在瑞典进行微型污染物清除的全面第四个处理步骤的评估:沙子和GAC过器组合
1School of Education and Environment, Division of Natural Sciences, Kristianstad University, 291 88 Kristianstad, Sweden.
The Science of the total environment
|October 4, 2023
概括
颗粒活性炭 (GAC) 过器有效地去除废水处理中的微污染物. 在三年的时间里,Degeberga WWTP
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
- 化学工程是化学工程的重要组成部分.
背景情况:
- 清除微污染物对于废水处理厂 (WWTP) 来说至关重要.
- 颗粒活性炭 (GAC) 过器越来越多地用于清除微污染物.
- 瑞典的Degeberga WWTP在2020年4月安装了第一个全尺寸的GAC过器.
研究的目的:
- 评估GAC过器的长期性能,以消除微污染物.
- 评估沙过器在保护GAC过器方面的有效性.
- 为了确定过器负载和化合物特性对去除效率的影响.
主要方法:
- 三年内运行两种不同碳类型的GAC过器.
- 监测24种微污染物质的清除情况.
- 根据床体积和复合特征 (例如电荷) 分析过器性能.
主要成果:
- 对于30,000个床位,GAC过器在没有反冲洗的情况下运行.
- 沙过器有效地保护GAC过器免受固体和有机物质的影响.
- 24种物质的初始去除率超过98%;一些化合物在第二年出现突破.
- 在三年内,微污染物的平均去除率为89%,而生物降解有助于去除.
- 带正电荷的化合物具有较高的吸附率,而带负电荷的化合物具有较低的去除率.
结论:
- 沙子和GAC过器的组合是微污染物清除的经过验证的表现.
- 生物降解在GAC过器中的微污染物去除中发挥着作用.
- 该技术满足了对微污染物清除,提高水质和保护健康的监管目标.
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