WO2024016714A1 - 一种小型多阶折流a2/o高原生活污水处理装置和工艺 - Google Patents

一种小型多阶折流a2/o高原生活污水处理装置和工艺 Download PDF

Info

Publication number
WO2024016714A1
WO2024016714A1 PCT/CN2023/084214 CN2023084214W WO2024016714A1 WO 2024016714 A1 WO2024016714 A1 WO 2024016714A1 CN 2023084214 W CN2023084214 W CN 2023084214W WO 2024016714 A1 WO2024016714 A1 WO 2024016714A1
Authority
WO
WIPO (PCT)
Prior art keywords
zone
sludge
stage
water
anaerobic
Prior art date
Application number
PCT/CN2023/084214
Other languages
English (en)
French (fr)
Inventor
朱光灿
韩镇蓬
周大凯
李淑萍
陆勇泽
陈悦
Original Assignee
东南大学
西藏民族大学
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 东南大学, 西藏民族大学 filed Critical 东南大学
Publication of WO2024016714A1 publication Critical patent/WO2024016714A1/zh

Links

Classifications

    • 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
    • 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
    • C02F3/308—Biological phosphorus removal
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
    • C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/04—Flow arrangements
    • C02F2301/046—Recirculation with an external loop
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/10—Biological treatment of water, waste water, or sewage

