CN210103710U - Filter tank for low-carbon-nitrogen-ratio chemical sewage - Google Patents
Filter tank for low-carbon-nitrogen-ratio chemical sewage Download PDFInfo
- Publication number
- CN210103710U CN210103710U CN201920890333.4U CN201920890333U CN210103710U CN 210103710 U CN210103710 U CN 210103710U CN 201920890333 U CN201920890333 U CN 201920890333U CN 210103710 U CN210103710 U CN 210103710U
- Authority
- CN
- China
- Prior art keywords
- nitrification
- denitrification
- layer
- pipe
- low
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Abstract
The utility model provides a filter for treating low carbon nitrogen ratio chemical wastewater, wherein the filter consists of a pretreatment unit (1), an adjusting tank (2), a water pump, a three-stage nitrification-denitrification coupling biofilm system (3), a carbon source tank (14), a carbon source pump (15), a dosing pipe (16), a second electric valve (17), a total water outlet (13), a low pressure fan (21), a main air pipe (20), a heating device (19) and a third electric valve (18); by adopting the three-stage nitrification-denitrification coupling biological membrane filter tank process, the defects of large carbon source and alkalinity adding amount and high energy consumption and low conduction efficiency of deep water aeration oxygen supply in the traditional process are overcome, and the low-carbon-nitrogen-ratio chemical sewage is treated with high efficiency and low cost.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to a filtering pond of low carbon nitrogen ratio chemical industry sewage.
Background
The chemical wastewater with low carbon-nitrogen ratio cannot meet the requirement of microorganism growth in the traditional activated sludge process and MBR process because of low COD or no COD basically, and further cannot form a zoogloea structure, thereby causing the loss of strains. At present, in order to solve the problem, the traditional process selects the type of inlet water and adds a carbon source according to the carbon-nitrogen ratio of 5:1, so that the activity of the micro-life, the stability of the zoogloea structure and the carbon source required by denitrification are ensured. After the sewage added with the carbon source enters the aerobic nitrification section, oxygen in the water body is not only provided for nitrifying bacteria in the zoogloea to remove ammonia nitrogen but also provided for other aerobic bacteria in the zoogloea to remove COD, so that the ineffective consumption of the carbon source and dissolved oxygen is caused. Obviously, this tends to increase the cost of wastewater treatment by increasing the cost of carbon sources and the cost of oxygen supply.
The oxygen supply mode of the traditional process is deep water aeration oxygen supply, oxygen in the air is utilized by zoogloea after being dissolved in water, and ammonia nitrogen in the water is also dissolved in the water to form NH4 +The form of (A) is absorbed and transformed by nitrifying bacteria in the zoogloea. In this mode, the oxygen transfer efficiency and the ammonia nitrogen conversion efficiency are low.
In addition, the process of generating alkalinity is the denitrification while the process of consuming alkalinity is the nitrification. In the traditional process, because the aerobic nitrification section is separated from the facultative denitrification section, in order to maintain the optimal pH of strains in the aerobic nitrification section and add the inorganic carbon source required by nitrification reaction, generally, the traditional process adopts the step of adding Na into the aerobic nitrification section2CO3Or NaHCO3The manner of maintaining the PH of the water and the supply of inorganic carbon sources, which tends to increase the alkalinity, increases the cost of wastewater treatment.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a filtering pond and sewage treatment method of low carbon nitrogen ratio chemical wastewater, through adopting tertiary nitrification-denitrification coupling biomembrane filtering pond technology, overcome traditional technology carbon source, basicity and throw the volume of adding greatly, the shortcoming that deep water aeration oxygen supply energy consumption is high conduction efficiency is low, realize that low carbon nitrogen ratio chemical wastewater is handled to high efficiency, low cost.
