CN105481210A - Combined sewage denitrification process and device having automatic cyclic flowing function - Google Patents
Combined sewage denitrification process and device having automatic cyclic flowing function Download PDFInfo
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- CN105481210A CN105481210A CN201610106212.7A CN201610106212A CN105481210A CN 105481210 A CN105481210 A CN 105481210A CN 201610106212 A CN201610106212 A CN 201610106212A CN 105481210 A CN105481210 A CN 105481210A
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/4608—Treatment of water, waste water, or sewage by electrochemical methods using electrical discharges
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
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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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention provides a combined sewage denitrification process and device having an automatic cyclic flowing function. The combined sewage denitrification process comprises the steps that (a) sewage aeration, (b) automatic sewage circulation, (c) organic matter consumption, (d) nitrosation reaction, (e) anaerobic ammonia oxidation reaction, (f) electrochemical reduction reaction and (g) re-oxygenating. The sewage denitrification device comprises an aeration column, a reaction column, an inflow pipe, a backflow pipe and an aeration head and is characterized in that the two ends of the inflow pipe are respectively communicated with the top of the aeration column and the bottom of the reaction column, a sludge layer and a packing layer are arranged in the reaction column, a heterotrophic bacterial colony, a nitrosobacteria colony and an anaerobic ammonium oxidation bacterium colony exist in the sludge layer, and the packing layer consists of reduced scrap iron. The process and device can completely remove a nitrogen element in sewage through nitrous-anaerobic ammonia oxidation cyclic process and scrap iron reduction reaction, meanwhile achieve automatic cyclic flowing of a water body and have the advantages of adopting few mechanical devices and being simple in flow, low in energy consumption and remarkable in beneficial effect.
Description
Technical field
The present invention relates to sewage water denitrification combination process and the device of the flowing of a kind of automated cycle, in particular, particularly relate to a kind of process combination by aeration aerating, nitrosation-anaerobic ammoxidation denitrogenation, electrochemical reducting reaction, and the technique that nitrogen element in sewage is removed completely of the realization with water body automated cycle function and device.
Background technology
Nitrogenous source pollutent in water body is the one of the main reasons of water environment pollution, and they mainly exist with ammonia, nitrate salts.Thus, in sewage, nitrogen class material is always the emphasis removal object of environmental worker.Until today, traditional method is denitrification, and emerging technique is Anammox method.Traditional minimizing technology, needs the input of great energy consumption and chemical, not only complex process, and costly, is not more suitable in the limited area of economic capability.And general Anammox method, about 85% is only had to the highest clearance of theory of nitrogen element, still nitrogen element cannot be removed completely.Remain in water body and there is the eutrophication that still can cause water body with the form of nitrate.
When nitrogenous effluent or the sewage of little water yield high density, the sludge-digestion liquid, coking gasification wastewater, small towns low discharge sewage etc. of such as municipal sewage plant, the shortcoming of two kinds of above methods is more remarkable.On the one hand, because digestion liquid measure is little, concentration large, the complicated denitrogenation facility of flow process is very uneconomical, cannot reach the object of complete denitrogenation simultaneously.For above present situation, the present invention is intended to invent that a kind of mechanical means is few, flow process is simple, energy consumption is little, and the technique that nitrogen dvielement can be removed completely or method.
Summary of the invention
The present invention, in order to overcome the shortcoming of above-mentioned technical problem, provides sewage water denitrification combination process and the device of a kind of automated cycle flowing.
