CN109835980B - Semi-fixed biological contact oxidation reactor - Google Patents
Semi-fixed biological contact oxidation reactor Download PDFInfo
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- CN109835980B CN109835980B CN201910267691.4A CN201910267691A CN109835980B CN 109835980 B CN109835980 B CN 109835980B CN 201910267691 A CN201910267691 A CN 201910267691A CN 109835980 B CN109835980 B CN 109835980B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention relates to a semi-fixed biological contact oxidation reactor, which comprises an aerobic reaction chamber, wherein the aerobic reaction chamber comprises a first shell and a first filler frame. The first housing comprises a containing cavity with an opening at the top, and the first filler frame is arranged in the containing cavity and can rotate in the horizontal direction. The first packing frame is provided with packing, and the part of the first packing frame with the packing reciprocates above and below the highest water level line of the accommodating cavity through rotation of the first packing frame. The reactor of the invention adopts the semi-fixed first filler frame in the aerobic reaction chamber, and can realize stirring and directly expose part of the filler to the air by utilizing the rotation of the first filler frame so as to increase the concentration of dissolved oxygen in water, thereby replacing an aeration device in the traditional reactor and greatly reducing energy consumption and operating cost.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a semi-fixed biological contact oxidation reactor.
Background
With the rapid development of the economy of China and the continuous promotion of urbanization footsteps, the living standard of people is higher and higher. But the environmental problem is more and more serious, the sewage discharge is more and more, and in addition, the use of a large amount of fertilizers in agriculture leads to more and more nitrogen-containing substances in the water body. According to investigation, the proportion of people drinking shallow wells and rivers in China reaches about 80%, 75% of water in people drinking water is seriously polluted, and besides, the water drunk by about 1.61 hundred million people is polluted by organic matters. In recent years, with the continuous development of our country's industry, the discharge amount of our country's wastewater and sewage is increasing, and as can be seen from statistical data, the increase rate of the discharge amount of these wastewater and sewage is 18 hundred million meters per year3The daily discharge amount of wastewater produced in industrial production in China and daily sewage of people is about 1.64 hundred million m3. In this data, 80% of the water is absentThe treated water is directly discharged into the water area, which causes that the river reach above 1/3 in China is seriously polluted, the polluted proportion of urban water area is 90%, and the proportion of the important town water source which is seriously not in line with the drinking water standard reaches 50%.
In the face of such serious water pollution, the current treatment methods include physical methods, chemical methods, biological methods, and the like. The biofilm method is widely applied to the field of sewage treatment due to the advantages of small secondary pollution, relatively low energy consumption and the like. The multistage biological contact oxidation method is a wide technology for treating wastewater by using a biological membrane. The multistage biological contact oxidation method is a biological treatment technology between an activated sludge method and a biological filter. Therefore, the multi-stage biological contact oxidation method has many advantages, such as simple structure and process, small occupied area, no sludge expansion and the like. The method has the advantages of simple process, low maintenance cost, strong water impact resistance and the like. Therefore, the method is widely applied. The method is widely applied to the treatment of micro-polluted raw water, the treatment of domestic sewage and the treatment of industrial wastewater. The traditional multistage biological contact oxidation reactor consists of four parts, namely a filler, a tank body, a water distribution device and an aeration device.
The biological contact oxidation method carries out wastewater treatment through the biological membrane, the comprehensive aerobic action on the biological membrane and the nitrification. The organic matter is oxidatively decomposed by aerobic microorganisms under aerobic conditions, the concentration of the organic matter is reduced, and the microorganisms proliferate. Organic matters in the sewage are firstly adsorbed on the surface of a biological membrane and are contacted with the surface of microbial cells, micromolecular organic matters directly penetrate through cell walls to enter the microbial bodies under the action of permease, and macromolecular organic matters need to be decomposed into micromolecules under the action of extracellular hydrolase and then are taken into the microbial bodies.
Although the multistage biological contact oxidation method is widely applied, has a plurality of advantages. There are many problems in practical engineering applications especially when treating high-concentration waste water,
1. energy consumption problem; although the multistage biological contact oxidation reactor has the advantages of simple structure, low maintenance cost and the like, the reactor needs to be provided with an aeration device, the indirect increase is the operation cost of the system, and in the aeration process, the aeration device placed in the reactor is easily influenced by settled sludge and the like and blocked, so that the concentration of dissolved oxygen in water is influenced, and the treatment performance of the reactor is reduced.
