Pulse pool adsorption simulation system

Abstract

A pulse pool adsorption simulation system is configured to simulate operation of a pulse pool adsorption system in practical application, and comprises a pulse generating unit, a pulse generating unit and a pulse generating unit, the pulse adsorption unit is arranged at the downstream of the pulse generation unit and comprises an adsorption layer; an effluent weir; wherein the pulse adsorption unit is composed of a plurality of pulse adsorption modules, the plurality of pulse adsorption modules are detachably installed together in the vertical direction, the pulse generation tube is composed of a plurality of pulse generation modules, and the plurality of pulse generation modules are detachably installed together in the vertical direction. Each of the plurality of pulse adsorption modules is aligned with a corresponding one of the plurality of pulse generation modules in the horizontal direction, so that the heights of the adsorption layer and the pulse generation tube can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of pulse pool adsorption simulation systems, more specifically, a kind of pulse pool adsorption simulation system can be used to optimize the process operating parameter of actual operation of pulse pool adsorption system. BACKGROUND

[0002] Pulse pool adsorption system can remove pollutants in wastewater by suspended carbon sludge layer therein, suspended carbon sludge layer can be more fully contacted with wastewater under the action of hydraulic pulse, to better remove pollutants in wastewater.

[0003] But the running effect of pulse pool adsorption system is difficult to simulate under laboratory conditions, the treatment effect of pulse pool adsorption system for target pollutants cannot be evaluated, resulting in the running parameters of pulse pool adsorption system cannot be optimized.

[0004] Therefore, it is desirable to propose a kind of pulse pool adsorption simulation system to improve the defects in the prior art described above. SUMMARY

[0005] According to an aspect of the utility model, a kind of pulse pool adsorption simulation system is presented, simulation system is configured to simulate the operation of actual application pulse pool adsorption system, comprising: pulse generation unit, including the pulse generation tube extending in vertical direction, pulse generation unit is configured to generate hydraulic pulse;Pulse adsorption unit is arranged downstream of pulse generation unit, and hydraulic pulse generated by pulse generation unit exits pulse generation unit from the bottom of pulse generation tube, and flows into pulse adsorption unit from the bottom of pulse adsorption unit, and pulse adsorption unit includes: adsorption layer, adsorption layer is displaced under the action of hydraulic pulse, and adsorption layer is configured to adsorb pollutants in wastewater;Water weir is arranged at the top of pulse adsorption unit, and wastewater passes through adsorption layer in pulse adsorption unit and exits simulation pulse pool adsorption system from water weir;Wherein, pulse adsorption unit is composed of multiple pulse adsorption modules, multiple pulse adsorption modules are detachably mounted together in vertical direction, pulse generation tube is composed of multiple pulse generation modules, multiple pulse generation modules are detachably mounted together in vertical direction, and each of multiple pulse adsorption modules is aligned with corresponding one of multiple pulse generation modules in horizontal direction, so that the height of adsorption layer and pulse generation tube can be adjusted.

[0006] According to the scheme, the operating condition of actual application pulse pool adsorption system can be simulated by pulse pool adsorption simulation system, especially the operating condition of pulse pool adsorption system under different carbon bed thickness can be simulated. Using the simulation system described above, the feasibility of actual application pulse pool adsorption system for treating target wastewater can be verified, and the process operating parameters of pulse pool adsorption system can be optimized.

[0007] In some embodiments, the height of the pulse generating unit and the pulse adsorption unit of the pulse pool adsorption simulation system can be consistent with the height of the pulse generating unit and the pulse adsorption unit of the pulse pool adsorption system in practical application.

[0008] In some embodiments, the simulation system can further include a dosing unit, the dosing unit being arranged upstream of the pulse generating unit, and the dosing unit including a reaction tank into which a water purification agent is dosed, the water purification agent including activated carbon, a coagulant and a flocculant.

