CN104030524B - Seasonal aeration domestic sewage deep denitrification process and device - Google Patents
Seasonal aeration domestic sewage deep denitrification process and device Download PDFInfo
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- 238000005273 aeration Methods 0.000 title claims abstract description 67
- 239000010865 sewage Substances 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 30
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 108
- 230000020477 pH reduction Effects 0.000 claims abstract description 25
- 230000003442 weekly effect Effects 0.000 claims abstract description 15
- 239000000945 filler Substances 0.000 claims description 23
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 8
- 230000014759 maintenance of location Effects 0.000 claims description 6
- 238000005276 aerator Methods 0.000 claims description 5
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- 230000000694 effects Effects 0.000 abstract description 12
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 6
- 239000003344 environmental pollutant Substances 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 231100000719 pollutant Toxicity 0.000 abstract description 4
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- 241000196324 Embryophyta Species 0.000 description 8
- 239000002245 particle Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
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- 239000011574 phosphorus Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 241000538878 Calamus calamus Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
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Abstract
本发明涉及一种季节性曝气生活污水深度脱氮工艺及装置。由厌氧酸化池、曝气垂直潜流湿地、无曝气垂直潜流湿地和水平潜流湿地组成。生活污水进入厌氧酸化池；厌氧池出水经分流后分别进入曝气垂直潜流湿地和无曝气垂直潜流湿地；曝气垂直潜流湿地和无曝气垂直潜流湿地的出水混合后进入水平潜流人工湿地。水平潜流湿地出水可用作补充静止景观水体等用途。本发明设置分流阀、曝气和无曝气垂直流湿地，成功解决了NH4 +-N与NO3 --N比例控制问题，降低了处理系统的监测与管理难度，本发明维护方便，周平均温度高于或等于15℃时垂直流湿地连续曝气，系统TN去除率可达95%以上，污染物去除效果稳定，出水水质可达地表水Ⅳ类标准；周平均温度低于15℃时，垂直流湿地曝气停止，系统出水水质亦可达到污水厂出水一级B标准。
The invention relates to a deep denitrification process and device for seasonal aerated domestic sewage. It consists of anaerobic acidification pond, aerated vertical subsurface wetland, non-aerated vertical subsurface wetland and horizontal subsurface wetland. The domestic sewage enters the anaerobic acidification tank; the effluent from the anaerobic tank enters the aerated vertical underflow wetland and the non-aeration vertical underflow wetland respectively after diversion; wetlands. The effluent from horizontal subsurface flow wetlands can be used to supplement static landscape water bodies and other purposes. The invention sets diverter valves, aeration and non-aeration vertical flow wetlands, successfully solves the problem of NH 4 + -N and NO 3 - -N ratio control, reduces the difficulty of monitoring and management of the treatment system, and the invention is easy to maintain and cycle When the average temperature is higher than or equal to 15°C, the vertical flow wetland is continuously aerated, the TN removal rate of the system can reach more than 95%, the pollutant removal effect is stable, and the effluent water quality can reach the surface water class IV standard; when the weekly average temperature is lower than 15°C , the aeration of the vertical flow wetland is stopped, and the water quality of the system effluent can also meet the first-class B standard of the sewage plant effluent.
Description
技术领域 technical field
本发明属于水处理领域，具体涉及一种季节性曝气生活污水深度脱氮工艺和装置。 The invention belongs to the field of water treatment, and in particular relates to a deep denitrification process and device for seasonally aerated domestic sewage.
背景技术 Background technique
人工湿地(Constructed Wetlands，CWs)是一种由填料、植物和微生物共同组成的污水处理系统。系统中的污染物经由过滤、吸附、植物吸收、微生物的同化降解等物理、化学、生物作用去除。因其运行投资费用低，管理维护方便，对氮、磷等植物营养元素去除效果好，目前被广泛应用于二级处理水的深度脱氮除磷及分散生活污水处理。 Constructed Wetlands (CWs) is a sewage treatment system composed of fillers, plants and microorganisms. Pollutants in the system are removed through physical, chemical, and biological processes such as filtration, adsorption, plant absorption, and microbial assimilation and degradation. Because of its low operating investment cost, convenient management and maintenance, and good removal effect on plant nutrients such as nitrogen and phosphorus, it is currently widely used in the deep denitrification and phosphorus removal of secondary treated water and decentralized domestic sewage treatment.
