CN215627459U - Petrochemical flue gas desulfurization denitration sewage treatment system - Google Patents
Petrochemical flue gas desulfurization denitration sewage treatment system Download PDFInfo
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- CN215627459U CN215627459U CN202122372521.8U CN202122372521U CN215627459U CN 215627459 U CN215627459 U CN 215627459U CN 202122372521 U CN202122372521 U CN 202122372521U CN 215627459 U CN215627459 U CN 215627459U
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Abstract
The utility model belongs to the technical field of petrochemical industry flue gas desulfurization and denitrification sewage treatment, and particularly relates to a petrochemical industry flue gas desulfurization and denitrification sewage treatment system, which comprises: the device comprises a mixing sedimentation tank, a comprehensive adjusting tank, an anaerobic treatment tower, a hydrolysis acidification tank, a biological contact oxidation tank, an impurity removal device and a clean water tank; the comprehensive adjusting tank is connected with the water discharge end of the mixing sedimentation tank; the anaerobic treatment tower is connected with the drainage end of the comprehensive adjusting tank, and an internal reflux pump is arranged on the anaerobic treatment tower; the hydrolysis acidification tank is connected with the drainage end of the anaerobic treatment tower; the biological contact oxidation tank is connected with the water discharge end of the hydrolysis acidification tank, and a reflux pump is connected between the biological contact oxidation tank and the hydrolysis acidification tank; can carry out effective processing to the mud that deposits in the sewage, be applicable to and carry out purification treatment to large batch industrial sewage, simultaneously, utilize the anaerobism treating tower and biological contact oxidation pond cooperation to handle sewage, improve treatment effect.
Description
Technical Field
The utility model relates to the technical field of petrochemical flue gas desulfurization and denitrification sewage treatment, in particular to a petrochemical flue gas desulfurization and denitrification sewage treatment system.
Background
The production of petrochemical enterprises adopts boilers to provide steam, and the petroleum processing process adopts a catalytic cracking process to produce light oil, so that the petrochemical enterprises generate a large amount of flue gas rich in sulfur oxides (SOx) and nitrogen oxides (NOx). In order to effectively treat the atmospheric pollutants, petrochemical enterprises remove SOx and NOx in the flue gas and discharge the flue gas after reaching standards by implementing flue gas desulfurization and denitrification engineering. The combination of the wet washing technology (desulfurization) and the ozone oxidation technology (denitration) is a common technical route for petrochemical flue gas desulfurization and denitration.
A petrochemical industry flue gas desulfurization and denitration sewage treatment system is disclosed in a patent number CN201720206927. X. The system comprises a high-pressure reactor, a mixing device, a tail gas absorption device and a biological reaction device which are connected in sequence. The treatment system for the petrochemical flue gas desulfurization and denitrification sewage is used for sewage treatment, and the aim of standard discharge of the flue gas desulfurization and denitrification sewage can be fulfilled.
In petrochemical, flue gas desulfurization denitration's sewage is great in batches, before handling large batch sewage, need collect concentrated sedimentation tank with sewage, and at the in-process that sewage subsides, have a large amount of impurity to fall into the sedimentation tank, collect with granule in the sewage and form sediment mud, above-mentioned processing system is in to sewage treatment in-process, can't carry out effective processing to mud.
SUMMERY OF THE UTILITY MODEL
This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.
The utility model is provided in view of the problems in the above and/or the existing petrochemical industry flue gas desulfurization and denitrification sewage treatment system.
Therefore, the utility model aims to provide a petrochemical industry flue gas desulfurization and denitrification sewage treatment system, which can effectively treat sludge precipitated in sewage, is suitable for purifying large-batch industrial sewage, and can improve the treatment effect by using an anaerobic treatment tower and a biological contact oxidation tank to cooperate to treat the sewage.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
a petrochemical flue gas desulfurization denitration sewage's processing system, it includes:
a mixing sedimentation tank;
the comprehensive adjusting tank is connected with the water discharge end of the mixing sedimentation tank;
the anaerobic treatment tower is connected with the drainage end of the comprehensive adjusting tank, and an internal reflux pump is arranged on the anaerobic treatment tower;
the hydrolysis acidification pool is connected with the drainage end of the anaerobic treatment tower;
the biological contact oxidation tank is connected with the water discharge end of the hydrolysis acidification tank, and a reflux pump is connected between the biological contact oxidation tank and the hydrolysis acidification tank;
the impurity removal device is connected with the water discharge end of the biological contact oxidation pond;
and the clean water tank is connected with the drainage end of the impurity removal device.
As a preferred scheme of the petrochemical industry flue gas desulfurization and denitrification sewage treatment system, the system comprises: the edulcoration device includes edulcoration pond and edulcoration rack, the edulcoration rack sets up at edulcoration pond inner chamber.
