CN210885705U - Reclaimed water recycling system for petrochemical wastewater - Google Patents
Reclaimed water recycling system for petrochemical wastewater Download PDFInfo
- Publication number
- CN210885705U CN210885705U CN201921635782.0U CN201921635782U CN210885705U CN 210885705 U CN210885705 U CN 210885705U CN 201921635782 U CN201921635782 U CN 201921635782U CN 210885705 U CN210885705 U CN 210885705U
- Authority
- CN
- China
- Prior art keywords
- tank
- water
- membrane
- communicated
- recycling system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The utility model relates to a reclaimed water recycling system of petrochemical industry waste water, which comprises a waste water pretreatment device and a reclaimed water recycling device which are arranged in sequence, wherein the waste water pretreatment device comprises a advection oil separation tank, a homogeneous oil removal tank, an oil separation adjusting tank, a cross corrugated plate oil-water separator, a pressurized dissolved air flotation device, a middle adjusting tank, a hydrolysis reactor and an A/O reaction device which are communicated in sequence; the reclaimed water recycling device comprises a coagulation sedimentation tank, an adjusting detection tank, a GBAF reactor, a double-membrane water inlet adjusting tank, a multi-medium filter, a UF ultrafiltration membrane, a UF water production tank, a security filter, an RO membrane and a recycled clean water tank which are sequentially communicated, wherein the coagulation sedimentation tank is communicated with the A/O reaction device; the reclaimed water recycling system adopts a modular design, and all parts are flexibly combined and communicated through a water pump and a pipeline. The utility model discloses have the quality of water change that adapts to the emission sewage, it is strong to reach to cut dirty ability, and the treatment effeciency is high, effectively degrade organic pollutant and ammonia nitrogen in the waste water, reach beneficial effect such as retrieval and utilization water quality requirement.
Description
Technical Field
The utility model relates to a reuse of reclaimed water system especially relates to a reuse of reclaimed water system of petrochemical waste water, belongs to sewage treatment technical field.
Background
Petrochemical wastewater is the most difficult environmental protection problem to solve in the petroleum smelting process, and because the components in the wastewater are complex, the wastewater cannot be treated by a single means, and the pressure of wastewater treatment is increased. The petrochemical wastewater is sewage generated in the processes of crude oil refining, processing, oil product washing and the like, is a multiphase system which integrates suspended oil, emulsified oil, soluble organic matters and inorganic salt, and mainly comprises pollutants such as petroleum, COD, BOD, sulfide, volatile phenol, suspended matters, ammonia nitrogen and the like. At present, petrochemical wastewater is mainly treated in a centralized mixed treatment mode, namely, oil-containing sewage, purified water after sulfur-containing sewage is subjected to steam stripping pretreatment, domestic wastewater and the like from various production devices are mixed and then treated by an oil separation-flotation-biochemical three-set combined process, and then the mixture is discharged after reaching the standard, and advanced enterprises realize partial recycling of the sewage by adding advanced treatment processes such as coagulation filtration, biological contact oxidation, BAF, MBR, and even double-membrane process (ultrafiltration and reverse osmosis) desalination. However, with the increasingly poor crude oil properties and the requirement of high-proportion reuse of sewage due to water resource shortage, the centralized mixed treatment mode and the treatment process of sewage are increasingly exposed to greater problems.
