论文总字数：20415字

摘 要

关键词：乳品废水、工业废水、气浮池、CASS、BAF

南京卫岗乳品厂主要产品为乳酸饮品，一般饮料。其生产主要原料和资源是鲜牛奶、白糖、花生、核桃、电、水、煤等。在乳制品生产过程中，产生刷罐水，洗瓶水等废水，与地面冲洗水、厕所冲洗水及少量的生活污水一并进入厂内排水明渠，通过共同的排放口，向车间外排放。

废水中主要含有大量的可溶性有机物如糖类、脂肪酸、蛋白质、淀粉油脂等，属中低浓度有机废水。该乳制品废水目前排放量为1500m³/d，考虑远期扩建，要求设计污水厂处理能力为2000m³/d，一次性设计、建设到位。

污水进水渠在红框内左下角。污水从原污水渠截留进入新建污水站，进行有效的污水处理，达标后排入上侧或者左侧的河流中，出水要求达到城镇污水处理厂污染物排放标准（GB18918-2002）一级标准的A标准。

主要工艺流程为：污水从污水渠由污水管引流至格栅间去除较大的悬浮物后，流入调节池。再由提升泵提升至混凝池，进行加药混凝后，流入气浮池，由于本次污水中含有较多的油脂，气浮池主要用来去除油和SS。气浮池出水进入水解酸化池，大幅度提高废水的可生化性，然后进入主体工艺CASS工艺，由于CASS出水只能达到一级B标准，故CASS池之后设BAF进行深度处理，使出水达到一级A标准，消毒排放至河流。

Abstract

Keywords：Dairy wastewater,Industrial waste water,Air flotation pool,CASS,BAF

Nanjing WeiGang dairy lactic acid drinks, main products are generally drink.The production of the main raw material and resources is fresh milk, sugar, peanut, walnut, electricity, water, coal, etc.In the process of dairy production,Brush pot of water,Washing bottle water such as wastewater,Flush with the ground water, toilet flushing water and a small amount of sewage entering the plant along with all the drainage channel,Through the common discharge outlet, to discharge outside the shop.

Mainly contain a large amount of soluble organic matter in waste water,Such as sugars, fatty acid, protein, starch, grease, belongs to the low concentration organic wastewater.The current dairy wastewater emissions is 1500m3/d,Considering the future expansion,Requires the ability to design of sewage treatment plant for2000m3/d,The disposable design, construction in place.

Sewage into the canal in red in the lower left corner.Sewage into the newly built sewage interception from raw sewage drainage station,For effective sewage treatment,To mark the back into the upper or on the left side of the river,The water requirements for urban sewage treatment plant pollutant discharge standard (GB18918-2002) A standard level standards.

The main technological process is:Wastewater from sewage drainage from the sewer drainage to grille to remove large suspended solids, flows into adjusting pool.Again by the lift pump up to the pool of coagulation, after dosing coagulation, into the air floatation pool,Due to the wastewater containing more fat, gas pool is mainly used to remove oil and SS.Air flotation pool water into the hydrolysis acidification pool, greatly improve the wastewater can be biochemical,And then into the main process CASS process,Due to the CASS water can only reach the standard level 1 B,So the CASS pool after BAF for deep processing,Make the water reach the standard level A, disinfection discharge into rivers.

目录

第一章 概述

1.1基本资料…………………………………………………………………………………………7

1.2设计取值…………………………………………………………………………………………7

1.3布置原则…………………………………………………………………………………………7

1.4高程布置…………………………………………………………………………………………8

第二章 工艺路线的确定及选择依据

2.1污水处理方案的确定…………………………………………………………………………10

2.2处理工艺路线的确定…………………………………………………………………………10

2.3污泥处理工艺流程……………………………………………………………………………11

第三章 废水处理构筑物设计与计算

3.1格栅……………………………………………………………………………………………12

3.1.1设计说明 ……………………………………………………………………………………12

3.1.2设计参数 ……………………………………………………………………………………12

3.1.3设计计算 ……………………………………………………………………………………12

3.1.4格栅尺寸计算………………………………………………………………………………13

3.1.5格栅选型 ……………………………………………………………………………………13

3.2调节池 ………………………………………………………………………………………13

3.2.1设计说明 ……………………………………………………………………………………13

3.2.2设计参数 ……………………………………………………………………………………14

3.2.3设计计算 ……………………………………………………………………………………14

3.3提升泵房…… ………………………………………………………………………………14

3.3.1 设计说明……………………………………………………………………………………14

3.3.2 设计参数……………………………………………………………………………………15

3.3.3 设计计算……………………………………………………………………………………15

3.3.3.1扬程估算…………………………………………………………………………………15

3.3.3.2选泵……… ………………………………………………………………………………15

3.3.4泵房设计计算………………………………………………………………………………15

3.4混凝池 ………………………………………………………………………………………15

3.4.1 设计说明……………………………………………………………………………………15

3.4.2 设计参数……………………………………………………………………………………16

3.4.3 设计计算……………………………………………………………………………………16

3.5气浮池 ………………………………………………………………………………………16

3.5.1 设计说明……………………………………………………………………………………16

3.5.2 设计参数……………………………………………………………………………………16

3.5.3 设计计算……………………………………………………………………………………17

3.5.3.1设备选型…………………………………………………………………………………17

3.5.3.2气浮接触室 ……………………………………………………………………………17

3.5.3.3气浮分离室 ……………………………………………………………………………17

3.5.3.4气浮池深度 ……………………………………………………………………………18

3.5.3.5气浮池容积 ……………………………………………………………………………18

3.5.3.6气浮池总停留时间 ……………………………………………………………………18

3.5.3.7气浮池气、水接触时间 ………………………………………………………………19

3.5.3.8释放器 ……………………………………………………………………………………19

3.5.3.9出水管 ……………………………………………………………………………………19

3.6水解酸化池…………………………………………………………………………………20

3.6.1 设计说明……………………………………………………………………………………20

3.6.2 设计参数……………………………………………………………………………………21

3.6.3 设计计算……………………………………………………………………………………21

3.6.3.1水解池容积V ……………………………………………………………………………21

3.6.3.2水解池长、宽……………………………………………………………………………21

3.6.3.3配水方式 ………………………………………………………………………………21

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