CN212924700U - 一种处理含氮磷废水的回用工艺系统 - Google Patents
一种处理含氮磷废水的回用工艺系统 Download PDFInfo
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- CN212924700U CN212924700U CN202020748898.1U CN202020748898U CN212924700U CN 212924700 U CN212924700 U CN 212924700U CN 202020748898 U CN202020748898 U CN 202020748898U CN 212924700 U CN212924700 U CN 212924700U
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- 239000002351 wastewater Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000004064 recycling Methods 0.000 title claims abstract description 13
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- 229910052757 nitrogen Inorganic materials 0.000 title claims description 10
- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound 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- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound 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Abstract
本实用新型公开了一种处理含氮磷废水的回用工艺系统,采用的工艺为预处理、超滤膜过滤系统、抗污染反渗透浓缩、蒸发器系统,包括调节池、反应池、竖流式沉淀池、集水池、过滤器、超滤单元、反渗透系统、蒸发系统、污泥浓缩池、高压板框压滤机、化学清洗装置,所述氮磷废水通过管道和水泵依次与超滤单元、反渗透系统、蒸发系统连接,各部分有序紧密的运行,构成了氮磷废水的回用工艺系统,其中废水经反渗透处理的出水可以作为一般清洗废水回用到生产线供水系统,节约了大量水资源,实现废水资源化回收利用。本系统简单实用,高效运行,具有良好的环境效益。
Description
技术领域
本实用新型属于工业再生水回用处理领域,尤其涉及一种处理含氮磷废水的回用工艺系统。
背景技术
全球城市化导致工业废水量大幅迅速增长。其中许多污染物通过常规的二级处理已不能去除或去除很少,这些污染物包括氮、磷的化合物、难生物降解的有机物与重金属离子等。随着趋势升级,人们已经深刻地认识到这些污染物对生态环境的严重危害性。
目前部分工业领域或地区针对含有上述污染物的废水制定了比较严格的排放标准。生产企业对氮磷废水的工艺治理技术做到了回用水标准,此类回用水达到了生产工艺用水的要求,保护环境不受到污染。
实用新型内容
本实用新型的目的就是为了克服上述现有技术存在的缺陷而提供一种处理含氮磷废水的回用工艺系统。
本实用新型的的目的可以通过以下技术方案来实现:
一种处理含氮磷废水的回用工艺系统,包括预处理单元、超滤膜过滤系统、反渗透浓缩系统、蒸发系统,所述预处理单元、超滤膜过滤系统、反渗透浓缩系统、蒸发系统依次连接;
所述预处理单元包括调节池1、反应池2、竖流式沉淀池3、集水池4,废水出口连接调节池1,所述调节池1、反应池2、竖流式沉淀池3、集水池4通过管道依次连接;
所述超滤膜过滤系统包括过滤器、超滤膜组7,所述过滤器包括石英砂过滤器、袋式过滤器6,所述石英砂过滤器通过提升泵401与集水池4连接,石英砂过滤器后依次连接袋式过滤器6、超滤膜组7;
所述反渗透浓缩系统包括阻垢剂加药装置、保安过滤器、高压泵、一级RO装置和二级RO装置、所述超滤膜组7通过RO进水泵804连接一级阻垢剂加药装置9,阻垢剂加药装置依次连接保安过滤器10、一级RO装置12,所述一级RO装置12的净水出口连接一级浓水箱13,所述一级浓水箱13连接二级阻垢剂加药装置14,二级阻垢剂加药装置14连接二级RO装置15,所述一级RO装置12和二级RO装置15 的废水出口连接二级浓水箱17,所述二级RO装置15的净水出口连接回收水箱16;
所述蒸发系统包括三组蒸发器、冷凝器21,所述二级浓水箱17 通过进水泵171连接三效蒸发器18、所述三效蒸发器18依次连接二效蒸发器19、一效蒸发器20、冷凝器21,
