As an alternative solution to the poor performance of constructed wetlands in municipal sewage treatment in winter,a buffer unit using natural vermiculite as filler was introduced into the system.

• 针对当前人工湿地污水处理中普遍存在的冬季处理效果差等问题,研究了在处理系统中构建天然蛭石缓冲单元及其吸附饱和后进行生物再生的可行性。