Improved integrated sewage treatment system

Abstract

The utility model belongs to a sewage treatment device, and particularly relates to an improved sewage integrated treatment system. Comprising an anaerobic tank, an aerobic tank, an anoxic tank and a sedimentation tank which are connected in sequence, combined fillers for accommodating microorganisms are hung in the anaerobic tank, the aerobic tank and the anoxic tank, a material input end of the treatment system is communicated with a sewage output end, effluent of the sedimentation tank is communicated with the outside, and aeration devices for supplying different gas sources to the anaerobic tank, the aerobic tank and the anoxic tank respectively; and the detector for monitoring water quality, gas and material flow, the vortex shedding flowmeter and the electromagnetic flowmeter are electrically connected with the PLC respectively. The utility model effectively solves the problems of low carbon source utilization rate, uncontrollable aeration rate and the like in the prior art, and has the advantages of high carbon source utilization rate, controllable aeration rate, uniform stirring, low failure rate and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sewage treatment device, in particular to an improved sewage integrated treatment system. BACKGROUND

[0002] The current urban sewage treatment is faced with the following problems, one is that the sewage discharge standard is becoming more and more strict, and it is difficult to remove nitrogen and phosphorus deeply, and two is that it is difficult to optimize the process operation and reduce carbon and consumption of sewage treatment. In order to facilitate the upgrading and reconstruction of sewage treatment plant, and remove nitrogen and phosphorus deeply, the current widely used nitrogen and phosphorus removal equipment mainly passes through continuous flow anaerobic / anoxic / aerobic (AAO) biological reaction tank, and the above-mentioned equipment has the following problems: one is that the dissolved oxygen carried by internal reflux destroys the anoxic environment of the pre-anoxic zone, and consumes part of the carbon source of the influent, which leads to the shortening of the actual denitrification reaction time and the reduction of the carbon source utilization efficiency, and the carbon source needs to be supplemented; two is that in order to ensure the dissolved oxygen content in the anaerobic, aerobic and anoxic tanks, the stirring mode is usually mechanical stirring, which has the problems of uneven mechanical stirring, uncontrollable aeration amount, high failure rate and complex maintenance. Therefore, it is necessary to develop a sewage treatment device with the functions of reducing carbon and consumption and deep nitrogen removal.

[0003] The applicant has not found any patent document related to the present application in the domestic patent database. SUMMARY

[0004] The utility model discloses a kind of improved sewage integrated treatment systems, by reasonably arranging anaerobic tank, aerobic tank and anoxic tank, using different gas supply and other technical measures, it can be converted into carbon source in the anaerobic tank in the organic matter in influent, when there is no carbon source supply outside, using stored carbon source to carry out denitrification in the anoxic tank, to realize the purpose of reducing carbon and consumption, controlling dissolved oxygen concentration and aeration amount.

[0005] The overall technical concept of the utility model is as follows:

[0006] Improved sewage integrated treatment system, including anaerobic tank, aerobic tank, anoxic tank and sedimentation tank which are communicated with each other, the material input end of the treatment system is communicated with the sewage output end, the effluent of the sedimentation tank is communicated with the outside, and the gas source output end of the aeration device is communicated with the inside of the aerobic tank;Among them:

[0007] A, the material input end of anaerobic tank is communicated with the sewage output end, anaerobic tank, aerobic tank and anoxic tank are in a one-word structure connected in order and separated by a partition, the partition is provided with a water passing hole for communicating the left and right tank bodies, and the material output of the anoxic tank is communicated with the sedimentation tank through a pipeline;The combined filler for accommodating microorganisms is hung in the anaerobic tank, aerobic tank and anoxic tank;

[0008] B, the aeration device includes nitrogen generator and fan, nitrogen generator is communicated with aeration head in anaerobic tank, anoxic tank through aeration pipe and valve, fan is communicated with aeration head in aerobic tank through aeration pipe and valve;

[0009] C, anaerobic tank, aerobic tank, anoxic tank and sedimentation tank are equipped with detection instrument for detecting water quality, anaerobic tank, aerobic tank, anoxic tank are equipped with vortex flowmeter for showing gas flow, sewage output end and sludge output end of sedimentation tank are equipped with electromagnetic flowmeter for showing material flow, detection instrument, vortex flowmeter and electromagnetic flowmeter are electrically connected with PLC controller.

