Rainwater Harvesting System Tour Guide Map Multipurpose Rainwater

Rainwater Harvesting System Tour Guide Map Multipurpose Rainwater Management Everybody happy Capacit 3, 000 ton (1, 000 ton× 3 tanks) y 1) Flood control Desired 2) Water saving (gardening, toilet effect flushing) 3) Emergency use Starcity 2 1 Water management at 3 4 5 1 : Complex A roof catchment 2 : Complex B machine room below the ground 3 : Filter room 4 : Sprinkler test operation 5 : Complex C Monitoring room § For Flood Control For Water Saving For Emergenc y If we harvest rainwater, we can get the multipurposes such as mitigation of flooding, water conservation, and using for emergency. This trial for using rainwater can bring benefits of you, me and us. By decreasing the amount of water supply from Han river, environment can be better. In addition, global warming can be prevented due to less energy needed to convey water. Starcity was approved as successful case of rainwater harvesting system - 2010 IWA Project Innovation Award - Starcity is selected as a cover story on academic journal Water 21(2008. 12 issue) of IWA(international water association) § § The media such as KBS, MBC, SBS, NHK, Jungang, Chosun, Dong-a, and Hankyoreh cover Starcity's excellence as rainwater harvesting system. (press release can be found on Blog : http: //blog. daum. net/drrainwater) Many experts around the world - 2008. 10 international tube association visit (chairman Robert Virgon) visit - 2010. 10 experts from Malaysia and Singapore visit IWA (International Water Association) academic journal Water 21 (2008. 12 issue) - 2012. 03 Ministry of Land, Infrastructure, Transport and Tourism manager of Japan visit ‘Happy water management’ can be realized by the waffle water management which is managed by the decentralized water system in each small district. Rain for all Seoul National University rainwater research center Starcity community center (02 -2024 -7117) Seoul National University Rainwater research center

Scale use Jayang-dong Gwangjin-gu Seoul Land area : 62, 500 ㎡ Roof area : 16, 867 ㎡ 3 stories below the ground 35/45/50/58 Stories above the ground – a total of 4 buildings Residential and Commercial Complex Constructio 2003. 10 ~ 2007. 03 n period § Increasing flooding risk of surrounding area due to development of Konkuk university baseball ground – necessity of flood prevention facility § Amount of rainwater use and Utilization ratio 50 100% accumulative use(㎥) accumulative ratio(%) 40 30 60% 20 40% 10 20% 0 3 4 5 6 7 8 Month (2007) 9 1. 5 § Public water bill of about 0. 2$/m per household Below 2 NTU Prevention Monitoring system and management to prevent regional flood § NTU 2 0. 5 § 0 0 20 40 Monitoring period (day) 60 § NTU meets greywater quality standard § § Rainwater storage tank designed to have a function of sedimentation tank § Conditions for stagnant water to decay - Organic matter + inorganic matter + sunlight Installation of rainwater storage tanks depending on water quality Incentive program Promotion of rainwater harvesting system for win-win policy Tap water being replaced with rainwater, prevention of flood and fire, and energy saving can be done by utilizing rainwater. After being approved as a successful case, Starcity project provides a chance to legislate for seoulcity eco-friendly architecture ordinance. Seoul city provides subsides, maximum ten million won for rainwater harvesting system. (contact: 02 -3707 -9574) § 1 Water quality management Innovativ e Idea 10 11 12 Water quality(NTU) Solution to urban flooding problems <PLC system> 2 § In 2007 water saving of 40, 000 t energy saving of 10, 000 KWH § PLC (Programble Logic Control) system with Information Technology Emergency use § Rainwater utilization ratio(=amount of rainwater use/ total rainfall) reaching 65% with water cycle system 2. 5 No runoff of rainwater until first 100 mm in the complex Water saving`` 0% 1 Gwangjin-gu office suggests additional floor area ratio of 3% for Incentive of rainwater harvesting system Features of ofthe § Emergency water 1, 000 t available all the time design 80% Multipurpose rainwater flood use mitigation Accumulative utilization ratio(%) location Operation result Accumulative use (1000㎥) Starcity Profile Innovative rainwater harvesting system § <Reference> Han, Moo-Young, Mun, Jung-Soo An Economical Analysis of the Rainwater Harvesting(RWH) System at the S Residential and Commercial Complex journal of the architectural institute of Korea planning & design 25(12), 173 -181 M. Y. Han, J. S. Mun, Operational data of the Star City rainwater harvesting system and its role as a climate change adaptation and a social