The purpose of the utility model is realized through the following technical scheme:
the utility model provides a pair of filtering pond of low carbon nitrogen ratio chemical industry sewage, this filtering pond includes: the device comprises a pretreatment unit, a regulating tank, a water pump, a three-stage nitrification-denitrification coupling biological membrane system, a carbon source tank, a carbon source pump, a dosing pipe, a second electric valve, a main water outlet, a low-pressure fan, a main air pipe, a heating device and a third electric valve; the tail end of the dosing pipe is divided into three dosing branch pipes, and the three corresponding air pipe branch pipes are communicated; one end of the main air pipe is provided with a low-pressure fan, and the main air pipe is divided into an air pipe branch pipe at each nitrification-denitrification coupling biological membrane system; the three-stage nitrification-denitrification coupling biological membrane system is formed by connecting three nitrification-denitrification coupling biological membrane systems in series from top to bottom, each nitrification-denitrification coupling biological membrane system is separated by a geomembrane, and each nitrification-denitrification coupling biological membrane system consists of an aerobic nitrification layer and a facultative denitrification layer; the three-stage nitrification-denitrification coupling biological membrane system comprises air pipe branch pipes; the upper stage facultative denitrification water outlet pipe is connected with the lower stage water distribution pipe, the upper stage facultative denitrification water outlet is the lower stage aerobic nitrification layer water inlet, the drainage time and the facultative denitrification layer water level sewage are controlled by the first electric valve, and the surface layer water distribution is carried out by the sewage passing through the surface layer water distribution pipe; the low-pressure fan is used for ventilating and supplying oxygen to the aerobic nitrification layer through an air pipe; the ventilation interval and the ventilation sequence of each layer are controlled by a third electric valve; the dosing interval and the dosing time sequence of each layer are controlled by a second electric valve.
Preferably, the carbon source pump is arranged at the bottom of the carbon source pool and connected with the head end of the dosing pipe to provide a carbon source for the dosing pipe.
Preferably, a second electric valve is arranged on each dosing branch pipe.
Preferably, the main air pipe is provided with a heating device at the end close to the low-pressure fan, and the heating device is started under the low-temperature condition.
Furthermore, the utility model also provides a method of low carbon nitrogen ratio chemical industry sewage, including following processing step:
firstly, adopting aerobic nitrification biomembrane filter material formed by mixing 90% of medium-coarse sand, 3% of zeolite, 6% of chaff and 1% of activated sludge to carry out nitrification section treatment.
And secondly, carrying out denitrification treatment on the facultative denitrification biomembrane filter material formed by mixing 94% of crushed stones with the size of 5-10 mm and 6% of chaff.
And thirdly, coupling a nitrification-denitrification coupling system with each stage by coupling 50cm of aerobic nitrification biomembrane filter material and 50cm of facultative denitrification.
And fourthly, the aerobic nitrification layer is an adsorption and drying layer, the facultative anaerobic layer is a long-term water storage layer, the aerobic nitrification layer and the facultative anaerobic denitrification layer are distinguished through an air pipe (shared by a carbon source pipe), the aerobic nitrification layer is arranged above the air pipe (the carbon source pipe), and the facultative anaerobic denitrification layer water storage layer is arranged below the air pipe. The system creates an aerobic low COD nitrification environment for the upper filter material layer after falling dry through ventilation of the air pipe (carbon source pipe), and creates a facultative anaerobic high COD denitrification environment for the water storage layer added with carbon source through the air pipe (carbon source pipe).
Fifthly, adopting a low-pressure ventilation aeration mode different from the traditional deep water aeration mode for the aerobic nitrification layer, and carrying out infiltration on the sewage through NH with positive charges in the process of water distribution pipes at all stages4 +The ions are adsorbed and enriched in the filter material and the biological membrane with negative charges, and after the sewage falls to dry and then doubles as an oxygen denitrification water storage layer, the filter material and the biological membrane are ventilated at low pressure to supply oxygen for nitration reaction.
