Experimental study on effect of micro-electrolysis technology on scale reduction and sterilization of circulating cooling water in condenser station
Using micro-electrolysis technology to treat circulating cooling water of rotary condenser station,the influence of micro-electrolytic current density and hydraulic residence time(HRT)on hardness and steriliza-tion effect of cooling water was investigated.The results showed that,the reduction rate of water hardness was positively correlated with microelectrolytic current density and HRT.When the HRT increased from 10 min to 20 min,the reduction rate of circulating water hardness increased from 1.39％to 2.77％.When the HRT was 10 min,the current density increased from 0.02 to 0.3 mA/cm2,the hardness of the circulating water was increased from 0.2％to 6.9％.When the HRT was 15 min,the current density reached 0.43 mA/cm2,the sterilizing rate reached 99.55％.The experiment indicated that,sterilizing rate increased with the prolonging of the HRT or the increasing of the current density.In industrial application,proper water hardness reduction rate and sterilizing effect could be obtained through adjusting electricity and voltage of the electrode,and adjusting HRT of the water sample in the equipment at the same time.
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