WO2022057121A1 - 一种用于污水处理的在线除磷装置及方法 - Google Patents

一种用于污水处理的在线除磷装置及方法 Download PDF

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Publication number
WO2022057121A1
WO2022057121A1 PCT/CN2020/136837 CN2020136837W WO2022057121A1 WO 2022057121 A1 WO2022057121 A1 WO 2022057121A1 CN 2020136837 W CN2020136837 W CN 2020136837W WO 2022057121 A1 WO2022057121 A1 WO 2022057121A1
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Prior art keywords
water inlet
filter
assembly
component
water outlet
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PCT/CN2020/136837
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English (en)
French (fr)
Inventor
郑航桅
马成涛
陆斌
庞维海
孙国胜
刘源
谢丽
尹大强
Original Assignee
广东粤海水务股份有限公司
同济大学
哈尔滨工业大学水资源国家工程研究中心有限公司
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Publication of WO2022057121A1 publication Critical patent/WO2022057121A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5281—Installations for water purification using chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/105—Phosphorus compounds
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F3/00—Biological treatment of water, waste water, or sewage
    • C02F3/30—Aerobic and anaerobic processes
    • C02F3/301—Aerobic and anaerobic treatment in the same reactor

Definitions

  • the present invention relates to the technical field of sewage treatment, and more particularly, to an on-line phosphorus removal device and method for sewage treatment.
  • Phosphorus as an important element, provides essential nutrients for microbial growth. Sewage contains a lot of phosphorus, and the water body is prone to eutrophication. For this reason, phosphorus in effluent from sewage treatment plants is an important control target. In order to eliminate the harm caused by phosphorus, the existing sewage treatment plants generally adopt the biological phosphorus removal process. However, due to the high technical requirements for control, the biological phosphorus removal process cannot achieve the expected goal, and the unstable phosphorus removal process makes the phosphorus concentration in the effluent of the sewage plant unable to be controlled below the discharge standard.
  • Patent CN201910260478.0 discloses a medium and high concentration comprehensive sewage denitrification and phosphorus removal treatment process, which adopts high-efficiency air flotation depth pretreatment ⁇ anoxic, anaerobic, aerobic biochemical tank treatment and mud water separation ⁇ two-stage chemical phosphorus removal and chemical mixing Coagulation and sedimentation ⁇ continuous sand filtration and effluent process route; design two-point dosing, respectively, high-efficiency air flotation dosing for deep pretreatment, preliminary removal of TP in sewage, and dosing in the coagulation stage for further TP. Deep removal.
  • the above scheme adopts the method of chemical phosphorus removal.
  • the inorganic salt is put into the sewage to chemically react with the phosphorus in the sewage to form a granular substance, and the corresponding solid-liquid separation is carried out; however, because it adopts post-precipitation phosphorus removal. In this way, the equipment is cumbersome and the cost of sewage treatment is greatly increased.
  • the object of the present invention is to overcome the deficiencies in the prior art, and to provide an on-line phosphorus removal device and method for sewage treatment, which floats in the biochemical tank for on-line phosphorus removal, prevents inorganic sludge from entering the biochemical tank, effectively recovers phosphorus, and
  • the device has simple structure and low production cost.
  • the technical scheme adopted in the present invention is:
  • an on-line phosphorus removal device for sewage treatment comprising a water inlet assembly, a filter assembly and a water outlet assembly connected in sequence through a first pipeline, a pipeline pump is arranged between the water inlet assembly and the filter assembly, and the inlet
  • the first pipeline connected between the water component and the filter component is connected with a dosing component
  • the dosing component adds a coagulant that can react with phosphorus to form particles into the first pipeline
  • the dosing component is connected to the pipeline pump. water inlet.
  • the sewage in the activated sludge tank enters the water inlet end of the pipeline pump from the water inlet component, and the sewage at the water inlet end of the pipeline pump is mixed with the oil from the refueling
  • the coagulant of the component is mixed, and the phosphorus in the sewage reacts with the coagulant to form particles;
  • the sewage containing particles enters the filter assembly, the particles in the sewage are retained by the filter assembly, and the clean water flows out from the filter assembly and re-enters the active sewage through the water outlet assembly. in the mud pool.
  • the present invention adopts on-line phosphorus removal in the form of physicochemical, which can effectively recover phosphorus and avoid the pollution caused by the outflow of inorganic sludge;
  • the on-line phosphorus removal device of the present invention is a device that works independently, and is integrated with sewage treatment equipment such as biochemical tanks and secondary sedimentation tanks. There is no connection between them, and it can be put into the corresponding sewage equipment during work, without affecting the operation of other facilities, and the operation is simple and convenient.
  • the water inlet assembly includes a water suction pipe, a first filter cloth and a first filter element, one end of the water suction pipe is communicated with the first pipe, the other end of the water suction pipe extends into the first filter element, and the first filter element is inserted into the first filter element.
  • the filter cloth surrounds the outer circumference of the first filter element, and the first filter cloth and the first filter element are located below the liquid surface.
  • the dosing assembly includes a dosing tank and a peristaltic pump, the dosing tank contains a coagulant, and the peristaltic pump is connected between the dosing tank and the water inlet end of the pipeline pump.