As shown in fig. 1, the existing petrochemical wastewater treatment system is designed such that oily wastewater is lifted by a sump lift pump into an oil separation regulation tank and is physically separated by oil-water density difference. The water discharged from the oil separation adjusting tank is pumped to a first-stage pressurized dissolved air floatation device by an air floatation feeding pump, and the water discharged from the first-stage floatation automatically flows to a second-stage pressurized dissolved air floatation device, so that the oil removing process of the pretreatment of the oily wastewater is completed. And (3) conditioning the pretreated effluent in an intermediate regulating tank, wherein the conditioning comprises pH regulation and nutrition regulation, the pretreated effluent is pumped into a rapid hydrolysis reactor by a feed pump of the hydrolysis reactor, and the effluent overflows from the top of the hydrolysis reactor and enters a contact oxidation tank. The effluent of the contact oxidation tank is connected with a secondary sedimentation tank, and the effluent of the sedimentation tank generally reaches the discharge standard. If the biochemical effluent is abnormal or exceeds the standard in a short time, the sewage flows from the secondary sedimentation tank to the coagulating sedimentation tank automatically, and the sewage after coagulating chemical dosing treatment reaches the standard and is discharged. The sewage discharged after reaching the standard (namely 20 tons/hour) is pumped to a municipal pipe network interface through an external sewage discharge pump, wherein a part of the sewage (namely the water quantity not more than 100 tons/hour) is sent to the BAF reactor through a reclaimed water system lifting pump, the effluent of the BAF reactor automatically flows into a sand filter to remove SS and turbidity, the sewage meeting the reclaimed water quality requirement enters a reclaimed clear water tank, chlorine dioxide is added into the reclaimed clear water tank by a chlorine dioxide generator for disinfection, and then the sewage is pumped to the reclaimed pipe network interface through a reclaimed water lifting pump.
According to the effluent quality indexes of the existing petrochemical wastewater treatment system, CODcr, ammonia nitrogen and the like do not reach the discharge standard, and the ammonia nitrogen exceeds the standard, especially seriously. And the oil content in the whole sewage treatment process is high, floating slag is not generated in air floatation, and all floating oil is floating oil. Because the treatment process of the existing petrochemical wastewater treatment system is a contact oxidation method, the biological denitrification efficiency is not high. And along with the development of production, the effluent quality of the existing petrochemical wastewater treatment system can not meet the requirement of environmental protection. Therefore, the existing petrochemical wastewater treatment system needs to be modified, the treatment capacity is enlarged, the biological denitrification function is added, and the advanced treatment is added, so that the petrochemical wastewater treatment system reaches the required discharge standard.
SUMMERY OF THE UTILITY MODEL
The utility model discloses mainly be to the sewage treatment in-process oil content that current petrochemical effluent system exists high, and exist and the not high problem of biological denitrogenation efficiency with the state of oil slick, dispersed oil, emulsified oil and dissolved oil more, provide one kind and can adapt to the quality of water change that technology discharged sewage, it is strong to reach the ability of intercepting dirty, and the treatment effeciency is high, effectively degrades organic pollutant and ammonia nitrogen in the waste water, reaches the reuse of water reuse system of the petrochemical waste water that retrieval and utilization water quality required.
The purpose of the utility model is mainly realized by the following scheme:
a reclaimed water recycling system for petrochemical wastewater comprises a wastewater pretreatment device and a reclaimed water recycling device which are sequentially arranged, wherein the wastewater pretreatment device comprises a advection oil separation tank, a homogeneous oil removal tank, an oil separation adjusting tank, a cross corrugated plate oil-water separator, a pressurized dissolved air floatation device, a middle adjusting tank, a hydrolysis reactor and an A/O reaction device which are sequentially communicated; the reclaimed water recycling device comprises a coagulation sedimentation tank, a regulation detection tank, a GBAF reactor, a double-membrane water inlet regulation tank, a multi-medium filter, a UF ultrafiltration membrane, a UF water production tank, a security filter, an RO membrane and a recycled clean water tank which are sequentially communicated, wherein the coagulation sedimentation tank is communicated with the A/O reaction device; the reclaimed water recycling system adopts a modular design, and all parts are flexibly combined and communicated through a water pump and a pipeline.
By adopting the technical scheme, most hydrophobic pollutants can be removed, the condition of entering a biochemical advanced treatment process is achieved, the operation intensity is reduced, pollutants such as oils and suspended matters are effectively removed, part of organic pollutants can be removed, the biochemical process treatment load is reduced, the A/O reaction device can effectively degrade the organic pollutants and ammonia nitrogen in wastewater, the GBAF reactor carries out advanced treatment on the wastewater, various indexes of effluent are ensured to meet the requirement of entering a double-membrane, and the effluent of the double-membrane reaches the requirement of recycling water quality.