有机氮和氨氮为生活污水中总氮的主要组成部分，有机氮经消化后变为氨氮。利用湿地进行分散生活污水处理时，氨氮的硝化需要消耗大量的氧气，单纯利用自然复氧实现氨氮的硝化，处理负荷太低，需要采用预曝气强化措施。曝气作为一种常用的污水处理方法，可以用以去除污水中的有害气体及挥发性物质，增加水中溶解氧，促进好氧微生物生长富集，提高还原性有机物的降解速率。 Organic nitrogen and ammonia nitrogen are the main components of total nitrogen in domestic sewage, and organic nitrogen becomes ammonia nitrogen after digestion. When wetlands are used for decentralized domestic sewage treatment, the nitrification of ammonia nitrogen needs to consume a large amount of oxygen. Simply using natural reoxygenation to achieve nitrification of ammonia nitrogen, the treatment load is too low, and pre-aeration measures are required. As a common sewage treatment method, aeration can be used to remove harmful gases and volatile substances in sewage, increase dissolved oxygen in water, promote the growth and enrichment of aerobic microorganisms, and increase the degradation rate of reducing organic matter.
已公开的发明专利文件（CN 102260021 A），针对湿地脱氮过程中碳源不足的问题，提出了一种无需外加碳源的生活污水深度脱氮工艺方法，通过NH4 +-N电极监测，控制合适的NH4 +-N与NO3 --N的比例，成功实现了厌氧氨氧化过程在人工湿地中的应用。但低温条件下，垂直流湿地中曝气氧化氨氮的负荷极低，费用效益比低。且厌氧氨氧化菌为中温菌，温度的降低会直接影响其活性及处理效率。另外，居民生活用水量季节性较明显，并与温度有一定的相关性，冬季的生活用水量要明显少于夏季，生活污水排放量季节性波动大。因此，采用单一的运行方式会影响处理系统的运行效果，造成资源的浪费。另外，利用NH4 +-N电极监测控制预处理系统出水中NH4 +-N与NO3 --N的比例，也在一定程度上增加了运行管理难度。 The published invention patent document (CN 102260021 A), aimed at the problem of insufficient carbon source in the wetland denitrification process, proposed a deep denitrification process method for domestic sewage without additional carbon source, monitored by NH 4 + -N electrodes, By controlling the appropriate ratio of NH 4 + -N to NO 3 - -N, the application of anaerobic ammonium oxidation process in constructed wetlands has been successfully realized. However, under low temperature conditions, the load of aerating ammonia nitrogen in vertical flow wetlands is extremely low, and the cost-benefit ratio is low. Moreover, anammox bacteria are mesophilic bacteria, and the decrease in temperature will directly affect their activity and treatment efficiency. In addition, the seasonality of domestic water consumption of residents is obvious and has a certain correlation with temperature. The domestic water consumption in winter is significantly less than that in summer, and the discharge of domestic sewage fluctuates greatly in seasonality. Therefore, adopting a single operation mode will affect the operation effect of the processing system, resulting in waste of resources. In addition, the use of NH 4 + -N electrodes to monitor and control the ratio of NH 4 + -N to NO 3 - -N in the effluent water of the pretreatment system also increases the difficulty of operation and management to a certain extent.
本发明针对上述问题，创新性地提出季节性曝气的方法，在有效减少能耗的同时，保证系统在低温条件下的处理效果。本发明亦同时提出了一种污水分流的方法，成功解决了NH4 +-N与NO3 --N的比例控制的问题，无需NH4 +-N电极监测，降低了处理系统的监测与管理难度，大大增加了技术的实用性。 Aiming at the above problems, the present invention innovatively proposes a seasonal aeration method, which ensures the treatment effect of the system under low temperature conditions while effectively reducing energy consumption. The present invention also proposes a sewage diversion method, which successfully solves the problem of ratio control of NH 4 + -N and NO 3 - -N, without NH 4 + -N electrode monitoring, reducing the monitoring and management of the treatment system Difficulty, greatly increasing the practicality of the technology.
