CN211198756U - 反硝化除磷组合装置及系统 - Google Patents
反硝化除磷组合装置及系统 Download PDFInfo
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- CN211198756U CN211198756U CN201922048390.0U CN201922048390U CN211198756U CN 211198756 U CN211198756 U CN 211198756U CN 201922048390 U CN201922048390 U CN 201922048390U CN 211198756 U CN211198756 U CN 211198756U
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- phosphorus
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- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 79
- 239000011574 phosphorus Substances 0.000 title claims abstract description 79
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound 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- 238000005273 aeration Methods 0.000 claims description 20
- 238000010521 absorption reaction Methods 0.000 claims description 19
- 239000012528 membrane Substances 0.000 claims description 17
- 238000005262 decarbonization Methods 0.000 claims description 15
- 238000004140 cleaning Methods 0.000 claims description 8
- 239000012510 hollow fiber Substances 0.000 claims description 4
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims description 4
- 238000011001 backwashing Methods 0.000 claims description 3
- 239000002033 PVDF binder Substances 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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[C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 16
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Abstract
本实用新型涉及一种反硝化除磷组合装置及系统,包括ABR‑MBR一体化反应器，且所述ABR‑MBR一体化反应器包括ABR反应区以及MBR反应区，所述ABR反应区包括厌氧去碳区、厌氧释磷区以及缺氧吸磷区，所述厌氧去碳区与原水箱相连，所述原水箱内的液体依次经过所述厌氧去碳区、厌氧释磷区以及缺氧吸磷区流入所述MBR反应区，且所述缺氧吸磷区通过第一回流管道与所述厌氧释磷区相连，所述MBR反应区通过第二回流管道与所述缺氧吸磷区相连。本实用新型有利于实现高效反硝化除磷，保证出水水质。
Description
技术领域
本实用新型涉及生活污水生物处理的技术领域，尤其是指一种反硝化除磷组合装置及系统。
背景技术
日益严峻的水质排放标准对出水氮、磷等营养元素的含量提出了更加严格的要求，但在实际的工程应用中，传统生物脱氮除磷工艺缺难以使得氮、磷同时达标排放，特别是在处理低C/N(碳氮)比污水时，这一问题尤为突出。