Sixthly, the process is formed by connecting three stages of nitrification-denitrification coupling biological membrane systems in series, the three stages are separated by a geomembrane, a first-stage facultative denitrification water outlet pipe is connected with a second-stage water distribution pipe, and first-stage facultative denitrification water outlet is water inlet of a second-stage aerobic nitrification layer; the second-level facultative denitrification water outlet pipe is connected with the third-level water distribution pipe to form second-level facultative denitrification water outlet which is the water inlet of the third-level aerobic nitrification layer; the water discharged from the third-level aerobic nitrification layer is the final total water.
The aerobic nitrification biomembrane filter material in the first step is uniformly mixed by medium sand, zeolite, chaff and activated sludge, wherein the medium sand is used as an adsorption filter material and is also used as a main carrier of the nitrification biomembrane; the zeolite is used as the improvement of mixed filter material pair NH4 +The auxiliary material of (2) further improves the NH content of the mixed filter material4 +The adsorption capacity of (c); the chaff has larger specific surface area and also has the characteristic of slowly releasing the carbon source, and the chaff can be used as a slowly-released organic carbon source to provide partial carbon source and trace elements for the biological membrane while improving the specific surface area of the mixed filter material.
The aerobic nitrification section of the system adopts an intermittent treatment mode of firstly absorbing and then converting, the system is divided into 8 water inlet periods and 16 ventilation periods, firstly, mixed sewage uniformly enters the system from the surface layer through a water distribution pipe on the surface layer of the filter material, and the sewage is subjected to positive charge NH in the process of infiltration between aerobic filter materials4 +The ions are adsorbed by the filter materials with negative charges on the surface layer and the biological membrane growing between the filter materials, and after the sewage falls to the dryness in the aerobic nitrification filter material and enters the facultative denitrification filter material, the low-pressure ventilation and oxygen supply are carried out on the nitrification section through the ventilation pipe between the aerobic nitrification filter material and the oxygen denitrification filter material to provide oxygen for the nitrification reaction. Water distribution is carried out for 3 hours in one period, the time is generally controlled within 30 minutes, and the surface load of water inlet is controlled to be 1m3/m2About x d; ventilating for 1.5 hours for a period, taking the ventilation time-water distribution time as a boundary, introducing primary air 1 hour before water distribution, introducing primary air after water distribution, and controlling the period to be about 20 minutes and the water-steam ratio to be 1: 2.
The facultative denitrification biomembrane filter material in the second step consists of 94% of crushed stone with the diameter of 5-10 mm and 6% of chaff, wherein the crushed stone with the diameter of 5-10 mm is used as an aerobic nitrification short supporting layer and is also used as a main carrier of a denitrification biomembrane; the shell has a large specific surface area and also has the characteristic of slowly releasing the carbon source, and the shell can be used as a slowly-released organic carbon source to provide partial carbon source and trace elements for the biological membrane while improving the specific surface area of the mixed filter material.
The facultative denitrification section of the system is a water storage layer, sewage passing through the aerobic nitrification layer seeps downwards to the facultative denitrification layer, meanwhile, a carbon source meeting denitrification requirements is added through a medicine adding pipe (shared by an air pipe), the carbon-nitrogen ratio is 3.5:1, the sewage passing through the aerobic nitrification layer and the carbon source are mixed, mixed and stay in the denitrification layer for more than 2 hours for sufficient denitrification reaction, collected through a water collecting pipe at the bottom of the system and then discharged through a water discharging pipe connected with the water collecting pipe, and the water storage level and the stay time of the facultative denitrification layer are adjusted and controlled by the height of the water discharging pipe and a water discharging electric valve.
The process in the sixth step is formed by connecting three stages of nitrification-denitrification coupling biological membrane systems in series, the characteristics of alkalinity consumed by nitrification reaction and alkalinity supplemented by denitrification are mainly utilized, partial alkalinity is supplemented to the next stage of inflow water through the upper stage of denitrification layer, the dosage of alkalinity is reduced, meanwhile, partial alkalinity can be added outside each stage of carbon source pipe to meet the requirement of the next stage of nitrification alkalinity, and the controllability of the system is further improved.
