CN115231704A - Modular multistage biochemical-filtering sewage treatment system - Google Patents

Modular multistage biochemical-filtering sewage treatment system Download PDF

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CN115231704A
CN115231704A CN202210845739.7A CN202210845739A CN115231704A CN 115231704 A CN115231704 A CN 115231704A CN 202210845739 A CN202210845739 A CN 202210845739A CN 115231704 A CN115231704 A CN 115231704A
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biochemical
zone
filtration
treatment system
sewage treatment
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汤丁丁
程飞跃
周艳
赵皇
秦雄
郑碧娟
王媛
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China Construction Third Bureau Green Industry Investment Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • C02F3/303Nitrification and denitrification treatment characterised by the nitrification
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00Biological treatment of water, waste water, or sewage
    • C02F3/30Aerobic and anaerobic processes
    • C02F3/302Nitrification and denitrification treatment
    • C02F3/305Nitrification and denitrification treatment characterised by the denitrification
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/08Multistage treatments, e.g. repetition of the same process step under different conditions
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/14Maintenance of water treatment installations
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage

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Abstract

本发明提供了一种模块化多级生化‑过滤污水处理系统,污水处理系统至少包括一个污水处理区,每个污水处理区包括依次连通的第一生化区、第一过滤区、第二生化区及第二过滤区;第一生化区的一侧与进水口连接,第二过滤区的末端与清水区相连,清水区的末端设有出水口,第一生化区和第二生化区的底部设置曝气装置,污水处理系统能够实现污水生化处理和泥水分离一体化;通过使第一生化区为缺氧区,第二生化区为好氧区,可实现多级生化‑过滤处理;实际应用中时,可根据待处理区域污水的特点,对污水处理区的个数进行调整,提升了处理系统的实用性。通过上述方式,可不设置沉淀池就实现污水生化处理与泥水分离一体化,有效减少了污水处理过程的成本。

Figure 202210845739

The invention provides a modularized multi-stage biochemical-filtration sewage treatment system. The sewage treatment system includes at least one sewage treatment area, and each sewage treatment area includes a first biochemical area, a first filtering area, and a second biochemical area that are connected in sequence. and the second filter zone; one side of the first biochemical zone is connected to the water inlet, the end of the second filter zone is connected to the clear water zone, the end of the clear water zone is provided with a water outlet, and the bottoms of the first biochemical zone and the second biochemical zone are provided The aeration device and sewage treatment system can realize the integration of sewage biochemical treatment and mud-water separation; by making the first biochemical zone an anoxic zone and the second biochemical zone an aerobic zone, multi-stage biochemical-filtration treatment can be realized; in practical applications At the same time, the number of sewage treatment areas can be adjusted according to the characteristics of the sewage in the area to be treated, which improves the practicability of the treatment system. Through the above method, the integration of sewage biochemical treatment and mud-water separation can be realized without setting up a sedimentation tank, which effectively reduces the cost of the sewage treatment process.

Figure 202210845739

Description

模块化多级生化-过滤污水处理系统Modular multi-stage biochemical-filtration sewage treatment system

技术领域technical field

本发明涉及污水处理技术领域,尤其涉及一种模块化多级生化-过滤污水处理系统。The invention relates to the technical field of sewage treatment, in particular to a modularized multi-stage biochemical-filtration sewage treatment system.

背景技术Background technique

目前,我国农村污水生物处理在实际运行过程中或存在成本高、运行维护工作量大以及运行不稳定等问题。通常使用最多的AAO、AO系列工艺,往往需要较高的污泥回流比与消化液回流比,以保证系统具有足够的污泥浓度和TN去除效果,现有的回流方式主要是水泵回流和气提回流,而水泵回流对于农村污水处理规模偏小的情况,存在设备选取困难,而且会导致运营管理难度大、设备运行能耗高的问题;而采用气提回流的方式,虽可以实现一台风机满足曝气和回流的需求,但是回流过程往往难以控制回流比,且回流介质需要大量空气作为动力,对回流液的溶解氧影响较大,难以保证生物脱氮除磷对溶解氧的需求。At present, in the actual operation process of my country's rural sewage biological treatment, there may be problems such as high cost, heavy operation and maintenance workload, and unstable operation. AAO and AO series processes are usually used the most, which often require higher sludge return ratio and digestive liquor return ratio to ensure that the system has sufficient sludge concentration and TN removal effect. The existing return methods are mainly pump return and air lift. Backflow, and pump backflow is difficult to select equipment for the small scale of rural sewage treatment, and it will lead to the problems of difficult operation and management, and high energy consumption of equipment operation; while using the method of air lift backflow, although one fan can be realized It can meet the needs of aeration and reflux, but it is often difficult to control the reflux ratio in the reflux process, and the reflux medium requires a lot of air as power, which has a great impact on the dissolved oxygen in the reflux liquid, and it is difficult to ensure the demand for dissolved oxygen in biological denitrification and phosphorus removal.

