河海大学环境工程专业毕业设计
摘 要
本设计为南通市某印染公司废水处理，该公司主要从事布的漂洗加工，生产过程中产生生产废水（包括退浆废水、煮炼废水、漂白废水、丝光废水和染色废水等）及少量的生活污水，日排放量6000t。该类废水具有COD较高、可生化性较低、色度较高、废水悬浮物浓度较高等特点，且污水中污染物的形成成分复杂，水质波动大，是工业废水中比较难处理的废水类型之一。如果直接排放水体或者处理不当将会对人类的生产、生活造成严重的影响。公司计划新建污水处理站1座，要求处理后达到《江苏省纺织染整工业水污染物排放标准（DB 32/670-2004）》的一级标准。本设计针对该类水质特点，在详细方案比较的基础上，选择了水解酸化- 接触氧化- 混凝工艺，其处理效果明显优于传统工艺，对BOD、COD、SS有很好的处理效果，并具有能耗低、产泥量少的特点，且剩余污泥可直接脱水。沉淀池后设置混凝沉淀池，作为三级处理，可获得较好的出水水质，使废水达标排放。
其处理工艺流程如下： 鼓风曝气
印染废水→格栅→调节池→水解酸化池→生物接触氧化→沉淀池→混凝→终沉池→出水
外运←脱水车←重力浓缩 经技术经济分析后得到良好的经济效益和社会效益。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、生物接触氧化、混凝
南通6000m3/d印染废水处理设计 第1页 共83页
河海大学环境工程专业毕业设计
Abstract
The design for a printing company in Nantong city wastewater treatment, rinsing process of the company is mainly engaged in the production of cloth, the production process of waste water (including the desizing wastewater, scouring wastewater, bleaching, mercerizing and dyeing wastewater wastewater wastewater etc.) and a small amount of domestic sewage, the emissions of 6000t. This kind of wastewater with high COD, low biodegradability, high chroma, effluent suspended solids concentration higher characteristic, and the formation of pollutants in wastewater complicated composition, variation of water quality, is one of the industrial waste water difficult to deal with waste water type. If the direct discharge of water production, life or improper handling will cause serious effect on human. The company plans to build sewage treatment station 1, require treatment to \province textile dyeing and finishing of industrial water pollutant discharge standards\32/670-2004) to the first class standard. This design for the water quality characteristics, based on the detailed scheme comparison, chose the hydrolysis acidification - contact oxidation - coagulation process, the treatment effect is obviously superior to the traditional process, has good treatment effect on BOD, COD, SS, and has the characteristics of low energy consumption, less sludge, and the remaining sludge can be directly dehydration. The sedimentation tank is arranged after the coagulation sedimentation tank, as a three level processing, can get better water quality, wastewater discharge standards. The treatment process is as follows: Blast aeration
Printing Pool Biological Final
and dyeing Regulation acid contact Sedimentation sedimentation The wastewater→Grille→pool→hydrolysis→oxidation→tank→Coagulation→tank→effluent
Sinotrans←Dehydration car←Gravity concentration Good economic and social benefits obtained by technical and economic analysis. And the economical use of land, raise afforest, reduce energy consumption concept fully practice in the design, to meet the new era of environmental protection requirements.
