CN115403166A - Oxygen increasing device and oxygen increasing method for plateau environment sewage treatment - Google Patents
Oxygen increasing device and oxygen increasing method for plateau environment sewage treatment Download PDFInfo
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- CN115403166A CN115403166A CN202211125066.4A CN202211125066A CN115403166A CN 115403166 A CN115403166 A CN 115403166A CN 202211125066 A CN202211125066 A CN 202211125066A CN 115403166 A CN115403166 A CN 115403166A
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- 239000010865 sewage Substances 0.000 title claims abstract description 93
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 89
- 239000001301 oxygen Substances 0.000 title claims abstract description 89
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000001965 increasing effect Effects 0.000 title claims description 30
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 113
- 238000006213 oxygenation reaction Methods 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 48
- 239000000243 solution Substances 0.000 claims description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000002131 composite material Substances 0.000 claims description 29
- 230000001105 regulatory effect Effects 0.000 claims description 23
- 239000003814 drug Substances 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 14
- 239000011550 stock solution Substances 0.000 claims description 9
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 239000003153 chemical reaction reagent Substances 0.000 claims 2
- 150000001875 compounds Chemical class 0.000 abstract description 10
- 238000006243 chemical reaction Methods 0.000 abstract description 6
- 241000233866 Fungi Species 0.000 abstract 1
- 239000010802 sludge Substances 0.000 description 10
- 239000004343 Calcium peroxide Substances 0.000 description 8
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 description 8
- 235000019402 calcium peroxide Nutrition 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 239000012895 dilution Substances 0.000 description 5
- 238000010790 dilution Methods 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 5
- 241001148470 aerobic bacillus Species 0.000 description 4
- 238000005273 aeration Methods 0.000 description 3
- QOSATHPSBFQAML-UHFFFAOYSA-N hydrogen peroxide;hydrate Chemical compound O.OO QOSATHPSBFQAML-UHFFFAOYSA-N 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical compound [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000012840 feeding operation Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 229940045872 sodium percarbonate Drugs 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
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Classifications
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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
- C02F7/00—Aeration of stretches of water
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- 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
- C02F2101/30—Organic compounds
-
- 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)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, and discloses a plateau environment sewage treatment oxygenation device and an oxygenation method. Put into the equalizing basin with compound solution of hydrogen peroxide according to aquatic dissolved oxygen demand concentration is accurate, and compound solution of hydrogen peroxide takes place chemical reaction in aqueous and slowly releases oxygen, has fully satisfied the demand of good oxygen fungus to oxygen in the sewage for mud activity becomes strong.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to an oxygen increasing device and an oxygen increasing method for plateau environment sewage treatment.
Background
In the sewage treatment process, the aerobic bacteria need to contain sufficient dissolved oxygen when decomposing organic matters, however, in the plateau environment, the content of the dissolved oxygen in the sewage is low, so that the activity of sludge in the sewage treatment device is poor, and the sewage treatment efficiency is low. At present, two methods for improving the standard reaching rate of effluent in a plateau environment are available: firstly, the sludge amount is increased, and secondly, the dissolved oxygen content in water is artificially increased. The working efficiency of the activated sludge can be improved by increasing the sludge amount, but the defect is that the activated sludge of the same kind of domesticated sewage needs to be added continuously; the manual increase of the dissolved oxygen content in water mainly uses the methods of improving the aeration intensity, adding an oxygenation agent and the like, the improvement of the aeration intensity increases the hydraulic retention time, and simultaneously, the energy consumption is large, so the addition of the oxygenation agent (common calcium peroxide, sodium percarbonate and the like) to increase the dissolved oxygen is often adopted.
