CN213977349U - Variable sulfur autotrophic denitrification device and sewage treatment device - Google Patents
Variable sulfur autotrophic denitrification device and sewage treatment device Download PDFInfo
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- CN213977349U CN213977349U CN202022636325.2U CN202022636325U CN213977349U CN 213977349 U CN213977349 U CN 213977349U CN 202022636325 U CN202022636325 U CN 202022636325U CN 213977349 U CN213977349 U CN 213977349U
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Abstract
The utility model relates to a waste water treatment technical field relates to a variable sulphur autotrophic denitrification device and sewage treatment plant. What this application will solve is that the filler volume that drops into in the oxygen deficiency pond is too big, and the propagation of microorganism and the deposit of accessory substance influence the transfer process of solute in the solution, reduce the utilization ratio of material for the not good technical problem of denitrogenation effect in the oxygen deficiency pond. The variable sulfur autotrophic denitrification device is arranged in the anoxic tank, and comprises a frame body and a tank body for accommodating the frame body, wherein a lifting device and a lifting device are arranged on the tank body; the lifting device is connected with the frame body and is used for controlling the frame body to lift relative to the pool body; the lifting device comprises a winding roll movably arranged on the tank body and a rope with one end wound on the winding roll and the other end connected to the frame body, and the additional filler is selectively moved in or out according to the water quality, so that the uniform mixing speed and efficiency of the substrate and the sewage are improved, and the phosphorus and nitrogen release effect of anoxic extraction is further improved.
Description
Technical Field
The utility model relates to a waste water treatment technical field specifically, relates to a variable sulphur autotrophic denitrification module and sewage treatment plant.
Background
The sewage treatment process adopted at home and abroad is various, wherein the sewage treatment process mainly comprises an activated sludge method and a biofilm method, and the common aeration method, oxidation ditch method, A/B method and A method are common2The former belongs to the method of the/O method, and the latter belongs to the method of the bio-disc and the contact oxidation method. An activated sludge process is commonly used as an integrated sewage treatment apparatus, which is an apparatus integrating an anaerobic tank, an anoxic tank, an aerobic tank, and the like. Wherein, the anoxic pond is a biochemical system which generally controls the dissolved oxygen between 0.2 mg/L and 0.5mg/L in terms of relative anaerobism and aerobism; the anoxic tank is a reaction tank without dissolved oxygen but with nitrate; in the denitrification process, the pH value is increased. In the denitrification fieldIn the process, the denitrification effect is mainly achieved, and part of BOD is removed. It also has the function of improving biodegradability through hydrolysis reaction.
In the prior art, a large amount of organic carbon sources need to be consumed by the traditional denitrification technology, in addition, part of areas are influenced by the dietary habits of Chinese residents, C/N in municipal sewage is generally low, and the denitrification effect in an anoxic pond with a traditional structure is extremely poor. Aiming at the problem, the current domestic and foreign researches mainly focus on a method for reducing nitrate by using elemental sulfur, and the nitrate can be reduced into nitrogen by using the elemental sulfur as an electron donor and the nitrate as an electron acceptor under the anoxic or anaerobic condition so as to realize the denitrification process. However, in the prior art, biological carriers are generally simply stacked together, and due to the proliferation of microorganisms and the deposition of by-product calcium sulfate, the transfer process of solutes in a solution can be greatly influenced, so that the utilization rate of sulfur-containing materials is reduced; and the water flow of the anoxic tank is fast, and leap is short when the anoxic tank is in contact with materials, so that the denitrification effect in the anoxic tank is poor.
Through search, the Chinese invention application publication No. CN111056633A, having an application date of 2020, 01/07, has the invention name: a dual-sulfur autotrophic denitrification method and a dual-sulfur autotrophic denitrification tank disclose that a liquid sulfur source and a solid sulfur source are respectively added into the sulfur autotrophic denitrification tank, sewage enters the sulfur autotrophic denitrification tank from a water inlet pipe, autotrophic denitrifying bacteria respectively use the liquid sulfur source and the solid sulfur source as electron donors to carry out denitrification reaction of liquid-liquid mass transfer and denitrification reaction of solid-liquid mass transfer, and purified water after denitrification reaction is discharged from a water outlet.
