CN217972922U - A high-efficiency processing device for industrial sewage - Google Patents
A high-efficiency processing device for industrial sewage Download PDFInfo
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- CN217972922U CN217972922U CN202222427390.3U CN202222427390U CN217972922U CN 217972922 U CN217972922 U CN 217972922U CN 202222427390 U CN202222427390 U CN 202222427390U CN 217972922 U CN217972922 U CN 217972922U
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Abstract
The utility model belongs to the technical field of sewage treatment equipment, and discloses a high-efficiency treatment device for industrial sewage, which comprises a coagulating sedimentation tank, a deep bed denitrification filter tank and an ozone dissolved air oxidation tank; the coagulating sedimentation tank is provided with a mixing tank, a flocculation tank and a coagulating sedimentation tank which are communicated in series; a water collecting tank of the coagulation sedimentation tank is connected with a water inlet channel of the deep bed denitrification filter, and a water inlet gate plate for controlling water inlet is arranged between the water collecting tank and the water inlet channel; the deep bed denitrification filter tank is communicated with the ozone dissolved air oxidation tank through a jet pump, and an ozone dissolved air device is arranged on a pipeline communicated with the ozone dissolved air oxidation tank through the jet pump. The utility model discloses on the basis of original advanced treatment technology, optimize and integrate holistic processing structure, realized that same device realizes three kinds of technologies, realizes trinity high-efficient advanced treatment, the utility model discloses getting rid of total phosphorus, COD, SS aspect more high-efficient to save structure area, realize cost reduction.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment device, especially, relate to a high-efficient processing apparatus for industrial sewage.
Background
In industrial sewage treatment, it is difficult to meet higher-level discharge standards by a single biological treatment method, so that an advanced treatment process needs to be added at the back end of biological treatment in order to meet discharge standards. The advanced treatment process mainly aims at refractory organic matters, total phosphorus, total nitrogen, suspended matters and the like in the sewage. The deep treatment of total phosphorus mainly adopts an adsorption precipitation method, forms insoluble phosphate precipitate in water by adding ferric salt and aluminum salt, and then removes phosphorus from sewage by solid-liquid separation, and the main steps are precipitation reaction, coagulation and solid-liquid separation. The deep treatment of the total nitrogen mainly adopts a biomembrane method, and the denitrification reaction is carried out through microorganisms attached to the filter material under the anaerobic condition to convert nitrate nitrogen into nitrogen and discharge the nitrogen. For organic matters which are difficult to degrade, a strong oxidation method is mainly adopted for deep treatment, and long-chain organic matters are directly oxidized into carbon dioxide and water through the oxidation action of a strong oxidant, so that the organic matters are removed. The existing sewage advanced treatment technology has more limitations in application and can not be used more flexibly. Firstly, the precipitation process for removing the total phosphorus has the defects of poor impact resistance, long retention time, difficult sludge discharge and high medicament use cost. And a plurality of treatment processes are needed to remove the total nitrogen, COD and total phosphorus, so that the floor area and the construction cost are increased, the integral process is lack of integrity, and the operation is difficult.
Through the above analysis, the problems and defects of the prior art are as follows:
(1) The existing sewage advanced treatment mode has poor impact resistance, long retention time, difficult sludge discharge and high medicament use cost.
