CN111039407A - Fixed bed baffle plate reactor and application thereof in wastewater treatment - Google Patents
Fixed bed baffle plate reactor and application thereof in wastewater treatment Download PDFInfo
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- CN111039407A CN111039407A CN201911393773.XA CN201911393773A CN111039407A CN 111039407 A CN111039407 A CN 111039407A CN 201911393773 A CN201911393773 A CN 201911393773A CN 111039407 A CN111039407 A CN 111039407A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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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
- C02F2101/30—Organic compounds
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
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- C02F2101/38—Organic compounds containing nitrogen
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
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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
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
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Abstract
The invention provides a fixed bed baffle plate reactor and application thereof in wastewater treatment, belonging to the technical field of wastewater treatment, wherein the fixed bed baffle plate reactor comprises an aerobic chamber and an anaerobic chamber which are communicated; the aerobic chamber is communicated with the anaerobic chamber through a hole; a plurality of parallel inclined baffle plates are arranged on the top surface and the bottom surface of the aerobic chamber in a staggered manner; a plurality of vertical baffle plates which are parallel to each other are arranged on the top surface and the bottom surface in the anaerobic chamber in a staggered manner; the vertical baffle plate arranged on the top surface is vertical to the top surface; the vertical baffle plate arranged on the bottom surface is vertical to the bottom surface; a carbon fiber membrane is fixed on the baffle plate; the aerobic chamber is provided with a water inlet, and the anaerobic chamber is provided with a water outlet and a sludge outlet. The fixed bed baffle plate reactor can effectively degrade low-concentration organic pollutants such as nitrogen, phosphorus and the like in the culture tail water.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a fixed bed baffle plate reactor and application thereof in wastewater treatment.
Background
China is the first aquaculture big country in the world and accounts for about 70% of the total aquaculture amount in the world, but for years, the aquaculture industry in China still mainly adopts extensive and even plunder type production modes. With the increasing demand of aquatic products, many breeding enterprises increase the breeding density and put artificial feed, aquatic product drugs and the like in large scale under the drive of huge benefits, so that the pollution of the breeding water body is serious, and especially nitrogen and phosphorus elements in the tail water of the breeding are enriched in a large amount. In aquaculture, only about 30% of protein in feed put into water is absorbed and utilized by aquatic animals, most of feed protein is lost into the water again in the form of excrement, residual bait, secretion and the like, so that organic matters containing nitrogen and phosphorus are accumulated in the water, when the organic matters are too much to be completely decomposed by natural microorganisms, water quality is deteriorated, a series of consequences such as water hypoxia, aquatic animal morbidity and even death are caused, the ecological environment is seriously damaged by direct discharge, and therefore, the method has very important practical significance for effectively degrading the content of the organic matters such as nitrogen, phosphorus and the like in aquaculture tail water.
The prior art has the advantages that the operation is stable, the efficiency is high when the breeding tail water containing high-concentration nitrogen and phosphorus is degraded, the fixed bed baffle plate reactor can realize the cyclic utilization of the purified tail water on the basis of the advantages, and the breeding cost can be effectively reduced. On the other hand, the fixed bed baffle reactor has obvious advantages in degrading low-concentration organic matters such as nitrogen, phosphorus and the like in tail water. Taking ammonia nitrogen as an example, high-concentration ammonia nitrogen wastewater is generally converted into low-concentration ammonia nitrogen wastewater for treatment in industry, however, when the ammonia nitrogen concentration is reduced to a certain value, the growth and metabolism of microorganisms are reduced, and the treatment effect is obviously reduced. Therefore, the treatment of the culture tail water with low nitrogen and phosphorus concentration becomes a key link of the practical process.
The prior art is mostly applied to the treatment of the breeding tail water of high-concentration nitrogen and phosphorus, is not beneficial to degrading low-concentration organic pollutants, and does not evaluate the effect of a fixed bed baffle reactor.