Disclosure of Invention
1. Problems to be solved
Aiming at the technical problems that in the prior art, when the total nitrogen in an anoxic tank is too high and the C/N ratio is too low, the amount of the added filler is too large and is simply accumulated, so that the proliferation of microorganisms and the deposition of byproducts are caused, the transfer process of solutes in a solution is influenced, the utilization rate of materials is reduced, the water flow of the anoxic tank is fast, the contact time with the materials is short, and the denitrification effect in the anoxic tank is poor. This application has improved the mixing speed and the efficiency of substrate and sewage through set up variable sulphur autotrophic denitrification device in the oxygen deficiency pond, according to the additional filler of immigration or shifting out of quality of water selectivity, and then has improved the phosphorus release denitrogenation effect that the oxygen deficiency was got.
2. Technical scheme
In order to solve the above problem, the utility model provides a technical scheme does:
a variable sulfur autotrophic denitrification device comprises a frame body and a tank body for accommodating the frame body, wherein a lifting device is arranged on the tank body; the lifting device is connected with the frame body and is used for controlling the frame body to lift relative to the pool body; the lifting device comprises a winding roll movably mounted on the tank body and a rope, one end of the rope is wound on the winding roll, and the other end of the rope is connected to the frame body.
Furthermore, the winding roll is movably arranged on the side wall of the tank body; the tank body is provided with a steering wheel set, and the steering wheel set is used for supporting the rope and adjusting the direction of the rope according to the specific installation position of the winding roll.
Further, the steering wheel group includes the first directive wheel of installing on the cell body edge, the second directive wheel of vertical setting for lead the rope to the cell body top from the take-up reel, then by the second directive wheel of installing the cantilever support on the cell body with the rope lead the framework department in the cell body.
Further, the variable sulfur autotrophic denitrification device is of a cubic structure; and meshes are arranged on the side of the variable sulfur autotrophic denitrification device.
Further, the mesh is arranged on a bottom plate of the variable sulfur autotrophic denitrification device; the sidewall of the bottom of the variable sulfur autotrophic denitrification denitrogenation device extends inwards to form a supporting structure, and the bottom plate is erected by the supporting structure.
A sewage treatment device, which uses the variable sulfur autotrophic denitrification device.
Further, the device also comprises an anaerobic pool and an aerobic pool; the anaerobic tank, the aerobic tank and the anoxic tank are sequentially arranged along the water flow direction.
Further, the system also comprises a preselection tank, a second aerobic tank, a second anoxic tank and a third aerobic tank; the pre-selection tank, the anaerobic tank, the aerobic tank, the anoxic tank, the second aerobic tank, the second anoxic tank and the third aerobic tank are sequentially arranged along the water flow direction.
Furthermore, the pools are connected through overflow devices.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
(1) the utility model relates to a variable sulfur autotrophic denitrification device, which comprises a frame body and a tank body for accommodating the frame body, wherein a lifting device is arranged on the tank body; the lifting device is connected with the frame body and is used for controlling the frame body to lift relative to the pool body; the lifting device comprises a winding roll movably mounted on the tank body and a rope, one end of the rope is wound on the winding roll, and the other end of the rope is connected to the frame body. By arranging the variable sulfur autotrophic denitrification device which can be moved into and out of the tank body, excessive filler amount is not required to be added at the initial stage of activated sludge culture, so that the activated sludge is not simply accumulated to cause the proliferation of microorganisms and the deposition of byproducts, the transfer process of solute in the solution is not influenced, the utilization rate of materials is improved, additional filler is selectively moved into or out according to water quality, the uniform mixing rate and efficiency of the substrate and sewage are improved, and the phosphorus release denitrification effect of an anoxic zone is further improved. Meanwhile, when the carbon source in the water is too low and the quantitative filler is not enough to support the treatment amount, the variable sulfur autotrophic denitrification nitrogen removal device is moved in, so that the nitrogen and phosphorus removal efficiency can be rapidly improved in a short time.
(2) The utility model relates to a variable sulfur autotrophic denitrification device, wherein a winding roll is movably arranged on the side wall of a tank body; the tank body is provided with a steering wheel set, and the steering wheel set is used for supporting the rope and adjusting the direction of the rope according to the specific installation position of the winding roll. The steering wheel set comprises a first steering wheel arranged on the edge of the pool body and a vertically arranged second steering wheel, the rope is guided to the upper portion of the pool body from the winding roll, and then the rope is guided to the frame body of the pool body through the second steering wheel arranged on the cantilever support of the pool body. So set up, make things convenient for variable sulphur autotrophic denitrification device to move in and shift out, operating personnel only need operate outside the cell body, has guaranteed safety.