(2) The existing sewage advanced treatment mode needs to use a plurality of treatment processes, so that the occupied area and the construction cost are increased, the integral process is lack of integrity, and the operation is difficult.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems existing in the prior art, the embodiment of the utility model discloses a high-efficiency treatment device for industrial sewage is provided. The technical scheme is as follows:
a high-efficiency treatment device for industrial sewage is provided with:
a coagulating sedimentation tank, a deep bed denitrification filter tank and an ozone dissolved air oxidation tank;
the coagulating sedimentation tank is provided with a mixing tank, a flocculation tank and a coagulating sedimentation tank which are communicated in series;
the water collecting tank of the coagulation sedimentation tank is connected with the water inlet channel of the deep bed denitrification filter, is positioned above the inclined pipe in the coagulation sedimentation tank and is used for collecting the water outlet of the coagulation sedimentation tank, and a water inlet gate plate for controlling water inlet is arranged between the water collecting tank and the water inlet channel;
the deep bed denitrification filter tank is communicated with the ozone dissolved air oxidation tank through a jet pump, and an ozone dissolved air device is arranged on a pipeline communicated with the ozone dissolved air oxidation tank through the jet pump. The ozone dissolving device is arranged on a water inlet pipeline of the ozone dissolving and oxidizing tank, and the water is sucked in by forming negative pressure so as to dissolve ozone.
In one embodiment, a mixing tank stirrer and a flocculation tank stirrer are respectively arranged above the mixing tank and the flocculation tank, and the flocculation tank stirrer is connected with a double-layer blade stirring rod and is matched with a reaction barrel.
In one embodiment, a sedimentation tank inclined pipe is arranged above the coagulating sedimentation tank, and a triangular water outlet groove is arranged above the sedimentation tank inclined pipe.
In one embodiment, the bottom of the coagulating sedimentation tank is of a funnel structure, a mud scraper is arranged above the funnel structure, the mud scraper is located in the center of the coagulating sedimentation tank, a mud level meter is arranged in the coagulating sedimentation tank, and a residual sludge pump and a return sludge pump are arranged in an earhole of the coagulating sedimentation tank.
In one embodiment, the bottom of the deep bed denitrification filter is distributed with a back flushing air pipe.
In one embodiment, the inside of the ozone dissolved air oxidation pond is divided into three sections, each section of ozone dissolved air oxidation pond is filled with a catalyst, each section of ozone dissolved air oxidation pond is internally provided with a jet flow feeding pump, and the joint of each section of ozone dissolved air oxidation pond is provided with a water retaining weir.
In one embodiment, the water outlet end of the deep bed denitrification filter is communicated with a water production tank, the water outlet end of the water production tank is communicated with the deep bed denitrification filter through a backwashing pipeline, and the deep bed denitrification filter is communicated with an air blower through an air inlet pipeline.
Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:
the utility model discloses on the basis of original advanced treatment process, optimize and integrate holistic processing structure, realized that same device realizes three kinds of technologies, realize trinity high-efficient advanced treatment, the utility model discloses getting rid of higher efficiency in the aspect of total phosphorus, COD, SS to save structure area, realize cost reduction.
The utility model discloses by sewage plant front end biological treatment play water at first gets into high-efficient coagulating sedimentation tank, get rid of SS and TP through flocculation, pipe chute sedimentation, then get into deep bed denitrification filtering pond through the inside play pond of structures, get rid of TN and SS through filtration and denitrification, go out the direct dissolved air system utilization by ozone of water, through the degree of depth oxidation with ozone, get rid of COD. The advanced treatment of biological treatment effluent of a sewage plant is efficiently and quickly completed, pollutants in water are further removed, and the water quality standard with higher requirements can be met and the effluent is discharged after reaching the standard.
The utility model discloses a mode of three ponds allies oneself with and build, fuse three kinds of technology degree of depth to integrated in a structure, saved area and construction cost. Through high-efficient coagulating sedimentation tank and deep bed denitrification filtering pond and ozone system, TP, TN, SS, COD can be got rid of to the more efficient, the dwell time of reduction sewage, the advanced treatment of the sewage of quick and effectual completion more. Can be applied to urban industrial centers with large and small land areas or plateau areas with small and large land areas.
