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Possibility of improvement of boiler water treatment process-ion exchange vs. reverse osmosis

机译:改善锅炉水处理工艺的可能性-离子交换与反渗透

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摘要

The boiler water in certain power plant is produced by chemical decarbonization, sand filtration, and ion exchange. Process ends with mixed bed ion exchange. The current boiler water treatment process is analyzed in terms of achieved water quality, quantity and quality of wastewater, and amount of chemicals needed. The main disadvantage of current process is consumption of large amount of chemicals. Ion exchange process could be replaced with the reverse osmosis, but pretreatment (decarbonization and filtration) should be retained. Since the permeate quality does not meet quality requirements, it would be advisable to use mixed bed ion exchange. If reverse osmosis is used, quantity of water that enters the treatment and wastewater would be for about 17.5 and 150% larger, respectively, but content of salt in wastewater would be about 20-30-fold less. Nevertheless, final decision on which technique to apply should be based on further economical considerations.
机译:某些发电厂的锅炉水是通过化学脱碳,砂滤和离子交换产生的。过程以混合床离子交换结束。根据实现的水质,废水的数量和质量以及所需的化学品量来分析当前的锅炉水处理过程。当前工艺的主要缺点是消耗大量化学药品。可以用反渗透代替离子交换过程,但应保留预处理(脱碳和过滤)。由于渗透物的质量不符合质量要求,因此建议使用混合床离子交换。如果使用反渗透,进入处理和废水的水量将分别增加约17.5和150%,但废水中的盐含量将减少约20-30倍。但是,最终决定使用哪种技术应基于进一步的经济考虑。

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