Preferably, the advection oil separation tank, the homogeneous oil storage tank, the oil separation adjusting tank, the cross corrugated plate oil-water separator and the pressurized dissolved air floatation device are communicated with the oil storage tank.
Through adopting above-mentioned technical scheme, can discharge the heavy oil slick of oily waste water preliminary treatment in-process into the oil storage tank, resources are saved.
Preferably, the pressurized dissolved air flotation device comprises a first-stage pressurized dissolved air flotation device, a first-stage dissolved air flotation water tank, a second-stage pressurized dissolved air flotation device and a third-stage pressurized dissolved air flotation device which are sequentially communicated, wherein the first-stage pressurized dissolved air flotation device is communicated with a water outlet tank of the cross corrugated plate oil-water separator, and the third-stage pressurized dissolved air flotation device is communicated with the middle adjusting tank.
By adopting the technical scheme, emulsified oil and dissolved colloid pollutants can be removed, and the content of CODcr in the wastewater can be reduced to a certain extent due to the removal of suspended matters in the air floatation process.
Preferably, the A/O reaction device comprises an anoxic tank, an aerobic tank and a secondary sedimentation tank which are sequentially communicated, wherein the anoxic tank is communicated with the hydrolysis reactor, and the secondary sedimentation tank is communicated with the coagulation sedimentation tank; the aerobic tank is also communicated with the anoxic tank through a return pipe.
By adopting the technical scheme, the anaerobic tank leads the microorganisms to be subjected to anaerobic and aerobic alternate operation for microorganism screening, and the screened microorganisms not only can effectively remove organic matters in the wastewater, but also inhibit the propagation of filamentous bacteria and avoid the sludge bulking phenomenon.
As preferred, this reuse of reclaimed water system has still externally connected sludge treatment equipment, sludge treatment equipment is including the sludge return well, the sludge thickening jar and the sludge dewaterer that communicate in proper order, two heavy ponds with the sludge return well is linked together, the sludge return well still is linked together through back flow and good oxygen pond, coagulating sedimentation tank is linked together with the sludge thickening jar, the sludge dewaterer links to each other with mud cake outward transport end, and the supernatant in sludge thickening jar and the sludge dewaterer passes through the back flow and flows back to advection oil interceptor.
By adopting the technical scheme, the discharge of sludge can be reduced, and the supernatant in the sludge concentration tank and the sludge dewatering machine can be fully utilized.
Preferably, the intermediate adjusting tank, the aerobic tank, the GBAF reactor and the multimedia filter are also respectively communicated with a blower.
By adopting the technical scheme, the air blower supplies air to the intermediate regulating tank, the aerobic tank, the GBAF reactor and the multimedia filter.
Preferably, the regulation detection pool is respectively connected with the GBAF reactor and the multimedia filter through a back-flushing water inlet pipeline, and the GBAF reactor and the multimedia filter are connected with the middle regulation pool through a back-flushing water outlet pipeline.
By adopting the technical scheme, COD can be effectively degraded by the high-performance oxidative degradation function of the high-concentration biomembrane of the filter material, the removal rate can reach 30-50%, the heterotrophic microorganisms at the lower part of the GBAF reactor are dominant strains and can remove carbon sources in sewage, the aerobic bacteria at the upper part of the GBAF reactor are dominant, and ammonia nitrogen in sewage can be removed by nitrification and denitrification.
Preferably, the concentrated water passing through the UF ultrafiltration membrane flows to a dual-membrane influent conditioning tank through a return pipe.
Preferably, the concentrated water passing through the RO membrane flows to the NF membrane through a pipe; discharging the concentrated water passing through the NF membrane to a municipal pipe network, and enabling the other part of filtered clean water to flow to a recycled clean water tank through a pipeline; the UF water producing tank is also provided with a water producing pipeline which is directly communicated with the recycling clean water tank.
Preferably, the pore size of the UF ultrafiltration membrane is between 0.01 and 0.04 μm, the pore size of the RO membrane is between 5 and 0.1 μm, and the pore size of the NF membrane is between 1 and 5 nm.