The following is the operation effect, and the effluent reaches the landmark A class standard in Tianjin.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
FIG. 1 is a schematic structural diagram of an efficient treatment device for industrial sewage provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a flocculation tank provided by the embodiment of the present invention;
FIG. 3 is a process flow diagram of an efficient treatment device for industrial wastewater provided by an embodiment of the present invention;
in the figure: 1. a mixing tank; 2. a mixing tank agitator; 3. connecting a pipeline; 4. a flocculation tank; 5. a flocculation tank stirrer; 6. a return sludge pump; 7. a residual sludge pump; 8. a water collection tank; 9. a water inlet channel; 10. a water inlet gate plate; 11. a water distribution tank; 12. a blower; 13. a backwash pump; 14. an ozone gas dissolving device; 15. a water inlet pipe of the ozone oxidation pond; 16. a jet pump; 17. a coagulating sedimentation tank; 18. a deep bed denitrification filter; 19. a water producing pool; 20. a wastewater tank; 21. an ozone primary oxidation tank; 22. an ozone secondary oxidation pond; 23. an ozone three-stage oxidation pond; 24. a water inlet pipe; 25. a water outlet pipe; 26. a sedimentation tank stirring motor; 27. a double-layer blade stirring rod; 28. a mud scraper motor; 29. an inclined tube of the sedimentation tank; 30. a scraper of the mud scraper; 31. a return sludge pipe; 32. a residual sludge pipe; 33. and (7) retaining walls.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention can be embodied in many other forms than those specifically described herein, and it will be apparent to those skilled in the art that similar modifications can be made without departing from the spirit and scope of the invention.
As shown in FIG. 1 and FIG. 2, the embodiment of the present invention provides a high efficiency treatment device for industrial sewage, which is provided with: a coagulating sedimentation tank 17, a deep bed denitrification filter 18 and an ozone dissolved air oxidation tank;
the coagulating sedimentation tank 17 is provided with a mixing tank 1, a flocculation tank 4 and a coagulating sedimentation tank 17 which are communicated in series, the bottom of the mixing tank 1 is connected with the bottom of the flocculation tank 4 through a pipeline, and the rear end of the mixing tank 1 is connected with a water inlet pipe 24; the water collecting tank 8 of the coagulating sedimentation tank 17 is connected with the water inlet channel 9 of the deep bed denitrification filter 18, and a water inlet gate plate 10 for controlling water inlet is arranged between the water collecting tank 8 and the water inlet channel 9; the deep bed denitrification filter 18 is communicated with the ozone dissolved air oxidation tank through a jet pump 16, and an ozone dissolved air device 14 is arranged on a pipeline communicated with the ozone dissolved air oxidation tank through the jet pump 16.
The embodiment of the utility model provides an in mix 1 and 4 tops in flocculation basin and be provided with respectively and mix 2 and 5 in the flocculation basin agitator, 5 in the flocculation basin agitator are connected with double-deck blade puddler 27 to supporting reaction bucket.
The embodiment of the utility model provides an in the embodiment, coagulating sedimentation tank 17 top is provided with sedimentation tank pipe chute 29, sedimentation tank pipe chute 29 top is provided with triangle-shaped and goes out the basin.
The embodiment of the utility model provides an in 17 bottoms of coagulating sedimentation tank be the funnel structure, funnel structure top is provided with mud scraper, and mud scraper is located coagulating sedimentation tank 17 central authorities, is provided with the mud level meter in coagulating sedimentation tank 17, be provided with excess sludge pump 7 and backward flow sludge pump 6 in coagulating sedimentation tank 17's the ear room.
The back flushing air pipes are distributed at the bottom of the deep bed denitrification filter 18 in the embodiment of the utility model.
The embodiment of the utility model provides an inside three-section that divides altogether of ozone dissolved gas oxidation pond, every section ozone dissolved gas oxidation pond all is filled with the catalyst in, all establishes the efflux in every section ozone dissolved gas oxidation pond and throws the pump, and every section junction is equipped with the manger plate weir.
