CN113184980B - Internal member for reinforcing biochemical mixed mass transfer reaction process of refining wastewater - Google Patents
Internal member for reinforcing biochemical mixed mass transfer reaction process of refining wastewater Download PDFInfo
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- CN113184980B CN113184980B CN202011602718.XA CN202011602718A CN113184980B CN 113184980 B CN113184980 B CN 113184980B CN 202011602718 A CN202011602718 A CN 202011602718A CN 113184980 B CN113184980 B CN 113184980B
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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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1278—Provisions for mixing or aeration of the mixed liquor
- C02F3/1284—Mixing devices
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
- C02F2103/365—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds from petrochemical industry (e.g. refineries)
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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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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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
- C02F2209/22—O2
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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
- C02F2303/00—Specific treatment goals
- C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles
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- 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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- Microbiology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to an inner member for reinforcing biochemical mixed mass transfer reaction process of refined and chemical wastewater, which comprises a barrel body and a water and gas distribution structure, and is characterized in that the water and gas distribution inner member mainly comprises a transmission inner member and a mass transfer inner member. The transmission inner member consists of a hydraulic lifting device, a central circulating cylinder and a water distributor, and the mass transfer inner member consists of an auxiliary cylinder and a pressure air releaser. The inner member can realize gas-liquid-solid high-strength mixing, has the characteristics of uniform mixing, high mass transfer rate and high dissolved oxygen efficiency, can adjust the radius of the return circulating water, remarkably strengthens the mixing and mass transfer effects of biochemical reaction, shortens the hydraulic retention time, can be used for deep water biochemical devices, and reduces the floor area of the biochemical devices.
Description
Technical Field
The invention belongs to the field of wastewater treatment, and relates to an inner member for strengthening biochemical mixed mass transfer reaction process of refined wastewater.
Background
At present, the wastewater treatment of the refining and chemical enterprises basically comprises oil removal, air floatation and other physicochemical pretreatment, biochemical main treatment, advanced oxidation advanced treatment at the tail end and other processes, wherein the biochemical treatment process, particularly the aerobic biochemical treatment process, is a main process for removing pollutants in the refining and chemical wastewater. In order to achieve good treatment effect in aerobic biochemical treatment, sludge and wastewater need to be fully contacted through sludge-water mixing, and the concentration of dissolved oxygen in the wastewater is ensured through aeration. The existing biochemical treatment process of refining wastewater basically takes a pool type soil building structure as a main part, a required air source is provided by a fan, and mixed mass transfer is realized by the design of a water distribution and air distribution pipeline in the pool, so that the mode has some defects:
1. the mixing is incomplete and dead corners exist. The mixing of the muddy water and the air water in the biochemical pond is realized by aeration, the rising of the bubbles drives the peripheral muddy water to flow upwards and become fluidized, but the fluidization can not realize the complete mixing of the muddy water and has aeration dead angles.
2. The oxygen mass transfer and utilization rate is low. The bubbles from the aeration system will quickly gather and grow up, and the rising speed of the bubbles is accelerated due to the increased diameter, so that the surface area of the bubbles is small, the retention time is short, the oxygen transfer rate is low, and the mass transfer effect is poor. In addition, since the sludge and water are not completely mixed, the shearing force of the water flow is small, the sludge flocs are large, and the sludge and water inside the sludge flocs are not sufficient, the utilization rate of the dissolved oxygen in the water by the sludge is also reduced.
Incomplete mixing and problems of oxygen mass transfer and utilization rate can affect the effect and stability of biochemical treatment of refinery wastewater. The problems can be solved only by increasing a water and gas distribution pipeline in the pool, increasing the air supply quantity of a fan and the like, but the problems of dead angle, uneven mixing, low dissolved oxygen efficiency and poor mass transfer efficiency in mixing are not solved essentially, and the investment cost and the operation energy consumption are increased.
Disclosure of Invention
In order to overcome the technical defects, the invention aims to provide an inner member for a biochemical device for refining wastewater, which can realize high-strength gas-liquid-solid mixing, provide micro-nano bubbles, increase oxygen partial pressure, and has the characteristics of uniform mixing, high mass transfer rate and high dissolved oxygen efficiency.
