CN115231704A - Modular multistage biochemical-filtering sewage treatment system - Google Patents
Modular multistage biochemical-filtering sewage treatment system Download PDFInfo
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- CN115231704A CN115231704A CN202210845739.7A CN202210845739A CN115231704A CN 115231704 A CN115231704 A CN 115231704A CN 202210845739 A CN202210845739 A CN 202210845739A CN 115231704 A CN115231704 A CN 115231704A
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- 238000001914 filtration Methods 0.000 title claims abstract description 122
- 239000010865 sewage Substances 0.000 title claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 238000000926 separation method Methods 0.000 claims abstract description 10
- 238000005273 aeration Methods 0.000 claims abstract description 8
- 230000010354 integration Effects 0.000 claims abstract description 7
- 239000000945 filler Substances 0.000 claims description 15
- 238000004065 wastewater treatment Methods 0.000 claims description 10
- 238000012856 packing Methods 0.000 claims 1
- 239000002351 wastewater Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 230000008569 process Effects 0.000 abstract description 20
- 238000004062 sedimentation Methods 0.000 abstract description 9
- 239000010802 sludge Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 12
- 238000010992 reflux Methods 0.000 description 11
- 239000003344 environmental pollutant Substances 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- 239000007788 liquid Substances 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005352 clarification Methods 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 241000108664 Nitrobacteria Species 0.000 description 2
- 238000005842 biochemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000001079 digestive effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000001737 promoting effect Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003124 biologic agent Substances 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/303—Nitrification and denitrification treatment characterised by the nitrification
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
- C02F3/305—Nitrification and denitrification treatment characterised by the denitrification
-
- 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
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention provides a modular multistage biochemical-filtration sewage treatment system, which at least comprises a sewage treatment area, wherein each sewage treatment area comprises a first biochemical area, a first filtering area, a second biochemical area and a second filtering area which are sequentially communicated; one side of the first biochemical region is connected with the water inlet, the tail end of the second filtering region is connected with the clean water region, the tail end of the clean water region is provided with the water outlet, the bottoms of the first biochemical region and the second biochemical region are provided with aeration devices, and the sewage treatment system can realize the integration of sewage biochemical treatment and sludge-water separation; the multistage biochemical-filtering treatment can be realized by making the first biochemical area be an anoxic area and the second biochemical area be an aerobic area; during practical application, the number of the sewage treatment areas can be adjusted according to the characteristics of the sewage in the area to be treated, and the practicability of the treatment system is improved. By the mode, the integration of sewage biochemical treatment and sludge-water separation can be realized without a sedimentation tank, and the cost of the sewage treatment process is effectively reduced.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a modular multistage biochemical-filtration sewage treatment system.
Background
At present, the biological treatment of rural sewage in China has the problems of high cost, large operation and maintenance workload, unstable operation and the like in the actual operation process. Usually, the most AAO and AO series processes are used, and a higher sludge reflux ratio and a higher digestive juice reflux ratio are often needed to ensure that the system has enough sludge concentration and TN removal effect; and although the mode of gas stripping reflux is adopted, one fan can meet the requirements of aeration and reflux, the reflux ratio is difficult to control in the reflux process, a reflux medium needs a large amount of air as power, the influence on the dissolved oxygen of reflux liquid is large, and the requirement of biological nitrogen and phosphorus removal on the dissolved oxygen is difficult to ensure.
In the process of the biological sewage treatment process, because chemical products are not used, natural microorganisms in biological agents are utilized to remove pollutants in sewage, and the process has the advantages of high treatment efficiency, good effluent quality, no secondary pollution to the environment and the like. The biological treatment process is mostly applied to a membrane bioreactor and ecological treatment measures, the membrane bioreactor can avoid sludge backflow, prolong sludge age and improve sludge concentration, and the treatment effect is good, but the process has high investment and operation cost and ecological treatment measures and needs related professionals for management, so the process is not suitable for rural areas; the ecological treatment measures have low energy consumption and simple operation management, but because the treatment load of the ecological treatment process is generally low, the occupied area of equipment is large, the problem of filler blockage is difficult to solve, and the artificial wetland is difficult to stably operate for a long time; in a low-temperature area, the treatment effect of the artificial wetland is greatly reduced.
