stop and regeneration will be carried out.

During regeneration, 5-8% saline solution is passed through the exchange layer from bottom to top, and the sodium ions in the salt solution replace the calcium and magnesium ions on the exchange agent, allowing the exchange agent to be regenerated and restore its exchange capacity.

Scope of use

This type of sodium ion exchanger device is widely used in boiler water supply, softening of various heat exchanger make-up water, softening treatment of circulating cooling water in air conditioning systems, printing and dyeing, food industry water, softening of high hardness drinking water, softening of domestic hot water raw water, and pretreatment of domestic direct drinking water devices.