The embodiment of the utility model provides an in the embodiment of the deep bed denitrification filtering pond 18 go out water end intercommunication and have product pond 19, produce the lower extreme of pond 19 and connect ozone oxidation pond inlet tube 15, the play water end that produces pond 19 passes through backwash pipeline and deep bed denitrification filtering pond 18 intercommunication, deep bed denitrification filtering pond 18 has air-blower 12 through the air inlet pipeline intercommunication.
The utility model discloses a theory of operation is:
the embodiment of the utility model provides a high-efficient processing apparatus for industrial sewage sets up in traditional AAO technology rear end, and the play water of AAO technology gets into this technology after deposiing and carries out advanced treatment. The processing capacity of the embodiment of the utility model is 7500t/d.
The inlet water of the coagulating sedimentation tank 17 is lifted for the second time by a lifting pump. The elevation position of the structure can be adjusted according to actual conditions, gravity flow water inflow is adopted, power loss caused by secondary lifting can be omitted, equipment investment can be reduced, and the method is more economical and efficient.
The coagulating sedimentation tank 17 is divided into 3 tank bodies: the mixing tank 1, the flocculation tank 4 and the coagulation sedimentation tank 17,3 tank bodies are connected in series for operation. There were 2 identical series. The single-series water inlet SS is less than or equal to 25mg/L, TP is less than or equal to 3mg/L, and the water outlet SS is less than or equal to 5mg/L and TP is less than or equal to 0.3mg/L. Firstly, sewage enters a mixing tank 1, the height of the tank body of the mixing tank 1 is 8.8m, the operating liquid level is 8.3m, and the effective volume is 6.9m 3 The retention time is 66.5 seconds, the coagulant is added at the same time, the push type variable frequency mixing tank stirrer 2 is arranged above the mixing tank 1, the rotating speed of the mixing tank stirrer 2 is kept above 300rpm, and only enough mixing strength is needed, the impurity particles, the metal ions and the phosphate can be effectively coagulated to form flocs under the bridge action of the coagulant, so that good effects of removing phosphorus and SS are achieved. The bottom of the mixing tank 1 is connected with the bottom of the flocculation tank 4 by a connecting pipeline 3, the effluent of the mixing tank 1 enters the flocculation tank 4 from bottom to top, the height of the flocculation tank 4 is 8.8 meters, the operating liquid level is 8.2m, and the effective volume is 164m 3 And the retention time is 26.2min, the coagulant aid is added at the same time, a sedimentation tank stirring motor 26 with adjustable frequency conversion is arranged above the flocculation tank 4, and stirring blades connected with the sedimentation tank stirring motor 26 are double-layer blade stirring rods 27 with a double-layer structure and are matched with a reaction barrel.The rotating speed of the stirring motor 26 of the sedimentation tank is less than 30rpm, the stirring speed cannot be too high because the coagulant aid is long-chain macromolecules with polar groups, precipitates can be adsorbed, and floccules with a net structure formed among particles by virtue of the long-chain structure greatly improve the sedimentation speed. Too fast a rotational speed can cause mechanical rotation to break up flocs, which in turn affects the settling rate.
