Grade A Fertilizer

The International Compost Sanitation Forum and Message Board: General Composting Issues: Grade A Fertilizer
Author: Test2 (Test2)
Thursday, July 19, 2012 - 12:04 am
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I@newyorker58 - I am pretty sure the book does not recommend that even the vegi's produced from humanmanure compost be sold off premise, let alone selling the compost ! Then agin there is a liability issue. But i suppose if the compost can be sampled and tested some company may want to try.

Author: Joe (Joe)
Friday, July 13, 2012 - 11:01 am
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Put the entire link in your browser. You can download the document as a PDF.

Author: Joe (Joe)
Friday, July 13, 2012 - 10:56 am
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EPA Document - Control of Pathogens and Vector Attraction in Sewage Sludge:

Look at Chapter 4, page 21 for compost time/temperature requirements:

http://nepis.epa.gov/Exe/ZyNET.exe/30004KS2.txt?ZyActionD=ZyDocument&Client=EPA&Index=1991%20Thru%201994&Docs=&Query=%28compost%29%20OR%20FNAME%3D%2230004KS2.txt%22%20AND%20FNAME%3D%2230004KS2.txt%22&Time=&EndTime=&SearchMethod=1&TocRestrict=n&Toc=&TocEntry=&QField=&QFieldYear=&QFieldMonth=&QFieldDay=&UseQField=&IntQFieldOp=0&ExtQFieldOp=0&XmlQuery=&File=D%3A\ZYFILES\INDEX%20DATA\91THRU94\TXT\00000005\30004KS2.txt&User=ANONYMOUS&Password=anonymous&SortMethod=h|-&MaximumDocuments=1&FuzzyDegree=0&ImageQuality=r75g8/r75g8/x150y150g16/i425&Display=p|f&DefSeekPage=x&SearchBack=ZyActionL&Back=ZyActionS&BackDesc=Results%20page&MaximumPages=10&ZyEntry=2

Author: Joe (Joe)
Friday, July 13, 2012 - 10:49 am
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Sewage Sludge (Biosolids) 503 Standards

http://yosemite.epa.gov/r10/water.nsf/NPDES+Permits/Sewage+S825/


Appendix B to Part 503—Pathogen Treatment Processes

A. Processes To Significantly Reduce Pathogens (PSRP)

1. Aerobic digestion—Sewage sludge is agitated with air or oxygen to maintain aerobic conditions for a specific mean cell residence time at a specific temperature. Values for the mean cell residence time and temperature shall be between 40 days at 20 degrees Celsius and 60 days at 15 degrees Celsius.
2. Air drying—Sewage sludge is dried on sand beds or on paved or unpaved basins. The sewage sludge dries for a minimum of three months. During two of the three months, the ambient average daily temperature is above zero degrees Celsius.
3. Anaerobic digestion—Sewage sludge is treated in the absence of air for a specific mean cell residence time at a specific temperature. Values for the mean cell residence time and temperature shall be between 15 days at 35 to 55 degrees Celsius and 60 days at 20 degrees Celsius.
4. Composting—Using either the within-vessel, static aerated pile, or windrow composting methods, the temperature of the sewage sludge is raised to 40 degrees Celsius or higher and remains at 40 degrees Celsius or higher for five days. For four hours during the five days, the temperature in the compost pile exceeds 55 degrees Celsius.
5. Lime stabilization—Sufficient lime is added to the sewage sludge to raise the pH of the sewage sludge to 12 after two hours of contact.

Author: Joe (Joe)
Friday, July 13, 2012 - 10:29 am
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Here's an EPA document regarding pathogens and compost classification.

http://www.epa.gov/region1/eco/mwra/pdf/j.pdf

Author: Joe (Joe)
Friday, July 13, 2012 - 10:27 am
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Here's a chart showing some compost classification determinants

http://www.co.summit.co.us/DocumentView.aspx?DID=237

Author: Newyorker58 (Newyorker58)
Wednesday, July 11, 2012 - 6:37 pm
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I was wondering about whether the compost produced could be sold as Grade A fertilizer. Would I need any special equipment? Is there a market for composted soil?

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