2. Dissolved oxygen problems in the compartment; dissolved oxygen in the multistage biological contact oxidation reactor is a very important parameter, and the content of the dissolved oxygen directly influences the activity of the sludge in the aerobic compartment. In addition, in the actual operation process, along with the increase of sludge, the dissolved oxygen in water is continuously reduced, thereby affecting the performance of the whole reactor. The bottom of the conventional reactor is partially deposited with sludge, which blocks the aeration device and, if not cleaned in time, causes the entire aeration system to be seriously damaged, thereby increasing its maintenance cost.
3. Sludge deposition problems in the compartment; after the anaerobic compartment in the multistage biological contact oxidation reactor is operated for a long time, sludge can be deposited at the bottom of the reaction chamber. The heating device at the bottom can be buried by the deposited sludge, thereby affecting the overall heating effect, even burning the heating device to cause safety problems such as fire and the like.
4. Economic problems; although the multistage biological contact oxidation reactor has a series of advantages of small volume, simple structure, low maintenance cost and the like. However, in the practical engineering application process, the aeration device in the reactor is damaged to a certain extent, the maintenance of the aeration device is relatively complex, the whole reactor needs to be cleaned, and thus the whole operation cost is greatly increased.
Disclosure of Invention
Technical problem to be solved
The invention provides a semi-fixed biological contact oxidation reactor, aiming at solving the problems of high energy consumption, lower dissolved oxygen content, higher operating cost and lower treatment performance of the reactor in the prior art.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the invention provides a semi-fixed biological contact oxidation reactor, which comprises an aerobic reaction chamber, wherein the aerobic reaction chamber comprises a first shell and a first filler frame; the first housing comprises an accommodating cavity with an opening at the top, and a first filler frame is arranged in the accommodating cavity and can rotate in the horizontal direction; the first packing frame is rotatably connected with the first shell, packing is arranged on the first packing frame, and the part, with the packing, on the first packing frame reciprocates above and below the highest water level line of the accommodating cavity through the rotation of the first packing frame; the aerobic reaction chamber also comprises a first rotating shaft which is horizontally arranged and is rotatably connected with the first shell; the first packing frame is fixedly connected with the first rotating shaft and comprises a first rotating frame and a second rotating frame which are distributed at intervals along the circumferential direction of the first rotating shaft; the aerobic reaction chamber further comprises a spring damping piece, one end of the spring damping piece is fixedly connected with the first shell, and the other end of the spring damping piece is fixedly connected with the second rotating frame; and/or the aerobic reaction chamber further comprises a balancing weight which is arranged on the second rotating frame. According to the invention, the first rotating frame is of a semi-closed box structure and is used for collecting sewage to be treated, the second rotating frame is of a frame structure, and the second rotating frame is provided with a filler.
According to the invention, the aerobic reaction chamber further comprises a first driving device; the first driving device drives the first rotating shaft to rotate.
According to the invention, the cross sections of the first rotating frame and the second rotating frame are two symmetrically arranged fan-shaped sections in a vertical plane, and the central angle of each fan-shaped section is 90 degrees.
According to the invention, the aerobic reaction chamber further comprises a limiting member; the limiting part is fixed in the first shell and is positioned on the water inlet side of the aerobic reaction chamber, and when the first filling frame is in a vertical state, the second rotating frame is abutted against the limiting part.
According to the invention, the aerobic reaction chamber also comprises a water distribution device and a water outlet tank; in an initial state, the water outlet end of the water distribution device is positioned above the water inlet of the first rotating frame; the water outlet groove is arranged at the highest water level, and the position of the water distribution device is higher than that of the water outlet groove.
According to the invention, the anaerobic reaction chamber is also included, and comprises a second shell and a second filler frame; the second filling frame is vertically arranged in the second shell and can rotate along a second rotating shaft which is vertically arranged, the second filling frame is provided with filling materials, and the water outlet end of the anaerobic reaction chamber is communicated with the water inlet end of the aerobic reaction chamber.
According to the invention, the bottom of the second stuffing frame is provided with a plurality of bulges.
According to the invention, the anaerobic reaction chamber further comprises a second driving device, a time relay and a speed change device; the time relay is arranged on a control circuit of the second driving device, and the second driving device drives the second rotating shaft to rotate through the speed changing device.