所述冷凝器21依次连接交换器22、结晶釜23、离心机24,所述离心机24分别连接结晶釜23、固化场26。
优选的,所述反应池,包括PH调节池202、凝聚池203、助凝池 204,所述PH调节池202、凝聚池203、助凝池204相通,所述PH 调节池202、凝聚池203、助凝池204分别与NaOH计量泵、PAC计量泵、PAM计量泵连接。
优选的,所述石英砂过滤器包括第一石英砂过滤器5和第二石英砂过滤器501,所述第一石英砂过滤器5通过提升泵401与集水池4 连接。
优选的,所述超滤膜过滤系统还包括反清洗单元,所述反清洗单元包括反冲水泵803、超滤水箱802、反冲加药装置801,所述超滤水箱802通过反冲水泵803连接反冲加药装置801,反冲加药装置801 连接超滤膜组7。
优选的,一级RO装置12包括一级高压泵121、一级循环泵122,二级RO装置15包括二级高压泵153和二级循环泵154。
优选的,所述调节池1内设有曝气管,所述曝气管与风机连接。
本实用新型的有益效果:
在工业废水领域中,采用预处理+超滤膜过滤系统+抗污染反渗透浓缩系统+蒸发器系统的工艺过程,不仅能够有效的去除氮磷废水的污染物质,而且能够实现废水循环再利用,不仅能够节约大量水资源,而且降低环境污染。
附图说明
图1为一种处理含氮磷废水的回用工艺系统的结构示意图。
具体实施方式
结合附图所示,本实用新型的技术方案作进一步的描述:
一种处理含氮磷废水的回用工艺系统,包括预处理单元、超滤膜过滤系统、反渗透浓缩系统、蒸发系统,所述预处理单元、超滤膜过滤系统、反渗透浓缩系统、蒸发系统依次连接;
所述预处理单元包括调节池1、反应池2、竖流式沉淀池3、集水池4,废水出口连接调节池1,所述调节池1、反应池2、竖流式沉淀池3、集水池4通过管道依次连接;
所述超滤膜过滤系统包括过滤器、超滤膜组7,所述过滤器包括石英砂过滤器、袋式过滤器6,所述石英砂过滤器通过提升泵401与集水池4连接,石英砂过滤器后依次连接袋式过滤器6、超滤膜组7;
所述反渗透浓缩系统包括阻垢剂加药装置、还原剂加药、保安过滤器、高压泵、一级RO装置和二级RO装置、反渗透清洗装置;所述超滤膜组7通过RO进水泵804连接一级阻垢剂加药装置9,阻垢剂加药装置依次连接保安过滤器10、一级RO装置12,所述一级RO装置12的净水出口连接一级浓水箱13,所述一级浓水箱13连接二级阻垢剂加药装置14,二级阻垢剂加药装置14连接二级RO装置15,所述一级RO装置12和二级RO装置15的废水出口连接二级浓水箱 17,所述二级RO装置15的净水出口连接回收水箱16;
所述蒸发系统包括三组蒸发器、冷凝器21,所述二级浓水箱17 通过进水泵171连接三效蒸发器18、所述三效蒸发器18依次连接二效蒸发器19、一效蒸发器20、冷凝器21。
所述冷凝器21依次连接交换器22、结晶釜23、离心机24,所述离心机24分别连接结晶釜23、固化场26。
本实施例中,优选的,所述反应池,包括PH调节池202、凝聚池203、助凝池204,所述PH调节池202、凝聚池203、助凝池204 相通,所述PH调节池202、凝聚池203、助凝池204分别与NaOH计量泵、PAC计量泵、PAM计量泵连接。
本实施例中,优选的,所述石英砂过滤器包括第一石英砂过滤器 5和第二石英砂过滤器501,所述第一石英砂过滤器5通过提升泵401 与集水池4连接。
本实施例中,优选的,所述超滤膜过滤系统还包括反清洗单元,所述反清洗单元包括反冲水泵803、超滤水箱802、反冲加药装置801,所述超滤水箱802通过反冲水泵803连接反冲加药装置801,反冲加药装置801连接超滤膜组7。
本实施例中,优选的,一级RO装置12包括一级高压泵121、一级循环泵122,二级RO装置15包括二级高压泵153和二级循环泵154。
本实施例中,优选的,所述调节池1内设有曝气管,所述曝气管与风机连接。
所述的预处理单元包括调节池、反应池、竖流式沉淀池、集水池;氮磷废水首先进入调节池,调节氮磷废水的水质、水量,并加入空气曝气。然后由调节池提升泵将废水提升至反应池,在反应池中,废水和NaOH、PAC、PAM充分混合反应,自流至竖流式沉淀池,利用自然沉降进行泥水分离。最终进入集水池,预处理的废水在集水池储存,并进行流量分配。
所述超滤膜过滤系统,超滤膜组,占地面积小,便于自动控制。超滤作为反渗透的预处理工艺,不仅出水水质好,而且可以大大提高系统运行的稳定性,降低反渗透化学清洗的频率。超滤膜孔径范围为0.005μm—0.1μm,几乎能截留溶液中的所有细菌、热源、病毒及胶体微粒、蛋白质、大分子有机。以膜两侧的压力差为驱动力,以超滤膜为过滤介质,在一定压力下,当废水流过膜表面时,超滤膜表面密布的许多细小的微孔只允许水及小分子物质通过而成为透过液,而废水中体积大于膜表面微孔径的物质则被截留在膜的进液侧,成为浓缩液,因而实现对废水的净化、分离和浓缩的目的。