[0010] The specific technical concept of the utility model also has:

[0011] In order to better realize the material conveying between anaerobic tank, aerobic tank and anoxic tank, the preferred technical implementation mode is that first baffle is arranged between anaerobic tank and aerobic tank, and first water passing hole for communicating anaerobic tank and aerobic tank is formed in the first baffle;Second baffle is arranged between aerobic tank and anoxic tank, and second water passing hole for communicating aerobic tank and anoxic tank is formed in the second baffle.

[0012] In order to better realize the material conveying between anoxic tank and sedimentation tank, the preferred technical implementation means is that material output end of anoxic tank is communicated with center water inlet pipe arranged in sedimentation tank through anoxic tank outlet pipe.

[0013] In order to facilitate the dispersion and deposition of solid materials in sewage, and achieve better sewage purification treatment effect, the preferred technical implementation mode is that material outlet of center water inlet pipe is provided with reflection plate.

[0014] In order to facilitate the conveying, flow display and control of sewage, the preferred technical implementation means is that material input end of anaerobic tank is communicated with sewage output end through water inlet pump, first electromagnetic flowmeter, valve and sewage pipe.

[0015] In order to facilitate the conveying, flow display and control of sludge in sedimentation tank, the preferred technical implementation means is that sludge output end of sedimentation tank is communicated with anaerobic tank and anoxic tank through sludge backflow pump, electromagnetic flowmeter, valve and sludge pipe respectively.

[0016] In order to convert and store residual organic matter in sludge in sedimentation tank as carbon source, and further utilize stored carbon source for denitrification in anoxic tank when there is no external carbon source supply, improve sludge utilization rate, the preferred technical implementation means is that sludge of sedimentation tank has two output ends, one output end is communicated with material input end of anaerobic tank through first sludge backflow pump, second electromagnetic flowmeter, valve and sludge pipe;The other output end is communicated with material input end of anoxic tank through second sludge backflow pump, third electromagnetic flowmeter, valve and sludge pipe.

[0017] Because the detector, the vortex flowmeter, the electromagnetic flowmeter and the PLC controller are electrically connected, therefore, according to the dynamic monitoring data change of the sewage, the opening and closing and the opening amount of the valve in the sludge pipe, the sewage pipe and the aeration pipe can be controlled, and more preferably, the valve can be selected as an electromagnetic valve and is electrically connected with the PLC controller, so that the opening and closing and the opening amount of the valve can be controlled through the PLC controller, because it belongs to the prior art, the applicant will not repeat it here.

[0018] The main function of the detector and the vortex flowmeter is to monitor the water quality in the anaerobic tank, the aerobic tank and the anoxic tank, and the gas supply amount is monitored, and the opening and closing and the opening amount of the valve in the sludge pipe, the sewage pipe and the aeration pipe are controlled according to the monitoring data, so that a better sewage treatment effect is achieved, and preferably, the detector comprises a first dissolved oxygen on-line detector and a water inlet total phosphorus on-line detector arranged in the anaerobic tank, a second dissolved oxygen on-line detector and an aerobic zone ammonia nitrogen on-line detector arranged in the aerobic tank, a third dissolved oxygen on-line detector and an anoxic zone total nitrogen on-line detector arranged in the anoxic tank, and a water outlet total phosphorus on-line detector arranged in the sedimentation tank, and the vortex flowmeter comprises a first vortex flowmeter communicated with the aeration pipe of the anaerobic tank, a second vortex flowmeter communicated with the aeration pipe of the aerobic tank and a third vortex flowmeter communicated with the aeration pipe of the anoxic tank.

[0019] The main function of the aeration head is to ensure the aeration amount while meeting the need of material mixing, in order to achieve better use effect, preferably, the aeration head adopts a disc type micro-porous aerator arranged in the anaerobic tank, the aerobic tank and the anoxic tank.