为了克服上述问题，近年来，市场上出现了一种新型废水处理系统，利用了ABR-MBR一体化装置，其中所述ABR-MBR一体化装置包括厌氧折流板反应器(Anaerobic BaffledReactor,简称ABR)以及膜生物反应器(Membrane Bio-Reactor，简称MBR)，由于所述ABR相较与其他厌氧反应器具有较大优势，不但简单的结构，而且具有较强的生物截留能力以及抗冲击能力，使得其在实际工程中得到广泛的应用；而所述MBR具有容积负荷高、剩余污泥产量低、占地少、高效的污泥截留能力和出水水质好等优点，在城镇污水以及工业废水的处理上得到了广泛的应用。具体地，如现有中国发明专利 (CN107739097 A)公开了一种脱碳除磷的污水处理系统，所述的系统包括外壳，所述外壳内设置有ABR反应区和MBR反应区，所述的ABR反应区包括多个厌氧折流板反应室，相邻的两个厌氧折流板反应室通过一组隔板和折流板相间隔，所述的系统还包括调节池、进水管，所述的进水管的一端连通至所述的调节池，所述的进水管的另一端部分别连通至多个厌氧折流板反应室，所述的进水管上还设置有一用于将所述的调节池内的污水分别输送至所述的厌氧折流板反应室内的进水泵。上述虽然可以对污水进行处理，但是在使用时，需要外加碳源，因此不但操作繁琐，而且由于不好控制碳源加入量，导致反硝化除磷效果差。
实用新型内容
为此，本实用新型所要解决的技术问题在于克服现有技术中操作繁琐，而且反硝化除磷效果差的问题，从而提供一种操作简单，而且反硝化除磷效果好的反硝化除磷组合装置及系统。
为解决上述技术问题，本实用新型的一种反硝化除磷组合装置，包括 ABR-MBR一体化反应器，且所述ABR-MBR一体化反应器包括ABR反应区以及 MBR反应区，所述ABR反应区包括厌氧去碳区、厌氧释磷区以及缺氧吸磷区，所述厌氧去碳区与原水箱相连，所述原水箱内的液体依次经过所述厌氧去碳区、厌氧释磷区以及缺氧吸磷区流入所述MBR反应区，且所述缺氧吸磷区通过第一回流管道与所述厌氧释磷区相连，所述MBR反应区通过第二回流管道与所述缺氧吸磷区相连。
在本实用新型的一个实施例中，所述MBR反应区内设有膜组件。
在本实用新型的一个实施例中，所述膜组件采用聚偏氟乙烯中空纤维膜。
在本实用新型的一个实施例中，所述MBR反应区与曝气系统相连，所述曝气系统包括设置在所述MBR反应区内的曝气装置以及与所述曝气装置相连的风机。
在本实用新型的一个实施例中，所述曝气装置为微孔曝气管。
在本实用新型的一个实施例中，所述MBR反应区通过出水泵与清水箱相连。
在本实用新型的一个实施例中，所述清水箱通过反洗泵与所述MBR反应区相连。
在本实用新型的一个实施例中，所述ABR反应区与所述MBR反应区的停留时间比为3：2-5：2。
在本实用新型的一个实施例中，所述ABR反应区与所述MBR反应区的停留时间比为2：1。
本实用新型还提供了一种反硝化除磷组合系统，包括上述任意一项所述的反硝化除磷组合装置和控制器，所述反硝化除磷组合装置和所述控制器相连。
本实用新型的上述技术方案相比现有技术具有以下优点：
本实用新型所述的反硝化除磷组合装置及系统，原水进入由厌氧段、缺氧段和好氧段构成的ABR-MBR一体化反应器进行去碳脱氮除磷，通过硝化液回流比及污泥回流构有利于构建反硝化除磷体系，利用厌氧段提供反硝化除磷所需优质碳源进行厌氧释磷，以所述MBR反应器的硝化液提供电子受体以强化反硝化磷作用，同时基于ABR反应器微生物相分离的特性，通过调控硝化液回流比及污泥回流比，有利于实现高效反硝化除磷，由于整个过程不需要外加碳源，因此不但操作方便，而且本实用新型所述的反硝化除磷可以提高优质碳源，实现同步脱氮除磷。
附图说明
为了使本实用新型的内容更容易被清楚的理解，下面根据本实用新型的具体实施例并结合附图，对本实用新型作进一步详细的说明，其中
图1是本实用新型反硝化除磷组合装置的示意图。
说明书附图标记说明：10-原水箱，21-ABR反应区,21A-厌氧去碳区， 21B-厌氧释磷区，21C-缺氧吸磷区，22-MBR反应区，22A-膜组件，22B-爆气装置，22C-风机，30-清水箱。
具体实施方式
实施例一
如图1所示，本实施例提供一种反硝化除磷组合装置，包括ABR-MBR一体化反应器，且所述ABR-MBR一体化反应器包括ABR反应区21以及MBR反应区22，所述ABR反应区21包括厌氧去碳区21A、厌氧释磷区21B以及缺氧吸磷区21C，所述厌氧去碳区21A与原水箱10相连，所述原水箱10内的液体依次经过所述厌氧去碳区21A、厌氧释磷区21B以及缺氧吸磷区21C流入所述MBR反应区22，且所述缺氧吸磷区21C通过第一回流管道与所述厌氧释磷区21B相连，所述MBR反应区22通过第二回流管道与所述缺氧吸磷区21C相连。
