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2,4-D、二甲四氯、莠去津和草甘膦等农药,目前这些包括种植者在内的与农业生产有关的人士都耳熟能详的农药产品,它们在生产过程中,却不可避免地会产生含量在10%~20%的大量高浓度、高含盐有机废水。对于这类废水,一般应用蒸发浓缩除盐的方法进行处理,而如此处理虽然解决了盐分对生化处理的影响,却可能得到大量夹杂了有毒、有害有机污染物的废盐,这些废盐给企业的“三废”处理带来困难,同时造成大量工业盐的浪费。据笔者近期对相关园区的农药企业走访发现,废盐、残渣问题已经成为急需解决的问题。
2,4-D, MCPA, Atrazine and glyphosate. At present, none of these pesticide products, which are related to agricultural production, including growers, are inevitable in the production process Will produce a large amount of 10% to 20% of high concentration, high salinity organic wastewater. For this type of wastewater, the general application of evaporative concentration desalination method for processing, while such treatment to solve the salt on the impact of biochemical treatment, it may get a lot of mixed with toxic and harmful organic pollutants of waste salt, the waste salt to the enterprise Of the “three wastes” processing difficulties, while causing a lot of industrial waste of salt. According to the author’s recent visit to the park’s pesticide companies found that waste salt, residue problem has become an urgent need to solve the problem.