发明内容 Contents of the invention
本发明的目的在于提供一种季节性曝气生活污水深度脱氮工艺方法和装置。 The purpose of the present invention is to provide a seasonal aeration domestic sewage deep denitrification process method and device.
本发明提出的季节性曝气生活污水深度脱氮工艺，具体步骤如下： The seasonal aeration domestic sewage deep denitrification process proposed by the present invention, the specific steps are as follows:
(1)原生生活污水经厌氧酸化池处理后，由厌氧酸化池出水口通过分流阀分流后，由第一出水口和第二出水口分别流入曝气垂直流人工湿地和无曝气垂直流人工湿地，水流自上而下流过湿地填料； (1) After the primary domestic sewage is treated by the anaerobic acidification tank, the outlet of the anaerobic acidification tank is diverted through the diverter valve, and then flows into the aerated vertical flow constructed wetland and the non-aeration vertical flow respectively from the first water outlet and the second water outlet. Constructed wetland, the water flows through the wetland filling from top to bottom;
(2)曝气垂直潜流人工湿地采取季节性曝气的运行方式： (2) Aeration The vertical underflow constructed wetland adopts the operation mode of seasonal aeration:
当周平均温度高于12 – 15℃时，控制曝气垂直流人工湿地进水和无曝气垂直流人工湿地进水体积比为1:1，曝气垂直潜流人工湿地进行充分曝气，使污水中的NH4 +-N得以完全硝化为NO3 —N，控制垂直潜流湿地容积负荷为0.09-0.16 kgNH4 +-N/ m3·d，曝气氨氮负荷为1.0-2.5g NH4 +-N/ m3空气； When the weekly average temperature is higher than 12-15°C, control the water volume ratio of the aerated vertical flow constructed wetland to that of the non-aerated vertical flow constructed wetland to 1:1, and the aerated vertical subsurface flow constructed wetland is fully aerated, so that The NH 4 + -N in the sewage can be completely nitrified into NO 3 — N, the volume load of the vertical subsurface flow wetland is controlled to be 0.09-0.16 kgNH 4 + -N/ m 3 ·d, and the aeration ammonia nitrogen load is 1.0-2.5g NH 4 + - N/ m3 air;
周平均温度低于12 - 15℃时，调节分流阀，控制曝气垂直流人工湿地进水和无曝气垂直流人工湿地进水体积比为1:3，关闭曝气垂直潜流人工湿地中的曝气装置，适当增加水力停留时间，控制垂直潜流湿地容积负荷为0.03-0.06 kgNH4 +-N/ m3·d； When the weekly average temperature is lower than 12-15°C, adjust the diverter valve, control the volume ratio of the water inflow to the aerated vertical flow constructed wetland and the water inflow to the non-aeration vertical flow constructed wetland to 1:3, and close the water in the aerated vertical underflow constructed wetland. Aeration device, appropriately increase the hydraulic retention time, and control the volume load of the vertical subsurface flow wetland to 0.03-0.06 kgNH 4 + -N/ m 3 ·d;
(3)步骤(1)中第二出水口的出水进入无曝气垂直潜流人工湿地，进一步去除污水中残留的SS，并去除多余生物可降解有机物，为后续自养微生物提供有利进水条件，控制其容积负荷为0.03-0.06 kgNH4 +-N/ m3·d； (3) The water from the second water outlet in step (1) enters the non-aerated vertical subsurface flow artificial wetland to further remove the residual SS in the sewage and remove excess biodegradable organic matter to provide favorable water inflow conditions for subsequent autotrophic microorganisms, Control its volume load to 0.03-0.06 kgNH 4 + -N/ m 3 ·d;
(4)将步骤(2)和步骤(3)中的出水经混合后，进入水平潜流湿地，为厌氧氨氧化过程提供良好的缺氧/厌氧环境与NH4 +-N与NO3 —N比例，经混合后的进水实际NH4 +-N与NO3 --N的比例为1:1-1.4:1，BOD5与N比例为0.2：1-0.5：1；水平潜流湿地容积负荷为0.004-0.011kgNH4 +-N/ m3·d； (4) Mix the effluent from step (2) and step (3) and enter the horizontal subsurface flow wetland to provide a good anoxic/anaerobic environment and NH 4 + -N and NO 3 — N ratio, the actual ratio of NH 4 + -N to NO 3 - -N in the mixed influent is 1:1-1.4:1, and the ratio of BOD 5 to N is 0.2:1-0.5:1; horizontal subsurface flow wetland volume The load is 0.004-0.011kgNH 4 + -N/ m 3 ·d;
(5)步骤(4)出水，可用作市政杂用水或直接排入附近天然或景观水体。 (5) The water produced in step (4) can be used as municipal miscellaneous water or directly discharged into nearby natural or landscape water bodies.
