CN110877929A - Water inlet oxygen elimination and pressure stabilization siphon device and using method thereof - Google Patents
Water inlet oxygen elimination and pressure stabilization siphon device and using method thereof Download PDFInfo
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- CN110877929A CN110877929A CN201911232110.XA CN201911232110A CN110877929A CN 110877929 A CN110877929 A CN 110877929A CN 201911232110 A CN201911232110 A CN 201911232110A CN 110877929 A CN110877929 A CN 110877929A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 236
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 40
- 239000001301 oxygen Substances 0.000 title claims abstract description 40
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 40
- 230000008030 elimination Effects 0.000 title claims abstract description 25
- 238000003379 elimination reaction Methods 0.000 title claims abstract description 25
- 230000006641 stabilisation Effects 0.000 title claims abstract description 22
- 238000011105 stabilization Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 73
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- 230000000087 stabilizing effect Effects 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 7
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- 238000006243 chemical reaction Methods 0.000 claims description 3
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- 238000005096 rolling process Methods 0.000 claims description 3
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- 238000006213 oxygenation reaction Methods 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000005273 aeration Methods 0.000 abstract 1
- 238000005457 optimization Methods 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000001914 filtration Methods 0.000 description 6
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- 241000894006 Bacteria Species 0.000 description 1
- 206010051986 Pneumatosis Diseases 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
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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
- C02F3/2866—Particular arrangements for anaerobic reactors
Abstract
The invention relates to a siphon device for inlet water oxygen elimination and pressure stabilization and a using method thereof, wherein the siphon device comprises a siphon water inlet pipe, a fixed water-retaining weir plate, a siphon auxiliary exhaust pipe, a siphon flow meter, an adjusting valve, a siphon water outlet pipe and an adjustable weir plate; the siphon water inlet pipe is connected with the siphon flowmeter through a flange; the water inlet of the siphon water inlet pipe is positioned below the liquid level of the total water inlet channel, and the top of the siphon water inlet pipe is connected with a siphon auxiliary exhaust pipe; the siphon flowmeter is connected with the regulating valve, and the regulating valve is connected with the siphon water outlet pipe; the water outlet of the siphon water outlet pipe is positioned below the liquid level of the water inlet well; the fixed water retaining weir plate is positioned between the total water inlet channel and the retaining wall of the water inlet well, and the fixed water retaining weir plate is provided with an adjustable weir plate. The device has the advantages of reasonable structural design, convenient operation and use, low maintenance cost and high automation degree, and can effectively solve the problems of aeration and unstable tank pressure caused by bubble entrainment generated when water falls from the main water inlet channel of the denitrification biological filter to the water inlet of the water separating well.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a siphon device for inlet water oxygen elimination and pressure stabilization and a using method thereof, which are suitable for the inlet water oxygen elimination and the pressure stabilization of a denitrification biological filter.
Background
In order to control and reduce the quality index of total nitrogen of effluent water in urban domestic sewage treatment plants, denitrification biofilters are often used as advanced treatment units for enhanced denitrification treatment. A denitrification biofilter is a biological denitrification treatment structure which is filled with specific fillers (spherical light porous ceramsite or volcanic rock particles with the particle size phi of 4-6 mm), microorganisms (mainly heterotrophic bacteria) attached to a filter material degrade nitrate nitrogen in an anoxic environment (dissolved oxygen is 0.5mg/l and DO is more than 0.2mg/l) of the filter material layer by utilizing residual organic matters and an external carbon source in water, and nitrogen is released.
At present, most denitrification biofilters adopt a form of gravity flow water inlet of a main water inlet channel and water distribution of a branch water inlet well, but because a height drop of 2-4 meters exists between the main channel and the branch water inlet well, water from the main water inlet channel drops and enters the branch water inlet channel, the water inlet of the denitrification biofilter is greatly oxygenated, bubbles can be wrapped and enter a filter material layer, the actual DO concentration of the inlet water can reach 6-8mg/L, the amount of an external carbon source consumed by DO in the external carbon source added by denitrification of the biofilter accounts for 20% (winter) -60% (summer), and the filter material layer with the initial thickness is used for oxygen elimination, so that the filter material layer actually in an effective anoxic environment is greatly reduced, and the denitrification efficiency is greatly reduced. In addition, due to the fact that water falls into the filter tank, the fluctuation of the water inflow of each group of filter tanks is large, the fluctuation of the tank pressure in the filter tanks is obvious, the fluctuation rate reaches 8% -20%, and the subsequent denitrification treatment efficiency is also seriously influenced. The invention is proposed based on the above research background, and aims to provide a siphon device suitable for the water inlet oxygen elimination and pressure stabilization of a denitrification biological filter and a use method thereof so as to overcome the defects.