Disclosure of Invention
In view of the above, the present invention provides a fixed bed baffled reactor and its application in wastewater treatment; the fixed bed baffle plate reactor can effectively degrade low-concentration organic pollutants such as nitrogen, phosphorus and the like in the aquaculture tail water, and the fixed bed baffle plate reactor takes the carbon fiber biological membrane as a carrier to realize the enrichment of microorganisms and realize the green and effective degradation of the low-concentration organic pollutants such as nitrogen, phosphorus and the like in the aquaculture tail water.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a fixed bed baffle plate reactor, which comprises an aerobic chamber and an anaerobic chamber which are communicated; the aerobic chamber is communicated with the anaerobic chamber through a hole;
a plurality of parallel inclined baffle plates are arranged on the top surface and the bottom surface of the aerobic chamber in a staggered manner, and an acute angle formed between the baffle plate arranged on the top surface and the top surface is 65-70 degrees; an acute angle formed between the baffle plate arranged on the bottom surface and the bottom surface is 65-70 degrees;
a plurality of vertical baffle plates which are parallel to each other are arranged on the top surface and the bottom surface in the anaerobic chamber in a staggered manner; the vertical baffle plate arranged on the top surface is vertical to the top surface; the vertical baffle plate arranged on the bottom surface is vertical to the bottom surface;
a carbon fiber membrane is fixed on the baffle plate;
the aerobic chamber is provided with a water inlet, and the anaerobic chamber is provided with a water outlet and a sludge outlet.
Preferably, a plurality of through holes are formed in the baffle plate, and the carbon fiber membrane is fixedly connected to the baffle plate through the through holes.
Preferably, the diameter of the through hole is 2-4 mm.
Preferably, the thickness of the carbon fiber film is 1-2 mm.
Preferably, the number of the baffle plates in the aerobic chamber is 6-12; the number of the baffle plates in the anaerobic chamber is 6-12.
Preferably, the number of the holes is 2-5; the diameter of the holes is 1-3 cm, and the distance between every two adjacent holes is 8-10 cm.
Preferably, the aerobic chamber and the anaerobic chamber are respectively provided with a plurality of valves.
The invention provides application of the fixed bed baffle plate reactor in wastewater treatment.
Preferably, the method comprises the following steps:
1) the wastewater to be treated enters an aerobic chamber through a water inlet to be subjected to aerobic treatment to obtain wastewater after the aerobic treatment;
2) the wastewater after aerobic treatment flows into an anaerobic chamber through the holes for anaerobic treatment, and then is discharged through a water outlet, and sludge is collected at a sludge outlet;
the temperature of the aerobic treatment is 23-25 ℃, and the pH value of the aerobic treatment is 7-8.5; the dissolved oxygen of the aerobic treatment is 1-2 mg/L;
the temperature of the anaerobic treatment is 23-25 ℃, and the pH value of the anaerobic treatment is 6.5-8.0.
Preferably, the total hydraulic retention time of the fixed bed baffle reactor in the application process is 8-48 h.
The invention has the beneficial effects that: the invention provides a fixed bed baffle plate reactor, which comprises an aerobic chamber and an anaerobic chamber which are communicated; a plurality of parallel inclined baffle plates are arranged on the top surface and the bottom surface of the aerobic chamber in a staggered manner, and a plurality of parallel vertical baffle plates are arranged on the top surface and the bottom surface of the anaerobic chamber in a staggered manner; a carbon fiber membrane is fixed on the baffle plate; the carbon fiber membrane is used as a fixed bed, so that the growth and enrichment of microorganisms are realized, and the low-concentration organic pollutants such as nitrogen, phosphorus and the like in the culture tail water can be effectively degraded; and carrying out nitration reaction on the wastewater in the aerobic chamber, and carrying out denitrification reaction in the anaerobic chamber. By the treatment of the fixed bed baffle reactor provided by the invention, the removal rate of TN and TP in the wastewater can be maintained at 98% and 50%.
Drawings
FIG. 1 is a sectional view of a fixed-bed baffled reactor provided in example 1 of the present invention, wherein the left side is a sectional view taken along the entire reactor and the right side is a sectional view of the joint face of an aerobic chamber and an anaerobic chamber;
FIG. 2 is a top plan view of a fixed bed baffled reactor provided in example 1 of this invention;
FIG. 3 shows the removal rate of TN and TP of wastewater by different hydraulic retention time reactors.
