CHEN Shi-qi,LIU Cheng,SHEN Hai-jun,et al.Discussion on Replacement Strategy of Invalidated Biological Activated Carbon in Drinking Water Plants[J].China Water & Wastewater,2020,36(17):49-56.
水厂失效生物活性炭的更换策略探讨
- Title:
- Discussion on Replacement Strategy of Invalidated Biological Activated Carbon in Drinking Water Plants
- 摘要:
- 利用现场调研、中试等方法对水厂失效生物活性炭更换中的一些典型问题进行了分析和探讨。针对目前活性炭更换过程中重点关注的旧活性炭的合理使用问题，中试结果表明：较高的更换比例有利于控制活性炭单元的出水水质，延长活性炭使用时间，因此生物活性炭池宜采用较大的更换比例，并通过控制更换炭池的比例来保障生物降解能力的相对稳定；活性炭更换的时间节点需要结合其应用功能定位和活性炭作用规律来确定，宜控制在每年的5月左右；活性炭更换过程需要考虑采用机械化操作的方式。总之，生物活性炭的更换需要结合水厂实际需求，选择适合的更换策略，保障出水水质安全。
- Abstract:
- Some typical problems during replacement of invalidated biological activated carbon (BAC) in drinking water plants were analyzed and discussed by means of on-site survey and pilot test. At present, the rational use of the invalidated BAC is mainly concerned in the process of activated carbon replacement. Pilot test results showed that higher replacement ratio favored the treatment performance of the BAC filter and extended the service time of BAC. Therefore, a large replacement ratio should be adopted for the BAC filter, and the biodegradation capacity should be relatively stable by controlling the replacement ratio. Replacement time of BAC needs to be determined in combination with its application function and working mechanism, which should be controlled around May of each year. The BAC replacement process needs to consider the use of mechanical methods. In all, suitable replacement strategy should be optimized to guarantee the drinking water safety based on the practical need of the drinking water plants.
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