CN107311308B - Process for synchronously removing and enriching phosphorus by biomembrane method - Google Patents
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- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 title claims abstract description 179
- 229910052698 phosphorus Inorganic materials 0.000 title claims abstract description 179
- 239000011574 phosphorus Substances 0.000 title claims abstract description 179
- 238000000034 method Methods 0.000 title claims abstract description 53
- 230000008569 process Effects 0.000 title claims abstract description 32
- 238000011084 recovery Methods 0.000 claims abstract description 51
- 239000002351 wastewater Substances 0.000 claims abstract description 22
- 241000894006 Bacteria Species 0.000 claims abstract description 19
- 239000010802 sludge Substances 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 230000032770 biofilm formation Effects 0.000 claims 1
- 239000000969 carrier Substances 0.000 claims 1
- 238000012258 culturing Methods 0.000 claims 1
- 238000012163 sequencing technique Methods 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 8
- 230000031018 biological processes and functions Effects 0.000 abstract description 3
- 239000010842 industrial wastewater Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 16
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- 239000008399 tap water Substances 0.000 description 3
- 235000020679 tap water Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009294 enhanced biological phosphorus removal Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 241000233866 Fungi Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- CKMXBZGNNVIXHC-UHFFFAOYSA-L ammonium magnesium phosphate hexahydrate Chemical compound [NH4+].O.O.O.O.O.O.[Mg+2].[O-]P([O-])([O-])=O CKMXBZGNNVIXHC-UHFFFAOYSA-L 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000005431 greenhouse gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229910052567 struvite Inorganic materials 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/308—Biological phosphorus removal
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
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- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
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Abstract
本发明公开了一种生物膜法同步去除与富集磷的工艺，包括生物膜反应器、磷回收装置及控制系统，该工艺的具体步骤包括：步骤1)在所述生物膜反应器中放入挂膜后的生物填料；步骤2)在好氧和厌氧的条件下交替运行生物膜反应器，在好氧条件下对含磷废水进行磷的去除，在厌氧条件下通过磷回收装置回收富磷溶液。本发明的工艺，可用于生活污水或工业废水中磷的去除，通过聚磷菌的生物作用同步实现磷溶液的富集与回收，工艺中产生非常少量的污泥，且运行过程中耗能少。
The invention discloses a process for synchronously removing and enriching phosphorus by a biofilm method, comprising a biofilm reactor, a phosphorus recovery device and a control system. The specific steps of the process include: step 1) placing a The biological filler after being put into the film; Step 2) The biofilm reactor is operated alternately under aerobic and anaerobic conditions, and phosphorus-containing wastewater is removed under aerobic conditions, and the phosphorus recovery device is passed under anaerobic conditions. Phosphorus-rich solution is recovered. The process of the invention can be used for the removal of phosphorus in domestic sewage or industrial wastewater, and the enrichment and recovery of phosphorus solution can be realized simultaneously through the biological action of phosphorus accumulating bacteria, a very small amount of sludge is generated in the process, and the energy consumption during operation is low .
Description
技术领域technical field
本发明涉及污水生物处理领域，尤其涉及一种生物膜法同步去除与富集磷的工艺。The invention relates to the field of sewage biological treatment, in particular to a process for simultaneous removal and enrichment of phosphorus by a biofilm method.
背景技术Background technique
磷作为一种重要资源同时具有稀缺性和污染性的双重特性，城市污水厂中的磷将成为未来磷资源回收的主要来源。As an important resource, phosphorus has dual characteristics of scarcity and pollution. Phosphorus in urban sewage plants will become the main source of phosphorus resource recovery in the future.
现有城市污水厂所使用的强化生物除磷工艺(EPBR)主要通过排放剩余污泥来去除污水中的磷，因此具有较高的污泥产量；在磷回收方面，例如已投入运行的强化生物除磷侧流磷回收法，对剩余污泥的厌氧上清液进行鸟粪石法磷回收，该方法以及其他的一些从污泥中回收磷的方法，都存在使磷多次在污泥的体内循环，不仅消耗多余能量并产生多余的温室气体的问题，且磷的回收与去除需要各自的流程，因而具有较高的技术和经济成本。The Enhanced Biological Phosphorus Removal (EPBR) process used in existing urban sewage plants mainly removes phosphorus from sewage by discharging excess sludge, so it has a higher sludge yield; in terms of phosphorus recovery, for example, the enhanced biological Phosphorus removal side-stream phosphorus recovery method, the struvite method phosphorus recovery is carried out on the anaerobic supernatant of excess sludge. This method and some other methods of recovering phosphorus from sludge all have the existence of making phosphorus in the sludge for many times. It not only consumes excess energy and generates excess greenhouse gases, but also requires separate processes for the recovery and removal of phosphorus, so it has high technical and economic costs.