(III) advantageous effects
The invention has the beneficial effects that:
the reactor of the invention is designed to be semi-fixed by the first filler frame in the aerobic reaction chamber, can realize stirring by utilizing the rotation of the first filler frame and directly expose partial filler to the air to achieve a certain aeration effect so as to increase the concentration of dissolved oxygen in water, thereby leading the dissolved oxygen of the whole reactor to achieve an optimal reaction state, replacing an aeration device in the traditional reactor and greatly reducing energy consumption and operating cost. Due to the adoption of the structure, the defect that the dissolved oxygen in water is insufficient due to blockage of the aeration device is avoided, the microorganisms on the surface of the first filler frame can uniformly receive oxygen, the defect that the local aeration is insufficient due to different placement positions and air pressures of the aeration device is avoided, and the content of the dissolved oxygen in the aerobic reaction chamber is improved.
Simultaneously can be so that the quality of water in the aerobic reaction chamber comparatively even at rotatory in-process, even quality of water can provide a suitable growing environment for the microorganism on the biomembrane, and the rotation of first filler frame can also increase the rivers shearing force on filler surface, and then promotes the wholeness ability of reactor, improves the treatment effeciency. The whole reactor has simple structure and higher activity, compared with the traditional multistage biological contact oxidation reactor, the invention has higher removal efficiency and lower energy consumption, and the whole operation cost is reduced to some extent because an aeration device is cancelled to be more convenient to maintain, thus the invention can be widely applied to the relevant fields of pretreatment of water of a micro-pollution source, urban domestic sewage, industrial wastewater and the like, and is particularly suitable for livestock wastewater with low COD, high ammonia nitrogen and the like.
Drawings
FIG. 1 is a schematic structural view of an aerobic reaction chamber provided in the following example;
FIG. 2 is a top view of the aerobic reaction chamber shown in FIG. 1;
FIG. 3 is a schematic structural view of the water distribution device shown in FIG. 2;
FIG. 4 is a top view of the water distribution device shown in FIG. 3;
FIG. 5 is a schematic structural view of a semi-stationary biological contact oxidation reactor provided in the following example;
fig. 6 is a top view of the reactor shown in fig. 5.
[ description of reference ]
1: an aerobic reaction chamber;
11: a first housing; 111: an upper housing; 112: a lower support frame;
12: a first packing frame; 121: a first rotating frame; 122: a second rotating frame;
13: a first rotating shaft; 14: a spring damping member; 15: a limiting member;
16: a water distribution device; 161: a water storage tank; 162: a water distributor; 1621: a water distribution tank; 17: a water outlet groove;
2: an anaerobic reaction chamber; 21: a second housing; 22: a second packing frame; 221: a turntable; 222: a vertical rod; 23: a second rotation shaft; 24: a water inlet; 25: and (7) a water outlet.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1 and 2, the present embodiment provides a semi-stationary biological contact oxidation reactor, comprising an aerobic reaction chamber 1, wherein the aerobic reaction chamber 1 comprises a first housing 11 and a first filler frame 12.
Wherein the first housing 11 includes a receiving cavity with an opening at the top, and the first stuffing frame 12 is disposed in the receiving cavity and can rotate in the horizontal direction. The first stuffing frame 12 is rotatably connected with the first shell 11, stuffing is arranged on the first stuffing frame 12, and the part, with the stuffing, on the first stuffing frame 12 reciprocates above and below the highest water level of the containing cavity through the rotation of the first stuffing frame 12.
Specifically, the first housing 11 is generally composed of an upper housing 111 and a lower support frame 112, the upper housing 111 has the accommodating cavity, the upper housing 111 may be shaped as a lower half shown in fig. 1 to form a tank body for accommodating sewage, the upper half only needs to protect a water inlet device and a water inlet of the first rotating frame 121, and the lower support frame 112 is mainly used for supporting on a work bench or the ground. Of course, the shape of the first housing 11 may be designed according to actual needs, and this embodiment is merely an example, which is not limited thereto.