[0009] In some embodiments, the pulse adsorption unit can include a mudguard extending in a vertical plane to separate the pulse adsorption unit into a first region and a second region, the adsorption layer being located in the first region, and a carbon sludge outlet located in the second region, wastewater entering the pulse adsorption unit from the pulse generating unit first flowing through the first region, then part of the wastewater flowing upwards to the effluent weir, and the other part of the wastewater passing through the mudguard into the second region, and then exiting the pulse pool adsorption simulation system in the form of sludge discharge water from the carbon sludge outlet.

[0010] In some embodiments, the mudguard can be composed of a plurality of mudguard components which are detachably mounted together in a vertical direction.

[0011] According to this embodiment, the simulation system can simulate the operating conditions of the pulse pool adsorption system in practical application under different mudguard heights, thereby simulating the operating conditions of the pulse pool adsorption system in practical application under different carbon bed thicknesses.

[0012] In some embodiments, the pulse adsorption unit can further include a clarification zone located between the adsorption layer and the effluent weir, the clarification zone including a plurality of clarification pipes extending in a direction inclined to the horizontal.

[0013] In some embodiments, the pulse adsorption unit can further include a flow regulation plate arranged at the bottom of the first region, and a single flow regulation plate including two plates extending in a direction inclined to the horizontal, the two plates converging on a horizontal line.

[0014] In some embodiments, the pulse generating unit can include a vacuum device arranged at the top of the pulse generating pipe and configured to create a vacuum to suck liquid in the pulse generating pipe to generate a hydraulic pulse.

[0015] In some embodiments, the pulse generating unit can include a high liquid level switch and a low liquid level switch, the high liquid level switch being arranged above the low liquid level switch, and the high liquid level switch and the low liquid level switch being associated with the vacuum device; when the liquid level in the pulse generating pipe rises to the high liquid level switch, the vacuum device stops creating a vacuum; and when the liquid level in the pulse generating pipe falls to the low liquid level switch, the vacuum device starts creating a vacuum.

[0016] In some schemes, the pulse adsorption unit can be provided with an observation window through which the interior of the pulse adsorption unit can be observed.

[0017] In some schemes, the water outlet height of the reaction tank is higher than the height of the water outlet weir.

[0018] In some schemes, the simulation system can further include a reflux pipeline that connects the carbon sludge outlet to the reaction tank.

[0019] In some schemes, the hydraulic load of the wastewater in the adsorption layer can be between 6 m / h and 12 m / h.

[0020] In some schemes, the hydraulic retention time of the wastewater in the adsorption layer can be between 20 minutes and 40 minutes, and / or the suspended solids concentration in the adsorption layer can be between 0.4 g / L and 2.5 g / L.

[0021] In some schemes, the height difference between the high liquid level switch and the low liquid level switch can be between 40 cm and 80 cm, and / or the horizontal cross-sectional area of the pulse generation pipe can be between 2% and 4% of the horizontal cross-sectional area of the adsorption layer.

[0022] In some schemes, the flow rate of the wastewater from the pulse generation unit into the pulse adsorption unit through the perforated pipe can be between 0.5 m / s and 1.0 m / s.

[0023] In some schemes, the diameter of the clarification pipe can be between 30 mm and 50 mm, and / or the angle between the extension direction of the clarification pipe and the horizontal plane can be between 55° and 65°. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A schematic diagram of a pulse tank adsorption simulation system according to an embodiment of the present application is shown;

[0025] Figure 2 A partial schematic diagram of Figure 1 is shown.

[0026] REFERENCE NUMERALS:

[0027] 10 water inlet tank

[0028] 12 water inlet pump

[0029] 14 water inlet flow meter

[0030] 100 pulse tank adsorption simulation system

[0031] 110 dosing unit

[0032] 112 first reaction tank

[0033] 114 second reaction tank

[0034] 116 Third Reaction Pool

[0035] 120 pulse generation unit

[0036] 121 Pulse Generator Tube

[0037] 122 Pulse Generator Module

[0038] 124 Vacuum Equipment

[0039] 125 Vacuum Breaker Valve

[0040] 126 High Liquid Level Switch

[0041] 128 Low liquid level switch

[0042] 130 pulse adsorption unit

[0043] 131 Pulse Adsorption Module

[0044] 132 Rectifier Board

[0045] 133 Adsorption layer

[0046] 134 Mudguard

[0047] 135 Mudguard Components

[0048] 136 Charcoal Sludge Export

[0049] 137 Clarifying Tube

[0050] 138 Outflow Weir

[0051] 140 Return Pipe Detailed Implementation

[0052] To make the objectives, solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Unless otherwise stated, the terms used herein have their ordinary meanings in the art. The same reference numerals in the drawings represent the same parts.