The sewage water denitrification combination process of automated cycle flowing of the present invention, its special feature is, is realized by following steps:
A). the aeration of sewage, passes into air in sewage to be clean, realizes the aeration to sewage, to make to dissolve saturated oxygen in sewage;
B). passing into of sewage, sewage after dissolved oxygen is passed into the bottom of reaction column, sludge blanket and packing layer is distributed with from the bottom to top in reaction column, be disposed with heterotrophic bacterium bacterium colony, nitrococcus bacterium colony, anaerobic ammonia oxidizing bacteria bacterium colony in sludge blanket from the bottom to top, packing layer forms by reducing iron filings;
C). organic consumption, containing oxygen sewage first through heterotrophic bacterium bacterium colony, decompose the gas chromatography in sewage by heterotrophic bacterium, realize organic removal in sewage;
D). nitrosation reaction, effluent stream is in the process of nitrococcus bacterium colony, and the ammonia nitrogen in sewage take dissolved oxygen as electron acceptor(EA), is nitrite nitrogen, and consumes dissolved oxygen by the nitrosation process of nitrococcus by the part mineralized nitrogen in sewage;
E). Anammox reacts, and effluent stream is when Anammox bacterium colony, and the most of dissolved oxygen in sewage is consumed, by the anaerobic ammonium oxidation process of anaerobic ammonia oxidizing bacteria, residue ammonia nitrogen and nitrite nitrogen is converted into nitrogen and part nitre nitrogen simultaneously;
F). electrochemical reducting reaction, sewage finally flows through packing layer, in packing layer reduced iron effect under, in sewage, remaining nitre nitrogen is reduced to again ammonia nitrogen or nitrite nitrogen, to remove in next circularly purifying process;
G). oxygenation and circulation again, again oxygenation is carried out to the water body flowed out by reaction column top, again the water body after oxygenation passes in reaction column after mixing with the sewage entered first, realizes the circularly purifying of sewage, meets the demands to make the nitrogen element clearance in sewage.
The device of the sewage water denitrification combination process for automated cycle flowing of the present invention, comprise aeration post, reaction column, inflow pipe, return line and aeration head, the inside of aeration post and reaction column is cavity, and the top of aeration post is provided with water-in, for injecting sewage to be clean; Aeration head is arranged at the bottom of aeration post internal cavities, for passing into air, to make to dissolve saturated oxygen in sewage to be clean; Its special feature is: the two ends of inflow pipe communicate with the top of aeration post, the bottom of reaction column respectively, enter from the bottom of reaction column to make the sewage in aeration post; Sludge blanket, packing layer is disposed with from the bottom to top in reaction column, heterotrophic bacterium bacterium colony, nitrococcus bacterium colony, anaerobic ammonia oxidizing bacteria bacterium colony is distributed with from the bottom to top in sludge blanket, to carry out consumption organism, nitrosification, Anammox reaction respectively, packing layer forms by reducing iron filings, so that nitre nitrogen is reduced to ammonia nitrogen or nitrite nitrogen, realize the removal of ammonia nitrogen in sewage; The two ends of return line communicate with the top of reaction column, the bottom of aeration post respectively, to realize cyclic aeration and the purification of sewage.
The device of the sewage water denitrification combination process for automated cycle flowing of the present invention, in described reaction column, the below of sludge blanket is provided with supporting layer, and supporting layer realizes the carrying of sludge blanket and is evenly distributed on the transverse section of reaction column by the sewage entered by inflow pipe; The below of described packing layer is provided with the separate layer carried it.
The device of the sewage water denitrification combination process for automated cycle flowing of the present invention, the equal opening in top of described aeration post and reaction column, to make the oxygen in sewage solubilized air, reduces aeration rate.
The device of the sewage water denitrification combination process for automated cycle flowing of the present invention, the bottom of described aeration post offers the water outlet for being discharged by sewage complete for purification.
The device of the sewage water denitrification combination process for automated cycle flowing of the present invention, under the aeration effect of the aeration head in aeration column bottom, make the density of water body in aeration post be less than the density of water body in reaction column, and then make the water body in reaction column automatically flow in aeration post by return line; After liquid level in reaction column declines, the water body in aeration post also flows in reaction column automatically, and then achieves the automated cycle flowing of current.
