CN102225808B - Checkgate apparatus and control method of accurately distributing inflow water for sewage treatment - Google Patents

Abstract

The invention relates to a checkgate apparatus and a control method of accurately distributing inflow water for sewage treatment. The apparatus is characterized in that: the apparatus comprises a checkgate assembly, a driving and transmission device, ultrasonic wave liquid indicators, a checkgate guide rail and a checkgate main board; the checkgate main body is provided with apertures and seal plates; and the driving and transmission device comprises a support which is arranged above the guide rail and comprises stand columns and a crossbeam, a controllable motor, a transmission connecting rod, and a controller which has a signal connection with the liquid indicators and a control connection with a power device. The control method comprises the following steps: 1, setting a time interval of water inflow detection and adjustment; 2, detecting reasonable water inflows of each biological processing unit; 3, determining three cases of inflow water passing through the checkgate; and 4, comparing reasonable water inflows of each biological processing unit obtained in step 1 with real water inflows of current weir crest obtained in step 2 through calculating, and processing. The apparatus which is suitable for sewage treatment has the advantages of simple technology, energy saving, low cost, high automaticity, high water discharge efficiency and good quality.

Description

Sewage disposal accurately distributes the influent weir door gear

Technical field

The present invention relates to a kind of weir gate device of control and adjusting of the water yield, specifically be used for the sewage treatment unit of sewage work, be the control set for adjusting of the biological processing unit properly distributed amount of inlet water of difference in functionality in the biological reaction tank.

Background technology

A lot of sewage works all adopt traditional activated sludge process as the main technique method of sewage disposal mostly at home.Traditional activated sludge process comprises the techniques such as AAO, oxidation ditch.Adopt sewage work's general function of all having considered biological carbon and phosphorous removal at the beginning of design of these techniques.But in actual moving process, all exist a lot of problems to cause the function of biological carbon and phosphorous removal not produce a desired effect.Here there are following problems: 1, can not promptly and accurately distribute water inlet to anaerobism and anoxic section, thus the carbon source in can not the rational and efficient use water inlet, the denitrogenation dephosphorizing processing efficiency is low; 2, the biochemical section of some sewage works arranges the water inlet water dispensing apparatus of duct type flashboard or common flashboard, can't the accurate measurement water distribution quantity and the problem of accurate flow adjustment but all exist.Based on above case study, need to improve the segmental influent water distribution system of existing sewage disposal, make the water inlet allocation proportion of biological processing unit and flow obtain accurately and timely controlling.

Summary of the invention

The object of the invention is to solve the problems of the technologies described above, provide a kind of sewage disposal accurately to distribute the influent weir door gear, this weir gate device and control method can guarantee that the amount of inlet water of sewage disposal biological processing unit obtains rationally distributing timely, make the operation of sewage treatment process stability and high efficiency ground.

The objective of the invention is to be realized by following technical proposals: sewage disposal of the present invention accurately distributes the influent weir door gear, be provided with weir gate assembly, driving and transmission mechanism, ultrasonic level gage, it is characterized in that: described weir gate assembly is provided with weir gate guide rail, weir gate mainboard, weir gate mainboard dual-side can slide up and down to be connected on the guide rail, the weir gate mainboard is provided with the aperture, this place, aperture is provided with the sealing plate of easy disassembly, is provided with sealed strip around the sealing plate; The weir gate guide rail is vertically fixed on the inboard of the water inlet crest of weir of biological processing unit, the water inlet crest of weir of biological processing unit namely is the crest of weir of irrigation channel, so the position of the guide rail of weir gate and weir gate mainboard is in the outside of irrigation channel crest of weir, biological place is lower than at the bottom of the canal of irrigation channel at the bottom of entering the pond of unit, and the bottom of described guide rail and weir gate mainboard is stretched into below the irrigation channel bottom; Described driving and transmission mechanism comprise: be installed in the power wheel and the kinematic link that are in transmission connection between support, controllable motor and motor that the top of guide rail is made of column and crossbeam and the weir gate mainboard, this kinematic link is vertically fixed on weir gate mainboard upper end, and power wheel is connected with the spindle of motor; At the weir gate frame two ultrasonic level gages that are respectively applied to measure channel median water level height and biological reaction tank median water level height are installed, and be provided with the controller that calculates the accurate water yield by weir gate and control weir gate course of action and stroke, this controller carries out signal with described ultrasonic level gage and is connected, and carries out control linkage with the power set of described weir gate.

