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首页> 外文期刊>International Agricultural Engineering Journal >A new management technique to reduce the risk of groundwater nitrate contamination at a land treatment system (LTS)
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A new management technique to reduce the risk of groundwater nitrate contamination at a land treatment system (LTS)

机译：一种新的管理技术，可减少土地处理系统（LTS）中地下水硝酸盐污染的风险

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摘要

Effluent irrigation is an increasingly popular treatment option due to concern about nutrient additions to rivers and coastal waters. It was learned from a field experiment that land application of effluent on a regular basis, even when the nitrogenloading rate was within fertiliser application guidelines, can still pollute the groundwater. Therefore, there is a need to develop better management options for land treatment systems which reduce the risk of groundwater contamination. Based on the findings of this field scale experiment, a management technique was developed to make the long-term management decisions (i.e. to check the long-term effects of land application of wastewater on groundwater quality) at a land treatment system (LTS). In thisnew management technique, LEACHM (Leaching Estimation and Chemistry Model) was used to deal with both the hydrological and biological aspects of wastewater-irrigated soils. This paper outlines the concept of the new management technique to make management decisions of "how much effluent to apply" at a LTS, the calibration of the LEACHM model, the validation of the new management technique using the calibrated LEACHM model, and wastewater management issues during wet periods at a LTS. The purpose of thenew management technique is to provide information on a real-time basis for supporting operational or management decision making for an effluent-irrigated area. It will be useful for reducing the risk of groundwater contamination at a LTS.
机译：由于担心向河流和沿海水域添加营养，污水灌溉是一种越来越受欢迎的处理方法。从田间试验得知，即使氮负荷率在化肥施用指导范围之内，定期在土地上施用污水仍会污染地下水。因此，需要为土地处理系统开发更好的管理方案，以减少地下水污染的风险。基于该现场规模试验的结果，开发了一种管理技术，以在土地处理系统（LTS）上做出长期管理决策（即检查废水的土地利用对地下水质量的长期影响）。在这种新的管理技术中，LEACHM（浸出估算和化学模型）用于处理废水灌溉土壤的水文和生物学方面。本文概述了用于在LTS上做出“应应用多少废水”的管理决策的新管理技术的概念，LEACHM模型的校准，使用已校准LEACHM模型的新管理技术的验证以及废水管理问题在LTS的潮湿时期。新管理技术的目的是实时提供信息，以支持污水灌溉区域的运营或管理决策。这对于降低LTS的地下水污染风险很有用。

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