COMPLIANCE INFO_1991-1992 - Laserfiche WebLink

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� 9 HE FUTURE �{ = landfills found newspapers deposited in and recycle; surface application using the early 1950s to be legible nearly 40 perforated pipes placed on top of the years later. Leachate recycle efforts cell; and surface application using a r have been demonstrated to speed the bermed retention/infiltration area. For rate at which the residual microbial Worcester County,the recharge well 17 systems achieve stabilization of and surface application options were u, """ T 071t landfills by as much as 80 percent, thus chosen to allow operational flexibility .. allowing earlier final closure. Leachate in all seasons and weather conditions. recycle takes the liquid wastes gener- Contingency disposal in the event of ated by the landfill itself and reapplies system failure for the Worcester County the liquid to the solid waste being system entails hauling leachate to an placed in the cell. The increased offsite wastewater treatment plant. interaction of the leachate with the The expected savings to Worcester t organic components which make up County from this system include cost- much of the volume of the fill speeds effective leachate management and T the biodegradation process dramati- reduced closure and post-closure costs. Cally. Other benefits that arise from this How the system will work was out- innovative approach to leachate man- { lined in the leachate recycle plan agement include the controlled developed by EA for the County. accelerated biodegradation of the solid Leachate collection occurs at the base waste and significantly reduced long- of the landfill cell, and the leachate term risk to the environment. The is conveyed by gravity flow to the County system was the first of its kind collection sumps at the four corners of to be permitted by the Maryland the landfill. The leachate sumps were Department of the Environment. It is s carefully designed to avoid storm event the third full-scale leachate recycle a overflows,problems due to power inter- system operating in the U.S. and one ruptions, and other potential extreme of less than a dozen around the world. a occurrences. Leachate is conveyed to The system will provide a significant 5 onsite storage and then reapplied back step forward in the technology of solid onto the solid waste in the cell. In waste management and an important Ak effect,leachate recycle promotes the tool for public works directors and IM- use of the waste layers in the landfill private landfill owners to use in their T: s cells as anaerobic treatment digesters arsenal of environmental protection and for treatment of its own contaminants. waste disposal techniques. $: Four principal methods of applying the leachate are recharge wells sunk Contact: into the landfill and filled to predeter- Ken Kilmer 301-771-4950 mined levels; spray irrigation, which X Grimm 415-283-7077 allows for both leachate evaporation Lee Gustafson 402-476-3766 + l