生物法污水处理工艺过程中,由于未使用化学产品,而是利用生物制剂中的天然微生物将污水中的污染物进行去除,该过程具有处理效率高、出水质量好、不会对环境造成二次污染等优势。其中,生物法处理工艺中应用得最多的是膜生物反应器和生态处理措施,膜生物反应器能够避免污泥回流,延长污泥泥龄,提高污泥浓度,且处理效果较好,但是该工艺的投资和运行成本生态处理措施高,且需要相关专业人员进行管理,因此不适用于农村地区;生态处理措施的能耗低且运行管理简单,但是由于生态处理工艺的处理负荷普遍较低,导致设备占地面积大,且填料堵塞问题难以解决,造成人工湿地难以长期稳定运行;在低温区域,人工湿地处理效果大打折扣。In the process of biological sewage treatment, since no chemical products are used, natural microorganisms in biological preparations are used to remove pollutants in sewage. This process has high treatment efficiency, good effluent quality, and will not cause secondary pollution to the environment. pollution and other advantages. Among them, membrane bioreactors and ecological treatment measures are the most widely used in biological treatment processes. Membrane bioreactors can avoid sludge backflow, prolong sludge age, and increase sludge concentration, and the treatment effect is better. The investment and operating costs of the process are high, and the ecological treatment measures are not suitable for rural areas because they require relevant professionals to manage them. As a result, the equipment covers a large area, and the problem of packing blockage is difficult to solve, making it difficult for the constructed wetland to operate stably for a long time; in the low temperature area, the treatment effect of the constructed wetland is greatly reduced.

现有技术中,申请号为201510902437.9,公开日为2018年8月28日,名称为“一种一体化污水处理装置”的发明专利中通过在箱体的长度方向依次依次设置泥水混合区-一级生化区-二级生化区,并利用回流机构将部分污泥和二级生化区中部分混合液重新回流到泥水混合区进而返回一级生化区形成循环,二级生化区中回流的硝化液在缺氧的一级生化区中发生反硝化反应,去除总氮,提高污水处理能力;另外,泥水混合区使回流的污泥、进水和二级生化区回流的混合液混合后从泥水混合区的隔板溢出进入一级生化区,一方面起到了缓冲水流的作用并使液体的混合更为充分。上述技术方案中,通过使硝化液回流促进一级生化区的反硝化反应,以此提高污水处理能力。上述过程虽然可以提升污水处理能力,但是生化区之间的循环过程并不能有效将污水中的污泥除去,而利用硝化液回流促进反硝化反应的过程的脱氮效果并不高。In the prior art, the application number is 201510902437.9, the publication date is August 28, 2018, and in the invention patent titled "An Integrated Sewage Treatment Device", the mud-water mixing zones are sequentially arranged in the length direction of the box body - a Primary biochemical zone - secondary biochemical zone, and use the reflux mechanism to recirculate part of the sludge and part of the mixed liquid in the secondary biochemical zone to the mud-water mixing zone and then back to the primary biochemical zone to form a cycle, and the nitrification solution in the secondary biochemical zone returns The denitrification reaction takes place in the anoxic primary biochemical zone to remove total nitrogen and improve the sewage treatment capacity; in addition, the mud-water mixing zone mixes the returning sludge, the influent and the mixed liquid returning from the secondary biochemical zone, and then mixes the mud and water. The partition of the zone overflows into the first-level biochemical zone, on the one hand, it plays the role of buffering the water flow and makes the mixing of the liquid more sufficient. In the above technical scheme, the denitrification reaction of the primary biochemical zone is promoted by refluxing the nitrifying liquid, thereby improving the sewage treatment capacity. Although the above process can improve the sewage treatment capacity, the circulation process between the biochemical zones cannot effectively remove the sludge in the sewage, and the denitrification effect of the process of promoting the denitrification reaction by using the nitrification liquid backflow is not high.

