YANG Shu-qi,LIU Jian-guang,ZHONG Xue-lian,et al.Formation of Bromate in Different Water Containing Bromide Treated by O3/PMS Process[J].China Water & Wastewater,2021,37(23):40-45.
O3/PMS工艺处理不同含溴水时溴酸盐的生成规律
- Title:
- Formation of Bromate in Different Water Containing Bromide Treated by O3/PMS Process
- 摘要:
- 研究了臭氧/单过硫酸氢钾（O3/PMS）氧化工艺处理Q水厂水源水时溴酸盐的生成规律，同时对比分析了O3/PMS工艺处理纯水、S学校自来水、H泉水、Q水厂水源水、J水库水等不同水质配制的含溴水时溴酸盐的生成情况。结果表明，在O3/PMS处理含溴Q水厂水源水时，当n(PMS)/n(O3)（物质的量之比）在0~1.5范围内增大时，PMS对溴酸盐生成的抑制作用呈增强趋势，且当n(PMS)/n(O3)=1.5时抑制作用达到最大,继续增大n(PMS)/n(O3)，PMS对溴酸盐生成的抑制作用减弱。当O3/PMS处理不同水质的含溴配水时，投加PMS对溴酸盐生成的影响效果不同。O3/PMS处理含溴纯水、H泉水和J水库水配水时，O3和PMS联用会促进溴酸盐的生成；O3/PMS处理含溴S学校自来水和Q水厂水源水配水时，O3和PMS联用会抑制溴酸盐的生成，这主要是因为水中有机物与O3和PMS发生了一系列反应从而影响了溴酸盐的生成。
- Abstract:
- Formation of bromate in source water of Q waterworks treated by ozone/potassium monopersulfate (O3/PMS) oxidation process was investigated, and the formation of bromate in different water containing bromide prepared by pure water, S school tap water, H spring water, source water of Q waterworks, and J reservoir water was compared and analyzed when treated by O3/PMS process. When source water of Q waterworks containing bromide was treated by O3/PMS, the inhibition of PMS on bromate formation showed an increasing trend with the n(PMS)/n(O3) (molar ratio) increasing in the range of 0-1.5, and the inhibition was the largest when n(PMS)/n(O3) was 1.5. When n(PMS)/n(O3) continued to increase, the inhibition of PMS on bromate formation was weakened. The effect of PMS on bromate formation was different when the different water quality containing bromide was treated by O3/PMS. When the pure water, H spring water and J reservoir water containing bromide were treated by O3/PMS, the combination of ozone and PMS promoted the formation of bromate. When O3/PMS was employed to treat S school tap water and source water of Q waterworks containing bromide, the combination of O3 and PMS inhibited the formation of bromate. The reason was mainly because of a series of reactions between organic matter in water and O3/PMS affected the formation of bromate.
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