The invention has the beneficial effects as follows: the sewage water denitrification combination process of automated cycle flowing of the present invention and device, after the sewage aeration of denitrogenation processing, pass into the reaction column being disposed with heterotrophic bacterium bacterium colony, nitrococcus bacterium colony, Anammox bacterium colony, iron filings, make heterotrophic bacterium can remove organism in sewage, part mineralized nitrogen in sewage is nitrite nitrogen by nitrosation process by nitrococcus, and residue ammonia nitrogen and nitrite nitrogen are converted into nitrogen and nitre nitrogen by anaerobic ammonium oxidation process by Anammox; Further, being ammonia nitrogen or nitrite nitrogen by nitre nitrogen transformation again by the reduction reaction of iron filings, to remove in next circularly purifying process, through repeatedly circulating, almost achieving removing completely of nitrogen element in sewage.
Meanwhile, by the aeration effect of aeration head in aeration post, make the density of sewage in aeration post be less than the density of sewage in reaction column, the sewage therefore in reaction column flows in aeration post by return line automatically; Along with the decline of liquid level in reaction column, the sewage in aeration post can flow in reaction column again automatically, and then achieves the automated cycle flowing of water body, without the need to setting up other drive units.By aeration post and reaction column being all set to the form of upper end open, making the oxygen in sewage solubilized air, being conducive to reducing aeration rate.Technique of the present invention and device, have that tool equipment is few, flow process is simple, energy consumption is little, the significant advantage of beneficial effect, is suitable for application.
Accompanying drawing explanation
Fig. 1 is of the present invention for the sewage water denitrification combination process of automated cycle flowing and the structure principle chart of device.
In figure: 1 water-in, 2 aeration posts, 3 aeration heads, 4 air-supply duct, 5 water outlets, 6 inflow pipes, 7 reaction columns, 8 supporting layers, 9 sludge blankets, 10 separate layers, 11 packing layers, 12 return lines.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the invention will be further described.
As shown in Figure 1, give of the present invention for the sewage water denitrification combination process of automated cycle flowing and the structure principle chart of device, it is made up of aeration post 2, reaction column 7, inflow pipe 6, return line 12, aeration head 3 and air-supply duct 4, the inside of aeration post 2 and reaction column 7 is cavity, the upper end of aeration post 2 offers water-in 1, and sewage to be clean is entered in aeration post 2 by water-in 1.Aeration head 3 is arranged at the bottom of aeration post 2 internal cavities, and aeration head 3 is connected with air-supply duct 4, for blasting air in aeration post 2, carries out aeration to sewage, makes to dissolve saturated oxygen in sewage.The upper end of inflow pipe 6 communicates with the top of aeration post 2, and the lower end of inflow pipe 6 communicates with the bottom of reaction column 7.The sewage after oxygen injects reaction column 7 bottom by inflow pipe has been dissolved in aeration post 2.
In reaction column 7 internal cavities, be disposed with supporting layer 8, sludge blanket 9, separate layer 10 and packing layer 11 from the bottom to top, supporting layer 8 is positioned at the below of sludge blanket 9, supporting layer 8 is for carrying sludge blanket 9, sludge blanket is avoided to leak for 9 times, and there is water distribution effect, the sewage entered by inflow pipe 6 can be uniformly distributed on the transverse section of reaction column 7 by supporting layer 8.Be distributed with heterotrophic bacterium bacterium colony, nitrococcus bacterium colony, anaerobic ammonia oxidizing bacteria bacterium colony from the bottom to top successively in sludge blanket 9, separate layer 10 is positioned at the top of sludge blanket 9, and its top is packing layer 11, and packing layer 11 is made up of reductibility iron filings; Separate layer 10 realizes the carrying effect to sludge blanket 9, and it, when allowing sewage to pass through, can avoid the iron filings in spice layer 11 to leak down.