超滤膜过滤系统超滤膜组使用一段时间后,被截留下来的悬浮物、胶体、大分子有机物等有害物质会依附在超滤膜的内表面,使超滤膜的产水量逐渐下降,引起超滤膜的堵塞,需要定期对超滤膜进行冲洗可有效恢复膜的产水量。
所述抗污染反渗透浓缩系统,采用二级反渗透装置,包括阻垢剂加药装置、保安过滤器、反渗透装置、反渗透清洗装置、控制部分等组成。是一种以压力差为推动力,通过选择性透过膜将溶液中的溶质和溶剂分离的过程。反渗透膜在饮用纯净水生产、工业废水处理及特种分离过程中发挥着重要作用。
其中,本系统的氮磷工业废水主要进水水质指标:pH为5-10, COD≤250mg/l,NH3-N≤40mg/l,SS≤100mg/l;经过预处理+超滤膜过滤系统+抗污染反渗透浓缩系统+蒸发器系统后的出水指标:PH为 6.5-8.5、电阻率≥15MΩ.cm、全硅≤10μg/l、总有机碳≤100μg/l,工艺系统回用水出水水质标准将完全达到电子级水的技术指标 (GB/5749-2013)。
所述蒸发系统,属于提取浓缩设备,由相互串联的三组蒸发器、冷凝器、盐分离器和辅助设备等组成。反渗透浓缩后的废水进入浓水集水箱储存收集,待满足一定液位后进入后级核心蒸发系统。浓缩水箱中的浓缩液根据设置的液位开关,按设定条件在进料阀和真空负压的作用下进入蒸发室内。蒸发后可获得回用水和污染物固态干化处理。
最后应说明的是:
本领域技术人员可以参考本文内容,实施该方法,实现其应用,特别需要指出的是,所有类似的替换和改动对本领域技术人员来说是显而易见的,它们都被视为包括在本实用新型内。本实用新型的方法及应用己经通过较佳的实施例进行了描述,相关人员明显能在不脱离本实用新型内容、精神和范围内对本文制各方法和应用进行改动或适当变更与组合,来实现和应用本实用新型技术。
以上实施例仅用以说明而非限制本实用新型的技术方案,尽管参照上述实施例对本实用新型进行了详细说明,本领域的普通技术人员应当理解:依然可以对本实用新型进行修改或者等同替换,而不脱离本实用新型的精神和范围,而所附权利要求意在涵盖落入本实用新型精神和范围中的这些修改或者等同替换。
Claims (5)
1.一种处理含氮磷废水的回用工艺系统,其特征在于:包括预处理单元、超滤膜过滤系统、反渗透浓缩系统、蒸发系统,所述预处理单元、超滤膜过滤系统、反渗透浓缩系统、蒸发系统依次连接;
所述预处理单元包括调节池(1)、反应池(2)、竖流式沉淀池(3)、集水池(4),废水出口连接调节池(1),所述调节池(1)、反应池(2)、竖流式沉淀池(3)、集水池(4)通过管道依次连接;
所述超滤膜过滤系统包括过滤器、超滤膜组(7),所述过滤器包括石英砂过滤器、袋式过滤器(6),所述石英砂过滤器通过提升泵(401)与集水池(4)连接,石英砂过滤器后依次连接袋式过滤器(6)、超滤膜组(7);
所述反渗透浓缩系统包括阻垢剂加药装置、保安过滤器、高压泵、一级RO装置和二级RO装置,所述超滤膜组(7)通过RO进水泵(804)连接一级阻垢剂加药装置(9),阻垢剂加药装置依次连接保安过滤器(10)、一级RO装置(12),所述一级RO装置(12)的净水出口连接一级浓水箱(13),所述一级浓水箱(13)连接二级阻垢剂加药装置(14),二级阻垢剂加药装置(14)连接二级RO装置(15),所述一级RO装置(12)和二级RO装置(15)的废水出口连接二级浓水箱(17),所述二级RO装置(15)的净水出口连接回收水箱(16);
所述蒸发系统包括三组蒸发器、冷凝器(21),所述二级浓水箱(17)通过进水泵(171)连接三效蒸发器(18),所述三效蒸发器(18)依次连接二效蒸发器(19)、一效蒸发器(20)、冷凝器(21),
所述冷凝器(21)依次连接交换器(22)、结晶釜(23)、离心机(24),所述离心机(24)分别连接结晶釜(23)、固化场(26)。
2.如权利要求1所述的回用工艺系统,其特征在于:所述反应池,包括pH调节池(202)、凝聚池(203)、助凝池(204),所述pH调节池(202)、凝聚池(203)、助凝池(204)相通,所述pH调节池(202)、凝聚池(203)、助凝池(204)分别与NaOH计量泵、PAC计量泵、PAM计量泵连接。
3.如权利要求1所述的回用工艺系统,其特征在于:所述超滤膜过滤系统还包括反清洗单元,所述反清洗单元包括反冲水泵(803)、超滤水箱(802)、反冲加药装置(801),所述超滤水箱(802)通过反冲水泵(803)连接反冲加药装置(801),反冲加药装置(801)连接超滤膜组(7)。
4.如权利要求1所述的回用工艺系统,其特征在于:一级RO装置(12)包括一级高压泵(121)、一级循环泵(122),二级RO装置(15)包括二级高压泵(153)和二级循环泵(154)。
5.如权利要求1所述的回用工艺系统,其特征在于:所述调节池(1)内设有曝气管,所述曝气管与风机连接。
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