With the growing awareness of water reuse “Promotion of and Support for Water Reuse Act” was established in 2010. The act enabled to manage rainwater-using facilities, greywater systems, and the reuse facilities of treated effluents from SWTPs and wastewater treatment plants (WWTPs) under a single umbrella while they were previously regulated by individual laws.
In September 2011, the “Water Reuse Master Plan (2011-2020)” was formulated. The plan is the highest-order national plan on water reuse and it specifies the nation’s policy direction of the water reuse for the subsequent decade. It is expected to secure 25.4 tons of alternative water resources by 2020 and to replace 1.1 billion tons of tap water annually. It can also induce the growth of related research & development and industries. In August 2011, the “Comprehensive Guidebook on Water Reuse Facility Installation and Management” was prepared by combining the previous guidebooks on rainwater-using facilities and the reuse systems of treated effluents from SWTPs/WWTPs. The guidebook also describes the greywater system.
The “Promotion of and Support for Water Reuse Act” enacted in 2010 prescribes the installation of rainwater-using facilities and greywater systems and the reuse of treated effluents from SWTPs/WWTPs. Rainwater-using facilities must be installed when any sports complex, indoor gymnasium, or government office is newly constructed, renovated, or re-constructed. Since 2013, the mandatory requirement of rainwater use has applied to private facilities including multi-unit dwellings of a certain size or larger, schools, golf courses, and large shopping malls. Accommodations and bathhouses of a certain size or larger, factories, and urban development projects are required to install greywater systems. As the Act was amended in 2013, the requirement was extended to power generation plants. The Act prescribes the standards for facility’s design and reused water quality for reusing the treated effluents from SWTPs/WWTPs. The Act amended in 2013 also specifies the reuse of thermal discharge from power generation plants.
The water reused system combined with rainwater and greywater is tested as a pilot project to supply reused water stably all the year round. The project is designed to use rainwater and the greywater from washbowls for flushing toilets. Although the system can be operated temporarily, the combination of clean rainwater with the low-level contaminated greywater can supply the reclaimed water and reduce tap water use through the year. It is planned to invest 10 billion KRW 20 sites for the pilot project. As of 2014, the project is in progress in eight site.
To promote the reuse of treated effluents from SWTPs/WWTPs, the government is looking for the potential demand of the reclaimed water. In order to expand the reuse of treated effluents at industries, the treated effluents need to meet the water quality level required by customers. As of 2014, 28.9 billion KRW is invested to improve the quality of the treated effluents by applying advanced treatment processes. 140 billion KRW has been invested to construct a treated effluent reuse facility in Pohang. The facility will be built by 2014 and it will supply reclaimed water to POSCO and other factories.
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Last modified : 2017-12-12 08:38
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