CN104529090A - 一种造纸废水深度处理系统 - Google Patents
一种造纸废水深度处理系统 Download PDFInfo
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- CN104529090A CN104529090A CN201510005561.5A CN201510005561A CN104529090A CN 104529090 A CN104529090 A CN 104529090A CN 201510005561 A CN201510005561 A CN 201510005561A CN 104529090 A CN104529090 A CN 104529090A
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- waste water
- contact oxidation
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- 239000002351 wastewater Substances 0.000 title claims abstract description 96
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- BAUYGSIQEAFULO-UHFFFAOYSA-L Iron(II) sulfate Chemical compound 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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
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- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C—CHEMISTRY; METALLURGY
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- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
本发明涉及一种造纸废水深度处理系统，包括废水调节池、氧化反应沉淀池、折流式缺氧厌氧反应池、好氧接触氧化池、二沉池和砂滤池；氧化反应沉淀池包括混合搅拌区和沉淀区，折流式缺氧厌氧反应池包括通过折流板分隔成的兼氧段、缺氧段和厌氧段；好氧接触氧化池设置有进水管、布水三角锥、填料和曝气调控系统；废水经调节池调节水量和水质，然后进入氧化反应沉淀池，污染物被氧化分解，再进入折流式缺氧厌氧反应池、好氧接触氧化池进行缺氧、厌氧和好氧反应，经沉淀和过滤后达标排放。
Description
技术领域
[0001] 本发明涉及废水处理技术领域，具体涉及一种造纸废水深度处理系统。
背景技术
[0002] 近年来随着经济的高速发展，造纸工业也迅速发展起来，由于造纸过程中污水排放量大，产生的污染物多，对环境的污染问题日益突出，对造纸废水的处理成为关注的重点。
[0003] 造纸废水处理的方法有:物理法、化学法、物化法、生化法等。物理法主要有沉淀法、过滤法、气浮法等，主要处理对象为水中的固形物。化学法主要有臭氧氧化法、光催化氧化法、超声空气法、超临界水氧化法和化学还原法等，主要是利用适当的化学药剂或在特殊的条件下分解废水中的污染物及有害物质。物理化学法主要有中和法、吸附法、萃取法、混凝沉淀法、离子交换法、膜分离法等，主要作用是降低废水的COD、BOD、SS及脱色等。生物化学法主要有好氧法、厌氧法、生物酶法等，主要作用是利用微生物氧化分解、吸附水中的有机物，以实现水中有机污染物的去除。