From this, the reactor in this application is through designing the first filler frame 12 in the aerobic reaction chamber 1 for semi-stationary type, utilizes the rotation of first filler frame 12 just can realize the stirring and with some filler direct exposure in the middle of the air and reach certain aeration effect for increase aquatic dissolved oxygen's concentration, thereby make the dissolved oxygen of whole reactor reach an optimum reaction state, replaced the aeration equipment in the traditional reactor, greatly reduced energy consumption and working costs. Due to the structure, the shortage of dissolved oxygen in water caused by blockage of the aeration device is avoided, the microorganisms on the surface of the first filling frame 12 can uniformly receive oxygen, the shortage of local aeration caused by different placement positions and air pressures of the aeration device is avoided, and the content of the dissolved oxygen in the aerobic reaction chamber 1 is improved.
Simultaneously can make the quality of water in the aerobic reaction chamber 1 comparatively even at rotatory in-process, even quality of water can provide a suitable growing environment for the microorganism on the biomembrane, and the rotation of first filler frame 12 can also increase the rivers shearing force on filler surface, and then promotes the wholeness ability of reactor, improves the treatment effeciency. Whole reactor simple structure, the activity is higher, compares with traditional multistage biological catalytic oxidation reactor, and this application has the efficiency of getting rid of higher relatively and lower energy consumption to owing to cancelled aeration equipment and be convenient for maintain more, thereby make holistic working costs descend to some extent, but wide application in relevant fields such as preliminary treatment, city domestic sewage and industrial waste water of the water of little pollution sources, especially be applicable to livestock wastewater such as low COD high ammonia nitrogen.
In the embodiment of the present application, the aerobic reaction chamber 1 further comprises a first rotation shaft 13 horizontally disposed, and the first rotation shaft 13 is rotatably connected to the first housing 11. The first stuffing frame 12 is fixedly connected to the first rotating shaft 13, and includes a first rotating frame 121 and a second rotating frame 122 spaced apart from each other in the circumferential direction of the first rotating shaft 13. First swivel mount 121 is semi-enclosed box structure for collect pending sewage, and second swivel mount 122 is frame construction, is equipped with the filler on the second swivel mount 122.
Specifically, both ends of the first rotating shaft 13 are rotatably connected to the first housing 11 through bearings, and the first rotating frame 121 is provided with a water inlet having a shape and size suitable for receiving the sewage transferred from the water inlet device described below, and facilitating the outflow of the sewage when the first rotating frame 121 rotates downward. The rotation of the first rotating shaft 13 can be realized by the weight of the water inflow body and the structural characteristics of the first stuffing frame 12, and can also be realized by a first driving device described below.
In order to prevent leakage of sewage in the bottom tank and rusting of the bearings, the first rotation shaft 13 is located above the highest water level line and provided with a space.
In practical applications, in order to further enhance the content of dissolved oxygen in the aerobic reaction chamber 1, the frame of the second rotating frame 122 is formed by blades with a predetermined length. Thus, the blades can increase the turbulence of the water flow in the aerobic reaction chamber 1, thereby increasing the content of dissolved oxygen in the aerobic reaction chamber 1.
Aiming at the condition that the first rotating shaft 13 rotates through the weight of the water inlet body and the structural characteristics of the first filling frame 12, the method comprises the following specific steps:
in the initial state, the first rotating frame 121 is located above the first rotating frame 122, and in any state, a part of the first stuffing frame 12 is located below the highest water level of the water contained in the containing cavity, and another part of the first stuffing frame is located above the highest water level. The initial state here means a state when there is no sewage in the first rotating frame 121.
Thus, in the initial state, the first rotating frame 121 is located above the second rotating frame 122, and the second rotating frame 122 is partially located in the bottom tank body. When the sewage treatment device starts to work, sewage to be treated flows into the first rotating frame 121 through a water inlet device, when the sewage in the first rotating frame 121 increases to reach a certain weight, the first rotating frame 121 rotates downwards, and then the second rotating frame 122 is driven to rotate upwards, at the moment, a biological film on a filler on the second rotating frame 122 is exposed in the air, and therefore a certain aeration effect is achieved. After the first rotating frame 121 rotates downwards, the sewage in the first rotating frame 121 will slowly flow out of the bottom tank body, when the sewage in the first rotating frame 121 gradually decreases to a certain weight, the first rotating frame 121 rotates upwards by virtue of the weight of the second rotating frame 122, the second rotating frame 122 rotates downwards, and then the second rotating frame 122 returns to the bottom tank body again.