  • a first pipeline mixer is connected between the water outlet end of the pipeline pump and the filter assembly.
  • the filter assembly is a bag filter, and the water inlet end of the bag filter is provided with a pressure gauge for monitoring the particle retention.
  • the water outlet assembly includes a water outlet pipe, a second filter cloth and a second filter element.
  • One end of the water outlet pipe is connected to the first pipe, and the other end of the water suction pipe extends into the second filter element.
  • the cloth surrounds the outer circumference of the second filter element, and the second filter cloth and the second filter element are located below the liquid surface.
  • a partition plate for preventing the formation of short flow is provided between the water inlet component and the water outlet component.
  • the first pipeline is provided with a first water inlet valve and a first water outlet valve, the first water inlet valve is arranged between the water inlet component and the pipeline pump, and the first water outlet valve is arranged between the filter component and the pipeline pump. between the water outlet components.
  • a second pipeline is connected between the water outlet component and the water inlet end of the pipeline pump, and between the water inlet component and the water outlet end of the filter component.
  • the second pipeline is provided with a second water inlet valve and a second water outlet valve, the second water inlet valve is provided between the water outlet component and the water inlet end of the pipeline pump, and the second water outlet valve is provided. between the water inlet component and the water outlet end of the filter component.
  • the present invention also provides an on-line phosphorus removal method for sewage treatment, comprising the following steps:
  • the first water inlet valve and the first water outlet valve are opened, the sewage flows into the first pipeline through the water inlet component, and the dosing component adds coagulant into the first pipeline;
  • the coagulant is fully mixed with the sewage, and the phosphorus in the sewage fully reacts with the coagulant to form particulate matter;
  • the online phosphorus removal method for sewage treatment of the present invention adopts the physical and chemical form of online phosphorus removal, which can effectively recover phosphorus and avoid pollution caused by the outflow of inorganic sludge; the functions of the water inlet component and the water outlet component are interchangeable, and can The water components are backwashed to extend the service life of the water inlet components.
  • the present invention adopts on-line phosphorus removal in the form of physicochemical, which can effectively recover phosphorus and avoid pollution caused by the outflow of inorganic sludge;
  • the on-line phosphorus removal device of the present invention is an independent working device, which is connected with sewage treatment equipment such as biochemical ponds and secondary sedimentation tanks. There is no connection between them, and they can be put into the corresponding sewage equipment during work, without affecting the operation of other facilities, and the operation is simple and convenient; It can effectively save the dosage of the dosing component.
  • Fig. 1 is the structural representation 1 of the on-line phosphorus removal device for sewage treatment
  • Fig. 2 is the structural representation II of the on-line phosphorus removal device used for sewage treatment
  • 1-water inlet assembly 11-suction pipe; 12-first filter cloth; 13-first filter element; 14-first plug; 2-filter assembly; 3-water outlet assembly; 31-water outlet pipe; 32-second filter cloth; 33-second filter element; 34-second plug; 4-first pipeline; 41-first inlet valve; 42-first outlet valve; 43-pipeline pump; 5-dosing Component; 51-dosing tank; 52-peristaltic pump; 6-mixer; 7-pressure gauge; 8-partition; 9-second pipeline; 91-second water inlet valve; 92-second water outlet valve.
  • Figures 1 to 2 show an embodiment of the on-line phosphorus removal device for sewage treatment according to the present invention, which includes a water inlet assembly 1, a filter assembly 2 and a water outlet assembly 3 connected in sequence through a first pipeline 4.
  • a pipeline pump 43 is arranged between the component 1 and the filter component 2, and the first pipeline 4 connected between the water inlet component 1 and the filter component 2 is connected with the dosing component 5, and the dosing component 5 can be added to the first pipeline 4.
  • Phosphorus reacts to form a granular coagulant, and the dosing component 5 is connected to the water inlet end of the pipeline pump 43 .
  • this embodiment can be provided with a floating piece connected to the online phosphorus removal device, so that the water inlet component 1 and the water outlet component 3 are located below the liquid level and Other parts are located above the liquid level to ensure smooth water inflow and outflow, and also ensure the working stability and service life of other parts of the online phosphorus removal device.
  • the sewage in the activated sludge tank enters the water inlet end of the pipeline pump 43 from the water inlet component 1, and the sewage at the water inlet end of the pipeline pump 43 and the sewage from the fueling component
  • the coagulant is mixed, and the phosphorus in the sewage reacts with the coagulant to form particles; the sewage containing particles enters the filter assembly 2, the particles in the sewage are retained by the filter assembly 2, and the clean water flows out from the filter assembly 2 and re-enters through the water outlet assembly 3 in the activated sludge tank.
  • the water inlet assembly 1 includes a suction pipe 11 , a first filter cloth 12 and a first filter element 13 , one end of the suction pipe 11 is communicated with the first pipe 4 , and the other end of the suction pipe 11 extends into the first Inside the filter element 13, the first filter cloth 12 surrounds the outer circumference of the first filter element 13, and the first filter cloth 12 and the first filter element 13 are located below the liquid level.
  • the water inlet component 1 not only plays the role of water intake, but also filters the sewage entering the online phosphorus removal device, so as to prevent particulate matter or activated sludge in the sewage from entering the online phosphorus removal device.