现有技术中,公开号为CN213739096U的实用新型中设置了一种一体式高效污水处理设备,上述设备包括设备外墙,设备外墙的内部被板体分隔成若干个隔间,包括依次连接的厌氧区、第一缺氧区、第一好氧区、第二缺氧区、第二好氧区、沉淀澄清区和高效纤维过滤器;污水一部分进入厌氧区中酸化处理,出水进入第一缺氧区中处理,出水进入第一好氧区中处理;污水另一部分和第一好氧区的出水一同进入第二缺氧区中处理,出水进入第二好氧区中处理,出水进入沉淀澄清区,向沉淀澄清区加入除磷剂除磷,在沉淀澄清区中泥水分离,出水进入高效纤维过滤器中过滤,出水进行消毒。上述技术方案虽然可以对污水高效处理,但是沉淀区以及过滤器增大了设备的占地面积,同时,在设备的末端设置过滤器的方式,需要使污泥回流来实现泥水分离,如此一来,降低了污水处理的效率,增大了污水处理系统的运行能耗和运营维护管理难度。In the prior art, a utility model with a publication number of CN213739096U is provided with an integrated high-efficiency sewage treatment equipment. The above-mentioned equipment includes an outer wall of the equipment, and the interior of the outer wall of the equipment is divided into several compartments by a plate body, including Anaerobic zone, first anoxic zone, first aerobic zone, second anoxic zone, second aerobic zone, sedimentation and clarification zone and high-efficiency fiber filter; part of the sewage enters the anaerobic zone for acidification treatment, and the effluent enters the first For treatment in an anoxic zone, the effluent enters the first aerobic zone for treatment; the other part of the sewage and the effluent from the first aerobic zone enter the second anoxic zone for treatment, and the effluent enters the second aerobic zone for treatment, and the effluent enters In the sedimentation and clarification zone, phosphorus removal agent is added to the sedimentation and clarification zone to remove phosphorus. In the sedimentation and clarification zone, the mud and water are separated, and the effluent enters the high-efficiency fiber filter for filtration, and the effluent is disinfected. Although the above technical solution can efficiently treat sewage, the sedimentation area and the filter increase the floor area of the equipment. At the same time, the method of setting the filter at the end of the equipment needs to make the sludge return to realize the separation of the sludge and water. , reducing the efficiency of sewage treatment, increasing the operating energy consumption and difficulty of operation and maintenance management of the sewage treatment system.

有鉴于此,有必要设计一种改进的模块化多级生化-过滤污水处理系统,以解决上述问题。In view of this, it is necessary to design an improved modular multi-stage biochemical-filtration sewage treatment system to solve the above problems.

发明内容SUMMARY OF THE INVENTION

本发明的目的在于提供一种模块化多级生化-过滤污水处理系统。The purpose of the present invention is to provide a modularized multi-stage biochemical-filtration sewage treatment system.

为实现上述发明目的,本发明提供了一种模块化多级生化-过滤污水处理系统,所述污水处理系统至少包括一个污水处理区,所述污水处理区包括依次连通的第一生化区、第一过滤区、第二生化区及第二过滤区;In order to achieve the above purpose of the invention, the present invention provides a modularized multi-stage biochemical-filtration sewage treatment system, the sewage treatment system includes at least one sewage treatment area, and the sewage treatment area includes a first biochemical area, a second sewage treatment area that are connected in sequence. a filter zone, a second biochemical zone and a second filter zone;

所述第一生化区的一侧与进水口连接,所述第二过滤区的末端与清水区相连,所述清水区的末端设有出水口,所述第一生化区和所述第二生化区的底部设置曝气装置,所述污水处理系统能够实现污水生化处理和泥水分离一体化。One side of the first biochemical zone is connected to the water inlet, the end of the second filter zone is connected to the clean water zone, the end of the clean water zone is provided with a water outlet, the first biochemical zone and the second biochemical zone are An aeration device is arranged at the bottom of the zone, and the sewage treatment system can realize the integration of sewage biochemical treatment and mud-water separation.

优选的,所述第一生化区为缺氧区,所述第二生化区为好氧区。Preferably, the first biochemical zone is an anoxic zone, and the second biochemical zone is an aerobic zone.

优选的,所述污水在所述第一生化区和所述第二生化区的停留时间均为2~6h。Preferably, the residence time of the sewage in the first biochemical zone and the second biochemical zone is both 2-6 hours.

优选的,所述第一过滤区内并排设置若干可拆卸的过滤组件,所述过滤组件包括固定骨架和分别设置于所述固定骨架两侧的柔性填料。Preferably, several detachable filter assemblies are arranged side by side in the first filter area, and the filter assemblies include a fixed frame and flexible fillers respectively disposed on both sides of the fixed frame.