(3) The variable sulfur autotrophic denitrification device of the utility model is a cubic structure; and meshes are arranged on the side of the variable sulfur autotrophic denitrification device. So that the sewage in the tank body and the sewage in the device can be exchanged conveniently.
(4) The utility model relates to a variable sulfur autotrophic denitrification device, the mesh is arranged on the bottom plate of the variable sulfur autotrophic denitrification device; the sidewall of the bottom of the variable sulfur autotrophic denitrification denitrogenation device extends inwards to form a supporting structure, and the bottom plate is erected by the supporting structure. So set up, conveniently change the bottom plate to adapt to different filler sizes.
Drawings
FIG. 1 is a schematic view of a process flow of a low carbon-nitrogen ratio high ammonia nitrogen sewage treatment system;
FIG. 2 is a top view of a low carbon-nitrogen ratio high ammonia nitrogen sewage treatment system;
FIG. 3 is a schematic view of a first perspective of a low carbon-nitrogen ratio high ammonia nitrogen sewage treatment system;
FIG. 4 is a schematic view of a second perspective of a low carbon-nitrogen ratio high ammonia nitrogen sewage treatment system;
fig. 5 is a schematic view of the aeration apparatus according to the present application from a first perspective.
In the figure:
100. a water inlet pipe; 110. a water outlet pipe; 120. a device room;
200. pre-selecting a pool; 300. an anaerobic tank;
400. an aerobic tank; 410. an aeration device; 411. a back hook structure; 412. a waterproof raised head; 413. a rotating shaft;
500. an anoxic tank; 510. a quantitative sulfur autotrophic denitrification device; 511. a slide rail; 512. a secondary track; 513. adjusting the distance of the bolt; 514. a limiting block; 520. a variable sulfur autotrophic denitrification device; 521. a frame body; 522. a take-up reel; 523. a rope; 524. a first steering wheel; 525. a second steering wheel;
600. a second aerobic tank; 700. a second anoxic tank; 800. a third aerobic tank; 900. a sedimentation filtration disinfection system.
Detailed Description
The invention is further described with reference to specific examples.
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The treatment process of the sewage with low carbon-nitrogen ratio and high ammonia nitrogen comprises the following steps:
1) pumping the sewage from which suspended matters are removed by a pretreatment system such as a grating, a sand setting or an adjusting tank into a first section (whether the sewage is pumped into the anoxic tank 500 or not can be set or cancelled according to the actual carbon-nitrogen ratio condition in the inlet water) of the pre-selection tank 200, the anaerobic tank 300 and the anoxic tank 500 in proportion, wherein the proportion of the sewage pumped into each section can be correspondingly adjusted according to the water quality condition of the inlet water and the outlet water;
2) the sewage treated by the pre-selection tank 200 in the step 1 enters an anaerobic tank 300 for treatment, and anaerobic phosphorus release is carried out under the action of phosphorus accumulating bacteria;
3) the sewage treated by the anaerobic tank 300 in the step 2 enters an aerobic tank 400 for treatment, organic pollutants in the sewage are removed by the action of aerobic microorganisms, ammonia nitrogen is nitrified, and phosphorus is biologically removed; the aerobic tank 400 adopts hydrophilic and biodegradable bio-doubling filler to strengthen the nitrification and phosphorus absorption; the aerobic tank 400 adopts stepped aeration, so that dissolved oxygen in the aerobic tank 400 can be effectively prevented from being brought to the anoxic tank 500, the adverse effect of the dissolved oxygen on the primary denitrification is relieved, and the denitrification effect of the system is improved;
4) the sewage treated by the aerobic tank 400 in the step 3 enters an anoxic tank 500 for treatment, and the sulfur autotrophic denitrification microorganisms are cultured for denitrification to remove total nitrogen under the condition of not adding extra carbon source by arranging a quantitative sulfur autotrophic denitrification device 510 and a variable sulfur autotrophic denitrification device 520 in the anoxic tank 500; the anoxic pond 500 can selectively put or take out the variable sulfur autotrophic denitrification nitrogen removal device 520 according to the actual water quality condition of the inlet water, firstly, a certain amount of raw sewage water is pumped, the carbon source in the raw water is fully utilized for denitrification, when the total nitrogen in the inlet water is higher, the C/N ratio is too low, and the carbon source in the raw water is only enough for biological phosphorus removal, the variable sulfur autotrophic denitrification nitrogen removal device 520 can be put in at the moment, and the sulfur autotrophic nitrogen removal filler is directly utilized for efficient denitrification.
