CN106215759B - Shaft stirring wastewater treatment device - Google Patents
Shaft stirring wastewater treatment device Download PDFInfo
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- CN106215759B CN106215759B CN201610818580.4A CN201610818580A CN106215759B CN 106215759 B CN106215759 B CN 106215759B CN 201610818580 A CN201610818580 A CN 201610818580A CN 106215759 B CN106215759 B CN 106215759B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/808—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers driven from the bottom of the receptacle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/05—Stirrers
- B01F27/11—Stirrers characterised by the configuration of the stirrers
- B01F27/19—Stirrers with two or more mixing elements mounted in sequence on the same axis
- B01F27/191—Stirrers with two or more mixing elements mounted in sequence on the same axis with similar elements
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The invention discloses a shaft stirring wastewater treatment device, which belongs to the field of wastewater treatment and mainly solves the problem of non-uniformity of the existing stirring device.
Description
Technical Field
The invention relates to the field of wastewater treatment, in particular to an anaerobic sludge wastewater treatment device.
Background
The basic concept of activated sludge was discovered by clark and garch in the uk in 1912. They generate sludge by aerating sewage for a long time, and the water quality is obviously improved, and finally, the method for treating the wastewater by using the sludge is invented.
The stirring device of the existing wastewater treatment device is generally characterized in that the upper end of the stirring device is provided with a stirring paddle for stirring a sludge bed, but the existing stirring system is positioned at the center of the sludge bed for stirring, so that the rotating speed of water at the center is very high, but the rotating speed of water at the periphery is very low, the reaction between sludge and wastewater is not facilitated, the treatment effect of the wastewater is reduced, and the existing device is fixed and cannot be moved, so that the use of the wastewater treatment device is also influenced.
Disclosure of Invention
The invention aims to: to solve the above problems, a shaft stirring wastewater treatment device is provided, which performs sufficient mixing of sludge and wastewater in a direction in which a central rotating shaft is provided at a central end and an outer rotating shaft is provided around the central rotating shaft.
The technical scheme adopted by the invention is as follows:
the invention discloses a shaft stirring wastewater treatment device, which comprises a stirring device, a suspension layer positioned above the stirring device, a gas collecting hood and a drainage device positioned above the suspension layer, wherein the drainage device is connected with a wastewater post-treatment system through a water pipe, and the gas collecting hood is connected with a methane post-treatment device through a gas pipe;
the stirring device comprises a central stirring shaft and an outer stirring shaft positioned outside the central stirring shaft, a gap is formed between the central stirring shaft and the outer stirring shaft, the gap is used for reacting sludge and wastewater, and the outer wall of the central stirring shaft is provided with stirring blades a.
As an improvement, the inner side of the outer stirring shaft is provided with stirring blades b.
As an improvement, the central stirring shaft is also provided with a driving shaft positioned in the center of the central stirring shaft, the periphery of the driving shaft is provided with an annular pipe, and the annular pipe is connected with a wastewater inlet pipe;
in actual production, at least one waste water outlet is needed, the specific number of the outlets can be set according to the water flow condition and the gap condition, and at most, the waste water outlet can be arranged between every two stirring blades a, but in a preferred embodiment, the waste water outlets are three or four outlets with the same distance.
As an improvement, the gap is provided with a water outlet pipe and a water inlet pipe which are communicated with the suspension layer.
As an improvement, the section of the stirring blade a is trapezoidal, and the section of the stirring blade b is trapezoidal.
In the invention, the rotation of the central stirring shaft and the outer stirring shaft has four modes, the central stirring shaft rotates, and the outer stirring shaft does not rotate; the central stirring shaft and the outer stirring shaft rotate clockwise or anticlockwise (in the same direction) at the same time, and the central stirring shaft and the outer stirring shaft rotate in opposite directions; the central stirring shaft is static, and the outer stirring shaft rotates.
