dairy farm effluent Articles

  • Anaerobic Digestion at Dairy Farms

    The need to upgrade dairy waste management practices to overcome pollution problems is leading more farmers to seek solutions with anaerobic digestion technology. Two recent examples of this trend are underway at California sites. The Cal Poly Dairy is located adjacent to the California Polytechnic State University campus in San Luis Obispo. The dairy milks 180 cows with a total population of ...


    By BioCycle Magazine

  • Asian dairy churns out grade AA effluent

    ' The AIRE-O2® aerators have excellent oxygen transfer, easy maintenance and operation.' Problem Founded in 1937, this dairy cooperative located in Asia has played a leading role in the development of the industry in its country. Its mission is to 'supply quality products for safe-guarding the nation’s health' in all its product line. The same attention to quality standards that drives ...

  • Treatment of farm dairy effluent with hybrid upflow multilayer bioreactor and activated sludge module

    Biological removal of nitrogen and carbon from farm dairy effluent (FDE) was studied with two laboratory-scale systems following nitrification and denitrification processes. Each system consisted of an upflow multilayer bioreactor (UMBR) as a pre-denitrification unit, an aeration tank (AT) as nitrification unit and a secondary clarifier. The optimization of two operational variables, total ...


    By IWA Publishing

  • Dairy Digester Opens Doors On Maryland Farm

    Kilby Inc., a 600-cow dairy operation located in Colora, Maryland, has the only operational commercial anaerobic digestion (AD) system in the state. In 2009, Kilby Inc. (the dairy farm and milk production business) began construction of a covered lagoon digester, which started operating in March 2011. The digester input consists of flushed cow manure (98% by volume) and food waste (2%), including ...


    By BioCycle Magazine

  • Adding Value To On-Farm Digesters

    ANAEROBIC digestion of dairy manure and food processing residuals in Michigan is not a new undertaking. Over the years, 11 farm digesters were constructed in the state, of which four are still operational, reports Michelle Crook of the Michigan Department of Agriculture in a presentation in the spring of 2007. “Three of the operating digesters are for livestock manure and one is for food ...


    By BioCycle Magazine

  • Environmental input–output analysis of the New Zealand dairy industry

    This work presents data and analysis quantifying the total (direct and indirect) resource use and outputs (products and pollutants) of the New Zealand dairy industry for the year April 1997 to March 1998. It also identifies those sectors supplying the dairy industry which make significant indirect contributions to its total inputs and outputs. Although this data is 14 years old, it is the only ...


    By Inderscience Publishers

  • Entrepreneur Connects Generators To AD

    A Northeast company brings anaerobic digestion and renewable energy to the feedstock sources in Ohio and New York State. Western New York is one of the top dairy-producing regions in the U.S. The by-products of making milk, cream, yogurt and other dairy products have certain characteristics that make them ideal fuel for anaerobic digesters designed to produce methane gas for the ...


    By BioCycle Magazine

  • New Mexico Business Weekly Passing biogas: R-Qubed project converts cow manure to methane

    Some locals sarcastically joke that the stretch of dairy farms along Interstate 10 south of Las Cruces should be re-named “Buenos Aires” (fresh air). It’s a reference to a less than aromatic sector of I-10 in southern New Mexico, not a reflection on the capital of Argentina. But that soon might change, thanks to a US$72 million plan by R-Qubed Energy Inc. of El Paso to build ...


    By entec biopower gmbh

  • Industry Takes Shape: Why Digesters Make Dollar Sense Now

     THIRTY years ago, when I was a college student studying ways to convert manure to electricity, we speculated that the 1970s would be the decade of the innovators, the 1980s for the launch of operating projects, and the 1990s when the mainstream adopted the technology. Now I think our predictions for the mainstream were ten to 15 years premature — but it is happening! During the 1990s, the ...


    By BioCycle Magazine

  • Digester Developer Taps Natural Gas Markets

    IN the late 1990s, Dan Eastman and two colleagues were researching business opportunities in the renewable energy industry. They were looking for a commercially viable technology that could take renewable energy from an experimental phase to a solid business investment. In 1999, Eastman and his partners founded Microgy, Inc., with its base in Wisconsin. The company licensed the Xergi anaerobic ...


    By BioCycle Magazine

  • Financing an anaerobic digester

    LENDERS are generally well disposed to projects that diversify revenues while lowering costs and mitigating risks. Add a ready source of equity and you are well on the way toward financing a project that is a win-win proposition for the lender and the project developer. Such is the case with the anaerobic digester project at Geerlings Hillside Farm (GHF). The Geerlings's 8,000-head hog farm is ...


    By BioCycle Magazine

  • BioCycle world

    Composters and organics recyclers are encouraged to lend support to the U.S. Composting Council’s education campaign (See “Composting Council Advocates Carbon Offsets In Climate Change Bill,” BioCycle September 2009) by signing an online petition: http://www.petitiononline.com/uscc2009/petition.html. The Solid Waste Association of North America ...


    By BioCycle Magazine

  • Tapping the potential of codigestion

    Codigestion refers to processing multiple biodegradable substrates (feedstocks) in an anaerobic digestion (AD) system. A more contemporary definition refers to the digestion of a combination of select biodegradable feedstocks with a base substrate that an AD system was designed to handle. The intent is to maximize the production of biogas (i.e., renewable energy) by adding substrates that produce ...


    By BioCycle Magazine

  • Regional Roundup

    NATIONAL PRESS CLUB DIVERTS FOOD WASTEThe National Press Club (NPC) in Washington, D.C. started diverting its pre and postconsumer food waste to composting in September. Working with EnviRelation, an organics hauler, NPC has achieved a 75 percent volume reduction in waste, filling one instead of four 16-cubic foot containers per day with trash. This is expected to equal two tons of food waste ...


    By BioCycle Magazine

  • Biocycle World

    OPTIONS FOR MANAGING COMPOST LEACHATE DURING EXCESSIVE RAINFALL CONDITIONSAn Information Sheet prepared by The Composting Association in the United Kingdom gives an overview of available options for managing “liquor” (leachate) produced at composting sites - especially following the excessively rainy spring/summer of 2007. “Compost leachate” can be described as water that has changed in ...


    By BioCycle Magazine

  • Compost science journal of advocacy and foresight

    SEVERAL months ago, I started on a journey through the pages of Compost Science, beginning with the Spring, 1960 inaugural issue. I was confident that I could whip through the articles and news items in the several hundred issues of the magazine between 1960 and 2009, and be prepared to write this article for BioCycle’s 50th Anniversary Commemorative Edition. Granted, there were interruptions, ...


    By BioCycle Magazine

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