[0004]目前，造纸废水的主体处理工艺是采用以活性污泥或生物膜法为代表的好氧生物处理和厌氧生物处理技术，并采用物理或物化法进行辅助处理。但采用生化处理技术处理造纸废水有其自身的缺陷，废水中大部分发色的木素碎片及其衍生物很难被普通活性污泥中的微生物降解；对有机氯化物降解效果差；COD去除率不理想；对废水色度去除效果差，处理后的出水依然呈很深的颜色，严重影响了接纳水体的太阳光的透射，妨碍水生生物的生长繁殖；需要后续物理或物化处理措施，增加基建及运行费用；处理效果受天气温度地域的影响比较大；工艺操作控制复杂，有些生化工艺调试时间长，出水水质不太稳定等。
发明内容
[0005] 本发明要解决的技术问题是:为了解决上述造纸废水处理中的难题，本发明提供一种造纸废水深度处理系统。
[0006] 本发明解决其技术问题所采用的技术方案是:一种造纸废水深度处理系统，包括废水调节池、氧化反应沉淀池、折流式缺氧厌氧反应池、好氧接触氧化池、二沉池和砂滤池；所述废水调节池、氧化反应沉淀池、折流式缺氧厌氧反应池、好氧接触氧化池、二沉池和砂滤池依次连通。
[0007] 所述的废水调节池包括进水管和出水管，用于调节造纸废水的水质和水量。
[0008] 所述的氧化反应沉淀池包括混合搅拌区和沉淀区，混合搅拌区底部设有废水进水管，中上部设有用于添加过氧化氢、亚铁盐的药液添加系统，在混合搅拌区中部设置有搅拌装置；所述沉淀区内设有挡板，该挡板与沉淀池的内壁形成作为废水进入沉淀区的废水流道，沉淀区的出口处设有三相分离器，沉淀区的出口上部设有溢水堰，沉淀区底部设计成锥形结构，在沉淀区底部设置有沉淀物排放阀。
[0009] 所述折流式缺氧厌氧反应池包括通过折流板分隔成的兼氧段、缺氧段和厌氧段，所述兼氧段首端设有用于供入废水的进水管，兼氧段末端与缺氧段首端连通，缺氧段末端与厌氧段首端连通，所述缺氧段和厌氧段进水一侧折流板的下部设置有45度的转角，以避免水流进入时产生的冲击作用，从而起到缓冲水流和均匀布水的作用；厌氧段末端设有三相分离器和溢水堰，溢水堰连接出水管；所述兼氧段、缺氧段和厌氧段底部设计成锥形结构，锥形结构连接污泥排放阀；所述折流式缺氧厌氧反应池的兼氧段、缺氧段和厌氧段上盖设计成圆锥形结构，圆锥形结构顶端都设有独立的甲烷废气集气管。
[0010] 所述好氧接触氧化池内中下部设置有进水管，所述进水管下部设有布水三角锥；所述布水三角锥下部设有曝气调控系统，所述曝气调控系统包括曝气盘、鼓风机和溶解氧测量调控装置；进一步，所述的曝气盘是均匀设置有微孔的微孔式曝气盘。所述曝气盘通过曝气管连接鼓风机，鼓风机设置在好氧接触氧化池外，好氧接触氧化池的上部、废水水面下设置溶解氧测量调控装置，所述溶解氧测量调控装置根据氧容量调控鼓风机工作；所述进水管上部内置有填料；所述好氧接触氧化池的出口处布设有溢流堰。
[0011] 所述好氧接触氧化池的出水管连接二沉池，二沉池底部设有污泥回流系统，一部分污泥回流到好氧接触氧化池。
[0012] 二沉池沉淀处理后的水经溢流堰进入砂滤池，过滤后达标排放。
[0013] 一种采用上述造纸废水深度处理系统进行废水处理的方法，具有如下步骤:
[0014] ①造纸废水通过进水管进入废水调节池调节水质和水量。