[0053] Figure 1A schematic diagram of a pulse tank adsorption simulation system 100 according to an embodiment of the present application is shown. The pulse tank adsorption simulation system 100 mainly comprises a dosing unit 110, a pulse generation unit 120 and a pulse adsorption unit 130. The dosing unit 110 is used to add water purification chemicals to wastewater. The pulse generation unit 120 is used to generate hydraulic pulses. The pulse adsorption unit 130 is used to adsorb pollutants in wastewater. Wastewater flows through the dosing unit 110, the pulse generation unit 120 and the pulse adsorption unit 130 in sequence. The pulse tank adsorption simulation system 100 is configured to simulate the operation of a pulse tank adsorption system in actual application, to verify the feasibility of the pulse tank adsorption system in treating target wastewater, and to optimize the process operation parameters of the pulse tank adsorption system.

[0054] The dosing unit 110 can include three reaction tanks, i.e. a first reaction tank 112, a second reaction tank 114 and a third reaction tank 116. Wastewater flows through the first reaction tank 112, the second reaction tank 114 and the third reaction tank 116 in sequence. Powdered activated carbon can be added to the first reaction tank 112, coagulant can be added to the second reaction tank 114, and flocculant can be added to the third reaction tank 116. The wastewater to be treated is uniformly mixed in the influent tank 10, and then pumped into the dosing unit 110 by the influent pump 12 at a constant flow rate. The flow rate of the influent can be monitored by the influent flow meter 14. The wastewater reacts with activated carbon, coagulant and flocculant in the first reaction tank 112, the second reaction tank 114 and the third reaction tank 116 in sequence, generating alum flowers containing powdered activated carbon particles. The volume of the alum flowers gradually increases and becomes dense in the reaction tanks 112, 114 and 116. Thereafter, the wastewater enters the pulse generation unit 120 under the action of gravity.

[0055] Optionally, the hydraulic retention time of the wastewater in each reaction tank 112, 114 and 116 can be between 2 minutes and 6 minutes, ensuring that the wastewater is in sufficient contact with the water purification chemicals. In addition, the outlet height of the third reaction tank 116 is higher than the height of the outlet weir 138 of the pulse adsorption unit 130, so that the wastewater can flow under the action of gravity.

[0056] The pulse generating unit 120 comprises a vacuum device 124 and a pulse generating pipe 121 extending in the vertical direction. Under the suction of the fan of the vacuum device 124, the top of the pulse generating pipe 121 gradually forms a vacuum environment, and the water level in the pulse generating pipe 121 rises under the suction of the vacuum negative pressure. When the water level rises to the high liquid level switch 126, the vacuum breaking valve 125 is triggered to open, and external air enters the pulse generating pipe 121 through the vacuum breaking valve 125 (the amount of external air entering exceeds the suction amount of the fan of the vacuum device 124), causing the vacuum environment in the pulse generating pipe 121 to disappear, and the water level to drop under the action of gravity. When the water level drops to the low liquid level switch 128, the vacuum breaking valve 125 is triggered to close, and external air cannot enter the pulse generating pipe through the vacuum breaking valve 125, and the top of the pulse generating pipe 121 again forms a vacuum environment under the action of the vacuum device 124, causing the water level in the pulse generating pipe 121 to rise. The above process is periodically repeated to generate periodic hydraulic pulses.

[0057] The liquid level difference between the high liquid level switch 126 and the low liquid level switch 128 can be regarded as the pulse intensity, and the pulse intensity can be between 40 cm and 80 cm. In addition, the horizontal cross-sectional area of the pulse generating pipe 121 can be about 2% to 4% of the horizontal cross-sectional area of the adsorption layer 133 of the pulse adsorption unit 130.