本发明中，步骤(1)中所述原生生活污水进入厌氧酸化池进行预处理，调节污水水质及水量，控制水力停留时间为5-6小时，厌氧酸化池容积负荷为0.65-1.74kgCOD/m3·d，以去除污水中固体悬浮物，降解部分有机物，显著提高NH4 +-N/TN的比例。 In the present invention, the primary domestic sewage described in step (1) enters the anaerobic acidification tank for pretreatment, adjusts the sewage water quality and water quantity, controls the hydraulic retention time to be 5-6 hours, and the volume load of the anaerobic acidification tank is 0.65-1.74kgCOD /m 3 ·d to remove suspended solids in sewage, degrade some organic matter, and significantly increase the ratio of NH 4 + -N/TN.
本发明提出一种季节性曝气生活污水深度脱氮装置，由厌氧酸化池23、分流阀7、曝气垂直潜流人工湿地24、无曝气垂直流人工湿地25、水平潜流人工湿地26依次经管道和阀门连接组成，其中： The present invention proposes a deep denitrification device for seasonal aerated domestic sewage, which consists of anaerobic acidification tank 23, diverter valve 7, aerated vertical underflow artificial wetland 24, non-aeration vertical flow artificial wetland 25, and horizontal underflow artificial wetland 26 in sequence It is composed of pipes and valves, among which:
厌氧酸化池23出水口设有分流阀7，分流阀7设有两个出水口，所述分流阀的两个出水口分别连接曝气垂直流湿地24和无曝气垂直流湿地25的上部一侧进水口；曝气垂直流湿地24和无曝气垂直流湿地25内均设有穿孔布水管，曝气垂直流湿地24底部设有曝气管，所述曝气管通过空气阀门9、空气流量计10和管道连接曝气机8；曝气垂直流湿地24和无曝气垂直流湿地25的出水口分别通过上弯出水管连接水平潜流湿地26上部进水口； The water outlet of the anaerobic acidification tank 23 is provided with a diverter valve 7, and the diverter valve 7 is provided with two water outlets. The two outlets of the diverter valve are respectively connected to the upper part of the aerated vertical flow wetland 24 and the non-aerated vertical flow wetland 25. Water inlet on one side; the aeration vertical flow wetland 24 and the non-aeration vertical flow wetland 25 are equipped with perforated water distribution pipes, and the bottom of the aeration vertical flow wetland 24 is provided with an aeration pipe, and the aeration pipe passes through the air valve 9, The air flow meter 10 and the pipeline are connected to the aerator 8; the water outlets of the aerated vertical flow wetland 24 and the non-aeration vertical flow wetland 25 are respectively connected to the upper water inlet of the horizontal submerged flow wetland 26 through an upwardly curved outlet pipe;
所述曝气垂直流湿地24和无曝气垂直流湿地25内设有第一湿地填料； The aeration vertical flow wetland 24 and the non-aeration vertical flow wetland 25 are provided with first wetland filler;
所述水平潜流湿地26内设有第二湿地填料20，第二湿地填料20两侧设有布水区填料，第二湿地填料与布水区填料连接处设有穿孔布水板。 The horizontal subsurface flow wetland 26 is provided with a second wetland filler 20, water distribution area fillers are arranged on both sides of the second wetland filler 20, and a perforated water distribution plate is provided at the connection between the second wetland filler and the water distribution area filler.
