化工专业10000吨印染废水处理厂设计论文.doc

化工专业毕业论文--10000吨印染废水处理厂设计 摘 要 废水处理厂设计规模 10000m3d设计水质水量为Q 10000m3d CODcr 850mgLBOD5 220mgLSS 250 mgL色度 倍经处理后应达到下列出水水质COD≤100mg LBOD5≤20mg L SS≤70mg L色度≤50倍 达《污水综合排放标准》GB8978-1996中一级标准 本工程方案设计依据有关环境保护在污水中的要求采用水解酸化SBR混凝沉淀工艺处理纺织印染废水在详细方案比较的基础上选择了如下处理工艺流程 印染废水→格栅→调节池→水解酸化→SBR→混凝沉淀池→→出水 污泥外运←污泥脱水←浓缩池 经设计可知COD 90 BOD5 927ηSS 876色度9且节约用地提高绿化降低能耗的理念在设计中得到充分的实践符合新时代环保的要求 关键词印染废水 水解酸化 SBR 混凝 Abstract The designing scale of waste water treatment plant is 10000 m3d the designing quality and quantity of water are Q 10000m3dCODcr 850mgL BOD5 220mgL SS 250 mgLColor degree 500 times After disposing of it the quality of water should attain the following standards COD≤100mgLSS≤0mgLChroma ≤ 0 timesreaching theⅠstandard of Integrated wastewater discharge standard GB 8978-1996 The design of this project is in accordance with requirements of the environmental protection in the wastewater It uses the hydrolytic acidification-SBR-coagulation-sedimentation process to deal with the wastewater in textile printing Based on comparison of the detailed program we select the following processes Printing and Regulating Hydrolytic SBR dyeing wastewater →Grids→ pond → acidification→pond ↓ Carry Dehydrate Pool Coagulation out Sludge← Sludge ←enrichment←sedimentation tanks→Drainage Through designing we can know that the result of COD is 902BOD5 is 927ηSS is 876color degree is 93 It not only gains good economic and social benefits but also fully puts the ideas of saving land economically improving virescence and reducing energy consuming into the practice while designing which is in conformity with new era environmental needs KEY WORDS textile printing and dyeing wastewater hydrolytic acidification SBR Coagulation 目 录 3 前 言 5 第一章 绪论 6 11 印染废水的产生及特点 6 12 印染废水的水质及水量分析 7 com品排放的废水水质 7 com量 7 13 印染废水的危害 7 14设计任务 8 com 本毕业设计课题的目的和要求 8 com设计课题的技术要求与数据 8 第二章 工艺流程确定 10 21 印染废水概况 10 22工艺流程