The embodiment of the utility model provides an in coagulating sedimentation tank 17 use the coagulant to be PAC (polyaluminium chloride), and the coagulant aid is PAM (polyacrylamide negative), through diaphragm type dosing pump, pressurizes and gets into the ring of throwing medicine, makes it evenly add in the pond. Wherein the PAC dosage concentration is 5-10%, and the dosage is 20-100 ppm; the dosage concentration of PAM is 0.1-0.3%, and the dosage is 2-5 ppm. Different dosage concentrations and adding concentrations can be adjusted according to the quality of the inlet water. The embodiment of the utility model provides an adopt PAC concentration of making up a prescription 10%, input 25ppm, PAM concentration of making up a prescription 0.1%, input 2ppm. The following are beaker experimental data:
the effluent of the flocculation tank 4 is separated by a retaining wall 33 when entering the coagulation sedimentation tank 17, the effluent slowly crosses the retaining wall 33 from bottom to top and enters the coagulation sedimentation tank,
the bottom of the flocculation tank 4 is separated from the middle of the coagulating sedimentation tank 17 by an unclosed retaining wall 33, the effluent slowly crosses the retaining wall 33 from bottom to top and enters the middle position of the coagulating sedimentation tank 17, the main purpose is to slow down the water flow speed and keep the integrity of formed flocs, the top of the coagulating sedimentation tank 17 is provided with a cross beam for fixing a mud scraper motor 28, and an inclined tube supporting layer is arranged 2 meters below the cross beam. The surface load of the coagulation sedimentation tank 17 is 4.61 m/square meter x h, the operation liquid level is 8m, and water is discharged from the top. A sedimentation tank inclined pipe 29 is arranged in the coagulation sedimentation tank 17, the height is 1m, the installation angle is 60 degrees, and the distance between the installation position and the operation liquid level is 1.4m. When the inflow water passes through the inclined pipe 29 of the sedimentation tank, the inclined pipe 29 of the sedimentation tank is arranged according to the shallow tank theory, so that the sedimentation area is increased, the sedimentation distance is reduced, the efficiency is improved, and the residual sediment in the water can be intercepted. 2 water collecting tanks 8 are arranged above the inclined pipe 29 of the sedimentation tank and fixed on the tank body of the coagulation sedimentation tank 17, triangular sawtooth structures are arranged on the side edges of the water collecting tanks 8, the effluent liquid level is 7.8m, upper clear water enters the water collecting tanks 8 through liquid level difference and is used for collecting effluent of the coagulation sedimentation tank 17, the water collecting tanks 8 are connected with the water inlet channel 9 of the deep-bed denitrification filter 18, and the effluent directly enters the deep-bed denitrification filter 18.
The coagulating sedimentation tank 17 bottom is the funnel structure, and the floccule that intakes deposits because of the action of gravity and gets into the bottom of the pool, and the funnel structure can compress the precipitate, and the mud scraper 30 sets up in the funnel structure top, and the effect is for gathering the precipitate in the bottom funnel, and the mud scraper is located coagulating sedimentation tank 17 central authorities, and the rotational speed is 0.09 commentaries on classics/minute-0.25 commentaries on classics/minute. The lower end of the scraper 30 of the mud scraper is provided with a return sludge pipe 31, and the lower end of the return sludge pipe 31 is provided with an excess sludge pipe 32. Funnel structure collects the department and has row's mud pipe connection screw pump, and funnel mouth department has return line to connect the screw pump. A mud level meter is arranged in the coagulating sedimentation tank 17 for detecting the height of a mud layer, a probe of the mud level meter is arranged below the inclined pipe 29 of the sedimentation tank by a bracket and is 4.1m away from the top of the tank, when the height of the mud exceeds 2.4m, the mud is discharged by a screw pump, and the pump is an excess sludge pump 7 for pumping the mud at the bottom of the funnel. And the return sludge pump 6 that the return line is connected, the effect is taken out the muddy water mixture of funnel mouth and flows back in mixing tank 1, for the coagulation action provides the nucleus of flocculation, promotes coagulation efficiency.
And (3) optimizing the sludge discharge operation of the coagulation sedimentation tank 17: because of the structural characteristics of coagulating sedimentation tank 17, if the row mud is not in time, can lead to the play water index to rise, can't satisfy next production technology requirement, and the indicating effect of current mud level meter is not good, can not be stable accurate suggestion mud layer height.
Two other methods of indicating the height of the mud layer are now provided: the method comprises the following steps: the over-torque of the mud scraper is observed for alarming, and if the mud layer is not high, the mud scraper does not alarm when working normally. If the mud layer is too high, the resistance is increased, and the mud scraper is difficult to operate, the torque is prompted to alarm, and mud needs to be discharged in time. The second method comprises the following steps: through the sampling tube in the ear room, observe the muddy water state, if obviously appear muddy water thickening, the mud needs the mud of in time arranging more water condition less.