In the prior art, the application number is 201510902437.9, the publication date is 2018, 8 and 28, and the name is "an integrated sewage treatment device", wherein a sludge-water mixing area, a primary biochemical area and a secondary biochemical area are sequentially arranged in the length direction of a box body, part of sludge and part of mixed liquid in the secondary biochemical area are refluxed to the sludge-water mixing area again by using a reflux mechanism so as to return to the primary biochemical area to form circulation, and the refluxed nitrified liquid in the secondary biochemical area is subjected to denitrification reaction in an anoxic primary biochemical area to remove total nitrogen and improve the sewage treatment capacity; in addition, the mud-water mixing area enables the returned sludge, the inlet water and the returned mixed liquid of the secondary biochemical area to be mixed and then overflow from the partition plate of the mud-water mixing area to enter the primary biochemical area, so that on one hand, the effect of buffering water flow is achieved, and the liquid is more fully mixed. In the technical scheme, the denitrification reaction of the primary biochemical region is promoted by refluxing the nitrifying liquid, so that the sewage treatment capacity is improved. Although the above process can improve the sewage treatment capacity, the circulation process between biochemical regions cannot effectively remove the sludge in the sewage, and the denitrification effect of the process of promoting the denitrification reaction by using the nitrification liquid reflux is not high.
In the prior art, a utility model with publication number CN213739096U is provided with an integrated high-efficiency sewage treatment device, which comprises an external device wall, the interior of the external device wall is divided into a plurality of compartments by plate bodies, and the compartments comprise an anaerobic zone, a first anoxic zone, a first aerobic zone, a second anoxic zone, a second aerobic zone, a sedimentation and clarification zone and a high-efficiency fiber filter which are connected in sequence; a part of sewage enters an anaerobic zone for acidification treatment, effluent enters a first anoxic zone for treatment, and effluent enters a first aerobic zone for treatment; and the other part of the sewage and the effluent of the first aerobic zone enter a second anoxic zone together for treatment, the effluent enters a second aerobic zone for treatment, the effluent enters a sedimentation clarification zone, a phosphorus removing agent is added into the sedimentation clarification zone for phosphorus removal, sludge and water are separated in the sedimentation clarification zone, the effluent enters a high-efficiency fiber filter for filtration, and the effluent is disinfected. Although the technical scheme can be used for efficiently treating sewage, the sedimentation area and the filter increase the floor area of equipment, and meanwhile, the sludge needs to be refluxed to realize sludge-water separation in a mode of arranging the filter at the tail end of the equipment, so that the efficiency of sewage treatment is reduced, and the operation energy consumption and the operation maintenance management difficulty of a sewage treatment system are increased.
In view of the above, there is a need for an improved modular multi-stage bio-chemical-filtration wastewater treatment system to solve the above problems.
Disclosure of Invention
The invention aims to provide a modular multistage biochemical-filtration sewage treatment system.
In order to achieve the above object, the present invention provides a modular multistage biochemical-filtration sewage treatment system, which at least comprises a sewage treatment area, wherein the sewage treatment area comprises a first biochemical area, a first filtration area, a second biochemical area and a second filtration area which are sequentially communicated;
one side of the first biochemical region is connected with the water inlet, the tail end of the second filtering region is connected with the clean water region, the tail end of the clean water region is provided with a water outlet, the bottoms of the first biochemical region and the second biochemical region are provided with aeration devices, and the sewage treatment system can realize the integration of sewage biochemical treatment and mud-water separation.
Preferably, the first biochemical region is an anoxic region, and the second biochemical region is an aerobic region.
Preferably, the residence time of the sewage in the first biochemical region and the second biochemical region is 2-6 h.
Preferably, a plurality of detachable filtering components are arranged in the first filtering area side by side, and each filtering component comprises a fixed framework and flexible fillers respectively arranged on two sides of the fixed framework.
Preferably, the thickness of the flexible filler is 2-5 cm.
Preferably, the number of the filter assemblies is 1 to 20.
Preferably, a plurality of installation clamping grooves are formed in the first filtering area, and installation blocks capable of being clamped in the installation clamping grooves are arranged at corresponding positions on the fixed framework.
Preferably, the number of the mounting slots is not less than the number of the mounting blocks.
