CN110156227B - Sewage treatment system and method - Google Patents
Sewage treatment system and method Download PDFInfo
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- CN110156227B CN110156227B CN201910469952.0A CN201910469952A CN110156227B CN 110156227 B CN110156227 B CN 110156227B CN 201910469952 A CN201910469952 A CN 201910469952A CN 110156227 B CN110156227 B CN 110156227B
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- sewage
- auger
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- 239000010865 sewage Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000003814 drug Substances 0.000 claims abstract description 110
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 22
- 239000000460 chlorine Substances 0.000 claims description 22
- 229910052801 chlorine Inorganic materials 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 18
- 238000012856 packing Methods 0.000 claims description 16
- 239000012425 OXONE® Substances 0.000 claims description 15
- HJKYXKSLRZKNSI-UHFFFAOYSA-I pentapotassium;hydrogen sulfate;oxido sulfate;sulfuric acid Chemical compound [K+].[K+].[K+].[K+].[K+].OS([O-])(=O)=O.[O-]S([O-])(=O)=O.OS(=O)(=O)O[O-].OS(=O)(=O)O[O-] HJKYXKSLRZKNSI-UHFFFAOYSA-I 0.000 claims description 15
- 238000004659 sterilization and disinfection Methods 0.000 claims description 12
- CEJLBZWIKQJOAT-UHFFFAOYSA-N dichloroisocyanuric acid Chemical compound ClN1C(=O)NC(=O)N(Cl)C1=O CEJLBZWIKQJOAT-UHFFFAOYSA-N 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- 230000000903 blocking effect Effects 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 239000005708 Sodium hypochlorite Substances 0.000 description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 4
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 239000000645 desinfectant Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/32—Details relating to UV-irradiation devices
- C02F2201/326—Lamp control systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
Abstract
The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment system and method, which comprises a first medicine inlet hopper and a medicine dissolving pool, wherein an outlet of the first medicine inlet hopper is communicated with a sewage inlet, a first auger is further arranged at the position of the outlet of the first medicine inlet hopper, the first auger is connected with a first PLC (programmable logic controller), the sewage inlet is communicated with an outlet of a second medicine inlet hopper, a backflow device is arranged between the sewage inlet of a Y-shaped filter and the second medicine inlet hopper at the sewage inlet, the backflow device comprises a second auger, a tubular ultraviolet device, an electromagnetic flow meter and a first electromagnetic valve, and the second auger, the tubular ultraviolet device, the electromagnetic flow meter and the first electromagnetic valve are sequentially arranged along the direction from the sewage inlet to the outlet of the second medicine inlet hopper.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment system and method.
Background
Although sodium hypochlorite is the most commonly used disinfectant in the field of sewage disinfection at present, sodium hypochlorite has the characteristics of low price and good disinfection effect, the sodium hypochlorite has the disadvantages of high dissolving speed and low effective chlorine content, so that the dosage of the sodium hypochlorite in the use process is too large, the residual chlorine in the effluent is too high, and meanwhile, a large storage space is needed, thereby bringing potential safety hazards to human health and environment. The potassium monopersulfate is named as 'prince' and has good disinfection effect and no chemical residue, but has the problem of insufficient active molecules in the use process. Sodium dichloroisocyanurate is a novel sewage disinfectant, has the characteristics of high effective chlorine content and long action time, but still has the problem of overhigh residual chlorine in effluent, so the prior art needs further improvement.
Disclosure of Invention
The invention aims to provide a sewage treatment system with good disinfection effect and short treatment time.
Based on the purpose, the invention adopts the following technical scheme:
a sewage treatment system comprises a first medicine inlet hopper and a medicine dissolving pool, wherein an outlet of the first medicine inlet hopper is communicated with a sewage inlet, a first auger is further arranged at an outlet of the first medicine inlet hopper and connected with a first PLC (programmable logic controller), a sewage inlet is communicated with an outlet of a second medicine inlet hopper, a Y-shaped filter is arranged at the sewage inlet, a backflow device is arranged between the sewage inlet and the second medicine inlet hopper and comprises a second auger, a tubular ultraviolet device, an electromagnetic flow meter and a first electromagnetic valve, the second auger, the tubular ultraviolet device, the electromagnetic flow meter and the first electromagnetic valve are sequentially arranged along the direction from the sewage inlet to the outlet of the second medicine inlet hopper, the tubular ultraviolet device is connected with the second PLC, the electromagnetic flow meter is connected with a third PLC, the first electromagnetic valve is connected with a fourth PLC, the first electromagnetic valve is communicated with a backflow port, the backflow port is positioned below the second auger, a flow pump is arranged between the first electromagnetic valve and the backflow port, the second is advanced medicine fill export and is still linked up medicine dissolving tank water inlet, second advances medicine fill exit position department and still is equipped with the third auger, the fifth PLC controller is connected to the third auger, medicine dissolving tank water inlet 141 department is equipped with the fourth auger, medicine dissolving tank delivery port is equipped with chlorine residue detector and second solenoid valve, chlorine residue detector connects the sixth PLC controller, the seventh PLC controller is connected to the second solenoid valve, this first PLC controller, the second PLC controller, the third PLC controller, the fourth PLC controller, the fifth PLC controller, the eighth PLC controller is all connected to sixth PLC controller and seventh PLC controller.