Therefore, the utility model discloses possess following advantage: (1) the device is suitable for the water quality change of the process discharged sewage, and has strong sewage interception capability and high treatment precision; (2) most hydrophobic pollutants are removed, the conditions for entering a biochemical advanced treatment process are achieved, and the operation intensity is reduced; (3) the method can effectively remove oil, suspended matters and other pollutants, and can remove part of organic pollutants, thereby reducing the treatment load of the biochemical process; (4) the A/O reaction device can effectively degrade organic pollutants and ammonia nitrogen in the wastewater; (5) the GBAF reactor carries out advanced treatment on the wastewater, ensures that each index of effluent reaches the requirement of entering a double-membrane, and ensures that the effluent of the double-membrane reaches the requirement of recycling water quality; (6) the water after advanced treatment can replace fresh water, can be used as circulating water for supplementing water or can be supplemented with tap water for other purposes.
Drawings
FIG. 1 is a schematic view of a conventional petrochemical wastewater treatment system;
FIG. 2 is a schematic view of a petrochemical wastewater treatment system provided by the present invention.
Detailed Description
The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.
As shown in fig. 2, the utility model provides a technical scheme, a reuse of reclaimed water system of petrochemical waste water, this reuse of reclaimed water system comprises the waste water pretreatment device and the reuse of reclaimed water device that set up mutually in proper order, the waste water pretreatment device includes advection oil interceptor, homogeneity deoiling jar, oil removal surge tank, cross corrugated plate oil water separator, pressurization dissolved air flotation device, middle surge tank, hydrolysis reactor and the A/O reaction unit that communicate in proper order; the advection oil separation tank, the homogeneous oil storage tank, the oil separation adjusting tank, the cross corrugated plate oil-water separator and the pressurized dissolved air floatation device are communicated with the oil storage tank and used for recycling the heavy oil floating oil.
The pressurized dissolved air flotation device comprises a first-stage pressurized dissolved air flotation device, a first-stage dissolved air flotation water tank, a second-stage pressurized dissolved air flotation device and a third-stage pressurized dissolved air flotation device which are sequentially communicated, wherein the first-stage pressurized dissolved air flotation device is communicated with a water outlet groove of the crossed corrugated plate oil-water separator, and the third-stage pressurized dissolved air flotation device is communicated with a middle adjusting tank; the A/O reaction device comprises an anoxic tank, an aerobic tank and a secondary sedimentation tank which are sequentially communicated, wherein the aerobic tank adopts a plug flow aeration tank, the anoxic tank is communicated with the hydrolysis reactor, and the secondary sedimentation tank is communicated with the coagulation sedimentation tank; the aerobic tank is also communicated with the anoxic tank through a return pipe, wherein the intermediate adjusting tank, the aerobic tank, the GBAF reactor and the multimedia filter are also respectively communicated with the blower; wherein this system is still external to have sludge treatment equipment, sludge treatment equipment is including the sludge recirculation well, the sludge thickening jar and the sludge dewaterer that communicate in proper order, two heavy ponds with the sludge recirculation well is linked together, the sludge recirculation well is still linked together through back flow and good oxygen pond, coagulating sedimentation tank is linked together with the sludge thickening jar, the sludge dewaterer links to each other with the mud cake outward transport end, and the supernatant in sludge thickening jar and the sludge dewaterer passes through the back flow and flows back to advection oil interceptor.
The reclaimed water recycling device comprises a coagulation sedimentation tank, a regulation detection tank, a GBAF reactor, a double-membrane water inlet regulation tank, a multi-medium filter, a UF ultrafiltration membrane, a UF water production tank, a security filter, an RO membrane and a recycled clean water tank which are sequentially communicated, wherein the coagulation sedimentation tank is communicated with the A/O reaction device; the reclaimed water recycling system adopts a modular design, and all parts are flexibly combined and communicated through a water pump and a pipeline; the regulating and detecting pool is respectively connected with the GBAF reactor and the multimedia filter through a back-flushing water inlet pipeline, and the GBAF reactor and the multimedia filter are connected with the middle regulating pool through back-flushing water outlet pipelines; the concentrated water passing through the UF ultrafiltration membrane flows to a double-membrane water inlet regulating tank through a return pipe, and the concentrated water passing through the RO membrane flows to an NF membrane through a pipeline; discharging the concentrated water passing through the NF membrane to a municipal pipe network, and enabling the other part of filtered clean water to flow to a recycled clean water tank through a pipeline; the UF water producing tank is also provided with a water producing pipeline which is directly communicated with the recycling clean water tank. The pore diameter of the UF ultrafiltration membrane is 0.02 mu m, the pore diameter of the RO membrane is 5nm, and the pore diameter of the NF membrane is 3 nm.
