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http://dx.doi.org/10.4491/KSEE.2017.39.7.377

Expansion of Water Reuse Facility for Building Unit to Solve Water Shortage Problem  

Park, Yong-hwa (Graduate School of water Resources, Sungkyunkwan University)
Shim, In-tae (Department of Civil and Environmental Engineering, Seoul National University)
Kim, Hyun-jin (Research institute at Haesung Engineering Inc)
Jang, Am (Graduate School of water Resources, Sungkyunkwan University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.39, no.7, 2017 , pp. 377-384 More about this Journal
Abstract
This study examined the possibility of solving the water shortage problem through the water reuse of buildings through the Suwon water reuse (greywater) facility installation project conducted as a pilot project of Ministry of Environment. Water reuse of individual building units can reduce city water demand by up to 25%. This is a level that can solve the water shortage problem in Korea. However, in order to revitalize the water reuse facilities of individual buildings, it is necessary to solve the problem of the user's rejection of the greywater and the economical problems. The resolution of the user's rejection can be solved by linking the MBR process with the AOP process. When the MBR process and the AOP process are operated in conjunction with each other, it is found that the users do not feel the water quality difference with the tap water. Economical problems can be solved at the water rate levels when the facility capacity is over 100 ton/day considering the construction cost and the operation cost, and when the operation cost alone is over 15 ton/day. Furthermore, when considering the social benefit cost, it is found that profit is generated from 150 ton/day.
Keywords
Greywater; MBR; AOP; Water Reuse;
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