As a preferred scheme of the petrochemical industry flue gas desulfurization and denitrification sewage treatment system, the system comprises: the top of one side wall of the impurity removal tank is connected with a water inlet pipe connected with the drainage end of the biological contact oxidation tank, and the bottom of the other side wall of the impurity removal tank is connected with a drain pipe connected with the water inlet end of the clean water tank.
As a preferred scheme of the petrochemical industry flue gas desulfurization and denitrification sewage treatment system, the system comprises: the edulcoration rack includes bottom weeping board and filters the otter board, bottom weeping board is placed in edulcoration pond inner chamber bottom, it evenly fixes at bottom weeping board top to filter the otter board.
As a preferred scheme of the petrochemical industry flue gas desulfurization and denitrification sewage treatment system, the system comprises: and a metal filter screen is arranged between the mixing sedimentation tank and the comprehensive adjusting tank.
Compared with the prior art: the utility model can effectively treat sludge precipitated in sewage, is suitable for purifying large-batch industrial sewage, treats the sewage by matching the anaerobic treatment tower and the biological contact oxidation tank, purifies sludge impurities precipitated in the sewage by the anaerobic treatment tower, further treats the purified sewage by the biological contact oxidation tank, improves the sewage treatment effect, and effectively separates the precipitated sludge from clear water by arranging the impurity removal device behind the biological contact oxidation tank, thereby realizing the recovery of the clear water.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic view of the structure of the impurity removing device of the present invention.
In the figure: 100 mixed sedimentation tanks, 200 comprehensive adjusting tanks, 300 anaerobic treatment towers, 310 internal reflux pumps, 400 hydrolysis acidification tanks, 500 biological contact oxidation tanks, 510 reflux pumps, 600 impurity removal devices, 610 impurity removal tanks, 611 water inlet pipes, 612 water discharge pipes, 620 impurity removal net racks, 621 bottom water leakage plates, 622 filter screen plates and 700 clean water tanks.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The utility model provides a petrochemical industry flue gas desulfurization and denitrification sewage treatment system, which can effectively treat sludge precipitated in sewage, is suitable for purifying large-batch industrial sewage, and can improve the treatment effect by using an anaerobic treatment tower and a biological contact oxidation tank to cooperate with each other, and the treatment system comprises the following components in parts by weight, as shown in the figure 1-2: the system comprises a mixing sedimentation tank 100, a comprehensive adjusting tank 200, an anaerobic treatment tower 300, a hydrolysis acidification tank 400, a biological contact oxidation tank 500, an impurity removal device 600 and a clean water tank 700;
mix sedimentation tank 100, collect the sewage that petrochemical flue gas desulfurization denitration produced and carry out the centralized sedimentation processing in mixing sedimentation tank 100, mix sedimentation tank 100 at the sedimentation in-process, add the precipitation medicament, make the interior granule of mixing sedimentation tank 100 precipitate, collect the in-process at sewage, can attach in pipeline and the impurity entering mixing sedimentation tank 100 in the air, mix with the sediment in mixing sedimentation tank 100 and form the deposit mud that organic matter and inorganic matter mix.
The comprehensive adjusting tank 200 is connected with the drainage end of the mixed sedimentation tank 100, the sewage inside the mixed sedimentation tank 100 after sedimentation enters the comprehensive adjusting tank 200, and aeration mixing is carried out by utilizing an aeration fan, so that the sewage concentration homogenization effect is achieved, and part of COD can be removed.
The anaerobic treatment tower 300 is connected with the drainage end of the comprehensive adjusting tank 200, an internal reflux pump 310 is arranged on the anaerobic treatment tower 300, the sewage treated in the comprehensive adjusting tank 200 enters the anaerobic treatment tower 300, and the anaerobic treatment tower 300 is used for purifying the sewage and the sludge.
The hydrolysis acidification tank 400 is connected with the drainage end of the anaerobic treatment tower 300, so that the biodegradability of the wastewater is improved, and the subsequent aerobic treatment is facilitated.
The biological contact oxidation pond 500 is connected with the water discharge end of the hydrolysis acidification pond 400, a reflux pump 510 is connected between the biological contact oxidation pond 500 and the hydrolysis acidification pond 400, and harmful substances such as ammonia nitrogen, nitrous acid, nitrate and hydrogen sulfide in sewage are removed by using the biological contact oxidation pond 500.