Disclosure of Invention
The invention aims to: the siphon device has the advantages of reasonable structural design, convenience in operation and use, low maintenance cost and high automation degree, and can effectively solve the problems of oxygen filling by wrapping bubbles generated when the water from the main water inlet channel of the denitrification biological filter falls to the water distributing well and unstable tank pressure.
In order to achieve the purpose, the invention adopts the following technical scheme:
a siphon device for inlet water oxygen elimination and pressure stabilization is suitable for a denitrification biofilter and comprises a siphon water inlet pipe, a fixed water-blocking weir plate, a siphon auxiliary exhaust pipe, a siphon flow meter, an adjusting valve, a siphon water outlet pipe and an adjustable weir plate; the siphon water inlet pipe is connected with the siphon flowmeter through a flange; the water inlet of the siphon water inlet pipe is positioned below the liquid level of the total water inlet channel, and the top of the siphon water inlet pipe is connected with a siphon auxiliary exhaust pipe; the siphon flowmeter is connected with the regulating valve, and the regulating valve is connected with the siphon water outlet pipe; the water outlet of the siphon water outlet pipe is positioned below the liquid level of the water inlet well; the fixed water retaining weir plate is positioned between the retaining walls of the total water inlet channel and the water inlet well, the fixed water retaining weir plate is positioned below the top of the siphon water inlet pipe, and the fixed water retaining weir plate is provided with an adjustable weir plate.
As a further optimization of the above scheme, the water inflow of the denitrification biofilter of the siphon water inlet pipe and the siphon water outlet pipe can be feedback-regulated by a siphon flow meter and a regulating valve, the specific mode of the water amount feedback regulation of the siphon device comprises an automatic control system, the automatic control system comprises a controller, a flow sensor arranged at the water inlet of the denitrification biofilter and used for detecting the water inflow of the denitrification biofilter, a first liquid level sensor arranged in a main water inlet channel and used for detecting a liquid level height signal of the main water inlet channel, and a second liquid level sensor arranged in a branch water inlet well and used for detecting a liquid level height signal of a branch water inlet channel, wherein the controller is connected with the regulating valve; the flow sensor, the first liquid level sensor and the second liquid level sensor are all connected with a controller through data signals and send detected corresponding signals to the controller; the controller compares the received corresponding signal with a preset corresponding threshold value after data conversion, controls the opening of the regulating valve according to the comparison result, is a Siemens S7-200PLC controller, and is one of a switch-on delay timer, a memory switch-on delay timer and a switch-off delay timer; the first liquid level sensor and the second liquid level sensor are both one of a float type liquid level sensor, a static pressure type liquid level sensor, an ultrasonic liquid level sensor and an optical fiber liquid level sensor.
As a further optimization of the scheme, an exhaust opening and closing valve is arranged on the siphon auxiliary exhaust pipe, and the controller is in control connection with the exhaust opening and closing valve; the automatic control system also comprises a timer, wherein the timer is connected with the controller, the controller starts and closes the exhaust opening and closing valve at regular time through the timer, namely the exhaust opening and closing valve is opened to discharge accumulated gas in the siphon water outlet pipe before the siphon device is started, and the exhaust opening and closing valve is closed when the denitrification biological filter operates normally; the exhaust opening and closing valve is a ball valve.
As the further optimization of above-mentioned scheme, fixed manger plate is fixed to be set up between the barricade of total inlet channel and branch well, be provided with the recess of the total inlet channel of intercommunication and branch well on the intermediate position of fixed manger plate, adjustable weir plate and recess shape are mutually supported to detachably sets up on the recess.