[0015] ②调节后的水通过氧化反应沉淀池混合搅拌区底部的进水管进入氧化反应沉淀池，与来自药液添加系统的过氧化氢、亚铁盐的药液混合，利用设置在混合搅拌区中部的搅拌装置进行搅拌；过氧化氢、亚铁盐反应产生大量活泼的羟基自由基，破坏废水中污染物的结构，废水中的污染物被氧化分解，氧化分解后的废水进入沉淀区的废水流道，沉淀区的三相分离器实现泥水分离。
[0016] ③污泥在重力的作用下下沉到氧化反应沉淀池沉淀区的下部，通过底部的沉淀物排放阀排出。废水通过溢水堰、出水管和连接管连通折流式缺氧厌氧反应池的进水管。
[0017] ④废水通过折流式缺氧厌氧反应池兼氧段的进水管进入折流式缺氧厌氧反应池的下部；废水进入折流式缺氧厌氧反应池后沿折流板上下前进，依次通过兼氧段、缺氧段和厌氧段的每个反应室的污泥床，反应池中的污泥随着废水的上下流动和沼气上升的作用而运动，折流板的阻挡作用和污泥自身的沉降作用又使污泥的流速降低，因此大量的污泥都被截留在反应池中，反应池中的微生物与废水中的有机物充分接触。兼氧段的兼性菌、缺氧段和厌氧段的异养菌将废水中的淀粉、纤维、碳水化合物等悬浮污染物和可溶性有机物水解为有机酸，使大分子有机物分解为小分子有机物，不溶性的有机物转化成可溶性有机物。
[0018] ⑤厌氧反应后的废水在厌氧段末端设有的三相分离器实现泥、水、甲烷气的分离，污泥在重力的作用下下沉到折流式缺氧厌氧反应池的下部，多余的污泥通过底部的污泥排放阀排出。折流式缺氧厌氧反应池产生的甲烷废气通过反应池顶部集气管收集排放。废水通过溢水堰、出水管和连接管连通好氧接触氧化池的进水管。
[0019] ⑥废水通过进水管进入好氧接触氧化池的中下部，在布水三角锥的作用下均匀布水，所述的曝气盘是均匀设置有微孔的微孔式曝气盘，产生大量的微气泡，所述溶解氧测量调控装置根据氧容量调控鼓风机工作，确保好氧接触氧化池水中的溶解氧大于2mg/L，处理后的废水通过溢流堰和出水管流出。
[0020] ⑦好氧接触氧化池的出水管连接二沉池的布水管，二沉池的沉淀污泥一部分回流到好氧接触氧化池，一部分作为剩余污泥。
[0021] ⑧二沉池沉淀处理后的水经溢流堰进入砂滤池，过滤后达标排放。
[0022] ⑨氧化反应沉淀池、折流式缺氧厌氧反应池、好氧接触氧化池和二沉池产生的剩余污泥脱水后外运。
[0023] 本发明的有益效果是:本发明结构简单，制造成本较低，对造纸废水处理具有比较好的深度效果，管理方便。
附图说明
[0024] 下面结合附图和实施例对本发明进一步说明。
[0025] 图1是本发明实施例氧化反应沉淀池的结构示意图。
[0026] 图1中:1.氧化反应沉淀池，1-1.混合搅拌区，1-2.沉淀区，1-3.废水进水管，
1-4.药液添加系统，1-5.搅拌装置，1-6.挡板，1-7.三相分离器，1-8.溢水堰，1-9.沉淀物排放阀。
[0027] 图2是本发明实施例折流式缺氧厌氧反应池的结构示意图。
[0028] 图2中:2.折流式缺氧厌氧反应池，2-1.折流板，2-2.兼氧段，2-3.缺氧段，2-4.厌氧段，2-5.进水管，2-6.折流式缺氧厌氧反应池三相分离器，2-7.折流式缺氧厌氧反应池溢水堰，2-8.污泥排放阀，2-9.上盖，2-10.集气管。
[0029]图3是本发明实施例好氧接触氧化池的结构示意图。
[0030] 图3中:3.好氧接触氧化池，3-1.好氧接触氧化池进水管，3-2.布水三角锥，3-3.曝气调控系统，3-4.填料，3-5.溢流堰。
[0031] 图4是本发明实施例的工艺流程图。
具体实施方式
[0032] 现在结合附图对本发明作进一步详细的说明。这些附图均为简化的示意图，仅以示意方式说明本发明的基本结构，因此其仅显示与本发明有关的构成。
