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Biosolids

WEF Supports California Agencies in Biosolids Suit

June 10, 2008

Composting Toilets Serve Bronx Zoo Visitors

December 13, 2007

Douglasville, Ga., Reuse Facility Wins Award

November 30, 2007

EPA Announces Recipients of National Clean Water Act Recognition Awards

October 15, 2007

Science Reconsiders the Value of Land Application

October 1, 2007By Ellen Z. Harrison

New guide offers additional management practices to ensure farm productivity in the northeastern United States

The Guidelines for Application of Sewage Biosolids to Agricultural Lands in the Northeastern U. S.offers the best science available and seeks to protect the land resource base, emphasizing agricultural productivity in perpetuity. Scientists from Cornell, Rutgers, the University of Massachusetts, Penn State, and the University of New Hampshire developed the document, which is an updated version of a 1985 document, Criteria and Recommendations for Land Application of Sewage Sludge in the Northeast.

WERF Seeks Proposals for Pathogen Risk Assessments of Biosolids

September 27, 2007

Water & Wastewater News Roundtable 2007

June 1, 2007By Water and Wastewater News Staff

Despite the roar from the municipal water and wastewater industry about the lack of funds for infrastructure, Water & Wastewater News’ roundtable participants seemed to agree that the money is “out there,” it is just a matter of finding the right source.

Back to the Basics

September 1, 2005By Steve Harris

A new biostimulant economically treats wastewater sludge by breaking it down into gas, ash, and water

Despite the very best in design, there does come a time in every wastewater lagoon system when sludge must be removed.

Boosting Polymer Power

September 1, 2004By Barry Bracken

A new mixing regime optimizes the work value of polymer serving the biosolids dewatering operations at the Lancaster, Pa., wastewater treatment plant

Sludge dewatering operations at the Lancaster wastewater treatment plant run continuously five and a half days every week, processing an average of 95 cake tons per day. Before it adopted a new polymer preparation approach to more fully activate cationic polymer, belt-press dewatering at the facility had become highly expensive and inefficient.

Sorting Through the Muck

September 1, 2004By Karen DeCampli

An overview of the technologies used to convert municipal wastewater residuals into useful products

Biosolids -- in the United States, more than 19,000 municipal wastewater treatment facilities generate 7 million dry tons of this material every year. Biosolids are the nutrient-rich organic materials resulting from the treatment of sewage sludge, which is the name for the solid, semi-solid, or liquid untreated residue generated during the treatment of domestic sewage in a treatment facility. Wastewater treatment plants spend $1.1 billion to treat and dispose of the stuff. Over 80 percent of it is recycled and reused.