지난 3월 12일, 엄격한 수질 기준을 충족시키기 위한 노력의 일환으로 폐수처리 시스템을 개선하고자 애리조나 Parker 지역에 위치한 콜로라도 강 하수도 합작투자가 미국 환경보호청(EPA)과 협의에 들어갔다.

이번 업그레이드는 새로운 인공 습지 처리 시스템의 설계 및 구조를 포함한다.

 

 

 

In an effort to meet stringent water quality standards, the Colorado River Sewer System Joint Venture, located in the town of Parker, Ariz., entered into an agreement with the Environmental Protection Agency (EPA) on Thursday, March 12, to upgrade its wastewater treatment system.

 

The upgrades include the design and construction of a new artificial wetlands treatment system. The artificial wetlands will be capable of advanced treatment and nutrient removal to protect the downstream water quality of the Colorado River.

 

Artificial wetlands restore habitats for native flora and fauna. Like natural wetlands, artificial wetlands also filter impurities.

 

In this case, the Colorado River Sewer System Joint Venture could not adequately treat nutrients and other contaminants in wastewater discharging into a Colorado River tributary. The system treats wastewater from the town of Parker and the Colorado River Indian Tribes Reservation.

 

The cost of the upgrades is approximately $100,000. They are expected to be complete by 2017.

 

[출처 = Water World / 2015년 3월 13일]