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生物酶水质稳定剂对炼油厂循环水的处理研究 总被引:2,自引:0,他引:2
采用了一种由微生物及酶制剂组成的生物酶水质稳定剂对循环冷却水进行处理。向4个相同的水样中投加不同体积分数的生物酶制剂,通过生物酶及微生物的作用,对水样的COD、氨氮进行测定。结果表明,投加生物酶制剂的水样与未投加生物酶制剂的水样相比,对COD、氨氮的降解起到了显著的效果,并且随着生物酶制剂体积分数的提高,COD、氨氮的降解效果越来越好,处理后的水质呈中性。当生物酶制剂的体积分数为水样体积的32‰时,COD的去除率高达89%,氨氮的去除率高达95%。 相似文献
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吹脱法处理高浓度氨氮废水的研究 总被引:1,自引:0,他引:1
在拉西环填料塔内,采用空气吹脱法处理模拟废水中的氨氮。按F—HZ—HJ—SZ-0016标准测定模拟废水中氨氮质量浓度。通过实验考察了模拟废水pH值、空气流量、废水温度对氨氮吹脱效率的影响,确定了适宜的操作条件为:pH值13,空气流量150L/min,温度60℃。在上述条件下,氨氮吹脱效率达87.5%。 相似文献
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介绍生化法对半导体工厂废水中的氨氮进行处理的系统,主要对运行控制进行重点探讨,且对工艺优化提出初步设想。 相似文献
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煤矸石作为一种巨量固体废弃物,研究其开发利用途径,对建设环境友好、资源节约型国家具有重要意义。以内蒙古某煤矸石为原料、模拟稀土生产的氨氮废水为吸附对象,采用碱熔-陈化-晶化工艺,研究了焙烧温度、陈化过程液固比、陈化时间、晶化时间对合成沸石吸附模拟废水中氨氮性能的影响。结果表明,在焙烧温度为600 ℃、陈化过程的液固比为14 mL/g、陈化时间为20 h、晶化时间为1 h条件下合成的煤矸石沸石对模拟废水中的氨氮具有较好的吸附性能,对应的氨氮吸附量为3.74 mg/g,去除率达74.80%。产品的SEM和XRD分析表明,碱熔使煤矸石组成发生了改变,碱熔产物经陈化-晶化,获得了结晶度较好的煤矸石合成沸石,该沸石属于A型沸石。 相似文献
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The aim of the project was to assess the nutrient removal within integrated constructed wetlands (ICW). The study was based on twelve free-water surface ICW treating farmyard runoff in Ireland.The principal design criterion leading to adequate effluent water quality (i.e. molybdate reactive phosphate (MRP) less than 1 mg/L) from ICW is that the total wetland area needs to be sized by a factor of at least 1.3 times the farmyard area. It is common practice to construct at least four wetland cells in series with individual aspect ratios of less than 1:2 (width to length).Most of the MRP concentrations after ICW treatment were in agreement with Irish urban wastewater standards for discharge to sensitive waters, which can be used as a benchmark to measure ICW performance and which are usually applied to ICW even if it may appear to be too stringent. Furthermore, the number of denitrifying bacteria detected in the benthos of ICW systems is higher than the number of ammonia-oxidising bacteria. Anoxic conditions at the wetland bottom create conditions which are favourable for denitrifying bacteria. It follows that sediment and litter components of the ICW system support denitrification.The outflow water quality was within recommended guidelines. The study suggests that phosphorus exported from an ICW system was similar to the typical background concentrations of phosphorus export rates from land to water. 相似文献
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高矿化度油田污水的微生物处理中间试验 总被引:1,自引:1,他引:1
根据八面河油田现场高矿化度采油污水的特征,利用高效可降解石油的高耐盐微生物,采用厌氧酸化水解-好氧接触氧化工艺进行了较为系统地研究。结果表明,八面河油田采油污水虽然矿化度很高,但完全可以应用耐盐微生物对其进行处理,实现采油污水的达标排放。隔油池-厌氧酸化水解池在八面河油田高矿化度采油污水COD去除中起主要作用,平均COD去除率在50.2%。系统去除氨氮的最佳气水体积比在14~16。单一接触氧化工艺与酸化水解-接触氧化工艺相比,去除COD效果都能满足国家污水二级排放标准,前者去除氨氮效果稍好,平均氨氮去除率约高4.2%。 相似文献