本发明中，所述厌氧酸化池23内设有3个折流板；其底部设有第一放空管2和第二放空管6。 In the present invention, the anaerobic acidification tank 23 is provided with three baffles; the bottom of which is provided with a first vent pipe 2 and a second vent pipe 6 .
曝气垂直流人工湿地24、无曝气垂直流人工湿地25和水平潜流人工湿地26中均种植适合亚热带气候的观赏性植物菖蒲19。 The aerated vertical flow constructed wetland 24 , the non-aerated vertical flow constructed wetland 25 and the horizontal subsurface flow constructed wetland 26 are all planted with calamus calamus 19 , an ornamental plant suitable for subtropical climate.
本发明的有益效果在于： The beneficial effects of the present invention are:
1. 对已公开“一种无需外加碳源的生活污水深度脱氮工艺方法及装置”进行了改良。通过设置分流阀、曝气和无曝气垂直流湿地，成功解决了水平潜流湿地进水NH4 +-N与NO3 --N的比例控制的问题，无需NH4 +-N电极监测，降低了处理系统的运行管理难度，增加了技术的实用性。 1. Improvements have been made to the published "A Process Method and Device for Advanced Denitrification of Domestic Sewage Without Additional Carbon Source". By setting diverter valves, aeration and non-aeration vertical flow wetlands, the problem of ratio control of NH 4 + -N and NO 3 - -N in horizontal subsurface flow wetlands has been successfully solved, without NH 4 + -N electrode monitoring, reducing It reduces the difficulty of operation and management of the processing system and increases the practicality of the technology.
2. 针对低温条件下，垂直流湿地中的曝气氨氮负荷极低，费用效益比低，且厌氧氨氧化作用受到低温的抑制、水平潜流湿地系统内出现的冬季NO3 _N积累的情况，创新性地提出季节性曝气的运行方式，在有效减少冬季曝气能耗的同时，与分散生活污水用水量随温度下降而降低的特性配合，可保证系统在低温条件下仍能达到较好的处理效果。 2. Under low temperature conditions, the aerated ammonia nitrogen load in the vertical flow wetland is extremely low, the cost-benefit ratio is low, and the anaerobic ammonium oxidation is inhibited by low temperature, and the accumulation of NO 3 _ N in the horizontal subsurface flow wetland system in winter , innovatively put forward the operation mode of seasonal aeration, which can effectively reduce the energy consumption of aeration in winter, and cooperate with the characteristic that the water consumption of dispersed domestic sewage decreases with the decrease of temperature, so as to ensure that the system can still achieve a relatively high temperature under low temperature conditions. Good processing effect.
3. 本工艺系统结构进一步简化，运行管理更为简便。周平均温度高于或等于15℃时，系统运行稳定，污染物去除效果好，出水水质可达地表水Ⅳ类标准。周平均温度低于15℃时，采用无曝气运行模式。湿地中高度富集的自养菌仍可有效去除水中污染物，出水水质可达一级B标准。 3. The structure of the process system is further simplified, and the operation and management are more convenient. When the weekly average temperature is higher than or equal to 15°C, the system operates stably, the pollutant removal effect is good, and the effluent water quality can reach the surface water class IV standard. When the weekly average temperature is lower than 15°C, the no-aeration operation mode is adopted. The highly enriched autotrophic bacteria in the wetland can still effectively remove pollutants in the water, and the quality of the effluent water can reach the first-class B standard.
附图说明 Description of drawings
图1为一种季节性曝气生活污水深度脱氮工艺方法的流程示意图。 Figure 1 is a schematic flow chart of a seasonal aeration domestic sewage deep denitrification process.