Preferably, the fixed framework is a quadrilateral, and a fixing piece for fixing the flexible filler is arranged in the fixed framework.
Preferably, the first filtering zone and the second filtering zone are anoxic zones.
The invention has the beneficial effects that:
1. the invention provides a modularized multistage biochemical-filtration sewage treatment system, which at least comprises a sewage treatment area, wherein the sewage treatment area is provided with a first biochemical area, a first filtering area, a second biochemical area and a second filtering area which are sequentially communicated, the first biochemical area is an anoxic area, the second biochemical area is an aerobic area, and multistage biochemical-filtration treatment can be realized, so that a sedimentation tank is not required to be arranged, and pollutants in sewage can be removed and sludge-water separation can be realized without sludge backflow and digestive juice backflow. By the mode, the floor area of the sewage treatment system is reduced, and the operation energy consumption and the operation maintenance management difficulty of the sewage treatment system are reduced.
2. According to the modular multistage biochemical-filtration sewage treatment system provided by the invention, the first biochemical area and the second biochemical area are set to be in the state of alternating anoxic areas and aerobic areas, so that the filtration system is generally in a multistage AO form, and the denitrification effect is enhanced; the tail end of each level of biochemical area is provided with the filtering area, so that the sewage after biochemical treatment can be filtered, the activated sludge is intercepted in the biochemical area, the sludge age of the sludge is favorably prolonged, the propagation of nitrobacteria is facilitated, and the biological denitrification is promoted; through set up multiunit detachable filtering component in the filtering area, realize filterable purpose with flexible filler simultaneously, not only be convenient for install and dismantle filtering component, still can ensure that sewage has high filtration flux in filtering component when guaranteeing the filter effect, in addition, because sewage passes through filtering component one by one, consequently only can block up the filtering component that passes through earlier, subsequent filtering component is difficult for appearing blockking up, furthermore, can dismantle the mode that sets up filtering component and can be when filtering component appears blockking up, change its filtering component with the terminal of another filtering area, it can to utilize inside water to carry out the backwash, also can be through off-line washing, the problem that filtering component is blockked up has effectively been solved to the above-mentioned process, filtering component's recycle has been realized, sewage treatment system's practicality has effectively been promoted, in addition, the outside good oxygen of flexible filler on the filtering component, inside local oxygen deficiency, can realize denitrification and partial synchronous nitrification function. According to the sewage treatment system provided by the invention, alternate biochemical-filtration treatment is carried out on sewage by utilizing the biochemical region and the filtering region which are arranged at intervals, and meanwhile, the flexible filler capable of promoting the denitrification effect is arranged in the filtering region to improve the denitrification effect.
Drawings
FIG. 1 is a schematic diagram of a modular multi-stage bio-chemical-filtration wastewater treatment system according to the present invention;
FIG. 2 is a schematic view of the filter assembly of FIG. 1;
FIG. 3 is a schematic view of the construction of a single filter assembly of FIG. 2;
FIG. 4 is a schematic structural view of the filter assembly of FIG. 3;
FIG. 5 is a flow diagram of a modular multi-stage biochemical-filtration wastewater treatment system of the present invention;
the reference numbers are as follows:
100. a modular multistage biochemical-filtration sewage treatment system; 10. a sewage treatment area; 20. a first biochemical region; 21. a water inlet; 30. a first filtering area; 31. a filter assembly; 311. fixing the framework; 312. a flexible filler; 40. a second biochemical region; 50. a second filtering zone; 51. a clear water zone; 511. a water outlet; 60. an aeration device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the aspects of the present invention are shown in the drawings, and other details not closely related to the present invention are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 to 5, the present invention provides a modular multistage biochemical-filtration sewage treatment system 100, which at least comprises a sewage treatment area 10, each sewage treatment area comprises a first biochemical area 20, a first filtration area 30, a second biochemical area 40 and a second filtration area 50 which are sequentially communicated, one side of the first biochemical area 20 is connected with a water inlet 21, the end of the second filtration area 50 is connected with a clean water area 51, the end of the clean water area 51 is provided with a water outlet 511, and the bottoms of the first biochemical area 20 and the second biochemical area 40 are provided with aeration devices 60 so as to control the biochemical areas to be in an anoxic or aerobic state. Through utilizing above-mentioned system to carry out multistage biochemical treatment and filtration treatment to sewage, realized sewage biochemical treatment and mud-water separation integration, improved the efficiency of getting rid of suspended solid in the sewage to can improve the denitrogenation effect.