After the sodium percarbonate is dissolved in water, hydrogen peroxide and sodium carbonate are generated, and hydrogen peroxide molecules are in a strong alkaline microenvironment and can be quickly decomposed into water and oxygen to achieve the oxygen increasing effect. The speed of decomposing and releasing oxygen of calcium peroxide is slightly slower, but most of calcium peroxide sold in the market at present is powdery, and if the powdery calcium peroxide is put into sewage, the powdery calcium peroxide is easy to scatter or hang on the wall to cause medicament loss and air pollution because the medicament feeding port of most sewage treatment equipment is small. Because the solubility of oxygen in water is limited, the specific gravity of the powdery calcium peroxide is small, the powdery calcium peroxide is not easy to quickly sink to the bottom of sewage, the specific surface area of the powder in contact with water is large, the oxygen release is quick, the dissolved oxygen in the sewage can reach a saturated state in a short time when the powdery calcium peroxide is applied to sewage treatment, and most of generated active oxygen quickly escapes to the atmosphere, so that a great deal of waste is caused. Meanwhile, the solubility of the water-soluble polymer is poor, and a solid film is easily formed on the surface of a sewage water body, so that the sewage treatment effect is influenced.
The hydrogen peroxide oxygenation mode is less applied in the sewage treatment industry at present, especially the application in the field of sewage biological treatment is blank, firstly, because of the instability, and secondly, because most of hydrogen peroxide solutions sold in the market have higher concentration, the hydrogen peroxide oxygenation mode can kill flora when being directly applied to sewage treatment, and great influence is caused on the sludge activity; 3. the problems of concentration deviation after dilution or dosage deviation caused by improper operation and the like can also occur in the processes of dilution and dosing; 4. the single dosage of the hydrogen peroxide solution is small, and the problems of frequent dilution of stock solution and operation of dosing exist, so that the method is complicated.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the oxygen increasing device and the oxygen increasing method for plateau environment sewage treatment, which fully meet the requirement of aerobic bacteria in sewage on oxygen and can be applied to emergency oxygen increasing in sewage treatment in similar environments.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows.
The utility model provides a plateau environment sewage treatment oxygenation device, includes dispensing tank and pressure chamber, be provided with suction valve and discharge valve in the pressure chamber, cavity and cavity down are separated into with the inner chamber of pressure chamber to shown discharge valve, it has the fluid-discharge tube to go up cavity intercommunication, cavity side intercommunication has the pump jar down, and the underrun is through the inner chamber intercommunication of pipette and dispensing tank, the last port of pipette sets up the suction valve, be provided with the piston of controlling the activity in the pump jar, the inner chamber intercommunication of dispensing tank has into pencil and inlet tube.
And a screw type stirrer is connected below the suction valve and arranged in an inner cavity of the pipette.
And a liquid level sensor is arranged at the lower end opening of the liquid suction pipe.
The end face of the piston is connected with one end of a plug rod, and the other end of the plug rod penetrates through the pump cylinder to be connected with a dissolved oxygen tester.
The liquid discharge pipe is connected with a medicament blending device, the medicament blending device is connected with a telescopic rotating rod, and a liquid discharge hole and a stirring blade are arranged at the lower end of the telescopic rotating rod.
The distance between the lower port of the pipette and the bottom surface of the inner cavity of the dispensing tank is 2-5cm.
According to the oxygen increasing method of the plateau environment sewage treatment oxygen increasing device, the oxygen content of the adjusting tank is adjusted by the following steps:
s1, arranging an oxygen increasing device in an adjusting tank, and adjusting the length of a telescopic rotating rod according to the volume of the adjusting tank to enable a liquid discharge hole and stirring blades at the lower end of a medicament blending device to be located at the lower one third of the water level of the adjusting tank, so that three-dimensional oxygen increasing is realized;
s2, automatically preparing a medicament-hydrogen peroxide composite solution used in the oxygenation method and device; when the liquid level inductor monitored that the tank that dispenses the medicine was less than pipette lower port, it produced the compound solution of hydrogen peroxide to advance medicine pipe and inlet tube to add common 3% concentration hydrogen peroxide solution and water on the market into the tank that dispenses respectively, and wherein, the concentration ratio of 3% hydrogen peroxide solution and water is 1:2;
s3, automatically adding and starting the hydrogen peroxide composite solution, arranging a dissolved oxygen tester, monitoring that the concentration of dissolved oxygen in the sewage in the regulating tank is lower than 1.4mg/L (concentration value), driving a piston to move left in a pump cylinder by a plug rod, reducing the pressure in a pressure chamber, pressing down a discharge valve to seal the upper cavity and the lower cavity, moving up a suction valve to conduct the upper port of a liquid suction pipe, and sucking the hydrogen peroxide composite solution in a dispensing tank into the lower cavity through the liquid suction pipe; the piston rod drives the piston to move rightwards, the pressure in the pressure bin rises, the suction valve presses downwards to seal the upper port of the liquid suction pipe, the discharge valve moves upwards to conduct the upper cavity and the lower cavity, and the hydrogen peroxide composite solution in the lower cavity flows into the regulating pool through the upper cavity, the liquid discharge pipe and the medicament mixer in sequence;
s4, automatically adding and stopping the hydrogen peroxide composite solution, wherein when a dissolved oxygen tester monitors that the dissolved oxygen concentration of the sewage in the regulating tank reaches 2.8mg/L (concentration value), the piston stops moving;
and S5, slowly decomposing the hydrogen peroxide composite solution put into the regulating tank, reacting to generate oxygen and water, and increasing the concentration of dissolved oxygen in the regulating tank. The reaction equation is: 2h2o2=2h2o + o2 (dissolved oxygen);
s6, the regulating tank sewage after dissolved oxygen lifting can enter a biomembrane reactor or a biochemical tank according to different water treatment methods and enter a subsequent sewage treatment process.