Keywords: printing and dyeing wastewater, hydrolytic acidification, biological contact oxidation, coagulation
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河海大学环境工程专业毕业设计
目录
第一篇 设计说明书 ............................................................................................................. 8
1 概述........................................................................................................................................ 8
1.1 毕业设计题目.............................................................................................................. 8 1.2 毕业设计的目的.......................................................................................................... 8 1.3 毕业设计任务.............................................................................................................. 8 1.4 设计资料...................................................................................................................... 8
1.4.1城市概况............................................................................................................. 8 1.4.2 气候条件............................................................................................................ 9 1.4.3水文条件............................................................................................................. 9
2 设计依据................................................................................................................................ 9
2.1 设计依据规范.............................................................................................................. 9 2.2 污水处理设计流量.................................................................................................... 10 2.3 污水处理进出水水质................................................................................................ 10
2.3.1 进水水质.......................................................................................................... 10 2.3.2 出水水质.......................................................................................................... 10 2.3.3处理程度的确定............................................................................................... 11
3 印染废水处理工艺选择...................................................................................................... 11
3.1 印染废水的来源........................................................................................................ 11 3.2 印染废水的特点........................................................................................................ 12 3.3 印染废水处理工艺选择的原则................................................................................ 13 3.4 印染废水处理方法与技术........................................................................................ 14 3.5 印染废水处理工艺.................................................................................................... 19 3.6 印染废水处理工艺的比选........................................................................................ 21 3.7设计方案的确定......................................................................................................... 24
3.7.1 本工程污水处理工艺流程.............................................................................. 25 3.7.2污水处理工艺流程简介................................................................................... 26
4 污水处理厂工艺设计.......................................................................................................... 26
4.1 厂址确定.................................................................................................................... 26 4.2 构筑物设计.............................................................................................................. 27
4.2.1格栅池............................................................................................................... 27
4.2.1.1 设计参数................................................................................................ 27 4.2.1.2 设计结果................................................................................................ 27 4.2.1.3 设备选型................................................................................................ 28 4.2.2 提升泵.............................................................................................................. 28
4.2.2.1 设计参数................................................................................................ 28 4.2.2.2 设计结果................................................................................................ 28 4.2.2.3 设备选型................................................................................................ 28 4.2.3 调节池.............................................................................................................. 28
4.2.3.1 设计参数................................................................................................ 29 4.2.3.2 设计结果................................................................................................ 29
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河海大学环境工程专业毕业设计
4.2.3.3 设备选型................................................................................................ 29 4.2.4水解酸化池....................................................................................................... 29
4.2.4.1 设计参数................................................................................................ 30 4.2.4.2 设计结果................................................................................................ 30 4.2.4.3 设备选型................................................................................................ 30 4.2.5生物接触氧化池............................................................................................... 30
4.2.5.1 设计参数................................................................................................ 30 4.2.5.2 设计结果................................................................................................ 31 4.2.4.3 设备选型................................................................................................ 31 4.2.6 竖流式沉淀池.................................................................................................. 31
4.2.6.1 设计参数................................................................................................ 32 4.2.6.2 设计结果................................................................................................ 32 4.2.6.3 设备选型................................................................................................ 32 4.2.7混凝反应池....................................................................................................... 32
4.2.7.1 设计参数................................................................................................ 32 4.2.7.2 设计结果................................................................................................ 33 4.2.7.3 设备选型................................................................................................ 33 4.2.8 混凝沉淀池...................................................................................................... 33
4.2.8.1 设计参数................................................................................................ 33 4.2.8.2 设计结果................................................................................................ 33 4.2.8.3 设备选型................................................................................................ 34 4.2.9消毒池............................................................................................................... 34
4.2.9.1 设计参数................................................................................................ 34 4.2.9.2 设计结果................................................................................................ 34 4.2.9.3 设备选型................................................................................................ 35 4.2.10鼓风机房......................................................................................................... 35 4.2.11集泥井 ............................................................................................................. 35
4.2.11.1 设计参数 .............................................................................................. 35 4.2.11.2 设计结果 .............................................................................................. 35 4.2.11.3 设备选型 .............................................................................................. 35 4.2.12 污泥浓缩池.................................................................................................... 35
4.2.12.1 设计参数.............................................................................................. 36 4.2.12.2 设计结果.............................................................................................. 36 4.2.12.3 设备选型.............................................................................................. 36 4.2.13 污泥脱水系统................................................................................................ 36
4.2.13.1 设计参数.............................................................................................. 36 4.2.13.2 设计结果.............................................................................................. 37 4.2.13.3 设备选型.............................................................................................. 37 4.2.14 各种建筑物的设计........................................................................................ 37
4.2.14.1 综合办公楼的尺寸............................................................................ 37 4.2.14.2 机修车间.............................................................................................. 37 4.2.14.3 污泥脱水间的设计.............................................................................. 37 4.2.14.4 污水提升泵房的设计.......................................................................... 37 4.2.14.5 鼓风机房的设计.................................................................................. 37
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