Referring to fig. 1 to 4, the bottom of the first biochemical region 20 and the second biochemical region 40 is provided with an aeration device 60, so that the first biochemical region 20 is an anoxic region, the second biochemical region 40 is an aerobic region, sewage is subjected to denitrification reaction in the first biochemical region 20, and is subjected to nitrification reaction in the second biochemical region 40, and the residence time of the sewage in the first biochemical region 20 and the second biochemical region 40 is 2-6 hours, thereby ensuring the sufficient biochemical reaction and facilitating the sedimentation of sludge in the sewage.
Further, the first filtering area 30 is arranged at the tail end of the first biochemical area 20, a plurality of detachable filtering components 31 are arranged in the first filtering area 30 side by side, the number of the filtering components 31 is 1-20, and under the filtering components 31 in the number, the filtering effect can be ensured, and meanwhile, the filtered water can pass through smoothly; the filtering component 31 comprises a fixed framework 311 and flexible fillers 312 respectively arranged at two sides of the fixed framework 311, the fixed framework 311 is quadrilateral, fixing members (not numbered in the figure) for fixing the flexible fillers are arranged in the fixed framework 311 to ensure that the flexible fillers 312 can be stably fixed on the fixed framework 311 and meet the strength requirement of the filtering component 31 in the sewage treatment process, the thickness of the flexible fillers 312 at each side is 2-5 cm, and because a filtering area is in an anoxic state, a certain amount of denitrifying microorganisms can grow on the flexible fillers 312, so that the denitrifying denitrification effect is improved.
Particularly, the filtering component 31 is detachably disposed in the first filtering area 30, specifically, a plurality of mounting slots (not shown in the figure) are disposed in the first filtering area 30, mounting blocks (not numbered in the figure) that can be clamped in the mounting slots are disposed at corresponding positions on the fixing framework 311 of the filtering component 31, and the number of the mounting slots is not less than the number of the mounting blocks, so that the filtering component 31 can be conveniently mounted and dismounted; in addition, when the first filtering section 30 is blocked, the filtering component 31 close to the first filtering section 30 and the filtering component 31 at the tail end of the second filtering section 50 can be replaced, the filtering component 31 replaced from the first filtering section 30 can be installed at the tail end of the second filtering section 50, meanwhile, the filtering surface of the filtering component 31 faces outwards, the filtering surface is backwashed by utilizing the hydraulic power in the system, and the detached filtering component 31 can also be directly cleaned off line. Through the setting, can make the sewage through preliminary treatment pass through biochemical district and filtering area of each grade in proper order, carry out biochemical and filtration treatment to sewage in turn to make pollutant concentration and activated sludge concentration in the sewage reduce step by step, simultaneously, the activated sludge all is held back in the filtering area after filtering at every turn, has realized the separation of mud and water conservancy, and extension mud age helps nitrobacteria to breed, promotes biological denitrogenation. The second filtering portion 50 is disposed at the end of the second biochemical region 40, and has a structure substantially identical to that of the first filtering portion 30, which will not be described herein. It should be noted that, in the practical application process, the composition of the sewage treatment area can be adjusted according to the condition of the pollutants in the sewage, and when the concentration of the pollutants in the sewage is very low, only the first biochemical area 20 and the first filtering area 30 can be arranged; when the concentration of the pollutant in the sewage is high, the sewage treatment area can be increased adaptively according to actual needs, and it should be understood by those skilled in the art that after the sewage treatment tank is added, the first biochemical area 20 is connected with the water inlet 21, and the last second filtering area 50 is connected with the clean water area 51.
The working principle of the invention is as follows: when the sewage treatment system 100 provided by the invention is applied to sewage treatment, pretreated sewage is firstly introduced into the first biochemical region 20 through the water inlet 21, denitrification reaction occurs in the region due to the anoxic state of the region, then the water power treated by the first biochemical region 20 passes through the first filtering region 30, and the filtering component 31 in the first filtering region 30 can intercept active sludge in the water power, so that the sludge stays in the first biochemical region 20. Then, the water filtered by the first filtering area 30 enters the aerobic second biochemical area 40 for a second biochemical reaction, and finally, a clean water body is obtained through the filtering action of the second filtering area 50, if pollutants still exist in the water body at the moment, the water body can be further subjected to biochemical and filtering treatment by additionally arranging a sewage treatment area until no pollutants exist in the water body.