Utilize the utility model relates to a flow that reuse of reclaimed water system of petrochemical waste water handled waste water is as follows:
oily wastewater enters a horizontal flow oil separation tank, physical separation is carried out through oil-water density difference, heavy oil floating oil is discharged into an oil storage tank, a water outlet groove of the horizontal flow oil separation tank is lifted to a homogeneous oil removal tank by a pump, light oil and heavy oil are further effectively treated, the homogeneous oil removal tank automatically flows into an oil separation adjusting tank, the oil separation adjusting tank is pumped into a cross corrugated plate oil-water separator by the pump to carry out deep oil removal, then the oil is automatically flowed into a first-stage pressurized dissolved air floatation device from the water outlet groove, first-stage flotation effluent flows into a first-stage dissolved air floatation water tank, the effluent is lifted to a second-stage pressurized dissolved air floatation device by the pump, the second-stage pressurized dissolved air floatation device automatically flows into a third-stage pressurized dissolved air floatation device, a flocculating agent and a demulsifying agent are added at an inlet of the first-stage pressurized dissolved air floatation device to effectively remove pollutants such as dirty oil, SS, colloid and the like from the oily wastewater, the effluent of the third-stage pressurized dissolved, nutrient salt is added for adjustment, acid is added at the inlet end of a feed pump of the hydrolysis reactor for adjusting the pH value, the acid is pumped into the rapid hydrolysis reactor, water overflows from the top of the hydrolysis reactor, and overflows from the hydrolysis reactor to increase the activity of anaerobic sludge, and the overflow water of the hydrolysis reactor enters an anoxic tank.
The anoxic pond is provided with a diving stirrerThe mixer makes the hydrocarbon converted into alcohol, aldehyde and acid through the back flow of nitrifying liquid, makes the hydrocarbon react with nitrite and nitrate to eliminate total nitrogen, and makes the sewage flow into aerobic tank to select the survival and propagation conditions of various microbes, so as to promote the propagation of microbes and inhibit the growth of harmful microbes, ensure the smooth operation of the process, adsorb, oxidize, assimilate and breathe selectively and eliminate organic matter under the action of active sludge and take NH into consideration3Removing N, selecting a biochemical treatment process for improving the sludge age of the sludge in the process design of the aerobic tank, facilitating the diversified cultivation of biological phases, reducing the discharge of excess sludge, reducing the load of sludge treatment, selecting conditions beneficial to promoting the generation of nitrobacteria, and adding NH3Effective NH removal by converting-N into nitrite and nitrate3-N。
And (2) enabling effluent of the aerobic tank to enter a secondary sedimentation tank for solid-liquid separation, enabling sludge to flow into a sludge backflow well, enabling one part of sludge to flow back to the aerobic tank, enabling the other part of excess sludge to enter a sludge concentration tank, enabling the rest of sewage to flow from the secondary sedimentation tank to a coagulating sedimentation tank, enabling the rest of sewage to enter a regulation monitoring tank after being treated by coagulating agents (coagulants and flocculants), enabling the sludge to enter a sludge dewatering machine through the sludge concentration tank, enabling the dewatered sludge to become mud cakes for processing and utilization, and enabling supernate of the sludge concentration tank and the sludge dewatering machine to flow back to a advection oil separation tank for. Sewage is sent into a GBAF reactor through a lifting pump, biochemical, nitrification and denitrification reactions are carried out again in a biological filter tank, the outlet water of the GBAF reactor automatically flows into a double-membrane water inlet adjusting tank, the double-membrane water inlet adjusting tank is pumped into a multi-medium filter by a pump, the outlet water enters a UF water production tank through an UF ultrafiltration membrane, concentrated water returns to the double-membrane water inlet adjusting tank, the UF water production tank enters a security filter through the pump, the outlet water enters an RO membrane through a high-pressure pump, the concentrated water enters an NF membrane, the produced water after further treatment through the NF membrane flows into a reuse clear water tank, the UF water production tank is provided with a water production pipeline for hooking and blending water and enters the reuse clear water tank, so that the user can more flexibly operate and debug to ensure that the double-membrane outlet water meets the use requirements and is more economical and reasonable, the RO membrane water directly enters the recycle clear water tank to be mixed with the NF membrane water, the NF membrane concentrated water is discharged into a municipal pipe network, and the reuse clear, Can be used for supplementing water by circulating water or other tap water.
