摘要
Abstract
To recognize the influence of bicarbonate alkalinity on desalination effect of electro - sorption, this article using the resurgent water of North district recycling plant of Urumqi High - teeh Zone as raw water, researches on desalination effect of electro - sorption equipment continuous operation under the different concentration of HCO3 The result shows that, the influent HCO3 - concentration is controlled in three conditions which are 170 mg/L, 260 mg/L and 440 mg/L. Electro - sorption equipment continuous runs for 6 cycles, in addition to TDS, Cl^ - and total bardhess removal rates are low in the first cycle, removal rates of three ions and HCO3 - are gradually downtrend in the re- maining 5 cycles. Qhen HCO3 - concentration is 440 mg/L, the removal rate decreases significantly. The difference with other ions is that the higher the concentration of influent HCO3 ^-, the higher the removal rate of HCO3^- , and the highest rate of removal is in the first cycle. Under high bicarbonate alkalinity conditions, HCO3^ - interacts with calcium and other hardness ions, leading to the fouling of electrode plate, thus affecting the desahing effect of electro - sorption equipment. In addition, based on the scale formation of polar plate, acidification stripping of raw water, continuously running under the conditions of the influent HCO3 ^- which concentration is 100 mg/L, it is found that the low influent HCO3 ^- concentration can improve the desalting effect of electro - sorption equipment.关键词
重碳酸盐碱度/电吸附/脱盐Key words
bicarbonate alkalinity/electro - sorption/desalination分类
资源环境