[0033] 如图1〜图4所示，本发明一种造纸废水深度处理系统，包括废水调节池、氧化反应沉淀池1、折流式缺氧厌氧反应池2、好氧接触氧化池3、二沉池和砂滤池；所述废水调节池、氧化反应沉淀池1、折流式缺氧厌氧反应池2、好氧接触氧化池3、二沉池和砂滤池依次连通。
[0034] 所述的废水调节池包括进水管和出水管，用于调节造纸废水的水质和水量。
[0035] 所述的氧化反应沉淀池I包括混合搅拌区1-1和沉淀区1-2，混合搅拌区底部设有废水进水管1-3，中上部设有用于添加过氧化氢、亚铁盐的药液添加系统1-4，在搅拌区中部设置有搅拌装置1-5 ;所述沉淀区内设有挡板1-6，该挡板与氧化反应沉淀池I的内壁形成作为废水进入沉淀区的废水流道，沉淀区的出口处设有三相分离器1-7，沉淀区的出口上部设有溢水堰1-8，沉淀区底部设计成锥形结构，在沉淀区底部设置有沉淀物排放阀1-9。
[0036] 所述折流式缺氧厌氧反应池2包括通过折流板2-1分隔成的兼氧段2-2、缺氧段
2-3和厌氧段2-4，所述兼氧段2-2首端设有用于供入废水的进水管2-5，兼氧段2_2末端与缺氧段2-3首端连通，缺氧段2-3末端与厌氧段2-4首端连通，所述缺氧段2-3和厌氧段2-4进水一侧折流板的下部设置有45度的转角，以避免水流进入时产生的冲击作用，从而起到缓冲水流和均匀布水的作用；厌氧段2-4末端设有三相分离器2-6和溢水堰2-7，溢水堰2-7连接出水管；所述兼氧段2-2、缺氧段2-3和厌氧段2-4底部设计成锥形结构，锥形结构连接污泥排放阀2-8 ;所述折流式缺氧厌氧反应池的兼氧段、缺氧段和厌氧段的上盖2-9设计成圆锥形结构，圆锥形结构顶端都设有独立的甲烷废气集气管2-10。
[0037] 所述好氧接触氧化池3内中下部设置有进水管3-1，所述进水管3-1下部设有布水三角锥3-2 ;所述布水三角锥3-2下部设有曝气调控系统3-3，所述曝气调控系统3-3包括曝气盘、鼓风机和溶解氧测量调控装置；进一步，所述的曝气盘是均匀设置有微孔的微孔式曝气盘。所述曝气盘通过曝气管连接鼓风机，鼓风机设置在好氧接触氧化池外，好氧接触氧化池的上部、废水水面下设置溶解氧测量调控装置，所述溶解氧测量调控装置根据氧容量调控鼓风机工作；所述进水管上部内置有填料3-4 ;所述好氧接触氧化池的出口处布设有溢流堰3-5。
[0038] 所述好氧接触氧化池的出水管连接二沉池，二沉池底部设有污泥回流系统，一部分污泥回流到好氧接触氧化池。
[0039] 二沉池沉淀处理后的水经溢流堰进入砂滤池，过滤后达标排放。
[0040] 一种采用上述造纸废水深度处理系统进行废水处理的方法，具有如下步骤:
[0041] ①造纸废水通过进水管进入废水调节池调节水质和水量。
[0042] ②调节后的水通过氧化反应沉淀池混合搅拌区1-1底部的废水进水管1-3进入氧化反应沉淀池1，与来自药液添加系统1-4的过氧化氢、亚铁盐的药液混合，利用设置在搅拌区中部的搅拌装置1-5进行搅拌；过氧化氢、亚铁盐反应产生大量活泼的羟基自由基，破坏废水中污染物的结构，废水中的污染物被氧化分解，氧化分解后的废水进入沉淀区1-2的废水流道，沉淀区的三相分离器1-7实现泥水分离。
[0043] ③污泥在重力的作用下下沉到氧化反应沉淀池沉淀区1-2的下部，通过底部的沉淀物排放阀1-9排出。废水通过溢水堰1-8、出水管和连接管连通折流式缺氧厌氧反应池2的进水管2-5。