The technique of the reverse-flow aeration biological filter (BIOSTYR), which is called BAF technique for short. The technology of the reverse-flow biological aerated filter (BIOSTYR) is improved to a certain extent and is called GBAF technology after improvement. The GBAF process is a high-efficiency biological filter tank combining biological treatment and physical adsorption, has high treatment efficiency, and particularly has high treatment efficiency on NH3The treatment of-N and the fine treatment of COD are not achieved by the conventional anaerobic or aerobic treatment. The GBAF process principle mainly comprises three processes: firstly, a certain amount of granular filter materials with smaller grain diameter are filled in the filter tank, and a high-activity biological membrane grows on the surface of the filter materials through aeration in the filter tank. When sewage flows through, the sewage is subjected to biochemical treatment by utilizing the high-activity biological membrane on the surface of the filter material and the biological oxidation degradation effect of biological flocs between the filter materials, which is a biological oxidation degradation process; secondly, because the particle size of the filter material is reduced and is in a compacted state, under the biological adsorption action of biological flocculation between the biological membrane and the filter material, the filter layer can adsorb and intercept most suspended matters (including fallen biological membranes) in the sewage, and a sedimentation tank is not required to be arranged behind the filter layer, so that the filter is similar to a filter tank in appearance, and the filtering process is called as a filtering process. The biological oxidation degradation process and the filtering process are simultaneously carried out in the aeration biological filter. And thirdly, along with the prolonging of the operation time, the head loss of the filter tank is gradually increased, and when the head loss of the filter tank reaches a design value, backwashing is needed to be carried out to clean the trapped suspended matters and aged biological membranes, which is a backwashing process. The filter material has high-performance oxidative degradation function of the high-concentration biological membrane, can effectively degrade COD, and has a removal rate of 30-50%; the filter material in a compacted state can intercept large pieces of fallen biological membranes and suspended matters; at the lower part of the GBAF reactor, the heterotrophic microorganism is a dominant strain and mainly used for removing a carbon source in sewage; the upper part of the GBAF reactor is dominated by aerobic bacteria and mainly used for treating the wastewater byNitrification and denitrification are carried out, and ammonia nitrogen in the sewage is removed; because the regular washing is carried out, the growth of microorganisms on the surface of the filler is in various distributions, and the composition of the biological membrane is rich and diverse, so that the GBAF reactor has stronger impact resistance.
Through the reuse of reclaimed water system who uses petrochemical waste water, the play water index can reach: CODMnNot less than 8mg/L, BOD5 and not more than 5mg/L, turbidity is not more than 5 NTU, total phosphorus is not more than 1mg/L, petroleum is not more than 5mg/L, ammonia nitrogen is not more than 5mg/L, water reuse rate in the whole year is not less than 85%, and the requirement of recycled water quality is met.