As an improvement, the system is also provided with an intelligent control system, the intelligent control system comprises a detector positioned on a water pipe of the drainage device, a control processor connected with the detector, and a power control device positioned on the motor and connected with the control processor, and the power control device controls the power of the motor so as to control the rotating speed of the motor and further control the rotating speed of the central stirring shaft;
when effluent treatment plant work, the detector that is located the water pipe detects the COD volume to carry the control treater with the signal of the COD volume that detects, the control treater control the rotational speed of motor according to the COD volume that receives, and then the mixed degree of control mud and waste water, in the middle of the reality, use and to find an optimal formula value according to COD volume and the mutual relation of rotational speed, then find control system according to this formula value and change how according to the COD value that detects and go the power of control motor and the rotational speed of rotation axis.
As an improvement, the inlet of the drainage device is positioned at the lower end of the gas collecting hood, and a specific position in the drainage device can be easily found according to the size of the device and the condition of a suspension layer.
As an improvement, a biogas collection system is arranged in a water pipe connected with the drainage device, the biogas collection system comprises a water pipe gas collecting hood and a gas pipe connected with the water pipe gas collecting hood, the gas pipe is connected with a biogas post-treatment device, wherein the number of the water pipe gas collecting hood can be one or more, such as 1, 2, 3, 10, 20, etc., and even 100 water pipe gas collecting hoods can be set under the condition of very tiny water pipe gas collecting hoods.
As an improvement, in the technical scheme disclosed by the invention, the central stirring shaft and the stirring blade a are of an integrated structure made of a high polymer material, the high polymer material comprises 6-100 parts by weight of nylon, 20-50 parts by weight of short-filament carbon fiber, 0.5-5 parts by weight of a silane coupling agent and 5-10 parts by weight of nano silica, the material of the central stirring shaft disclosed by the invention can also be used on other products in other fields, and the material of the central stirring shaft disclosed by the invention is determined according to the requirements of the products on the material, and has high corrosion resistance, high impact resistance and high shear strength.
In conclusion, due to the adoption of the technical scheme, the invention has the advantages that,
1. the wastewater treatment device disclosed by the invention adopts the stirring device with a special structure, so that the wastewater and the sludge can be better and uniformly mixed, the occupied space is smaller, and the treatment effect of the wastewater is greatly improved for the prior art;
2. the wastewater treatment device disclosed by the invention sets the drainage device at the middle position of the whole device, sludge can be recycled along the inner wall, and meanwhile, the miniature gas collecting device is arranged on the downstream water pipe of the drainage device, so that methane in the water pipe can be fully recycled for the second time, and the wastewater treatment effect is improved;
3. the stirring system of the treatment device disclosed by the invention adopts intelligent control, can change the stirring rotating speed according to the COD value of the downstream water pipe, reduces the influence of a vortex structure under the condition of too fast stirring, and ensures that the stirring rotating speed and the wastewater treatment effect can be optimally balanced.
4. In a preferred scheme, the central stirring shaft is made of a corrosion-resistant high-strength high polymer material, so that the service life of the stirring shaft is greatly prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a top view of the stirring device of the present invention;
the labels in the figure are: 1-central stirring shaft, 11-driving shaft, 12-circular ring pipe, 13-stirring blades a, 14-waste water outlet, 15-motor, 2-outer stirring shaft, 21-stirring blades b, 3-suspension layer, 4-gas collecting hood and 5-water discharging device.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Specific example 1: as shown in fig. 1 and 2, the embodiment discloses a shaft stirring wastewater treatment device, which comprises a stirring device, a suspension layer 3 positioned above the stirring device, a gas collecting hood 4 positioned above the suspension layer, and a drainage device 5, wherein the drainage device 5 is connected with a wastewater post-treatment system through a water pipe, and the gas collecting hood 4 is connected with a biogas post-treatment device through a gas pipe;
the stirring device comprises a central stirring shaft 1 and an outer stirring shaft 2 positioned outside the central stirring shaft, a gap is formed between the central stirring shaft 1 and the outer stirring shaft 2, the gap is used for reacting sludge and wastewater, the outer wall of the central stirring shaft 1 is provided with stirring blades a13, and the inner side of the outer stirring shaft is provided with stirring blades b 21.