Furthermore, the medicine dissolving pool is internally provided with a medicine blocking net which comprises an L-shaped plate, the L-shaped plate is made of a metal net, and the L-shaped edge of the L-shaped plate is fixedly connected with the side wall of the medicine dissolving pool to form a net-shaped cavity structure with an opening at the upper part.
Furthermore, dissolve the medicine pond in still be equipped with the water conservancy diversion net, the water conservancy diversion net includes the bottom plate, the bottom plate is the metal mesh, fixed several water conservancy diversion strip on the bottom plate, the transversal trapezoidal cross-section that personally submits of water conservancy diversion strip, the long limit and the bottom plate fixed connection of this trapezoidal cross-section.
Further, the bottom plate face of water conservancy diversion net be parallel with the bottom surface of dissolving the medicine pond, the water conservancy diversion net is two and is fixed along the even equidistant interval of direction of height of dissolving the medicine pond, one side minor face and two long limits of top guide plate respectively with dissolve medicine pond lateral wall fixed connection in two liang of adjacent water conservancy diversion nets, the opposite side minor face has the interval with dissolving between the medicine pond lateral wall, form first water conservancy diversion mouth, one side minor face and two long limits of below guide plate respectively with dissolve medicine pond lateral wall fixed connection in two liang of adjacent water conservancy diversion nets, the opposite side minor face with dissolve and have the interval between the medicine pond lateral wall, form second water conservancy diversion mouth, first water conservancy diversion mouth and second water conservancy diversion mouth are located respectively and dissolve the relative both sides of medicine pond, form rivers along the structure that S type direction flows.
Furthermore, the top of the medicine dissolving pool is also provided with an ultrasonic liquid level meter which is connected with a ninth PLC controller, and the ninth controller is connected with an eighth controller.
The method for using the sewage treatment system comprises the following steps:
(1) starting a first PLC controller, controlling the first auger to rotate by the first PLC controller, feeding potassium monopersulfate into the first medicine inlet hopper, feeding sewage into the first medicine inlet hopper from a sewage inlet, starting a second auger, mixing the potassium monopersulfate and the sewage to obtain mixed liquid, and controlling a tubular ultraviolet device by the second PLC controller to disinfect the mixed liquid to obtain primary disinfected sewage;
(2) opening a first electromagnetic valve, mixing a part of the preliminary disinfection sewage with the mixed liquid from a reflux port, opening a fifth PLC controller, controlling a third packing auger to rotate by the fifth PLC controller, adding sodium dichloroisocyanurate into a second medicine inlet hopper, starting a fourth packing auger, mixing the other part of the preliminary disinfection sewage with the sodium dichloroisocyanurate at the fourth packing auger, flowing into a medicine dissolving pool, and then flowing out of an outlet of the medicine dissolving pool, detecting residual chlorine amount at the outlet of the medicine dissolving pool by a residual chlorine detector and sending information to a sixth PLC controller, when the residual chlorine amount is less than a lower limit threshold value, sending a signal to an eighth PLC controller by the sixth PLC controller, sending a signal to a second PLC controller by the eighth PLC controller, controlling the tubular ultraviolet device to increase power by the second PLC controller, and when the residual chlorine amount is greater than an upper limit threshold value, controlling the tubular ultraviolet device to decrease power by the second PLC controller;
(3) the third PLC controller 11 sends a flow signal to an eighth PLC controller, when the flow is larger than a threshold value, the eighth PLC controller sends a signal to a seventh PLC controller, the seventh PLC controller controls the second electromagnetic valve to reduce the opening, when the flow is smaller than the threshold value, the eighth PLC controller sends a signal to the seventh PLC controller, and the seventh PLC controller controls the second electromagnetic valve to increase the opening.