It should be understood that the advection oil interceptor, the homogeneity deoiling jar, the oil removal surge tank, the cross corrugated plate oil water separator, the pressurization dissolved air flotation device, middle equalizing basin, hydrolysis reactor and the A/O reaction device, the coagulating sedimentation tank, adjust the detection pond, the two membrane intake equalizing basin, the multi-media filter, the UF milipore filter, UF product pond, the safety filter, RO membrane, NF membrane, retrieval and utilization clean water basin, the mud return well, sludge thickening jar and sludge dewatering machine are the parts that prior art or technical personnel in this field know, and its structure and principle all can be known or be learned through conventional experimental method for this skilled person through the technical manual, and in addition, it should be understood that this embodiment only is used for the explanation the utility model discloses and is not used for limiting the scope of the utility model. Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Claims (10)
1. A reclaimed water recycling system for petrochemical wastewater is characterized in that: the reclaimed water recycling system comprises a wastewater pretreatment device and a reclaimed water recycling device which are sequentially arranged, wherein the wastewater pretreatment device comprises a advection oil separation tank, a homogeneous oil removal tank, an oil separation adjusting tank, a cross corrugated plate oil-water separator, a pressurized dissolved air flotation device, a middle adjusting tank, a hydrolysis reactor and an A/O reaction device which are sequentially communicated; the reclaimed water recycling device comprises a coagulation sedimentation tank, a regulation detection tank, a GBAF reactor, a double-membrane water inlet regulation tank, a multi-medium filter, a UF ultrafiltration membrane, a UF water production tank, a security filter, an RO membrane and a recycled clean water tank which are sequentially communicated, wherein the coagulation sedimentation tank is communicated with the A/O reaction device; the reclaimed water recycling system adopts a modular design, and all parts are combined and communicated through a water pump and a pipeline.
2. The reclaimed water recycling system for petrochemical wastewater according to claim 1, comprising: the advection oil separation tank, the homogeneous oil storage tank, the oil separation adjusting tank, the cross corrugated plate oil-water separator and the pressurized dissolved air floatation device are all communicated with the oil storage tank.
3. The reclaimed water recycling system for petrochemical wastewater according to claim 1, comprising: the pressurization dissolves gas air supporting device dissolves gas air supporting equipment, one-level pressurization dissolves gas air supporting pond, second grade pressurization dissolves gas air supporting equipment and tertiary pressurization dissolves gas air supporting equipment including the one-level pressurization that communicates in proper order, the one-level pressurization dissolve gas air supporting equipment with cross buckled plate oil water separator's play basin is linked together, tertiary pressurization dissolves gas air supporting equipment and is linked together with middle equalizing basin.
4. The reclaimed water recycling system for petrochemical wastewater according to claim 3, comprising: the A/O reaction device comprises an anoxic tank, an aerobic tank and a secondary sedimentation tank which are sequentially communicated, wherein the anoxic tank is communicated with the hydrolysis reactor, and the secondary sedimentation tank is communicated with the coagulation sedimentation tank; the aerobic tank is also communicated with the anoxic tank through a return pipe.
5. The reclaimed water recycling system for petrochemical wastewater according to claim 4, wherein the reclaimed water recycling system comprises: this reuse of reclaimed water system is still external to have sludge treatment equipment, sludge treatment equipment is including the sludge return well, the sludge thickening jar and the sludge dewaterer that communicate in proper order, two heavy ponds with the sludge return well is linked together, the sludge return well is still linked together through back flow and good oxygen pond, coagulating sedimentation tank is linked together with the sludge thickening jar, the sludge dewaterer links to each other with mud cake outward transport end, and the supernatant in sludge thickening jar and the sludge dewaterer passes through the back flow and flows back to advection oil interceptor.
6. The reclaimed water recycling system for petrochemical wastewater according to claim 4, wherein the reclaimed water recycling system comprises: the middle adjusting tank, the aerobic tank, the GBAF reactor and the multimedia filter are also respectively communicated with the blower.
7. The reclaimed water recycling system for petrochemical wastewater according to claim 6, comprising: the regulating and detecting pool is respectively connected with the GBAF reactor and the multimedia filter through a back-flushing water inlet pipeline, and the GBAF reactor and the multimedia filter are connected with the middle regulating pool through back-flushing water outlet pipelines.
8. The reclaimed water recycling system for petrochemical wastewater according to claim 1, comprising: and the concentrated water passing through the UF ultrafiltration membrane flows to a double-membrane water inlet adjusting tank through a return pipe.