Detailed Description
The invention provides a fixed bed baffle plate reactor, which comprises an aerobic chamber and an anaerobic chamber which are communicated; the aerobic chamber is communicated with the anaerobic chamber through a hole; a plurality of parallel inclined baffle plates are arranged on the top surface and the bottom surface of the aerobic chamber in a staggered manner, and an acute angle formed between the baffle plate arranged on the top surface and the top surface is 65-70 degrees; an acute angle formed between the baffle plate arranged on the bottom surface and the bottom surface is 65-70 degrees; a plurality of vertical baffle plates which are parallel to each other are arranged on the top surface and the bottom surface in the anaerobic chamber in a staggered manner; the vertical baffle plate arranged on the top surface is vertical to the top surface; the vertical baffle plate arranged on the bottom surface is vertical to the bottom surface; a carbon fiber membrane is fixed on the baffle plate; the aerobic chamber is provided with a water inlet, and the anaerobic chamber is provided with a water outlet and a sludge outlet.
In the invention, the fixed bed baffle plate reactor comprises an aerobic chamber and an anaerobic chamber which are communicated. And carrying out nitration reaction on the wastewater in the aerobic chamber, and carrying out denitrification reaction in the anaerobic chamber. In the invention, the aerobic chamber and the anaerobic chamber are communicated through the hole. In the invention, the number of the holes is preferably 2-5, and more preferably 3; the diameter of the hole is preferably 1-3 cm, and more preferably 2 cm; in the invention, the distance between two adjacent holes is preferably 8-10 cm, and more preferably 9 cm; the holes are arranged transversely. The volume of the fixed bed baffle reactor is not particularly limited in the present invention, and is preferably determined according to the specific wastewater treatment needs. In the specific implementation process of the invention, the volume of the fixed bed baffle reactor is 80L; wherein the volume of the aerobic chamber is 40L, and the volume of the anaerobic chamber is 40L. In the invention, the aerobic chamber and the anaerobic chamber are preferably provided with slots for fixing the baffle plate.
In the invention, a plurality of parallel inclined baffle plates are arranged on the top surface and the bottom surface of the aerobic chamber in a staggered manner, and an acute angle formed between the baffle plate arranged on the top surface and the top surface is 65-70 degrees, preferably 70 degrees. In the invention, the number of the aerobic indoor baffles is preferably 6-12, and more preferably 10; in the invention, a plurality of through holes are preferably arranged on the baffle plate, and the carbon fiber membrane is preferably fixedly connected to the baffle plate through the through holes. In the invention, the diameter of the through hole is preferably 2-4 mm, and more preferably 3 mm; in the invention, the thickness of the carbon fiber film is preferably 1-2 mm; the source of the carbon fiber membrane is not particularly limited in the invention, and a commercially available carbon fiber membrane which is conventional in the field can be adopted. The external aeration device is arranged outside the aerobic chamber, the source and specification of the aeration device are not specially limited, and the aeration device can be a conventional aeration device in the field.
In the invention, the aerobic chamber is preferably provided with a plurality of valves; the number of the valves is preferably 4-8, and more preferably 6; the upper part of the aerobic chamber with the valve optimized is provided with 3 valves for taking water samples; the lower part of the aerobic chamber is provided with 3 aerobic chambers for taking mud samples.
In the invention, a plurality of vertical baffle plates which are parallel to each other are arranged on the top surface and the bottom surface in the anaerobic chamber in a staggered manner; the vertical baffle plate arranged on the top surface is vertical to the top surface; the vertical baffle plate arranged on the bottom surface is vertical to the bottom surface. In the present invention, except that the setting direction is different from that of the aerobic chamber, the baffle plate in the anaerobic chamber is consistent with that in the aerobic chamber, and the description is omitted here. In the invention, the anaerobic chamber is provided with a water outlet and a sludge outlet; the water outlet is preferably arranged at the upper part of the anaerobic chamber, and the sludge outlet is preferably arranged at the lower part of the anaerobic chamber. In the invention, the anaerobic chamber is preferably provided with a plurality of valves; the number of the valves is preferably 4-8, and more preferably 6; the upper part of the anaerobic oxygen chamber with the optimized valve is provided with 3 valves for taking water samples; and 3 anaerobic chambers are arranged at the lower part of the anaerobic chamber and used for sampling mud.
In the invention, the baffle plate has the following functions: allowing the membrane of the organisms on the carbon fiber membrane to adhere and grow, thereby enriching the microorganisms; a baffling space is formed in the reactor, and water flow stays for a longer time when passing through the reactor, so that microorganisms on the membrane can fully react with the microorganisms. The baffle plate in the aerobic chamber is designed to be inclined, and has another function of enabling oxygen bubbles to stay on the baffle plate for a longer time so that the biological membrane can be in full contact with oxygen to allow aerobic microorganisms on the membrane to grow.