From this, utilize mutually supporting of first swivel mount 121 and second swivel mount 122 for in whole course of the work, utilize the water weight of intaking and the structural feature of itself of first filler frame 12 not only to realize the periodic oscillation of first filler frame 12 self, the surface of filler is constantly washed away to the water moreover, has increased surface fluid shearing force, thereby the higher rivers shearing force can be quick get rid of biological surface resultant and make the treatment effeciency of whole reactor obtain further promotion. Meanwhile, the aerobic contact section can realize aerobic reaction by utilizing the characteristics of water flow propulsion and the structure of the aerobic contact section, so that the energy consumption is greatly reduced.
Because the rotation of the first rotating frame 121 and the second rotating frame 122 is realized by the weight of the water in the first rotating frame 121 and the weight of the filler on the second rotating frame 122, in order to ensure the smooth rotation of the whole first filler frame 12, the aerobic reaction chamber 1 further comprises a spring damping member 14 and/or a counterweight, and in practical application, at least one of the spring damping member 14 and the counterweight can be selected according to actual needs.
One end of the spring damping member 14 is fixedly connected to the first housing 11, and the other end is fixedly connected to the second rotating frame 122. The balancing weight is disposed on the second rotating frame 122, and the balancing weights with different weights can be disposed at different positions of the frame of the second rotating frame 122 according to actual conditions, so as to balance the weight of the filler.
In practical application, the whole first stuffing frame 12 is cylindrical and arranged along the horizontal direction, and in the vertical plane, the cross sections of the first rotating frame 121 and the second rotating frame 122 are two sectors symmetrically arranged relative to the first rotating shaft 13, and the central angle of the sectors is 90 °.
Thus, in the initial state, the first rotating frame 121 is positioned directly above the second rotating frame 122; in the operating state, the first and second rotating frames 121 and 122 are constantly swung with respect to the first rotating shaft 13. At this time, the bottom of the upper housing 111 of the first housing 11 is preferably in a circular arc shape to match the first stuffing frame 12. Of course, in practical applications, the shapes of the first rotating frame 121 and the second rotating frame 122 may be selected according to practical needs, and this embodiment is merely an example, and is not limited thereto.
In the case where the first rotating frame 121 and the second rotating frame 122 are both fan-shaped, as shown in fig. 1, in order to prevent the second rotating frame 122 from being located not directly below the first rotating frame 121 but at the left lower side when the first rotating frame 121 and the second rotating frame 122 are rotated to the initial state position, the first rotating frame 121 cannot receive sewage delivered by a water inlet device described below, and the whole first stuffing frame 12 cannot normally rotate. The aerobic reaction chamber 1 further comprises a limiting member 15, the limiting member 15 is fixed in the first housing 11 and located on the water inlet side of the aerobic reaction chamber 1, and when the first filler frame 12 is in a vertical state, the second rotating frame 122 abuts against the limiting member 15.
Specifically, the included angle between the connecting line of the limiting member 15 and the center point of the first rotating shaft 13 and the vertical plane is 0 to 45 °, and generally, the limiting member 15 is a cross bar, so that the second rotating frame 122 and the limiting member 15 cannot rotate in another direction after abutting to each other to limit the rotation of the second rotating frame 122.
For the case where the first rotation shaft 13 is rotated by the first driving device, the following is specific:
the aerobic reaction chamber 1 further comprises a first driving device, and the first driving device is connected with the first rotating shaft 13 and is used for driving the first rotating shaft 13 to rotate. Therefore, related parameters such as the swing frequency, the residence time and the like of the first filling frame 12 can be controlled more accurately, so that the requirement that microorganisms on the biological film need oxygen in water is met.
It should be noted that, when the first driving device is provided, the swing of the first feeding frame 12 is completely driven by the first driving device, and at this time, the above-mentioned limiting member 15, the spring damping member 14 or the counterweight is not required to be provided, and the smooth operation of the whole aerobic reaction can be ensured only by the control of the first driving device. Of course, when the first driving device drives the first rotating shaft 13 to rotate, the first stuffing frame 12 may include two frame bodies, i.e., the first rotating frame 121 and the second rotating frame 122, or may be designed as one frame body, and the shape of the frame body may also be designed according to actual needs.
