Understanding the synergy between composting and air emissions

Article Abstract:

The emission of volatile organic compounds, sulfur, odor, and hazardous air pollutants from compost piles increases with an increase in temperature and emission of reduced organic sulfur. Adequate uniform aeration decreases the temperature and controls the composting emissions. A study conducted by the Philadelphia Water Department shows that biofilters reduce emissions by almost 50%. An aerated system prototype has been designed which improves air collection and the treatment of exhaust gases. The measurement of emissions is dependent on sampling and on the analytic techniques.

Analysis, Reports, Air pollution, Volatile organic compounds

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Biofiltration -- black box or biofilm?

Article Abstract:

Biofiltration is being viewed as the ideal technology for the conversion of emissions from composting facilities. Biofilm is the thin layer of moisture, whose organic substrate is inhabited by bacteria and other microorganisms which act on absorbed gases from passing air stream. The biofilter is a device which has a porous media for the passage of contaminated air, composed of organic materials, such as compost, wood chips, peat moss and soil, and an air distribution system. Biofilters have a recommended pH of 6.5 to 7.5 and maintain nutrients for appropriate microbial growth.

Filters (Separation), Sanitary engineering, Air, Air purification

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We're in the soils business, remember!

Article Abstract:

The producers and marketers of biosolids can consider themselves a fortunate industry because they have a market of 75 million Americans who engage in gardening as a hobby. Compost facility operators, whether privately-owned or government-operated, should follow six principles in marketing their products. These principles are product consistency, dependable supply, proven performance, regulatory compliance, reasonable pricing and compliance with product specification standards.

Standards, Product information, Soils, Composition, Compost

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