As a further optimization of the scheme, the siphon device further comprises an adjustable weir plate driving mechanism connected with the adjustable weir plate, and the controller is in control connection with the adjustable weir plate driving mechanism; the driving mechanism comprises a fixed support, a driving motor, a driving wheel, a winding wheel, a transmission belt, a driven wheel and a lifting hook, wherein the driving motor is fixedly arranged at the bottom of the fixed support, the driving wheel is arranged on an output shaft of the driving motor, and the winding wheel is connected with the driving wheel; the driven wheel is arranged at the top of the fixed support, one end of the transmission belt is fixedly arranged in a wheel groove of the rolling wheel, the other end of the transmission belt is connected with the lifting hook after bypassing the driven wheel, and the lifting hook is fixedly arranged on a lifting ring at the top of the adjustable weir plate.
As a further optimization of the scheme, the siphon water inlet pipe and the siphon water outlet pipe are both provided with 90-degree elbows, and the pipe diameters of the siphon water inlet pipe and the siphon water outlet pipe are the same; the length of the siphon water inlet pipe is greater than the maximum descending height of the liquid level of the total water inlet channel, the length of the siphon water outlet pipe is greater than the length of the siphon water inlet pipe, and the corresponding height difference meets the minimum siphon starting liquid level difference.
As a further optimization of the scheme, a filter tank water inlet pipe is arranged at the bottom of the water inlet well, a filter tank water inlet valve is arranged on the filter tank water inlet pipe, the water inlet valve discharges accumulated air at the siphon auxiliary exhaust pipe, and the siphon water inlet pipe and the siphon water outlet pipe are opened after being filled with water; the water inlet valve can be closed to operate in the backwashing process, the liquid level of the water separating well automatically rises, and the siphon standby state before the valve is started is restored.
The invention discloses a siphon device for eliminating oxygen and stabilizing pressure in water inflow and a using method thereof, which comprises the following steps:
1) forming a relatively stable liquid level difference: taking the adjustable weir plate out of the concave part of the fixed water retaining weir plate, and feeding water into the water separating well to enable the liquid level of the water separating well to rise;
2) compressing the gas in the siphon water outlet pipe to the top of the siphon pipe, opening the siphon auxiliary exhaust pipe to discharge the accumulated gas after the start liquid level is reached, and then closing the siphon auxiliary exhaust pipe valve;
3) the water inlet valve of the denitrification filter tank is opened, the liquid level of the water separating well is lowered, automatic suction is performed to form siphon, the siphon water inlet process is automatically started, the water inlet flow is adjusted by the siphon flow meter and the adjusting valve, the normal water inlet operation of the siphon with the fullness of 100 percent is guaranteed, and the purposes of water inlet oxygen elimination and pressure stabilization are achieved.
The siphon device for water inlet oxygen elimination and pressure stabilization suitable for the denitrification biological filter and the use method thereof have the following beneficial effects:
(1) the device has reasonable structural design, and ensures that no oxygen is filled and the oxygen elimination effect is outstanding, and the siphon pipeline fullness degree is 100 percent when water enters. The water inlet mode of freely falling and wrapping bubbles is changed into a siphon water inlet mode, and the water is introduced to dissolve oxygen: can be stably reduced from 6-8mg/l to 1-3mg/l, greatly eliminates oxygen, maintains the anoxic environment of the denitrification filter, increases the thickness of an effective anoxic filter material layer by 0.5m, increases the effective anoxic retention time by about 17 percent, and efficiently denitrifies nitrogen. Meanwhile, the consumption of carbon sources required for removing high dissolved oxygen is reduced, and the additional carbon sources are greatly saved;
(2) when the siphon water inlet operation of the device is carried out, the liquid levels of the total water inlet channel and the water inlet well are relatively constant, namely the water yield of the siphon tube is relatively stable in a short time, and the effect of stabilizing the pressure in the filter tank is achieved. The pressure fluctuation rate in the filter tank is as follows: from 8 percent to 20 percent to 0.1 percent to 0.5 percent;
(3) this device is except when initial start-up, need operate adjustable weir plate and siphon auxiliary exhaust outside, and the filtering pond filters and the whole flow of backwash, and siphon is intake homoenergetic automatic operation, and degree of automation is higher relatively, need not plus any auxiliary operation, and convenient high efficiency effectively improves the operating efficiency.
(4) The device has convenient operation and management and low construction and maintenance cost, and is suitable for the water inlet oxygen elimination and pressure stabilization of the denitrification biological filter with various scales.