According to the invention, the potassium monopersulfate and the sodium dichloroisocyanurate are jointly used in the sewage treatment device, the release of the active ingredients of the potassium monopersulfate is enhanced in an ultraviolet mode, the sewage is jointly treated, the usage amount of the sodium dichloroisocyanurate is reduced, the cost is saved, the residual chlorine in the effluent is reduced, the disinfection time and the disinfection effect can be ensured, and the harm of excessive residual chlorine to a human body is avoided. The medicament is added in a packing auger mode, so that the corrosion of the medicament to equipment is reduced, and the service life of the medicament feeding device is prolonged. The potassium monopersulfate is put into the first medicine feeding hopper, and the potassium monopersulfate is mixed with sewage and then enters the tubular ultraviolet device, the tubular ultraviolet device accelerates hydrolysis of the potassium monopersulfate, so that the potassium monopersulfate releases high-energy active substances, the release efficiency of the potassium monopersulfate is enhanced, and the sewage treatment effect is improved.
Drawings
FIG. 1 is a system flow diagram of the present invention;
FIG. 2 is a schematic view of the construction of the drug dissolving tank;
FIG. 3 is a diagram showing the positional relationship between the medicine blocking net and the medicine dissolving pool;
fig. 4 is a schematic structural view of a flow guide net.
Detailed Description
Fig. 1-4 show a sewage treatment system, which comprises a first medicine feeding hopper 1 and a medicine dissolving tank 14, wherein an outlet of the first medicine feeding hopper 1 is communicated with a sewage inlet 3 through a first pipeline 2, a first screw conveyor 4 is arranged in the first pipeline 2 at the position of the outlet of the first medicine feeding hopper 1, the first screw conveyor 4 is connected with a first PLC controller 5, the sewage inlet 3 is communicated with an outlet of a second medicine feeding hopper 7 through a second pipeline 6, a Y-shaped filter 8 is arranged at the position of the sewage inlet 3, a reflux device 9 is arranged between the sewage inlet 3 and the second medicine feeding hopper 7, the reflux device 9 comprises a second screw conveyor 91, a tubular ultraviolet device 92, an electromagnetic flow meter 93 and a first electromagnetic valve 94, the second screw conveyor 91, the tubular ultraviolet device 92, the electromagnetic flow meter 93 and the first electromagnetic valve 94 are sequentially arranged in the second pipeline 6 along the direction from the sewage inlet 3 to the outlet of the second medicine feeding hopper 7, the ultraviolet device 92 is connected with the second PLC controller 10, the electromagnetic flow meter 93 is connected with a third PLC controller 11, the first electromagnetic valve 94 is connected with a fourth PLC controller 12, the first electromagnetic valve 94 is communicated with a return port 96 through a third pipeline 95, a flow pump 97 is arranged on the third pipeline 95, the return port 96 is positioned below the second packing auger 91, the outlet of the second medicine inlet hopper 7 is further communicated with a medicine dissolving pool water inlet 141 through a fourth pipeline 13, a third packing auger 15 is also arranged in the second pipeline 6 at the outlet position of the second medicine inlet hopper 7, the third packing auger 15 is connected with a fifth PLC controller 16, a fourth packing auger 17 is arranged in the fourth pipeline 13 at the water inlet 141 of the medicine dissolving pool, a medicine dissolving pool water outlet 142 is communicated with a fifth pipeline 18, a residual chlorine detector 19 and a second electromagnetic valve 20 are arranged on the fifth pipeline 18, the residual chlorine detector 19 is connected with the sixth PLC controller 21, the second electromagnetic valve 20 is connected with a seventh PLC controller 22, and the first PLC controller 5, the second PLC controller 10, the third PLC controller 11, The fourth PLC controller 12, the fifth PLC controller 16, the sixth PLC controller 21 and the seventh PLC controller 22 are all connected with an eighth PLC controller 23. Dissolve the medicine pond 14 in be equipped with and block medicine net 24, block medicine net 24 and include L template 241, L template 241 is formed by the metal mesh preparation, the L shape both sides border of L template 241 and the L template downside border and the lateral wall fixed connection who dissolves medicine pond 14, have the interval between L template upper side and the roof that dissolves medicine pond 14, form the open-ended netted cavity structures in top. The medicine dissolving pool 14 is also internally provided with a flow guide net 25, the flow guide net 25 comprises a bottom plate 251, the bottom plate 251 is a metal net, twenty flow guide strips 252 are fixed on the bottom plate 251, the length directions of the twenty flow guide strips 252 