[0058] The hydraulic pulses generated by the pulse generating unit 120 exit the pulse generating unit 120 from the bottom of the pulse generating pipe 121 and flow into the pulse adsorption unit 130 from the perforated pipe at the bottom of the pulse adsorption unit 130. The pulse adsorption unit 130 mainly comprises an adsorption layer 133 filled with carbon sludge with strong adsorption and a water outlet weir 138 arranged at the top of the pulse adsorption unit 130. Due to the periodic rise and fall of the water level in the pulse generating unit 120 (i.e. pulse action), the adsorption layer 133 in the pulse adsorption unit 130 correspondingly exhibits periodic expansion and contraction, which effectively enhances the contact and collision of the wastewater with the adsorption layer 133, and realizes the contact flocculation of the suspended particles and the adsorption of the dissolved organic matter by the adsorption layer 133.

[0059] The adsorption effect of the adsorption layer 133 on pollutants is affected by factors such as hydraulic load, residence time, and suspended solids concentration. Hydraulic load is usually expressed as the upward flow velocity (unit: m / h), which indirectly reflects the water treatment capacity of the water treatment device. A high hydraulic load (i.e., a high upward flow velocity) indicates that the device treats a larger volume of water per unit time. The hydraulic load of the water flow in the adsorption layer 133 can be between 6 m / h and 12 m / h, preferably between 7 m / h and 9 m / h. Selecting an appropriate hydraulic load ensures that the adsorption layer 133 expands sufficiently without loss of adsorption layer. The hydraulic residence time can be between 20 minutes and 40 minutes, ensuring sufficient contact between the wastewater and the adsorption layer 133 while maintaining water treatment efficiency. The suspended solids concentration can be between 0.4 g / L and 2.5 g / L, ensuring the purification effect of the adsorption layer 133 while controlling costs.

[0060] Preferably, the pulse adsorption unit 130 may include a mudguard 134 and a sludge outlet 136. The mudguard 134 extends in a vertical plane to divide the pulse adsorption unit 130 into a first region (e.g., Figure 1 The left area shown) and the second area (as shown) Figure 1 (As shown in the right-hand area), the adsorption layer 133 is located in the first area, and the second area can serve as a waste carbon sludge collection area. The carbon sludge outlet 136 is located in the second area. Wastewater entering the pulse adsorption unit 130 from the pulse generation unit 120 first flows through the first area, then a portion of the wastewater flows upward to the effluent weir 138, and the other portion of the wastewater passes over the baffle plate 134 and enters the second area, and then leaves the pulse pool adsorption simulation system 100 from the carbon sludge outlet 136 in the form of sludge discharge water.

[0061] Preferably, the pulse adsorption unit 130 may further include a clarification zone located between the adsorption layer 133 and the effluent weir 138. The clarification zone includes multiple clarification tubes 137 extending in a direction inclined to the horizontal plane. After passing through the adsorption layer 133, the wastewater continues to rise and passes through the clarification tubes 137, finally being discharged through the effluent weir 138, completing the removal of solid particles and dissolved organic matter. Based on the principle of shallow sedimentation, the clarification tubes 137 further clarify the small flocs in the wastewater. The diameter of the clarification tubes 137 can be between 30mm and 50mm, the length can be approximately 1.0m, and the angle of inclination to the horizontal plane can be approximately 60°. The distance between the upper end of the clarification tube 137 and the effluent weir 138 (i.e., the height of the clear water zone) can be between 1.0m and 2.0m.

[0062] Preferably, the pulse adsorption unit 130 can further comprise a rectifying plate 132 arranged at the bottom of the first region, the single rectifying plate 132 comprising two flat plates extending obliquely to the horizontal plane, the two flat plates converging on a horizontal line. Through the rectifying effect of the herringbone-shaped rectifying plate 132, the water flow is uniformly distributed in the pulse adsorption unit 130 and rises to slowly lift the adsorption layer 133, thereby enhancing the adsorption of the adsorption layer 133 to the suspended particles.