Compared with the prior art, the method has the advantages that:
1. the hydrogen peroxide oxygenation mode is less applied at present, and particularly the application in the field of sewage treatment is blank, and the oxygenation method and the oxygenation device provided by the invention can be applied to biological treatment methods of sewage such as an activated sludge method and a biofilm method.
2. Put into the equalizing basin with compound solution of hydrogen peroxide according to aquatic dissolved oxygen demand concentration is accurate, compound solution of hydrogen peroxide takes place chemical reaction and slowly releases oxygen in aqueous, promote dissolved oxygen concentration in the sewage, aerobic bacteria is to the demand of oxygen in the fully provided sewage, make mud activity grow strong, to some anti biological class organic pollutants, the simple activated sludge process treatment effect is not good, compound solution of hydrogen peroxide through the interpolation has certain oxidability, can remove some biological degradation organic matters difficult in the sewage, reduce the COD value of sewage, improve the biodegradability of sewage, improve the throughput of follow-up sewage, the treatment effeciency to sewage uprises, oxygenation method simple process, easy to carry out, can be applied to the sewage treatment in many similar environments.
3. The dissolved oxygen concentration is a key control parameter of the biological sewage treatment process, and especially has important influence on the growth of microorganisms in the sewage and the removal effect of pollutants in the plateau environment. Solves the difficulties of early debugging and later operation of the biological sewage treatment process in the plateau environment and improves the effluent quality.
4. The hydrogen peroxide is a green environment-friendly oxygenation agent, and the hydrogen peroxide composite solution applied in the invention has mild drug property, is convenient to use, has no residue after decomposition, and cannot cause pollution to the environment.
5. The automatic preparation and feeding of the hydrogen peroxide composite solution solve the problems that the concentration or the feeding amount after dilution is deviated due to improper operation in the processes of diluting and feeding the hydrogen peroxide stock solution, and the problems that the stock solution needs to be diluted frequently and the feeding operation needs to be carried out due to small single feeding amount of the hydrogen peroxide composite solution.
6. The rotatory symmetry of stirring leaf is installed in the place ahead of fluid-discharge tube both sides outage, and compound solution of hydrogen peroxide can produce power when going into sewage through the outage, and the stirring leaf in drive the place ahead is rotatory to make hydrogen peroxide aqueous solution can be even throw with mix to sewage, realize even oxygenation, avoided the oxygenation agent just to put the oxygen end and the inefficiency and the waste that lead to before the surface of sewage or sink to the bottom, can realize the even oxygenation to sewage.
7. The screw type stirrer can ensure that the sucked hydrogen peroxide composite solution is in a fully mixed state.
8. The length can be adjusted according to the size of the regulating reservoir and the water depth through the telescopic rotating rod, the lower end of the telescopic rotating rod is provided with the liquid discharge hole and the stirring blade, the liquid discharge hole and the stirring blade are located at the middle lower part of the sewage of the regulating reservoir, and three-dimensional oxygen aeration is achieved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
The labels in the figure are: 1. medicine inlet pipe, 2, water inlet pipe, 3, dispensing tank, 4, pipette, 5, liquid level sensor, 6, screw type stirrer, 7, pressure bin, 8, suction valve, 9, discharge valve, 10, pump cylinder, 11, piston, 12, stopper rod, 13, dissolved oxygen tester, 14, liquid discharge pipe, 15, medicine mixer, 16, regulating reservoir, 701, upper cavity, 702, lower cavity, 1501, telescopic rotating rod, 1502, liquid discharge hole, 1503 and stirring blade.
