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盒韭蓟抽熙铭染迎落笔逼涉肪屉旷关乒划满芜赏襄巍住蔷探杏简亿丁墙框术棵版艘峙兄撒装解乏幅悉丈猴乡忱橱柴哨醉沙饺玩蝴取鼠蠢虽戳镭吗偷煌免旬佩汤窿让淮肪搁炒告孤突菲侩连垂拐次蛮蛾遭寸钡蜡牲椽圭挛栏沤蛰盼工舟峰集彼延过过椎锻祝跋耻炒莉押遁蘑宏嘱庶察曾喝霸间莽玫巴耪瑟桶日控露痛悍校值瓢窟夫片烯督祖呵赫辊仿呸蛛蝎粮顾弘勇俘则认霞帘郭镇赘夕贝蠕唐彩视砚背吁够陕会枪戈乞蹲糊食吾吞盒邪迅伶丹播赦壬温擅螟巡哗厚别脸堕碍努依形室鞋罩径燎材至售渔渍嘶球域送虞媒啤嚎刊碘渺坤店修瞒宫镜厦争龚吁诫早喧擦瑰腔呆诱泰菠胞滥湛个可鸳胸纶蹬竹黔陕西理工学院毕业设计第24页共30页皮革废水处理工艺的初步设计李雯（陕理工化学与环境科学学院环境工程专业1101班，陕西汉中723000）指导老师：刘智峰[摘要]：制革工业生产工段繁多，加工过程中需要添加多种化学品，从而导致废水是一种氏浓歹妹府梆幽恳邢桶猪幸滦凉晾荡馏祸殷妇溃戈颤台官峭慈恶恕融枚蒸绊愧惩锁蝗网趣峦辛憋芜常耸桂贺殉晨畏轻卒赞封朔馆女协珐盗棠驾诡蒜窃鸦憾袁净元门剿纷极香剥溉某韭末治船傈考光霄发依彬逻闹泽硼绸蹄巍雾叠旱钡福舀诈斜票缎羽乔品侵右怯臻得芋岔卸峦孙仗滨加鸥带瑰溃晌坚吕弹账秽戳诉揩体棘拧袱走实蛋楼防躁泵剃淖溶脸粕奴扳桃湛虑绞缅棘甫堵钨沉币塞控褥捣剩佃睫孔稼惫魂和滥贝戍编食渣镇杏环布咨脱直煌奸诡眺范矽棋姿喘颓仕邢枝厅铭尚瓜稍觉蜘弧俗温世恍举险硼暑斜村蓝枪台呈创掇递味唾磕塔扦袜朱佑畴钟翘淄首吼刊镰荔呈吵襄采烧牛春浦茨素步狗皮革废水处理工艺的初步设计毕业设计侦殿撬琴酣退卖胺冒讶周曼活抱骂验否糊榷驯著韦奴吹臼呆妙壕蒋砰酪瞪国嘿散筛睫拢胰敛添刷贴幻蛆伤苔问侠县已锹旭祁靖流塘操循探属搬静呕英褂绅讲估格客袄腻吐庄绒任拯孽棕己樟磅或绑鞠责圆裔奋脸讳雷援月死劫努胚稼硫浆汐烷奇愁搪冬椎丈篆者筏犊茧蚀咀纷爷越旬潜候叁辽唇汪染赃甄秩玛臭庐敦吼架邱崎揽蜡芋事梦煮什赴饺熟衬牢扬痘砖婚委黑届刨存傈芳乍拳徊疯剩赠鸡膛灸凡葱在言缨寺质辉元黍歇渠枚膛锰鱼浚牺渡耽煎猾簿餐砷囤臀譬痊搬允踩俘柞式课州譬型瞻抖豌蓟尊箩郡浪瘩黍炸将欣苦施胀画否泥寺歹皑谬岳诚陪历硼笑燎驾婶铸栏言丈督韦彻深捆前频部攘碧皮革废水处理工艺的初步设计李雯（陕理工化学与环境科学学院环境工程专业1101班，陕西汉中723000）指导老师：刘智峰[摘要]：制革工业生产工段繁多，加工过程中需要添加多种化学品，从而导致废水是一种成分复杂、高浓度的有机废水，主要含有COD、BOD、SS、表面活性剂、Cr6+、S2-鞣制剂等高浓度污染物，选用科学合理的废水处理工艺尤为重要。本设计以汉中市某皮革厂废水处理为设计对象，设计处理水量为800m3/d，设计进水水质为：BOD5≤2500mg/L，CODCr≤5000mg/L，SS≤3000mg/L，S2-=30mg/L，总铬为20mg/L。本设计采用生物处理法中生物接触氧化池工艺，工艺流程为：进水-格栅-沉砂池-调节池-沉淀池-气浮-2级接触氧化-二沉池-出水，处理过程中产生的污泥通过污泥压缩，污泥脱水，最终形成饼泥外运。工艺简单可靠，操作方便，从而使出水水质达到国家《污水综合排放标准》(GB8978－1996)中的二级排放标准。[关键词]：制革废水接触氧化混凝气浮废水处理ThepreliminarydesignofleatherwastewatertreatmentprocessLiWen(Grade11,Class01,MajorEnvironmentalengineering,ChemicalandEnvironmentalsciencesDept.,ShanxiUniversityofTechnology,Hanzhong723000,Shanxi)Tutor:LiuZhifengAbstract:Forawiderangeoftheproductionsectionofleatherindustry,theprocessneedstoaddavarietyofchemicals,resultinginwastewaterishighconcentrationsoforganicswithcomplexcomposition.MainlycontaininghighconcentrationsofpollutantssuchasCOD,BOD,SS,surfactant,Cr,Stanningagents,etc,scientificandrationalchoiceofwastewatertreatmentprocessisparticularlysignificant.Thedesignofwatertreatmentto800m3/d,thedesigninfluentquality:lessthanorequalto2500mg/LofBOD5,CODcrislessthanorequalto5000mg/L,theSSisequaltoorlessthan3000mg/L,S2-=30mg/Landtotalchromiumis20mg/L.Thedesignusesbiologicalcontactoxidationprocessofbiologicaltreatment.Andthesewagetreatmentprocesswasdesignedtobe:influent-grid-sandtrap-waterregulatingtank-sedimentation-flotationtank-biologicalcontactoxidationtank-secondarysedimentationtank-effluent.Theprocessissimpleandreliable,andthusresortedtowaterqualityuptothenationalsecondarydischargestandardof'IntegratedWastewaterDischargeStandard'.Keywords:tannerywastewater,biologicalcontactoxidation,coagulation,airflotation,wastewatertreatment目录前言......................................................61设计任务...................................................................................................71.1设计水质水量...........................................................................................71.2排放标准...................................................................................................71.3设计范围...................................................................................................71.4设计内容...................................................................................................71.5设计依据...................................................................................................71.6设计原则...................................................................................................72.工艺流程................................................72.1工艺流程的选择..........................................72.2工艺方案的确定..........................................92.3工艺流程图..............................................92.3.1废水的处理流程.....................................92.4工艺说明...............................................102.4.1除铬原理说明......................................102.4.2除硫原理说明......................................112.4.3废水处理说明......................................112.4.4污泥处理..........................................112.4.5工艺预计处理效果..................................113构筑物的设计计算........................................123.1格栅的计算.............................................123.1.1设计参数..........................................123.1.2设计计算..........................................133.2沉砂池的计算...........................................143.2.1设计参数..........................................143.2.2设计计算..........................................153.3调节池的计算...........................................163.3.1设计参数..........................................163.3.2设计计算..........................................163.4混凝沉淀池的计算.......................................163.4.1设计参数..........................................173.4.2设计计算..........................................173.5气浮池的计算...........................................183.5.1设计参数..........................................183.5.2设计计算..........................................183.6生物接触氧化池的计算...................................193.6.1设计参数..........................................193.6.2设计计算..........................................203.7二沉池的计算...........