The purpose of the invention is realized by the following technical scheme: an internal member for strengthening biochemical mixed mass transfer reaction process of refining and chemical wastewater comprises a transmission internal member and a mass transfer internal member which are arranged in a peripheral barrel body,
the transmission internal member comprises a central circulating cylinder, a water distributor and a pressure air releaser, wherein the central circulating cylinder is positioned in the center of the shaft of the peripheral barrel body, the axial bottom of the central circulating cylinder is provided with the water distributor with an upward opening, and the axial middle section of the central circulating cylinder is provided with the pressure air releaser;
the mass transfer inner member comprises a plurality of auxiliary cylinders, a water distributor and a pressure oxygen-enriched gas releaser, wherein the auxiliary cylinders uniformly surround the central circulation cylinder, the axial bottom of the auxiliary cylinders is provided with the water distributor and the pressure oxygen-enriched gas releaser with upward openings, and the water distributor is slightly higher than the pressure oxygen-enriched gas releaser;
in the technical scheme of the internal member, the transmission internal member preferably further comprises a fluid director which is connected with the top of the central circulating cylinder and has a downward water outlet opening, more preferably, the central circulating cylinder is connected with the fluid director through an overflow weir arranged at the upper part, preferably, the top of the central circulating cylinder is uniformly distributed and connected with 4-10 fluid directors, and the horizontal length of the fluid director is determined according to the equipment size and the biochemical mixing effect.
In the technical scheme of the internal member, the pressure air releaser is preferably a micron-sized aerator with an upward opening.
In the above technical solution of the inner member, the oxygen-enriched gas in the pressure oxygen-enriched gas releaser preferably has an oxygen concentration of 30% to 100%.
In the technical scheme of the internal component, the preferable pressure oxygen-enriched gas releaser is one of a jet pump, a venturi tube, a gas-liquid mixing pump and a micro-nano hole aeration disc.
In the technical scheme of the inner member, the number of the auxiliary cylinders is preferably 4-8.
In the technical scheme of the inner member, the peripheral barrel body is preferably a cylindrical barrel body or a polygonal barrel body.
In the internal component for strengthening the biochemical mixed mass transfer reaction process of the refining wastewater, a central circulating cylinder, a fluid director, a pressure air releaser and a water distributor are combined into a transmission internal component to form a hydraulic circulating system, mainly realize high-strength rapid mixing of gas, liquid and solid, and have the mass transfer function; the auxiliary cylinder, the water distributor and the pressure oxygen-enriched gas releaser are combined into a mass transfer inner component, so that the system realizes high-efficiency mass transfer and has a hybrid transmission function. In the transmission internal component, the pressure air releaser adopts compressed air as the transmission power of the system, and realizes the adjustment of the transmission effect of the system through the change of the intake pressure and the flow. The released compressed gas expands to form a large amount of bubbles to drive the sewage in the central circulating cylinder to quickly rise, the sewage is guided to other positions in the device by the horizontal flow guider, and the guided sewage moves downwards under the action of gravity and then enters the central circulating cylinder under the action of negative pressure to realize hydraulic circulation. The water outlets are arranged on the fluid director along the length direction to form a plurality of hydraulic circulation rings with different sizes, and the auxiliary transmission function of the mass transfer inner member is combined, so that the mixing effect is effectively improved, and the mixing dead angle is avoided. In the mass transfer inner component, the pressure oxygen-enriched gas releaser adopts oxygen-enriched gas as a gas source, so that the oxygen partial pressure in a gas phase is improved, and the solubility of oxygen in water and the mass transfer rate are obviously improved; the pressure oxygen-enriched gas releaser adopts one of a jet pump, a venturi tube, a gas-liquid mixing pump and a micro-nano hole aeration disc, so that micro-nano bubbles can be provided, the gas-liquid contact area is increased, and the mass transfer efficiency is improved; the oxygen utilization efficiency is effectively improved by combining the auxiliary mass transfer function of the transmission internal component. The pressure oxygen-enriched gas releaser adopts a high-pressure gas source, can realize deep water aeration and improve the dissolved oxygen efficiency.