The first driving device is generally selected from a first motor, and in order to better control the oxygen required by aerobic microorganisms, a control circuit of the first motor is further provided with a time relay so as to set the first driving motor to move intermittently and also realize positive and negative rotation. The first motor with intermittent motion can not only reduce energy consumption, but also control the time of the microorganisms on the filling frame exposed to the air, thereby controlling the oxygen required by aerobic microorganisms. Meanwhile, in the process of periodic movement-standing, the first filler frame 12 in intermittent movement can enable water flow in the reactor to continuously wash the surface of the filler, so that products on the surface of the filler can be quickly removed, and the reaction performance is improved.
Further, in order to facilitate the adjustment of the rotating speed of the first filling frame 12 according to different water quality conditions in the reactor, a speed change device is further arranged between the first driving device and the first rotating shaft 13, when the water quality of the inlet water is viscous, and the viscosity coefficient is large, the rotating speed of the first filling frame 12 can be properly improved, so that the water flow shearing force on the surface of the filling material is increased, and the generated attachments on the surface of the filling material are rapidly removed by utilizing the strong water flow shearing force. In addition, an online monitoring system can be introduced to adjust different rotating speeds in time according to different water quality conditions, so that the overall reaction performance of the reactor is improved.
In the implementation process, the whole aerobic reaction chamber 1 further includes a water distribution device 16 and a water outlet tank 17, and in the initial state, the water outlet end of the water distribution device 16 is located above the water inlet of the first rotating frame 121. The water outlet groove 17 is arranged at the highest water level, and the position of the water distribution device 16 is higher than that of the water outlet groove 17.
In practical application, referring to fig. 3 and 4, the water distribution device 16 includes a water storage tank 161 and a water distributor 162, the water distributor 162 is disposed obliquely and provided with a plurality of water distribution tanks 1621 disposed in parallel and at intervals, one end of each water distribution tank 1621 is communicated with the tank body of the water storage tank 161, and the other end is communicated with the water inlet of the first rotating frame 121.
Specifically, a water distribution device 16 is generally fixed above the first housing 11 for delivering the sewage to be treated to the first rotating frame 121. The extending direction of the body of the water storage tank 161 is parallel to the axial direction of the first rotating shaft 13, the extending direction of the plurality of water distribution grooves 1621 is perpendicular to the extending direction of the body of the water storage tank 161, and the top end of the water distribution groove 162 is higher than the bottom surface of the body of the water storage tank 161 and lower than the highest point of the body of the water storage tank 161.
Thus, when the sewage to be treated is delivered into the water storage tank 161, the water flows into each water distribution tank 1621 of the water distributor 162 through the tank body of the water storage tank 161, so that the water flows into the first rotating frame 121 more uniformly, and the whole structure is simple and the operation is simple and convenient. Of course, in practical applications, the water inlet device may have other structures according to actual needs, and this embodiment is merely an example.
In practical application, in order to further improve the treatment efficiency of the aerobic reaction chamber 1, a first heating device is further arranged in the aerobic reaction chamber 1. The first heating device is preferably arranged below the first stuffing frame 12 and is spaced from the bottom of the first shell 11, and is heated to a certain temperature according to actual needs.
Further, referring to fig. 5 and 6, the reactor further includes an anaerobic reaction chamber 2, and the anaerobic reaction chamber 2 includes a second housing 21 and a second packing frame 22. The second filling frame 22 is vertically arranged in the second shell 21 and can rotate along a second rotating shaft 23 which is vertically arranged, filling is arranged on the second filling frame 22, and the water outlet end of the anaerobic reaction chamber 2 is communicated with the water inlet end of the aerobic reaction chamber 1.
Specifically, the anaerobic reaction chamber 2 is provided with a water inlet 24 and a water outlet 25, and the water inlet 24 is higher than the water outlet 25. The water outlet 25 is used as the water outlet of the anaerobic reaction chamber 2, and the water storage tank 161 of the water distribution device 16 is used as the water inlet of the aerobic reaction chamber 1. The second rotating shaft 23 is a light hollow shaft, and is rotatably connected to the top of the second casing 21 through a bearing, and a bottom end of the second rotating shaft 23 is spaced from the bottom of the second casing 21. The second stuffing frame 22 is generally cylindrical and comprises two rotating discs 221 and a plurality of vertical rods 222, the two rotating discs 221 are fixedly connected with the upper portion and the bottom portion of the second rotating shaft 23 respectively, two ends of the plurality of vertical rods 222 are fixed with the two rotating discs 221 respectively, and the vertical rods 222 are generally stainless steel rods.