优选的,所述柔性填料的厚度为2~5cm。Preferably, the thickness of the flexible filler is 2-5 cm.

优选的,所述过滤组件的个数为1~20。Preferably, the number of the filter components is 1-20.

优选的,所述第一过滤区内设有若干安装卡槽,所述固定骨架上的相应位置设有能够卡设于所述安装卡槽内的安装块。Preferably, the first filter area is provided with a plurality of installation slots, and corresponding positions on the fixing frame are provided with installation blocks that can be clamped in the installation slots.

优选的,所述安装卡槽的个数不小于所述安装块的个数。Preferably, the number of the installation slots is not less than the number of the installation blocks.

优选的,所述固定骨架为四边形,所述固定骨架内设有用于固定所述柔性填料的固定件。Preferably, the fixing frame is quadrilateral, and a fixing member for fixing the flexible filler is arranged in the fixing frame.

优选的,所述第一过滤区和所述第二过滤区为缺氧区。Preferably, the first filtering zone and the second filtering zone are anoxic zones.

本发明的有益效果是:The beneficial effects of the present invention are:

1、本发明提出的模块化多级生化-过滤污水处理系统,至少包括一个污水处理区,通过将污水处理区设置成依次连通的第一生化区、第一过滤区、第二生化区及第二过滤区,并使第一生化区为缺氧区,第二生化区为好氧区,可实现多级生化-过滤处理,从而可不设置沉淀池,无需污泥回流和消化液回流,即可去除污水中的污染物和实现泥水分离。通过上述方式,减少了污水处理系统的占地面积,降低了污水处理系统的运行能耗和运营维护管理难度。1. The modular multi-stage biochemical-filtration sewage treatment system proposed by the present invention includes at least one sewage treatment area. Second filtration zone, make the first biochemical zone an anoxic zone and the second biochemical zone an aerobic zone, which can realize multi-stage biochemical-filtration treatment, so that no sedimentation tank is required, and no sludge return and digestive juice return are required. Remove pollutants in sewage and realize mud-water separation. Through the above methods, the floor space of the sewage treatment system is reduced, and the operation energy consumption and the difficulty of operation, maintenance and management of the sewage treatment system are reduced.

2、本发明提出的模块化多级生化-过滤污水处理系统,通过将第一生化区和第二生化区设置成缺氧区、好氧区交替的状态,使过滤系统总体呈现多级AO形式,有助于强化脱氮效果;通过在每一级生化区的末端设置过滤区,可对生化处理后的污水经行过滤,使活性污泥被拦截在生化区,利于延长污泥泥龄,有助于硝化细菌繁殖,促进生物脱氮;通过在过滤区内设置多组可拆卸的过滤组件,同时以柔性填料实现过滤的目的,不仅便于对过滤组件进行安装和拆卸,还可在确保过滤效果的同时确保污水在过滤组件内具有高的滤过通量,另外,由于污水是逐个经过过滤组件的,因此只会堵塞先经过的过滤组件,后续的过滤组件不易出现堵塞,再者,可拆卸设置过滤组件的方式可在过滤组件出现堵塞的时候,将其与另一过滤区的末端的过滤组件进行更换,利用内部水进行反洗即可,也可通过离线清洗,上述过程有效解决了过滤组件被堵塞的问题,实现了过滤组件的再循环利用,有效提升了污水处理系统的实用性,此外,过滤组件上的柔性填料的外部好氧,内部局部缺氧,可实现反硝化脱氮和部分同步硝化脱氮功能。本发明提出的污水处理系统,通过利用间隔设置的生化区和过滤区来对污水进行交替的生化-过滤处理,同时在过滤区内部设置能够促进脱氮效果的柔性填料提升脱氮效果,此外,在实际应用中时,还可根据需要增设污水处理区,通过上述方式,有效提升了污水处理效率,并能不设置沉淀池就实现污水生化处理与泥水分离一体化,有效减少了污水处理过程成本。2. The modularized multi-stage biochemical-filtration sewage treatment system proposed by the present invention, by setting the first biochemical zone and the second biochemical zone into an alternate state of anoxic zone and aerobic zone, the filtration system as a whole presents a multi-stage AO form , which helps to strengthen the denitrification effect; by setting up a filter zone at the end of each biochemical zone, the sewage after biochemical treatment can be filtered, so that the activated sludge is intercepted in the biochemical zone, which is beneficial to prolong the sludge age. It is helpful for the reproduction of nitrifying bacteria and promotes biological denitrification; by setting up multiple sets of detachable filter components in the filter area, and at the same time using flexible packing to achieve the purpose of filtration, it not only facilitates the installation and removal of the filter components, but also ensures the filtration process. At the same time, it ensures that the sewage has a high filtration flux in the filter element. In addition, since the sewage passes through the filter element one by one, it will only block the filter element that passes through first, and the subsequent filter element is not easy to be blocked. The method of disassembling and setting the filter assembly can replace the filter assembly with the filter assembly at the end of another filter area when the filter assembly is blocked, and use the internal water for backwashing, or offline cleaning. The above process effectively solves the problem. The problem of the blockage of the filter component realizes the recycling of the filter component, which effectively improves the practicability of the sewage treatment system. In addition, the flexible packing on the filter component is aerobic externally and partially oxygen-deficient inside, which can realize denitrification and denitrification. and partial simultaneous nitrification and denitrification. The sewage treatment system proposed by the present invention performs alternate biochemical-filtration treatment on sewage by utilizing the biochemical zones and filter zones arranged at intervals, and meanwhile, flexible fillers that can promote the denitrification effect are arranged inside the filter zone to improve the denitrification effect. In addition, In practical applications, sewage treatment areas can also be added as needed. Through the above methods, the efficiency of sewage treatment can be effectively improved, and the integration of sewage biochemical treatment and mud-water separation can be realized without setting up a sedimentation tank, which effectively reduces the cost of sewage treatment process. .