(5) The device is applied to the optimization engineering of falling water distribution of the denitrification biological filter, and mainly aims to be used for the oxygen elimination and pressure stabilization of the water inlet of the denitrification biological filter; the siphon auxiliary exhaust pipe of the device mainly has the function of discharging accumulated air in the siphon water outlet pipe instead of forming a vacuum environment by vacuum suction, and the device does not need to be provided with a vacuum suction device; the siphon auxiliary exhaust pipe is matched with the liquid level of the water inlet well to rise, gas in the siphon water outlet pipe is compressed to the top of a siphon pipe, accumulated gas is discharged manually/electrically or in other modes, the water inlet well keeps dynamic liquid level change all the time when the denitrification filter tank operates, a water seal box is not required to be arranged, and the siphon effect is automatically formed by the liquid level of the water inlet well when the filter tank operates; the siphon auxiliary exhaust pipe of the device has two functions of discharging accumulated gas and destroying siphon.
Drawings
FIG. 1 is a schematic top view of a siphon device for water intake oxygen elimination and pressure stabilization according to the present invention.
FIG. 2 is a schematic diagram of a longitudinal section structure of a siphon device for eliminating oxygen and stabilizing pressure of inlet water according to the present invention.
FIG. 3 is a schematic structural diagram of a siphon device for inlet water oxygen elimination and pressure stabilization.
Detailed Description
The following describes in detail a siphon device for eliminating oxygen and stabilizing pressure of inlet water and a method for using the same according to the present invention with reference to the accompanying drawings 1-3.
A siphon device for inlet water oxygen elimination and pressure stabilization is suitable for a denitrification biological filter and comprises a siphon water inlet pipe 1, a fixed water-retaining weir plate 2, a siphon auxiliary exhaust pipe 3, a siphon flow meter 4, an adjusting valve 5, a siphon water outlet pipe 6 and an adjustable weir plate 7; the siphon water inlet pipe 1 is connected with the siphon flowmeter 4 through a flange; the water inlet of the siphon water inlet pipe 1 is positioned below the liquid level of the total water inlet channel 9, and the top of the siphon water inlet pipe 1 is connected with a siphon auxiliary exhaust pipe 3; the siphon flow meter 4 is connected with the regulating valve 5, and the regulating valve 5 is connected with the siphon water outlet pipe 6; the water outlet of the siphon water outlet pipe 6 is positioned below the liquid level of the water inlet well 10; the fixed water retaining weir plate 2 is positioned between the retaining walls of the total water inlet channel 9 and the water inlet well 10, the fixed water retaining weir plate 2 is positioned below the top of the siphon water inlet pipe 1, and the fixed water retaining weir plate 2 is provided with an adjustable weir plate 7.
The water inflow of the denitrification biological filter of the siphon water inlet pipe 1 and the siphon water outlet pipe 6 can be controlled by a siphon flow meter 4 and an adjusting valve 5 in a feedback way, the specific mode of the water amount feedback control of the siphon device comprises an automatic control system, the automatic control system comprises a controller, a flow sensor arranged at the water inlet of the denitrification biological filter and used for detecting the water inflow of the denitrification biological filter, a first liquid level sensor arranged in a main water inlet channel and used for detecting a liquid level height signal of the main water inlet channel, and a second liquid level sensor arranged in a branch water inlet well and used for detecting a liquid level height signal of a branch water inlet channel, wherein the controller is connected with the adjusting valve in a control way; the flow sensor, the first liquid level sensor and the second liquid level sensor are all connected with a controller through data signals and send detected corresponding signals to the controller; the controller compares the received corresponding signals with preset corresponding threshold values after data conversion, and controls and adjusts the opening of the valve according to the comparison result. The controller is a Siemens S7-200PLC controller, and the timer is one of a switch-on delay timer, a memory switch-on delay timer and a switch-off delay timer; the first liquid level sensor and the second liquid level sensor are both one of a float type liquid level sensor, a static pressure type liquid level sensor, an ultrasonic liquid level sensor and an optical fiber liquid level sensor.
An exhaust opening and closing valve is arranged on the siphon auxiliary exhaust pipe 3, and the controller is in control connection with the exhaust opening and closing valve; the automatic control system also comprises a timer, the timer is connected with the controller, the controller starts and closes the exhaust on-off valve at regular time through the timer, namely the exhaust on-off valve is opened to discharge accumulated gas in the siphon water outlet pipe 6 before the siphon device is started, and the exhaust on-off valve is closed when the denitrification biological filter operates normally; the exhaust opening and closing valve is a ball valve.
The fixed barricade that sets up between total inlet channel 9 and branch well 10 of fixed manger plate 2, be provided with the recess of the total inlet channel 9 of intercommunication and branch well 10 on the intermediate position of fixed manger plate 2, adjustable weir plate 7 is mutually supported with the recess shape to detachably sets up on the recess.
The siphon device also comprises an adjustable weir plate driving mechanism connected with the adjustable weir plate 7, and the controller is in control connection with the adjustable weir plate driving mechanism; the driving mechanism comprises a fixed support, a driving motor, a driving wheel, a winding wheel, a transmission belt, a driven wheel and a lifting hook, wherein the driving motor is fixedly arranged at the bottom of the fixed support, the driving wheel is arranged on an output shaft of the driving motor, and the winding wheel is in key connection with the driving wheel; the driven wheel is arranged at the top of the fixed support, one end of the transmission belt is fixedly arranged in a wheel groove of the rolling wheel, the other end of the transmission belt is connected with the lifting hook after bypassing the driven wheel, and the lifting hook is fixedly arranged on a lifting ring at the top of the adjustable weir plate.
The siphon water inlet pipe 1 and the siphon water outlet pipe 6 are both provided with 90-degree elbows, and the diameters of the elbows are the same; the length of the siphon water inlet pipe 1 is greater than the maximum descending height of the liquid level of the total water inlet channel 9, the length of the siphon water outlet pipe 6 is greater than the length of the siphon water inlet pipe 1, and the corresponding height difference meets the minimum siphon starting liquid level difference.
The bottom of branch intaking is provided with the filtering pond inlet tube, be provided with filtering pond inlet valve 8 on the filtering pond inlet tube, inlet valve 8 discharges the long-pending gas at siphon auxiliary exhaust pipe 3, opens after siphon inlet tube 1 and siphon outlet pipe 6 are filled with water. The water inlet valve 8 can be closed to operate in the backwashing process, the liquid level of the water separating well automatically rises, and the siphon standby state before the valve is started is restored.
The use method of the siphon device for water inlet oxygen elimination and pressure stabilization comprises the following steps:
1) forming a relatively stable liquid level difference: taking the adjustable weir plate 7 out of the concave part of the fixed water retaining weir plate 2, and feeding water into the water separating well 10 to enable the liquid level of the water separating well 10 to rise;
2) compressing the gas in the siphon water outlet pipe 6 to the top of the siphon pipe, opening the siphon auxiliary exhaust pipe 3 to discharge the accumulated gas after the start liquid level is reached, and then closing the siphon auxiliary exhaust pipe valve;
3) the water inlet valve 8 of the denitrification filter tank is opened, the liquid level of the water separating well 10 is lowered, automatic suction is performed to form siphon, the siphon water inlet process is automatically started, the water inlet flow is adjusted by the siphon flow meter 4 and the adjusting valve 5, the normal water inlet operation of 100% of the siphon fullness is guaranteed, and the purposes of water inlet oxygen elimination and pressure stabilization are achieved.
In fig. 1, the fixed water-retaining weir plate 2 and the adjustable weir plate 7 mainly provide a liquid level difference between the total water inlet channel 9 and the water inlet well 10 when the device is initially started, and further serve as a siphon driving force. The siphon auxiliary exhaust pipe 3 only needs to discharge accumulated air in the siphon suction water pipe 6 before the initial siphon starting, and can form a siphon vacuum state without vacuum suction, and siphon can be automatically maintained when the filter tank is in a normal filtering state and a backwashing state.
In fig. 2, siphon inlet tube 1, siphon flowmeter 4, adjusting valve 5, siphon outlet pipe 6 are connected in proper order, and siphon flowmeter 4 is connected with adjusting valve 5 and is constituteed flow measurement feedback system, the denitrification biological filter inflow of siphon inlet tube 1 and siphon outlet pipe 6 can be carried out the feedback by siphon flowmeter 4 and adjusting valve 5 and regulate and control to ensure that the water yield reaches the balance.
