CN202148220U - Closed aeration biological filter - Google Patents
Closed aeration biological filter Download PDFInfo
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- CN202148220U CN202148220U CN201120235625U CN201120235625U CN202148220U CN 202148220 U CN202148220 U CN 202148220U CN 201120235625 U CN201120235625 U CN 201120235625U CN 201120235625 U CN201120235625 U CN 201120235625U CN 202148220 U CN202148220 U CN 202148220U
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- 238000005273 aeration Methods 0.000 title claims abstract description 16
- 239000000463 material Substances 0.000 claims abstract description 56
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 51
- 238000011001 backwashing Methods 0.000 claims abstract description 14
- 238000011010 flushing procedure Methods 0.000 claims abstract description 13
- 239000010802 sludge Substances 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 9
- 238000004062 sedimentation Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 238000003915 air pollution Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 6
- 244000005700 microbiome Species 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- 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
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- Biological Treatment Of Waste Water (AREA)
Abstract
一种封闭曝气生物滤池，壳体分为上部出水区、滤料区、中部进水曝气区与底部倒锥形结构的污泥沉淀区、间隙清洗空气室，进水曝气区的下部设置有进水管与曝气管，中部设置有反冲洗的下冲洗管，上部设置有上冲洗管；上部出水区与滤料区之间采用滤料挡板分隔，滤料区内设置有悬浮滤料；在滤料挡板上均布有若干滤水帽，上部出水区与滤料区之间通过滤水帽实现液体的连通；在上部出水区内设置有出水管，在污泥沉淀区底部设置有排泥管。本实用新型采用比重小于水的轻质滤料，具有较好的机械强度和化学稳定性，具有较好的处理效果；本实用新型将顶盖封闭，并通过排气口将排出的气体统一处理，减轻对工作环境的空气污染，符合绿色环保节能的要求。
A closed biological aerated filter, the shell is divided into the upper water outlet area, the filter material area, the middle water inlet aeration area, the sludge sedimentation area with an inverted conical structure at the bottom, the gap cleaning air chamber, and the water inlet aeration area. The lower part is provided with a water inlet pipe and the aeration pipe, the middle part is provided with a lower flushing pipe for backwashing, and the upper part is provided with an upper flushing pipe; the upper part is separated from the filter material area by a filter material baffle, and a suspension Filter material; there are several filter caps evenly distributed on the filter material baffle, and the liquid connection between the upper water outlet area and the filter material area is realized through the filter water caps; there is an outlet pipe in the upper water outlet area, and in the sludge sedimentation area There is a mud discharge pipe at the bottom. The utility model adopts light filter material whose specific gravity is smaller than that of water, has good mechanical strength and chemical stability, and has good treatment effect; the utility model closes the top cover and uniformly processes the discharged gas through the exhaust port , to reduce air pollution to the working environment, in line with the requirements of green environmental protection and energy saving.
Description
技术领域 technical field
本实用新型涉及环保设备领域，尤其是一种封闭曝气生物滤池。 The utility model relates to the field of environmental protection equipment, in particular to a closed aerated biological filter tank.
背景技术 Background technique
曝气生物滤池用于在污水处理中实现硝化、反硝化，其使用粗糙多孔的粒状滤料，滤料表面生产有生物膜，在池底提供曝气；污水流过过滤床时，污染物首先被过滤和吸附，进而被滤料表面的微生物氧化分解，其最大特点是集生物氧化和截留悬浮物于一体，节省了后续沉淀池，具有容积负荷大、水力停留时间短、出水水质高等特点。但是现有的曝气生物滤池多采用沉没式滤料，其截留与降解效果不佳，且多数为敞口结构，排出的气体易对工作环境造成空气污染。 Biological aerated filter is used to realize nitrification and denitrification in sewage treatment. It uses rough and porous granular filter material with biofilm on the surface of the filter material to provide aeration at the bottom of the tank; when sewage flows through the filter bed, pollutants It is firstly filtered and adsorbed, and then oxidized and decomposed by microorganisms on the surface of the filter material. Its biggest feature is that it integrates biological oxidation and intercepted suspended solids, saving subsequent sedimentation tanks. It has the characteristics of large volume load, short hydraulic retention time, and high effluent quality. . However, most of the existing biological aerated filters use submerged filter materials, which have poor interception and degradation effects, and most of them are open structures, and the discharged gas is likely to cause air pollution to the working environment.
实用新型内容 Utility model content
本申请人针对上述现有曝气生物滤池处理效率不佳、气体直接排出等缺点，提供一种结构合理的封闭曝气生物滤池，从而提高处理效率，且可以对排出的气体统一处理，减轻对工作环境的空气污染。 In view of the disadvantages of the above-mentioned existing biological aerated filter, such as poor treatment efficiency and direct gas discharge, the applicant provides a closed biological aerated filter with a reasonable structure, thereby improving the treatment efficiency, and can uniformly process the discharged gas. Reduce air pollution to the working environment.