Definitions

  • the invention relates to the technical field of biological sewage treatment, and in particular to a small multi-stage baffled A 2 /O plateau domestic sewage treatment device and process.
  • the invention provides a small multi-stage baffled A 2 /O plateau domestic sewage treatment device and process.
  • the purpose is to solve the problems of low pressure, low oxygen and low temperature natural environment characteristics in high altitude areas and the low carbon-nitrogen ratio of sewage water quality in sewage treatment.
  • the adverse effects enable it to achieve better nitrogen and phosphorus removal effects.
  • the technical solution of the present invention is a small multi-stage baffled A 2 /O plateau domestic sewage treatment device, which includes a treatment tank, a treatment device and a pipeline for connection.
  • the treatment tank includes an anaerobic zone 2, an anoxic zone 3, Aerobic zone 4 and sedimentation zone 5;
  • the anaerobic zone 2 and the anoxic zone 3 are both located on one side of the pool; the anaerobic zone 2 and the anoxic zone 3 are both equipped with guide plates in the middle to separate the anaerobic zone 2 and the anoxic zone 3 into 4- 6 reaction chambers connected in series; each reaction chamber has reserved openings connected along the direction of water flow;
  • Aerobic zone 4 and sedimentation zone 5 are located on the other side of the pool;
  • the treatment device includes a microporous aerator 8, an aerator 10, a gas lifting device A11 and a gas lifting device B12; a partition is set in the middle of the aerobic zone 4, and multiple microporous aerators 8 are installed in the aerobic zone 4.
  • the bottom of the pool; the aerator 10 is installed outside the pool, and the aerator 10 is connected to the microporous aerator 8, the air-lifting device A11 and the air-lifting device B12 through pipes and supplies air;
  • the pipeline includes water inlet pipe 1, sludge internal return pipe 6, sludge external return pipe 7 and drainage pipe; water inlet pipe 1 is located above the first reaction chamber of anaerobic zone 2; the first reaction chamber of anaerobic zone 2 There is an internal sludge return pipe 6 connected to the middle of the bottom of the anoxic zone 3; there is a sludge external return pipe 7 connected to the first reaction chamber of the anoxic zone 3 and the bottom of the sedimentation zone 5; the air stripping device A11 and the sludge internal return pipe 6 Connection; the gas stripping device B12 is connected to the sludge external return pipe 7; the upper right side of the aerobic zone 4 and the central water inlet pipe of the sedimentation zone 5 are connected through pipelines; the drainage pipe 9 is located above the side of the sedimentation zone 5.
  • the device adopts an intermittent short-cycle cycle operation mode, with a single operation cycle of 15-30 minutes.
  • the aeration reflux stage accounts for 35%-50% of the operation cycle time.
  • the water inflow is stopped during the aeration reflux stage and only flows during the sedimentation stage. Water, the water inlet time accounts for 75-100% of the precipitation stage time.
  • the present invention has the following beneficial technical effects:
  • the power required for aeration of the device and internal and external sludge return are provided by the aerator, which effectively reduces the energy consumption of sewage treatment and simplifies process operation control;
  • the multi-stage baffle structure in this device can effectively accumulate high sludge volume and effectively ensure the operating efficiency of the system in plateau low-temperature environments;
  • the process adopts short-cycle operation and intermittent water inflow mode, which can effectively suppress sludge expansion
  • the internal and external backflow coupling of sludge in the process can achieve denitrification and phosphorus removal, and reduce the carbon source demand and aeration demand of the system;
  • This process has a long sludge age and extremely low residual sludge output.
  • the remaining sludge can be discharged once every 1 to 3 months, which can effectively reduce sludge treatment costs.
  • Figure 1 is a schematic top view of a small multi-stage baffled A 2 /O plateau domestic sewage treatment device of the present invention