附图说明Description of drawings

图1为本发明的模块化多级生化-过滤污水处理系统的结构示意图;Fig. 1 is the structural representation of the modularized multi-stage biochemical-filtration sewage treatment system of the present invention;

图2为图1中的过滤组件的结构示意图;Fig. 2 is the structural representation of the filter assembly in Fig. 1;

图3为图2中的单个过滤组件的结构示意图;Fig. 3 is the structural representation of the single filter assembly in Fig. 2;

图4为图3中的过滤组件的结构示意图;Fig. 4 is the structural representation of the filter assembly in Fig. 3;

图5为本发明的模块化多级生化-过滤污水处理系统的流程图;Fig. 5 is the flow chart of the modularized multi-stage biochemical-filtration sewage treatment system of the present invention;

附图标记如下:The reference numbers are as follows:

100、模块化多级生化-过滤污水处理系统;10、污水处理区;20、第一生化区;21、进水口;30、第一过滤区;31、过滤组件;311、固定骨架;312、柔性填料;40、第二生化区;50、第二过滤区;51、清水区;511、出水口;60、曝气装置。100. Modular multi-stage biochemical-filtration sewage treatment system; 10. Sewage treatment area; 20. First biochemical area; 21. Water inlet; 30. First filtration area; 31. Filter assembly; 311. Fixed frame; 312, Flexible packing; 40, the second biochemical zone; 50, the second filter zone; 51, the clean water zone; 511, the water outlet; 60, the aeration device.

具体实施方式Detailed ways

为了使本发明的目的、技术方案和优点更加清楚,下面结合附图和具体实施例对本发明进行详细描述。In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

在此,还需要说明的是,为了避免因不必要的细节而模糊了本发明,在附图中仅仅示出了与本发明的方案密切相关的结构和/或处理步骤,而省略了与本发明关系不大的其他细节。Here, it should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and/or processing steps closely related to the solution of the present invention are shown in the drawings, and the Invent other details that are less relevant.

另外,还需要说明的是,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。In addition, it should be noted that the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device comprising a series of elements includes not only those elements, but also Also included are other elements not expressly listed or inherent to such a process, method, article or apparatus.