The deep bed denitrification filter 18 is a biological filter system capable of removing total nitrogen and SS simultaneously, the quality of inlet water SS is less than or equal to 20mg/L, the quality of TN is less than or equal to 20mg/L, the quality of outlet water SS is less than or equal to 4mg/L, and the quality of TN is less than or equal to 7mg/L.
The water collecting tank 8 of the coagulating sedimentation tank 17 is connected with the water inlet channel 9 of the deep bed denitrification filter 18, the middle part is provided with a water inlet flashboard 10 for controlling water inlet, and the water inlet liquid level is 7.2m. The water inlet and outlet of the deep bed denitrification filter 18 are in an upper inlet and lower outlet mode and are provided with liquid level meters, and the total number of the deep bed denitrification filter is 3. The water inlet channel 9 enters the deep bed denitrification filter 18 through the water distribution tank 11 on the two sides of the top of the filter by turning over the weir, and the water distribution tank 11 is connected to the wastewater pool 20 through a pipeline and is controlled by a valve. The bottom of the deep bed denitrification filter 18 is provided with a rectangular water outlet groove which is connected with a production water tank 19 through a pipeline and is controlled by a valve. An air pipe is arranged above a water outlet groove at the bottom of the deep bed denitrification filter 18 and is fixed at the bottom of the deep bed denitrification filter. The filtering material layer is arranged above the air pipe, the total height is 2.28m, the bottom is a cobble cushion layer of 0.45m, and the quartz sand filtering layer of 2-4 mm is 1.83m.
The process principle is that the effluent of the coagulating sedimentation tank 17 enters the deep bed denitrification filter tank 18 from the upper part of the deep bed denitrification filter tank 18, SS is removed by filtering through a quartz sand filter material, and meanwhile, denitrifying bacteria attached to the filter material convert nitro nitrogen and nitroso nitrogen into nitrogen in an anoxic environment and discharge the nitrogen out of a water body for denitrification. The filtered water is collected and flows out through a water collecting groove 8 at the bottom of the pool and enters a water producing pool 19. The process needs backwashing on the filter material as the head loss of the filter bed is continuously increased along with the increase of SS and biomass intercepted by the filter material. The backwashing water is taken from a water production tank 19 of the deep bed denitrification filter 18, and a backwashing water pipeline is connected with a water outlet tank at the bottom of the deep bed denitrification filter 18 and is controlled by a valve. The pressure is provided by the backwashing pump 13, and the backwashing strength is adjustable. The backwashing gas source is taken from the blower 12, the blower 12 is a Roots blower, Q =33.5m3/min, P =68.6kpa, N =75KW, and the backwashing strength is adjustable. When backwashing is carried out, the water inlet gate plate 10 of the water inlet channel 9 is closed to stop water inlet, the valve from the water outlet tank to the water production tank 19 is closed to stop water production, the valve of a backwashing water pipeline is opened, backwashing water enters the filter tank from the water outlet tank, backwashing of water from bottom to top is carried out according to the reverse water flow direction, backwashing wastewater enters the water distribution tanks 11 at two sides along with the rising of the liquid level, meanwhile, the valve of the water distribution tank 11, which is connected with the wastewater tank 20, is opened, and backwashing wastewater enters the wastewater tank 20. During air washing, air is supplied by the air blower 12 and enters the filter chamber from air pipes distributed at the bottom of the filter chamber for air washing. When air and water are combined, the air and water backwashing operation is simultaneously carried out. The backwash procedure may be performed either automatically or manually.
The back flushing process of the deep bed denitrification filter 18 is about 25 minutes, and in the first stage: air-washing, air-washing strength: 110m 3 /(. Square meter x h) for 5 minutes; and a second stage: air-water combined flushing with air flushing strength of 110m 3 Water flush strength (square meter h): 18.0m 3 /(# h in square meter) for 15 minutes; and a third stage: water washing, water flush strength: 18.0m 3 /(# h square meter) for 5 minutes.