5) The sewage treated by the anoxic tank 500 in the step 4 enters a second aerobic tank 600 for treatment, organic pollutants in the sewage are further removed by the action of aerobic microorganisms, and the residual ammonia nitrogen is nitrified and simultaneously biologically dephosphorized; hydrophilic and biodegradable bio-doubling fillers are adopted in the second aerobic tank 600 to strengthen the nitrification and phosphorus absorption effects; the second aerobic tank 600 can also adopt stepped aeration, so that the dissolved oxygen in the second aerobic tank 600 is prevented from being brought to the second anoxic tank 700, the adverse effect of the dissolved oxygen on the secondary denitrification is relieved, and the denitrification effect of the system is enhanced.
6) The sewage treated by the second aerobic tank 600 in the step 5 enters a second anoxic tank 700 for treatment, and the sulfur autotrophic denitrification microorganisms are cultured for denitrification to remove total nitrogen under the condition of not adding extra carbon source by arranging a quantitative sulfur autotrophic denitrification device 510 and a variable sulfur autotrophic denitrification device 520 in the second anoxic tank 700;
7) and (3) the sewage treated by the second anoxic tank 700 in the step (6) enters a third aerobic tank 800 for treatment, nitrogen formed by denitrification is blown off, and residual pollutants in water are removed in an enhanced manner.
8) The sewage treated by the third aerobic tank 800 in the step 7 enters a precipitation filtration disinfection system 900 for treatment, when the total phosphorus concentration index in the effluent exceeds the standard, a phosphorus removal agent can be added for chemical phosphorus removal, and the return sludge of the sedimentation tank is returned to the front end pre-selection tank 200 in multiple sections; when the concentration index of suspended matters in the effluent after solid-liquid separation exceeds the standard, the sewage treated by the sedimentation tank can enter a filtering system and then enter a disinfection system for treatment;
9) the water is treated by the precipitation, filtration and disinfection system 900 in the step 8, so that the quality of the discharged water can be effectively guaranteed, and the discharged water is ensured to reach the standard.
Example 2
40-50% of sewage after larger suspended matters and floating matters are removed by pretreatment systems such as a grating, a sand setting/regulating tank and the like is pumped into a preselection tank 200, 60-50% of sewage is pumped into an anaerobic tank 300, the proportion of the sewage pumped into each section can be adjusted according to the subsequent actual operation condition, wherein the retention time of the preselection tank 200 is 0.5-1 h, the activated sludge flows back to the head end preselection tank 200, the quick adsorption effect of the activated sludge can be fully utilized, the removal of soluble organic matters is accelerated, the organic matters which are difficult to degrade are well hydrolyzed, the propagation of filamentous bacteria is effectively inhibited, and the treatment effect of the subsequent biochemical treatment system is enhanced.
The sewage treated by the pre-selection tank 200 sequentially enters an anaerobic tank 300, an aerobic tank 400, an anoxic tank 500, a second aerobic tank 600 and a second anoxic tank 700, organic pollutants in the sewage are efficiently removed by utilizing the action of microorganisms, the ammonia nitrogen is subjected to nitrification and denitrification, and the biological phosphorus removal is carried out at the same time; the residence time of the anaerobic tank 300 is 1-2 h, the total residence time of the aerobic tank 400 and the second aerobic tank 600 is 20-25 h, and the total residence time of the anoxic tank 500 and the second anoxic tank 700 is 30-35 h.
Hydrophilic and biodegradable bio-doubling fillers are added into the aerobic tank 400 and the second aerobic tank 600, so that the nitrification and phosphorus absorption are enhanced, the microbial purification is improved, and the filler filling rate is 30%; the aerobic tank 400 and the second aerobic tank 600 are equally divided into two small sections, a gradient aeration means is adopted, the residence time of the aerobic tank in the second section is 1-2 h, aeration can be reduced or cancelled according to the situation, dissolved oxygen in the aerobic tank 400 and the second aerobic tank 600 can be effectively prevented from being brought to the anoxic tank 500 and the second anoxic tank 700, the adverse effect of the dissolved oxygen on two-stage denitrification is relieved, and the denitrification effect of the system is improved.