[0063] Preferably, the pulse adsorption unit 130 can further be provided with an observation window through which the interior of the pulse adsorption unit 130 can be observed to intuitively understand the running state of the pulse adsorption unit 130. The diameter of the observation window can be, for example, between 150 mm and 200 mm. For example, multiple observation windows can be provided for observing the rectifying plate 132, the adsorption layer 133, and the waste carbon sludge collection area of the pulse adsorption unit 130, etc.

[0064] In addition, the simulation system 100 can further comprise a backflow pipeline 140 connecting the carbon sludge outlet 136 to an upstream process unit, for example, to the first reaction tank 112. When the waste carbon sludge is backflowed to the upstream process unit, the residence time of the powdered activated carbon in the water treatment system is prolonged, and the amount of target pollutants adsorbed by the powdered activated carbon is correspondingly increased.

[0065] In order to better simulate the running state of the actually running pulse tank adsorption system, as shown in Figure 2 As shown, the pulse adsorption unit 130 is composed of multiple pulse adsorption modules 131 which are detachably installed together in the vertical direction, and the pulse generation unit 120 is composed of multiple pulse generation modules 122 which are detachably installed together in the vertical direction, each of the multiple pulse adsorption modules 131 is aligned with a corresponding one of the multiple pulse generation modules 122 in the horizontal direction, so that the height of the adsorption layer 133 and the pulse generation pipe 121 can be adjusted.

[0066] The multiple pulse generation modules 122 and the multiple pulse adsorption modules 131 can be bolted into the pulse generation unit 120 and the pulse adsorption unit 130, respectively, and the multiple mudguard components 135 can be bolted into the mudguard 134. Therefore, by increasing or decreasing the detachable pulse generation modules 122 and the pulse adsorption modules 131, the height of the mudguard 134 can be correspondingly lengthened or shortened by increasing or decreasing the detachable mudguard components 135, thereby simulating the process running effect under different carbon bed thickness conditions. Under the condition of a certain hydraulic load, the higher the mudguard 134, the greater the carbon bed thickness, and the longer the contact time of the carbon sludge and the raw water. By using the above-mentioned simulation system 100, the feasibility of the actual application of the pulse tank adsorption system for treating target wastewater can be verified, and the process running parameters of the pulse tank adsorption system can be optimized.

[0067] Using the above simulation system 100, the water in a certain reservoir was purified, and the test results are shown in Table 1.

[0068] Table 1 Processing effect of simulation system 100

[0069]

[0070] Using the above simulation system 100, the turbidity and algae removal rate of the water in a certain reservoir were 68% and 90%, respectively. The removal rates of permanganate index and dimethyl isochroman were 39% and 75%, respectively. Turbidity and algae can be regarded as indicators reflecting suspended pollutants, and permanganate index and dimethyl isochroman can be regarded as indicators reflecting dissolved pollutants.

[0071] The various exemplary embodiments of the present application are described in detail herein with reference to preferred embodiments, however, it will be understood by those skilled in the art that various modifications and changes can be made to the above specific embodiments without departing from the spirit of the present application, and various technical features and structures proposed by the present application can also be combined without exceeding the scope of the present application, and the scope of protection of the present application is determined by the appended claims.

Claims

1. A pulse-sieve adsorption simulation system configured to simulate operation of a pulse-sieve adsorption system in an actual application, characterized by, Comprise: a pulse generating unit comprising a pulse generating pipe extending in a vertical direction, the pulse generating unit configured to generate hydraulic pulses; a pulse adsorption unit arranged downstream of the pulse generating unit, the hydraulic pulses generated by the pulse generating unit exiting the pulse generating unit from a bottom of the pulse generating pipe and flowing into the pulse adsorption unit from a bottom of the pulse adsorption unit, the pulse adsorption unit comprising: an adsorption layer, the adsorption layer being displaced under the action of the hydraulic pulses, the adsorption layer configured to adsorb pollutants in wastewater; a water outlet weir arranged at a top of the pulse adsorption unit, wastewater in the pulse adsorption unit passing through the adsorption layer from the water outlet weir; wherein the pulse adsorption unit is composed of a plurality of pulse adsorption modules, the plurality of pulse adsorption modules being detachably mounted together in a vertical direction, the pulse generating pipe is composed of a plurality of pulse generating modules, the plurality of pulse generating modules being detachably mounted together in a vertical direction, each of the plurality of pulse adsorption modules is aligned with a corresponding one of the plurality of pulse generating modules in a horizontal direction, so that the height of the adsorption layer and the pulse generating pipe can be adjusted.