The back flushing starting of the deep bed denitrification filter 18 can be realized by the following three signals:
1) A predetermined time sequence. Mainly carries out back flushing in specified time when the quality of inlet water is stable,
2) A predetermined head loss sequence. And according to the prompt of a liquid level meter in the tank, performing backwashing when the head loss reaches a set value.
3) And manually starting a backwashing program according to the running condition.
And (3) backwashing operation optimization of the deep bed denitrification filter 18: the setting of the backwashing frequency is related to the quality of inlet water, and too frequent backwashing can cause that the biomembrane can not be effectively attached to the filter material, so that denitrifying bacteria are reduced, and the treatment effect on TN is poor. The embodiment of the utility model provides a backwash frequency to deep bed denitrification filtering pond 18 is 3 days a cycle, carries out the backwash to 1 serial filtering pond promptly every day.
The ozone dissolved air oxidation pond has the functions as follows: under the action of ozone, the indexes of COD, SS and the like in water are further reduced, and the ozone required by the reaction is provided by an ozone generator, which is not in the invention. The COD of the inlet water is less than or equal to 65mg/L, and the COD of the outlet water is less than or equal to 25mg/L. The ratio of the ozone adding concentration to the COD removing concentration is not more than 1.
The ozone dissolved gas oxidation pond is divided into 1 seat, the interior of the ozone dissolved gas oxidation pond is divided into three sections, namely an ozone primary oxidation pond 21, an ozone secondary oxidation pond 22 and an ozone tertiary oxidation pond 23, the lower end of the ozone tertiary oxidation pond 23 is connected with a water outlet pipe 25, the filling height of each section of catalyst is 0.5m, and the thickness of a bearing layer is 0.3m. The water producing tank 19 of the deep bed denitrification filter 18 is a water inlet tank of the ozone dissolved air oxidation tank, is connected with a jet pump 16 through a pipeline, and is provided with an ozone dissolved air device 14, the ozone dissolved air device 14 is used for fully contacting ozone and water, and the principle is that the dissolved air device forms negative pressure in the pipeline, and ozone is sucked into the pipeline to be contacted and mixed with water through pressure difference. Each section is provided with a jet pump 16 and an ozone dissolved air device 14 for jet feeding of ozone.
The catalytic oxidation reaction time is 60min, and the total ozone adding amount is as follows: 40mg/L. The operating liquid level of the first section is 4.95m, the operating liquid level of the second section is 4.7m, the operating liquid level of the third section is 4.45m, a water-blocking weir is arranged at the joint of each section, and water enters the next section in a weir turning manner.
The first stage is added with 20mg/L, the oxidation time is 20min, and the parameters of a jet flow adding pump are as follows: the horizontal centrifugal pump Q =346m/H, H =24m, N =37kW, the second stage is added with 10mg/L, the oxidation time is 20min, and the parameters of a jet flow adding pump are as follows: the horizontal centrifugal pump Q =173m/H, H =24m, N =18.5kW, the adding amount in the third section is 10mg/L, the oxidation time is 20min, and the parameters of the jet flow adding pump are as follows: horizontal centrifugal pump Q =173m/H, H =24m, N =18.5kW. The working principle is as follows: the effluent of the deep bed denitrification filter 18 is pumped by a jet pump 16 to pass through an ozone gas dissolving device 14, ozone is dissolved in the sewage, and the ozone is used as a strong oxidant under the action of a catalyst to directly oxidize long-chain organic matters into carbon dioxide and water through the oxidation action of the strong oxidant, so that the organic matters are removed.