Wherein the anoxic tank 500 and the second anoxic tank 700 are both provided with a sulfur autotrophic denitrification module and are both suspendedHanging a sulfur autotrophic denitrification filler, inoculating sludge of sulfur autotrophic denitrification bacteria under the condition of not additionally adding a carbon source, and culturing sulfur autotrophic denitrification microorganisms to carry out denitrification to remove total nitrogen; the total amount of the filler added in the anoxic tank 500 and the second anoxic tank 700 is about 1.2t (10 m for sewage treatment scale)3Calculated by/d).
And (3) the sewage treated by the second anoxic tank 700 enters a third aerobic tank 800 for treatment, the residence time of the third aerobic tank 800 is 1-2 h, nitrogen formed by denitrification is blown off, the sewage is further subjected to enhanced removal of pollutants in water and then enters a precipitation filtration disinfection system for treatment, the hydraulic load on the surface of the sedimentation tank is 0.5m3/m 2h, a phosphorus removal agent is added for chemical phosphorus removal, and the return sludge of the sedimentation tank flows back to the front-end preselection tank 100.
And the effluent of the filtering system enters a disinfection system, and the effluent is discharged after reaching the standard.
The specific treatment effect is shown in table 1.
Table 1 example 2 results of treatment
Example 3
20% of sewage after being removed with larger suspended matters and floating matters by pretreatment systems such as a grating, a sand setting/regulating tank and the like is pumped into a preselection tank 100, 50% of sewage is pumped into an anaerobic tank 300, 30% of sewage is pumped into a first section of an anoxic tank 500, the proportion of the sewage pumped into each section can be adjusted according to the subsequent actual operation condition, the residence time of the preselection tank 100 is 0.5-1 h, the activated sludge flows back to the head end preselection tank 100, the rapid adsorption effect of the activated sludge can be fully utilized, the removal of soluble organic matters is accelerated, the organic matters which are difficult to degrade are well hydrolyzed, the propagation of filamentous bacteria is effectively inhibited, and the treatment effect of a subsequent biochemical treatment system is enhanced.
The sewage treated by the pre-selection tank 100 sequentially enters an anaerobic tank 300, an aerobic tank 400, an anoxic tank 500, a second aerobic tank 600 and a second anoxic tank 700, organic pollutants in the sewage are efficiently removed by utilizing the action of microorganisms, the ammonia nitrogen is subjected to nitrification and denitrification, and biochemical phosphorus removal is carried out at the same time; the residence time of the anaerobic tank 300 is 1-2 h, the total residence time of the aerobic tank 400 and the second aerobic tank 600 is 10-12 h, and the total residence time of the anoxic tank 500 and the second anoxic tank 700 is 12-15 h.
Hydrophilic and biodegradable bio-doubling fillers are added into the aerobic tank 400 and the second aerobic tank 600, so that the nitrification and phosphorus absorption are enhanced, the microbial purification is improved, and the filler filling rate is 20%; the aerobic tank 400 and the second aerobic tank 600 are equally divided into two small sections, a gradient aeration means is adopted, the residence time of the aerobic tank in the second section is 1-2 h, aeration can be reduced or cancelled according to the situation, dissolved oxygen in the aerobic tank 400 and the second aerobic tank 600 can be effectively prevented from being brought to the anoxic tank 500 and the second anoxic tank 700, the adverse effect of the dissolved oxygen on two-stage denitrification is relieved, and the denitrification effect of the system is improved.
Wherein the anoxic tank 500 is divided into two sections, wherein the first section pumps 30% of raw sewage water, fully utilizes carbon sources in the raw water for denitrification, and the residence time of the first section is 2 hours; the second section is hung with the sulfur autotrophic denitrification filler for efficient denitrification, under the condition that no additional carbon source is added, sludge containing sulfur autotrophic denitrification bacteria is inoculated, sulfur autotrophic denitrification microorganisms are cultured for denitrification to remove total nitrogen, the residence time of the second section is 4 hours, and the denitrification efficiency is improved and the operating cost is saved by efficiently utilizing the carbon source in raw water and combining the sulfur autotrophic efficient denitrification module; the total amount of the filler added in the anoxic tank 500 and the second anoxic tank 700 is about 0.6t (10 m for sewage treatment scale)3Calculated by/d).