Detailed Description
The invention will be further described in detail with reference to the drawings and the detailed description.
Example 1
As shown in fig. 1, the oxygen increasing device for plateau environment sewage treatment comprises a dispensing tank 3 and a pressure chamber 7, wherein a suction valve 8 and a discharge valve 9 are arranged in the pressure chamber 7, the discharge valve 9 divides an inner cavity of the pressure chamber 7 into an upper cavity 701 and a lower cavity 702, the upper cavity 701 is communicated with a liquid discharge pipe 14, the side surface of the lower cavity 702 is communicated with a pump cylinder 10, the bottom surface of the lower cavity is communicated with the inner cavity of the dispensing tank 3 through a liquid suction pipe 4, the upper port of the liquid suction pipe 4 is provided with the suction valve 8, a piston 11 which can move left and right is arranged in the pump cylinder 10, and the inner cavity of the dispensing tank 3 is communicated with a medicine inlet pipe 1 and a water inlet pipe 2.
A screw type stirrer 6 is connected below the suction valve 8, and the screw type stirrer 6 is arranged in the inner cavity of the pipette 4.
The lower end opening of the pipette 4 is provided with a liquid level sensor 5.
The end face of the piston 11 is connected with one end of a plug rod 12, and the other end of the plug rod 12 penetrates through the pump cylinder 10 and is connected with a dissolved oxygen tester 13.
The liquid discharge pipe 14 is connected with a medicament blending device 15, the medicament blending device 15 is connected with a telescopic rotating rod 1501, and the lower end of the telescopic rotating rod 1501 is provided with a liquid discharge hole 1502 and a stirring blade 1503.
The distance between the lower port of the pipette 4 and the bottom surface of the inner cavity of the dispensing tank 3 is 2-5cm.
An oxygenation method of a plateau environment sewage treatment oxygenation device comprises the following steps: the method for adjusting the oxygen content of the adjusting tank 16 comprises the following steps:
s1, arranging an oxygen increasing device in an adjusting tank 16, and adjusting the length of a telescopic rotating rod 1501 according to the volume of the adjusting tank 16 to enable a liquid discharge hole 1502 and a stirring blade 1503 at the lower end of a medicament blending device 15 to be located at the lower third of the water level of the adjusting tank 16, so that three-dimensional oxygen increasing is realized;
s2, automatic preparation of a medicament-hydrogen peroxide composite solution used in the oxygenation method and device. When the liquid level inductor 5 monitors that the liquid level in the dispensing tank 3 is lower than the lower port of the pipette 4, the medicine inlet pipe 1 and the water inlet pipe 2 respectively add 3% concentration hydrogen peroxide solution and water which are common in the market into the dispensing tank 3 to generate hydrogen peroxide composite solution, wherein the concentration ratio of the 3% hydrogen peroxide solution to the water is 1:2;
s3, starting automatic adding of the hydrogen peroxide composite solution, arranging a dissolved oxygen tester 13, monitoring that the concentration of dissolved oxygen in sewage in the regulating tank 16 is lower than 1.4mg/L, driving a piston 11 to move left in a pump cylinder 10 by a plug rod 12, reducing the pressure in a pressure chamber 7, sealing the space between an upper cavity 701 and a lower cavity 702 by pressing down a discharge valve 9, upwards moving an intake valve 8 to conduct an upper port of a liquid suction pipe 4, and sucking the hydrogen peroxide composite solution in the dispensing tank 3 into the lower cavity 702 through the liquid suction pipe 4; the piston rod 12 drives the piston 11 to move right, the pressure in the pressure bin 7 rises, the suction valve 8 presses down to seal the upper end opening of the liquid suction pipe 4, the discharge valve 9 moves up to conduct the upper cavity 701 and the lower cavity 702, and the hydrogen peroxide composite solution in the lower cavity 702 sequentially flows into the regulating reservoir 16 through the upper cavity 701, the liquid discharge pipe 14 and the medicament blending device 15;
s4, automatically adding and stopping the hydrogen peroxide composite solution, and stopping moving the piston 11 when the dissolved oxygen concentration of the sewage in the regulating tank 16 is monitored by a dissolved oxygen tester 13 and reaches 2.8 mg/L;
and S5, slowly decomposing the hydrogen peroxide composite solution put into the regulating tank 16 to react to generate oxygen and water, and increasing the concentration of dissolved oxygen in the regulating tank. The reaction equation is: 2H2O2=2H2O + O2 ═;
s6, the regulating tank sewage after dissolved oxygen lifting can enter a biomembrane reactor or a biochemical tank to participate in a subsequent water treatment process according to different water treatment methods. The hydrogen peroxide oxygenation mode is less applied to the sewage treatment industry at present, and particularly the application in the field of biological sewage treatment is still blank; the oxygenation method and the oxygenation device provided by the invention can be applied to biological treatment methods of sewage such as an activated sludge method, a biofilm method and the like.