In fig. 3, the fixed water-blocking weir plate 2 is located below the top of the siphon water inlet pipe 1, and the fixed water-blocking weir plate 2 is provided with the adjustable weir plate 7, and the fixed water-blocking weir plate and the adjustable weir plate assist the normal operation of the siphon water inlet device. The manual/electronic branch well 10 of intaking is gone into through adjustable weir plate 7, branch well 10 liquid level rises, with gas compression to the siphon top in the siphon outlet pipe 6, after reaching the start-up liquid level, open siphon auxiliary exhaust pipe 3 and discharge the pneumatosis, then close siphon auxiliary exhaust pipe 3 valve, open denitrification filtering pond inlet valve 8, branch well 10 liquid level decline automatic suction forms the siphon, siphon water inlet process automatic start, the inflow flow can be adjusted by siphon flowmeter 4 and adjusting valve 5, guarantee siphon fill degree 100% normal water inlet operation, reach the mesh of intaking oxygen elimination and steady voltage.
Through the practical application of the siphon device for the oxygen elimination and pressure stabilization of the inlet water of the denitrification biological filter, the oxygen elimination and pressure stabilization effects are good (the dissolved oxygen is reduced from 6-8mg/l to 1-3mg/l, the pressure fluctuation rate is reduced from 8-20% to 0.1-0.5%), and the adding amount of an external carbon source required for oxygen elimination is greatly reduced.
The embodiments described above are intended to facilitate one of ordinary skill in the art in understanding and using the present invention. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the embodiments described herein, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (8)
1. The utility model provides a siphon device of oxygen absorption and steady voltage of intaking, this siphon device is applicable to the denitrification biological filter, its characterized in that: the siphon device comprises a siphon water inlet pipe (1), a fixed water retaining weir plate (2), a siphon auxiliary exhaust pipe (3), a siphon flow meter (4), an adjusting valve (5), a siphon water outlet pipe (6) and an adjustable weir plate (7); the siphon water inlet pipe (1) is connected with the siphon flowmeter (4) through a flange; the water inlet of the siphon water inlet pipe (1) is positioned below the liquid level of the main water inlet channel (9), and the top of the siphon water inlet pipe (1) is connected with a siphon auxiliary exhaust pipe (3); the siphon flow meter (4) is connected with the regulating valve (5), and the regulating valve (5) is connected with the siphon water outlet pipe (6); the water outlet of the siphon water outlet pipe (6) is positioned below the liquid level of the water inlet well (10); the fixed water retaining weir plate (2) is positioned between the retaining walls of the total water inlet channel (9) and the water inlet well (10), the fixed water retaining weir plate (2) is positioned below the top of the siphon water inlet pipe (1), and the fixed water retaining weir plate (2) is provided with an adjustable weir plate (7).
2. The siphon device for eliminating oxygen and stabilizing pressure of inlet water according to claim 1, wherein: the water inflow of the denitrification biological filter of the siphon water inlet pipe (1) and the siphon water outlet pipe (6) can be subjected to feedback regulation and control through a siphon flow meter (4) and an adjusting valve (5), the specific mode of the water amount feedback regulation and control of the siphon device comprises an automatic control system, the automatic control system comprises a controller, a flow sensor arranged at a water inlet of the denitrification biological filter is used for detecting the water inflow of the denitrification biological filter, a first liquid level sensor arranged in a main water inlet channel is used for detecting a liquid level height signal of the main water inlet channel, and a second liquid level sensor arranged in a branch water inlet well is used for detecting a liquid level height signal of the branch water inlet channel, and the controller is connected with the adjusting valve; the flow sensor, the first liquid level sensor and the second liquid level sensor are all connected with a controller through data signals and send detected corresponding signals to the controller; the controller compares the received corresponding signals with preset corresponding threshold values after data conversion, and controls and adjusts the opening of the valve according to the comparison result; the controller is a Siemens S7-200PLC controller, and the timer is one of a switch-on delay timer, a memory switch-on delay timer and a switch-off delay timer; the first liquid level sensor and the second liquid level sensor are both one of a float type liquid level sensor, a static pressure type liquid level sensor, an ultrasonic liquid level sensor and an optical fiber liquid level sensor.