由于生物膜上的生物具有世代时间长、生物量大的特点，生物膜法以其处理效率高和运行成本低而被广泛使用于污水中磷的去除。Because the organisms on the biofilm have the characteristics of long generation time and large biomass, the biofilm method is widely used in the removal of phosphorus from sewage due to its high treatment efficiency and low operating cost.
发明内容SUMMARY OF THE INVENTION
本发明的目的是为了解决上述问题，提供一种生物膜法同步去除与富集磷的工艺，同步实现磷的去除和磷溶液的富集与回收。The purpose of the present invention is to solve the above-mentioned problems, to provide a process for simultaneous removal and enrichment of phosphorus by a biofilm method, which simultaneously realizes the removal of phosphorus and the enrichment and recovery of phosphorus solution.
为实现上述目的，本发明提供一种生物膜法同步去除与富集磷的工艺，其中，包括生物膜反应器、磷回收装置及控制系统，该工艺的具体步骤包括：In order to achieve the above purpose, the present invention provides a process for simultaneous removal and enrichment of phosphorus by a biofilm method, which includes a biofilm reactor, a phosphorus recovery device and a control system, and the specific steps of the process include:
步骤1)在所述生物膜反应器中放入挂膜后的生物填料；Step 1) Putting the bio-filler after film hanging in the biofilm reactor;
步骤2)在好氧和厌氧的条件下交替运行生物膜反应器，在好氧条件下对含磷废水进行磷的去除，在厌氧条件下回收富磷溶液至磷回收装置。Step 2) The biofilm reactor is operated alternately under aerobic and anaerobic conditions, phosphorus-containing wastewater is removed under aerobic conditions, and the phosphorus-rich solution is recovered under anaerobic conditions to a phosphorus recovery device.
进一步的，步骤1)中，所述生物填料的挂膜是在活性污泥中进行的。Further, in step 1), the film hanging of the biological filler is carried out in activated sludge.
进一步的，步骤2)中，生物膜反应器的运行，还包括一个前期阶段，通过好氧和厌氧交替的反应条件，经过一段时间的驯化和培养，使出水中磷的浓度趋于稳定，在生物膜上富集高浓度的聚磷菌。Further, in step 2), the operation of the biofilm reactor also includes a preliminary stage, through the alternating reaction conditions of aerobic and anaerobic, after a period of domestication and cultivation, the concentration of phosphorus in the effluent tends to be stable, A high concentration of phosphorus accumulating bacteria was enriched on the biofilm.
进一步的，所述好氧条件下进水为含磷废水，厌氧条件下配为可用于反复使用的富磷基液。Further, the influent water is phosphorus-containing wastewater under aerobic conditions, and is prepared as phosphorus-rich base liquid that can be used repeatedly under anaerobic conditions.
进一步的，生物膜反应器在好氧条件下，含磷废水进入安装有曝气装置的生物膜反应器，生物膜经过一段时间的好氧吸磷，将处理后的废水直接排放。Further, under aerobic conditions in the biofilm reactor, the phosphorus-containing wastewater enters the biofilm reactor equipped with an aeration device, and the biofilm absorbs phosphorus aerobic for a period of time, and then directly discharges the treated wastewater.
进一步的，生物膜反应器在厌氧条件下，以清洁水源作为富磷基液，储存于磷回收装置中，将该富磷基液通入生物膜反应器中经过一段时间的厌氧释磷，富磷基液中的磷浓度不断上升，经过一段时间富集得到高磷浓度的富磷溶液回收至磷回收装置。Further, under anaerobic conditions, the biofilm reactor uses clean water as the phosphorus-rich base liquid, which is stored in the phosphorus recovery device, and the phosphorus-rich base liquid is passed into the biofilm reactor for anaerobic phosphorus release for a period of time. , the phosphorus concentration in the phosphorus-rich base liquid continues to rise, and after a period of enrichment, the phosphorus-rich solution with high phosphorus concentration is recovered to the phosphorus recovery device.