[0020] The applicant needs to explain that:

[0021] In the description of the utility model, the terms "input", "output" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of simplifying the description of the utility model, and does not indicate or imply that the device or element indicated must have a specific orientation, structure and operation, therefore, it cannot be understood as a limitation on the utility model. The terms "first", "second", "third" are only used to distinguish, and cannot be understood as implying importance

[0022] The technical progress achieved by the utility model lies in:

[0023] 1、The utility model discloses a sewage treatment device, which comprises an anaerobic tank, an aerobic tank and an anoxic tank arranged in sequence, a sludge pipe, a sewage pipe and an aeration pipe communicated with the anaerobic tank, the aerobic tank and the anoxic tank, a detector, a vortex flowmeter, an electromagnetic flowmeter and a PLC controller electrically connected with the detector, the vortex flowmeter and the electromagnetic flowmeter.

[0024] 2. When applied to sewage treatment, the sewage in the sewage treatment process can be lifted to the treatment system in the utility model through the sewage pump, and then is converged to the subsequent original treatment process route after treatment, thereby effectively saving the land occupation of the structure, and meanwhile, the installation position can be flexibly adjusted according to the on-site situation due to the convenient movement, and good adaptability is achieved.

[0025] 3. Different gas sources are supplied for the anaerobic tank, the aerobic tank and the anoxic tank, and the structure design of the disc type micro-porous aerator, the vortex flowmeter and the valve is assisted, so that the aeration amount and the dissolved oxygen concentration can be effectively controlled to meet the control conditions in the treatment process, and the gas stirring can be conveniently realized, the stirring is more uniform, the product structure is effectively simplified, and the problems of high failure rate and difficult maintenance due to the complex structure are avoided.

[0026] 4. The structure design that the sludge in the sedimentation tank is backflowed to the anaerobic tank and the anoxic tank is adopted, so that the sludge can be effectively utilized, the sludge yield is small, the sludge treatment cost is low, and the cost is reduced.

[0027] 5. The combined filler is adopted, so that the stable reproduction of microorganisms can be ensured, the biological membrane is easily grown, the function of cutting bubbles is achieved, and the water-gas biological membrane is fully exchanged.

[0028] 6. The structure design of the detector can control the sewage, sludge conveying amount and aeration amount according to the real-time monitoring of the ammonia nitrogen, total nitrogen, total phosphorus and dissolved oxygen concentration change, adjust the treatment process parameters, and realize better denitrification and phosphorus removal effect. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings of the utility model are as follows:

[0030] Figure 1 It is the overall structure schematic view of the utility model.

[0031] Figure 2 It is Figure 1 the top view of the utility model.

[0032] The reference signs in the drawings are as follows:

[0033] 1, anaerobic tank; 1A, water inlet pump; 1B, first electromagnetic flowmeter; 1C, first partition; 1D, first water hole; 2, aerobic tank; 2A, second partition; 2B, second water hole; 3, anoxic tank; 3A, anoxic tank outlet pipe; 4, sedimentation tank; 4A, central water inlet pipe; 4B, reflector plate; 4C, first sludge return pump; 4D, second electromagnetic flowmeter; 4E, second sludge return pump; 4F, third electromagnetic flowmeter; 5, aeration device; 5A, nitrogen generator; 5B, fan; 5C, disc type microporous aerator; 6, combined filler; 7, PLC controller; 8, first vortex flowmeter; 9, second vortex flowmeter; 10, third vortex flowmeter; 11, first dissolved oxygen on-line detector; 12, total phosphorus on-line detector; 13, second dissolved oxygen on-line detector; 14, ammonia nitrogen on-line detector; 15, third dissolved oxygen on-line detector; 16, total nitrogen on-line detector; 17, total phosphorus on-line detector. DETAILED DESCRIPTION

[0034] The utility model is further described below in combination with the embodiments, but should not be understood as limiting the utility model, the protection scope of the utility model is accurate with the content recorded in the claims, any equivalent technical means replacement according to the specification, all do not deviate from the protection scope of the utility model.