The sewage treated by the second anoxic tank 700 enters a third aerobic tank 800 for treatment, the residence time of the third aerobic tank 800 is 1-2 h, nitrogen formed by denitrification is blown off, and the sewage enters a precipitation filtration and disinfection system for treatment after further enhanced removal of pollutants in water, and the surface hydraulic load of the precipitation tank is 0.6m3/m2H, adding a phosphorus removal agent to carry out chemical phosphorus removal, and returning the sedimentation tankThe flowing sludge flows back to the front end preselection tank 100.
And the effluent of the filtering system enters a disinfection system, and the effluent is discharged after reaching the standard.
The specific treatment effect is shown in table 2.
Table 2 example 3 treatment results
Example 4
The system for treating the sewage with low carbon-nitrogen ratio and high ammonia nitrogen comprises a preselection tank 200, an anaerobic tank 300, an aerobic tank 400, an anoxic tank 500, a second aerobic tank 600, a second anoxic tank 700 and a third aerobic tank 800; the preselection tank 200, the anaerobic tank 300, the aerobic tank 400, the anoxic tank 500, the second aerobic tank 600, the second anoxic tank 700 and the third aerobic tank 800 are sequentially arranged along the water flow direction.
The aerobic tank 400 comprises an aeration device 410, wherein the aeration device 410 is a vertical plate; the bottom of the aeration device 410 is connected with the bottom wall of the aerobic tank 400, and two ends of the aeration device are respectively connected with the side wall of the aerobic tank 400; the aeration device 410 is lower than the aerobic tank 400, and divides the aerobic tank 400 into different areas. By dividing the aerobic tank 400 into different areas, the dissolved oxygen forms a physical gradient in the aerobic tank 400, thereby reducing the dissolved oxygen balance caused by series flow in the aerobic tank 400, but the problem that the dissolved oxygen of the sewage flowing into the subsequent anoxic tank 500 is too high due to high water quality and relatively high aeration rate is possible, so that the sewage treatment equipment can stably operate.
The number of the aeration devices 410 is at least two, and the aeration devices are sequentially arranged along the sewage flow direction and the height of the aeration devices is gradually reduced. By such arrangement, the aeration rate can be increased at the front part of the aerobic tank 400, and the aeration rate can be reduced at the rear part, and each section has own hydraulic retention time due to physical obstruction, so that the dissolved oxygen is stable, and the dissolved oxygen can be ensured to decrease progressively in the aerobic tank. The cross section of the aeration device 410 is similar to a 7 shape; an aeration hole is arranged on one side surface of the aeration device 410 close to the water source. So set up for different aeration rates can be adopted in different separate regions, and set up different aeration time, form the gradient of aeration rate. The top of the aeration device 410 is bent downwards to form a hook structure 411, and a plurality of water blocking protrusions 412 are arranged on the surface of the hook structure. The water-blocking protrusion 412 enables water flow to be scattered when the water flow falls down, so that the aeration effect is further enhanced, and the energy consumption of the aeration device is reduced.
The hook structure 411 is fixedly installed on the rotating shaft 413, and is installed on the aeration device 410 through the rotating shaft 413. The rotating shaft 413 is installed on an installation hole formed in the top of the aeration device 410 in a transition fit manner. So set up for can adjust the angle that the rivers fall according to the size of concrete rivers, increase the availability factor of the protruding head 412 that blocks water. And an anti-skid rubber sleeve is arranged at the position where the rotating shaft 413 is matched with the mounting hole at intervals. The back hook is easier to be fixed at a certain angle by the damping action of the anti-slip rubber sleeve.