进一步的，将所述富磷基液通入生物膜反应器中经过一段时间的厌氧释磷的过程中，还加入一定量的可被聚磷菌利用的易降解碳源如甲醇、乙醇、乙酸或含有这些碳源的废水，使生物膜上的聚磷菌将磷释放到富磷基液中。Further, in the process of anaerobic phosphorus release for a period of time by passing the phosphorus-rich base liquid into the biofilm reactor, a certain amount of easily degradable carbon sources such as methanol, ethanol, Acetic acid or wastewater containing these carbon sources causes the phosphorus accumulating bacteria on the biofilm to release phosphorus into the phosphorus-rich base fluid.
进一步的，所述富磷溶液通过提升泵提升至磷回收装置中进行回收。Further, the phosphorus-rich solution is lifted to a phosphorus recovery device by a lift pump for recovery.
进一步的，所述磷回收装置包括磷回收池、磷回收罐、或磷回收桶。Further, the phosphorus recovery device includes a phosphorus recovery tank, a phosphorus recovery tank, or a phosphorus recovery barrel.
进一步的，包括并联的多组运行的富含有聚磷菌的序批式生物膜反应器。Further, it includes multiple groups of operating in parallel sequencer batch biofilm reactors rich in phosphorus accumulating bacteria.
与现有技术相比，本发明的优势在于：本发明的工艺，可用于生活污水或工业废水中磷的去除，通过聚磷菌的生物作用并同步实现磷溶液的富集与回收，工艺中产生非常少量的污泥，且运行过程中耗能少。Compared with the prior art, the advantages of the present invention are: the process of the present invention can be used for the removal of phosphorus in domestic sewage or industrial wastewater, and the enrichment and recovery of phosphorus solution are simultaneously realized through the biological action of phosphorus accumulating bacteria. Produces very small amounts of sludge and consumes little energy during operation.
附图说明Description of drawings
此处所说明的附图用来提供对本发明的进一步理解，构成本发明的一部分，本发明的示意性实施例及其说明用于解释本发明，并不构成对本发明的不当限定。在附图中：The accompanying drawings described herein are used to provide further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:
图1为发明实施例提供的一种生物膜法同步去除与富集磷的工艺的流程示意图。FIG. 1 is a schematic flowchart of a process for simultaneous removal and enrichment of phosphorus by a biofilm method according to an embodiment of the invention.
图2为本发明实施例提供的一种用于同步去除与富集磷的组合生物处理系统的工况一的示意图。FIG. 2 is a schematic diagram of working condition 1 of a combined biological treatment system for simultaneous removal and enrichment of phosphorus according to an embodiment of the present invention.
图3为本发明实施例提供的一种用于同步去除与富集磷的组合生物处理系统的工况二的示意图。3 is a schematic diagram of working
具体实施方式Detailed ways
为使本发明的目的、技术方案和优点更加清楚，下面将结合本发明具体实施例及相应的附图对本发明技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。In order to make the objectives, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
参见图1所示，本发明实施例的一种生物膜法同步去除与富集磷的工艺，其所涉及的设备包括：生物膜反应器1、安装在生物膜反应器1内的曝气装置4、与生物膜反应器1连通的磷回收罐2、用于提升富磷溶液的提升泵3、及用于控制进水时间、进水量、曝气时间等参数的控制系统(图中未示出)。Referring to FIG. 1 , a process for simultaneous removal and enrichment of phosphorus by a biofilm method according to an embodiment of the present invention involves equipment including: a biofilm reactor 1 and an aeration device installed in the biofilm reactor 1 4. The
具体工艺步骤如下：The specific process steps are as follows:
步骤1)在生物膜反应器1中放入挂膜后的生物填料，如弹性填料、尼龙填料、纤维填料及组合填料等。Step 1) In the biofilm reactor 1, put the biological fillers after film formation, such as elastic fillers, nylon fillers, fiber fillers and composite fillers.
选取适宜材料作为生物填料，在放入活性污泥中挂膜成功后放入生物膜反应器中。其中，挂膜即是在生物填料外层附着生长由细菌、真菌、原生动物及藻类等微生物形成的生物膜，通过厌氧和好氧的交替运行，以一定浓度的磷溶液筛选出以聚磷菌为优势菌落的聚磷生物膜。Select suitable materials as biological fillers, and put them into the biofilm reactor after the activated sludge is successfully formed. Among them, the hanging film is a biofilm formed by microorganisms such as bacteria, fungi, protozoa and algae attached to the outer layer of the biological filler. Through the alternating operation of anaerobic and aerobic, a certain concentration of phosphorus solution is screened out to accumulate phosphorus. The bacteria are the phosphorus-accumulating biofilms of the dominant colonies.
