BioCycle World
JWC Environmental’s 3-SHRED grinder

BioCycle November 2016, Vol. 57, No. 10, p. 6

Treatment Plant Pathways To Energy Neutrality
The Omnivore™ recuperative digestion system was installed in one of the WRF’s decommissioned digesters, increasing capacity for higher quantities of off-site organics.

Energy efficiency, codigestion and new CHP units have the Victor Valley Regional Water Reclamation Facility in California more than 90 percent of the way to energy net zero.
Nancy Andrews and Logan Olds
BioCycle December 2015, Vol. 56, No. 11, p. 42

Wastewater Treatment Plants Shrink Carbon Footprint
The West Lafayette (Indiana) Wastewater Treatment Utility installed a receiving station with a platform, integrated cart tipper (left) and a JWC Environmental Macho Monster grinder to handle preconsumer food scraps such as melon rinds and banana peels.

BioCycle series concludes with a look at water resource recovery facilities in California, Indiana and Wisconsin. Part II
Marsha Johnston
BioCycle July 2015

Boosting Biogas And The Bottom Line At WRRFs
The East Bay Municipal Utility District (EBMUD) in Oakland, California, was an early pioneer in codigestion at water resource recovery facilities (WRRFs), utilizing its excess digester capacity to process food waste streams.

“Traditional” WWTPs with anaerobic digesters are adding high strength food waste and FOG to become Water Resource Recovery Facilities with significantly smaller carbon footprints. Part I
Marsha Johnston
BioCycle June 2015

On The Road To Power Positive Wastewater Treatment
Construction of a $3 million receiving facility for food waste and other high strength organics was completed in January (left). Biogas from the AD tanks is directed to a gas storage membrane system (right).

Claire Siegrist
BioCycle May 2015

Oregon WWTP’s Energy Net Zero Journey
Haulers connect to the FOG receiving station, comprised of two tanks, a FOG grinder, unload/tank mixing pump and a feed pump. Tipping fee is $.08/gallon. The plant has two 400 kW CAT engines (right).

Energy efficient digester mixers and treatment plant blowers, as well as installation of a solar array, FOG receiving system and two 400 kW CHP engines, are credited with helping to achieve energy net zero performance.
Nora Goldstein
BioCycle March/April 2015

Wastewater Treatment Plant In Compliance — And Off The Grid
A biomass equalization tank is used to mix the treatment plant solids with other substrates, such as food waste, prior to loading into the digesters.

Partnership between the City of Wooster, Ohio and an anaerobic digester developer to retrofit WWTP solids handling is already yielding positive results.
Marsha Johnston
BioCycle December 2014, Vol. 55, No. 11, p. 35

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

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

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

Biogas To Heat And Power

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

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

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

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