  • the sewage flows through the first filter cloth 12 and enters the first filter element 13, the particulate matter in the sewage is blocked, and the filtered sewage flows out from the first filter element 13 and enters the first pipe through the suction pipe 11 under the action of the pipeline pump 43 4.
  • a first inspection hole is provided at the bottom of the first filter element 13, and a first plug 14 is provided at the first inspection hole to prevent Liquid leaks.
  • the dosing assembly 5 includes a dosing tank 51 and a peristaltic pump 52 , the dosing tank 51 contains a coagulant, and the peristaltic pump 52 is connected between the dosing tank 51 and the water inlet end of the pipeline pump 43 , the conveying speed of the peristaltic pump 52 can be determined according to the phosphorus content in the sewage, the pumping speed of the pipeline pump 43, the type and content of the coagulant and other factors.
  • the peristaltic pump 52 works, and the coagulant pump in the dosing tank 51 is mixed with the sewage to the front end of the pipeline pump 43 and reacts with the phosphorus in the sewage to achieve the purpose of phosphorus removal.
  • the dosing assembly 5 of this embodiment is not limited to the use of the dosing tank 51 and the peristaltic pump 52 , and the metering pump, booster pump, etc. can pump coagulant to the front end of the pipeline pump 43 or can pump the coagulant to the pipeline pump 43 .
  • the water pump that pumps the coagulant quantitatively at the front end can all be applicable to the present invention; the medicament contained in the dosing tank 51 is not limited to one kind of coagulant, and the dosing tank 51 can contain coagulant and other medicaments according to application needs or when necessary, multiple groups of dosing components 5 can be set up to respectively pump medicaments with different effects to the water inlet end of the pipeline pump 43 or other positions of the first pipeline 4 .
  • a mixer 6 in a first pipeline 4 is connected between the water outlet end of the pipeline pump 43 and the filter assembly 2 .
  • the sewage and the coagulant added by the dosing component 5 have been mixed once in the pipeline pump 43, but in this embodiment, in order to obtain a better mixing effect and a more thorough phosphorus removal effect, this embodiment
  • a mixer 6 is provided so that the sewage flowing out of the pipeline pump 43 is mixed again in the mixer 6, and a corresponding mechanical stirring device can be installed in the mixer 6 to promote the mixing of sewage and the reaction of phosphorus and coagulant.
  • the setting of the mixer 6 in this embodiment is an optimization made to obtain a better mixing effect and a more thorough phosphorus removal effect, and is not a limitation of the present invention.
  • the filter assembly 2 is a bag filter, and a pressure gauge 7 for monitoring the particle retention is provided at the water inlet end of the bag filter.
  • the filtration accuracy of the bag filter can be obtained according to the reaction to obtain the particle size distribution. Make sure.
  • the bag filter is selected because of its easy availability, low cost and good filtering effect, and is not a limitation of the present invention.
  • the sewage and coagulant are fully mixed and reacted in the mixer 6 and then enter the bag filter for filtration.
  • the bag filter retains phosphorus-containing particles and other particles in the sewage, while the clean water flows out of the bag filter.
  • the pressure gauge 7 reaches the set pressure value, it means that the particle retention capacity of the bag filter has reached saturation, and the staff can be prompted to replace the bag filter at this time.
  • the water outlet assembly 3 includes a water outlet pipe 31, a second filter cloth 32 and a second filter element 33.
  • One end of the water outlet pipe 31 is communicated with the first pipe 4, and the other end of the water suction pipe 11 extends into the second filter element.
  • the second filter cloth 32 surrounds the outer circumference of the second filter element 33, and the second filter cloth 32 and the second filter element 33 are located below the liquid level.
  • the clean water flowing out of the bag filter flows into the water outlet pipe 31, and is filtered by the second filter cloth 32 and the second filter element 33, and then enters the biochemical tank again.
  • the filtration accuracy of the second filter cloth 32 and the second filter element 33 can be set higher than that of the bag filter
  • the filtration accuracy of the type filter can obtain clean water with less particulate content.
  • a second inspection hole is provided at the bottom of the second filter element 33, and a second plug 34 is provided at the second inspection hole to prevent Liquid leaks.
  • the water outlet assembly 3 and the water inlet assembly 1 in this embodiment can be set to be consistent, symmetrically arranged on both sides of the online phosphorus removal device, and the first filter element 13 and the second filter element 13 The upper and lower end surfaces of the filter element 33 are respectively arranged flush.
  • a partition 8 for preventing the formation of short flow is provided between the water inlet assembly 1 and the water outlet assembly 3 .
  • the setting of the baffle 8 can avoid the formation of short flow between the first filter element 13 and the second filter element 33.
  • the sewage must enter from the water inlet assembly 1 and flow through the online phosphorus removal device to be treated for phosphorus removal before it can flow out from the water outlet assembly 3. Ensure the effectiveness of the online phosphorus removal device.
  • the first pipeline 4 is provided with a first water inlet valve 41 and a first water outlet valve 42 , the first water inlet valve 41 is arranged between the water inlet assembly 1 and the pipeline pump 43 , and the first water outlet valve 42 It is arranged between the filter assembly 2 and the water outlet assembly 3 .
