关 键 词：

毕业设计

资源描述：

bysj01-016@三唑磷农药废水处理工艺设计,毕业设计

内容简介：

I 三唑磷农药废水处理工艺设计 摘 要： 三唑磷 因为其低毒，高效，广谱杀菌性而在农业生产中广泛应用，但是在生产过程中，会产生大量的废水，这些废水含有高浓度的有机物质 。废水中含有的农药中间产物化学性质稳定，可生化性差，难分解 ,具有很强的毒性，很高的色度，还会散发刺激性气味。这些都严重的污染了环境。 这种废水的处理已经成为废水处理工程的瓶颈，一般的方法是将废水稀释之后再进行生化处理。当前已具规模的处理方法有生化法，吸附法和焚烧法。 采用预氧化 ClO2催化氧化 SBR 法对农药废水进行处理 。 在 预氧化 过程中 ， pH 为1.38， 停留时间 为 1h， COD 去除率为 10%； 在 催化氧化 过程中 ， pH 为 6-7， ClO2投加量为 1mg/L， 停留时间为 1h； 最后用 SBR 生化法进行处理，出水达到污水综合排放（ GB 8978-1996）一级排放标准 。 关键词： 三唑磷 催化氧化 SBR 生化法 农药废水 nts II Process Design of Pesticide Triazophos Wastewater Treatment Abstract： Triazophos is widely used in agriculture because of its low-toxic, high-effective and broad-spectrum, but in the process of its production, large volume of wastewater need to be deal with. The wastewater contain high concentration of organic substance, the stable intermediates are hard to remove and degraded. Their serious toxicity, black color and odorous smell pollute the environment seriously. The treatment of the waste now is a bottleneck in the engineering. The normal method to treat the waste is to dilute it first and then treat it by biodegradation. Now the treatment in industry scale is biodegradation, absorption and burning. The preoxidation/chlorine dioxide catalytic oxidation/SBR biodegradation process was used to treat the wastewater from production of triazophos. In the preoxidation process, the pH was 1.38 and reaction time was 1 hour, the removal rates of COD was 10%; In the catalytic oxidation, the pH was 6-7, chlorine dioxide dosage 1.0g/L and reaction time is 1 hour; After biodegradation process, the effluent is acceptable to meet the requirement of class I in The national wastewater discharge standard(GB 8978-96).