First the sewage entered by inflow pipe 6 flow through the heterotrophic bacterium bacterium colony in sludge blanket 9, under the effect of heterotrophic bacterium, can consume the gas chromatography in sewage.Then, the nitrococcus bacterium colony of effluent stream in sludge blanket 9, under the nitrosification of nitrococcus, is nitrite nitrogen by the part mineralized nitrogen in sewage, the ammonia nitrogen in sewage is removed, and consumes the dissolved oxygen in sewage; Then, the anaerobic ammonia oxidizing bacteria bacterium colony of effluent stream in sludge blanket 9, carries out Anammox under the effect of anaerobic ammonia oxidizing bacteria, the ammonia nitrogen in sewage and nitrite nitrogen is converted into nitrogen and nitre nitrogen.Nitre nitrogen is rich in nitrosation reaction, Anammox reaction sewage, last effluent stream through packing layer 11, in packing layer 11 reductibility iron filings effect under, be ammonia nitrogen or nitrite nitrogen by the nitre nitrogen transformation in sewage, there is the stripping of part ferro element simultaneously, achieve the removal of nitre nitrogen.
The upper end of shown return line 12 communicates with the top of reaction column 7, the lower end of return line 12 communicates with the bottom of aeration post 2, due to aeration head 3 constantly aeration effect, aeration head 3 blasts the air of micro-bubble form in sewage, and the water body global density in aeration post 3 is reduced; Equal height position, hydraulic pressure in aeration post 2 is less than the hydraulic pressure in reaction column 7 and return line 12, particularly the base pressure difference of aeration post 2 is maximum, therefore, the sewage of reaction 7, capital can turn back to aeration post 2 by the return line 12 being full of sewage, thus defines the automated cycle of current between two cylinders.Be back to the water body in aeration post 2 through return line 12, oxygenation again in aeration post 2, and in inflow pipe 6 to reaction column 7, carry out further denitrogenation with after the new sewage mixing flowed into.Through repeatedly circulating, almost achieve removing completely of nitrogen element in sewage.
The bottom of aeration post 2 offers water outlet 5, for discharging the water body after denitrogenation.The equal opening in upper end of shown aeration post 2 and reaction column 7, makes the oxygen in sewage solubilized air, is conducive to reducing aeration rate.
Because the maximum dissolved oxygen of water is about 10mg/l, can only oxidized portion ammonia nitrogen be nitrite nitrogen for denitrogenation, therefore, the complete denitrogenation of sewage needs sewage repeatedly flow circuit in aeration post and reaction column, through oxygenation-denitrification process repeatedly, until ammonia nitrogen is completely converted; Simultaneously, due to microorganism and nitrogen element reaction process needed for electron acceptor(EA) can only be provided by the air on aeration and surface, aeration intensity is controlled by aeration head 3 and air-supply duct 4, realize the appropriate oxygenation of processed sewage and the accurate supply to dissolved oxygen needed for Microbial denitrogenation, the inefficiency avoiding aeration excessively to cause unnecessary energy consumption and oxygenation deficiency causing.
Reduced iron in packing layer 11 has the ability nitre nitrogen in water and nitrite nitrogen being reduced to nitrite nitrogen and ammonia nitrogen, therefore in the sewage repeatedly processed, does not almost have nitre nitrogen, and ammonia nitrogen is removed by the mode being all converted into nitrogen; The ferro element of self can be consumed simultaneously, thus, needs to add iron filings when iron filings totally; Because the ferro element consumed is dissolved in sewage with ionic state, and can arrive sludge blanket through circulation, be conducive to microorganism by the growth of the katalysis promotion self of ferro element and activity.
In the present invention, aeration post 2 uses pipeline to be communicated with reaction column 7, the hydraulic pressure that bubble in aeration post 2 causes reduces, make sewage flow into reaction column 7 by inflow pipe 6 from aeration post 2, then return aeration post 2 by return line 12, realize the automatic flowing circulation of sewage between aeration post 2 and reaction column 7.Electron acceptor(EA) necessary in denitrification process is provided to the mode of water inlet and recirculation water oxygenation owing to using---oxygen, to the control of aeration rate, realizes the accurate supply of electron acceptor(EA), for the biochemical reaction in sludge blanket provides stable condition.There is by reduced iron ability further that nitre nitrogen is reduced to ammonia nitrogen and nitrite nitrogen, realize the removal completely of nitrogen element.