Therefore, by designing the second stuffing frame 22 in the anaerobic reaction chamber 2 to be semi-fixed, the water quality in the anaerobic reaction chamber 2 can be relatively uniform by using the rotation of the second stuffing frame 22, and a suitable growing environment is provided for the microorganisms on the biofilm. Meanwhile, the water flow shearing force on the surface of the filler can be increased by rotating the second filler frame 22, and biological surface products can be quickly removed by the higher water flow shearing force, so that the overall performance of the reactor is improved. The microorganism on the surface of the filler is more compact through continuous scouring of water flow, and then is not easy to fall off to generate sediment.
In practical application, in order to prevent sludge from depositing on the bottom of the anaerobic reaction chamber 2 and affecting the overall operation effect of the reaction chamber, a plurality of protrusions are arranged on the bottom of the second filling frame 22. The protrusion may be formed by extending the bottom end of the vertical rod 222 out of the outer side of the bottom of the turntable 221, or may be formed by additionally providing a protrusion structure on the outer side of the bottom of the lower turntable 221. And then can play certain stirring effect in the rotatory in-process of whole second filler frame 22 to prevent that the mud on impurity and the biomembrane in aquatic from droing the deposit in the bottom, thereby influence the wholeness ability of reactor.
The above-mentioned protrusions are preferably in the form of blades, so that the rotating blades can effectively prevent bottom sludge from depositing during the continuous rotation of the second stuffing frame 22. And in the process of blade rotation, the water in the anaerobic reaction chamber 2 can move in a vertical direction, so that the water quality of the water in the anaerobic reaction chamber 2 is uniform, the uniform water quality is more favorable for the growth of the biofilm on the second filling frame 22, and the overall performance of the reactor can be rapidly improved.
In a possible implementation manner, in order to balance the gravity of the rotating disc 221 in the vertical direction, a floating ball is further provided on the vertical rod 222.
In a specific implementation process, the anaerobic reaction chamber 2 further includes a second driving device, generally using a second motor, and the second driving device is connected to the second rotating shaft 23 and is configured to drive the second rotating shaft 23 to rotate, so as to drive the second filling frame 22 to rotate.
In a preferred embodiment, the anaerobic reaction chamber 2 further comprises a time relay and a speed change device, the time relay is arranged on a control circuit of the second driving device, so that the second driving device is set to be in an intermittent motion mode, and the water flow in the reactor can continuously wash the surface of the packing during the periodic motion-standing process of the second packing frame 22 in the intermittent motion mode, so that products on the surface of the packing can be quickly removed, and the reaction performance is improved.
The speed change device is arranged between the second driving device and the second rotating shaft 23, and the second driving device drives the second rotating shaft 23 to rotate through the speed change device, so that the rotating speed of the second filling frame 22 can be adjusted according to different water quality conditions in the reactor. In addition, an online monitoring system can be introduced into the anaerobic reaction chamber 2 to adjust different rotating speeds in time according to different water quality conditions, so that the overall reaction performance of the reactor is improved.
Therefore, after the sewage to be treated is pumped into the anaerobic reaction chamber 2 through the water pump, the second driving device at the top of the anaerobic reaction chamber 2 drives the second rotating shaft 23 to rotate, and the rotating speed can be properly adjusted according to the water quality viscosity. When the water in the anaerobic reaction chamber 2 reaches the level of the water outlet 25, the water flow will automatically flow into the next stage, i.e. the aerobic reaction chamber 1, through the water outlet 25.
In order to further enhance the treatment efficiency of the anaerobic reaction chamber 2, a second heating device is further provided in the anaerobic reaction chamber 2. The second heating device is preferably arranged below the second packing frame 22 and spaced from the bottom of the second casing 21 to prevent the bottom of the casing from overheating and causing damage to the second heating device or the reactor, and the second heating device is generally heated to a certain temperature according to actual needs.
The second heating device preferably adopts a ring heater to facilitate the normal operation of the protrusion arranged at the bottom of the second stuffing frame 22, and generally, the ring heater should be spaced from the protrusion.