The invention provides application of the fixed bed baffle plate reactor in wastewater treatment. In the present invention, the application preferably comprises the steps of: 1) the wastewater to be treated enters an aerobic chamber through a water inlet to be subjected to aerobic treatment to obtain wastewater after the aerobic treatment; 2) and the wastewater after aerobic treatment flows into the anaerobic chamber through the holes for anaerobic treatment, and then is discharged through the water outlet, and sludge is collected through the sludge outlet.
In the invention, the wastewater to be treated enters the aerobic chamber through the water inlet to be aerobically treated to obtain the wastewater after the aerobic treatment. In the invention, the wastewater to be treated is preferably ammonia nitrogen wastewater, and the wastewater is preferably fishpond culture tail water. In the invention, the aerobic treatment temperature is preferably 23-25 ℃, and more preferably 24 ℃; the pH value of the aerobic treatment is preferably 7-8.5; the dissolved oxygen of the aerobic treatment is preferably 1-2 mg/L.
In the invention, the wastewater after aerobic treatment flows into the anaerobic chamber through the holes for anaerobic treatment, and then is collected through the water outlet, and sludge is collected through the sludge outlet. After the aerobic treatment, preferably pumping new wastewater into the aerobic chamber by using a peristaltic pump, and moving the wastewater after the aerobic treatment into the anaerobic chamber through the holes under the pushing of the new wastewater; in the invention, the temperature of the anaerobic treatment is preferably 23-25 ℃, and the pH value of the anaerobic treatment is preferably 6.5-8.0.
In the invention, the total hydraulic retention time of the fixed bed baffle reactor in the application process is preferably 8-48 h, more preferably 10-15 h, and most preferably 13 h.
In the present invention, the reactor is preferably subjected to start-up acclimatization before use, and the conditions for the start-up acclimatization are not particularly limited in the present invention, and specific procedures are described in examples.
The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.
Example 1
Manufacturing a reactor: dividing a reactor with the total volume of 80L into a front reaction chamber and a rear reaction chamber, wherein each chamber can contain 40L of water, the middle chambers are connected through 3 holes with the diameter of 2cm, the distance between the holes is 9cm, and the 3 holes are transversely arranged; one end connected with the water inlet is an aerobic chamber, namely a nitrification chamber, and baffle plates in the aerobic chamber are obliquely arranged at an included angle of 70 degrees with the horizontal plane, so that the contact area of the biological membrane and oxygen is increased during aeration; the water outlet is connected with an anaerobic chamber, namely a denitrification chamber, the anaerobic chamber is in a completely closed state in the starting and reaction stages, and baffle plates in the anaerobic chamber are vertically arranged; 6 valves are arranged on the side surface of each chamber, the upper 3 valves are used for taking water samples, and the lower 3 valves are used for taking mud samples; a plurality of round holes with the diameter of 3mm are distributed on the baffle plate, the purchased carbon fiber membrane with the thickness of 1-2mm is bound and fixed on the baffle plate by thin iron wires, and the carbon fiber membrane is fixed on both sides of the baffle plate. The inner walls of the two sides of the reactor are provided with slots, and the rectangular baffle plate is inserted along the slots and fixed in the reactor; the aerobic chamber and the anaerobic chamber are respectively provided with 10 baffle plates (the number of the baffle plates is based on the character description). The structure diagram of the reactor in this embodiment is shown in fig. 1-2, in which 1 is a water inlet, 2 is a lower valve (total 6 for sampling mud), 3 is an aerobic chamber baffle plate, 4 is an upper valve (total 6 for sampling water), 5 is an anaerobic chamber baffle plate, 6 is a water outlet, 7 is a mud outlet, and 8 is two-chamber connecting holes (3).
In the process of applying the reactor to treat wastewater, the temperature is controlled to be 23-25 ℃, the pH value of the aerobic chamber is 7-8.5, the pH value of the anaerobic chamber is 6.5-8, and continuous aeration is carried out on the aerobic zone of the reactor through an external aeration device to maintain the concentration of dissolved oxygen at 1-2 mg/L.