图2为利用本发明中所述工艺方法对原生生活污水进行处理的生物生态组合装置流程图，其中(a)为主视图，(b)为俯视图。 Fig. 2 is a flow chart of a bio-ecological combination device for treating primary domestic sewage using the process described in the present invention, wherein (a) is a main view, and (b) is a top view.
图中标号： 1为进水口，2、6分别为第一放空管和第二放空管，3为污水流， 7为分流阀，4和5为分流阀的第一出水口和第二出水口，8为曝气机，9为空气阀门，10为空气流量计，11、12分别为第一、第二穿孔布水管，13、20分别为第一、第二湿地填料，14、15和22为第一上弯出水管（出水口）、第二上弯出水管（出水口）和第三上弯出水管，16为布水管，17为布水区填料，18、21分别为第一穿孔布水板和第二穿孔布水板，19为湿地植物菖蒲，23为厌氧酸化池，24为曝气垂直流湿地，25为无曝气垂直流湿地，26为水平潜流湿地。 Numbers in the figure: 1 is the water inlet, 2 and 6 are the first vent pipe and the second vent pipe respectively, 3 is the sewage flow, 7 is the diverter valve, 4 and 5 are the first water outlet and the second diverter valve Water outlet, 8 is an aerator, 9 is an air valve, 10 is an air flow meter, 11, 12 are the first and second perforated water distribution pipes, 13, 20 are the first and second wetland fillers, 14, 15 and 22 are the first upward curved water outlet pipe (water outlet), the second upward curved water outlet pipe (water outlet) and the third upward curved water outlet pipe, 16 is the water distribution pipe, 17 is the filler in the water distribution area, 18 and 21 are respectively the first The first perforated water distribution board and the second perforated water distribution board, 19 is a wetland plant calamus, 23 is an anaerobic acidification pond, 24 is an aerated vertical flow wetland, 25 is a non-aeration vertical flow wetland, and 26 is a horizontal subsurface flow wetland.
具体实施方式 Detailed ways
下面通过实施案例结合附图进一步说明本发明。 The present invention will be further described below by means of examples in conjunction with the accompanying drawings.
实施案例1：本实施案例是利用所述季节性曝气生活污水深度脱氮的工艺方法，对分散型生活污水进行深度脱氮除磷处理。具体实施方式如下： Implementation case 1: This implementation case is to use the process method of deep denitrification of seasonal aeration domestic sewage to carry out deep denitrification and phosphorus removal treatment on dispersed domestic sewage. The specific implementation is as follows:
处理装置包括：厌氧酸化池23、曝气垂直潜流人工湿地24、无曝气垂直流人工湿地25、水平潜流湿地26、污水泵、曝气机8、空气流量计10、湿地填料、湿地植物菖蒲19。其中厌氧酸化池23采用透明PVC板制作，厌氧水解池23的尺寸为0.55m×0.25m×0.7m，装置内部各填充约50%容积、直径80mm的球形悬浮填料；水解池出水口处设分流阀7。曝气垂直流人工湿地24为PVC圆柱，直径40cm、高65cm，底部设有曝气头，内部设有第一湿地填料13，从下至上填有50mm粒径为20-30mm石子、50mm粒径为10-15mm砾石、450mm粒径为3-9mm的砾石。无曝气垂直流人工湿地25为PVC圆柱，直径70cm、高65cm，无曝气设备，其内设有第二湿地填料20，所述第二湿地填料20同曝气垂直流人工湿地24内的第一湿地填料13。水平潜流人工湿地26尺寸为1.5m×0.4m×0.7m，其内设有第三湿地填料，所述第三湿地填料为铺设550mm粒径为3-9mm的砾石。曝气垂直流人工湿地24、无曝气垂直流人工湿地25和水平潜流人工湿地26中均种植适合亚热带气候的观赏性植物菖蒲19。 Treatment devices include: anaerobic acidification tank 23, aerated vertical underflow constructed wetland 24, non-aerated vertical flow constructed wetland 25, horizontal underflow wetland 26, sewage pump, aerator 8, air flow meter 10, wetland filler, wetland plants calamus19. Wherein the anaerobic acidification tank 23 is made of transparent PVC board, the size of the anaerobic hydrolysis tank 23 is 0.55m × 0.25m × 0.7m, and the inside of the device is filled with about 50% of the volume and spherical suspended filler with a diameter of 80mm; at the water outlet of the hydrolysis tank Set diverter valve 7. The aerated vertical flow artificial wetland 24 is a PVC cylinder with a diameter of 40 cm and a height of 65 cm. There