The utility model discloses there is following benefit:
1. the utility model discloses the mixed filter material of middlings, zeolite, chaff, the activated sludge that good oxygen nitration section adopted corresponding ratio is as packing, and this kind of biomembrane that uses big specific surface area filter material as the structure carrier compares the zoogloea structure more stable, does not need extra carbon source to maintain its form to the consumption of carbon source has been reduced. Meanwhile, sewage flows through the surfaces of the filter material and the biological membrane in a fluid mode in the process of infiltration and low-pressure ventilation oxygen supply, and compared with the stirring influence of deep water aeration oxygen supply on the zoogloea in the traditional process, the stability is higher.
2. Besides being used as a carrier of microorganisms, the aerobic nitrification section filter material also has strong ammonia nitrogen adsorption capacity. In the process of the infiltration of the filter material in the aerobic nitrification section, the sewage is intercepted and absorbed in the filter material and the biological membrane, after the filter material in the aerobic nitrification section is dried, the sewage is ventilated by an air pipe to supply oxygen, and the nitrification reaction is carried out by nitrifying bacteria in the biological membrane, thereby forming a complete adsorption-reaction system. The filter material has strong adsorption capacity on ammonia nitrogen, so that free NH in the water body4 +The enrichment is realized, and compared with the traditional process, the treatment mode is more refined and efficient.
3. In the traditional process, the oxygen supply mode is a deep water aeration mode, and oxygen in the air is dissolved in the water body and then absorbed and utilized by the zoogloea. And the utility model discloses a ventilation oxygen suppliment mode that the energy consumption is lower treats that sewage flows through after the good oxygen section of nitrifying does, because absorption, the interception effect ammonia nitrogen of filter material are enriched in filter material and biomembrane, then the rethread tuber pipe is direct to carry out the oxygen suppliment of low pressure ventilation to the biomembrane of adhering to in good oxygen nitration layer filter material. Compared with the traditional deep water aeration mode, the oxygen supply mode has more advantages on the oxygen conduction efficiency and reduces the energy consumption by about 80 percent. In addition, when the temperature is lower in winter, the process heats the air through ventilation so that the temperature of the inlet air is not lower than 20 ℃ to maintain the activity of microorganisms.
4. The nitrification and denitrification systems of each stage of the system are coupled, the nitrification layer converts ammonia nitrogen into nitrate nitrogen to enter denitrification, and carbon dioxide generated by denitrification is used as an inorganic carbon source to be supplied to the nitrification layer. The coupling system combines the aerobic nitrification layer and the facultative denitrification layer together in the longitudinal direction, saves the occupied area and reduces the adding amount of the inorganic carbon source.
5. The process is formed by connecting three stages of nitrification-denitrification coupled biological membrane systems in series, wherein the three stages are separated by a geomembrane, a first-stage facultative denitrification water outlet pipe is connected with a second-stage water distribution pipe, and first-stage facultative denitrification water outlet is water inlet of a second-stage aerobic nitrification layer; the second-level facultative denitrification water outlet pipe is connected with the third-level water distribution pipe to form second-level facultative denitrification water outlet which is the water inlet of the third-level aerobic nitrification layer; the water discharged from the third-level aerobic nitrification layer is the final total water. The process consumes 7.14g of alkalinity (as GaCO) by utilizing nitration3Calculated) and denitrification yields 3.57g alkalinity (as GaCO)3Measured), the alkalinity of the sewage with the alkalinity reduced by the nitrification of the previous stage is supplemented by the denitrification reaction of the denitrification layer of the current stage before entering the next stage, so that the adding of the alkalinity of more than 50 percent is reduced, and the operation cost is further reduced.
