April 1979 RAIN Pa e 17 of wastewater treatment, the type and amount of industrial • Philadelphia and Chicago have trial composting sites in opera- waste effluents that are discharged into the system. Abate tion. San Francisco and San Jose are having hearings on composting. ment 0 the e chemicals prior to their introduction to the composting process by limiting industrial wastes and by The following resource hould help your community ex pretreatment are two obvious solutions to the problem. A plore this otpion and the abo e cities provide operative January 1979 study examines the use of peat moss columns models to visit and learn from. (Thanks to Sarah Fast, James to remove cadmium from wastewaters. Cadmium is one of Parr, John Walker, and George Crombie). tbe mo~t potentially harmful metals that is readily absorbed by plants. Other studies have shown that soil pH and zinc " cadmium ralio are critical to its absorption. There is a we~lth The following people are currently composting or researching (If detailed technical and chemical information on the subject composting: available and these are referenced below. Dr. James Parr U.S.D.A. Biological Waste Management & Organic Resources Lab ommunity-s ale composting seems to be a very appropri Agricultural Research Center ate treatment f urban " wastes" in many locales. The follow- Beltsville, MD 2070S 109 cIties are currently composting: 301/344-3163 The Beltsville Research Center is putting together a list of publicaLos Angeles, California Rochester, New York tions, reprints and articles that they have available on composting. Bangor, Maine National Park Service near Some of their reprints are listed below. Write to them for a complete Durham, New Hampshire Harper's ,Ferry, W. Virginia list; they are also happy to answer questions of municipalities on Stratford, Connecticut Camden, New Jersey composting. Beltsville, Maryland (sludge Windsor, Ontario, Canada from Washington, D.C.) COMPOSTING WITH FORCED AERATION ,..-----~- . PEA'OAATED PIP! FILTE" PILI! SCREENED COMPOST schematic dia.,UD of the Belleville A.rated Pile Method for compoatin, sewace slud,... FILTER PILE SCREENEO dia.,UD of Belleville A.rated Eztended Pile Method for compoatin,sewa,e Ilud,ea. COMPOST Other Composting Information Sources: Small Farm Energy Project Newsletter, P.O. Box 736, Hartington, NE 68739. Blobaum, Roger, et al. 1978. Urban Waste Project: Systems Analysis of Waste Recycling for Omaha-Council Bluffs Region, Roger Blobaum. 1340 42nd St., Suite A. West D Moines. IA S026S. Epstein, E.• G. B. Willson, W. D. Burge, D. C. Mullen and N. K. Enkiri. 1975. A forced aeration system for composting wastewater, sludge. J. Water Pollution Control Fed., 48(4): 688-694. Tietjen, C. and S. A. Hart. 1969. Compost for agricultural land? J. Sanitary Engineering Div., Proc. Amer. Soc. Civil Engineers, pp. 269-287. Walker, J. M. 1973. Composting sewage sludge: why? Compost Sci. 14(4): 10-12. Willson. G. B., E. Epstein, and J. R. Parr. 1977. Recent advances in compost technology. In Proceedings of the Third National Conference on Sludge Management. Disposal and Utilization, p. 167-172. John Walker Municipal Technology Branch (WH-S47) U.S. Environmental Protection Agency Washington, DC 20460 George Crombie Public Works Director Town of Durham Durham, NH 03824 603/868-SS71 Jerry Goldstein Compost Science/Land Utilization P.O. Box 351 Emmaus, PA 18049 21 S/967-401O City of Camden. New Jersey Professor Mark Singley or Michael Bolan Camden City Composting Project P.O. Box 231 Cook College New Brunswick, NJ 08903 Camden is composting, Rutgers at New Brunswick is doing the research. Composting by Clarence Golucke and Sensible Sludge by Jerome Goldstein are both essential reading and not be neglected. Both published by Rodale Press. 33 E. Minor St.• Emmaus, PA 18049. Compost Toilet/GreywaterlDemand Water Heater User Feedback We're planning to do an update on compost toilets, greywater systems. and demand water heaters in an upcoming issue of Rain. We'd like to include feedback from other people who actually have a unit in operation, or sources for good units we haven't mentioned in Rain. We'll be including feedback from Oregon's experimental compost toilet and greywater testing program, our friends' and our own experience with various demand water heaters, and your experiences. Let us know what kind of unit you have, cost, how many peopic are using it, problems you've encountered, how you've resolved them, and whatever else other people ought to know. Deadline May 5, 1979. - TB
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