[0044] ④废水通过折流式缺氧厌氧反应池兼氧段2-2的进水管2-5进入折流式缺氧厌氧反应池2的下部；废水进入折流式缺氧厌氧反应池后沿折流板2-1上下前进，依次通过兼氧段2-2、缺氧段2-3和厌氧段2-4的每个反应室的污泥床，反应池中的污泥随着废水的上下流动和沼气上升的作用而运动，折流板2-1的阻挡作用和污泥自身的沉降作用又使污泥的流速降低，因此大量的污泥都被截留在反应池中，反应池中的微生物与废水中的有机物充分接触。兼氧段2-2的兼性菌、缺氧段2-3和厌氧段2-4的异养菌将废水中的淀粉、纤维、碳水化合物等悬浮污染物和可溶性有机物水解为有机酸，使大分子有机物分解为小分子有机物，不溶性的有机物转化成可溶性有机物。
[0045] ⑤厌氧反应后的废水在厌氧段2-4末端设有的三相分离器2-6实现泥、水、甲烷气的分离，污泥在重力的作用下下沉到折流式缺氧厌氧反应池的下部，多余的污泥通过底部的污泥排放阀2-8排出。折流式缺氧厌氧反应池产生的甲烷废气通过反应池顶部的集气管
2-10收集排放。废水通过溢水堰、出水管和连接管连通好氧接触氧化池3的进水管。
[0046] ⑥废水通过进水管3-1进入好氧接触氧化池3的中下部，在布水三角锥3-2的作用下均匀布水，所述的曝气盘是均匀设置有微孔的微孔式曝气盘，产生大量的微气泡，所述溶解氧测量调控装置根据氧容量调控鼓风机工作，确保好氧接触氧化池水中的溶解氧大于2mg/L，处理后的废水通过溢流堰3-5和出水管流出。
[0047] ⑦好氧接触氧化池3的出水管连接二沉池的布水管，二沉池的沉淀污泥一部分回流到好氧接触氧化池，一部分作为剩余污泥。
[0048] ⑧二沉池沉淀处理后的水经二沉池溢流堰进入砂滤池，过滤后达标排放。
[0049] ⑨氧化反应沉淀池1、折流式缺氧厌氧反应池2、好氧接触氧化池3和二沉池产生的剩余污泥脱水后外运。
[0050] 以上述依据本发明的理想实施例为启示，通过上述的说明内容，相关工作人员完全可以在不偏离本项发明技术思想的范围内进行多样的变更以及修改。本项发明的技术性范围并不局限于说明书上的内容，必须要根据权利要求范围来确定其技术性范围。
Claims (2)
1.一种造纸废水深度处理系统，其特征在于:包括废水调节池、氧化反应沉淀池(I)、折流式缺氧厌氧反应池(2)、好氧接触氧化池(3)、二沉池和砂滤池； 所述的废水调节池包括进水管和出水管，用于调节造纸废水的水质和水量； 所述的氧化反应沉淀池(I)包括混合搅拌区(1-1)和沉淀区(1-2)，混合搅拌区底部设有废水进水管(1-3)，中上部设有用于添加过氧化氢、亚铁盐的药液添加系统(1-4)，在搅拌区中部设置有搅拌装置(1-5);所述沉淀区内设有挡板(1-6)，该挡板与氧化反应沉淀池的内壁形成作为废水进入沉淀区的废水流道，沉淀区的出口处设有三相分离器(1-7)，沉淀区的出口上部设有溢水堰(1-8)，沉淀区底部设计成锥形结构，在沉淀区底部设置有沉淀物排放阀(1-9)； 所述折流式缺氧厌氧反应池(2)包括通过折流板(2-1)分隔成的兼氧段(2-2)、缺氧段(2-3)和厌氧段(2-4)，所述兼氧段(2-2)首端设有用于供入废水的进水管(2-5)，兼氧段(2-2)末端与缺氧段(2-3)首端连通，缺氧段(2-3)末端与厌氧段(2-4)首端连通；所述缺氧段(2-3)和厌氧段(2-4)的进水一侧折流板的下部设置有45度的转角，以避免水流进入时产生的冲击作用，从而起到缓冲水流和均匀布水的作用；厌氧段(2-4)末端设有三相分离器(2-6)和溢水堰(2-7)，溢水堰(2-7)连接出水管，厌氧段(2-4)底部设计成锥形结构，锥形结构连接污泥排放阀(2-8);所述兼氧段(2-2)、缺氧段(2-3)和厌氧段(2-4)底部设计成锥形结构，锥形结构连接污泥排放阀(2-8);所述折流式缺氧厌氧反应池的兼氧段、缺氧段和厌氧段上盖(2-9)设计成圆锥形结构，圆锥形结构顶端都设有甲烷废气集气管(2-10)； 