CN110891906A - 生物反应器 - Google Patents
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Abstract
本发明涉及一种生物反应器:具有罐(1),该罐具有至少一个包含载体介质的生物反应器腔室(1a‑1c),在该载体介质表面上可生长生物膜;供应构件,用于将待净化的水从所述腔室的第一纵向端供应到所述生物反应器腔室(1a‑1c)中;在所述腔室(1a‑1c)的第二相对纵向端处的排放构件,用于从所述腔室排放处理过的水;用于将纯化过程所需的反应气体供应到所述生物反应器腔室中的构件(7);以及用于在所述腔室内部搅拌所述载体介质和所述待净化的水为旋转运动的构件(7)。在生物反应器腔室(1a‑1c)中,沿其纵向延伸,布置穿孔管(4),所述穿孔管与所述生物反应器腔室的内壁(8,9)保持一定距离,并且在所述管(4)的入口端区域是引导构件(2a‑2c,13a‑13c),用于将待净化的水引导到所述管(4)外部的生物反应器空间,从该空间净化后的水进入穿孔管(4)内,并通过所述生物反应器腔室(1a‑1c)的出口端处的出口从管中排出。
Description
本发明涉及一种生物反应器:具有罐,该罐具有至少一个包含载体介质的生物反应器腔室,在该载体介质表面上可生长生物膜;供应构件,用于将待净化的水从所述腔室的第一纵向端供应到所述生物反应器腔室中;在所述腔室的第二相对纵向端处的排放构件,用于从所述腔室排放处理过的水;用于将纯化过程所需的反应气体供应到所述生物反应器腔室中的构件;以及用于在所述腔室内部搅拌待净化的水为旋转运动的构件。
在诸如废水之类的水的生物净化中,使水通过反应器,其中利用微生物将水中的杂质转化为无害的最终产物,例如二氧化碳、矿物质和水。作为用于微生物的基质,例如使用载体介质的片,在其表面上微生物可以作为生物膜生长。在生物水净化中,微生物本身(即生物质)也可以吸收生物质中不可生物降解的产品,例如重金属。净化可以是需氧的或需氧的。
本发明的目的是提供一种生物反应器,其特别适用于通过硝化和反硝化处理来自养鱼场的循环水。目的是通过合适的细菌从水中生物去除铵和氮化合物,以使水成为鱼类的良好生活环境。净化水的细菌在载体介质元件的表面形成菌落。根据本发明的解决方案还适用于其他水净化工艺,例如废水净化。
为了实现本发明的目的,根据本发明的生物反应器的特征在于,在所述生物反应器腔室中,沿其纵向延伸,布置穿孔管,所述穿孔管与所述生物反应器腔室的内壁保持一定距离,并且在入口端区域是引导构件,用于将待净化的水引导到所述管外部的生物反应器空间,从该空间净化后的水进入穿孔管内,并通过生物反应器腔室的出口端处的出口从管中排出。
在从属权利要求中描述了本发明的优选实施例。
根据本发明的生物反应器包括罐内的盆部、和包括由在盆部内的载体介质的片的载体材料、以及不同部分,通过其控制水的通过,并将载体介质的片保留在盆部中,使得它们不随流动而排出。该操作还包括通气,通过该通气使载体介质的片运动并为硝化的目的将氧气供应至该过程。
在下文中,参考附图更详细地描述本发明,其中:
图1示出从端部看的根据本发明的生物反应器的原理示意图;
图2示出作为两腔室的实施方式的根据本发明的生物反应器的实施例的原理俯视图;
图3示出作为三腔室的实施方式的根据本发明的生物反应器的实施例的原理俯视图;
图4示出根据本发明的生物反应器的示例的原理示意图,其中提供一个腔室用于反硝化过程;和
图5示出根据图4的腔室的剖视图。
附图中所示的实施例包括罐1,罐1的横截面为矩形,并具有底部8、侧壁9和端壁,端壁在它们之间限定盆部。盆部优选地被盖部分10覆盖。在盆部中形成至少一个生物反应器腔室,该生物反应器腔室包含可在其上生长生物膜的载体介质的片(未示出)。在生物反应器腔室的上部区域中布置有沿罐的纵向(垂直于纸的平面)延伸的导向板5,导向板从侧壁9向内倾斜并朝盖部分10向上延伸。这些导向板5有利于将腔室内的水带入旋转运动,同时例如来自空气管7的气流充当旋转运动的驱动力。在罐的上部是空气空间6,水中的气体可以上升到该空间中,并且例如可以通过设置在盖部分10中的排出开口(未示出)从中排出气体。