The inner member for reinforcing the biochemical mixed mass transfer reaction process of the refinery and chemical wastewater respectively reinforces the mass transfer and transmission effects of a biochemical system, can well solve the problems of uneven mixing, dead corners, low dissolved oxygen efficiency and poor mass transfer efficiency in the biochemical mixing process, can improve the dissolved oxygen effect in a biochemical device, and can realize the rapid homogenization of mud-water-gas and the gas ultra-rapid dispersion reaction in a reaction tank by adjusting the concentration and the air input of oxygen-enriched gas; compared with the traditional biochemical reaction tank, the biochemical equipment device can be integrated and installed in a deep well mode by designing the size of the inner components and arranging the inner components in the equipment, so that the occupied area is greatly saved, and the utilization efficiency of the land is improved.
Drawings
FIG. 1 is a schematic diagram of a longitudinal section of an internal component of a biochemical mass transfer reaction process for enhancing refined wastewater according to an embodiment of the present invention;
FIG. 2 is a top view of the inner member of FIG. 1;
FIG. 3 is a schematic top view of the internal components of the enhanced biochemical mixed mass transfer reaction process for refined wastewater according to another embodiment;
in the figure: 1. a fluid director 2, a peripheral barrel body 3, a central circulating barrel 4, an auxiliary barrel body 5, a water distributor 6, a pressure air releaser 7 and a pressure oxygen-enriched gas releaser.
Detailed Description
The present invention is further described with reference to the accompanying drawings and specific application examples, which do not limit the technical solutions of the present invention.
As shown in fig. 1-2, the central circulation cylinder 3 of the internal member for enhancing biochemical mixed mass transfer reaction process of the refining wastewater is formed by seamless welding of 316L stainless steel, 6 fluid directors 1 are seamlessly welded on the upper part of the central circulation cylinder 3, and the fluid directors 1 are uniformly distributed around the central circulation cylinder and are 316L stainless steel pipes with downward openings; the axial center of the central circulating cylinder 3 is externally connected with a micron-sized aerator with an upward opening, wherein the diameter of the micron-sized aerator is half of that of the central circulating cylinder so as to reduce resistance generated in the hydraulic lifting process; the peripheral barrel body 2 made of 316L stainless steel is connected with the central barrel body through 316L stainless steel bars at the top and the bottom; 6 auxiliary cylinders 4 are uniformly distributed between the peripheral cylinder body 2 and the central circulating cylinder body 3; the pressure air releaser 6 is positioned at the bottom of the auxiliary cylinder 4 and is fixed at the central position of the bottom of the auxiliary cylinder 4 by 316L stainless steel, the pressure air releaser 6 is a micro-nano hole aeration disc with an upward opening, a gas-liquid mixing pump is connected outside the pressure air releaser, and the oxygen concentration of the selected oxygen-enriched gas is 48 percent; the water distributor 5 is positioned at the bottom of the auxiliary cylinder 4 and the central circulating cylinder 3, is slightly higher than the pressure oxygen-enriched gas releaser 7 of the auxiliary cylinder 4, and has an upward outlet.
The specific implementation case is as follows:
example 1 COD of certain refinery waste water is 8657mg/L, pH is 8.21; after the operation is stable, the load of the device is 0.1m3/d, the COD of the effluent is 562.7mg/L, and the removal efficiency is 93.50 percent.
Example 2 COD of certain refinery waste water was 7954mg/L, pH 7.98; after the operation is stable, the load of the device is 0.1m3/d, the COD of the effluent is 588.6mg/L, and the removal efficiency is 92.60 percent.
Example 3 COD of certain refinery waste water was 9548mg/L, pH 8.49; after the operation is stable, the load of the device is 0.1m3/d, the COD of the effluent is 750.5mg/L, and the removal efficiency is 92.14 percent.
Claims (7)
1. An inner member for reinforcing the biochemical mixed mass transfer reaction process of refining wastewater is characterized by comprising a transmission inner member and a mass transfer inner member which are arranged in a peripheral barrel,
the transmission internal member comprises a central circulating cylinder, a water distributor and a pressure air releaser, wherein the central circulating cylinder is positioned in the center of the shaft of the peripheral barrel body, the axial bottom of the central circulating cylinder is provided with the water distributor with an upward opening, and the axial middle section of the central circulating cylinder is provided with the pressure air releaser;
the mass transfer inner member comprises a plurality of auxiliary cylinders, a water distributor and a pressure oxygen-enriched gas releaser, wherein the auxiliary cylinders are uniformly surrounded around the central circulation cylinder, the axial bottom of the auxiliary cylinders is provided with the water distributor and the pressure oxygen-enriched gas releaser with upward openings, and the position of the water distributor is slightly higher than that of the pressure oxygen-enriched gas releaser; the transmission inner component also comprises a fluid director which is connected with the top of the central circulating cylinder and has a downward water outlet opening; the central circulating cylinder is connected with the fluid director through an overflow weir arranged at the upper part; the water outlets are arranged on the fluid director along the length direction to form a plurality of hydraulic circulation rings with different sizes, and the auxiliary transmission function of the mass transfer inner member is combined, so that the mixing effect is effectively improved, and the mixing dead angle is avoided.
