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Energy Newsbriefs Blog

This current awareness service is prepared by the WSU Energy Program Library with funding from the U.S. Department of Energy State Energy Program. This information is provided for energy professionals and interested members of the public to highlight recent energy-related news, articles, and reports that discuss energy efficiency, energy conservation, and renewable sources of energy in engineering and policy circles.

 

Category: Wastewater

Wastewater


Sewage Treatment Plant Retrofits Diffusers to Cut Energy Consumption 50%

Blower & Vacuum Best Practices, Apr. 2016, by Doreen Tresca.
http://www.blowervacuumbestpractices.com/industries/wastewater/sewage-treatment-plant-retrofits-diffusers-cut-energy-consumption-50

"In 2012 when the plant was struggling to keep up with regulatory requirements, the Ilmajoki STP [Finland] was using 4000 kWh per day. Once the new diffusers and control systems were implemented, the plant was able to reduce their consumption and averages to under 2000 kWh per day."

Savings From the Sun: How to Use Solar Energy to Offset Upgrade Costs [Wastewater Treatment Plant]

Treatment Plant Operator, Apr. 2016, by Doug Day.
http://www.tpomag.com/editorial/2016/04/how_to_use_solar_energy_to_offset_upgrade_costs

"Solar energy helps an updated Maryland wastewater treatment plant cut utility power costs. A blower upgrade will soon follow."

Energy Efficiency in Water & Wastewater

Pumps & Systems, Sep. 2015, by Jeff Bergman.
http://www.pumpsandsystems.com/pumps/september-2015-energy-efficiency-water-wastewater

"VFDs [Variable Frequency Drives] can reduce energy consumption and water loss in variable pumping systems."

City Sewage Energy Recovery

North American Clean Energy, Jul/Aug 2015, by Erwin Schwartz B.Eng. is the President at DDI Heat Exchangers.
http://www.nacleanenergy.com/articles/20651/city-sewage-energy-recovery

"Municipal wastewater heat recovery is a system in which a heat exchanger transfers heat energy from the sewer waste water to a solution of water and antifreeze (ethylene glycol). A heat pump then uses the heat of this solution to heat buildings, preheat domestic hot water, and heat garages in the winter and also cool the space in the summer."


Biogas-To-Energy Helps A New York Facility Toward Self-Sufficiency

Treatment Plant Operator, July 2015, by Doug Day.
http://www.tpomag.com/editorial/2015/07/biogas_to_energy_helps
_a_new_york_facility_toward_self_sufficiency


"Ithaca’s clean-water plant has boosted biogas production and energy generation in a project that will yield $9 million in guaranteed savings over a 20-year contract. The Ithaca (New York) Area Wastewater Treatment Facility now generates nearly half its electricity on site, and the plant team hopes a new biogas system can eventually meet most if not all power needs."

Dubuque [IA] Resource Recovery Facility Keeps It Sustainable

Treatment Plant Operator, June 2015, by Doug Day.
http://www.tpomag.com/editorial/2015/06/dubuque_resource_recovery_
facility_keeps_it_sustainable


"An Iowa city’s $38 million [wastewater treatment] facility renovation includes combined heat and power, biosolids reuse, effluent heat recovery, water-saving landscaping, and more."

Mining for Lithium in Geothermal Brine: Promising but Pricey

Power Magazine, Mar. 2015, by Gail Reitenbach.
http://www.powermag.com/mining-for-lithium-in-geothermal-brine-promising-but-pricey/?printmode=1

"Brine, the waste stream of the geothermal power production cycle, is usually considered a nuisance. High in corrosive minerals, even when reinjected, it’s challenging to manage. So when Simbol Inc. showed it had a way to turn this waste stream into a revenue stream by mining it for high-value minerals like lithium, a lot of people got excited. However, just as this article was going to press, a lot of people got laid off."

Watts in a Drop of Water: Savings at the Water-Energy Nexus

ACEEE White Paper, Nov. 5, 2014, by Rachel Young. [Free registration required to view full-text.]
http://aceee.org/white-paper/watts-in-drop-water

"This paper shows a range of energy intensities for water and wastewater services and in residential hot and cold water. We draw from existing data to develop national estimates of energy savings associated with water savings, including energy used in water conveyance, water heating, and water and sewage treatment."

Geothermal Heating and Cooling Save Energy at a Maine Composting Site

Treatment Plant Operator, Oct. 2014, by Doug Day.
http://www.tpomag.com/editorial/2014/10/geothermal_heating_and_cooling
_save_energy_at_a_maine_composting_site


"A Maine composting facility creates beneficial recycled products, and does it with less energy, thanks to innovations like geothermal heating and cooling."

Industrial Facilities Profit From a Total Systems Approach to Wastewater Treatment

Treatment Plant Operator, Oct. 2014, by Chandler Johnson.
http://www.tpomag.com/editorial/2014/10/industrial_facilities_profit_from_a
_total_systems_approach_to_wastewater_tr


"Industries that must treat or pretreat their wastewater face varied challenges. Any given facility’s needs are best met by a total systems approach (TSA) — a fully integrated solution that includes all pieces of the puzzle instead of uncoordinated components and systems. The approach includes a collaborative evaluation up front to understand a facility’s requirements, apply proven designs and materials, and select innovative products that achieve the optimum water quality at the best life cycle cost."
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