The reactor start-up phase: during the starting period of the reactor, the aerobic chamber and the anaerobic chamber are completely isolated, and a rubber plug is used for plugging a hole between the two chambers; taking back a tail water sample of a specified aquaculture plant, measuring the concentrations of ammonia nitrogen, nitrate nitrogen, total nitrogen and total phosphorus, wherein the concentration of the ammonia nitrogen is 11.562mg/L, the concentration of the nitrate nitrogen is 17.297mg/L, the concentration of the total nitrogen is 29.509mg/L and the concentration of the total phosphorus is 2.056mg/L, and preparing a simulation water sample according to the concentrations; selecting an aquaculture plant nearby to take back activated sludge, measuring that the solid content of the sludge is 21.5%, putting the sludge into a nitrification chamber according to a solid-liquid ratio of 1:4, adding a simulated water sample for dilution, controlling the solid content to be 3.5% -5.0%, putting the sludge into a denitrification chamber according to a solid-liquid ratio of 1:1, adding the simulated water sample for dilution, and controlling the solid content to be 10.0% -11.5%; a direct membrane hanging method is adopted, the carbon fiber biological membrane attached to the baffle plate is statically placed in a reaction chamber, the nitrification chamber continuously aerates, and the denitrification chamber is not opened any more after being closed, so that an absolute anaerobic environment is ensured; after 30 days of acclimation, the degradation rates of ammonia nitrogen and nitrate nitrogen in the wastewater are stably maintained to be more than 90%, and the degradation rate of total phosphorus is maintained to be more than 50%, so that the success of starting the reactor can be judged.
After the start-up is completed, the reactor enters an operation stage, water samples in two chambers do not need to be configured at the same time, a simulation water sample is configured according to the configuration shown in table 1 and is introduced from the aerobic chamber, after the nitration reaction is completed, a new waste water is pumped into the aerobic chamber through an additional peristaltic pump, and the water sample which is processed in the aerobic chamber and generates nitrate nitrogen with a certain concentration is pushed into the anaerobic chamber, so that the denitrification reaction is performed in the anaerobic environment.
TABLE 1 simulated wastewater component concentrations (unit: mg/L)
Obtaining the optimal hydraulic retention time: changing Hydraulic Retention Time (HRT), measuring the degradation rate of the reactor to total nitrogen and total phosphorus in the aquaculture wastewater, comparing the degradation effect, and obtaining the optimal hydraulic retention time. The specific operation is as follows: setting the hydraulic retention time to be 48, 36, 30, 24, 18, 12 and 8 hours in sequence, wherein the hydraulic retention time of the former 1/2 is used for nitration reaction, the hydraulic retention time of the latter 1/2 is used for denitrification reaction, and HRT is shortened in sequence, wherein before HRT is shortened each time, the reactor is ensured to stably run for at least 3 times under the previous HRT condition, namely, the degradation rate is basically maintained unchanged in 3 continuous experiments.
Setting HRT at 24H, introducing the simulated water sample into a nitrification chamber, and taking an initial water sample (H)0) Measuring the concentrations of ammonia nitrogen, nitrate nitrogen, total nitrogen and total phosphorus, continuously aerating, and maintaining the operation of the reactor for 12 hours; after 12H reaction, water sample (H) was taken1) Measuring the concentrations of ammonia nitrogen, nitrate nitrogen, total nitrogen and total phosphorus; standing for 2h until dissolved oxygen in the nitrification chamber is reduced to below 0.2mg/L, pumping a new water sample into the aerobic chamber by using an external peristaltic pump, and pushing the water sample treated in the aerobic chamber into the anaerobic chamber, and taking an initial water sample (Y) from the anaerobic chamber0) Measuring the concentrations of ammonia nitrogen, nitrate nitrogen, total nitrogen and total phosphorus; after 12h denitrification reaction, water sample (Y) was taken1) Measuring the concentrations of ammonia nitrogen, nitrate nitrogen, total nitrogen and total phosphorus; at the moment, the hydraulic retention time is 24 hours, the degradation rates of total nitrogen and total phosphorus are calculated, the experiment is repeated, the degradation rate of total nitrogen is about 99 percent and the degradation rate of total phosphorus is about 50 percent after 3 times of continuous operation, the operation of the reactor is judged to be stable, the data is reliable, the hydraulic retention time can be shortened to 18 hours, and the same experiment is repeated again under the condition.
