Power Positive Resource Recovery
Figure 1. Power positive resource recovery at a BNEW resource recovery center

Using laws of thermodynamic analysis to evaluate the energy and power characteristics of wastewater and beneficial uses of biogas offers greater insight into best business practices and what is achievable.
David Parry
BioCycle August 2014, Vol. 55, No. 7, p. 45

 

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Revisiting Urban Water Infrastructure
Green storm water infrastructure, such as this rain garden in Portland, Oregon, is becoming increasingly common to capture and infiltrate rainwater. Compost is often used in the engineered soil mixes for the rain gardens.

Transitions to practices such as green storm water infrastructure, grey water use and recycling treated wastewater are becoming more common. Part II
Sally Brown
BioCycle May 2014, Vol. 55, No. 4, p. 37

 

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Codigestion Potential At Large-Scale Wastewater Treatment Facility
The Deer Island facility has twelve 3-million gallon mesophilic digesters

A study for the Deer Island treatment plant in Boston Harbor evaluated the feasibility of codigestion, and whether the economic benefits outweigh the costs.
David L. Parry
BioCycle January 2014, Vol. 55, No. 1, p. 55

 

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Biogas To Heat And Power
Sheboygan, Wisconsin’s cogeneration equipment includes ten 30 kW and two 200 kW microturbines (several shown above), four heat recovery systems and a biogas treatment and compression system (left).

A variety of turbines and IC engines are designed to operate on biogas. Both types of cogeneration equipment have unique characteristics including their electrical and thermal efficiency.
Kim Murdock-Timmerman
BioCycle September 2013, Vol. 54, No. 9, p. 59

 

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Bioenergy Potential In California’s Food Processing Residues
Figure 1. California food processing facilities by county

Fruit and vegetable processing facilities and wineries are the largest sources of high moisture solid residues potentially available as bioenergy feedstocks.
Ricardo Amón, Mark Jenner and Stephen Kaffka
BioCycle March 2013, Vol. 54, No. 3, p. 47

 

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Biogas Production And Potential From U.S. Wastewater Treatment
Figure 2. Percentages of biogas utilization technologies in use at WWTPs producing biogas

An extensive data collection undertaking has yielded an improved picture of wastewater treatment plants in the U.S. with operating anaerobic digesters and if and how the biogas generated is utilized.
Maile Lono-Batura, Yinan Qi and Ned Beecher
BioCycle December 2012, Vol. 53, No. 12, p. 46

Biomethane Production At Ontario Wastewater Treatment Plant
The City of Hamilton is upgrading its treatment plant to process higher flows and add tertiary treatment. Changes will result in more biogas generation in the digesters.

The City of Hamilton is purifying biogas and injecting it into the grid, while continuing to generate power and recover heat from its CHP system.
Peter Gorrie
BioCycle November 2012, Vol. 53, No. 11, p. 43

Anaerobic Digester Expands Treatment Options
The Food to Fuel project takes waste grease and oil from restaurants and food processing facilities and separates the oil from the water (left) to produce a heating oil. Residuals from that process, along with food waste and municipal sludge, are anaerobically digested in a 1.23 million gallon Biothane continuously-stirred reactor (below).

What began as a septic tank pumping company in 1955 has expanded into a full-service wastewater treatment company — and renewable energy producer.
Barb Culton and Richard Mattocks
BioCycle September 2012, Vol. 53, No. 9, p. 41

 

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Wastewater Treatment Facilities As Renewable Resource Centers
Seattle, King County Wastewater Treatment

One of the great public health triumphs of the last century — wastewater treatment — is poised for transformation into a community sustainability centerpiece.

Sally Brown
BioCycle March 2012, Vol. 53, No. 3, p. 41

 

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