通过盆部安装管4,使得其前端和后端在盆部壁或盆部外部敞开。管4部分或全部穿孔。在前端,待净化的水从管中排出,穿孔至少覆盖管的圆周面积的50%。穿孔的尺寸使得载体介质的片不能在管内转移。在这一点上,允许阻塞以使水流在盆部中更均匀地分布。管的直径根据不同的目的选择。在管4内部可以是具有完整表面(未示出)的另一根管,用于引导流动。在管4的内部布置有封闭盘13a-13c,在该点处,在其前面,水期望沿流动方向从管的内部通过穿孔流到管的外部。目的是使待处理的水尽可能均匀地流过整个载体介质,从而可以最佳地利用生物活性的能力。在管4外部的封闭盘13a-13c处是分隔壁类型的导向板2a-2c,如从反应器的横截面中所见,这迫使水流过保留在导向板2a-2c的最外边缘与罐的侧面8,9之间的流动开口14,促进所有载体介质的利用。
图2和图3示出两腔室和相应的三腔室生物反应器,其中盆部被分隔壁3a,3b分隔,通过其管4延伸进入部分,使得相同的反应器腔室按照需要并按所需数量连续。穿孔管4优选地在位于罐1的端壁11和12之间的罐的整个长度上延伸。在管4内的封闭盘13a和第一分隔壁3a之间,水通过管中的穿孔流回到管4内,并继续流向壁3a的另一侧,其中重复相同的流动方式,即导向板2b引导水围绕管4流动。在图3所示的实施例中的下一个壁3b之后重复相同的步骤,其中存在三个生物反应器腔室。封闭盘13a-13c也可以具有开口或者可以被旋转,使得一部分或全部流将通过反应器腔室。
目的是在盆部中尽可能多地填充载体介质的片,以增加基部区域的输出。载体介质的片形成床,该床通过通气而旋转,以使床在穿孔管4周围循环,否则水将被充分混合。通气管7定位在距水表面1.5米的最大深度处,并且吹入空气,使得实现载体介质床的期望的移动。吹得太深可能会导致有害的氮气过饱和。例如,可以通过以45度角放置并沿流动方向定位的导向板5来促进旋转,使得想象中的旋转圆在床的上部通过,或以其他方式改善了操作。空气管7位于盆部的侧面上,靠近外壁9,使得如果目的是旋转载体介质床,则从其中流出的空气会将载介体床在床的一侧向上提起。当在循环养鱼场中使用硝化(或反硝化)工艺时,会对水充气,以便能够将二氧化碳从水中吹走。从这个意义上讲,使用空气不会增加必要的成本。通过使大部分气流通过任何一个腔室,并间歇地或连续地将其用作反硝化作用,然后以这种方式处理的水可以再次通过下一个腔室进行硝化,从而避免了由可逆反应器引起的任何突然的不利情况。
各种操作员都使用开放盆部生物反应器,而常规生物反应器(例如移动床反应器)通常仅在约80厘米厚的载体介质床上。因此,本方法的解决方案使这些生物反应器的容量大大增加。
本方法可以容易地应用于长期使用的较浅罐的盆部,例如在丹麦和中欧,从而立即增加了其容量。根据本发明的解决方案特别适合于装修场所。关于建筑成本,根据本发明的解决方案是经济的,并且例如在开放的盆部中安装是快速的。在出现故障的情况下,敞开式盆部比封闭式盆部具有优势,因为在敞开式盆部中更容易定位可能的故障。通常建议覆盖盆部,以防止由于阳光的影响而导致有害藻类和细菌的生长。
在根据本发明的溶液中使用的穿孔管优选是钢。
在反硝化阶段,待净化的水可以通过空气和可能的氮气进行混合和旋转。