  • Figure 2 is a schematic AA cross-sectional view of a small multi-stage baffled A 2 /O plateau domestic sewage treatment device according to the present invention
  • Figure 3 is a schematic diagram of the operation cycle of a small multi-stage baffled A 2 /O plateau domestic sewage treatment device of the present invention.
  • Reference symbols 1. Water inlet pipe; 2. Anaerobic zone; 3. Anoxic zone; 4. Aerobic zone; 5. Sedimentation zone; 6. Internal sludge return pipe; 7. External sludge return pipe; 8. Microporous aerator; 9. Drainage pipe; 10. Aerator; 11. Gas lifting device A; 12. Gas lifting device B.
  • a small multi-stage baffle A 2 /O plateau domestic sewage treatment device includes a water inlet pipe 1, anaerobic zone 2, anoxic zone 3, aerobic zone 4, sedimentation zone 5, sludge Internal return pipe 6, sludge external return pipe 7, microporous aerator 8, drainage pipe 9, aerator 10, A gas lifting device 11, B gas lifting device 12.
  • the total volume of the device is 18.0m 3
  • the volume of anaerobic zone 2 is 3.0m 3
  • the volume of anoxic zone 3 is 4.5m 3
  • the volume of aerobic zone 4 is 7.8m 3
  • the volume of sedimentation zone 5 is 2.7m 3
  • anaerobic zone 2 and anoxic zone A guide plate is set up in the oxygen zone 3 to separate the anaerobic zone 2 and the anoxic zone 3 into 4 and 6 series reaction chambers of the same size respectively.
  • the reaction chamber volumes are all 0.75m 3 ; the bottom of the aerobic zone 4 is equipped with Microporous aerator 8, with a partition in the middle; the upper right side of the aerobic zone 4 is connected to the central water inlet pipe of the sedimentation zone 5 through pipelines; the water inlet pipe 1 is located above the first reaction chamber of the anaerobic zone 2; the drainage pipe 9 is located above the side of sedimentation zone 5; the first reaction chamber of anaerobic zone 2 is connected to the bottom of anoxic zone 3 with a sludge return pipe 6; the first reaction chamber of anoxic zone 3 is connected to the bottom of sedimentation zone 5.
  • the mud external return pipe 7; the aerator 10 is connected to the microporous aerator 8, the gas lifting device A11, and the gas lifting device B12 respectively.
  • the gas lifting device A11 is connected to the sludge internal return pipe 6, and the gas lifting device B12 is connected to the sludge internal return pipe 6.
  • the external return pipe 7 is connected; during operation, the aerator 10 can not only provide air for the microporous aerator 8, but also provide the sludge internal return pipe 6 and the sludge external return pipe 7 required for sludge airlift return. Air.
  • the device adopts an intermittent short-cycle cycle operation mode, with an operation cycle of 15-30 minutes.
  • the aeration reflux stage accounts for 35%-50% of the operation cycle time, and the water inflow is stopped during the aeration reflux stage. Water only enters during the sedimentation stage, and the water inlet time accounts for 75-100% of the sedimentation stage time.
  • Step 1 the aeration reflux stage, the process stops water inflow, the aerator 10 is started, and the aeration gas is distributed to the microporous aerator 8, the gas stripping device A11 and the gas stripping device B12. Aeration is carried out from the micropore aerator 8 to the aerobic zone 4.
  • the air-to-water ratio is 15-30; the air-lifting device A11 allows the sludge in the bottom of the anoxic zone 3 to be lifted up into the first reaction chamber of the anaerobic zone 2 through the sludge return pipe 6, and the sludge backflow ratio is 200-400%;
  • the air stripping device B12 allows the sludge at the bottom of the sedimentation zone 5 to be lifted up into the first reaction chamber of the anoxic zone 3 through the sludge external return pipe 7, and the sludge external return ratio is 200-600%.
  • Step 2 the sedimentation stage, the process begins to inflow water.
  • the sewage flows into the first reaction chamber of anaerobic zone 2 through water inlet pipe 1. It passes through anaerobic zone 2 and anoxic zone 3 in turn through horizontal deflection and up and down deflection due to gravity.
  • the reaction chamber reaches the aerobic zone 4, and the water flows obliquely upward from the middle partition of the aerobic zone 4, flows into the water inlet pipe located in the center of the sedimentation zone 5 through the upper pipe on the right side of the aerobic zone 4, and then passes through the central water inlet pipe of the sedimentation zone 5 It enters the pool from top to bottom, is evenly distributed in the pool through the umbrella-shaped baffle, and then slowly rises along the entire water cross section to separate the mud and water.