请参阅图1至5所示,本发明提供的模块化多级生化-过滤污水处理系统100,上述污水处理系统至少包括一个污水处理区10,每个污水处理区包括依次连通的第一生化区20、第一过滤区30、第二生化区40及第二过滤区50,第一生化区20的一侧与进水口21连接,第二过滤区50的末端与清水区51相连,清水区51的末端设有出水口511,第一生化区20和第二生化区40的底部设置曝气装置60,以便控制上述生化区为缺氧或好氧状态。通过利用上述系统对污水进行多级生化处理和过滤处理,实现了污水生化处理和泥水分离一体化,提高了污水中固体悬浮物的去除效率,并能提高脱氮效果。Please refer to FIGS. 1 to 5 , the modular multi-stage biochemical-filtration sewage treatment system 100 provided by the present invention, the sewage treatment system at least includes one sewage treatment area 10, and each sewage treatment area includes a first biochemical area connected in sequence 20. The first filter zone 30, the second biochemical zone 40 and the second filter zone 50, one side of the first biochemical zone 20 is connected to the water inlet 21, the end of the second filter zone 50 is connected to the clean water zone 51, and the clean water zone 51 A water outlet 511 is provided at the end of the first biochemical zone 20 and the bottom of the second biochemical zone 40 is provided with an aeration device 60 to control the above-mentioned biochemical zones to be in anoxic or aerobic state. By using the above system for multi-stage biochemical treatment and filtration treatment of sewage, the integration of sewage biochemical treatment and mud-water separation is realized, the removal efficiency of suspended solids in sewage is improved, and the denitrification effect can be improved.

请参阅图1至图4所示,第一生化区20和第二生化区40的底部设置曝气装置60,使第一生化区20为缺氧区,第二生化区40为好氧区,污水在第一生化区20内发生反硝化反应,在第二生化区40内发生硝化反应,且污水在第一生化区20和第二生化区40的停留时间为2~6h,确保生化反应的充分进行,同时还可利于污水中的污泥进行沉降。Please refer to FIGS. 1 to 4 , an aeration device 60 is provided at the bottom of the first biochemical zone 20 and the second biochemical zone 40, so that the first biochemical zone 20 is an anoxic zone, and the second biochemical zone 40 is an aerobic zone, The denitrification reaction occurs in the first biochemical zone 20, and the nitrification reaction occurs in the second biochemical zone 40, and the residence time of the sewage in the first biochemical zone 20 and the second biochemical zone 40 is 2 to 6 hours, ensuring the biochemical reaction It is fully carried out, and at the same time, it is also conducive to the sedimentation of the sludge in the sewage.

进一步地,第一过滤区30设置于第一生化区20的末端,第一过滤区30内并排设置若干可拆卸的过滤组件31,过滤组件31的个数为1~20,在该个数的过滤组件31下,既可确保过滤效果,同时便于过滤后的水体顺利通过;过滤组件31包括固定骨架311和分别设置于固定骨架311两侧的柔性填料312,固定骨架311为四边形,固定骨架311内设有用于固定柔性填料的固定件(图中未标号),以确保柔性填料312能够稳定固定于固定骨架311上,并能满足污水处理过程中对过滤组件31的强度要求,每一侧的柔性填料312的厚度为2~5cm,由于过滤区处于缺氧状态,因而柔性填料312上能够生长一定量的反硝化微生物,从而提高反硝化脱氮效果,本实施例中的柔性填料312为聚氨酯海绵,在另一些实施例中也可以为其他材料,只要能够满足过滤时对过滤组件31的强度、过滤阻力及过滤通量的要求即可,此处不以此为限。Further, the first filter zone 30 is arranged at the end of the first biochemical zone 20, and a number of detachable filter assemblies 31 are arranged side by side in the first filter zone 30, and the number of the filter assemblies 31 is 1-20. Under the filter assembly 31, the filtering effect can be ensured, and the filtered water body can pass through smoothly; There is a fixing member (not numbered in the figure) for fixing the flexible packing to ensure that the flexible packing 312 can be stably fixed on the fixed frame 311 and can meet the strength requirements of the filter assembly 31 in the sewage treatment process. The thickness of the flexible filler 312 is 2-5 cm. Since the filtration area is in an oxygen-deficient state, a certain amount of denitrifying microorganisms can grow on the flexible filler 312, thereby improving the denitrification and denitrification effect. The flexible filler 312 in this embodiment is polyurethane The sponge can also be other materials in other embodiments, as long as it can meet the requirements on the strength, filtration resistance and filtration flux of the filter element 31 during filtration, which is not limited here.