  • the first water inlet valve 41 and the first water outlet valve 42 in this embodiment are electric valves, which can automatically control the water inlet and outlet processes without manual participation.
  • a second pipeline 9 is connected between the water outlet assembly 3 and the water inlet end of the pipeline pump 43 , and between the water inlet assembly 1 and the water outlet end of the filter assembly 2 .
  • the second pipeline 9 is provided with a second water inlet valve 91 and a second water outlet valve 92, the second water inlet valve 91 is arranged between the water outlet assembly 3 and the water inlet end of the pipeline pump 43, and the second water outlet valve 92 It is arranged between the water inlet component 1 and the water outlet end of the filter component 2 .
  • the first water inlet valve 41 and the first water outlet valve 42 can be closed, and the second water inlet valve 91 and the second water outlet valve 92 can be opened, and the functions of the water inlet assembly 1 and the water outlet assembly 3 are interchanged, and the At the same time, the first filter cloth 12 on the first filter element 13 can be backwashed, so as to ensure that the first filter cloth 12 is not blocked by dirt and prolong the service life of the water inlet assembly 1 and the water outlet assembly 3 .
  • the second water inlet valve 91 and the second water outlet valve 92 in this embodiment are electric valves, which can automatically control the water inlet and outlet processes without manual participation.
  • the online phosphorus removal device further includes a controller, the first water inlet valve 41 , the first water outlet valve 42 , the second water inlet valve 91 , and the second water outlet valve 92 are connected to the output end of the controller, and are connected to the output end of the controller.
  • the controller controls; the pressure gauge 7 is connected to the input end of the controller as an input signal of the controller.
  • the switching time interval between the first water inlet valve 41, the first water outlet valve 42 and the second water inlet valve 91 and the second water outlet valve 92 is determined by the working cycle of the online phosphorus removal device, and an alarm can be connected to the output end of the controller
  • the module sends out an alarm signal to prompt the staff to replace the filter bag of the bag filter.
  • This embodiment is an embodiment of the application method of the online phosphorus removal device for sewage treatment in the first embodiment, which includes the following steps:
  • the coagulant is fully mixed with the sewage, and the phosphorus in the sewage fully reacts with the coagulant to form particulate matter;
  • the dosing assembly 5 includes a dosing tank 51 and a peristaltic pump 52 .
  • the dosing tank 51 contains a coagulant
  • the peristaltic pump 52 is connected between the dosing tank 51 and the water inlet end of the pipeline pump 43 .
  • the peristaltic pump 52 can be connected to the output end of the controller, and is automatically controlled by the controller.
  • step S20 the coagulant and sewage can be mixed twice, the first mixing is in the pipeline pump 43 , and the second mixing occurs in the mixer 6 .
  • step S30 the filter assembly 2 is a bag filter, and when the pressure value monitored by the pressure gauge 7 at the water inlet of the bag filter reaches the set pressure value, it means that the particle retention of the bag filter has reached saturation, At this point, the staff can be prompted to replace the bag filter.
  • step S40 the functions of the water inlet assembly 1 and the water outlet assembly 3 are interchanged.
  • the original water inlet assembly 1 can be backwashed to prevent fouling, and on the other hand, the functions of the water inlet assembly 1 and the water outlet assembly 3 after the interchange can be maintained.
  • the phosphorus removal operation is carried out normally, and the switching is carried out again after the working cycle T.
  • Phosphorus is removed from a sewage treatment station by the above method.
  • the treatment capacity of this sewage treatment station is 100 tons/day.
  • the process is: anaerobic/anoxic/aerobic + coagulation + sedimentation + filtration:
  • the COD concentration of the raw water of the sewage is 80-120 mg/L, the ammonia nitrogen concentration is 12-15 mg/L, the total nitrogen concentration is 20-28 mg/L, and the total phosphorus concentration is 4-7 mg/L; After "aerobic + coagulation + precipitation + filtration” treatment, the total phosphorus content of the effluent from this process is 0.4 mg/L.
  • the online dephosphorization device of the first embodiment (the circulating flow of the pipeline pump 43 is 10 m 3 /h) is placed in the anaerobic section of the biochemical tank, and the "coagulation+precipitation+filtration” section of the process is closed, according to the second embodiment.
  • the on-line phosphorus removal method operated continuously for 30 days.