The central stirring shaft 1 is also provided with a driving shaft 11 positioned in the center of the central stirring shaft 1, the periphery of the driving shaft 11 is provided with an annular pipe 12, and the annular pipe 12 is connected with a wastewater inlet pipe;
a waste water outlet 14 is arranged between the two stirring blades a 13.
The gap is provided with a water outlet pipe and a water inlet pipe which are communicated with the suspension layer.
The section of the stirring blade a is trapezoidal, and the section of the stirring blade b21 is trapezoidal.
The bottom of the central stirring shaft 1 is provided with a motor 15 for driving the central stirring shaft 1 to rotate, and the intelligent control system is also arranged, the intelligent control system comprises a detector positioned on a water pipe of the drainage device, a control processor connected with the detector, and a power control device positioned on the motor 15 and connected with the control processor, and the power control device controls the power of the motor 15 so as to further control the rotating speed of the motor and the rotating speed of the central stirring shaft 1;
when the wastewater treatment device works, the detector positioned on the water pipe detects the COD amount and transmits a signal of the detected COD amount to the control processor, and the control processor controls the rotating speed of the motor according to the received COD amount so as to control the mixing degree of the sludge and the wastewater;
the inlet of the drainage device is positioned at the lower end of the gas collecting hood 4, the cross section of the drainage device is of an open structure, the inner wall of the open structure is provided with a friction resistance block for reducing the water flow speed, and the cross section of the friction resistance block is triangular.
A biogas collecting system is arranged in a water pipe connected with the drainage device 5 in the wastewater treatment device, the biogas collecting system comprises a water pipe gas collecting hood and a gas pipe connected with the water pipe gas collecting hood, and the gas pipe is connected to a biogas post-treatment device.
The central stirring shaft 1 and the stirring blades a13 are of an integrated structure made of high polymer materials, and the high polymer materials comprise, by weight, 6-100 parts of nylon, 20 parts of short-filament carbon fibers, 0.5 part of a silane coupling agent and 5 parts of nano silicon dioxide.
Specific example 2: as shown in fig. 1 and 2, the embodiment discloses a shaft stirring wastewater treatment device, which comprises a stirring device, a suspension layer 3 positioned above the stirring device, a gas collecting hood 4 positioned above the suspension layer, and a drainage device 5, wherein the drainage device 5 is connected with a wastewater post-treatment system through a water pipe, and the gas collecting hood 4 is connected with a biogas post-treatment device through a gas pipe;
the stirring device comprises a central stirring shaft 1 and an outer stirring shaft 2 positioned outside the central stirring shaft, a gap is formed between the central stirring shaft 1 and the outer stirring shaft 2, the gap is used for reacting sludge and wastewater, the outer wall of the central stirring shaft 1 is provided with stirring blades a13, and the inner side of the outer stirring shaft is provided with stirring blades b 21.
The central stirring shaft 1 is also provided with a driving shaft 11 positioned in the center of the central stirring shaft 1, the periphery of the driving shaft 11 is provided with an annular pipe 12, and the annular pipe 12 is connected with a wastewater inlet pipe;
a waste water outlet 14 is arranged between the two stirring blades a 13.
The gap is provided with a water outlet pipe and a water inlet pipe which are communicated with the suspension layer.
The section of the stirring blade a is trapezoidal, and the section of the stirring blade b21 is trapezoidal.
The bottom of the central stirring shaft 1 is provided with a motor 15 for driving the central stirring shaft 1 to rotate, and the intelligent control system is also arranged, the intelligent control system comprises a detector positioned on a water pipe of the drainage device, a control processor connected with the detector, and a power control device positioned on the motor 15 and connected with the control processor, and the power control device controls the power of the motor 15 so as to further control the rotating speed of the motor and the rotating speed of the central stirring shaft 1;
when the wastewater treatment device works, the detector positioned on the water pipe detects the COD amount and transmits a signal of the detected COD amount to the control processor, and the control processor controls the rotating speed of the motor according to the received COD amount so as to control the mixing degree of the sludge and the wastewater;
the inlet of the drainage device is positioned at the lower end of the gas collecting hood 4, the cross section of the drainage device is of an opening structure, the inner wall of the opening structure is provided with a friction resistance block for reducing the water flow speed, and the cross section of the friction resistance block is quadrilateral.