The impurity removal device 600 is connected with the drainage end of the biological contact oxidation tank 500, the treated sewage can be mixed with sludge to flow through the impurity removal device 600, the sludge in the sewage is filtered by the impurity removal device 600, so that clear water flows to the clear water tank 700, and the sludge is remained in the impurity removal device 600;
the impurity removal device 600 comprises an impurity removal tank 610 and an impurity removal net rack 620, the impurity removal net rack 620 is arranged in the inner cavity of the impurity removal tank 610, the top of one side wall of the impurity removal tank 610 is connected with a water inlet pipe 611 connected with the water outlet end of the biological contact oxidation tank 500, the bottom of the impurity removal tank 610 opposite to the other side wall is connected with a water outlet pipe 612 connected with the water inlet end of the clean water tank 700, the impurity removal net rack 620 comprises a bottom water leakage plate 621 and a filter screen plate 622, the bottom water leakage plate 621 is arranged at the bottom of the inner cavity of the impurity removal tank 610, and the filter screen plate 622 is uniformly fixed at the top of the bottom water leakage plate 621;
in the sewage of biological contact oxidation pond 500 drainage end passed through inlet tube 611 entering edulcoration device 600, filter the mud in the sewage through edulcoration rack 620, the clear water after the filtration passes through drain pipe 612 and gets into clean water basin 700, and mud is stayed on edulcoration rack 620, takes out edulcoration rack 620, handles mud.
The clean water tank 700 is connected with the drainage end of the impurity removal device 600 and is used for containing the treated clean water.
When the device is used specifically, the mixed sedimentation tank 100 sediments impurities attached to sewage and sewage, the settled sewage enters the comprehensive regulating tank 200, the aeration fan is utilized to perform aeration mixing to achieve the effect of sewage concentration homogenization and remove part of COD, the sewage treated in the comprehensive regulating tank 200 enters the anaerobic treatment tower 300, the anaerobic treatment tower 300 is utilized to purify the sewage and sludge, the sewage treated in the anaerobic treatment tower 300 enters the hydrolysis acidification tank 400 to improve the biodegradability of the wastewater so as to be beneficial to subsequent aerobic treatment, then the biological contact oxidation tank 500 is utilized to remove harmful substances such as ammonia nitrogen, nitrous acid, nitrate and hydrogen sulfide in the sewage, the finally treated sewage can be mixed with sludge to flow through the impurity removal device 600, the sludge in the sewage is filtered through the impurity removal device 600, and the clean water flows to the clean water tank 700, the sludge is left in the trash removal device 600.
While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the disclosed embodiments of the utility model may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.
Claims (5)
1. The utility model provides a processing system of petrochemical flue gas desulfurization denitration sewage which characterized in that includes:
a mixing and settling tank (100);
the comprehensive adjusting tank (200) is connected with the water discharging end of the mixed sedimentation tank (100);
the anaerobic treatment tower (300) is connected with the drainage end of the comprehensive adjusting tank (200), and an internal reflux pump (310) is arranged on the anaerobic treatment tower (300);
the hydrolysis acidification tank (400) is connected with the drainage end of the anaerobic treatment tower (300);
the biological contact oxidation tank (500) is connected with the water discharge end of the hydrolysis acidification tank (400), and a reflux pump (510) is connected between the biological contact oxidation tank (500) and the hydrolysis acidification tank (400);
the impurity removal device (600) is connected with the drainage end of the biological contact oxidation pond (500);
and the clean water tank (700) is connected with the water discharging end of the impurity removing device (600).
2. The petrochemical industry flue gas desulfurization denitration sewage treatment system of claim 1, wherein the edulcoration device (600) includes edulcoration pond (610) and edulcoration rack (620), edulcoration rack (620) sets up in edulcoration pond (610) inner chamber.
3. The petrochemical industry flue gas desulfurization and denitrification sewage treatment system according to claim 2, wherein a water inlet pipe (611) connected with a water outlet end of the biological contact oxidation tank (500) is connected to the top of one side wall of the impurity removing tank (610), and a water outlet pipe (612) connected with a water inlet end of the clean water tank (700) is connected to the bottom of the other side wall of the impurity removing tank (610).
4. The petrochemical industry flue gas desulfurization denitration sewage treatment system of claim 2, wherein the edulcoration rack (620) includes bottom weeping board (621) and filter screen (622), bottom weeping board (621) is placed at edulcoration pond (610) inner chamber bottom, filter screen (622) is evenly fixed at bottom weeping board (621) top.
5. The petrochemical industry flue gas desulfurization and denitrification sewage treatment system according to claim 1, wherein a metal filter screen is arranged between the mixing sedimentation tank (100) and the comprehensive adjusting tank (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122372521.8U CN215627459U (en) | 2021-09-26 | 2021-09-26 | Petrochemical flue gas desulfurization denitration sewage treatment system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122372521.8U CN215627459U (en) | 2021-09-26 | 2021-09-26 | Petrochemical flue gas desulfurization denitration sewage treatment system |
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| CN215627459U true CN215627459U (en) | 2022-01-25 |
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| CN202122372521.8U Active CN215627459U (en) | 2021-09-26 | 2021-09-26 | Petrochemical flue gas desulfurization denitration sewage treatment system |
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- 2021-09-26 CN CN202122372521.8U patent/CN215627459U/en active Active
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