is an aeration head at the bottom and a first wetland filler 13 inside, filled with 50 mm particle size 20-30 mm stones and 50 mm particle size from bottom to top. It is 10-15mm gravel and 450mm gravel with a particle size of 3-9mm. The non-aeration vertical flow constructed wetland 25 is a PVC cylinder with a diameter of 70 cm and a height of 65 cm, without aeration equipment, and a second wetland filler 20 is arranged inside it, and the second wetland filler 20 is the same as that in the aerated vertical flow constructed wetland 24. The first wetland filler 13 . The size of the horizontal subsurface constructed wetland 26 is 1.5m×0.4m×0.7m, and the third wetland filler is arranged in it, and the third wetland filler is gravel with a particle size of 550mm and a particle size of 3-9mm. The aerated vertical flow constructed wetland 24 , the non-aerated vertical flow constructed wetland 25 and the horizontal subsurface flow constructed wetland 26 are all planted with calamus calamus 19 , an ornamental plant suitable for subtropical climate.
各装置及设备的具体连接方式参照图2（生物生态组合装置流程图 – 侧视图和俯视图）： Refer to Figure 2 for the specific connection methods of each device and equipment (flow chart of bio-ecological combination device – side view and top view):
厌氧酸化池23与以公开的发明专利文件（CN 102260021 A）中所述的相同，厌氧酸化池23中的水流方式为折流，污水由上部进水口1泵入，经由3个折流板，最后从上部出水口经由分流阀7分流。厌氧酸化池23前、后的底部设有第一放空管2和第二放空管6，放空管用于剩余污泥及沉积物的定期清空、排放； The anaerobic acidification tank 23 is the same as that described in the published invention patent document (CN 102260021 A). The water flow mode in the anaerobic acidification tank 23 is baffles, and the sewage is pumped in from the upper water inlet 1 and passes through 3 baffles. plate, and finally diverted from the upper water outlet through diverter valve 7. The bottom of the front and back of the anaerobic acidification tank 23 is provided with a first vent pipe 2 and a second vent pipe 6, and the vent pipe is used for regularly emptying and discharging excess sludge and sediments;
厌氧酸化池23的出水经分流阀7分流后，从第一出水口4流入曝气垂直流湿地24，从第二出水口5流入无曝气垂直流湿地25。分别经由第一穿孔布水管11、第二穿孔布水管12进入曝气垂直流湿地24和无曝气垂直流湿地25，水流自上而下经过介质，最后从出水管流入水平潜流人工湿地26。曝气垂直流湿地24底部设有曝气管，外部设有曝气机8，空气经由空气流量计10及空气阀门9进入曝气管。曝气垂直流湿地24和无曝气垂直流湿地25设有第一上弯出水管14和第二上弯出水管15，用以曝气垂直流湿地24和无曝气垂直流湿地25中的有效水位。 After the outlet water of the anaerobic acidification tank 23 is diverted by the diverter valve 7, it flows into the aerated vertical flow wetland 24 from the first water outlet 4, and flows into the non-aeration vertical flow wetland 25 from the second water outlet 5. Enter the aerated vertical flow wetland 24 and the non-aerated vertical flow wetland 25 through the first perforated water distribution pipe 11 and the second perforated water distribution pipe 12 respectively. The aeration vertical flow wetland 24 is provided with an aeration pipe at the bottom, and an aerator 8 is provided outside, and air enters the aeration pipe through an air flow meter 10 and an air valve 9 . The aerated vertical flow wetland 24 and the non-aeration vertical flow wetland 25 are provided with a first upwardly curved water outlet pipe 14 and a second upwardly curved water outlet pipe 15, which are used for the aeration vertical flow wetland 24 and the non-aeration vertical flow wetland 25. Effective water level.