In summary, the present invention provides a modular multistage biochemical-filtration sewage treatment system 100, which at least comprises a sewage treatment area, wherein the sewage treatment area comprises a first biochemical area 20, a first filtration area 30, a second biochemical area 40 and a second filtration area 50 which are sequentially connected; one side of the first biochemical region 20 is connected with the water inlet 21, the tail end of the second filtering region 50 is connected with the clean water region 51, the tail end of the clean water region 51 is provided with a water outlet 511, the bottoms of the first biochemical region 20 and the second biochemical region 40 are connected with the aeration device 60, and the sewage treatment system can realize the integration of sewage biochemical treatment and sludge-water separation; by making the first biochemical zone 20 an anoxic zone and the second biochemical zone 40 an aerobic zone, a multistage biochemical-filtration process can be achieved. Through the mode, the sewage treatment efficiency is effectively improved, the integration of sewage biochemical treatment and sludge-water separation can be realized without arranging a sedimentation tank, and the cost of the sewage treatment process is effectively reduced.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (10)
1. A modular multistage biochemical-filtration sewage treatment system is characterized by at least comprising a sewage treatment area, wherein the sewage treatment area comprises a first biochemical area, a first filtering area, a second biochemical area and a second filtering area which are sequentially communicated;
one side of the first biochemical region is connected with the water inlet, the tail end of the second filtering region is connected with the clean water region, the tail end of the clean water region is provided with a water outlet, the bottoms of the first biochemical region and the second biochemical region are provided with aeration devices, and the sewage treatment system can realize the integration of sewage biochemical treatment and mud-water separation.
2. The modular multistage biochemical-filtration wastewater treatment system of claim 1, wherein the first biochemical zone is an anoxic zone and the second biochemical zone is an aerobic zone.
3. The modular multistage biochemical-filtration wastewater treatment system according to claim 1, wherein the residence time of the wastewater in the first biochemical zone and the second biochemical zone is 2-6 h.
4. The modular multistage biochemical-filtration wastewater treatment system according to claim 1, wherein a plurality of detachable filtration components are arranged in the first filtration zone side by side, and each filtration component comprises a fixed framework and flexible fillers respectively arranged at two sides of the fixed framework.
5. The modular multistage biochemical-filtration wastewater treatment system according to claim 4, wherein the flexible packing has a thickness of 2-5 cm.
6. The modular multistage biochemical-filtration wastewater treatment system according to claim 4, wherein the number of filtration modules is 1 to 20.
7. The modular multistage biochemical-filtration sewage treatment system according to claim 6, wherein a plurality of mounting slots are provided in the first filtration zone, and mounting blocks capable of being clamped in the mounting slots are provided at corresponding positions on the fixed frame.
8. The modular multistage biochemical-filtration wastewater treatment system according to claim 7, wherein the number of mounting slots is not less than the number of mounting blocks.
9. The modular multistage biochemical-filtration sewage treatment system according to claim 4, wherein the fixed frame is quadrilateral, and a fixing piece for fixing the flexible filler is arranged in the fixed frame.
10. The modular multistage biochemical-filtration wastewater treatment system according to claim 1, wherein the first filtration zone and the second filtration zone are anoxic zones.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210845739.7A CN115231704A (en) | 2022-07-19 | 2022-07-19 | Modular multistage biochemical-filtering sewage treatment system |
| PCT/CN2022/121626 WO2023178966A1 (en) | 2022-07-19 | 2022-09-27 | Modular multi-stage biochemical-filtering sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210845739.7A CN115231704A (en) | 2022-07-19 | 2022-07-19 | Modular multistage biochemical-filtering sewage treatment system |
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| CN115231704A true CN115231704A (en) | 2022-10-25 |
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| JP4848144B2 (en) * | 2005-06-30 | 2011-12-28 | 前澤工業株式会社 | Waste water treatment equipment |
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