特别地,过滤组件31可拆卸设置于第一过滤区30,具体地,第一过滤区30内设有若干安装卡槽(图中未示出),过滤组件31的固定骨架311上的相应位置设有可卡设于安装卡槽内的安装块(图中未标号),且安装卡槽的个数不小于安装块的个数,如此设置,可便于对过滤组件31进行安装和拆卸;另外,当第一过滤区30出现堵塞时,可将靠近第一过滤区30的过滤组件31与第二过滤区50末端的过滤组件31进行更换,并将从第一过滤区30上换下的过滤组件31安装至第二过滤区50末端,同时使过滤组件31的过滤面朝外,利用系统内部水力对过滤面进行反洗,也可直接对拆下的过滤组件31离线清洗。通过上述设置,可使经过预处理的污水依次经过每一级生化区和过滤区,交替对污水进行生化和过滤处理,从而使污水中的污染物浓度和活性污泥浓度逐级降低,同时,每次过滤后活性污泥均被截留在过滤区,实现了污泥和水力的分离,延长污泥泥龄,有助于硝化细菌繁殖,促进生物脱氮。第二过滤区50设置于第二生化区40的末端,其结构和第一过滤区30基本一致,在此不再赘述。需要说明的是,实际应用过程中还可根据污水内的污染物的情况对污水处理区的组成进行调整,当污水中的污染物浓度很低时也可只设置第一生化区20和第一过滤区30;当污水中的污染物浓度很高时,可根据实际需要适应性增加污水处理区,本领域技术人员应当理解,增设污水处理池后,应使首个第一生化区20与进水口21连接,最后一个第二过滤区50与清水区51相连。In particular, the filter assembly 31 is detachably disposed in the first filter area 30 . Specifically, the first filter area 30 is provided with several installation slots (not shown in the figure), and the corresponding positions on the fixed frame 311 of the filter assembly 31 There is an installation block (not numbered in the figure) that can be clamped in the installation slot, and the number of the installation slot is not less than the number of the installation block. This arrangement can facilitate the installation and disassembly of the filter assembly 31; in addition , when the first filter area 30 is blocked, the filter element 31 near the first filter area 30 and the filter element 31 at the end of the second filter area 50 can be replaced, and the filter element 31 removed from the first filter area 30 can be replaced. The component 31 is installed at the end of the second filter area 50, and the filter surface of the filter component 31 is facing outward, and the filter surface is backwashed by the hydraulic power inside the system, and the removed filter component 31 can also be directly cleaned offline. Through the above arrangement, the pretreated sewage can pass through each biochemical zone and filtration zone in turn, and the sewage is biochemically and filtered alternately, so that the concentration of pollutants and the concentration of activated sludge in the sewage is gradually reduced. After each filtration, the activated sludge is trapped in the filtration area, which realizes the separation of sludge and hydraulics, prolongs the sludge age, helps the reproduction of nitrifying bacteria, and promotes biological denitrification. The second filter zone 50 is disposed at the end of the second biochemical zone 40, and its structure is basically the same as that of the first filter zone 30, and details are not described herein again. It should be noted that in the actual application process, the composition of the sewage treatment area can also be adjusted according to the pollutants in the sewage. When the concentration of pollutants in the sewage is very low, only the first biochemical zone 20 and the first biochemical zone can be set. Filtration zone 30; when the concentration of pollutants in the sewage is very high, the sewage treatment zone can be adaptively added according to actual needs. Those skilled in the art should understand that after the sewage treatment tank is added, the first first biochemical zone 20 should be connected to the inlet. The water port 21 is connected, and the last second filter area 50 is connected to the clean water area 51 .

本发明的工作原理:应用本发明提出的块化多级生化-过滤污水处理系统100进行污水处理时,先通过进水口21将经过预处理的污水引入第一生化区20,由于该区域为缺氧状态,该区域内发生反硝化反应,接着,经过第一生化区20处理的水力经过第一过滤区30,第一过滤区30内的过滤组件31可对水力中的活性污泥进行截留,使淤泥停留在第一生化区20内。然后,经过第一过滤区30过滤的水体进入好氧的第二生化区40进行第二次生化反应,最后经第二过滤区50的过滤作用即得到干净的水体,若此时的水体内仍存在污染物,可通过增设污水处理区进一步对水体进行生化和过滤处理,直至水体内无污染物。The working principle of the present invention: when applying the block multi-stage biochemical-filtration sewage treatment system 100 proposed by the present invention for sewage treatment, the pretreated sewage is first introduced into the first biochemical zone 20 through the water inlet 21. Oxygen state, denitrification reaction occurs in this area, and then, the hydraulic power processed by the first biochemical zone 20 passes through the first filter zone 30, and the filter assembly 31 in the first filter zone 30 can intercept the activated sludge in the hydraulic power, The sludge is allowed to stay in the first biochemical zone 20 . Then, the water body filtered by the first filtration zone 30 enters the aerobic second biochemical zone 40 for the second biochemical reaction, and finally, through the filtering action of the second filtration zone 50, a clean water body is obtained. If there are pollutants, the water body can be further biochemically treated and filtered by adding a sewage treatment area until the water body is free of pollutants.