图4和图5示出用于更快速地开始反硝化过程的实施方式的示例。在该示例性实施方式中,三腔室生物反应器的最中心的腔室1b被盖10封闭,在盖10中形成有用于排放从待净化的水中上升的气体的排放开口15。排放开口15连接到风扇16,风扇16通过管17和通气管7将反应气体供应到生物反应器腔室中。空气通常作为有氧过程中使用的反应气体供应到生物反应器中。在厌氧反硝化过程中,将硝酸盐形式的氮还原为氮气(NO3-、NO2-、NO、N2O、N2),空气可以通过风扇16进行封闭循环,从而空气中的氧气会从气泡中溶解到水中,从而被净化,而载体介质表面的细菌会消耗掉溶解在水中的氧气。因此,再循环空气逐渐变为无氧,主要包含氮气,在反硝化过程中会产生更多的氧气。通过这种基本上由氮气组成的再循环气体,可以使载体介质保持恒定的运动。代替再循环的反应气体,还可以使用其他无氧气的气体来使载体介质保持运动。保持载体介质床恒定运动,使要处理的水均匀地分布在载体介质上,从而提高了处理效率,并使载体介质保持清洁。生物反应器腔室的盖10配备有通气阀18,以平衡生物反应器腔室内部和外部的压力。将待净化的水以所需的流速连续或分批地引导通过用于反硝化的腔室。如有必要,可将空气间歇地吹入腔室,以防止形成硫化氢。其他腔室1a和1c可以是敞开的,也可以盖上盖。
根据本发明的溶液也可以例如与专利EP 1971555中描述的生物反应器结合使用,其中生物反应器包括具有圆形或椭圆形横截面的罐部,并且其中反应器具有用于操作反应气体轴承流体的控制构件,使得载体介质发生旋转运动,从而使水和含反应气体的流体围绕基本穿过罐的横截面中心的旋转中心线进行旋转。
附图标记列表
1 罐
2a-2c流动导向板
3a-3b分隔壁
4 穿孔管
5 导向板
6 罐的上部
7 空气管
8 罐的底部
9 罐的侧壁
10罐的盖
11罐的第一端
12罐的第二端
13a-13c封闭盘
14流动开口
15气体排放开口
16风扇
17反应气供应管
18通气阀
Claims (7)
1.一种生物反应器:具有罐,该罐具有至少一个包含载体介质的生物反应器腔室(1a-1c),在该载体介质表面上可生长生物膜;供应构件,用于将待净化的水从所述腔室的第一纵向端供应到所述生物反应器腔室(1a-1c)中;在所述腔室(1a-1c)的第二相对纵向端处的排放构件,用于从所述腔室(1a-1c)排放处理过的水;用于将纯化过程所需的反应气体供应到所述生物反应器腔室中的构件(7);以及用于在所述腔室内部搅拌所述载体介质和所述待净化的水为旋转运动的构件(7),其特征在于,在所述生物反应器腔室(1a-1c)中,沿其纵向延伸,布置穿孔管(4),所述穿孔管与所述生物反应器腔室的内壁(8,9)保持一定距离,并且在所述管(4)的入口端区域是引导构件(2a-2c,13a-13c),用于将待净化的水引导到所述管(4)外部的生物反应器空间,从该空间净化后的水被布置成通过所述穿孔管(4)中的开口进入管内,并通过所述生物反应器腔室(1a-1c)的出口端处的出口从管中排出。
2.根据权利要求1所述的生物反应器,其特征在于在所述罐(1)中布置至少两个生物反应器腔室(1a-1c),它们通过分隔壁(3a-3b)彼此分隔。
3.根据权利要求1或2所述的生物反应器,其特征在于所述罐(1)的横截面为矩形,并具有底部(8)、侧壁(9)和盖(10),在所述罐(1)的上部区域中布置有沿所述罐的纵向延伸的导向板(5),该导向板(5)有助于将所述生物反应器腔室(2a-2c)中的载体介质和水带入旋转运动。
4.根据前述权利要求中任一项的生物反应器,其特征在于所述引导构件(2a-2c,13a-13c)包括在所述管(4)内的封闭盘(13a-13c)和在管外的导向板(2a-2c),所述导向板从管(4a)的外表面延伸这样的距离,该距离从所述生物反应器腔室的内壁(8,9)形成流动开口。
5.根据权利要求4所述的生物反应器,其特征在于封闭板(13a-13c)形成为阀构件,如果需要,可以通过该阀构件将待净化的水引导到所述穿孔管(4)内,从而通过期望的生物反应器腔室。
6.根据前述权利要求中任一项的生物反应器,其特征在于所述穿孔管(4)的材料是钢。
7.根据前述权利要求中任一项的生物反应器,其特征在于至少一个腔室(1b)设置有盖(10)和用于使反应气体作为封闭循环进行循环的构件(15-17),以在所述腔室中导致反硝化过程。
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