EPA의 Pathogen Equivalency 위원회가 BCR 사의 균을 줄이기 위한 CleanB 공정 과정을  인정한다고 밝혔다. 이에 따라 CleanB 공정은 폐수 및 유기물 처리 기술을 가진 회사 중 최초로 Class-B의 유기물고형물 처리 과정에서 EPA 규제 당국의 승인을 얻었다.

 

BCR의 회장 겸 CEO인 Aaron Zahn은 “CleanB 공정은 소화조에 난처하게 적용하며, 대형 발자국을 포함한 소화 인프라 과정에서 많은 비용을 필요로 한다”고 말했다.

 

또한, “이는 인구증가 혹은 Class-B의 규정 준수를 위해 지방 자치 단체에 대한 설계, 건설, 운영, 처분 및 에너지에 대한 막대한 비용 절감으로 변환될 수 있다. 게다가 CleanB 공정은 소화 과정에 의해 무취인 바이오 고형물을 무취로 생산하고 영양분의 반환 정도를 감소시켜 생산과정에 의한 악취의 와 에너지 소비의 상당한 감소를 돕는다”고 밝혔다.

 

 

 

The Environmental Protection Agency's (EPA) Pathogen Equivalency Committee announced that it has granted its CleanB™ process National Process to Significantly Reduce Pathogens (PSRP) Equivalency to BCR Environmental (BCR), the first and only company of wastewater and organic waste treatment technologies to obtain nationwide EPA regulatory approval for a Class-B biosolids treatment process.

 

"The CleanB process is a digester in a box. It eliminates the need for costly and large-footprint digestion infrastructure," said BCR President and CEO Aaron Zahn. "This translates into huge cost reductions for design, construction, operation, disposition, and energy for municipalities that need to meet population growth or Class-B regulatory compliance. In addition, the CleanB process provides substantial reductions in energy consumption improvements in odor control by production of odorless biosolids cake and reduces nutrient return loads created by digestion processes."

 

The simple one-stage CleanB process is a plug-flow, aerobic/chemical process that utilizes the addition of chlorine dioxide to disinfect, remove odor, and enhance dewatering of secondary sludge. CleanB is a very simple treatment process to use and implement with low capital and operating costs. It also treats biosolids in an odorless manner to meet Class-B regulatory requirements for beneficial reuse in accordance with Title 40 Code of Federal Regulations Part 503 and allows for a number of other beneficial reuse strategies that may otherwise not be practical.

 

Modular and highly scalable, the CleanB system may be mobilized or permanently installed onsite. Because it can eliminate aerobic digestion, thickening systems, odor-control systems, and other energy-intensive equipment, a wastewater treatment plant's energy and physical footprint typically are dramatically reduced.

 

In the first year of full-scale operation at the Naval Air Station in Jacksonville, the CleanB system saved the base $75,000 in energy costs and $105,000 in total operating costs, which translates into $2.9 million over the 20-year life of the project, with a payback (including equipment costs) of less than 10 years. In addition to a reduction in greenhouse gas emissions of approximately 480 tons in the first year, improved dewatering of biosolids decreased the total volume of biosolids, resulting in the elimination of 12 truckloads, with an average annual savings of over $10,000 on hauling and disposition. Polymer consumption was reduced by 71 percent as well.

 

[출처 = Water World / 2015년 5월 28일]