The device comprises an anoxic tank 500, wherein a quantitative sulfur autotrophic denitrification device 510 is arranged on the side wall of the anoxic tank 500; the quantitative sulfur autotrophic denitrification and denitrification device 510 is internally filled with sulfur autotrophic denitrification and denitrification filler, and in an actual application scene, the quantitative sulfur autotrophic denitrification and denitrification device 510 can be arranged on one side far away from the aerobic tank 400, so that the influence of high dissolved oxygen in the sewage at the overflow positions of the aerobic tank 400 and the anoxic tank 500 on the activated sludge in the anoxic tank 500 is reduced; at least one side wall of the quantitative sulfur autotrophic denitrification nitrogen removal device 510 can slide, so that the change of the internal space of the quantitative sulfur autotrophic denitrification nitrogen removal device 510 is realized, when the quantitative sulfur autotrophic denitrification nitrogen removal device is used, the internal space can be properly adjusted to be small in the initial stage of activated sludge culture, the enrichment efficiency of activated sludge is high, and when the amount of the activated sludge reaches a certain degree, the internal space can be adjusted to be large so as to adapt to the requirement of the nitrogen and phosphorus removal treatment amount of the anoxic pond 500, comprehensively, the growth efficiency of the sludge is accelerated, and the efficiency of the anoxic pond 500 is improved; at least one side surface of the quantitative sulfur autotrophic denitrification nitrogen removal device 510 is provided with a hole structure, and the hole structure facilitates the exchange between the sewage in the quantitative sulfur autotrophic denitrification nitrogen removal device 510 and the sewage in the anoxic tank 500.
The side wall of the anoxic pond 500 is provided with a slide rail 511; the quantitative sulfur autotrophic denitrification device 510 is arranged on the sliding rail 511 in a sliding way. Make things convenient for quantitative sulfur autotrophic denitrification denitrogenation device 510 to remove in oxygen deficiency pond 500 is inside to adapt to the needs of different treatment period denitrogenation processes, in earlier stage of handling, can move quantitative sulfur autotrophic denitrification denitrogenation device 510 to the one side of keeping away from good oxygen pond 400, activated sludge grows in the oxygen deficiency pond 500 with higher speed, and later stage moves quantitative sulfur autotrophic denitrification denitrogenation device 510 to oxygen deficiency pond 500 middle part, and rivers exchange with higher speed improves denitrogenation efficiency.
The quantitative sulfur autotrophic denitrification nitrogen removal device 510 is of an open cubic structure, and sulfur autotrophic denitrification nitrogen removal fillers are conveniently added or replaced while water flow exchange is increased. A secondary rail 512 is arranged in the quantitative sulfur autotrophic denitrification nitrogen removal device 510; one side surface of the quantitative sulfur autotrophic denitrification nitrogen removal device 510 is a movable surface, and the movable surface is movably blocked in a sliding supporting mode through the secondary rail 512, so that the change of the internal space of the quantitative sulfur autotrophic denitrification nitrogen removal device 510 is realized. The tip of secondary track 512 is equipped with stopper 514, the size of stopper 514 is greater than the groove structure size of activity face and secondary track 512 complex, realizes that stopper 514 removes the spacing of limit to the activity face. The quantitative sulfur autotrophic denitrification device 510 is internally penetrated by a distance adjusting bolt 513, one end of the distance adjusting bolt 513 penetrates through the movable surface, the other end of the distance adjusting bolt 513 is rotatably arranged on the opposite surface of the movable surface, the distance adjusting bolt 513 is movably clamped on the opposite surface and cannot axially move relative to the opposite surface, and the movable surface is pushed and pulled to move by rotating the distance adjusting bolt 513.
The variable sulfur autotrophic denitrification nitrogen removal device 520 comprises a frame 521 and a tank body containing the frame 521, wherein a lifting device is installed on the tank body. The lifting device is connected with the frame 521 and used for controlling the frame 521 to lift relative to the tank body. The lifting device comprises a winding roll 522 and a rope 523 which are movably arranged on the tank body, one end of the rope 523 is wound on the winding roll 522, and the other end of the rope is connected to the frame body. By arranging the variable sulfur autotrophic denitrification device 520 capable of being moved into and out of the tank body, excessive filler is not required to be added at the initial stage of activated sludge culture, so that the activated sludge is not simply accumulated to cause the proliferation of microorganisms and the deposition of byproducts, the transfer process of solute in the solution is not influenced, the utilization rate of materials is improved, additional filler is selectively moved into or out according to water quality, the uniform mixing rate and efficiency of the substrate and sewage are improved, and the phosphorus-releasing denitrification effect of an anoxic zone is improved. Meanwhile, when the carbon source in the water is too low and the quantitative filler is not enough to support the treatment amount, the variable sulfur autotrophic denitrification nitrogen removal device 520 is moved in, so that the nitrogen and phosphorus removal efficiency can be rapidly improved in a short time.
