시카고 도심 수자원 교정 구역(MWRD)이 유기농 하수처리 시설의 설계와 두 혐기성 분해장치(anaerobic digester)의 개선, 칼류멧 물 정화 플랜트(CWRP)에 쓰일 유기농 하수 물질의 장기적인 공급을 위한 협상에 들어갈 대상으로 클린 에너지 기업인 Anaergia사를 선정했다.

CWRP의 하수 정화 운영은 북미에서 가장 큰 규모에 속한다. 이 프로젝트는 MWRD가 자원 회복과 에너지 발전 센터로 이 시설을 활용할 수 있게끔 도울 것으로 기대된다.

 

 

 

The Metropolitan Water Reclamation District of Greater Chicago (MWRD) has selected Anaergia Inc., a clean energy company, to enter into negotiations for the design of an Organic Waste Receiving and Processing Facility and modification of two anaerobic digesters, and for the long-term supply of organic waste material to the Calumet Water Reclamation Plant (CWRP).

 

CWRP's wastewater reclamation operations are among the largest in North America, and this project will help MWRD utilize this facility as a resource recovery and energy generation center. CWRP's new organic facility will have the capacity to process 300 tons per day of Organic Fraction of Municipal Solid Waste (OFMSW) plus liquid waste and fats, oils and grease (FOG). 

 

The OFMSW will serve as feedstock to produce additional biogas in CWRP's anaerobic digesters. The OFMSW will be produced at an existing off-site solid waste facility utilizing Anaergia's patented Organics Extrusion Press (OREX™), a device that separates unsorted municipal waste into wet organic and dry fractions.

 

On-site improvements at CWRP will include new capabilities for organic feedstock reception, storage and cleaning as well as digester modifications. Two of Calumet's existing digesters will be modified to enable dedicated digestion of the external organic feedstock utilizing Anaergia's proprietary high solid mixing system. By introducing external organic material for digestion, CWRP will more than double its renewable biogas production.

 

This project will significantly reduce greenhouse gas emissions. A reduction of approximately 99,000 metric tons of carbon dioxide equivalents being released into the environment per year is expected due to the diversion of the organic waste material from landfills, which is equivalent to taking more that approximately 19,000 vehicles off the road. It is also expected that the project will result in 20 to 30 construction jobs, 20 professional services jobs, and six to eight permanent jobs.

 

"The MWRD is moving away from the old idea of viewing sewage as a waste product to be disposed of, and instead seeing opportunities for recovery of resources and production of energy," said Kathleen Therese Meany, president of the Board of Commissioners. "The Illinois state legislature recently granted the MWRD the authority to actively engage in resource recovery. This is a landmark project for Cook County and the State of Illinois that will act as a catalyst for further job growth in organics recycling and green energy production.”

 

[출처 = Water World / 2014년 10월 3일]