Ohio city anaerobic digestion upgrade to harness wastewater for renewable energy

Sponsored by
Expansion of the anaerobic digestion facility will use 100 percent of Akron's wastewater for renewable energy. (Photo credit: BIOFerm Energy Systems)


Jan. 20, 2014 -- Due to the expansion of an anaerobic digestion facility at a wastewater treatment plant in Akron, Ohio, domestic sewage will generate roughly 12,192 megawatt hours (mwh) of electricity in 2014 -- enough green energy to provide electricity to 1,600 homes.

KB BioEnergy, owner of the anaerobic digestion plant, invested $32 million last year to expand their existing composting operation in order to more effectively extract the renewable energy stored in human biosolids. Likewise, a private-public partnership (PPP) between the city of Akron and KB BioEnergy helped make the expansion of this renewable energy facility possible.

One hundred percent of the city of Akron's biosolids will be processed anaerobically by the facility, recently dubbed the Akron Renewable Energy Facility. Anaerobic digestion (AD), the process used to the turn this waste into energy, involves heating the biosolids while bacteria break down the organic matter into methane and carbon dioxide. The resulting biogas is collected and used for heating and electricity.

Nothing is wasted at the site, and maximum profits are made through the addition of a dryer, which turns the facility's post-digester biosolids into sellable fertilizer. Aside from taking strides of sustainability through the use of human waste for renewable energy, the AD expansion at the treatment plant dramatically cuts municipal operating cost while generating additional revenue through the sale of pelletized fertilizer.

KB Bioenergy, originally KB Compost, began as a compost facility before it made the decision to capitalize on the biosolids resource through AD. The partnership was made in conjunction with Applied Technologies, PNC Bank, and Viessmann Group members BIOFermTM Energy Systems and Schmack Biogas GmbH. Of the $32-million upgrade costs, only $5 million was designated to the new AD technology. This included two additional complete mix digesters and two horizontal plug flow digesters.

According to Biogas Data, over 4,000 additional wastewater treatment facilities across the U.S. have the potential to adopt AD technology.

See the original release here.

###

Sponsored by

Did You Like this Article? Get All the Water Industry News Delivered to Your Inbox or Mailbox

Subscribe to one of our magazines or email newsletters today at no cost and receive the latest information.

TODAY'S HEADLINES

Xylem to help improve Chesapeake Bay water quality with treatment technology

Xylem has been awarded a contract to provide an existing wastewater treatment plant with advanced treatment technology, which will play a key role in an initiative focused on improving water quality in the Chesapeake Bay.

EPA awards $80M contract to Cadmus for drinking water protection support

The Cadmus Group announced that it has been awarded a seven-year contract worth more than $80 million with the Environmental Protection Agency's Office of Ground Water and Drinking Water.

Investment in CA water irrigation improvements paying off amid drought

Thanks to irrigation improvements across the state of California -- which agricultural producers have implemented with help from the Natural Resources Conservation Service -- many farmers remain successful despite severe water cutbacks amid ongoing drought.

Aclara introduces smart infrastructure network for water, gas and electric utilities

Aclara has introduced the Synergize network, a fully integrated solution for gas, water and electric utilities that offers high performance and a low cost of ownership.

FOLLOW US ON SOCIAL MEDIA

  

 


© 2015. PennWell Corporation. All Rights Reserved. PRIVACY POLICY | TERMS AND CONDITIONS