3. The siphon device for intake water oxygenation and pressure stabilization according to claim 2, characterized in that: an exhaust opening and closing valve is arranged on the siphon auxiliary exhaust pipe (3), and the controller is in control connection with the exhaust opening and closing valve; the automatic control system also comprises a timer, the timer is connected with the controller, the controller starts and closes the exhaust on-off valve at regular time through the timer, namely the exhaust on-off valve is opened to discharge accumulated air in the siphon water outlet pipe (6) before the siphon device is started, and the exhaust on-off valve is closed when the denitrification biological filter operates normally; the exhaust opening and closing valve is a ball valve.
4. A siphon device for the oxygen elimination and pressure stabilization of water intake according to claim 3, characterized in that: the retaining wall that fixed manger plate (2) was fixed to be set up between the barricade of total inlet channel (9) and branch well (10), be provided with the recess of the total inlet channel of intercommunication (9) and branch well (10) on the intermediate position of fixed manger plate (2), adjustable weir plate (7) and recess shape are mutually supported to detachably sets up on the recess.
5. The siphon device for eliminating oxygen and stabilizing pressure of inlet water according to claim 4, wherein: the siphon device also comprises an adjustable weir plate driving mechanism connected with the adjustable weir plate (7), and the controller is in control connection with the adjustable weir plate driving mechanism; the driving mechanism comprises a fixed support, a driving motor, a driving wheel, a winding wheel, a transmission belt, a driven wheel and a lifting hook, wherein the driving motor is fixedly arranged at the bottom of the fixed support, the driving wheel is arranged on an output shaft of the driving motor, and the winding wheel is connected with the driving wheel; the driven wheel is arranged at the top of the fixed support, one end of the transmission belt is fixedly arranged in a wheel groove of the rolling wheel, the other end of the transmission belt is connected with the lifting hook after bypassing the driven wheel, and the lifting hook is fixedly arranged on a lifting ring at the top of the adjustable weir plate.
6. The siphon device for eliminating oxygen and stabilizing pressure of inlet water according to claim 5, wherein: the siphon water inlet pipe (1) and the siphon water outlet pipe (6) are both provided with 90-degree elbows, and the diameters of the elbows are the same; siphon inlet tube (1) length is greater than the biggest downtake height of total inlet channel (9) liquid level, and siphon outlet pipe (6) length is greater than siphon inlet tube (1) length, and corresponding difference in height should satisfy minimum siphon and start the liquid level difference.
7. The siphon device for eliminating oxygen and stabilizing pressure of inlet water according to claim 6, wherein: a filter inlet valve (8) is arranged at the bottom of the water inlet well (10), accumulated air is discharged from the water inlet valve (8) through the siphon auxiliary exhaust pipe (3), and the siphon inlet pipe (1) and the siphon outlet pipe (6) are opened after being filled with water; the water inlet valve (8) can be closed to operate in the backwashing process, the liquid level of the water separating well (10) automatically rises, and the siphon standby state before the valve is started is restored.
8. The use method of the siphon device for the oxygen elimination and the pressure stabilization of the inlet water according to claim 7, characterized by comprising the following steps:
1) forming a relatively stable liquid level difference: taking out the adjustable weir plate (7) from the concave part of the fixed water retaining weir plate (2), and feeding water into the water separating well to ensure that the liquid level of the water separating well rises;
2) compressing the gas in the siphon water outlet pipe to the top of the siphon pipe, starting the siphon auxiliary exhaust pipe (3) to discharge accumulated gas after the gas reaches the starting liquid level, and then closing the valve of the siphon auxiliary exhaust pipe (3);
3) the water inlet valve (8) of the denitrification filter is opened, the liquid level of the water separating well (10) is lowered to automatically suck to form siphon, the siphon water inlet process is automatically started, the water inlet flow is adjusted by the siphon flow meter (4) and the adjusting valve (5), the normal water inlet operation of the siphon with the filling degree of 100 percent is guaranteed, and the purposes of water inlet oxygen elimination and pressure stabilization are achieved.
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| CN201911232110.XA CN110877929A (en) | 2019-12-05 | 2019-12-05 | Water inlet oxygen elimination and pressure stabilization siphon device and using method thereof |
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| CN201911232110.XA CN110877929A (en) | 2019-12-05 | 2019-12-05 | Water inlet oxygen elimination and pressure stabilization siphon device and using method thereof |
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