The experimental results are shown in fig. 3: HRT is 18-48 h, TN and TP removal rate are maintained at 98%, about 50%, TN and TP removal rate are stabilized at 87% and 45% when 12h is reduced, TN and TP removal rate are stabilized at 8h, and TN and TP removal rate are stabilized at 52% and 40%. After HRT rises to 13h, the TN and TP degradation rates rise back to be stabilized at 98% and 44%.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A fixed bed baffle plate reactor is characterized by comprising an aerobic chamber and an anaerobic chamber which are communicated; the aerobic chamber is communicated with the anaerobic chamber through a hole;
a plurality of parallel inclined baffle plates are arranged on the top surface and the bottom surface of the aerobic chamber in a staggered manner, and an acute angle formed between the baffle plate arranged on the top surface and the top surface is 65-70 degrees; an acute angle formed between the baffle plate arranged on the bottom surface and the bottom surface is 65-70 degrees;
a plurality of vertical baffle plates which are parallel to each other are arranged on the top surface and the bottom surface in the anaerobic chamber in a staggered manner; the vertical baffle plate arranged on the top surface is vertical to the top surface; the vertical baffle plate arranged on the bottom surface is vertical to the bottom surface;
a carbon fiber membrane is fixed on the baffle plate;
the aerobic chamber is provided with a water inlet, and the anaerobic chamber is provided with a water outlet and a sludge outlet.
2. A fixed bed baffled reactor as claimed in claim 1 wherein the baffled plate is provided with a plurality of through holes through which the carbon fiber membranes are fixedly attached to the baffled plate.
3. A fixed bed baffled reactor according to claim 2, wherein the diameter of the through holes on the baffled plate is 2 to 4 mm.
4. A fixed bed baffled reactor according to claim 2 or 3, wherein the carbon fiber membrane has a thickness of 1 to 2 mm.
5. A fixed bed baffle reactor as set forth in claim 1, wherein the number of baffles in the aerobic chamber is 6 to 12; the number of the baffle plates in the anaerobic chamber is 6-12.
6. A fixed bed baffled reactor according to claim 1, wherein the number of the holes is 2 to 5; the diameter of the holes is 1-3 cm, and the distance between every two adjacent holes is 8-10 cm.
7. A fixed bed baffled reactor as claimed in claim 1 wherein the aerobic and anaerobic chambers are provided with valves respectively.
8. Use of a fixed bed baffled reactor as claimed in any one of claims 1 to 7 in the treatment of wastewater.
9. Use according to claim 8, characterized in that it comprises the following steps:
1) the wastewater to be treated enters an aerobic chamber through a water inlet to be subjected to aerobic treatment to obtain wastewater after the aerobic treatment;
2) the wastewater after aerobic treatment flows into an anaerobic chamber through the holes for anaerobic treatment, and then is discharged through a water outlet, and sludge is collected at a sludge outlet;
the temperature of the aerobic treatment is 23-25 ℃, and the pH value of the aerobic treatment is 7-8.5; the dissolved oxygen of the aerobic treatment is 1-2 mg/L;
the temperature of the anaerobic treatment is 23-25 ℃, and the pH value of the anaerobic treatment is 6.5-8.0.
10. The use according to claim 9, wherein the fixed bed baffled reactor has a total hydraulic retention time of 8 to 48 hours during use.
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| CN114477443A (en) * | 2022-04-18 | 2022-05-13 | 北京涞澈科技发展有限公司 | Biological frame based inserting plate type baffling anaerobic tank and sewage denitrification method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010247051A (en) * | 2009-04-14 | 2010-11-04 | Fuji Clean Co Ltd | Water treatment apparatus |
| CN202170282U (en) * | 2011-08-22 | 2012-03-21 | 殷衡 | Water immersion biochemical water treatment device |
| CN207002487U (en) * | 2017-06-08 | 2018-02-13 | 南京交通职业技术学院 | A kind of sterilizable sewage-treatment plant |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010247051A (en) * | 2009-04-14 | 2010-11-04 | Fuji Clean Co Ltd | Water treatment apparatus |
| CN202170282U (en) * | 2011-08-22 | 2012-03-21 | 殷衡 | Water immersion biochemical water treatment device |
| CN207002487U (en) * | 2017-06-08 | 2018-02-13 | 南京交通职业技术学院 | A kind of sterilizable sewage-treatment plant |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477443A (en) * | 2022-04-18 | 2022-05-13 | 北京涞澈科技发展有限公司 | Biological frame based inserting plate type baffling anaerobic tank and sewage denitrification method |
| CN114477443B (en) * | 2022-04-18 | 2022-08-05 | 北京涞澈科技发展有限公司 | A plug-in baffled anaerobic tank and sewage denitrification method based on biological framework |
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