  • the water flows out through the drainage pipe 9 with a hydraulic retention time of 30-50 hours.
  • aerobic zone 4 mainly performs nitrification to degrade ammonia nitrogen and aerobic polyphosphorus; anaerobic zone 2 mainly realizes organic matter conversion and anaerobic phosphorus release, and also undertakes most of the denitrification function of the system; anoxic zone 3
  • the return sludge outside the precipitation zone 5 containing nitrate is mixed with the effluent from the anaerobic zone 2 containing phosphorus to achieve denitrification and phosphorus removal.
  • the sludge concentration in anaerobic zone 2 is 10000-20000mg MLSS/L; the sludge concentration in anoxic zone 3 is 5000-10000mg MLSS/L; the sludge concentration in aerobic zone 4 is 5000-8000mg MLSS/L; residual sewage is discharged once every 30 to 90 days mud.
  • the test water is the incoming water from a sewage treatment plant on the plateau. Its water quality characteristics are as follows: COD concentration is 233.5 ⁇ 15.3mg/L, NH 4+ -N concentration is 34.10 ⁇ 2.89mg/L, and TN concentration is 39.77 ⁇ 3.99mg/L.
  • the TP concentration is 2.72 ⁇ 0.38mg/L, and the inlet water temperature is 18-20°C.
  • the test site is located in Lhasa, Cambodia, with an altitude of about 3658m and an atmospheric pressure of about 65.2kPa.
  • the process runs for a single cycle of 24 minutes, including 11 minutes for the aeration and reflux stage, 13 minutes for the sedimentation stage, and 13 minutes for the aeration and reflux stage.
  • the water inflow is stopped during the air reflux stage, the water outage stage lasts for 12 minutes, and the water inflow stage lasts for 12 minutes.
  • the hydraulic retention time of the device is 36h, and the inlet water flow is 12m 3 /d, of which the anaerobic zone is 6.0h, the anoxic zone is 9.0h, the aerobic zone is 15.6h, and the sedimentation zone is 5.4h.
  • the air-to-water ratio of the aerobic tank is 20, the internal sludge return ratio is 250%, and the sludge external return ratio is 400%.
  • test operation results show that after the system operates stably, the effluent COD concentration is 16.5 ⁇ 10.8mg/L, the NH 4+ -N concentration is 0.53 ⁇ 0.24mg/L, the TN concentration is 4.12 ⁇ 0.87mg/L, and the TP concentration is 0.26 ⁇ 0.18mg/L, all indicators of the effluent have stably reached the Class A standard of the "Pollutant Discharge Standard for Urban Sewage Treatment Plants" (GB18918-2002).
  • the test water was the incoming water from a sewage treatment plant on the plateau.
  • the test period was the rainy season in the Lhasa area, and the incoming water fluctuated greatly.
  • Its water quality characteristics are as follows: COD concentration is 160.2 ⁇ 28.5mg/L, and NH 4+ -N concentration is 21.47 ⁇ 3.52mg. /L, the TN concentration is 27.38 ⁇ 2.64mg/L, the TP concentration is 2.53 ⁇ 0.47mg/L, the inlet water temperature is 16-20°C, the test site is located in Lhasa, Cambodia, with an altitude of about 3658m and an atmospheric pressure of about 65.2kPa.
  • the process runs for a single cycle of 20 minutes, including an aeration and reflux stage of 8 minutes and a sedimentation stage of 12 minutes.
  • the water inlet is stopped during the aeration and reflux stage, the water is stopped for 10 minutes, and the water inlet stage is 10 minutes.
  • the hydraulic retention time of the device is 48h, and the inlet water flow is 9.0m3/d, of which the anaerobic zone is 8.0h, the anoxic zone is 12.0h, the aerobic zone is 20.8h, and the sedimentation zone is 7.2h.
  • the air-to-water ratio of the aerobic pool is 20, the internal sludge return ratio is 350%, and the sludge external return ratio is 550%.
  • the test operation results show that after the system operates stably, the effluent COD concentration is 26.1 ⁇ 12.9mg/L, the NH 4+ -N concentration is 1.2 ⁇ 0.6mg/L, the TN concentration is 7.3 ⁇ 1.6mg/L, and the TP concentration is 0.9 ⁇ 0.2mg/L, the effluent COD, NH4+-N and TN stably reach the Class A standard of the "Pollutant Discharge Standard for Urban Sewage Treatment Plants" (GB18918-2002), and TP stably reaches the Class B standard