[0035] EMBODIMENT

[0036] The overall structure of the embodiment is shown in the figure, the improved sewage integrated treatment system includes anaerobic tank 1, aerobic tank 2, anoxic tank 3 and sedimentation tank 4 in communication with each other, the material input end of the treatment system is communicated with the sewage output end, the effluent of the sedimentation tank is communicated with the outside, and the gas source output end of the aeration device 5 is communicated with the inside of the aerobic tank 2;Among them:

[0037] A, the material input end of the anaerobic tank 1 is communicated with the sewage output end, the anaerobic tank 1, the aerobic tank 2 and the anoxic tank 3 are in a linear structure connected in order and separated by a partition, the partition is provided with a water hole for communicating the left and right tank bodies, and the material output of the anoxic tank 3 is communicated with the sedimentation tank 4 through a pipeline;The anaerobic tank 1, the aerobic tank 2 and the anoxic tank 3 are hung with combined fillers 6 for accommodating microorganisms;

[0038] B, the aeration device includes nitrogen generator 5A and fan 5B, the nitrogen generator 5A is communicated with the aeration head in the anaerobic tank 1 and the anoxic tank 3 through the aeration pipe and the valve, and the fan 5B is communicated with the aeration head in the aerobic tank 2 through the aeration pipe and the valve;

[0039] C, the anaerobic tank 1, the aerobic tank 2, the anoxic tank 3 and the sedimentation tank 4 are provided with a detector for detecting water quality, the anaerobic tank 1, the aerobic tank 2 and the anoxic tank 3 are provided with a vortex flowmeter for displaying gas flow, the sewage output end and the sludge output end of the sedimentation tank 4 are provided with an electromagnetic flowmeter for displaying material flow, and the detector, the vortex flowmeter and the electromagnetic flowmeter are electrically connected with the PLC controller 7.

[0040] A first partition 1C is arranged between the anaerobic tank 1 and the aerobic tank 2, and a first water passing hole 1D is formed in the upper portion of the first partition 1C to communicate the anaerobic tank 1 and the aerobic tank 2.

[0041] The material output end of the anoxic tank 3 is communicated with a central water inlet pipe 4A arranged in the sedimentation tank 4 through an anoxic tank water outlet pipe 3A.

[0042] A reflecting plate 4B is arranged at the material outlet of the central water inlet pipe 4A.

[0043] The sewage output end is communicated with the material input end of the anaerobic tank 1 through a water inlet pump 1A, a first electromagnetic flowmeter 1B, a valve and a sewage pipe.

[0044] The sludge output end of the sedimentation tank 4 is communicated with the anaerobic tank 1 and the anoxic tank 3 through a sludge backflow pump, an electromagnetic flowmeter, a valve and a sludge pipe respectively.

[0045] The sludge output end of the sedimentation tank 4 has two output ends, one of which is communicated with the material input end of the anaerobic tank 1 through a first sludge backflow pump 4C, a second electromagnetic flowmeter 4D, a valve and a sludge pipe, and the other of which is communicated with the material input end of the anoxic tank 3 through a second sludge backflow pump 4E, a third electromagnetic flowmeter 4F, a valve and a sludge pipe.

[0046] The detector includes a first dissolved oxygen online detector 11 and a water inlet total phosphorus online detector 12 arranged in the anaerobic tank 1, a second dissolved oxygen online detector 13 and an aerobic zone ammonia nitrogen online detector 14 arranged in the aerobic tank 2, a third dissolved oxygen online detector 15 and an anoxic zone total nitrogen online detector 16 arranged in the anoxic tank 3, and a water outlet total phosphorus online detector 17 arranged in the sedimentation tank 4.

[0047] The main function of the aeration head is to ensure the aeration amount and meet the need of material mixing, and in order to achieve better use effect, the preferred technical implementation means is that the aeration head is a disc type micro-porous aerator 5C arranged in the anaerobic tank 1, the aerobic tank 2 and the anoxic tank 3.