A biogas collecting system is arranged in a water pipe connected with the drainage device 5 in the wastewater treatment device, the biogas collecting system comprises a water pipe gas collecting hood and a gas pipe connected with the water pipe gas collecting hood, and the gas pipe is connected to a biogas post-treatment device.
The central stirring shaft 1 and the stirring blades a13 are of an integrated structure made of high polymer materials, and the high polymer materials comprise, by weight, 6-100 parts of nylon, 50 parts of short-filament carbon fibers, 5 parts of a silane coupling agent and 10 parts of nano silicon dioxide.
Specific example 3: as shown in fig. 1 and 2, the embodiment discloses a shaft stirring wastewater treatment device, which comprises a stirring device, a suspension layer 3 positioned above the stirring device, a gas collecting hood 4 positioned above the suspension layer, and a drainage device 5, wherein the drainage device 5 is connected with a wastewater post-treatment system through a water pipe, and the gas collecting hood 4 is connected with a biogas post-treatment device through a gas pipe;
the stirring device comprises a central stirring shaft 1 and an outer stirring shaft 2 positioned outside the central stirring shaft, a gap is formed between the central stirring shaft 1 and the outer stirring shaft 2, the gap is used for reacting sludge and wastewater, the outer wall of the central stirring shaft 1 is provided with stirring blades a13, and the inner side of the outer stirring shaft is provided with stirring blades b 21.
The central stirring shaft 1 is also provided with a driving shaft 11 positioned in the center of the central stirring shaft 1, the periphery of the driving shaft 11 is provided with an annular pipe 12, and the annular pipe 12 is connected with a wastewater inlet pipe;
a waste water outlet 14 is arranged between the two stirring blades a 13.
The gap is provided with a water outlet pipe and a water inlet pipe which are communicated with the suspension layer.
The section of the stirring blade a is trapezoidal, and the section of the stirring blade b21 is trapezoidal.
The bottom of the central stirring shaft 1 is provided with a motor 15 for driving the central stirring shaft 1 to rotate, and the intelligent control system is also arranged, the intelligent control system comprises a detector positioned on a water pipe of the drainage device, a control processor connected with the detector, and a power control device positioned on the motor 15 and connected with the control processor, and the power control device controls the power of the motor 15 so as to further control the rotating speed of the motor and the rotating speed of the central stirring shaft 1;
when the wastewater treatment device works, the detector positioned on the water pipe detects the COD amount and transmits a signal of the detected COD amount to the control processor, and the control processor controls the rotating speed of the motor according to the received COD amount so as to control the mixing degree of the sludge and the wastewater;
the inlet of the drainage device is positioned at the lower end of the gas collecting hood 4, the cross section of the drainage device is of an opening structure, the inner wall of the opening structure is provided with a friction resistance block for reducing the water flow speed, and the cross section of the friction resistance block is pentagonal.
A biogas collecting system is arranged in a water pipe connected with the drainage device 5 in the wastewater treatment device, the biogas collecting system comprises a water pipe gas collecting hood and a gas pipe connected with the water pipe gas collecting hood, and the gas pipe is connected to a biogas post-treatment device.
The central stirring shaft 1 and the stirring blades a13 are of an integrated structure made of high polymer materials, and the high polymer materials comprise, by weight, 6-100 parts of nylon, 40 parts of short-filament carbon fibers, 2 parts of a silane coupling agent and 5 parts of nano silicon dioxide.
Specific example 4: as shown in fig. 1 and 2, the embodiment discloses a shaft stirring wastewater treatment device, which comprises a stirring device, a suspension layer 3 positioned above the stirring device, a gas collecting hood 4 positioned above the suspension layer, and a drainage device 5, wherein the drainage device 5 is connected with a wastewater post-treatment system through a water pipe, and the gas collecting hood 4 is connected with a biogas post-treatment device through a gas pipe;
the stirring device comprises a central stirring shaft 1 and an outer stirring shaft 2 positioned outside the central stirring shaft, a gap is formed between the central stirring shaft 1 and the outer stirring shaft 2, the gap is used for reacting sludge and wastewater, the outer wall of the central stirring shaft 1 is provided with stirring blades a13, and the inner side of the outer stirring shaft is provided with stirring blades b 21.