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Microbiology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)

Abstract

一种小型多阶折流A 2/O高原生活污水处理装置和工艺，包括依次连通的进水管道（1）、厌氧区（2）、缺氧区（3）、好氧区（4）、沉淀区（5）和排水管道（9），还包括污泥内、外回流管道（6、7）、微孔曝气器（8）、曝气机（10）、气提装置A（11）、气提装置B（12）；采用间歇短周期循环运行模式，分为曝气回流阶段和沉淀阶段，曝气回流阶段不进水，好氧区（4）发生硝化作用降解氨氮和好氧聚磷；沉淀阶段进水，进水通过重力作用水平折流和上下折流依次通过厌氧区（2）和缺氧区（3）到达好氧区（4），厌氧区（2）实现有机物转化、厌氧释磷和脱氮，缺氧区（3）实现反硝化除磷。该装置和工艺脱氮除磷效果好、处理能耗低、污泥产量低、工艺流程简单，更适用于高原生活污水的处理。

Description

一种小型多阶折流A2/O高原生活污水处理装置和工艺
本发明涉及污水生物处理技术领域，特别是涉及一种小型多阶折流A2/O高原生活污水处理装置和工艺。
背景技术
西藏作为青藏高原的重要核心区域，生态地位特殊而重要，生态责任重大而艰巨，肩负着全面筑牢国家生态安全根基、持续改善生态环境质量、推动高质量发展的重大任务。由于社会经济快速发展和区域持续开发，西藏地区面临的环境问题日益突出，污水处理作为环境治理中的一环，对生态环境保护起着至关重要的作用。
目前西藏地区镇村污水处理工作处于起步阶段，污水处理厂的设计和建设中通常参照内地经验，但在实际运行过程中，存在诸多问题：(1)西藏地区生活污水碳氮比(C/N)偏低，不能同时满足反硝化和生物除磷对碳源的需求，导致系统总氮和总磷去除效果不佳；(2)高原地区低压低氧的环境下，氧的传质速率下降，水中饱和溶解氧浓度也降低，不利于氧气从空气转移到水中，这时候往往需要增加曝气功率，导致污水处理能耗增加；(3)相比于东部平原地区，高原地区污水处理厂进水水温偏低，导致功能微生物活性降低，使得出水水质难以达标。此外，系统还面临污泥膨胀、生物量增长缓慢等问题；(4)西藏地区大部分镇村规模较小，污水处理设施规模小，许多工艺并不适用于小型污水处理设施，导致运行成本偏高，处理效果不佳。
因此针对高原自然环境特点、进水水质和处理需求，提出适用于高原环境且出水水质稳定达标的小型生活污水低碳处理装置和工艺十分必要。
发明内容
本发明提供的是一种小型多阶折流A2/O高原生活污水处理装置和工艺，目的是解决高海拔地区低压低氧、低温的自然环境特点和低碳氮比的污水水质对污水处理的不利影响，使其能够达到较好的脱氮除磷效果。
本发明的技术方案，一种小型多阶折流A2/O高原生活污水处理装置，包括处理池、处理装置和用于连接的管路，处理池包括厌氧区2、缺氧区3、好氧区4和沉淀区5；
厌氧区2和缺氧区3均位于池体的一侧；厌氧区2和缺氧区3的中部均设置导流板，将厌氧区2和缺氧区3分别均隔成4-6个串联的反应室；各反应室沿着水体流动的方向预留相连通的开口；
好氧区4和沉淀区5位于池体的另一侧；
处理装置包括微孔曝气器8、曝气机10、气提装置A11和气提装置B12；好氧区4的中部设置隔板，微孔曝气器8设置多个均安装在好氧区4的底部；曝气机10安装在池体外部，曝气机10通过管道与微孔曝气器8、气提装置A11和气提装置B12连接并供气；
管路包括进水管道1、污泥内回流管道6、污泥外回流管道7和排水管道；进水管道1位于厌氧区2第一个反应室上方；厌氧区2第一个反应室与缺氧区3底部中间连接有污泥内回流管道6；缺氧区3第一个反应室与沉淀区5底部连接有污泥外回流管道7；气提装置A11与污泥内回流管道6连接；气提装置B12与污泥外回流管道7连接；好氧区4右侧上方和沉淀区5的中心进水管通过管道连接；排水管道9位于沉淀区5侧上方。装置采用间歇短周期循环运行模式，运行单周期15-30min，在单周期内，曝气回流阶段时间占运行周期时间的35％-50％，曝气回流阶段停止进水，只在沉淀阶段进水，进水时间占沉淀阶段时间的75-100％。
与现有技术相比，本发明具有如下有益的技术效果：
1、将厌氧区、缺氧区、好氧区、沉淀区和污泥内、外回流组合，各单元功能分区明确，运行稳定可靠，适用于高原小型污水处理厂和农村分散式的污水处理，具有良好的脱氮除磷效果；
2.该装置曝气和污泥内外回流所需动力均由曝气机提供，有效降低了污水处理的能耗，简化了工艺运行控制；
3.该装置中的多阶折流结构可有效的积累高污泥量，有效保证系统在高原低温环境下的运行效能；
4.工艺采用短周期运行和间歇进水的模式，可有效抑制污泥膨胀；
5.工艺中污泥内外回流耦合，可以实现反硝化除磷，并降低系统的碳源需求和曝气需求；
6.该工艺污泥龄长，剩余污泥产量极低，1～3个月排一次剩余污泥，可有效降低污泥处理成本。
附图说明
图1为本发明一种小型多阶折流A2/O高原生活污水处理装置俯视示意图；
图2为本发明一种小型多阶折流A2/O高原生活污水处理装置A-A截面示意图；
图3为本发明一种小型多阶折流A2/O高原生活污水处理装置运行周期示意图。
附图标记：1、进水管道；2、厌氧区；3、缺氧区；4、好氧区；5、沉淀区；
6、污泥内回流管道；7、污泥外回流管道；8、微孔曝气器；9、排水管道；10、曝气机；11、气提装置A；12、气提装置B。
