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Wastewater is removed larger floats by the thick grid,then the water was raised by pump to regulating pools which is used to regulate water quality and supply stable water for subsequent biological treatment.then the water flows into coagulation and sedimentation process,it’s supposed to clear large particles.Improving biodegradability by hydrolytic acidification is necessary for next treatment.The next phase is bio-contact oxidation process ,it is designed for remove organic matters.
The design strictly follow countries related regulations,specification and standard which ensure that the processing water quality index reached the appropriate countries emissions
standard,refered related design manual and other literature information;the layout of waterwater treatment device is compact and smooth ,meanwhile,it is supposed to reduce occupied area as far as possible,adhere to the total chief principles by combination of practical and beautiful phase,select simple process;Adopting mature and practical process ;Reducing engineering investment and the running cost and adapting by optimization design.
Key words: design；papermaking wastewater；biocontact oxidation；biochemical process.
目录
1引言 1
1.1造纸废水排放现状 1
1.2造纸废水的来源和特点 1
1.3造纸废水处理传统工艺 2
1.4国内外造纸废水处理研究动态 3
1.4.2 电凝聚技术 4
1.4.3 HCR工艺 4
1.4.4 真菌技术 4
2设计说明 5
2.1设计背景 5
2.1.1 课题内容 5
2.1.2 课题意义 5
2.1.3 设计原则 5
2.2污水处理方案的比较与选择 5
2.2.1预处理工艺的比较和选择 5
2.2.2 生化工艺的比较和选择 8
2.2.3最终方案的确定 10
2.2.4 工艺流程的确定 11
2.3主要构筑物的设计 11
2.3.1格栅 11
2.3.2提升泵房 12
2.3.3机械搅拌澄清池 12
2.3.4接触氧化池 13
2.4污水厂平面和高程布置 13
2.4.1 平面布置 13
2.4.2 高程布置 14
2.5 效益分析 15
2.5.1 环境效益 15
2.5.2社会效益 15
2.5.3经济效益 15
2.6 污水厂运行管理 16
2.6.1 污水厂运行管理 16
2.6.2污水处理厂运行中的注意事项 16
2.6.3 劳动定员 16
3 设计计算书 17
3.1格栅井 17
3.1.1设计说明 17
3.1.2设计参数 17
3.1.3设计计算 18
3.1.5格栅选型 20
3.2调节池 20
3.2.1 设计说明 20
3.2.2 设计参数 20
3.2.3 设计计算 21
3.3澄清池 21
3.3.1设计说明 21
3.3.2设计计算 22
3.3.3计算示意图 28
3.4水解酸化池 29
3.4.1池体容积计算 29
3.4.2配水方式 30
3.4.3出水设计 30
3.4.4设备选型 31
3.5接触氧化池 31
3.5.1设计说明 31
3.5.2设计计算 32
3.6二沉池 36
3.6.1辐流式沉淀池设计说明 36