步骤2)在好氧和厌氧的条件下交替运行生物膜反应器，在好氧条件下对含磷废水进行磷的去除，在厌氧条件下回收富磷液至磷回收罐2。Step 2) The biofilm reactor is operated alternately under aerobic and anaerobic conditions, phosphorus-containing wastewater is removed under aerobic conditions, and phosphorus-rich liquid is recovered to
本实施例中，采用磷回收罐作为磷回收装置，在其它实施方式中还可以采用磷回收池或者磷回收桶。In this embodiment, a phosphorus recovery tank is used as the phosphorus recovery device. In other embodiments, a phosphorus recovery pool or a phosphorus recovery barrel may also be used.
在生物膜反应器1中，好氧环境由曝气装置4提供。生物膜反应器1的运行，分为两个阶段，包括前期阶段、富集与回收阶段，每个阶段均会在好氧和厌氧交替的条件下运行。In the biofilm reactor 1, the aerobic environment is provided by the aeration device 4. The operation of the biofilm reactor 1 is divided into two stages, including a preliminary stage, an enrichment and recovery stage, and each stage will operate under alternate conditions of aerobic and anaerobic conditions.
生物膜反应器1在运行的前期阶段，先通过好氧和厌氧交替的反应条件，经过一段时间的驯化和培养，在生物膜上富集高浓度的聚磷菌，监测出水中磷的浓度趋于稳定后，则开始进入富集与回收阶段。In the early stage of the operation of the biofilm reactor 1, through the alternating reaction conditions of aerobic and anaerobic, after a period of acclimation and cultivation, the biofilm is enriched with high concentration of phosphorus accumulating bacteria, and the concentration of phosphorus in the effluent is monitored. After becoming stable, it begins to enter the enrichment and recovery stage.
生物膜反应器1在富集与回收阶段，好氧条件下进行磷的去除，厌氧条件下进行富磷溶液的回收。好氧阶段，含磷废水进入生物膜反应器1中(即图1中的进水)，使用曝气装置4提供适量空气使生物膜反应器1处在好氧阶段，生物膜经过一段时间的好氧吸磷，使得溶液中的磷浓度下降到可排放的标准，随后将该处理后的废水直接排放(即图1中的排水)；厌氧阶段，以自来水或其它清洁水源作为富磷基液，储存于回收罐2中，将该富磷基液通入生物膜反应器1中，并加入一定量的可被聚磷菌利用的易降解碳源如甲醇、乙醇、乙酸或含有这些碳源的废水使生物膜上的聚磷菌将磷释放到富磷基液中，经过一段时间的厌氧释磷，富磷基液中的磷浓度不断上升，厌氧阶段重复使用该富磷溶液，经过一段时间富集得高磷浓度的富磷溶液，该富磷溶液磷酸盐浓度可达50-125mg/l，根据浓度要求可控制回收总时长来实现不同浓度富磷溶液的回收，通过提升泵3提升至磷回收罐2中进行回收。In the enrichment and recovery stage of the biofilm reactor 1, phosphorus removal is performed under aerobic conditions, and phosphorus-rich solution is recovered under anaerobic conditions. In the aerobic stage, the phosphorus-containing wastewater enters the biofilm reactor 1 (that is, the inlet water in Figure 1), and the aeration device 4 is used to provide an appropriate amount of air to make the biofilm reactor 1 in the aerobic stage. Aerobic absorption of phosphorus, so that the phosphorus concentration in the solution drops to a dischargeable standard, and then the treated wastewater is directly discharged (ie, the drainage in Figure 1); in the anaerobic stage, tap water or other clean water sources are used as phosphorus-rich bases liquid, stored in the
本发明实施例的一种生物膜法同步去除与富集磷的工艺，可用于生活污水或工业废水中磷的去除，通过聚磷菌的生物作用同步实现磷的去除和富磷溶液的浓缩，效率高且符合未来回收污水中资源的要求。本工艺相较于悬浮生长的活性污泥系统相比，产生非常少量的污泥，更符合可持续发展的废水处理技术的要求。并且，本工艺运行过程中耗能少，节约能源，符合市场对新工艺的经济要求。A process for simultaneous removal and enrichment of phosphorus by a biofilm method according to an embodiment of the present invention can be used for the removal of phosphorus in domestic sewage or industrial wastewater, and the removal of phosphorus and the concentration of phosphorus-rich solution are simultaneously realized through the biological action of phosphorus accumulating bacteria, Efficient and compliant with future requirements for recycling resources from wastewater. Compared with the activated sludge system of suspended growth, this process produces a very small amount of sludge, which is more in line with the requirements of sustainable wastewater treatment technology. In addition, the process consumes less energy during operation, saves energy, and meets the economic requirements of the market for new processes.
