A new electrochemical water treatment device and its important parameters
In recent years,electrochemical water treatment equipment has received great attention because of its environmental compatibility and versatility.In view of the shortcomings of the existing electrochemical e-quipment,a new electrochemical water treatment equipment with external descaling scraper is proposed,which does not occupy too much space inside the electrolysis room due to the external placement of the desca-ling scraper,and novel drum-type design can simultaneously complete the scale removal and dehydration work,so as to ensure the electrolytic reaction while reducing the waste of water resources.In order to verify the effect of wastewater treatment with different parameters,a small electrolyser experimental platform was built based on the prototype of anode and cathode electrolytic zone of the equipment,and the single flow and circulation flow experiments were completed to test the hardness and COD removal effect respectively.Through comprehensive comparison,it is found that when the current density is 10.88 mA/cm2,the circulat-ing water flow rate is 10 L/h,and the electrode plate spacing is 5 mm,the best water treatment effect is a-chieved.Under these conditions,the hardness removal rate of circulating water reaches 19.6％～24.46％,the scale amount per unit area per unit time is 13.7 g/(h·m2),the energy consumption per unit scale weight is as low as 0.16 kWh/g,the COD concentration is reduced from the initial 106 mg/L to 18.8 mg/L,and the total removal rate is as high as 82.26％.In general,the electrochemical system has a good effect of descaling and degrading organic matter,which can provide certain reference and guidance for the future research and de-velopment of electrochemical equipment or in-depth research on electrochemical theory.
electrochemical water treatmentwater treatment equipmentdescalinginfluence pa-rameter
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