具体实施方式
如图1所示，一种小型多阶折流A2/O高原生活污水处理装置，包括进水管道1，厌氧区2，缺氧区3，好氧区4，沉淀区5，污泥内回流管道6，污泥外回流管道7，微孔曝气器8，排水管道9，曝气机10，A气提装置11，B气提装置12。
其中，装置总容积18.0m3，厌氧区2容积3.0m3，缺氧区3容积4.5m3，好氧区4容积7.8m3，沉淀区5容积2.7m3；厌氧区2和缺氧区3内设置导流板，将厌氧区2和缺氧区3分别隔成4个和6个大小一样的串联反应室，反应室容积均为0.75m3；好氧区4底部设有微孔曝气器8，中间设有隔板；好氧区4右侧上方与沉淀区5的中心进水管通过管道连接；进水管道1位于厌氧区2第一个反应室上方；排水管道9位于沉淀区5侧上方；厌氧区2第一个反应室与缺氧区3底部中间连接有污泥内回流管道6；缺氧区3第一个反应室与沉淀区5底部连接有污泥外回流管道7；曝气机10分别与微孔曝气器8、气提装置A11、气提装置B12连接，气提装置A11与污泥内回流管道6连接，气提装置B12与污泥外回流管道7连接；曝气机10在运行过程中，既可以为微孔曝气器8提供空气，也可以污泥内回流管道6和污泥外回流管道7提供污泥气提回流所需空气。
如图2所示，装置采用间歇短周期循环运行模式，运行周期15-30min，在单周期内，曝气回流阶段时间占运行周期时间的35％-50％，曝气回流阶段停止进水，只在沉淀阶段进水，进水时间占沉淀阶段时间的75-100％。
基于上述装置，一种小型多阶折流A2/O高原生活污水处理工艺，其具体步骤和原理如下：
步骤一，曝气回流阶段，工艺停止进水，曝气机10启动，曝气气体分配给微孔曝气器8、气提装置A11和气提装置B12。由微孔曝气器8向好氧区4曝气， 气水比15-30；气提装置A11使得缺氧区3底部中间污泥通过污泥内回流管道6气提到厌氧区2第一个反应室，污泥内回流比200-400％；气提装置B12使得沉淀区5底部污泥通过污泥外回流管道7气提到缺氧区3第一个反应室，污泥外回流比200-600％。
步骤二，沉淀阶段，工艺开始进水，污水通过进水管道1流入厌氧区2第一个反应室，通过重力作用水平折流和上下折流依次通过厌氧区2和缺氧区3各反应室到达好氧区4，水流从好氧区4中间隔板斜向上流动，经好氧区4右侧上方管道流入设在沉淀区5中心的进水管，再通过沉淀区5的中心进水管自上而下进入池内，经伞形挡板在池中均匀分布后沿整个过水断面缓慢上升实现泥水分离，出水经排水管道9流出，水力停留时间30-50h。
步骤一、步骤二中，好氧区4主要硝化作用降解氨氮和好氧聚磷；厌氧区2主要实现有机物转化和厌氧释磷，同时承担系统的大部分脱氮功能；缺氧区3中，含有硝酸盐的沉淀区5外回流污泥与含有磷的厌氧区2出水混合，实现反硝化除磷。
厌氧区2污泥浓度10000-20000mg MLSS/L；缺氧区3污泥浓度5000-10000mg MLSS/L；好氧区4污泥浓度5000-8000mg MLSS/L；30～90天排一次剩余污泥。
实施例1：
试验用水为高原某污水处理厂进水，其水质特点如下：COD浓度为233.5±15.3mg/L，NH4+-N浓度为34.10±2.89mg/L，TN浓度为39.77±3.99mg/L，TP浓度为2.72±0.38mg/L，进水水温18-20℃，试验场地位于西藏拉萨市，海拔高约3658m，大气压力约65.2kPa。
工艺运行单周期24min，其中曝气回流阶段11min，沉淀阶段13min，曝 气回流阶段停止进水，停水阶段12min，进水阶段12min。装置水力停留时间36h，进水流量12m3/d，其中，厌氧区6.0h，缺氧区9.0h，好氧区15.6h，沉淀区5.4h。好氧池气水比20，污泥内回流比250％，污泥外回流比400％。
试验运行结果表明：在系统稳定运行后，出水COD浓度为16.5±10.8mg/L，NH4+-N浓度为0.53±0.24mg/L，TN浓度为4.12±0.87mg/L，TP浓度为0.26±0.18mg/L，出水各项指标稳定达到《城镇污水处理厂污染物排放标准》(GB18918-2002)一级A标准。
实施例2
试验用水为高原某污水处理厂进水，试验期间为拉萨地区雨季，进水波动较大，其水质特点如下：COD浓度为160.2±28.5mg/L，NH4+-N浓度为21.47±3.52mg/L，TN浓度为27.38±2.64mg/L，TP浓度为2.53±0.47mg/L，进水水温16-20℃，试验场地位于西藏拉萨市，海拔高约3658m，大气压力约65.2kPa。
工艺运行单周期20min，其中曝气回流阶段8min，沉淀阶段12min，曝气回流阶段停止进水，停水阶段10min，进水阶段10min。装置水力停留时间48h，进水流量9.0m3/d，其中，厌氧区8.0h，缺氧区12.0h，好氧区20.8h，沉淀区7.2h。好氧池气水比20，污泥内回流比350％，污泥外回流比550％。
试验运行结果表明：在系统稳定运行后，出水COD浓度为26.1±12.9mg/L，NH4+-N浓度为1.2±0.6mg/L，TN浓度为7.3±1.6mg/L，TP浓度为0.9±0.2mg/L，出水COD、NH4+-N和TN稳定达到《城镇污水处理厂污染物排放标准》(GB18918-2002)一级A标准，TP稳定达到一级B标准
上面结合附图对本发明的实施方式作了详细说明，但是本发明并不限于此，在所属技术领域的技术人员所具备的知识范围内，在不脱离本发明宗旨的前提下还可以作出各种变化。