本实用新型所采用的技术方案如下： The technical scheme adopted in the utility model is as follows:
一种封闭曝气生物滤池，壳体分为上部出水区、滤料区、中部进水曝气区与底部倒锥形结构的污泥沉淀区、间隙清洗空气室，进水曝气区的下部设置有进水管与曝气管，中部设置有反冲洗的下冲洗管，上部设置有上冲洗管；上部出水区与滤料区之间采用滤料挡板分隔，滤料区内设置有悬浮滤料；在滤料挡板上均布有若干滤水帽，上部出水区与滤料区之间通过滤水帽实现液体的连通；在上部出水区内设置有出水管，在污泥沉淀区底部设置有排泥管，壳体顶部为封闭结构并设置有排气口。 A closed biological aerated filter, the shell is divided into the upper water outlet area, the filter material area, the middle water inlet aeration area, the sludge sedimentation area with an inverted conical structure at the bottom, the gap cleaning air chamber, and the water inlet aeration area. The lower part is provided with a water inlet pipe and the aeration pipe, the middle part is provided with a lower flushing pipe for backwashing, and the upper part is provided with an upper flushing pipe; the upper part is separated from the filter material area by a filter material baffle, and a suspension Filter material; there are several filter caps evenly distributed on the filter material baffle, and the liquid connection between the upper water outlet area and the filter material area is realized through the filter water caps; there is an outlet pipe in the upper water outlet area, and in the sludge sedimentation area The bottom is provided with a mud discharge pipe, and the top of the shell is a closed structure with an exhaust port.
其进一步特征在于：生物滤池滤料层厚度为1300-1500mm；滤料粒径为Φ4～8mm，滤料负荷为2.5～4.0kgBOD5/(m3·d)。 It is further characterized in that: the thickness of the filter material layer of the biofilter is 1300-1500mm; the particle size of the filter material is Φ4-8mm, and the load of the filter material is 2.5-4.0kgBOD 5 /(m3·d).
本实用新型的有益效果如下： The beneficial effects of the utility model are as follows:
本实用新型采用比重小于水的轻质滤料，具有较好的机械强度和化学稳定性，在为微生物提供生长环境、截留SS等方面优于沉没滤料，因此具有较好的处理效果。 The utility model adopts a light filter material with a specific gravity smaller than water, which has better mechanical strength and chemical stability, and is better than a sinking filter material in terms of providing a growth environment for microorganisms and retaining SS, so it has a better treatment effect.
本实用新型将顶盖封闭，并通过排气口将排出的气体统一处理，减轻对工作环境的空气污染，减小对工作环境通风量，符合绿色环保节能的要求。 The utility model closes the top cover, and uniformly processes the discharged gas through the exhaust port, so as to reduce the air pollution to the working environment, reduce the ventilation volume of the working environment, and meet the requirements of green environmental protection and energy saving.
附图说明 Description of drawings
图1为本实用新型的中剖图。 Fig. 1 is the middle sectional view of the utility model.
具体实施方式 Detailed ways
下面结合附图，说明本实用新型的具体实施方式。 Below in conjunction with accompanying drawing, illustrate the specific embodiment of the present utility model.
如图1所示，本实用新型所述的封闭曝气生物滤池可以为壳体8或者池体结构，壳体8分为上部出水区12、滤料区13、中部进水曝气区14与底部倒锥形结构的污泥沉淀区15，间隙清洗空气室17，间隙清洗进气口16，进水曝气区14的下部设置有进水管9与曝气管10，中部设置有反冲洗的下冲洗管7，上部设置有上冲洗管6；上部出水区12与滤料区13之间采用滤料挡板2分隔，滤料区13内设置有悬浮滤料5；在滤料挡板2上均布有若干滤水帽1，上部出水区12与滤料区13之间通过滤水帽1实现液体的连通；在上部出水区12内设置有出水管4，在污泥沉淀区15底部设置有排泥管11。本实用新型的壳体8顶部为封闭结构，设置有排气口3将工作运行时的气体排出口。本实用新型的生物滤池滤料层厚度为1300-1500mm；滤料粒径为Φ4～8mm，滤料负荷为2.5～4.0kgBOD5/(m3·d)；气水比在12～20之间；出水溶解氧控制在2.5～3.5mg/L之间。
As shown in Figure 1, the closed biological aerated filter described in the utility model can be a
实际工作时，污水从进水管9流入本实用新型的壳体8内腔，自下向上进入滤层下部的进水曝气区14，由下向上穿过滤层13(在滤料阻力的作用下使滤池进水均匀)；空气从进气管10进入进水曝气区14，滤料5表面生长着含有大量微生物的生物膜，微生物利用水中的溶解氧降解一部分有机物及氨氮，同时进水中的悬浮物质经滤料5过滤被截留；水流以上向流的形式通过滤层区13顶部，经由滤水帽1、上部出水区12后，由出水管4排出。废气经由上部出水区12后，由排气管3排出。
During actual work, sewage flows into the
