Page 47 - 香港房屋委员会年报 Hong Kong Housing Authority Annual Report

主要工作
Key Achievements 45

零灌溉系統 — 為可持續發展節約用水 Zero Irrigation System – Sustainability
through Water Conservation
零灌溉系統2013年開始研發，是通過重用雨水灌溉
植物的一種先進系統，有助減少房委會的用水量。 Developed since 2013, the Zero Irrigation System (ZIS) is a
該系統由三個分支系統組成：雨水收集系統（用以收 pioneering system that reduces the HA’s water consumption
集和貯存多餘的雨水到種植區下方的貯水箱）、可持 by reusing rainwater for irrigation. It works by combining
續城市排水系統（用以減少雨水溢流至城市排水 three sub-systems: a Rainwater Harvesting System that
系統）和底土灌溉系統（此為順應自然的節能設計， collects and stores excess rainwater in retention boxes
可把貯水箱內的雨水輸送至上方生長的植物）。 under the planting areas; a Sustainable Urban Drainage
System that reduces storm water runoff entering the urban

我們在龍逸邨和洪福邨兩個零灌溉系統的試點項目 sewer system; and a Sub-soil Irrigation System, a passive
均達至理想效果。零灌溉系統灌溉的植物均生長良 design system that takes the water in the retention boxes and
好，既無出現積水，也無發出異味。由2016年起， delivers it to the vegetation growing above.
公共屋邨的花槽只要位置和面積合適，便會廣泛採
用零灌溉系統，以人手保養園藝的需要因而大減。 Satisfactory performances were recorded in two pilot
我們的目標是在所有新建公共屋邨廣泛應用零灌溉 projects at Lung Yat Estate and Hung Fuk Estate. In
系統。我們會繼續進行研究，希望能提升零灌溉 both projects, plants irrigated by ZIS remained in good
系統的設計，並確保盡可能使用最具成本效益的物 condition, waterlogging did not occur, and no unpleasant
料和方法。長遠而言，房委會會盡量少用食水灌溉 odours were noted. ZIS has been widely used in planters
植物，並為在本港市區恢復自然水循環出一分力。 of appropriate location and size in public housing estates
since 2016, and the amount of manual horticultural
maintenance has also been substantially reduced. Our goal
is to widely adopt ZIS in all our new public housing estates
and to continue carrying out research to optimise the ZIS
design and to ensure that we use the most cost-effective
materials and methods possible. In the long term, the HA
aims to minimise the use of potable water for irrigation,
and to contribute to restoring the natural hydrologic cycle
in urban areas of Hong Kong.

東匯邨零灌溉系統花床與週邊園境設計融合 油麗邨第七期零灌溉系統花床
ZIS blends in with surrounding landscape design ZIS Planter at Yau Lai Estate Phase 7
at Tung Wui Estate