化工专业毕业论文--10000吨印染废水处理厂设计.docVIP

摘 要 废水处理厂设计规模 10000m3/d，设计水质水量为：Q=10000m3/d ，CODcr=850mg/L，BOD5=220mg/L，SS=250 mg/L色度 倍。经处理后，应达到下列出水水质：COD≤100mg/ L，BOD5≤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=92.7%,ηSS=87.6%,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 m3/d, the designing quality and quantity of water are: Q=10000m3/d,CODcr=850mg/L, BOD5=220mg/L, SS=250 mg/L,Color degree=500 times. After disposing of it, the quality of water should attain the following standards: COD≤100mg/L，SS≤0mg/L，Chroma ≤ 0 times,reaching 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 90.2%,BOD5 is 92.7%,ηSS is 87.6%,color 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 1.1 印染废水的产生及特点 6 1.2 印染废水的水质及水量分析 7 1.2.1不同产品排放的废水水质 7 1.2.2废水水量 7 1.3 印染