are parallel in the same plane, two ends of each flow guide strip 252 are fixedly connected with the side wall of the medicine dissolving pool, the twenty flow guide strips 252 are uniformly arranged at equal intervals along the length direction of the bottom plate 251, the cross section of each flow guide strip 252 is a trapezoid cross section, the long side of the trapezoid cross section is fixedly connected with the bottom plate 251, the surface of the bottom plate 251 of the flow guide net 25 is parallel to the bottom surface of the medicine dissolving pool 14, the flow guide nets 25 are two and are uniformly fixed at equal intervals along the height direction of the medicine dissolving pool 14, the short side edge 251 and the two long side edges 252 of the upper flow guide plate in every two adjacent flow guide nets 25 are respectively fixedly connected with the side wall of the medicine dissolving pool 14, an interval is arranged between the short side edge 251 and the side wall of the medicine dissolving pool 14, so as to form a first flow guide opening 253, the short side 251 and the long side 252 on one side of the lower guide plate in each two adjacent guide nets 25 are respectively and fixedly connected with the side wall of the medicine dissolving pool 14, a space is arranged between the short side 251 on the other side and the side wall of the medicine dissolving pool 14 to form a second guide opening 254, and the first guide opening 253 and the second guide opening 254 are respectively positioned on two opposite sides of the medicine dissolving pool 14 to form a structure that water flows along the S-shaped direction. An ultrasonic liquid level meter 26 is further arranged above the medicine dissolving pool 14, the ultrasonic liquid level meter 26 is connected with a ninth PLC 27, and the ninth PLC 27 is connected with an eighth PLC 23.
The first auger 4, the second auger 91, the third auger 15, the fourth auger 17, the first electromagnetic valve 94 and the second electromagnetic valve 20 are all connected with a motor.
The method for using the sewage treatment system comprises the following steps:
(1) starting a first PLC (programmable logic controller) 5, controlling a first auger 4 to rotate by the first PLC 5, putting potassium monopersulfate into a first medicine inlet hopper 1, feeding sewage from a sewage inlet 3, starting a second auger 91, mixing the potassium monopersulfate and the sewage to obtain a mixed solution, and controlling a tubular ultraviolet device 92 by a second PLC 10 to disinfect the mixed solution to obtain primary disinfected sewage;
(2) opening a first electromagnetic valve 94, mixing a part of the preliminary disinfection sewage with the mixed liquid from a return port 96, opening a fifth PLC controller 16, controlling the third packing auger 15 to rotate by the fifth PLC controller 16, adding sodium dichloroisocyanurate into the second medicine inlet hopper 7, starting a fourth packing auger 17, mixing the other part of the preliminary disinfection sewage with the sodium dichloroisocyanurate at the fourth packing auger 17, flowing into a medicine dissolving tank 14, flowing out from an outlet of the medicine dissolving tank 14, detecting the residual chlorine amount at the outlet of the medicine dissolving tank 14 by a residual chlorine detector 19, sending information to a sixth PLC controller 21, when the residual chlorine amount is less than the lower limit threshold value, the sixth PLC controller 21 sends a signal to the eighth PLC controller 23, the eighth PLC controller 23 sends a signal to the second PLC controller 10, the second PLC controller 10 controls the tubular ultraviolet device 92 to increase the power, when the residual chlorine amount is greater than the upper limit threshold value, the second PLC controller 10 controls the tubular ultraviolet device 92 to reduce power;
(3) the third PLC controller 11 sends a flow signal to the eighth PLC controller 23, when the flow rate is greater than the threshold, the eighth PLC controller 23 sends a signal to the seventh PLC controller 22, the seventh PLC controller 22 controls the second solenoid valve 20 to decrease the opening degree, when the flow rate is less than the threshold, the eighth PLC controller 23 sends a signal to the seventh PLC controller 22, and the seventh PLC controller 22 controls the second solenoid valve 20 to increase the opening degree.
When the ultrasonic liquid level meter measures that the liquid level in the medicine dissolving pool 14 is high, the ultrasonic liquid level meter 26 sends a signal to the ninth PLC controller 27, the ninth PLC controller 27 sends the eighth PLC controller 23, the eighth PLC controller 23 sends a signal to the fourth PLC controller 12, the fourth PLC controller 12 reduces the opening degree of the first electromagnetic valve 94, the electromagnetic flowmeter 93 is connected with the third PLC controller 11, and the electromagnetic flowmeter 93 sends flow information to the eighth PLC controller 23.
