미국 펜실베니아 체스터시에 위치한 Covanta의 댈라웨어 밸리 폐기물에너지시설이 최근 전력 플랜트의 냉각 타워에 GE의 고도 물 재사용 기술을 설치함으로써 지역 물 공급량 중 하루 130만 갤런의 물을 절약했다.

Covanta 댈라웨어 밸리는 제3차처리 패키지로 GE의 RePAK 조합 정밀여과 및 역삼투 시스템을 설치해 시설을 업그레이드 했다. 이 새로운 시스템은 플랜트가 근처 지자체 폐수처리 플랜트로부터 냉각 목적으로 배출해낸 130만 갤런의 처리된 배출수를 재사용할 수 있게 한다.

 

 

 

Covanta's Delaware Valley energy-from-waste facility, located in the city of Chester, Pa., has saved 1.3 million gallons per day (MGD) from local water supplies by recently installing advanced water reuse technology from GE (NYSE: GE), an American multinational conglomerate corporation, in the power plant's cooling tower.

 

Covanta Delaware Valley upgraded the facility by installing GE's RePAK combination ultrafiltration (UF) and reverse osmosis (RO) system as a tertiary treatment package. The new system enabled the plant to reuse the 1.3 MGD of treated discharge water from a nearby municipal wastewater treatment plant for cooling purposes.

 

The Chester facility generates up to 90 megawatts of clean energy from 3,510 tons per day of municipal solid waste. Previously, the plant used 1.3 MGD -- or nearly 5 million liters per day -- of municipal drinking water in its waste conversion process, costing the company thousands of dollars in daily water purchases.

 

GE installed two RePAK-450 trains, each producing 450 gallons per minute of purified water. As a result, Covanta Delaware Valley has eliminated the need to purchase the 1.3 MGD of local drinking water per day, which results in a substantial financial savings in addition to extremely favorable environmental benefits.

 

Covanta chose a combined treatment technology approach because the typical organic and dissolved mineral content of the wastewater requires additional treatment to be suitable for use as cooling tower makeup. RO was selected as the technology of choice, and UF was required as the pretreatment solution.

 

GE's RePAK equipment was delivered in 2014, with commissioning taking place the same year, making Covanta Delaware Valley the first North American company to deploy GE's RePAK technology. GE also honored Covanta with the Return on Environment (ROE) Award -- honoring a significant environmental (water, energy, resource) accomplishment -- to recognize the company for its noteworthy reductions in water usage.

 

[출처 = Water World / 2015년 1월 26일]