The central stirring shaft 1 is also provided with a driving shaft 11 positioned in the center of the central stirring shaft 1, the periphery of the driving shaft 11 is provided with an annular pipe 12, and the annular pipe 12 is connected with a wastewater inlet pipe;
a waste water outlet 14 is arranged between the two stirring blades a 13.
The gap is provided with a water outlet pipe and a water inlet pipe which are communicated with the suspension layer.
The section of the stirring blade a is trapezoidal, and the section of the stirring blade b21 is trapezoidal.
The bottom of the central stirring shaft 1 is provided with a motor 15 for driving the central stirring shaft 1 to rotate, and the intelligent control system is also arranged, the intelligent control system comprises a detector positioned on a water pipe of the drainage device, a control processor connected with the detector, and a power control device positioned on the motor 15 and connected with the control processor, and the power control device controls the power of the motor 15 so as to further control the rotating speed of the motor and the rotating speed of the central stirring shaft 1;
when the wastewater treatment device works, the detector positioned on the water pipe detects the COD amount and transmits a signal of the detected COD amount to the control processor, and the control processor controls the rotating speed of the motor according to the received COD amount so as to control the mixing degree of the sludge and the wastewater;
the inlet of the drainage device is positioned at the lower end of the gas collecting hood 4, the cross section of the drainage device is of an opening structure, the inner wall of the opening structure is provided with a friction resistance block for reducing the water flow speed, and the cross section of the friction resistance block is hexagonal.
A biogas collecting system is arranged in a water pipe connected with the drainage device 5 in the wastewater treatment device, the biogas collecting system comprises a water pipe gas collecting hood and a gas pipe connected with the water pipe gas collecting hood, and the gas pipe is connected to a biogas post-treatment device.
The central stirring shaft 1 and the stirring blades a13 are of an integrated structure made of high polymer materials, and the high polymer materials comprise, by weight, 6-100 parts of nylon, 20 parts of short-filament carbon fibers, 5 parts of a silane coupling agent and 5 parts of nano silicon dioxide.
Specific example 5: as shown in fig. 1 and 2, the embodiment discloses a shaft stirring wastewater treatment device, which comprises a stirring device, a suspension layer 3 positioned above the stirring device, a gas collecting hood 4 positioned above the suspension layer, and a drainage device 5, wherein the drainage device 5 is connected with a wastewater post-treatment system through a water pipe, and the gas collecting hood 4 is connected with a biogas post-treatment device through a gas pipe;
the stirring device comprises a central stirring shaft 1 and an outer stirring shaft 2 positioned outside the central stirring shaft, a gap is formed between the central stirring shaft 1 and the outer stirring shaft 2, the gap is used for reacting sludge and wastewater, the outer wall of the central stirring shaft 1 is provided with stirring blades a13, and the inner side of the outer stirring shaft is provided with stirring blades b 21.
The central stirring shaft 1 is also provided with a driving shaft 11 positioned in the center of the central stirring shaft 1, the periphery of the driving shaft 11 is provided with an annular pipe 12, and the annular pipe 12 is connected with a wastewater inlet pipe;
a waste water outlet 14 is arranged between the two stirring blades a 13.
The gap is provided with a water outlet pipe and a water inlet pipe which are communicated with the suspension layer.
The section of the stirring blade a is trapezoidal, and the section of the stirring blade b21 is trapezoidal.
