TEC VAZ VoTGK는 러시아 볼가(Volga) 사마라(Samara)지역의 가스 화력 플랜트로 GE사의 AZ8101 부식억제 기술을 사용해 연간 130만 갤런의 물을 저장하고, 물소비를 감소시켜 연간 12만 달러를 절약하고 있다. 또한, 구리의 부식 속도를 감소시키는데, 이는 4배 가량 제거되던 볼가강 내에 포함된 구리의 양을 20배 가량 감소시킨다.

물사용량과 구리 부식의 감소는 주목할만 하며, GE는 TEC VAZ VoTGK로부터 오늘날 환경 및 산업의 지속가능선 문제와 관련해 균형을 지키기 위한 업적을 인정하는 ‘Ecomaginaton’상을 수여한 바 있다.

TEC VAZ VoTGK, a gas-fired power plant in the Samara area of the Volga region of Russia, has saved 1.3 million gallons of water annually and reduced water consumption enough to save $120,000 per year by using GE's AZ8101 corrosion inhibitor technology. The facility also decreased the rate of copper corrosion by 20 times and reduced the amount of copper being discharged into the Volga River by four times.

In honor of its notable reductions in water usage and decreased corrosion, GE awarded TEC VAZ VoTGK an Ecomaginaton award, which recognizes the achievements of industrial users for striking a positive balance between today's environmental, industrial and sustainability challenges. It is given to the top GE customers in environmental and economic performance.

The TEC VAZ VoTGK plant provides power, heating and hot water to the Volga automotive plant and a nearby city. The power plant consists of 14 boilers and 11 turbines and surface condensers made from admiralty brass, and two open evaporative cooling systems provide the cooling to the steam condensers and auxiliary equipment. The makeup water for both cooling systems is raw water taken directly from the Volga River, and blowdown from the cooling systems is discharged back to the river.

Previously, the cooling systems were untreated, which resulted in high copper corrosion rates, and the plant operated the cooling systems at low cycles of concentration to reduce the discharge penalty caused by the high copper concentrations within the effluent. To reduce the copper corrosion rates, GE's inhibitor was added to the systems along with implementation of a monitoring program to gauge the effectiveness of the cooling water treatment upgrade. The new monitoring program included copper corrosion monitoring with the use of pre-weighed admiralty brass corrosion coupons, copper analysis within the recirculating water and residual azole monitoring.

[출처 = Water World / 2015년 7월 17일]