Drawings
FIG. 1 is a sewage treatment flow chart of a three-stage nitrification-denitrification coupled biofilm system of the present invention.
Fig. 2 is a schematic cross-sectional view of an embodiment of a novel triple nitrification-denitrification coupled biofilm system.
In the figure: 1. the system comprises a pretreatment unit, 2, a regulating tank, 3, a three-stage nitrification-denitrification coupling biological membrane system, 4, an aerobic nitrification layer, 5, a facultative denitrification layer, 6, a surface water distribution pipe, 7, an air pipe branch pipe, 8, a facultative denitrification water outlet pipe, 9, a geomembrane, 10, an air outlet, 11, a first electric valve, 12, a water distribution pipe, 13, a total water outlet, 14, a carbon source tank, 15, a carbon source pump, 16, a chemical feeding pipe, 17, a second electric valve, 18, a third electric valve, 19, a heating device, 20, a main air pipe and 21, a low-pressure fan.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments and accompanying drawings, but the present invention is not limited thereto.
As shown in figure 1, sewage is firstly subjected to treatment such as grating treatment and sedimentation treatment through a pretreatment unit (1), then enters a regulating tank (2), then enters a three-stage nitrification-denitrification coupling biological membrane system (3) through a water pump in a timed, quantitative and intermittent manner, and finally is discharged through a main discharge port after sequentially passing through various stages of nitrification-denitrification coupling biological membrane systems.
As shown in fig. 2, the three-stage nitrification-denitrification coupled biological membrane system (3) is formed by connecting three nitrification-denitrification coupled biological membrane systems in series from top to bottom, each nitrification-denitrification coupled biological membrane system is separated by a geomembrane (9), and each nitrification-denitrification coupled biological membrane system is composed of an aerobic nitrification layer (4) and a facultative denitrification layer (5); the three-stage nitrification-denitrification coupling biological membrane system (3) comprises an air pipe branch pipe (7); an upper-stage facultative denitrification water outlet pipe (8) is connected with a lower-stage water distribution pipe (12), a water outlet of an upper-stage facultative denitrification (5) is a water inlet of a lower-stage aerobic nitrification layer (4), the drainage time and the facultative denitrification layer (5) water level of sewage are controlled by a first electric valve (11), surface-layer homogenization water distribution is firstly carried out on the sewage through a surface-layer water distribution pipe (6), NH4+ is firstly adsorbed by an aerobic nitrification filter material with negative charges on the surface layer and an aerobic nitrification biomembrane in the process of infiltration of the sewage in the aerobic nitrification layer (4), after the sewage falls into the facultative denitrification layer (5), a low-pressure fan (21) is used for ventilating and supplying oxygen to the aerobic nitrification layer (4) through an air pipe (20), and a heating device (19) is started under the low-temperature condition to ensure the microbial activity; the ventilation interval and the ventilation sequence of each layer are controlled by a third electric valve (18); the air passing through the second layer and the third layer is collected by the surface water distribution pipes of the second layer and the third layer and then is discharged through the air outlet (10). After the sewage enters the facultative denitrification layer (5), pumping a carbon source in a carbon source pool (14) into the air pipe branch pipe (7) through a carbon source pump (15) to be mixed with the sewage, and staying for at least 2 hours in the facultative denitrification layer (5) for denitrification reaction; the dosing interval and the dosing time sequence of each layer are controlled by a second electric valve (17). Finally, the sewage treated by the nitrification-denitrification coupling biological membrane system of each stage is discharged through a main water outlet (13).
Jiangxi Tanjing environmental protection science and technology limited company adopts the utility model discloses handle the rare earth tailwater of the gentle cave mining area of young group of gulf river at gulf village bay in Longnan county of Ganzhou city, through several months monitoring, its main pollutant is NH4 +＝60—80mg/l,TN＝100—120mg/l，CODCr10mg/l to 20 mg/l; through the utility model discloses system treatment back NH4 +＝2—6mg/l，TN＝10—20mg/l，COD Cr20 mg/l-40 mg/l, and the carbon-nitrogen ratio of the denitrification carbon source is 3.5: 1. The specific data are as follows:
in addition, jiangxi is good at environmental protection science and technology limited company and adopts the utility model discloses at the monitoring data who decides south north mountain mining area horse mountain direct watershed tombarthite tail water treatment station (4000m3/d), the treatment effect is as follows:
the above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.