[0048] The working principle of the embodiment is as follows:

[0049] The sewage enters the anaerobic tank 1 through the water inlet pump 1A and the first electromagnetic flowmeter 1B, the water outlet of the anaerobic tank 1 enters the aerobic tank 2 through the first water passage 1D, the water outlet of the aerobic tank 2 enters the anoxic tank 3 through the second water passage 2B, the water outlet of the anoxic tank enters the sedimentation tank 4 through the anoxic tank water outlet pipe 3A, the center water inlet pipe 4A and the reflecting plate 4B, and finally the water outlet of the sedimentation tank 4 is discharged from the water outlet weir. The water inlet flow is displayed and controlled through the first electromagnetic flowmeter 1B and the valve arranged on the sewage pipe. The microorganisms in the anaerobic tank convert the organic matter in the water inlet into glycogen and polyhydroxyalkanoate and other forms for storage, which are used as denitrification carbon sources in the subsequent anoxic tank. The polyhydroxyalkanoate is used as an electron acceptor for denitrification, and the glycogen is used to maintain growth metabolism. The microorganisms in the anoxic tank can utilize the stored internal carbon source for denitrification without external carbon source, thereby achieving carbon reduction and consumption reduction.

[0050] Different numbers of combined fillers 6 are arranged in the anaerobic tank 1, the aerobic tank 2 and the anoxic tank 3. The combined fillers 6 are stable places for cultivating microorganisms. The active sludge is added to the system, and the anaerobic ammonia oxidation bacteria are added to facilitate denitrification and phosphorus removal. The pre-culture of dominant bacteria can ensure the stable operation of the system. Since it belongs to the prior art, the applicant will not repeat it here.

[0051] The prior art shows that, in order to achieve stable treatment effect, the dissolved oxygen concentrations in the anaerobic tank, the aerobic tank and the anoxic tank are respectively: the anaerobic tank <0.2 mg / L; the aerobic tank >2 mg / L; the anoxic tank 0.2-0.5 mg / L; the stirring mode is air stirring, the anaerobic tank 1 and the anoxic tank 3 are communicated with the gas source output of the nitrogen generator 5A, the aerobic tank 2 is communicated with the gas source output of the fan 5B, the gas source input ends in the anaerobic tank 1, the aerobic tank 2 and the anoxic tank 3 are communicated with the disc type micro-porous aerator 5C, the first dissolved oxygen online detector 11, the second dissolved oxygen online detector 13 and the third dissolved oxygen online detector 15 monitor the dissolved oxygen concentrations in the anaerobic tank 1, the aerobic tank 2 and the anoxic tank 3 respectively, the first vortex flowmeter 8, the second vortex flowmeter 9 and the third vortex flowmeter 10 monitor and display the gas source conveying amount, and the gas source input into the anaerobic tank 1, the aerobic tank 2 and the anoxic tank 3 is controlled by opening and closing and opening amount change of the valves communicated with the aeration pipes.

[0052] The sludge in the sedimentation tank 4 is communicated with the material input ends of the anaerobic tank and the anoxic tank through the sludge backflow pump, the electromagnetic flowmeter, the valve and the sludge pipe, and the sludge conveying direction and the conveying amount change control are realized by opening and closing and opening amount change of the valves communicated with the sludge pipe.

[0053] PLC controller 7 is connected with the signal output end of vortex flowmeter, electromagnetic flowmeter and detector, and through monitoring data change, it controls the opening and closing of valves arranged in aeration pipe, sludge pipe and sewage pipe and the change of opening amount.