2. The system of claim 1, wherein, The height of the pulse generating unit and the pulse adsorption unit of the pulse pool adsorption simulation system is consistent with the height of the pulse generating unit and the pulse adsorption unit of the actual application pulse pool adsorption system.

3. The system of claim 1, wherein, Further comprising a dosing unit, the dosing unit being arranged upstream of the pulse generating unit, and the dosing unit comprising a reaction tank, clean water chemicals being dosed into the reaction tank, the clean water chemicals comprising activated carbon, coagulant and flocculant.

4. The system of claim 3, wherein, The pulse adsorption unit comprises: a mudguard extending in a vertical plane to separate the pulse adsorption unit into a first region and a second region, the adsorption layer being located in the first region; a carbon sludge outlet located in the second region; wastewater entering the pulse adsorption unit from the pulse generating unit first flows through the first region, then part of the wastewater flows upward to the water outlet weir, and the other part of the wastewater passes through the mudguard into the second region, and then exits the pulse pool adsorption simulation system in the form of sludge water from the carbon sludge outlet.

5. The system of claim 4, wherein, The mudguard is composed of a plurality of mudguard components, the plurality of mudguard components being detachably mounted together in a vertical direction.

6. The system of claim 5, wherein, The pulse adsorption unit further comprises a clarification zone located between the adsorption layer and the water outlet weir, the clarification zone comprising a plurality of clarification pipes extending in a direction inclined to the horizontal.

7. The system of claim 5, wherein, The pulse adsorption unit further comprises a flow straightening plate arranged at the bottom of the first region, the flow straightening plate comprising two plates extending inclined to the horizontal, the two plates converging on a horizontal line.

8. The system of claim 1, wherein, The pulse generating unit comprises a vacuum device arranged at the top of the pulse generating pipe and configured to create a vacuum to suck liquid in the pulse generating pipe to generate the hydraulic pulses.

9. The system of claim 8, wherein, The pulse generating unit comprises a high liquid level switch and a low liquid level switch, the high liquid level switch is arranged above the low liquid level switch, and the high liquid level switch and the low liquid level switch are associated with the vacuum equipment; When the liquid level in the pulse generating pipe rises to reach the high liquid level switch, the vacuum equipment stops manufacturing vacuum; When the liquid level in the pulse generating pipe falls to reach the low liquid level switch, the vacuum equipment starts manufacturing vacuum.

10. The system of claim 1, wherein, The pulse adsorption unit is provided with an observation window through which the inside of the pulse adsorption unit can be observed.

11. The system of claim 3, wherein, The water outlet height of the reaction pool is higher than the height of the water outlet weir.

12. The system of claim 4, wherein, It also comprises a backflow pipeline which connects the carbon sludge outlet to the reaction pool.

13. The system of claim 1, wherein, The hydraulic load of the wastewater in the adsorption layer is between 6 m / h and 12 m / h.

14. The system for simulating the adsorption of a pulse column according to claim 9, wherein, The height difference between the high liquid level switch and the low liquid level switch is between 40 cm and 80 cm, and / or the horizontal cross-sectional area of the pulse generating pipe is between 2% and 4% of the horizontal cross-sectional area of the adsorption layer.

15. The system of claim 6, wherein, The diameter of the clarification pipe is between 30 mm and 50 mm, and / or the angle between the extension direction of the clarification pipe and the horizontal plane is between 55° and 65°.

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