Abstract

一种用于污水处理的在线除磷装置及方法，包括通过第一管道（4）顺次连接的进水组件（1）、过滤组件（2）以及出水组件（3），所述进水组件（1）与过滤组件（2）之间设有管道泵（43），所述进水组件（1）与过滤组件（2）间连接的第一管道（4）连通有加药组件（5），所述加药组件（5）向第一管道（4）内投加可与磷反应形成颗粒的混凝剂，所述加药组件（5）连接于管道泵（43）的进水端。用于污水处理的在线除磷装置采用物化的形式在线除磷，可有效回收磷且避免无机污泥流出导致的污染；为独立工作的装置，与其他设备之间并无连接，工作时将其放入对应的污水设备中即可，不影响其他设施的运转，操作简单方便；因其工作的灵活性，可在厌氧释磷阶段就开启运行，可有效节省加药组件的投药量。

Description

一种用于污水处理的在线除磷装置及方法 技术领域
本发明涉及污水处理的技术领域，更具体地，涉及一种用于污水处理的在线除磷装置及方法。
背景技术
磷作为一种重要的元素，为微生物生长提供了必要的营养。污水当中含有大量的磷，水体极易出现富营养化的问题。为此，污水处理厂出水中的磷是一项重要的控制目标。为了消除磷带来的危害，现有的污水处理厂一般都采用生物除磷工艺。但是，由于对控制的技术要求高，生物除磷工艺无法达成预期的目标，不稳定的除磷过程，致使污水厂出水中的磷浓度无法控制在排放标准以下。
专利CN201910260478.0公开了一种中高浓度综合污水脱氮除磷处理工艺，采用高效气浮深度预处理→缺氧、厌氧、好氧生化池处理和泥水分离→二段化学除磷加药混凝沉淀→连续砂过滤及出水的工艺处理路线；设计两点加药，分别为高效气浮加药进行深度预处理，对污水中的TP进行初步去除，在混凝阶段加药进一步对TP进行深度去除。上述方案采用化学除磷的方法，将无机盐投入污水当中，使其与污水中磷发生化学反应，形成为颗粒状物质，并进行相应的固液分离；但由于其采用的是后沉淀除磷方式，其设备繁琐，大幅提高污水处理成本。
发明内容
本发明的目的在于克服现有技术中的不足，提供一种用于污水处理的在线除磷装置及方法，漂浮于生化池内在线除磷，可避免无机污泥进入生化池、有效回收磷，且设备结构简单、制作成本低。
为解决上述技术问题，本发明采用的技术方案是：
提供一种用于污水处理的在线除磷装置，包括通过第一管道顺次连接的进水组件、过滤组件以及出水组件，所述进水组件与过滤组件之间设有管道泵，所述进水组件与过滤组件间连接的第一管道连通有加药组件，所述加药组件向第一管道内投加可与磷反应形成颗粒的混凝剂，所述加药组件连接于管道泵的进水端。
本发明的用于污水处理的在线除磷装置，在管道泵的作用下，活性污泥池内的污水由进水组件进入至管道泵的进水端，在管道泵的进水端污水与来自加油组件的混凝剂混合，污水中的磷与混凝剂快速反应形成颗粒；含有颗粒的污水进入 过滤组件，污水中的颗粒物被过滤组件截留，清水从过滤组件流出，经出水组件重新进入活性污泥池内。本发明采用物化的形式在线除磷，可有效回收磷且避免无机污泥流出导致的污染；另外，本发明的在线除磷装置为独立工作的装置，与生化池、二沉池等污水处理设备之间并无连接关系，工作时将其放入对应的污水设备中即可，不影响其他设施的运转，操作简单方便。
进一步地，所述进水组件包括吸水管、第一滤布及第一滤芯，所述吸水管的一端与第一管道连通、吸水管的另一端伸入至第一滤芯内，所述第一滤布环绕于第一滤芯的外周，所述第一滤布、第一滤芯位于液面以下。
进一步地，所述加药组件包括加药罐和蠕动泵，所述加药罐内盛装有混凝剂，所述蠕动泵连接于加药罐与管道泵进水端之间。
进一步地，所述管道泵的出水端与过滤组件之间连接有第一管道混合器。
进一步地，所述过滤组件为袋式过滤器，所述袋式过滤器的进水端设有用于监测颗粒截留量的压力表。
进一步地，所述出水组件包括出水管、第二滤布及第二滤芯，所述出水管的一端与第一管道连通，吸水管的另一端伸入至第二滤芯内，所述第二滤布环绕于第二滤芯的外周，所述第二滤布、第二滤芯位于液面以下。
进一步地，所述进水组件与出水组件之间设有用于防止短流形成的隔板。
进一步地，所述第一管道设有第一进水阀及第一出水阀，所述第一进水阀设于进水组件与管道泵之间，所述第一出水阀设于过滤组件与出水组件之间。
进一步地，所述出水组件与管道泵的进水端之间、进水组件与过滤组件的出水端之间连接有第二管道。
进一步地，所述第二管道上设有第二进水阀和第二出水阀，所述第二进水阀设于出水组件与管道泵的进水端之间，所述第二出水阀设于进水组件与过滤组件的出水端之间。
本发明还提供了一种用于污水处理的在线除磷方法，包括以下步骤：
S10.第一进水阀、第一出水阀开启，污水经进水组件流入第一管道中，加药组件向第一管道内投加混凝剂；
S20.混凝剂与污水充分混合，污水中磷与混凝剂充分反应形成颗粒物；
S30.含有颗粒物的污水进入过滤组件中，过滤组件截留污水中颗粒，清水流出过滤组件至出水组件流出；
S40.当除磷工作时间达到设定周期T时，关闭第一进水阀、第一出水阀，开启第二进水阀、第二出水阀，互换进水组件和出水组件功能，反冲洗原进水组件防止污堵。
本发明的用于污水处理的在线除磷方法，采用物化的形式在线除磷，可有效回收磷且避免无机污泥流出导致的污染；进水组件与出水组件的功能可互换，可对进水组件进行反冲洗，延长进水组件的使用周期。
与现有技术相比，本发明的有益效果是：
本发明采用物化的形式在线除磷，可有效回收磷且避免无机污泥流出导致的污染；另外，本发明的在线除磷装置为独立工作的装置，与生化池、二沉池等污水处理设备之间并无连接关系，工作时将其放入对应的污水设备中即可，不影响其他设施的运转，操作简单方便；因其工作的灵活性，可在厌氧释磷阶段就开启运行，可有效节省加药组件的投药量。
附图说明
图1为用于污水处理的在线除磷装置的结构示意图I；
图2为用于污水处理的在线除磷装置的结构示意图II；
附图中：1-进水组件；11-吸水管；12-第一滤布；13-第一滤芯；14-第一丝堵；2-过滤组件；3-出水组件；31-出水管；32-第二滤布；33-第二滤芯；34-第二丝堵；4-第一管道；41-第一进水阀；42-第一出水阀；43-管道泵；5-加药组件；51-加药罐；52-蠕动泵；6-混合器；7-压力表；8-隔板；9-第二管道；91-第二进水阀；92-第二出水阀。
具体实施方式
下面结合具体实施方式对本发明作进一步的说明。其中，附图仅用于示例性说明，表示的仅是示意图，而非实物图，不能理解为对本专利的限制；为了更好地说明本发明的实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；对本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的。
本发明实施例的附图中相同或相似的标号对应相同或相似的部件；在本发明的描述中，需要理解的是，若有术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构 造和操作，因此附图中描述位置关系的用语仅用于示例性说明，不能理解为对本专利的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。
实施例一
如图1至图2所示为本发明的用于污水处理的在线除磷装置的实施例，包括通过第一管道4顺次连接的进水组件1、过滤组件2以及出水组件3，进水组件1与过滤组件2之间设有管道泵43，进水组件1与过滤组件2间连接的第一管道4连通有加药组件5，加药组件5向第一管道4内投加可与磷反应形成颗粒的混凝剂，加药组件5连接于管道泵43的进水端。为了让本实施例的在线除磷装置漂浮于生化池或其他污水处理设备中，本实施例可设置与在线除磷装置连接的漂浮件，使得进水组件1和出水组件3位于液面以下而其他部分位于液面以上，保证顺利的进水和出水，也保证在线除磷装置其他部分的工作稳定性和使用寿命。
本实施例在实施时，在管道泵43的作用下，活性污泥池内的污水由进水组件1进入至管道泵43的进水端，在管道泵43的进水端污水与来自加油组件的混凝剂混合，污水中的磷与混凝剂快速反应形成颗粒；含有颗粒的污水进入过滤组件2，污水中的颗粒物被过滤组件2截留，清水从过滤组件2流出，经出水组件3重新进入活性污泥池内。
在其中一个实施例中，进水组件1包括吸水管11、第一滤布12及第一滤芯13，吸水管11的一端与第一管道4连通、吸水管11的另一端伸入至第一滤芯13内，第一滤布12环绕于第一滤芯13的外周，第一滤布12、第一滤芯13位于液面以下。进水组件1不仅仅起到进水的作用，还对进入在线除磷装置的污水起到过滤作用，避免污水中的颗粒物或活性污泥进入在线除磷装置。具体地，污水流经第一滤布12进入第一滤芯13，污水中颗粒物被阻挡，经过滤的污水由第一滤芯13流出并在管道泵43的作用下由吸水管11进入至第一管道4。本实施例中，为了便于第一滤芯13及第一滤布12的检修，在第一滤芯13的底部设置有第一检修孔，并在第一检修孔处设置有第一丝堵14以防止液体泄漏。
在其中一个实施例中，加药组件5包括加药罐51和蠕动泵52，加药罐51内盛装有混凝剂，蠕动泵52连接于加药罐51与管道泵43进水端之间，蠕动泵52的输送速度可根据污水中磷含量、管道泵43的泵送速度、混凝剂的种类及含量等因素进行确定。在实施时，蠕动泵52工作，将加药罐51内的混凝剂泵向管 道泵43的前端与污水混合并与污水中磷发生反应起到除磷的目的。但需要说明的是，本实施例的加药组件5不限于采用加药罐51和蠕动泵52，计量泵、增压泵等能够向管道泵43前端泵入混凝剂或能够向管道泵43前端定量泵入混凝剂的水泵均可适用于本发明；加药罐51内盛装的药剂也不限于混凝剂一种，可根据应用需要在加药罐51内盛装混凝剂与其他药剂的混合溶液；或在有需要时，也可设置多组加药组件5分别向管道泵43的进水端或第一管道4的其他位置分别泵入不同功效的药剂。
在其中一个实施例中，管道泵43的出水端与过滤组件2之间连接有第一管道4混合器6。在应用时，污水与加药组件5投加的混凝剂在管道泵43内就已经进行了一次混合，但本实施例中为了获得更好的混合效果和更彻底的除磷效果，本实施例设置混合器6使得流出管道泵43的污水在混合器6内再次混合，混合器6内可设置对应的机械搅拌装置促进污水混合及磷和混凝剂的反应。可见，本实施例设置混合器6是为了获得更好的混合效果和更彻底的除磷效果而做出的优选，并不作为本发明的限制性规定。