2. The inner member according to claim 1, wherein 4-10 flow deflectors are uniformly distributed and connected to the top of the central circulating cylinder.
3. The internals according to claim 1, wherein the compressed air releaser is a micron-scale aerator with an upward opening.
4. The internals according to claim 1, wherein the oxygen-enriched gas oxygen concentration of said pressure oxygen-enriched gas releaser is comprised between 30% and 100%.
5. The internals according to claim 1, wherein the pressurized oxygen-enriched gas releaser is one of a jet pump, a venturi tube, a gas-liquid mixing pump and a micro-nano-porous aeration disk.
6. An inner member according to claim 1, wherein the number of auxiliary cylinders is 4-8.
7. The internals according to claim 1, wherein said peripheral barrel is a cylindrical barrel or a polygonal barrel configuration.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011602718.XA CN113184980B (en) | 2020-12-29 | 2020-12-29 | Internal member for reinforcing biochemical mixed mass transfer reaction process of refining wastewater |
| PCT/CN2021/134125 WO2022142949A1 (en) | 2020-12-29 | 2021-11-29 | Internal component for enhancing biochemical mixing and mass transfer reaction process of refinery wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011602718.XA CN113184980B (en) | 2020-12-29 | 2020-12-29 | Internal member for reinforcing biochemical mixed mass transfer reaction process of refining wastewater |
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| CN113184980A CN113184980A (en) | 2021-07-30 |
| CN113184980B true CN113184980B (en) | 2022-11-15 |
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| WO (1) | WO2022142949A1 (en) |
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| CN113184980B (en) * | 2020-12-29 | 2022-11-15 | 中海油天津化工研究设计院有限公司 | Internal member for reinforcing biochemical mixed mass transfer reaction process of refining wastewater |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2390875Y (en) * | 1999-06-24 | 2000-08-09 | 石林峰 | Sewage treatment apparatus |
| KR100352166B1 (en) * | 2000-05-08 | 2002-09-12 | 주식회사 환경비젼이십일 | Process and plant for the efficiency solubility of gas and sludge mixing |
| CN1631812A (en) * | 2004-12-07 | 2005-06-29 | 天津大学 | Large-scale array type circulation reactor with multiple draft tubes for treating oil refining wastewater |
| CN101913694B (en) * | 2010-08-19 | 2012-05-30 | 南京大学 | Internal-circulation ozone contact reaction tower for advanced treatment of industrial waste water |
| CN104478080B (en) * | 2014-12-31 | 2016-04-20 | 许中华 | The efficiently heavy stream aerobic reactor of honeycomb fashion |
| CN205151881U (en) * | 2015-11-20 | 2016-04-13 | 山东省环境保护科学研究设计院 | Air stripping sinks and flows good oxygen sewage treatment plant |
| CN106865756B (en) * | 2017-04-17 | 2023-05-26 | 苏州清然环保科技有限公司 | Sewage treatment device |
| CN107162178B (en) * | 2017-07-03 | 2020-08-07 | 江苏奥尼斯环保科技有限公司 | Full-mixing MBBR reactor |
| CN207158893U (en) * | 2017-08-28 | 2018-03-30 | 山东许中华环保科技有限公司 | Plug-flow, which declines, exposes aerobic reactor |
| CN107651749A (en) * | 2017-10-31 | 2018-02-02 | 中海油天津化工研究设计院有限公司 | A kind of integrated bioreactor of pre-treating high concentration oil refining wastewater |
| CN113184980B (en) * | 2020-12-29 | 2022-11-15 | 中海油天津化工研究设计院有限公司 | Internal member for reinforcing biochemical mixed mass transfer reaction process of refining wastewater |
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| CN113184980A (en) | 2021-07-30 |
| WO2022142949A1 (en) | 2022-07-07 |
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