曝气垂直流湿地24和无曝气垂直流湿地25的出水经由第一上弯出水管14和第二上弯出水管15进入水平潜流湿地26，经布水管16进入水平潜流湿地26的布水区，通过穿孔布水板18均匀流入水平潜流湿地26的有效处理区域，在经后部的穿孔布水板21流入出水区，最后经第三上弯出水管22流出。为保持湿地中有效水位高度，在水平潜流湿地26后部设置第三上弯出水管22。湿地有效处理区域内铺设550mm粒径为3-9mm的砾石，湿地布水、出水区铺设550mm粒径为20-30mm石子，并种植有观赏性植物菖蒲19。 The outlet water from the aerated vertical flow wetland 24 and the non-aerated vertical flow wetland 25 enters the horizontal subsurface flow wetland 26 through the first upward curved water outlet pipe 14 and the second upward curved water outlet pipe 15, and enters the water distribution of the horizontal subsurface flow wetland 26 through the water distribution pipe 16. Area, through the perforated water distribution plate 18 evenly flows into the effective treatment area of the horizontal subsurface flow wetland 26, flows into the water outlet area through the perforated water distribution plate 21 at the rear, and finally flows out through the third upper curved water outlet pipe 22. In order to maintain the effective water level in the wetland, a third upper curved outlet pipe 22 is arranged at the rear of the horizontal subsurface flow wetland 26 . 550mm of gravel with a particle size of 3-9mm is paved in the wetland effective treatment area, and 550mm of gravel with a particle size of 20-30mm is laid in the wetland water distribution and water outlet area, and the ornamental plant calamus19 is planted.
生活污水深度脱氮装置采用季节性曝气的运行方式，周平均温度高于或等于15℃时开启曝气装置, 装置运行的具体工艺参数与处理装置总体处理效果如表1、2所示；周平均温度低于15℃时关闭曝气装置，装置的具体运行工艺参数与处理装置总体处理效果见表3、4。 The deep denitrification device for domestic sewage adopts the operation mode of seasonal aeration, and the aeration device is turned on when the weekly average temperature is higher than or equal to 15°C. The specific process parameters of the device operation and the overall treatment effect of the treatment device are shown in Table 1 and 2; When the weekly average temperature is lower than 15°C, the aeration device is turned off. The specific operating process parameters of the device and the overall treatment effect of the treatment device are shown in Tables 3 and 4.
表1 各装置工艺运行参数表（周平均温度高于或等于15℃） Table 1 Process operation parameters of each device (weekly average temperature higher than or equal to 15°C)
表2系统进、出水水质处理与处理效果（周平均温度高于或等于15℃） Table 2 System inlet and outlet water quality treatment and treatment effect (weekly average temperature higher than or equal to 15°C)
表3 各装置工艺运行参数表（周平均温度低于15℃） Table 3 Process operation parameter list of each device (weekly average temperature is lower than 15°C)
表4系统进、出水水质处理与处理效果（周平均温度低于15℃） Table 4 System inlet and outlet water quality treatment and treatment effect (weekly average temperature is lower than 15°C)
结合表2、4可知，生活污水经该系统主体处理单元，脱氮过程及效果符合本发明设计理念，成功实现了低碳源条件下TN、NH4 +-N的去除：周平均温度高于或等于15℃时，系统出水水质可达地表水Ⅳ类标准，出水可直接作为静止景观水体补充水源；周平均温度低于15℃时，系统出水水质亦可达到污水厂出水一级B标准。 Combining Tables 2 and 4, it can be seen that the denitrification process and effect of domestic sewage through the main processing unit of the system conform to the design concept of the present invention, and the removal of TN and NH 4 + -N under low-carbon source conditions has been successfully realized: the weekly average temperature is higher than Or equal to 15°C, the system effluent quality can reach the surface water category IV standard, and the effluent can be directly used as a supplementary water source for still landscape water bodies; when the weekly average temperature is lower than 15°C, the system effluent quality can also meet the first-class B standard of sewage plant effluent.
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