在其中一个实施例中，过滤组件2为袋式过滤器，袋式过滤器的进水端设有用于监测颗粒截留量的压力表7，袋式过滤器的过滤精度可根据反应得到颗粒物尺寸分布进行确定。选择袋式过滤器是因其易得、成本低且具有较好的过滤效果而做出的优选，而并不作为本发明的限制性规定。污水与混凝剂在混合器6内充分混合反应后进入袋式过滤器进行过滤，袋式过滤器截留污水中的含磷颗粒物及其他颗粒物，而清水则流出袋式过滤器。当压力表7达到设定压力值时，说明袋式过滤器的颗粒截留量已经达到饱和，此时可提示工作人员更换袋式过滤器。
在其中一个实施例中，出水组件3包括出水管31、第二滤布32及第二滤芯33，出水管31的一端与第一管道4连通，吸水管11的另一端伸入至第二滤芯33内，第二滤布32环绕于第二滤芯33的外周，第二滤布32、第二滤芯33位于液面以下。由袋式过滤器流出的清水流入出水管31，并经第二滤布32、第二滤芯33过滤后重新进入生化池内，第二滤布32及第二滤芯33的过滤精度可设置高于袋式过滤器的过滤精度以获得颗粒物含量更少的清水。本实施例中，为了便于第二滤芯33及第二滤布32的检修，在第二滤芯33的底部设置有第二检修孔，并在第二检修孔处设置有第二丝堵34以防止液体泄漏。为了在线除磷装置的结构稳定性及外表美观性，本实施例的出水组件3和进水组件1可设置为一致，对 称设置在在线除磷装置的两侧，且第一滤芯13、第二滤芯33的上下端面分别平齐设置。
在其中一个实施例中，进水组件1与出水组件3之间设有用于防止短流形成的隔板8。隔板8的设置可避免在第一滤芯13和第二滤芯33之间形成短流，污水必须由进水组件1进入后流经在线除磷装置经过除磷处理后方可从出水组件3流出，确保在线除磷装置的有效性。
在其中一个实施例中，第一管道4设有第一进水阀41及第一出水阀42，第一进水阀41设于进水组件1与管道泵43之间，第一出水阀42设于过滤组件2与出水组件3之间。为便于除磷过程的自动控制，本实施例的第一进水阀41和第一出水阀42均选用电动阀，无需人工参与，即可自动控制进水和出水过程。
在其中一个实施例中，出水组件3与管道泵43的进水端之间、进水组件1与过滤组件2的出水端之间连接有第二管道9。具体地，第二管道9上设有第二进水阀91和第二出水阀92，第二进水阀91设于出水组件3与管道泵43的进水端之间，第二出水阀92设于进水组件1与过滤组件2的出水端之间。在完成一个处理周期后，可关闭第一进水阀41和第一出水阀42，开启第二进水阀91和第二出水阀92，进水组件1和出水组件3的功能互换，工作时可对第一滤芯13上的第一滤布12进行反冲洗，从而保证第一滤布12不被污堵，延长进水组件1和出水组件3的使用寿命。为便于除磷过程的自动控制，本实施例的第二进水阀91和第二出水阀92均选用电动阀，无需人工参与，即可自动控制进水和出水过程。
在其中一个实施例中，在线除磷装置还包括控制器，第一进水阀41、第一出水阀42、第二进水阀91、第二出水阀92连接于控制器的输出端、由控制器进行控制；压力表7连接于控制器的输入端，作为控制器的一输入信号。第一进水阀41、第一出水阀42与第二进水阀91、第二出水阀92之间的切换时间间隔由在线除磷装置的工作周期确定，可在控制器的输出端连接报警模块在压力表7监测的压力值达到设定值时发出报警信号提示工作人员更换袋式过滤器的过滤袋。
实施例二
本实施例为实施例一中用于污水处理的在线除磷装置应用方法的实施例，包括以下步骤：
S10.第一进水阀41、第一出水阀42开启，污水经进水组件1流入第一管道 4中，加药组件5向第一管道4内投加混凝剂；
S20.混凝剂与污水充分混合，污水中磷与混凝剂充分反应形成颗粒物；
S30.含有颗粒物的污水进入过滤组件2中，过滤组件2截留污水中颗粒，清水流出过滤组件2至出水组件3流出；
S40.当除磷工作时间达到设定周期T时，关闭第一进水阀41、第一出水阀42，开启第二进水阀91、第二出水阀92，互换进水组件1和出水组件3功能，反冲洗原进水组件1防止污堵。
步骤S10中，加药组件5包括加药罐51和蠕动泵52，加药罐51内盛装有混凝剂，蠕动泵52连接于加药罐51与管道泵43进水端之间。蠕动泵52可连接在控制器的输出端，由控制器进行自动控制。
步骤S20中，混凝剂与污水可进行两次混合，第一次混合在管道泵43内混合，第二次混合发生在混合器6内。
步骤S30中，过滤组件2为袋式过滤器，在袋式过滤器的进水端设置压力表7监测的压力值达到设定压力值时，说明袋式过滤器的颗粒截留量已经达到饱和，此时可提示工作人员更换袋式过滤器。
步骤S40中，互换进水组件1和出水组件3功能，一方面可对原进水组件1反冲洗防止污堵，一方面也可保持进水组件1和出水组件3互换后的功能、正常进行除磷操作，在工作周期T后进行再次切换。
经过上述方法对一污水处理站进行除磷，该污水处理站的处理能力为100吨/天，工艺为：厌氧/缺氧/好氧+混凝+沉淀+过滤：
