三氯化铁絮凝沉淀和生化组合工艺处理百菌清生产工艺废水
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摘要
百菌清生产过程中产生的废水具有高毒、高化学需氧量(COD)和高氨氮含量及高盐分等特点,采用三氯化铁絮凝沉淀—蒸发—上流式厌氧污泥床—接触氧化—反硝化/硝化—脱色斜管沉淀组合工艺进行处理。运行结果表明,三氯化铁絮凝沉淀可以有效降低废水中的高毒性氰离子和COD含量;蒸发处理可以有效去除盐分及部分氨氮;厌氧生化处理可以将预处理后残留的间苯二腈等有机物降解,转化为小分子酸,从而提高废水的可生化性;整个生化系统可以有效降低百菌清生产废水的COD和氨氮质量浓度。百菌清生产废水经处理后,可以达标排放。
The wastewater of a pesticide factory exhibited high toxicity, high COD and high ammonia-nitrogen. A combined treatment process of ferric chloride flocculation, evaporation, upflow anaerobic sludge blanket(UASB),biological contact oxidation, denitrification/nitrification, inclined tube sedimentation was employed. The results showed the majority of CN-can be removed by the ferric chloride flocculation. Furthermore, the UASB process could converse the isophtalonitrile into short-chain carboxylic acids. The biochemical system could effectively reduce the amounts of COD and ammonia-nitrogen. The effluent quality could comply with integrated wastewater discharge standard after the treatment processes.
The wastewater of a pesticide factory exhibited high toxicity, high COD and high ammonia-nitrogen. A combined treatment process of ferric chloride flocculation, evaporation, upflow anaerobic sludge blanket(UASB),biological contact oxidation, denitrification/nitrification, inclined tube sedimentation was employed. The results showed the majority of CN-can be removed by the ferric chloride flocculation. Furthermore, the UASB process could converse the isophtalonitrile into short-chain carboxylic acids. The biochemical system could effectively reduce the amounts of COD and ammonia-nitrogen. The effluent quality could comply with integrated wastewater discharge standard after the treatment processes.
引文
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[4]Chaves A,Shea D,Danehower D.Analysis of Chlorothalonil and Degradation Products in Soil and Water by GC/MS and LC/MS[J].Chemosphere,2008,71(4):629-638.
[5]WHO.The WHO Recommended Classification of Pesticides by Hazard and Guidelines to Classification[M].Geneva,Switzerland:Word Health Organization,2009.
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[10]张羽,陶博.兼氧接触水解酸化预处理化工废水的试验研究[J].工业用水与废水,2008,39(4):40-42.
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[12]吴玉,田刚,司亚安,等.兼氧调节-曝气-混凝沉淀工艺处理印染废水[J].给水排水,2009,35(10):67-69.
[13]张斌,朱雷,张蕾,等.溶气气浮-水解酸化-接触氧化工艺处理涂料废水[J].给水排水,2015,41(12):59-61.
[14]刘晓霞,王家彩,宋明川.催化氧化-EGSB-接触氧化处理PVB废水工程实例[J].环境科技,2015,28(1):28-30;34.
[15]江滨.水解酸化-接触氧化-混凝气浮组合处理印染废水[J].工业水处理,2012,32(1):84-86.
[16]潘碌亭,余波,王文蕾.内电解-水解酸化-接触氧化-氧化絮凝处理印染废水研究[J].环境污染与防治,2011,33(4):1-6.
[17]王白杨.废水生物处理脱氮原理与新工艺[J].江西师范大学学报(自然科学版),2006,30(4):399-403.
[18]沈耀良,王宝贞.废水生物处理新技术:理论与应用[M].北京:中国环境科学出版社,1999.
[19]袁林江,彭党聪,王志盈.短程硝化-反硝化生物脱氮[J].中国给水排水,2000,16(2):29-31.
[20]操家顺,章震,李超,等.电子供体配比条件对反硝化微生物燃料电池脱氮性能的影响研究[J].环境科技,2015,28(6):1-6.
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