Claims (6)
1. a sewage water denitrification combination process for automated cycle flowing, be is characterized in that, realized by following steps:
A). the aeration of sewage, passes into air in sewage to be clean, realizes the aeration to sewage, to make to dissolve saturated oxygen in sewage;
B). passing into of sewage, sewage after dissolved oxygen is passed into the bottom of reaction column, sludge blanket and packing layer is distributed with from the bottom to top in reaction column, be disposed with heterotrophic bacterium bacterium colony, nitrococcus bacterium colony, anaerobic ammonia oxidizing bacteria bacterium colony in sludge blanket from the bottom to top, packing layer forms by reducing iron filings;
C). organic consumption, containing oxygen sewage first through heterotrophic bacterium bacterium colony, decompose the gas chromatography in sewage by heterotrophic bacterium, realize organic removal in sewage;
D). nitrosation reaction, effluent stream is in the process of nitrococcus bacterium colony, and the ammonia nitrogen in sewage take dissolved oxygen as electron acceptor(EA), is nitrite nitrogen, and consumes dissolved oxygen by the nitrosation process of nitrococcus by the part mineralized nitrogen in sewage;
E). Anammox reacts, and effluent stream is when Anammox bacterium colony, and the most of dissolved oxygen in sewage is consumed, by the anaerobic ammonium oxidation process of anaerobic ammonia oxidizing bacteria, residue ammonia nitrogen and nitrite nitrogen is converted into nitrogen and part nitre nitrogen simultaneously;
F). electrochemical reducting reaction, sewage finally flows through packing layer, in packing layer reduced iron effect under, in sewage, remaining nitre nitrogen is reduced to again ammonia nitrogen or nitrite nitrogen, to remove in next circularly purifying process;
G). oxygenation and circulation again, again oxygenation is carried out to the water body flowed out by reaction column top, again the water body after oxygenation passes in reaction column after mixing with the sewage entered first, realizes the circularly purifying of sewage, meets the demands to make the nitrogen element clearance in sewage.
2. the device for the sewage water denitrification combination process of automated cycle flowing, comprise aeration post (2), reaction column (7), inflow pipe (6), return line (12) and aeration head (3), the inside of aeration post and reaction column is cavity, the top of aeration post is provided with water-in (1), for injecting sewage to be clean; Aeration head is arranged at the bottom of aeration post internal cavities, for passing into air, to make to dissolve saturated oxygen in sewage to be clean; It is characterized in that: the two ends of inflow pipe communicate with the top of aeration post, the bottom of reaction column respectively, enter from the bottom of reaction column to make the sewage in aeration post; Sludge blanket (9), packing layer (11) is disposed with from the bottom to top in reaction column, heterotrophic bacterium bacterium colony, nitrococcus bacterium colony, anaerobic ammonia oxidizing bacteria bacterium colony is distributed with from the bottom to top in sludge blanket, to carry out consumption organism, nitrosification, Anammox reaction respectively, packing layer forms by reducing iron filings, so that nitre nitrogen is reduced to ammonia nitrogen or nitrite nitrogen, realize the removal of ammonia nitrogen in sewage; The two ends of return line communicate with the top of reaction column, the bottom of aeration post respectively, to realize cyclic aeration and the purification of sewage.
3. the device of the sewage water denitrification combination process for automated cycle flowing according to claim 2, it is characterized in that: the below of sludge blanket (9) is provided with supporting layer (8) in described reaction column (7), supporting layer realizes the carrying of sludge blanket and is evenly distributed on the transverse section of reaction column by the sewage entered by inflow pipe; The below of described packing layer (11) is provided with its separate layer carried (10).
4. the device of the sewage water denitrification combination process for automated cycle flowing according to Claims 2 or 3, is characterized in that: the equal opening in top of described aeration post (2) and reaction column (7), to make the oxygen in sewage solubilized air, reduces aeration rate.