污水的原水COD浓度为80～120mg/L，氨氮浓度为12～15mg/L，总氮浓度为20～28mg/L，总磷浓度为4～7mg/L；经工艺“厌氧/缺氧/好氧+混凝+沉淀+过滤”处理后，该工艺出水的总磷含磷为0.4mg/L。将实施例一种的在线除磷装置(管道泵43循环流量为10m 3/h)放至生化池的厌氧段内，关闭工艺的“混凝+沉淀+过滤”段，按照实施例二中的在线除磷方法连续运行30天，与原工艺相比，在总磷去除率维持不变的情况下，节省能耗15％，生化池污泥的VSS/MLSS由过去的0.35提升至0.42，总排泥量减少约20％。
显然，本发明的上述实施例仅仅是为清楚地说明本发明所作的举例，而并非是对本发明的实施方式的限定。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的变化或变动。这里无需也无法对所有的实施 方式予以穷举。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明权利要求的保护范围之内。

Claims (10)

  1. 一种用于污水处理的在线除磷装置，其特征在于，包括通过第一管道(4)顺次连接的进水组件(1)、过滤组件(2)以及出水组件(3)，所述进水组件(1)与过滤组件(2)之间设有管道泵(43)，所述进水组件(1)与过滤组件(2)间连接的第一管道(4)连通有加药组件(5)，所述加药组件(5)向第一管道(4)内投加可与磷反应形成颗粒的混凝剂，所述加药组件(5)连接于管道泵(43)的进水端。
  2. 根据权利要求1所述的用于污水处理的在线除磷装置，其特征在于，所述进水组件(1)包括吸水管(11)、第一滤布(12)及第一滤芯(13)，所述吸水管(11)的一端与第一管道(4)连通、吸水管(11)的另一端伸入至第一滤芯(13)内，所述第一滤布(12)环绕于第一滤芯(13)的外周，所述第一滤布(12)、第一滤芯(13)位于液面以下。
  3. 根据权利要求1所述的用于污水处理的在线除磷装置，其特征在于，所述加药组件(5)包括加药罐(51)和蠕动泵(52)，所述加药罐(51)内盛装有混凝剂，所述蠕动泵(52)连接于加药罐(51)与管道泵(43)进水端之间。
  4. 根据权利要求1所述的用于污水处理的在线除磷装置，其特征在于，所述管道泵(43)的出水端与过滤组件(2)之间连接有第一管道(4)混合器(6)。
  5. 根据权利要求1所述的用于污水处理的在线除磷装置，其特征在于，所述过滤组件(2)为袋式过滤器，所述袋式过滤器的进水端设有用于监测颗粒截留量的压力表(7)。
  6. 根据权利要求1所述的用于污水处理的在线除磷装置，其特征在于，所述出水组件(3)包括出水管(31)、第二滤布(32)及第二滤芯(33)，所述出水管(31)的一端与第一管道(4)连通，吸水管(11)的另一端伸入至第二滤芯(33)内，所述第二滤布(32)环绕于第二滤芯(33)的外周，所述第二滤布(32)、第二滤芯(33)位于液面以下。
  7. 根据权利要求1所述的用于污水处理的在线除磷装置，其特征在于，所述进水组件(1)与出水组件(3)之间设有用于防止短流形成的隔板(8)。
  8. 根据权利要求1所述的用于污水处理的在线除磷装置，其特征在于，所述第一管道(4)设有第一进水阀(41)及第一出水阀(42)，所述第一进水阀(41)设于进水组件(1)与管道泵(43)之间，所述第一出水阀(42)设于过滤组件 (2)与出水组件(3)之间。
  9. 根据权利要求1至8任一项所述的用于污水处理的在线除磷装置，其特征在于，所述出水组件(3)与管道泵(43)的进水端之间、进水组件(1)与过滤组件(2)的出水端之间连接有第二管道(9)；所述第二管道(9)上设有第二进水阀(91)和第二出水阀(92)，所述第二进水阀(91)设于出水组件(3)与管道泵(43)的进水端之间，所述第二出水阀(92)设于进水组件(1)与过滤组件(2)的出水端之间。
  10. 一种用于污水处理的在线除磷方法，其特征在于，包括以下步骤：
    S10.第一进水阀(41)、第一出水阀(42)开启，污水经进水组件(1)流入第一管道(4)中，加药组件(5)向第一管道(4)内投加混凝剂；
    S20.混凝剂与污水充分混合，污水中磷与混凝剂充分反应形成颗粒物；
    S30.含有颗粒物的污水进入过滤组件(2)中，过滤组件(2)截留污水中颗粒，清水流出过滤组件(2)至出水组件(3)流出；
    S40.当除磷工作时间达到设定周期T时，关闭第一进水阀(41)、第一出水阀(42)，开启第二进水阀(91)、第二出水阀(92)，互换进水组件(1)和出水组件(3)功能，反冲洗原进水组件(1)防止污堵。
PCT/CN2020/136837 2020-09-17 2020-12-16 一种用于污水处理的在线除磷装置及方法 WO2022057121A1 (zh)

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