Claims

1. An improved integrated sewage treatment system, comprising an anaerobic tank (1), an aerobic tank (2), an anoxic tank (3) and a sedimentation tank (4) in communication with each other, a material input end of the treatment system being in communication with a sewage output end, an effluent of the sedimentation tank being in communication with the outside, and a gas source output end of an aeration device (5) being in communication with the inside of the aerobic tank (2); characterized in that: A. the material input end of the anaerobic tank (1) is in communication with the sewage output end, the anaerobic tank (1), the aerobic tank (2) and the anoxic tank (3) are in a linear structure connected in sequence and separated by a partition, the partition is provided with a water passing hole for connecting the left and right tank bodies, and the material output of the anoxic tank (3) is connected to the sedimentation tank (4) through a pipeline; the anaerobic tank (1), the aerobic tank (2) and the anoxic tank (3) are provided with combined fillers (6) for accommodating microorganisms; B. the aeration device comprises a nitrogen generator (5A) and a fan (5B), the nitrogen generator (5A) is connected to the aeration heads in the anaerobic tank (1) and the anoxic tank (3) through an aeration pipe and a valve, and the fan (5B) is connected to the aeration head in the aerobic tank (2) through an aeration pipe and a valve; C. the anaerobic tank (1), the aerobic tank (2), the anoxic tank (3) and the sedimentation tank (4) are provided with detectors for monitoring water quality, the anaerobic tank (1), the aerobic tank (2) and the anoxic tank (3) are provided with vortex flow meters for displaying gas flow, the sewage output end and the sludge output end of the sedimentation tank (4) are provided with electromagnetic flow meters for displaying material flow, and the detectors, the vortex flow meters and the electromagnetic flow meters are electrically connected to a PLC controller (7). A first partition (1C) is arranged between the anaerobic tank (1) and the aerobic tank (2), and the first partition (1C) is provided with a first water passing hole (1D) for connecting the anaerobic tank (1) and the aerobic tank (2); a second partition (2A) is arranged between the aerobic tank (2) and the anoxic tank (3), and the second partition (2A) is provided with a second water passing hole (2B) for connecting the aerobic tank (2) and the anoxic tank (3). The material output end of the anoxic tank (3) is connected to a central water inlet pipe (4A) arranged in the sedimentation tank (4) through an anoxic tank effluent pipe (3A). The material outlet of the central water inlet pipe (4A) is provided with a reflecting plate (4B).

2. The improved integrated wastewater treatment system of claim 1, wherein The sewage output end is connected to the material input end of the anaerobic tank (1) through a water inlet pump (1A), a first electromagnetic flow meter (1B), a valve and a sewage pipe.

3. The improved integrated wastewater treatment system of claim 1, wherein The sludge output end of the sedimentation tank (4) is connected to the anaerobic tank (1) and the anoxic tank (3) through a sludge backflow pump, an electromagnetic flow meter, a valve and a sludge pipe.

4. The improved integrated wastewater treatment system of claim 3, wherein The sludge output end of the sedimentation tank (4) is connected to the material input end of the anaerobic tank (1) through a first sludge backflow pump (4C), a second electromagnetic flow meter (4D), a valve and a sludge pipe; and the other sludge output end is connected to the material input end of the anoxic tank (3) through a second sludge backflow pump (4E), a third electromagnetic flow meter (4F), a valve and a sludge pipe.

5. The improved integrated wastewater treatment system of claim 1, wherein ​ 6. The improved integrated wastewater treatment system of claim 1, wherein ​ 7. The improved integrated wastewater treatment system of claim 6, wherein ​ 8. The improved integrated wastewater treatment system of claim 1, wherein The detection instrument includes a first dissolved oxygen on-line detector (11) and a total phosphorus on-line detector (12) arranged in the anaerobic tank (1), a second dissolved oxygen on-line detector (13) and an ammonia nitrogen on-line detector (14) arranged in the aerobic tank (2), a third dissolved oxygen on-line detector (15) and a total nitrogen on-line detector (16) arranged in the anoxic tank (3), and a total phosphorus on-line detector (17) arranged in the sedimentation tank (4); the vortex flow meters include a first vortex flow meter (8) communicated with the aeration pipe of the anaerobic tank (1), a second vortex flow meter (9) communicated with the aeration pipe of the aerobic tank (2), and a third vortex flow meter (10) communicated with the aeration pipe of the anoxic tank (3).

9. The improved integrated wastewater treatment system of claim 1, wherein The aeration head adopts a disc type micro-porous aerator (5C) arranged in the anaerobic tank (1), the aerobic tank (2) and the anoxic tank (3).

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