The control method of accurate distribution influent weir door gear of the present invention:

1) being set the timed interval that flooding quantity detects and regulate is 1～10 minute, flow allow difference be reasonable flooding velocity 5～10% in;

2) utilize the apparatus and method of the distributing water-inlet carbon source of sewage treatment plant of Chinese invention patent ZL 200810102661.X to measure the rational flooding quantity of each biological processing unit by the setting-up time interval;

3) described controller obtains the altitude signal of channel median water level height and biological reaction tank median water level by described ultrasonic level gage, and judging into water is any in following three kinds of situations during by weir gate: the first situation is that current pass through the aperture free discharge on the crest of weir mainboard; The second situation is that current flow out by the aperture of flooding, and does not produce again simultaneously from the overflow of weir plate top; The third situation is the overcurrent requirement that current can not be satisfied in the aperture, and the part current pass through from the overflow of weir plate upside; Then, difference is calculated 3 kinds of different situations, calculates the instantly accurate flow of current, and the method that flooding velocity calculates is as follows:

Situation one: when current only passed through by crest of weir, at this moment the weir gate mainboard was the rise state, at this moment, and discharge Q ₁Method of calculation are as follows: Q ₁

${\mathrm{<figure-callout\; id="1"\; label="Q"\; filenames="HSA00000469856900012.png"\; state="\{\{state\}\}">Q</figure-callout>}}_1=\mathrm{mb}\sqrt{2g}{H_1}^{3/2}({\mathrm{<figure-callout\; id="3"\; label="m"\; filenames="HSA00000469856900011.png,HSA00000469856900012.png"\; state="\{\{state\}\}">m</figure-callout>}}^3/s)---1-1;$

In the formula: the b-weir gate is wide, unit: m;

H ₁-crest of weir elevation of water surface, unit: m;

The m-orifice coefficient is 0.62;

G-universal gravity constant, unit: m/s^2;

Situation two: when current are the total flooding orifice outflow, when not producing overflow again simultaneously, at this moment, discharge Q ₂Method of calculation are as follows:

${\mathrm{<figure-callout\; id="2"\; label="Q"\; filenames="HSA00000469856900011.png,HSA00000469856900012.png"\; state="\{\{state\}\}">Q</figure-callout>}}_2=\mathrm{\&mu;A}\sqrt{2g{H}_2}({\mathrm{<figure-callout\; id="3"\; label="m"\; filenames="HSA00000469856900011.png,HSA00000469856900012.png"\; state="\{\{state\}\}">m</figure-callout>}}^3/s)---1-2;$

In the formula: the orifice coefficient of μ-aperture submerge discharging flow, the orifice coefficient m when getting with free discharge is identical, i.e. μ=0.62;

The A-orifice area, unit: m ²

H ₂-the water surface is to the degree of depth at center, aperture, unit: m;

G-universal gravity constant, unit: m/s^2;

Situation three: when current can not satisfy the requirement of water yield overcurrent by orifice outflow, the part current pass through from the weir plate below; At this moment, orifice outflow adopts formula 1-2 to calculate, and goes out streamflow Q on the weir ₃Calculate and adopt formula 1-1:

Wherein each symbol content and unit are with formula 1-1 and 1-2;

4) will be from the 1st) the rational flooding quantity of each biological processing unit and the 2nd that obtains) the actual flooding velocity of the at that time crest of weir that calculates of step compares, when differing, two numerical value setting outside the permissible value scope, when needing raising or reducing flooding quantity namely to need to adjust the weir gate mainboard, enter the 4th) step; When flooding quantity is satisfied the demand, namely below 10%, when not needing to adjust flooding quantity and namely adjusting weir gate mainboard height, enter the 1st) step;

5) when needs reduce flooding quantity, the weir gate mainboard that then raises namely calculates the altitude measurement of weir gate mainboard, namely by above-mentioned steps 1) in particular case one of in 3 kinds of situations determining, utilize the formula of the calculating flooding velocity of this kind situation, calculate H ₁Or H ₂, and then draw the altitude measurement of weir gate mainboard; According to the altitude measurement of weir gate mainboard, controller control weir gate electric device adjustable checkgate mainboard is to corresponding height; Then enter the 2nd) step:

