Tandem Softening Systems
Softening: It is the removal of hardness in water caused by calcium and magnesium ions using cationic resin. Hard water causes calcification on the surfaces of steam cauldrons, heaters and hot water installations. This way their cross-section get narrower, important transfer losses and energy consumption occurs. AST Series tandem softening systems are designed for continuous soft water need of businesses.
All the control valves used in tandem softening systems do the service, regeneration and backwash processes automatically. The quartz, divinylbenzene based resin and linear fibre coated epoxy plated polyethylene tank that make up the system, all meet the world food norms. Polyethylene, buoy protected against overflow salt tank is included. Salt is used as regenerant. Water needed for the salty water solution is filled by control valve to the salt tank after each regeneration.
In tandem softening systems, with the "capacity full" signal from the capacity control system, the tank in service is carried to the regeneration while the second tank finishing its regeneration and waiting on stand-by moves to the service and the continuous soft water flow is derived. The tank starting regeneration goes through "Backwash", "Salting", "Slow rinse", "Rapid rinse" and "Salt tank filling" processes respectively. Afterwards it starts to wait ready on stand-by.
The systems are standard double tank and capacity controlled. If wanted they may be designed as hardness controlled.
In selecting tandem softening systems, our project engineers calculate the necessary resin amount according to the rate of flow, hardness degree and other parameters of your water. Salt, water and time losses in backwash are minimized by these sensitively calculated systems.