Optimizing the operation of the ozone dissolved gas oxidation pond: the ozone oxidation system can be operated intermittently according to the change of the quality of the inlet water, but the operation interval of the ozone cannot exceed 72 hours because the catalyst in the tank is failed due to long-time abandonment. And the operation of intermittent type formula can be more economical and efficient, the embodiment of the utility model discloses adopt the mode of once of 3 days operation promptly, the liquid oxygen consumption that ozone operation 10 hours is about 600kg, and the intermittent type operation both can save liquid oxygen expense, can reduce the power consumption that starts ozone generator and bring again.
The above description is only for the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art should be covered by the protection scope of the present invention within the technical scope of the present invention, any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention.
Claims (7)
1. A high-efficiency treatment device for industrial sewage, characterized in that it is provided with: a coagulating sedimentation tank (17), a deep bed denitrification filter (18) and an ozone dissolved air oxidation tank; the coagulating sedimentation tank (17) is provided with a mixing tank (1), a flocculation tank (4) and the coagulating sedimentation tank (17) which are communicated in series, and the bottom of the mixing tank (1) is connected with the bottom of the flocculation tank (4) through a connecting pipeline (3);
a water collecting tank (8) of the coagulation sedimentation tank is connected with a water inlet channel (9) of the deep bed denitrification filter (18), and a water inlet gate plate (10) for controlling water inlet is arranged between the water collecting tank (8) and the water inlet channel (9); the deep bed denitrification filter (18) is communicated with the ozone dissolved air oxidation tank through a jet pump (16), and an ozone dissolved air device (14) is arranged on a pipeline communicated with the ozone dissolved air oxidation tank through the jet pump (16).
2. The efficient treatment device for industrial sewage according to claim 1, wherein a mixing tank stirrer (2) and a flocculation tank stirrer (5) are respectively arranged above the mixing tank (1) and the flocculation tank (4), and the flocculation tank stirrer (5) is connected with a double-layer blade stirring rod (27) and is matched with a reaction barrel.
3. The high-efficiency treatment device for industrial sewage according to claim 1, wherein a sedimentation tank inclined tube (29) is arranged above the coagulation sedimentation tank (17), and a triangular water outlet groove is arranged above the sedimentation tank inclined tube (29).
4. The efficient treatment device for industrial sewage according to claim 1, wherein the bottom of the coagulation sedimentation tank (17) is of a funnel structure, a mud scraper is arranged above the funnel structure and is positioned in the center of the coagulation sedimentation tank (17), a mud level meter is arranged in the coagulation sedimentation tank (17), and a residual sludge pump (7) and a return sludge pump (6) are arranged in an ear chamber of the coagulation sedimentation tank (17).
5. The high-efficiency treatment device for industrial sewage according to claim 1, wherein a back flushing air pipe is arranged at the bottom of the deep bed denitrification filter (18).
6. The efficient treatment device for the industrial sewage according to claim 1, wherein the inside of the ozone dissolved air oxidation tank is divided into three sections, catalysts are filled in each section of ozone dissolved air oxidation tank, a jet flow feeding pump is arranged in each section of ozone dissolved air oxidation tank, and a water retaining weir is arranged at the joint of each section of ozone dissolved air oxidation tank.
7. The high-efficiency treatment device for industrial sewage according to claim 1, wherein the water outlet end of the deep-bed denitrification filter (18) is communicated with a water production tank (19), the water outlet end of the water production tank (19) is communicated with the deep-bed denitrification filter (18) through a backwashing pipeline, and the deep-bed denitrification filter (18) is communicated with a blower (12) through an air inlet pipeline.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222427390.3U CN217972922U (en) | 2022-09-14 | 2022-09-14 | A high-efficiency processing device for industrial sewage |
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| CN202222427390.3U CN217972922U (en) | 2022-09-14 | 2022-09-14 | A high-efficiency processing device for industrial sewage |
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| CN217972922U true CN217972922U (en) | 2022-12-06 |
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| CN202222427390.3U Active CN217972922U (en) | 2022-09-14 | 2022-09-14 | A high-efficiency processing device for industrial sewage |
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| CN (1) | CN217972922U (en) |
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