According to the accurate compound solution of hydrogen peroxide of putting into equalizing basin 16 with the aquatic dissolved oxygen demand concentration, the compound solution of hydrogen peroxide takes place chemical reaction in aquatic and slowly releases oxygen, promote the dissolved oxygen concentration in the sewage, aerobic bacteria to the demand of oxygen in the sewage has fully been satisfied, make mud activity grow strong, to some anti biological class organic pollutants, simple activated sludge process treatment effect is not good, compound solution of hydrogen peroxide through the interpolation has certain oxidability, can remove partly biological degradation organic matter in the sewage, reduce the COD value of sewage, improve the biodegradability of sewage, improve the throughput of follow-up sewage, the treatment effeciency to sewage uprises, oxygenation method simple process, easy to carry out, can be applied to the sewage treatment in many similar environments.
The dissolved oxygen concentration is a key control parameter of the biological sewage treatment process, and especially has important influence on the growth of microorganisms in the sewage and the removal effect of pollutants in the plateau environment. Solves the difficulties of early debugging and later operation of the biological sewage treatment process in the plateau environment and improves the effluent quality.
The hydrogen peroxide is a green environment-friendly oxygenation agent, and the hydrogen peroxide composite solution applied by the invention has mild drug property, is convenient to use, has no residue after decomposition, and cannot pollute the environment.
The automatic preparation and feeding of the hydrogen peroxide composite solution solve the problems that the concentration or the feeding amount after dilution is deviated due to improper operation in the processes of diluting and feeding the hydrogen peroxide stock solution, and the problems that the stock solution needs to be diluted frequently and the feeding operation needs to be carried out due to small single feeding amount of the hydrogen peroxide composite solution.
Stirring blades 1503 are rotationally and symmetrically arranged in front of liquid discharge holes 1502 on two sides of a liquid discharge pipe 14, and hydrogen peroxide composite solution can generate power when being pumped into sewage through the liquid discharge holes 1502 to drive the stirring blades 1503 in front to rotate, so that the hydrogen peroxide composite solution can be uniformly added and mixed into the sewage, uniform oxygen increasing is realized, low efficiency and waste caused by the fact that oxygen is discharged to the end of the oxygen increasing agent on the surface of the sewage or before the oxygen increasing agent sinks into the bottom end are avoided, and uniform oxygen increasing of the sewage can be realized.
The screw type stirrer 6 can ensure that the sucked hydrogen peroxide composite solution is in a fully mixed state.
The length of the telescopic rotating rod 1501 can be adjusted according to the size and the water depth of the regulating reservoir 16, and the lower end of the telescopic rotating rod is provided with the liquid discharge hole 1502 and the stirring blade 1503, so that the liquid discharge hole 1502 and the stirring blade 1503 are ensured to be positioned at the middle lower part of the sewage of the regulating reservoir 16, and the three-dimensional oxygen increasing is realized.
The experimental case data are compared as follows:
the source of the wastewater is as follows: lake water in a wide area around a university is classified according to COD: n: p =100:5: the wastewater is prepared according to the proportion of 1.
