土壤渗入水不断通过高分子防护排（蓄）水异型片流至虹吸排水槽。在虹吸排水槽上安装透气管，虹吸排水槽内的水在空隙、重力和气压作用下很快汇集到出水口，出水口通过管道变径的方式使虹吸直管形成满流从而形成虹吸，虹吸排水槽内的水不断被吸入观察井。经观察井排入雨水收集系统内，待晴天需要对绿化植物进行浇灌时再对雨水进行循环利用。这样就从以往的被动排水转变成了现在的主动式排水，从而真正实现了零坡度、有组织排水。
Soil infiltration water continuously flows to siphon drainage trough
through polymer protection drainage (storage) special-shaped sheet. The
air vent pipe is installed on the siphon drainage channel. The water in
the siphon drainage tank will quickly gather to the water outlet under
the action of air gap, gravity and air pressure. The water in the siphon
drainage tank is continuously sucked into the observation well by
changing the diameter of the pipe at the outlet to form a full flow. The
rainwater is discharged into the rainwater collection system through
the observation well, and the rainwater can be recycled when the
greening plants need to be irrigated on sunny days. In this way, the
passive drainage in the past has been transformed into the active
drainage, so as to realize the zero slope and organized drainage.
沪望虹吸排水槽：分区域、有组织排水
Huwang siphon drainage tank: regional and organized drainage
