AR 420-49 PDF

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The best way to accomplish this is to screen the end product before distribution. However, the volume and mix of materials also caused some problems with unacceptable levels of contamination. ra

Figure A-7 shows compost windrows at Fort Riley. This type of machine is ideal for smaller or startup operations that do not want to make a large capital equipment investment.

Army Publishing Directorate

Maurice Dorsey State Prog. A horizontal drum with flails or knives rotates at high speed and rides close to the ground to engage the windrow and shoot it to the rear or to the side. Appendix B lists sources of additional information.

Rather, the ae are piled over a series of perforated pipes to which a blower is attached Figure A Three section wood bin. Typically, green, wet plant materials have a low C: Composting is a sr biological decay 420-449 involving many species of microorganisms and invertebrate animals i. Sign In Sign Out. Planners in Federal, State, and local governments, and in the private sector consider a hierarchy of methods for this integrated solid waste management ISWM program: They also have an enclosed area where, in cooperation with State regulators, they are trying different bioremediation strategies on soil contaminated by leaking underground storage tanks.

Military Operations in Low Intensity Conflict.

Army Regulation 420 Series

Windrows are turned with a Scarab straddle turner, which worked very well, although the turner would occasionally get stuck in the mud. Large brushes at the top of the trommel rotate with the trommel to 4220-49 the screen from clogging. N ae for rapid and efficient degradation of organic material. Aerobic Degradation 1 Microorganisms need an adequate supply of oxygen to effectively degrade organics into carbon dioxide CO2humus, and inert mineral compounds.

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This self-propelled or towed machine uses a wide, inclined conveyor to lift the windrow and drop it off the back. Because this was one of the first large scale composting operations in the State of Kansas, State environmental regulators were somewhat stringent in their site requirements, preferring to err on the side of safety.

The logistics involved in af transporting and maintaining these devices makes rentals impractical. Some end uses for compost will dictate what it must look like.

The various compostable materials were 42-49 in three ways, in addition to the landscaping material: Fifteen percent of finished compost is used by DPW grounds crews for landscaping and the rest is used 420-9 land conservation in training areas. However, contractors would be willing to operate a machine at an installation on a periodic basis, because the A PWTB 15 AUGUST contractor’s fee would include maintenance, transportation, and the contractor’s time for operating the machine.

Because the hammer chamber is open, the high speed hammers can eject material a significant distance from the machine unless the operator keeps the tub full. Construction was scheduled to begin shortly thereafter; several years were allowed for the construction and permitting process. Where is it generated? This unit is towed with a tractor or tracked vehicle and powered by its own engine or via a power take-off linkage PTO.

This does not count private citizens composting in their back yards.

Appendix A gives detailed information on composting techniques and equipment applicable to large scale operations at Army installations. These avoided costs may outweigh the expense of the specialized equipment.

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Army Energy and Water Management Program: Policies/Regulations: AR Series

It does not include waste from food processing industries. Includes an interactive bulletin board for questions and answers, and a list of vendors. Staff track the temperature and moisture content of the windrows. Tub hammers close up. University of Wisconsin Extension Comm. Flails and sizing “combs. Table A-4 summarizes the pros and cons of the composting methods discussed above. The installation ISWM program may include any combination of these methods.

This can be done on paper, with a spreadsheet, or with an automated computer program. Carbon and Nitrogen Content 1 Carbon C and nitrogen N are required nutrients for microorganisms to grow and multiply. The selection of the correct method depends on the type of material to compost, the amount of land area available, and the available budget.

PUBLIC WORKS TECHNICAL BULLETIN 420-49-14 15 AUGUST 2000 COMPOSTING FOR ARMY INSTALLATIONS

One barrier to implementing a compost program is unfamiliarity with and expense of the specialized equipment typically used in large-scale compost operations.

In the summer and fall ofthe command decided it was time to begin composting as much as possible to make use of ra large investment in the compost site.

Although composting has not yet become widespread in the Army, some installations have developed successful composting programs. However, of these, temperature is the most important for monitoring. Also, trucks delivering compostable materials could use the scales already at the landfill.

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