PAC is widely used as flocculating agent in water treatment process.The PAC liquid production facility of our-Waterworks is mainly composed of two dissolving tanks and two storage tanks.Each tank is equipped with an electric mix-er and a liquid level detector.The PACliquid dosing equipment is three diaphragm metering pumps,and the working mode of the pumps is dual use and one standby,Pump 2 also serves as a backup pump for Pump 1 and Pump 3.The specific process principle is:the solid powder of PAC is added to the dissolving tank,then the highly concentrated pharmaceutical liquid enters the storage tank and is diluted by adding more water.The diluted reagent is added to the corresponding fold-ing plate reaction tank through the pumps.Because the process flow of preparation and dosing of PAC liquid in the early time could not meet the requirements of the production and operation of ourWaterworks,and the degree of production au-tomation was low,so we reformed the relevant process flow and control program recently,and achieved good results.
PACprocess flowagentdilution preparationagent solution feedingautomatic control
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