Claims (4)
1. The utility model provides a filtering pond of low carbon nitrogen ratio chemical industry sewage which characterized in that, this filtering pond includes: the device comprises a pretreatment unit (1), a regulating tank (2), a water pump, a three-stage nitrification-denitrification coupling biological membrane system (3), a carbon source tank (14), a carbon source pump (15), a dosing pipe (16), a second electric valve (17), a main water outlet (13), a low-pressure fan (21), a main air pipe (20), a heating device (19) and a third electric valve (18); the tail end of the dosing pipe (16) is divided into three dosing branch pipes, and the three corresponding air pipe branch pipes (7) are communicated; one end of the main air pipe (20) is provided with a low-pressure fan (21), and the main air pipe (20) is respectively divided into an air pipe branch pipe (7) at each nitrification-denitrification coupling biological membrane system; the three-stage nitrification-denitrification coupling biological membrane system (3) is formed by connecting three nitrification-denitrification coupling biological membrane systems in series from top to bottom, each nitrification-denitrification coupling biological membrane system is separated by a geomembrane (9), and each nitrification-denitrification coupling biological membrane system consists of an aerobic nitrification layer (4) and a facultative denitrification layer (5); the three-stage nitrification-denitrification coupling biological membrane system (3) comprises an air pipe branch pipe (7); the upper-stage facultative denitrification water outlet pipe (8) is connected with the lower-stage water distribution pipe (12), the water outlet of the upper-stage facultative denitrification layer (5) is the water inlet of the lower-stage aerobic nitrification layer (4), the drainage time and the facultative denitrification layer (5) water level sewage are controlled by a first electric valve (11), and surface-layer homogenization water distribution is carried out on the sewage through the surface-layer water distribution pipe (6); the low-pressure fan (21) ventilates and supplies oxygen to the aerobic nitrification layer (4) through the air pipe (20); the ventilation interval and the ventilation sequence of each layer are controlled by a third electric valve (18); the dosing interval and the dosing time sequence of each layer are controlled by a second electric valve (17).
2. A filter chamber for chemical wastewater with low carbon-nitrogen ratio according to claim 1, characterized in that: the carbon source pump (15) is arranged at the bottom of the carbon source pool (14) and connected with the head end of the dosing pipe (16) to provide a carbon source for the dosing pipe (16).
3. A filter chamber for chemical wastewater with low carbon-nitrogen ratio according to claim 1, characterized in that: and a second electric valve (17) is arranged on each dosing branch pipe.