本实施例所述反硝化除磷组合装置，包括ABR-MBR一体化反应器，通过所述ABR-MBR一体化反应器进行去碳脱氮除磷，且所述ABR-MBR一体化反应器包括ABR反应区21以及MBR反应区22，所述ABR反应区21有利于强化 ABR为反硝化除磷提供足够的优质碳源，所述MBR反应区22根据水力停留时间与泥龄分离的特性，有利于充分发挥其对微生物高效截留作用，保证优良出水，具体地，所述ABR反应区21包括厌氧去碳区21A、厌氧释磷区21B 以及缺氧吸磷区21C，所述厌氧去碳区21A与原水箱10相连，所述原水箱 10内的液体依次经过所述厌氧去碳区21A、厌氧释磷区21B以及缺氧吸磷区 21C流入所述MBR反应区22，所述厌氧去碳区21A、厌氧释磷区21B以及缺氧吸磷区21C构成厌氧段，有利于实现低耗且有效去碳，所述MBR反应区 22为好氧段，且所述缺氧吸磷区21C通过第一回流管道与所述厌氧释磷区21B相连，从而实现了将所述缺氧吸磷区21C内的污泥回流至所述厌氧释磷区21B内，有利于实现释磷的作用，所述MBR反应区22通过第二回流管道与所述缺氧吸磷区21C相连，从而实现了将MBR反应区22内的消化液回流至所述缺氧吸磷区21C内，有利于实现吸磷的作用，通过硝化液回流比及污泥回流，使得所述ABR反应区21中富集的反硝化除磷菌(DPB)可以进行完整的释磷-吸磷循环，从而实现对磷的去除，整个过程不但运行低耗，而且可以实现同步脱氮除磷，无需外加碳源，就可以强化从所述MBR反应区22 排出的出水水质，保证水质优良。再者，本实用新型还可以减少污泥产量，从而有利于节省后期污泥处理费用，经过实践证明，可以减少1/2的污泥产量。
所述MBR反应区22内设有膜组件22A，所述膜组件22A具有高效的截留能力，可以强化出水水质，有利于保证污泥浓度。本实施例中，所述膜组件22A采用聚偏氟乙烯(PVDF)中空纤维膜，不但成本低，而且效果好。另外，所述聚偏氟乙烯(PVDF)中空纤维膜中，优选膜孔径为0.2μm。另外，所述反硝化除磷组合装置还包括真空压力表，所述真空压力表用于监测跨膜压差 (TMP)，以此表征膜污染情况，若所述TMP超过指定量，则需要对所述膜组件22A进行清洗。具体地，若所述TMP超过30kPa，便对所述膜组件22A 进行化学清洗。
所述MBR反应区22与曝气系统相连，通过所述曝气系统可以为所述MBR 反应区22内加入氧气，有利于为所述MBR反应区22内的硝化液提供电子受体以强化反硝化磷作用。具体地，所述曝气系统包括设置在所述MBR反应区 22内的曝气装置22B以及与所述曝气装置22B相连的风机22C，通过所述风机22C可以将空气持续不断地通过所述曝气装置22B输送至所述MBR反应区 22内。本实施例中，所述曝气装置22B为微孔曝气管。
所述MBR反应区22通过出水泵与清水箱30相连，从而可以将由所述 MBR反应区22排出的水抽吸至所述清水箱30内。所述清水箱30通过反洗泵与所述MBR反应区22相连，从而可以将所述清水箱30内的水返回至所述 MBR反应区22内，有利于循环使用。
所述ABR反应区21与所述MBR反应区22的停留时间比为3：2-5：2，从而有利于通过调控硝化液回流比及污泥回流比，来实现ABR与MBR的循环联动，有利于高效反硝化除磷。所述ABR反应区21与所述MBR反应区22的停留时间比为2：1时，可以充分发挥其对微生物高效截留作用，实现高效反硝化除磷，保证优良出水。
本实施例中，为了保证成本的同时，保证由所述MBR反应区22排出的出水水质优良,所述厌氧去碳区21A为一个独立的隔室，标记为第一隔室B1；所述厌氧释磷区21B为一个独立的隔室，标记为第二隔室B2，所述缺氧吸磷区21C设置为三个独立的隔室,分别标记为第三隔室B3、第四隔室B4以及第五隔室B5。为了强化出水水质，所述第五隔室B5通过所述第一回流管道与所述第二隔室B2相连，从而可以使所述第五隔室B5中的污泥可以回流至所述第二隔室B2内，有利于实现释磷的作用，所述MBR反应区22通过第二回流管道与所述第三隔室B3相连，从而实现了将MBR反应区22内的消化液回流至所述第三隔室B3内，有利于实现吸磷的作用。
为了实现将所述原水箱10内的液体依次流入所述厌氧去碳区21A、厌氧释磷区21B以及缺氧吸磷区21C，所述第一隔室B1、第二隔室B2、第三隔室B3、第四隔室B4以及第五隔室B5的高度依次降低，当所述第一隔室 B1的液体装满后，流向所述第二隔室B2，当所述第二隔室B2的液体装满后，流向所述第三隔室B3，依次一直流入所述第五隔室B5内。
本实用新型所述反硝化除磷组合装置在实施前，反应器内部接种污泥为市政污水厂好氧段活性污泥。开始实施前，所述ABR反应区21的各个隔室的MLSS(混合液污泥浓度)约为22000mg·L-1，所述MBR反应区22内MLSS 约为4000mg·L-1。所述MBR反应区22内溶解氧(DO)控制为2-3mg·L-1，所述ABR-MBR一体化反应器内的温度控制在(30±1)℃。总水力停留时间 (HRT)为9h，控制泥龄为15d。
本实用新型所述反硝化除磷组合装置在使用时，所述液体是指原水，所述原水进入所述ABR反应区21，原水中大分子有机物经过充分水解产生大量的挥发性脂肪酸，利用所述ABR-MBR一体化反应器内部的污泥回流及MBR 硝化液回流，使得所述反应器中富集的反硝化除磷菌(DPB)可以进行完整的释磷-吸磷循环，从而实现对磷的去除。与此同时，充分利用经所述ABR 反应区21水解产生的优质碳源用于合成胞内多聚物(PHB)来实现化学需氧量(COD)的利用，PHB(碳源类贮藏物)在缺氧段作为反硝化除磷菌的电子供体，实现“一碳两用”。另外，本实用新型中，所述ABR反应区21在改善碳源质量以供厌氧段释磷所需，又能够有效降低厌氧出水COD浓度，利于后续在所述MBR反应区22内进行充分的硝化反应。
实施例二
本实施例还提供了一种反硝化除磷组合系统，包括实施一所述的反硝化除磷组合装置和控制器，所述反硝化除磷组合装置和所述控制器相连，通过所述控制器可以控制所述反硝化除磷组合装置的自动工作。
本实施例所述反硝化除磷组合系统，由于包括实施例一所述的反硝化除磷组合装置，因此实施例一所具有的优点，本实施例二也全部具有。另外，所述控制器可以控制所述反硝化除磷组合装置的自动工作，具体地，所述控制器包括继电器和液位控制仪，所述MBR反应区22由所述继电器控制周期出水，整个工艺通过所述液位控制仪可以自动控制水位恒定，以及所述出水泵和反冲洗泵的启闭。如可以设置为抽吸周期为10min，其中出水8min 和反冲洗2min，从而有利于保证优良出水。
显然，上述实施例仅仅是为清楚地说明所作的举例，并非对实施方式的限定。对于所属领域的普通技术人员来说，在上述说明的基础上还可以做出其它不同形式变化或变动。这里无需也无法对所有的实施方式予以穷举。而由此所引伸出的显而易见的变化或变动仍处于本实用新型创造的保护范围之中。
Claims (10)
1.一种反硝化除磷组合装置，包括ABR-MBR一体化反应器，且所述ABR-MBR一体化反应器包括ABR反应区以及MBR反应区，其特征在于：所述ABR反应区包括厌氧去碳区、厌氧释磷区以及缺氧吸磷区，所述厌氧去碳区与原水箱相连，所述原水箱内的液体依次经过所述厌氧去碳区、厌氧释磷区以及缺氧吸磷区流入所述MBR反应区，且所述缺氧吸磷区通过第一回流管道与所述厌氧释磷区相连，所述MBR反应区通过第二回流管道与所述缺氧吸磷区相连。
2.根据权利要求1所述的反硝化除磷组合装置，其特征在于：所述MBR反应区内设有膜组件。
3.根据权利要求2所述的反硝化除磷组合装置，其特征在于：所述膜组件采用聚偏氟乙烯中空纤维膜。
4.根据权利要求1所述的反硝化除磷组合装置，其特征在于：所述MBR反应区与曝气系统相连，所述曝气系统包括设置在所述MBR反应区内的曝气装置以及与所述曝气装置相连的风机。
5.根据权利要求4所述的反硝化除磷组合装置，其特征在于：所述曝气装置为微孔曝气管。
6.根据权利要求1所述的反硝化除磷组合装置，其特征在于：所述MBR反应区通过出水泵与清水箱相连。
7.根据权利要求6所述的反硝化除磷组合装置，其特征在于：所述清水箱通过反洗泵与所述MBR反应区相连。
8.根据权利要求1所述的反硝化除磷组合装置，其特征在于：所述ABR反应区与所述MBR反应区的停留时间比为3：2-5：2。
9.根据权利要求8所述的反硝化除磷组合装置，其特征在于：所述ABR 反应区与所述MBR反应区的停留时间比为2：1。
10.一种反硝化除磷组合系统，其特征在于：包括权利要求1-9中任意一项所述的反硝化除磷组合装置和控制器，所述反硝化除磷组合装置和所述控制器相连。
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