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首页> 外文会议>British Crop Protection Council International Congress of the Crop Science and Technology >Practical on-farm bioremediation systems to limit point source pesticide pollution
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Practical on-farm bioremediation systems to limit point source pesticide pollution

机译：实用的农场生物修复系统限制点源农药污染

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Activities involving the handling, use and disposal of pesticides, which generally take place on hardstandings in farmyards, can represent pollution sources. Impermeable surfaces with rapid runoff limit opportunities for in situ pesticide degradation.More permeable surfaces allow water and residues to infiltrate into the substrate where opportunities exist for degradation processes to take place. Specifically designed bioremediation systems, including biobeds (mixture of straw, topsoil and peat-freecompost), provide enhanced conditions for microbial degradation. A research project in the UK has investigated the performance of three different pesticide handling and washdown areas, linked to bioremediation systems, and designed to minimise the riskof surface water contamination whilst taking account of the local groundwater vulnerability. Monitoring of the quality and quantity of water entering and leaving the systems was undertaken. Close management of the water within these systems was extremelyimportant to their pesticide removal efficiency. Artificial applications of a suite of pesticides, with variable physico-chemical properties, were made to the sites to simulate severe contamination incidents. Pesticide concentrations greater than 100,000 mu g/litre were measured entering the bioremediation systems. All three systems had an extremely effective pesticide removal performance throughout the monitoring period. Pesticide concentrations in the leachate discharging from the treatment systems generally remained below 0.5 mu g/litre.
机译：涉及杀虫剂的处理，使用和处理的活动，通常在畜士中的艰辛上进行，可以代表污染源。具有快速径流限制机会的不可渗透的表面，用于原位农药降解。渗透性表面允许水和残留物渗入基板中，其中存在用于脱硫过程的机会。专门设计的生物修复系统，包括生物化（秸秆，表土和泥炭Freecompost的混合物），为微生物降解提供增强的条件。英国的研究项目研究了与生物修复系统相关的三种不同农药处理和清洗区域的性能，并旨在最大限度地减少表面污染的风险，同时考虑到当地地下水脆弱性。进行了监测进入和离开系统的水的质量和数量。密切管理这些系统内的水非常重要，但它们的杀虫剂去除效率非常重要。套装杀虫剂的人工应用，具有可变性物理化学性质，对部位进行了模拟严重的污染事件。在进入生物化系统中测量大于100,000μg/升的农药浓度。所有三种系统在整个监测期内具有极其有效的农药去除性能。从治疗系统中排出的农药浓度通常仍然低于0.5μg/升。

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