Unsatisfactory management of pesticide use in agriculture during the past decades has given rise to pesticide residues in surface and groundwater. Diffuse contamination through percolation, drainage, runoff and spray drift can only account for a minorpart of the pesticide amount found in surface and groundwater. Indeed, 40 to 90 % of surface water contamination by pesticides can be attributed to direct losses such as spillages resulting from filling and leakage of the spray equipment, spray leftovers and technical rest volumes in the tank, pump and booms, etc. (Carter et al., 2000; De Wilde et al., 2007) These point source contaminations which are mainly confined to the filling and cleaning area of the farm can be easily collected. Whereas specialized companies can collect and treat these waste streams at high cost to the farmer, it would be beneficial to do so immediately on the farm. Most on-site physico-chemical systems available are very efficient, but in most cases too expensive. Moreover, complete degradation is not obtained such that further off-site treatment is still necessary. Therefore, biological treatment could be a cheaper, more effective alternative for on-site remediation of pesticide waste streams, making use of micro-organisms that completely degrade the polluting compounds.
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机译：在过去的几十年中，对农药使用的管理不善导致地表和地下水中的农药残留。通过渗滤，排水，径流和喷雾漂移造成的扩散污染仅占地表和地下水中农药含量的一小部分。的确，农药造成的40％至90％的地表水污染可归因于直接损失，例如由于喷雾设备的填充和泄漏，罐头，泵和吊杆中剩余的喷雾剂和技术上的剩余容积而造成的溢出物（Carter等）。 （2000; De Wilde等，2007）。这些点源污染主要集中在农场的灌装和清洁区域，很容易收集。尽管专业公司可以以高昂的成本收集和处理这些废物流，但对农民来说却是有益的。现有的大多数现场物理化学系统都非常有效，但是在大多数情况下太昂贵了。而且，不能获得完全降解，因此仍然需要进一步的异地处理。因此，利用能够完全降解污染化合物的微生物，生物处理可能是一种更便宜，更有效的现场替代农药废物流的替代方法。
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