5. the device of the sewage water denitrification combination process for automated cycle flowing according to Claims 2 or 3, is characterized in that: the bottom of described aeration post (2) offers the water outlet for being discharged by sewage complete for purification.
6. the device of the sewage water denitrification combination process for automated cycle flowing according to Claims 2 or 3, it is characterized in that: under the aeration effect of the aeration head (3) of aeration post (2) bottom, make the density of water body in aeration post be less than the density of water body in reaction column (7), and then the water body in reaction column is flowed in aeration post automatically by return line (12); After liquid level in reaction column declines, the water body in aeration post also flows in reaction column automatically, and then achieves the automated cycle flowing of current.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235559A (en) * | 2017-07-12 | 2017-10-10 | 北京化工大学 | The synchronization denitrification apparatus and method of a kind of sewage automatic cycle flowing |
| CN107381808A (en) * | 2017-07-12 | 2017-11-24 | 北京化工大学 | The integrated high-efficiency nitrogen rejection facility and method of a kind of sewage automatic cycle |
| CN111517588A (en) * | 2020-06-01 | 2020-08-11 | 北京工业大学 | Device and method for treating oxidized nitrogen wastewater by using ferroalloy in combination with anaerobic ammonium oxidation bacteria |
| CN112320954A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Split aeration combined tower and method for treating high-concentration organic and/or nitrogen-containing wastewater |
| CN112320952A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Split aeration upflow type aerobic granular sludge bed and sewage treatment process |
| CN112320953A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Separate aeration self-circulation two-stage denitrification integrated sewage treatment equipment and method |
| CN112320935A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Independent aeration combined tower and method for treating organic wastewater |
| CN112321093A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Separate aeration upflow aerobic granular sludge integrated sewage treatment equipment and method |
| WO2022100180A1 (en) * | 2020-11-13 | 2022-05-19 | 山东泰山自迩环保科技有限公司 | Aeration combination tower and method for treating organic wastewater |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107235559A (en) * | 2017-07-12 | 2017-10-10 | 北京化工大学 | The synchronization denitrification apparatus and method of a kind of sewage automatic cycle flowing |
| CN107381808A (en) * | 2017-07-12 | 2017-11-24 | 北京化工大学 | The integrated high-efficiency nitrogen rejection facility and method of a kind of sewage automatic cycle |
| CN107381808B (en) * | 2017-07-12 | 2020-09-22 | 北京工业大学 | Integrated efficient denitrification device and method for automatic sewage circulation |
| CN111517588A (en) * | 2020-06-01 | 2020-08-11 | 北京工业大学 | Device and method for treating oxidized nitrogen wastewater by using ferroalloy in combination with anaerobic ammonium oxidation bacteria |
| CN112320954A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Split aeration combined tower and method for treating high-concentration organic and/or nitrogen-containing wastewater |
| CN112320952A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Split aeration upflow type aerobic granular sludge bed and sewage treatment process |
| CN112320953A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Separate aeration self-circulation two-stage denitrification integrated sewage treatment equipment and method |
| CN112320935A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Independent aeration combined tower and method for treating organic wastewater |
| CN112321093A (en) * | 2020-11-13 | 2021-02-05 | 山东泰山自迩环保科技有限公司 | Separate aeration upflow aerobic granular sludge integrated sewage treatment equipment and method |
| WO2022100180A1 (en) * | 2020-11-13 | 2022-05-19 | 山东泰山自迩环保科技有限公司 | Aeration combination tower and method for treating organic wastewater |
| CN112320952B (en) * | 2020-11-13 | 2023-11-21 | 山东泰山自迩环保科技有限公司 | Separated aeration up-flow type aerobic granular sludge bed and sewage treatment process |
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Effective date of registration: 20220909 Address after: 100124 No. 100 Chaoyang District Ping Tian Park, Beijing Patentee after: Beijing University of Technology Address before: 100029, No. 15 East Third Ring Road, Chaoyang District, Beijing Patentee before: BEIJING University OF CHEMICAL TECHNOLOGY |