When weir gate device of the present invention and control method operation, be in closed state between weir gate mainboard and the canal for water distribution, weir gate can move up and down the regulating weir plate height at the weir plate guide rail.During less than reasonable flooding quantity, by reducing the weir gate mainboard, just can improve flooding velocity at water distribution quantity; When the water yield during greater than reasonable flooding quantity, by promoting the weir gate mainboard, just can reduce flooding velocity.Device by this water distribution mode of the present invention can guarantee that water level keeps highly consistent substantially in the channel, can accurately calculate simultaneously the instantly water distribution quantity of each weir gate, and can be by what of regulating weir plate height fine adjustment water distribution quantity, with each biological processing unit that guarantees sewage treatment unit the most rational flooding quantity is arranged, thereby be in best biochemical state and obtain the optimum handling effect.

The present invention has structure improvement, and is simple and practical, and cost is low, flexible operation, and level of automation is high, has good regulating effect.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is A-A view among Fig. 1.

The profile of product of the present invention is not subjected to the restriction of this figure, and only the profile change also belongs to protection scope of the present invention.

Embodiment

The present invention will be further described below in conjunction with drawings and Examples:

Embodiment one: sewage disposal accurately distributes the influent weir door gear, be provided with weir gate assembly, driving and transmission mechanism, ultrasonic level gage, it is characterized in that: described weir gate assembly is provided with weir gate guide rail 1, weir gate mainboard 2, weir gate mainboard dual-side can slide up and down to be connected on the guide rail, the weir gate mainboard is provided with aperture 3, this place, aperture is provided with the sealing plate 31 of easy disassembly, is provided with sealed strip around the sealing plate; The weir gate guide rail is vertically fixed on the inboard of the water inlet crest of weir of biological processing unit 32, the water inlet crest of weir of biological processing unit namely is the crest of weir of irrigation channel, so the position of the guide rail of weir gate and weir gate mainboard is in the outside of irrigation channel crest of weir, biological place advances at the bottom of the canal that is lower than irrigation channel at the bottom of the pond of unit 33, and the bottom of described guide rail and weir gate mainboard is stretched into below the irrigation channel bottom; Described driving and transmission mechanism comprise: the top that is installed in guide rail by column 7,41 and crossbeam 42 support, controllable motor 5 and the motor that consist of and weir gate mainboard between the power wheel and the kinematic link 6 that are in transmission connection, this kinematic link is vertically fixed on weir gate mainboard upper end, and power wheel is connected with the spindle of motor; At the weir gate frame two ultrasonic level gages 8,9 that are respectively applied to measure channel median water level height and biological reaction tank median water level height are installed, and be provided with the controller that calculates the accurate water yield by weir gate and control weir gate course of action and stroke, this controller carries out signal with described ultrasonic level gage and is connected, and carries out control linkage with the power set of described weir gate.

The wide b=1300mm of weir gate, height is 1000mm, port size 2 * 250 * 400mm, orifice distance weir crest 0.2m; Sewage work moved at night, and flooding quantity is less, and the inflow-rate of water turbine of water distribution weir gate is also less.

1) being set the timed interval that flooding quantity detects and regulate is 10 minutes, and it is 10% of reasonable flooding velocity that flow allows difference;

2) arts demand determines that the weir gate water distribution quantity is 600m after measured ³/ h;

3) the weir gate water inlet is situation one after measured, calculates H through formula 1-1 ₁Be 0.3m;

4) water level elevation is 6,7m on the ultrasonic level gage mensuration weir, and the biological reaction tank water level elevation is 5.9m, and calculating elevation of weir crest is 7.0m; By weir gate electric device adjustable checkgate to the 7.0m elevation; Then start the 2nd) step; Redeterminating water level on the weir, still is 6.7m, therefore, is defined as orifice outflow, and the water yield satisfies preset requirement.