4. A filter chamber for chemical wastewater with low carbon-nitrogen ratio according to claim 1, characterized in that: the main air pipe is provided with a heating device (19) at the end close to the low-pressure fan (21), and the heating device (19) is started under the low-temperature condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920890333.4U CN210103710U (en) | 2019-06-13 | 2019-06-13 | Filter tank for low-carbon-nitrogen-ratio chemical sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920890333.4U CN210103710U (en) | 2019-06-13 | 2019-06-13 | Filter tank for low-carbon-nitrogen-ratio chemical sewage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210103710U true CN210103710U (en) | 2020-02-21 |
Family
ID=69564192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920890333.4U Active CN210103710U (en) | 2019-06-13 | 2019-06-13 | Filter tank for low-carbon-nitrogen-ratio chemical sewage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210103710U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104909A (en) * | 2019-06-13 | 2019-08-09 | 江西挺进环保科技有限公司 | A kind of filter tank of low ratio of carbon to ammonium chemical engineering sewage and its sewage water treatment method |
-
2019
- 2019-06-13 CN CN201920890333.4U patent/CN210103710U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104909A (en) * | 2019-06-13 | 2019-08-09 | 江西挺进环保科技有限公司 | A kind of filter tank of low ratio of carbon to ammonium chemical engineering sewage and its sewage water treatment method |
| CN110104909B (en) * | 2019-06-13 | 2024-02-02 | 江西挺进环保科技股份有限公司 | Filter tank for low carbon nitrogen ratio chemical wastewater and wastewater treatment method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110171906B (en) | Drainage-type rare earth mine tail water treatment system and treatment process | |
| CN110104909B (en) | Filter tank for low carbon nitrogen ratio chemical wastewater and wastewater treatment method thereof | |
| CN101423297B (en) | Composite vertical current artificial wetland oxygenation system | |
| CN111253012B (en) | Domestic sewage treatment system and treatment process of high-load percolation coupling system | |
| CN201756490U (en) | Continuous-flow sewage low-oxygen short-range denitrification treatment device | |
| CN105540846B (en) | The application method of low carbon source urban sewage improvement UCT autotrophic denitrification dephosphorization apparatus | |
| CN208617622U (en) | A kind of basin-wide rare-earth mining area tail water filtration process coupled system | |
| CN103601341A (en) | SBR (Sequencing Batch Reactor) and SBBR (Sequencing Biofilm Batch Reactor) municipal sewage high-efficiency biological treatment method and device based on anaerobic ammonia oxidation | |
| CN110790382A (en) | Modularized micro-power equipment for treating rural domestic sewage and method thereof | |
| CN103663693B (en) | High-concentration ammonia-nitrogen treatment of Organic Wastewater combination unit and method | |
| CN218910039U (en) | Efficient mud membrane symbiotic denitrification and dephosphorization sewage treatment system | |
| CN105923771B (en) | A kind of self-loopa biological denitrification reactor | |
| CN112678955A (en) | AO-inverted A2Enhanced denitrification sewage treatment system for/O coupling artificial wetland | |
| CN113264641A (en) | Multistage ecological wetland high-efficiency purification system | |
| CN112142258B (en) | Resource and standard treatment method for domestic sewage of villages and towns | |
| CN210103710U (en) | Filter tank for low-carbon-nitrogen-ratio chemical sewage | |
| CN107445304B (en) | Enhanced denitrification method and enhanced denitrification wetland system suitable for subsurface flow constructed wetland | |
| CN207537221U (en) | A kind of railway middle and small stations area low ratio of carbon to ammonium sewage treatment unit | |
| CN104743751A (en) | A/O (anaerobic/aerobiotic) sewage treatment process device and technique thereof | |
| CN111943359B (en) | Artificial wetland coupled with iron ore enhanced denitrification, operation method and application | |
| CN214611770U (en) | AO-inverted A2Enhanced denitrification sewage treatment system for/O coupling artificial wetland | |
| CN211770850U (en) | Rural sewage treatment system of micro-power ecological wetland method | |
| CN113998846A (en) | Efficient carbon adsorption coupled biological nitrogen and phosphorus removal sewage treatment device and method | |
| CN110980956B (en) | Microbial fuel cell coupled constructed wetland U-shaped device and operation method | |
| CN109665632B (en) | Process for rapidly degrading high-concentration eutrophic sewage |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 341000 office building 9-3, No.31 Changzheng Avenue (Ganzhou chamber of Commerce Building), Zhanggong District, Ganzhou City, Jiangxi Province Patentee after: Jiangxi Jinjin Environmental Protection Technology Co.,Ltd. Address before: 341000 office building 9-3, No.31 Changzheng Avenue (Ganzhou chamber of Commerce Building), Zhanggong District, Ganzhou City, Jiangxi Province Patentee before: JIANGXI TEAMGO ECO-ADVANCE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |