Plastic Valves and Flowmeters - GEMU - #5

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5 Product applications Plastic valves and flowmeters I Product applications Brackish water treatment and boron decontamination Brackish water treatment in a region of the Eastern Mediterranean. The amount of drinking water to be treated daily is 6,500 cubic metres. The boron content in the raw water is available as boric acid at an amount of 1.0 - 2.5 mg/ per litre. The boron content is reduced to less than 0.25 mg/per litre. The system includes various fi ltration stages, several ion exchangers with an additional stage for boron as well as a fi nal reverse osmosis process. GEMÜ 690 and 677 plastic diaphragm valves in PP in DN 25 - 100, GEMÜ 1435 positioners and butterfl y valves are used in the system. Treatment of leachate from a rubbish dump Treatment / detoxifi cation of leachate from a rubbish dump. The pre-treated raw water is treated in a three-stage reverse osmosis process to keep the fi ltration residues as low as possible. The system is PLC controlled and operates fully automatically under constant monitoring. If the limiting values are exceeded by scaling or fouling, the system is automatically turned off and cleaned by CIP equipment to reduce biofouling. The system is equipped with GEMÜ S660 and S670 SilverLine® plastic diaphragm valves with PVC-U valve bodies. Softening water for pharmaceuticals according to USP/EP The production of water for pharmaceuticals always consists of a series of treatment processes. The softening of the water is normally the fi rst step of the chain of treatment. It ensures that hardness forms such as calcium and magnesium are removed and the following processes are not infl uenced by them. In order to minimise contamination and the formation of a biofi lm as far as possible, the system illustrated is sanitised at regular intervals without using chemicals. This process takes place approx. once per week and is triggered fully automatically. GEMÜ 690 and 677 plastic diaphragm valves are used. The pneumatic valves are equipped with electrical position indicators. GEMÜ 850 variable area fl owmeters are also used.