Adjusting the volume of the pool: 5L.
The addition amount of the medicament: 10mL.
The above examples and comparative examples were each measured for the initial values and the values after the implementation of dissolved oxygen, COD and pH. The experiment and detection method comprises the following steps: dividing the prepared sewage into three groups with equal volume, respectively introducing the three groups into a sewage treatment system, measuring initial dissolved oxygen, COD (chemical oxygen demand) and pH value before an experiment, and respectively measuring the pH value of the sewage in an adjusting tank after 10 min of the experiment; after reacting for 1 hour, respectively collecting water samples in a biochemical reaction tank to measure dissolved oxygen; and (4) measuring the COD of the effluent after 8.5 hours of reaction, and after each experiment is finished, standing for 2 hours and then carrying out the next experiment.
The oxygenation method and the oxygenation device provided by the invention have the oxygenation effect and treatment effect on simulated sewage as shown in the table 1.
From the above, the oxygen increasing method and device for plateau environment sewage treatment provided by the invention can effectively increase the concentration of dissolved oxygen in sewage, improve the removal efficiency of COD in sewage, and improve the quality of effluent. The oxygenation method and the oxygenation device provided by the invention have the advantages of simple process and easiness in implementation, can be applied to sewage treatment in various similar environments, and are a convenient and efficient oxygenation method and device.
Example 2
An oxygenation method of a plateau environment sewage treatment oxygenation device comprises the following steps: the method comprises the following steps:
step one, when a liquid level sensor 5 monitors that the liquid level in a dispensing tank 3 is lower than the lower port of a liquid suction pipe 4, a medicine inlet pipe 1 and a water inlet pipe 2 respectively add hydrogen peroxide stock solution and water into the dispensing tank 3 to generate hydrogen peroxide composite solution, wherein the concentration ratio of the hydrogen peroxide stock solution to the water is 1:2;
step two, monitoring that the dissolved oxygen concentration of the sewage in the regulating tank 16 is lower than 1.4mg/L by the dissolved oxygen determinator 13, driving the piston 11 to move leftwards in the pump cylinder 10 by the plug rod 12, reducing the pressure in the pressure chamber 7, pressing down the discharge valve 9 to seal the space between the upper cavity 701 and the lower cavity 702, moving upwards the suction valve 8 to conduct the upper port of the pipette 4, and sucking the hydrogen peroxide composite solution in the dispensing tank 3 into the lower cavity 702 through the pipette 4;
thirdly, the piston 11 is driven by the plug rod 12 to move rightwards, the pressure in the pressure chamber 7 rises, the suction valve 8 presses down to seal the upper port of the liquid suction pipe 4, the discharge valve 9 moves upwards to conduct the upper cavity 701 and the lower cavity 702, and the hydrogen peroxide composite solution in the lower cavity 702 sequentially flows into the regulating reservoir 16 through the upper cavity 701 and the liquid discharge pipe 14;
and step four, stopping moving the piston 11 when the dissolved oxygen concentration of the sewage in the regulating tank 16 is monitored by the dissolved oxygen tester 13 to reach 2.8 mg/L.
The distance between the lower port of the pipette 4 and the bottom surface of the inner cavity of the dispensing tank 3 is 2cm;
the distance between the lower port of the pipette 4 and the bottom surface of the inner cavity of the dispensing tank 3 is 5cm;
the distance between the lower port of the pipette 4 and the bottom surface of the inner cavity of the dispensing tank 3 is 3cm;
the distance between the lower port of the pipette 4 and the bottom surface of the inner cavity of the dispensing tank 3 is 4cm;
the liquid level sensor 5 is of the type: PTFS-IR2187D, the manufacturer is: zhongjiang energy-saving electronics ltd.
The model of the screw type stirrer 6 is as follows: the double leaf type is produced by the following manufacturers: shenzhen Yarun science and technology Limited.
The dissolved oxygen meter 13 is of the type: AZ840P, manufacturer is: a collection of environmental protection group ltd.