曝气生物滤池内生物滤料经历在好氧过量摄取磷、厌氧释放磷、厌氧水解、氧化、老化生物膜脱落过程中，达到新生与老化生物膜的动态平衡；在好氧区缺氧区内，反硝化细菌利用进水中的有机物作为碳源将滤池进水中的NO3-N 转化为N2，实现反硝化脱氮，降解BOD5，SS通过一系列复杂的物化过程被滤料及其上面的生物膜吸附截留在滤床内。流出滤料层的净化后废水通过滤池挡板上的出水滤头排出滤池。由于滤料层内生物膜逐渐增厚，SS不断积累，过滤水头损失逐步加大，在一定进水压力下，运行流量将得不到保证，此时即需进入反冲洗再生，以去除滤床内过量的生物膜及SS。 The biological filter material in the biological aerated filter reaches the dynamic balance of the new biofilm and the aging biofilm through the process of aerobic excess phosphorus intake, anaerobic release of phosphorus, anaerobic hydrolysis, oxidation, and aging biofilm shedding; In the oxygen zone, denitrifying bacteria use the organic matter in the influent as a carbon source to convert NO 3 -N in the filter influent into N 2 , realize denitrification and denitrification, and degrade BOD 5 . SS undergoes a series of complex physical and chemical processes The filter material and the biofilm above it are adsorbed and trapped in the filter bed. The purified waste water flowing out of the filter material layer is discharged from the filter tank through the outlet filter head on the filter tank baffle. Due to the gradual thickening of the biofilm in the filter material layer and the accumulation of SS, the loss of the filter head gradually increases. Under a certain inlet pressure, the operating flow rate will not be guaranteed. At this time, it needs to enter the backwash regeneration to remove the filter bed. Excessive biofilm and SS within.
当滤池运行一段时间后，需要对滤料进行反冲洗，沉没式滤料生物滤池耗能耗水量大、反冲成本高，而本实用新型的反冲洗耗水量小。反冲洗分经常间隙反洗和加强反洗两种，间隙反洗时，通过在滤池的下部间隙清洗进气口16进气，空气进入间隙清洗空气室17将室内水顶出，当间隙清洗空气室17内水全部被顶出时，壳体8内水迅速回流进入空气室17，使滤料层13突然向下膨胀即达到空气间隙反冲洗，再静置后打开排泥管11排泥，即可达到有效清洁滤料的目的。加强反冲洗的过程是从中部设置的反冲洗的下冲洗管7，上部设置的上冲洗管6进水，上部设置的上冲洗管6用于冲击滤板2上的滤料层。下冲洗管7冲洗在空气间隙反冲洗后进行，下冲洗管7进入的冲洗水使滤料层充分膨胀，在水冲洗剪切力的作用下，使滤料处于半悬浮状态，并相互摩擦，将包裹在滤料表层的多余老化生物污泥杂质冲刷脱落，再静置后打开排泥管11排泥，即可达到有效清洁滤料的目的，使滤池恢复生物净化过滤功能。
After the filter has been in operation for a period of time, the filter material needs to be backwashed. The submerged filter material biological filter consumes a lot of energy and water, and the cost of backwashing is high, but the backwashing of the utility model consumes less water. There are two types of backwashing: frequent backwashing and enhanced backwashing. During backwashing, the air enters the
以上描述是对本实用新型的解释，不是对实用新型的限定，本实用新型所限定的范围参见权利要求，在不违背本实用新型精神的情况下，本实用新型可以作任何形式的修改。 The above description is an explanation of the utility model, not a limitation of the utility model. For the limited scope of the utility model, please refer to the claims. The utility model can be modified in any form without violating the spirit of the utility model. the
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| CN201120235625U CN202148220U (en) | 2011-07-06 | 2011-07-06 | Closed aeration biological filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624507A (en) * | 2020-11-17 | 2021-04-09 | 金科环境股份有限公司 | Low-energy-consumption integrated sewage treatment device |
| CN115367878A (en) * | 2022-08-30 | 2022-11-22 | 河南智慧水务股份有限公司 | Nitrification and denitrification biological filter system of a sewage plant |
-
2011
- 2011-07-06 CN CN201120235625U patent/CN202148220U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112624507A (en) * | 2020-11-17 | 2021-04-09 | 金科环境股份有限公司 | Low-energy-consumption integrated sewage treatment device |
| CN115367878A (en) * | 2022-08-30 | 2022-11-22 | 河南智慧水务股份有限公司 | Nitrification and denitrification biological filter system of a sewage plant |
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Granted publication date: 20120222 |