Claims (6)

  1. 一种小型多阶折流A2/O高原生活污水处理装置，包括处理池、处理装置和用于连接的管路，其特征在于，处理池包括厌氧区(2)、缺氧区(3)、好氧区(4)和沉淀区(5)；
    厌氧区(2)和缺氧区(3)均位于池体的一侧；厌氧区(2)和缺氧区(3)的中部均设置导流板，将厌氧区(2)和缺氧区(3)分别均隔成4-6个串联的反应室；各反应室沿着水体流动的方向预留相连通的开口；
    好氧区(4)和沉淀区(5)位于池体的另一侧；
    处理装置包括微孔曝气器(8)、曝气机(10)、气提装置A(11)和气提装置B(12)；好氧区(4)的中部设置隔板，微孔曝气器(8)设置多个均安装在好氧区(4)的底部；曝气机(10)安装在池体外部，曝气机(10)通过管道与微孔曝气器(8)、气提装置A(11)和气提装置B(12)连接并供气；
    管路包括进水管道(1)、污泥内回流管道(6)、污泥外回流管道(7)和排水管道；进水管道(1)位于厌氧区(2)第一个反应室上方；厌氧区(2)第一个反应室与缺氧区(3)底部中间连接有污泥内回流管道(6)；缺氧区(3)第一个反应室与沉淀区(5)底部连接有污泥外回流管道(7)；气提装置A(11)与污泥内回流管道(6)连接；气提装置B(12)与污泥外回流管道(7)连接；好氧区(4)右侧上方和沉淀区(5)的中心进水管通过管道连接；排水管道(9)位于沉淀区(5)侧上方。
  2. 根据权利要求1所述的一种小型多阶折流A2/O高原生活污水处理装置，其特征在于，装置采用间歇短周期循环运行模式，运行单周期15-30min，在单周期内，曝气回流阶段时间占运行周期时间的35％-50％，曝气回流阶段停止进水，只在沉淀阶段进水，进水时间占沉淀阶段时间的75-100％。
  3. 根据权利要求1所述的一种小型多阶折流A2/O高原生活污水处理装置，其特征在于，曝气机(10)在运行过程中，为微孔曝气器(8)提供空气，同时为污泥内回流管道(6)和污泥外回流管道(7)提供污泥气提回流所需空气。
  4. 一种小型多阶折流A2/O高原生活污水处理工艺应用于如权利要求1-3所述的装置，其特征在于，包括以下具体步骤：
    S1、曝气回流阶段；工艺停止进水，曝气机(10)启动，曝气气体分配给微孔曝气器(8)、气提装置A(11)和气提装置B(12)；由微孔曝气器(8)向好氧区(4)曝气；气提装置A(11)将缺氧区(3)底部中间污泥通过污泥内回流管道(6)气提到厌氧区(2)第一个反应室；气提装置B(12)将沉淀区(5)底部污泥通过污泥外回流管道(7)气提到缺氧区(3)第一个反应室；
    S2、沉淀阶段；工艺开始进水，污水通过进水管道(1)流入厌氧区(2)第一个反应室，通过重力作用水平折流和上下折流依次通过厌氧区(2)和缺氧区(3)各反应室到达好氧区(4)，水流从好氧区(4)中间隔板底部斜向上流动，经好氧区(4)右侧上方管道流入设在沉淀区(5)中心的进水管，再通过沉淀区(5)的中心进水管自上而下进入池内，经伞形挡板在池中均匀分布后沿整个过水断面缓慢上升实现泥水分离，出水经排水管道(9)流出。
  5. 根据权利要求4所述的一种小型多阶折流A2/O高原生活污水处理工艺，其特征在于，S1中曝气阶段气水比为15-30，污泥内回流比200-400％，污泥外回流比200-600％；S2中，总水力停留时间30-50h。
  6. 根据权利要求4所述的小型多阶折流A2/O高原生活污水处理工艺，其特征在于，厌氧区(2)污泥浓度10000-20000mg MLSS/L；缺氧区(3)污泥浓度5000-10000mg MLSS/L；好氧区(4)污泥浓度5000-8000mg MLSS/L；30～90天排一次剩余污泥。
PCT/CN2023/084214 2022-07-19 2023-03-28 一种小型多阶折流a2/o高原生活污水处理装置和工艺 WO2024016714A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202210850638.9 2022-07-19
CN202210850638.9A CN115286105B (zh) 2022-07-19 2022-07-19 一种小型多阶折流a2/o高原生活污水处理装置和工艺

Publications (1)

Publication Number Publication Date
WO2024016714A1 true WO2024016714A1 (zh) 2024-01-25

Family

ID=83824229

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/084214 WO2024016714A1 (zh) 2022-07-19 2023-03-28 一种小型多阶折流a2/o高原生活污水处理装置和工艺

Country Status (2)

Country Link
CN (1) CN115286105B (zh)
WO (1) WO2024016714A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115286105B (zh) * 2022-07-19 2024-04-26 东南大学 一种小型多阶折流a2/o高原生活污水处理装置和工艺

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007136298A (ja) * 2005-11-16 2007-06-07 Nippon Steel Corp 下水からの窒素及びりんの除去方法、並びに除去装置
CN103880181A (zh) * 2014-03-10 2014-06-25 北京工业大学 一种连续流短程硝化反硝化除磷的改良a2/o工艺
CN103936152A (zh) * 2014-04-12 2014-07-23 北京工业大学 一种城市污水处理厂iceas工艺升级改造高效脱氮的方法
CN205222815U (zh) * 2015-12-18 2016-05-11 北京桑德环境工程有限公司 一种一体化污水处理设备
CN208562087U (zh) * 2018-07-27 2019-03-01 湖南大辰环保科技有限公司 一体化生活污水生化处理设备
CN211367130U (zh) * 2019-07-15 2020-08-28 中节能六合天融环保科技有限公司 一种多点均衡分散式回流污水处理装置
CN212894341U (zh) * 2020-06-19 2021-04-06 工大环境股份有限公司 一种hit污水处理集装箱模块反应器
CN113582432A (zh) * 2021-03-29 2021-11-02 北京中斯水灵水处理技术有限公司 污水处理系统和污水处理方法
CN114455708A (zh) * 2022-04-08 2022-05-10 湖南惟创环境科技有限公司 一体化污水处理设备及污水处理方法
CN115286105A (zh) * 2022-07-19 2022-11-04 东南大学 一种小型多阶折流a2/o高原生活污水处理装置和工艺