In this description, it should be noted that the terms "first", "second", "left end", "right end", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the product conventionally places when used, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
The above-mentioned embodiments only express the specific embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present application. It should be noted that, for those skilled in the art, without departing from the technical idea of the present application, several changes and modifications can be made, which all belong to the protection scope of the present application.
Claims (7)
1. The utility model provides a plateau environment sewage treatment oxygenation device, includes dispensing tank (3) and pressure chamber (7), its characterized in that, be provided with suction valve (8) and discharge valve (9) in pressure chamber (7), cavity (701) and cavity (702) down are separated into with the inner chamber of pressure chamber (7) to shown discharge valve (9), it has fluid-discharge tube (14) to go up cavity (701) intercommunication, cavity (702) side intercommunication has pump cylinder (10) down, and the underrun is through the inner chamber intercommunication of pipette (4) and dispensing tank (3), the last port of pipette (4) sets up suction valve (8), be provided with piston (11) of activity about in pump cylinder (10), the inner chamber intercommunication of dispensing tank (3) has into pencil (1) and inlet tube (2).
2. The oxygen increasing device for plateau environment sewage treatment according to claim 1, wherein a screw type stirrer (6) is connected below the suction valve (8), and the screw type stirrer (6) is arranged in the inner cavity of the suction pipe (4).
3. The plateau environment sewage treatment oxygenation device of claim 1, characterized in that the lower end opening of the pipette (4) is provided with a liquid level sensor (5).
4. The plateau environment sewage treatment oxygenation device of claim 1, characterized in that the end surface of the piston (11) is connected with one end of a plug rod (12), and the other end of the plug rod (12) is connected with a dissolved oxygen meter (13).
5. The plateau environment sewage treatment oxygenation device of claim 1, characterized in that the liquid discharge pipe (14) is connected with a reagent mixer (15), the reagent mixer (15) is connected with a telescopic rotating rod (1501), and the lower end of the telescopic rotating rod (1501) is provided with a liquid discharge hole (1502) and a stirring blade (1503).
6. The plateau environment sewage treatment oxygenation device of claim 1, characterized in that the distance between the lower port of the pipette (4) and the bottom surface of the inner cavity of the dispensing tank (3) is 2-5cm.
7. An oxygen increasing method suitable for the oxygen increasing device for plateau environment sewage treatment as claimed in claim 1, characterized by comprising the following steps:
step one, when a liquid level sensor (5) monitors that the liquid level in a dispensing tank (3) is lower than the lower port of a pipette (4), a medicine inlet pipe (1) and a water inlet pipe (2) respectively add hydrogen peroxide stock solution and water into the dispensing tank (3) to generate hydrogen peroxide composite solution, wherein the concentration ratio of the hydrogen peroxide stock solution to the water is 1:2;
secondly, monitoring that the dissolved oxygen concentration of the sewage in the regulating tank (16) is lower than 1.4mg/L by a dissolved oxygen tester (13), driving a piston (11) to move left in a pump cylinder (10) by a plug rod (12), reducing the pressure in a pressure chamber (7), pressing down a discharge valve (9) to seal the space between an upper cavity (701) and a lower cavity (702), moving up an intake valve (8) to conduct an upper port of a liquid suction pipe (4), and sucking the hydrogen peroxide composite solution in the dispensing tank (3) into the lower cavity (702) through the liquid suction pipe (4);
thirdly, the piston (11) is driven by the plug rod (12) to move rightwards, the pressure in the pressure bin (7) rises, the suction valve (8) presses down to seal the upper port of the liquid suction pipe (4), the discharge valve (9) moves upwards to conduct the upper cavity (701) and the lower cavity (702), and the hydrogen peroxide composite solution in the lower cavity (702) sequentially flows into the regulating tank (16) through the upper cavity (701) and the liquid discharge pipe (14);
and step four, stopping moving the piston (11) when the dissolved oxygen concentration of the sewage in the regulating tank (16) is monitored by the dissolved oxygen tester (13) to reach 2.8 mg/L.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211125066.4A CN115403166A (en) | 2022-09-15 | 2022-09-15 | Oxygen increasing device and oxygen increasing method for plateau environment sewage treatment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211125066.4A CN115403166A (en) | 2022-09-15 | 2022-09-15 | Oxygen increasing device and oxygen increasing method for plateau environment sewage treatment |
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