The bottom of the central stirring shaft 1 is provided with a motor 15 for driving the central stirring shaft 1 to rotate, and the intelligent control system is also arranged, the intelligent control system comprises a detector positioned on a water pipe of the drainage device, a control processor connected with the detector, and a power control device positioned on the motor 15 and connected with the control processor, and the power control device controls the power of the motor 15 so as to further control the rotating speed of the motor and the rotating speed of the central stirring shaft 1;
when the wastewater treatment device works, the detector positioned on the water pipe detects the COD amount and transmits a signal of the detected COD amount to the control processor, and the control processor controls the rotating speed of the motor according to the received COD amount so as to control the mixing degree of the sludge and the wastewater;
the inlet of the drainage device is positioned at the lower end of the gas collecting hood 4, the cross section of the drainage device is of an open structure, the inner wall of the open structure is provided with a friction resistance block for reducing the water flow speed, and the cross section of the friction resistance block is triangular.
A biogas collecting system is arranged in a water pipe connected with the drainage device 5 in the wastewater treatment device, the biogas collecting system comprises a water pipe gas collecting hood and a gas pipe connected with the water pipe gas collecting hood, and the gas pipe is connected to a biogas post-treatment device.
The central stirring shaft 1 and the stirring blades a13 are of an integrated structure made of high polymer materials, and the high polymer materials comprise, by weight, 6-100 parts of nylon, 50 parts of short-filament carbon fibers, 0.5 part of a silane coupling agent and 10 parts of nano silicon dioxide.
Specific example 6: as shown in fig. 1 and 2, the embodiment discloses a shaft stirring wastewater treatment device, which comprises a stirring device, a suspension layer 3 positioned above the stirring device, a gas collecting hood 4 positioned above the suspension layer, and a drainage device 5, wherein the drainage device 5 is connected with a wastewater post-treatment system through a water pipe, and the gas collecting hood 4 is connected with a biogas post-treatment device through a gas pipe;
the stirring device comprises a central stirring shaft 1 and an outer stirring shaft 2 positioned outside the central stirring shaft, a gap is formed between the central stirring shaft 1 and the outer stirring shaft 2, the gap is used for reacting sludge and wastewater, the outer wall of the central stirring shaft 1 is provided with stirring blades a13, and the inner side of the outer stirring shaft is provided with stirring blades b 21.
The central stirring shaft 1 is also provided with a driving shaft 11 positioned in the center of the central stirring shaft 1, the periphery of the driving shaft 11 is provided with an annular pipe 12, and the annular pipe 12 is connected with a wastewater inlet pipe;
a waste water outlet 14 is arranged between the two stirring blades a 13.
The gap is provided with a water outlet pipe and a water inlet pipe which are communicated with the suspension layer.
The section of the stirring blade a is trapezoidal, and the section of the stirring blade b21 is trapezoidal.
The bottom of the central stirring shaft 1 is provided with a motor 15 for driving the central stirring shaft 1 to rotate, and the intelligent control system is also arranged, the intelligent control system comprises a detector positioned on a water pipe of the drainage device, a control processor connected with the detector, and a power control device positioned on the motor 15 and connected with the control processor, and the power control device controls the power of the motor 15 so as to further control the rotating speed of the motor and the rotating speed of the central stirring shaft 1;
when the wastewater treatment device works, the detector positioned on the water pipe detects the COD amount and transmits a signal of the detected COD amount to the control processor, and the control processor controls the rotating speed of the motor according to the received COD amount so as to control the mixing degree of the sludge and the wastewater;
the inlet of the drainage device is positioned at the lower end of the gas collecting hood 4, the cross section of the drainage device is of an opening structure, the inner wall of the opening structure is provided with a friction resistance block for reducing the water flow speed, and the cross section of the friction resistance block is pentagonal.
A biogas collecting system is arranged in a water pipe connected with the drainage device 5 in the wastewater treatment device, the biogas collecting system comprises a water pipe gas collecting hood and a gas pipe connected with the water pipe gas collecting hood, and the gas pipe is connected to a biogas post-treatment device.
The central stirring shaft 1 and the stirring blades a13 are of an integrated structure made of high polymer materials, and the high polymer materials comprise, by weight, 6-100 parts of nylon, 20 parts of short-filament carbon fibers, 0.5 part of a silane coupling agent and 10 parts of nano silicon dioxide.