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109179661A (zh) * 2018-11-22 2019-01-11 哈尔滨工业大学环境股份有限公司 一种分布式mbbr污水处理集装箱模块反应器
CN112047475A (zh) * 2020-09-29 2020-12-08 北京中斯水灵水处理技术有限公司 方形一体化垂直流迷宫结构及污水处理装置、系统、方法
CN215208707U (zh) * 2020-11-27 2021-12-17 湖北君集水处理有限公司 一种muasb改良muct处理高浓度有机废水的装置
CN112777872A (zh) * 2021-01-19 2021-05-11 湖南首辅环境科技有限公司 一种处理高氨氮低碳氮比的养殖废水的工艺

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007136298A (ja) * 2005-11-16 2007-06-07 Nippon Steel Corp 下水からの窒素及びりんの除去方法、並びに除去装置
CN103880181A (zh) * 2014-03-10 2014-06-25 北京工业大学 一种连续流短程硝化反硝化除磷的改良a2/o工艺
CN103936152A (zh) * 2014-04-12 2014-07-23 北京工业大学 一种城市污水处理厂iceas工艺升级改造高效脱氮的方法
CN205222815U (zh) * 2015-12-18 2016-05-11 北京桑德环境工程有限公司 一种一体化污水处理设备
CN208562087U (zh) * 2018-07-27 2019-03-01 湖南大辰环保科技有限公司 一体化生活污水生化处理设备
CN211367130U (zh) * 2019-07-15 2020-08-28 中节能六合天融环保科技有限公司 一种多点均衡分散式回流污水处理装置
CN212894341U (zh) * 2020-06-19 2021-04-06 工大环境股份有限公司 一种hit污水处理集装箱模块反应器
CN113582432A (zh) * 2021-03-29 2021-11-02 北京中斯水灵水处理技术有限公司 污水处理系统和污水处理方法
CN114455708A (zh) * 2022-04-08 2022-05-10 湖南惟创环境科技有限公司 一体化污水处理设备及污水处理方法
CN115286105A (zh) * 2022-07-19 2022-11-04 东南大学 一种小型多阶折流a2/o高原生活污水处理装置和工艺

Also Published As

Publication number Publication date
CN115286105B (zh) 2024-04-26
CN115286105A (zh) 2022-11-04

Similar Documents

Publication Publication Date Title
CN107265645B (zh) 连续流a/o除磷串联多级a/o自养脱氮工艺处理低碳源城市污水的装置和方法
CN102557356B (zh) 半短程硝化/厌氧氨氧化城市污水脱氮除磷工艺和方法
CN102964035B (zh) 复合式生物膜自养脱氮装置的运行方法
CN107902758B (zh) 一种用于城市生活污水多级a/o组合脱氮除磷的一体化设备
WO2021104541A1 (zh) 一种一体化污水处理装置和方法
CN104058555A (zh) 基于厌氧氨氧化的低碳氮比城市污水脱氮系统及处理工艺
CN210122541U (zh) 基于微纳米气泡技术的智能化污水深度处理系统
CN209740813U (zh) 基于a2/o工艺的厌氧—好氧内循环污泥原位减量系统
WO2024016714A1 (zh) 一种小型多阶折流a2/o高原生活污水处理装置和工艺
CN103332788B (zh) 一种农村生活污水的多级厌氧-好氧组合脱氮除磷装置及方法
CN111138038A (zh) 光伏驱动农村生活污水一体化处理系统和处理方法
CN201220925Y (zh) 一种脉冲曝气式膜生物反应器装置
CN112225397A (zh) 基于双污泥反硝化除磷及生物滤塔的污水处理系统及方法
CN109851161B (zh) 生产联苯二氯苄及邻磺酸钠苯甲醛所产污水的处理方法
CN114262058A (zh) 一种双循环双沉淀池一体化生物处理装置及方法
CN203238141U (zh) 一种污水生物处理膜过滤系统
CN111559837A (zh) 一种垃圾渗滤液生化处理系统及工艺
CN115259377A (zh) 一种垃圾渗滤液处理系统和方法
CN106186325A (zh) 一种同步硝化反硝化生活污水处理方法
CN110980950A (zh) 一种竖向流多级a/o污水处理装置及其污水处理方法
CN205328825U (zh) 处理污水并实现再生用水的aooc组合设备
CN213738774U (zh) 一种基于碳源补充剂的高效脱氮污水处理系统
CN113620426B (zh) 多级缺氧-好氧污水处理设备及方法
CN110713254B (zh) 一种具有强化脱氮除磷功能的后置厌氧自动混合污水处理装置
CN217780965U (zh) 一种微动力a2o一体化城镇及农村生活污水处理装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23841788

Country of ref document: EP

Kind code of ref document: A1