中水系统 meaning in English

reclaimed water system

Design and evaluation of recycle - water reuse system in new campus
河北科技大学新校区中水系统的设计与评价
Some utilization projects of roof runoff water were also discussed including bringing it into normal water system , independent rainwater utilization system , roof virescence system and infiltration and irrigation system
讨论了屋面径流的几种利用方案，主要包括纳入中水系统、独立的雨水利用系统、屋面绿化利用系统和渗透回灌系统。