9. The reclaimed water recycling system for petrochemical wastewater according to claim 8, comprising: the concentrated water passing through the RO membrane flows to the NF membrane through a pipeline; discharging the concentrated water passing through the NF membrane to a municipal pipe network, and enabling the other part of filtered clean water to flow to a recycled clean water tank through a pipeline; the UF water producing tank is also provided with a water producing pipeline which is directly communicated with the recycling clean water tank.
10. The reclaimed water recycling system for petrochemical wastewater according to claim 9, comprising: the pore size of the UF ultrafiltration membrane is between 0.01 and 0.04 mu m, the pore size of the RO membrane is between 5nm and 0.1 mu m, and the pore size of the NF membrane is between 1nm and 5 nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921635782.0U CN210885705U (en) | 2019-09-27 | 2019-09-27 | Reclaimed water recycling system for petrochemical wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921635782.0U CN210885705U (en) | 2019-09-27 | 2019-09-27 | Reclaimed water recycling system for petrochemical wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210885705U true CN210885705U (en) | 2020-06-30 |
Family
ID=71336127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921635782.0U Active CN210885705U (en) | 2019-09-27 | 2019-09-27 | Reclaimed water recycling system for petrochemical wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210885705U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113754189A (en) * | 2021-09-06 | 2021-12-07 | 江苏丽天石化码头有限公司 | Multi-class cabin washing wastewater treatment system and treatment method |
| WO2022032481A1 (en) * | 2020-08-11 | 2022-02-17 | 桂林市深能环保有限公司 | System and method for cooperatively treating kitchen waste in garbage incineration plant |
-
2019
- 2019-09-27 CN CN201921635782.0U patent/CN210885705U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022032481A1 (en) * | 2020-08-11 | 2022-02-17 | 桂林市深能环保有限公司 | System and method for cooperatively treating kitchen waste in garbage incineration plant |
| CN113754189A (en) * | 2021-09-06 | 2021-12-07 | 江苏丽天石化码头有限公司 | Multi-class cabin washing wastewater treatment system and treatment method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205893015U (en) | Coking wastewater complete set processing system | |
| KR100784933B1 (en) | Apparatus for treating organic matter and nitrogen of high density organic wastewater | |
| CN108101316B (en) | Asphalt production wastewater treatment process | |
| CN105016577A (en) | Advanced treatment system for process sewage and advanced treatment method for sewage | |
| CN101575162A (en) | Method for treating wastewater of fibre-board plant | |
| KR100957851B1 (en) | Method of water treatment | |
| CN110818205A (en) | System and process for reducing concentration of pollutants in steel comprehensive wastewater | |
| CN105523692A (en) | Biochemical treatment method for improving polymer-containing sewage matrix of oil field | |
| CN208136047U (en) | A kind of coking wastewater processing system | |
| CN109437454A (en) | The reinforcing materialization treating method and apparatus of refinery high ammonia special type oily wastewater with high salt | |
| CN210885705U (en) | Reclaimed water recycling system for petrochemical wastewater | |
| CN113860637A (en) | Method and system for treating leachate of refuse transfer station in southern region | |
| CN114105412A (en) | Method for integrally treating coking wastewater | |
| CN108892333A (en) | A kind of concentration organic wastewater disposal process and system | |
| CN110372086B (en) | Reduction of substances in contaminated fluids using naturally occurring biological growth media | |
| CN111362534A (en) | Kitchen wastewater treatment system | |
| KR101300466B1 (en) | Apparatus for wastewater treatment and method for phosphorus removal from wastewater | |
| CN109437494A (en) | A kind of processing unit and method of water-jet loom sewage | |
| CN216808506U (en) | Kitchen and kitchen garbage and wastewater treatment system | |
| CN113277677B (en) | Treatment method and reuse water treatment process for production wastewater of disposable nitrile gloves | |
| CN206143030U (en) | AO+BAF coupling process handles device of integrated oily waste water of smelting | |
| CN202529948U (en) | Treatment and recycling system for coking phenol-cyanogen wastewater | |
| CN205420095U (en) | Oil refinery waste water retrieval and utilization composite set | |
| CN211999387U (en) | Kitchen wastewater treatment system | |
| CN211521950U (en) | System for reducing concentration of pollutants in steel comprehensive wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |