1、摘要 随着国民经济的快速发展，我国的印染业也进入了高速发展期，设备和技术水平明显提升，生产工艺和设备不断更新换代，印染企业尤其是民营印染企业发展十分迅速。但是，印染行业生产过程中排放的“三废”，尤其是废水治理不当将会对环境造成严重污染。本设计是关于3000吨/天的印染废水的处理工程，该废水处理后的出水指标按广东省地方标准水污染物排放限值（DB44/26-2001）标准执行。对于印染废水的处理工艺，要求在高效节能，简便易行和经济效益等各方面进行考虑。经过对各种处理工艺进行分析比较后，最终选择工艺是先通过混凝沉淀反应去除大量的悬浮物和色度，然后进入接触氧化池，经过充足的曝气，由好氧微生物将废水中的
2、有机物降解至既定的浓度，再经过二沉池进行沉淀后达标排放。经过该工艺，CODcr处理效率达到90.4。BOD5处理效率达到94.7,SS处理效率达到93.5,色度处理效率达到95.9。关键词：印染废水，混凝沉淀，接触氧化AbstractAlong with the fast development of the national economy, the printing and dyeing industry of our country also entry into the high speed development period, the equipment and the techn
3、ical level obvious promotion, the production craft and the equipment renew to change generation continuously. The printing and dyeing industry, especially which run by private capital, develop very rapidity. But, it will be able to cause serious pollution to the environment when “the three waste”, e
4、specially wastewater, which discharged in the process of production by the printing and dyeing industry, are treated not correctly.This is an original design about treatment of the printing and dyeing wastewater, whose design capacity is 3000m3/d. After wastewater treated, the leakage water target e
5、nforce the GuangDong Local standard of “Water pollutant Discharges Limits”(DB44/26-2001).For the treating process of wastewater treatment, it calls for considering all directions, such as highly active energy conservation, simple and straightforward, economic benefits and so on. After carrying on th
6、e analysis and comparison to different kinds of processing method, I select the method that priority the effluent through the medium of coagulating sedimentation reaction to remove substantive suspended matter and chroma, for into consideration Organic matter degradation solstice vested strength amo
7、ng then ingress contact oxidation pond, transit ample aeration, by aerobe drop wastewater. Repass the Secondary Sedimentation Tanks it is enough to meet the national standards to discharge. After this craft, the CODcr processing efficiency achieves 90.4%. The BOD5 processing efficiency achieves 94.7
8、%, the SS processing efficiency achieves 93.5%, and the chromaticity processing efficiency achieves 90%.Key words：printing and dyeing wastewater，coagulant sedimentation，tangency oxidizes 目 录1 绪论.1 1.1 项目背景.1 1.2 项目状况.21.3 设计原则.2 1.4 设计依据.2 1.5 设计范围.3 1.6 设计水量、水质及治理目标.3 1.6.1 设计水量.3 1.6.2 设计水质.3 1.6.
9、3 治理目标.32 印染生产工艺概况.4 2.1 印染生产概念.4 2.2 化学药品的使用.4 2.2.1 染料.4 2.2.2 助剂.5 2.3 废水特点.53 废水处理工艺设计.6 3.1 常用废水处理工艺.6 3.1.1 物化工艺.6 3.1.2 生化工艺.7 3.2 废水处理工艺的选用.8 3.2.1 工艺的确定.8 3.2.2 工艺流程图.8 3.2.3 工艺流程说明.9 3.2.4 工艺预期治理效果.114 主要构筑物设计.124.1 格栅.12 4.1.1 设计说明.124.1.2 设计计算.124.2 调节池.13 4.2.1 设计说明.134.2.2 设计计算.144.3 混凝反应池.15 4.3.1 设计说明.154.3.2 设计计算.154.3.3 混凝剂的选择.174.3.4 投药量计算.184.4 沉淀池.