In addition, in practical application, a plurality of anaerobic reaction chambers 2 which are connected in series in sequence can be arranged in the whole reactor, and then the anaerobic reaction chambers are connected with an aerobic reaction chamber 1 in series; or an anaerobic reaction chamber 2 can be arranged and then is connected with a plurality of aerobic reaction chambers 1 which are connected in series in sequence; or a plurality of anaerobic reaction chambers 2 which are connected in series in sequence can be arranged and then are connected in series with a plurality of aerobic reaction chambers 1 which are connected in series in sequence; generally, the shell of each anaerobic reaction chamber 2 or aerobic reaction chamber 1 is provided with an opening, and water flow can naturally flow from the previous reaction chamber to the next reaction chamber through the mode of overflow at the upper end or communication at the lower end. Of course, a plurality of anaerobic reaction chambers 2 and a plurality of aerobic reaction chambers 1 may be arranged in series in another staggered manner to further improve the treatment effect, which is only an example and is not limited in this embodiment.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, so that any person skilled in the art can make modifications or changes in the technical content disclosed above. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (8)
1. A semi-stationary biological contact oxidation reactor, comprising an aerobic reaction chamber (1), characterized in that the aerobic reaction chamber (1) comprises a first housing (11) and a first filler frame (12);
the first shell (11) comprises a containing cavity with an opening at the top, and the first stuffing frame (12) is arranged in the containing cavity and can rotate in the horizontal direction;
the first packing frame (12) is rotatably connected with the first shell (11), packing is arranged on the first packing frame (12), and the part, with the packing, on the first packing frame (12) reciprocates above and below the highest water level of the containing cavity through the rotation of the first packing frame (12);
the aerobic reaction chamber (1) also comprises a first rotating shaft (13) which is horizontally arranged and is rotatably connected with the first shell (11);
the first packing frame (12) is fixedly connected with the first rotating shaft (13) and comprises a first rotating frame (121) and a second rotating frame (122) which are distributed at intervals along the circumferential direction of the first rotating shaft (13);
the aerobic reaction chamber (1) further comprises a spring damping piece (14), one end of the spring damping piece (14) is fixedly connected with the first shell (11), and the other end of the spring damping piece is fixedly connected with the second rotating frame (122);
and/or the aerobic reaction chamber (1) further comprises a balancing weight which is arranged on the second rotating frame (122).
2. The semi-stationary biological contact oxidation reactor according to claim 1,
the first rotating frame (121) is of a semi-closed box structure and is used for collecting sewage to be treated, the second rotating frame (122) is of a frame structure, and a filler is arranged on the second rotating frame (122).
3. The semi-stationary biological contact oxidation reactor according to claim 2,
in a vertical plane, the cross section of the first rotating frame (121) and the cross section of the second rotating frame (122) are two symmetrically arranged fan-shaped, and the central angle of each fan-shaped is 90 degrees.
4. A semi-stationary biological contact oxidation reactor according to claim 3, wherein said aerobic reaction chamber (1) further comprises a restriction (15);
the limiting piece (15) is fixed in the first shell (11) and located on the water inlet side of the aerobic reaction chamber (1), and when the first filling frame (12) is in a vertical state, the second rotating frame (122) is abutted to the limiting piece (15).
5. The semi-stationary biological contact oxidation reactor according to claim 2, wherein the aerobic reaction chamber (1) further comprises a water distribution device (16) and a water outlet tank (17);
in an initial state, the water outlet end of the water distribution device (16) is positioned above the water inlet of the first rotating frame (121);
the water outlet groove (17) is arranged at the highest water level, and the position of the water distribution device (16) is higher than that of the water outlet groove (17).
6. A semi-stationary biological contact oxidation reactor according to any one of claims 1 to 5, further comprising an anaerobic reaction chamber (2), said anaerobic reaction chamber (2) comprising a second housing (21) and a second packing frame (22);
the second filling frame (22) is vertically arranged in the second shell (21) and can rotate along a second rotating shaft (23) which is vertically arranged, filling materials are arranged on the second filling frame (22), and the water outlet end of the anaerobic reaction chamber (2) is communicated with the water inlet end of the aerobic reaction chamber (1).
7. The semi-stationary biological contact oxidation reactor according to claim 6,
the bottom of the second filling frame (22) is provided with a plurality of bulges.
8. The semi-stationary bio-contact oxidation reactor according to claim 6, wherein said anaerobic reaction chamber (2) further comprises a second driving means, a time relay and a speed changing means;
the time relay is arranged on a control circuit of the second driving device, and the second driving device drives the second rotating shaft (23) to rotate through the speed changing device.
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