综上所述,本发明模块化多级生化-过滤污水处理系统100,上述污水处理系统至少包括一个污水处理区,污水处理区包括依次连通的第一生化区20、第一过滤区30、第二生化区40及第二过滤区50;第一生化区20的一侧与进水口21连接,第二过滤区50的末端与清水区51相连,清水区51的末端设有出水口511,第一生化区20和第二生化区40的底部与曝气装置60连接,污水处理系统能够实现污水生化处理和泥水分离一体化;通过使第一生化区20为缺氧区,第二生化区40为好氧区,可实现多级生化-过滤处理。通过上述方式,有效提升了污水处理效率,并能不设置沉淀池就实现污水生化处理与泥水分离一体化,有效减少了污水处理过程的成本。To sum up, the modular multi-stage biochemical-filtration sewage treatment system 100 of the present invention includes at least one sewage treatment area, and the sewage treatment area includes the first biochemical area 20, the first filtering area 30, the first Two biochemical zones 40 and a second filter zone 50; one side of the first biochemical zone 20 is connected to the water inlet 21, the end of the second filter zone 50 is connected to the clean water zone 51, the end of the clean water zone 51 is provided with a water outlet 511, The bottoms of the biochemical zone 20 and the second biochemical zone 40 are connected to the aeration device 60, and the sewage treatment system can realize the integration of sewage biochemical treatment and mud-water separation; by making the first biochemical zone 20 an anoxic zone, the second biochemical zone 40 For the aerobic zone, multi-stage biochemical-filtration treatment can be realized. Through the above method, the efficiency of sewage treatment is effectively improved, and the integration of sewage biochemical treatment and mud-water separation can be realized without setting up a sedimentation tank, which effectively reduces the cost of the sewage treatment process.

以上实施例仅用以说明本发明的技术方案而非限制,尽管参照较佳实施例对本发明进行了详细说明,本领域的普通技术人员应当理解,可以对本发明的技术方案进行修改或者等同替换,而不脱离本发明技术方案的精神和范围。The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced. Without departing from the spirit and scope of the technical solutions of the present invention.

Claims (10)

1. A modular multistage biochemical-filtration sewage treatment system is characterized by at least comprising a sewage treatment area, wherein the sewage treatment area comprises a first biochemical area, a first filtering area, a second biochemical area and a second filtering area which are sequentially communicated;
one side of the first biochemical region is connected with the water inlet, the tail end of the second filtering region is connected with the clean water region, the tail end of the clean water region is provided with a water outlet, the bottoms of the first biochemical region and the second biochemical region are provided with aeration devices, and the sewage treatment system can realize the integration of sewage biochemical treatment and mud-water separation.
2. The modular multistage biochemical-filtration wastewater treatment system of claim 1, wherein the first biochemical zone is an anoxic zone and the second biochemical zone is an aerobic zone.
3. The modular multistage biochemical-filtration wastewater treatment system according to claim 1, wherein the residence time of the wastewater in the first biochemical zone and the second biochemical zone is 2-6 h.
4. The modular multistage biochemical-filtration wastewater treatment system according to claim 1, wherein a plurality of detachable filtration components are arranged in the first filtration zone side by side, and each filtration component comprises a fixed framework and flexible fillers respectively arranged at two sides of the fixed framework.
5. The modular multistage biochemical-filtration wastewater treatment system according to claim 4, wherein the flexible packing has a thickness of 2-5 cm.
6. The modular multistage biochemical-filtration wastewater treatment system according to claim 4, wherein the number of filtration modules is 1 to 20.
7. The modular multistage biochemical-filtration sewage treatment system according to claim 6, wherein a plurality of mounting slots are provided in the first filtration zone, and mounting blocks capable of being clamped in the mounting slots are provided at corresponding positions on the fixed frame.
8. The modular multistage biochemical-filtration wastewater treatment system according to claim 7, wherein the number of mounting slots is not less than the number of mounting blocks.
9. The modular multistage biochemical-filtration sewage treatment system according to claim 4, wherein the fixed frame is quadrilateral, and a fixing piece for fixing the flexible filler is arranged in the fixed frame.
10. The modular multistage biochemical-filtration wastewater treatment system according to claim 1, wherein the first filtration zone and the second filtration zone are anoxic zones.
CN202210845739.7A 2022-07-19 2022-07-19 Modular multistage biochemical-filtering sewage treatment system Pending CN115231704A (en)

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