所述好氧接触氧化池(3)内中下部设置进水管(3-1)，所述进水管(3-1)下部设有布水三角锥(3-2);所述布水三角锥(3-2)下部设有曝气调控系统(3-3)，所述曝气调控系统(3-3)包括曝气盘、鼓风机和溶解氧测量调控装置，进一步的，所述的曝气盘是均匀设置有微孔的微孔式曝气盘；所述曝气盘通过曝气管连接鼓风机，鼓风机设置在好氧接触氧化池夕卜，好氧接触氧化池的上部、废水水面下设置溶解氧测量调控装置，所述溶解氧测量调控装置根据氧容量调控鼓风机工作；所述进水管上部内置有填料(3-4);所述好氧接触氧化池的出口处布设有溢流堰(3-5)； 所述好氧接触氧化池(3)的出水管连接二沉池，二沉池底部设有污泥回流系统，一部分污泥回流到好氧接触氧化池； 二沉池沉淀处理后的水经溢流堰进入砂滤池。
2.一种采用如权利要求1所述的造纸废水深度处理系统进行废水处理的方法，具有如下步骤: ①造纸废水通过进水管进入废水调节池调节水质和水量； ②调节后的水通过氧化反应沉淀池混合搅拌区(1-1)底部的废水进水管(1-3)进入氧化反应沉淀池(I)，与来自药液添加系统(1-4)的过氧化氢、亚铁盐的药液混合，利用设置在搅拌区中部的搅拌装置(1-5)进行搅拌；过氧化氢、亚铁盐反应产生大量活泼的羟基自由基，破坏废水中污染物的结构，废水中的污染物被氧化分解，氧化分解后的废水进入沉淀区(1-2)的废水流道，沉淀区的三相分离器(1-7)实现泥水分离； ③污泥在重力的作用下下沉到氧化反应沉淀池沉淀区(1-2)的下部，通过底部的沉淀物排放阀(1-9)排出；废水通过溢水堰(1-8)、出水管和连接管连通折流式缺氧厌氧反应池(2)的进水管(2-5)； ④废水通过折流式缺氧厌氧反应池兼氧段的进水管(2-5)进入折流式缺氧厌氧反应池(2)的下部；废水进入折流式缺氧厌氧反应池后沿折流板(2-1)上下前进，依次通过兼氧段(2-2)、缺氧段(2-3)和厌氧段(2-4)的每个反应室的污泥床，反应池中的污泥随着废水的上下流动和沼气上升的作用而运动，折流板(2-1)的阻挡作用和污泥自身的沉降作用又使污泥的流速降低，因此大量的污泥都被截留在反应池中，反应池中的微生物与废水中的有机物充分接触；兼氧段(2-2)的兼性菌、缺氧段(2-3)和厌氧段(2-4)的异养菌将废水中的淀粉、纤维、碳水化合物等悬浮污染物和可溶性有机物水解为有机酸，使大分子有机物分解为小分子有机物，不溶性的有机物转化成可溶性有机物； ⑤厌氧反应后的废水在厌氧段(2-4)末端设有的三相分离器(2-6)实现泥、水、甲烷气的分离，污泥在重力的作用下下沉到折流式缺氧厌氧反应池的下部，多余的污泥通过底部的污泥排放阀(2-8)排出；折流式缺氧厌氧反应池产生的甲烷废气通过反应池顶部集气管(2-10)收集排放；废水通过溢水堰、出水管和连接管连通好氧接触氧化池(3)的进水管； ⑥废水通过进水管(3-1)进入好氧接触氧化池(3)的中下部，在布水三角锥(3-2)的作用下均匀布水，所述的曝气盘是均匀设置有微孔的微孔式曝气盘，产生大量的微气泡，所述溶解氧测量调控装置根据氧容量调控鼓风机工作，确保好氧接触氧化池水中的溶解氧大于2mg/L，处理后的废水通过溢流堰(3-5)和出水管流出； ⑦好氧接触氧化池(3)的出水管连接二沉池的布水管，二沉池的沉淀污泥一部分回流到好氧接触氧化池，一部分作为剩余污泥； ⑧二沉池沉淀处理后的水经二沉池溢流堰进入砂滤池，过滤后达标排放； ⑨氧化反应沉淀池(I)、折流式缺氧厌氧反应池(2)、好氧接触氧化池(3)和二沉池产生的剩余污泥脱水后外运。
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