Embodiment two:

The wide b=1300mm of weir gate, height is 1000mm, port size 2 * 250 * 400mm, orifice distance weir crest 0.2m; Sewage work is in more stable running status, and the water yield is moderate, and the water distribution weir gate only has the aperture submerge discharging flow;

1) being set the timed interval that flooding quantity detects and regulate is 10 minutes, and it is 10% of reasonable flooding velocity that flow allows difference;

2) arts demand determines that the weir gate water distribution quantity is 1250m after measured ³/ h;

3) the weir gate water inlet is situation two after measured, calculates H through formula 1-2 ₂Be 0.4m;

4) elevation of water surface is 6.7m on the ultrasonic level gage mensuration weir, and the biological reaction tank elevation of water surface is 5.9m, and calculating elevation of weir crest is 6.7m; By weir gate electric device adjustable checkgate to the 6.7m elevation; Then start the 2nd) step; Redeterminating water level on the weir, still is 6.7m, therefore, is defined as flooding orifice outflow, and the water yield satisfies preset requirement.

Example three:

The wide b=1300mm of weir gate, height is 1000mm, port size 2 * 250 * 400mm, orifice distance weir crest 0.2m.Sewage work moves by day, and the water yield is larger, and the inflow-rate of water turbine of water distribution weir gate is also larger;

1) being set the timed interval that flooding quantity detects and regulate is 10 minutes, and it is 10% of reasonable flooding velocity that flow allows difference;

2) arts demand determines that the weir gate water distribution quantity is 3100m after measured ³/ h;

3) the weir gate water inlet is situation three after measured, calculates H through formula 1-3 ₁Weir head is 0.3m, H ₂Be 0.7m;

4) elevation of water surface is 6.7m on the ultrasonic level gage mensuration weir, and the biological reaction tank elevation of water surface is 5.9m, and calculating elevation of weir crest is 6.4m; By weir gate electric device adjustable checkgate to the 6.4m elevation; Then start the 2nd) step;

Redeterminating water level on the weir, still is 6.7m, therefore, is defined as flooding the combination of orifice outflow and weir overflow, and the water yield satisfies preset requirement.

The present invention is through on probation, can the fine adjustment anaerobic pond, the amount of inlet water of the unit such as anoxic pond, Aerobic Pond, after the water yield is regulated, the distributed water flow of each processing unit processing requirement 6% in, given full play to the function of whole biological processing unit, the water outlet total nitrogen drops to 13mg/L by 18mg/L, and water outlet TP drops to 0.3mg/L by 0.8mg/L, water outlet nitrogen phosphorus is brought up to one-level A by one-level B, has improved the biological treatment effect of sewage work.

Should be pointed out that for those skilled in the art under the prerequisite that does not break away from the principle of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.

Claims (1)

1. a sewage disposal accurately distributes the influent weir door gear, be provided with weir gate assembly, driving and transmission mechanism, ultrasonic level gage, it is characterized in that: described weir gate assembly is provided with weir gate guide rail (1), weir gate mainboard (2), weir gate mainboard dual-side can slide up and down to be connected on the weir gate guide rail, the weir gate mainboard is provided with aperture (3), this place, aperture is provided with the sealing plate (31) of easy disassembly, is provided with sealed strip around the sealing plate; The weir gate guide rail is vertically fixed on the inboard of the water inlet crest of weir of biological processing unit (32), the water inlet crest of weir of biological processing unit namely is the crest of weir of irrigation channel, so the position of weir gate guide rail and weir gate mainboard is in the outside of irrigation channel crest of weir, (33) at the bottom of the canal that is lower than irrigation channel at the bottom of the pond of unit are entered at biological place, and the bottom of described weir gate guide rail and weir gate mainboard is stretched into below the irrigation channel bottom; Described driving and transmission mechanism comprise: be installed in the power wheel and the kinematic link (6) that are in transmission connection between support, controllable motor (5) and motor and the weir gate mainboard of top by column (7,41) and crossbeam (42) formation of weir gate guide rail, this kinematic link is vertically fixed on weir gate mainboard upper end, and power wheel is connected with the spindle of motor; At the weir gate frame two ultrasonic level gages (8,9) that are respectively applied to measure channel median water level height and biological reaction tank median water level height are installed, and be provided with the controller that calculates the accurate water yield by weir gate and control weir gate course of action and stroke, this controller carries out signal with described ultrasonic level gage and is connected, and carries out control linkage with the power set of described weir gate.

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