参见图2和图3所示，本发明实施例还提供了一种用于同步去除与富集磷的组合生物处理系统，以两组相同的生物膜反应器并列形成，具有如下两种工作状况。Referring to FIG. 2 and FIG. 3 , an embodiment of the present invention also provides a combined biological treatment system for simultaneous removal and enrichment of phosphorus, which is formed by two sets of identical biofilm reactors in parallel, and has the following two working conditions .
图2显示了工况一的运行状态，生物膜反应器A1处于好氧阶段，含磷废水进入安装有曝气装置的空气生物膜反应器A1中，生物膜经过一段时间的好氧吸磷，使得溶液中的磷浓度下降到可排放的标准，随后将该处理后的废水直接排放；与此同时，生物膜反应器A2处于厌氧回收阶段，以自来水或其它清洁水源作为富磷基液，储存于富磷溶液回收罐B中，将该富磷基液通入生物膜反应器A2中，并加入可被聚磷菌利用的易降解碳源如甲醇、乙醇、乙酸或含有这些碳源的废水使生物膜上的聚磷菌将磷释放到富磷基液中，经过一段时间的厌氧释磷，富磷基液中的磷浓度不断上升，厌氧阶段重复使用该富磷溶液，经过一段时间富集得高磷浓度的富磷溶液。Figure 2 shows the operating state of working condition 1. The biofilm reactor A1 is in the aerobic stage, the phosphorus-containing wastewater enters the air biofilm reactor A1 equipped with an aeration device, and the biofilm absorbs phosphorus after a period of aerobic absorption. The phosphorus concentration in the solution is reduced to a dischargeable standard, and then the treated wastewater is directly discharged; at the same time, the biofilm reactor A2 is in the anaerobic recovery stage, using tap water or other clean water sources as the phosphorus-rich base liquid, Store in the phosphorus-rich solution recovery tank B, pass the phosphorus-rich base liquid into the biofilm reactor A2, and add easily degradable carbon sources such as methanol, ethanol, acetic acid or a carbon source containing these carbon sources that can be utilized by phosphorus accumulating bacteria. The wastewater causes the phosphorus-accumulating bacteria on the biofilm to release phosphorus into the phosphorus-rich base liquid. After a period of anaerobic phosphorus release, the phosphorus concentration in the phosphorus-rich base liquid continues to rise. The phosphorus-rich solution is reused in the anaerobic stage. A phosphorus-rich solution with a high phosphorus concentration is enriched for a period of time.
图3显示了工况二的运行状态，生物膜反应器A1处于厌氧回收阶段，而生物膜反应器A2处于好氧阶段。含磷废水进入安装有曝气装置的空气生物膜反应器A2中，生物膜经过一段时间的好氧吸磷，使得溶液中的磷浓度下降到可排放的标准，随后将该处理后的废水直接排放；与此同时，生物膜反应器A1处于厌氧回收阶段，以自来水或其它清洁水源作为富磷基液，储存于富磷溶液回收罐B中，将该富磷基液通入生物膜反应器A1中，并加入一定量的可被聚磷菌利用的易降解碳源如甲醇、乙醇、乙酸或含有这些碳源的废水使生物膜上的聚磷菌将磷释放到富磷基液中，经过一段时间的厌氧释磷，富磷基液中的磷浓度不断上升，厌氧阶段重复使用该富磷溶液，经过一段时间富集得高磷浓度的富磷溶液。Figure 3 shows the operating state of working
工况一和工况二的来回切换即可完成连续流进水并同步回收厌氧富磷溶液。The back-and-forth switching between working condition 1 and working
利用本发明实施例的用于同步去除与富集磷的组合生物处理系统，可以实现对磷的同步去除与回收。还可以根据反应周期的时间选择不同数量的生物膜反应器组合，使得整个系统变成连续流。Using the combined biological treatment system for simultaneous removal and enrichment of phosphorus according to the embodiment of the present invention, the simultaneous removal and recovery of phosphorus can be realized. It is also possible to choose a combination of different numbers of biofilm reactors according to the time of the reaction cycle, so that the entire system becomes a continuous flow.
以上所述的具体实例，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。The specific examples described above further describe the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention, and are not intended to limit the present invention. Within the spirit and principle of the present invention, any modifications, equivalent replacements, improvements, etc. made should be included within the protection scope of the present invention.
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