The COD removal rate of the wastewater treatment disclosed in the above embodiment can reach more than 95%, wherein the bending strength of the polymer material of the central stirring shaft under the national standard reaches more than 100MPa, and the impact strength of the cantilever beam notch (+25 ℃ condition unit: KJ/m 2)) is 20, 21, 20, 19, 20 and 20 respectively.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The shaft stirring wastewater treatment device is characterized by comprising a stirring device, a suspension layer (3) positioned above the stirring device, a gas collecting hood (4) and a drainage device (5) positioned above the suspension layer, wherein the drainage device (5) is connected with a wastewater post-treatment system through a water pipe, and the gas collecting hood (4) is connected with a methane post-treatment device through a gas pipe;
the stirring device comprises a central stirring shaft (1) and an outer stirring shaft (2) positioned outside the central stirring shaft, a gap is formed between the central stirring shaft (1) and the outer stirring shaft (2), the gap is used for reacting sludge and wastewater, and stirring blades a (13) are arranged on the outer wall of the central stirring shaft (1);
the bottom of the central stirring shaft (1) is provided with a motor (15) for driving the central stirring shaft (1) to rotate;
the wastewater treatment device is also provided with an intelligent control system, the intelligent control system comprises a detector positioned on a water pipe of the drainage device, a control processor connected with the detector, and a power control device positioned on the motor (15) and connected with the control processor, and the power control device controls the rotating speed of the motor by controlling the power of the motor (15) so as to further control the rotating speed of the central stirring shaft (1);
when the wastewater treatment device works, the detector positioned on the water pipe detects the COD amount and transmits a signal of the detected COD amount to the control processor, and the control processor controls the rotating speed of the motor according to the received COD amount so as to control the mixing degree of the sludge and the wastewater; the inlet of the drainage device is positioned at the lower end of the gas collecting hood (4), the cross section of the drainage device is of an open structure, and a friction resistance block for reducing the water flow speed is arranged on the inner wall of the open structure; a biogas collecting system is arranged in the water pipe connected with the drainage device (5), the biogas collecting system comprises a water pipe gas collecting hood and a gas pipe connected with the water pipe gas collecting hood, and the gas pipe is connected to a biogas post-treatment device.
2. The shaft-stirring wastewater treatment apparatus as set forth in claim 1, wherein the stirring blades b (21) are provided inside said outer stirring shaft.
3. The shaft stirring wastewater treatment device according to claim 1, wherein the central stirring shaft (1) is further provided with a driving shaft (11) positioned in the center of the central stirring shaft (1), the periphery of the driving shaft (11) is provided with a circular ring pipe (12), and the circular ring pipe (12) is connected with a wastewater inlet pipe;
a waste water outlet (14) is arranged between the two stirring blades a (13).
4. The shaft stirring waste water treatment device as defined in claim 1, wherein said gap is provided with a water outlet pipe and a water inlet pipe for communicating with the suspension layer.
5. The shaft-stirring wastewater treatment apparatus as set forth in claim 2, wherein the stirring blade a has a trapezoidal cross section, and the stirring blade b (21) has a trapezoidal cross section.
6. The shaft-stirring wastewater treatment apparatus according to claim 1, wherein the cross section of the frictional resistance block is an arbitrary triangle, an arbitrary quadrangle, an arbitrary pentagon, or an arbitrary hexagon.
7. The shaft stirring wastewater treatment device according to claim 6, wherein the central stirring shaft (1) and the stirring blades a (13) are of an integrated structure made of a high polymer material, and the high polymer material comprises 6-100 parts by weight of nylon, 20-50 parts by weight of short-filament carbon fibers, 0.5-5 parts by weight of a silane coupling agent and 5-10 parts by weight of nano silica.
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| CN201610818580.4A CN106215759B (en) | 2016-09-13 | 2016-09-13 | Shaft stirring wastewater treatment device |
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| CN201610818580.4A CN106215759B (en) | 2016-09-13 | 2016-09-13 | Shaft stirring wastewater treatment device |
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| CN107140731A (en) * | 2017-05-26 | 2017-09-08 | 东台银信钢结构工程有限公司 | A kind of pond for being applied to processing sanitary sewage |
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| CN106215759A (en) | 2016-12-14 |
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