The winding roll 522 is movably arranged on the side wall of the tank body; the tank body is provided with a steering wheel set, and the steering wheel set is used for supporting the rope 523 and adjusting the trend of the rope 523 according to the specific installation position of the winding roll 522. Specifically, the steering wheel group comprises a first steering wheel 524 and a second steering wheel 525 which are vertically arranged and mounted on the edge of the tank body. The first steering wheel 524 is used for guiding the rope 523 from the winding roll 522 to the upper part of the tank body, and then the second steering wheel 525 supported by a cantilever mounted on the tank body guides the rope 523 to the frame 521 in the tank body and is connected with the frame 521, so that the lifting control of the frame 521 is realized. So set up, make things convenient for variable sulphur autotrophic denitrification device 520 to move in and shift out, operating personnel only need operate outside the cell body, has guaranteed safety.
The variable sulfur autotrophic denitrification device 520 has a cubic structure. Meshes are arranged on the side of the variable sulfur autotrophic denitrification device 520. Sewage in the tank body and sewage in the device are exchanged through the meshes.
Further, the mesh is arranged on the bottom plate of the variable sulfur autotrophic denitrification device 520; the sidewall of the bottom of the variable sulfur autotrophic denitrification nitrogen removal device 520 extends inwards to form a support structure, and the bottom plate is erected by the support structure. So set up, the bottom plate is laid in a flexible way, conveniently changes the bottom plate that has different mesh models to adapt to different filler sizes.
Claims (9)
1. The utility model provides a variable sulphur autotrophic denitrification device, includes framework (521) and holds the cell body of framework (521), its characterized in that: a lifting device and a lifting device are arranged on the tank body; the lifting device is connected with the frame body (521) and is used for controlling the frame body (521) to lift relative to the tank body; the lifting device comprises a winding roll (522) movably arranged on the tank body and a rope (523) with one end wound on the winding roll (522) and the other end connected to the frame body.
2. The variable sulfur autotrophic denitrification device according to claim 1, wherein: the winding roll (522) is movably arranged on the side wall of the tank body; the tank body is provided with a steering wheel set, and the steering wheel set is used for supporting the rope (523) and adjusting the trend of the rope (523) according to the specific installation position of the winding roll (522).
3. The variable sulfur autotrophic denitrification device according to claim 2, wherein: the steering wheel set comprises a first steering wheel (524) arranged on the edge of the tank body and a vertically arranged second steering wheel (525) and is used for guiding a rope (523) to the upper side of the tank body from a winding roll (522), and then guiding the rope (523) to a frame body (521) in the tank body by the second steering wheel (525) arranged on the tank body and supported by a cantilever.
4. The variable sulfur autotrophic denitrification device according to claim 2, wherein: the variable sulfur autotrophic denitrification device (520) is of a cubic structure; meshes are arranged on the side of the variable sulfur autotrophic denitrification device (520).
5. The variable sulfur autotrophic denitrification device according to claim 4, wherein:
the mesh is arranged on the bottom plate of the variable sulfur autotrophic denitrification device (520); the sidewall of the bottom of the variable sulfur autotrophic denitrification denitrogenation device (520) extends inwards to form a supporting structure, and the bottom plate is erected by the supporting structure.
6. A sewage treatment device is characterized in that: use of a variable sulfur autotrophic denitrification device according to any one of claims 1-5.
7. The sewage treatment apparatus according to claim 6, wherein: the anaerobic tank (300) and the aerobic tank (400) are also included; the anaerobic tank (300), the aerobic tank (400) and the anoxic tank (500) are sequentially arranged along the water flow direction.
8. The sewage treatment apparatus according to claim 7, wherein: the system also comprises a preselection tank (200), a second aerobic tank (600), a second anoxic tank (700) and a third aerobic tank (800); the preselection tank (200), the anaerobic tank (300), the aerobic tank (400), the anoxic tank (500), the second aerobic tank (600), the second anoxic tank (700) and the third aerobic tank (800) are sequentially arranged along the water flow direction.
9. The sewage treatment apparatus according to any one of claims 7 or 8, wherein: the pools are connected through overflow devices.
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