When the ultrasonic liquid level meter measures that the liquid level in the medicine dissolving pool 14 is low, the ultrasonic liquid level meter 26 sends a signal to the ninth PLC controller 27, the ninth PLC controller 27 sends the eighth PLC controller 23, the eighth PLC controller 23 sends a signal to the fourth PLC controller 12, the fourth PLC controller 12 increases the opening degree of the first electromagnetic valve 94, the electromagnetic flowmeter 93 is connected with the third PLC controller 11, and the electromagnetic flowmeter 93 sends flow information to the eighth PLC controller 23.
Claims (3)
1. A sewage treatment system is characterized by comprising a first medicine inlet hopper and a medicine dissolving pool, wherein an outlet of the first medicine inlet hopper is communicated with a sewage inlet, a first auger is further arranged at the position of the outlet of the first medicine inlet hopper and connected with a first PLC (programmable logic controller), the sewage inlet is communicated with an outlet of a second medicine inlet hopper, a Y-shaped filter is arranged at the sewage inlet, a backflow device is arranged between the sewage inlet and the second medicine inlet hopper and comprises a second auger, a tubular ultraviolet device, an electromagnetic flowmeter and a first electromagnetic valve, the second auger, the tubular ultraviolet device, the electromagnetic flowmeter and the first electromagnetic valve are sequentially arranged along the direction from the sewage inlet to the outlet of the second medicine inlet hopper, the tubular ultraviolet device is connected with the second PLC, the electromagnetic flowmeter is connected with a third PLC, the first electromagnetic valve is connected with a fourth PLC, the first electromagnetic valve is communicated with a backflow port, and the backflow port is positioned below the second auger, a flow pump is arranged between the first electromagnetic valve and the reflux port, the outlet of the second medicine feeding hopper is also communicated with the water inlet of the medicine dissolving pool, a third packing auger is arranged at the outlet of the second medicine feeding hopper and connected with a fifth PLC (programmable logic controller), a fourth packing auger is arranged at the water inlet of the medicine dissolving pool, a residual chlorine detector and a second electromagnetic valve are arranged at the water outlet of the medicine dissolving pool, the residual chlorine detector is connected with a sixth PLC, the second electromagnetic valve is connected with a seventh PLC, and the first PLC, the second PLC, the third PLC, the fourth PLC, the fifth PLC, the sixth PLC and the seventh PLC are all connected with an eighth PLC; a medicine blocking net is arranged in the medicine dissolving pool and comprises an L-shaped plate, the L-shaped plate is made of a metal net, and the L-shaped edge of the L-shaped plate is fixedly connected with the side wall of the medicine dissolving pool to form a net-shaped cavity structure with an opening at the upper part; the drug dissolving pool is also internally provided with a flow guide net which comprises a bottom plate, the bottom plate is a metal net, a plurality of flow guide strips are fixed on the bottom plate, the cross sections of the flow guide strips are trapezoidal, and the long sides of the trapezoidal cross sections are fixedly connected with the bottom plate; bottom plate face of water conservancy diversion net be parallel with the bottom surface of dissolving the medicine pond, the water conservancy diversion net is two and evenly equidistant fixed along the direction of height of dissolving the medicine pond, one side minor face and two long limits of top guide plate respectively with dissolve medicine pond lateral wall fixed connection in two liang of adjacent water conservancy diversion nets, the opposite side minor face has the interval with dissolving between the medicine pond lateral wall, form first water conservancy diversion mouth, one side minor face and two long limits of below guide plate respectively with dissolve medicine pond lateral wall fixed connection in two liang of adjacent water conservancy diversion nets, the opposite side minor face has the interval with dissolving between the medicine pond lateral wall, form the second water conservancy diversion mouth, first water conservancy diversion mouth and second water conservancy diversion mouth are located the relative both sides of dissolving the medicine pond respectively, form the structure that rivers flow along S type direction, put into potassium monopersulfate in the first medicine fill, put into sodium dichloroisocyanurate in the second medicine fill.
2. The sewage treatment system of claim 1, wherein an ultrasonic liquid level meter is further arranged above the drug dissolving tank, the ultrasonic liquid level meter is connected with a ninth PLC, and the ninth controller is connected with an eighth controller.
3. A method of using the wastewater treatment system of any of claims 1-2, comprising the steps of:
(1) starting a first PLC controller, controlling the first auger to rotate by the first PLC controller, feeding potassium monopersulfate into the first medicine inlet hopper, feeding sewage into the first medicine inlet hopper from a sewage inlet, starting a second auger, mixing the potassium monopersulfate and the sewage to obtain mixed liquid, and controlling a tubular ultraviolet device by the second PLC controller to disinfect the mixed liquid to obtain primary disinfected sewage;
(2) opening a first electromagnetic valve, mixing a part of the preliminary disinfection sewage with the mixed liquid from a reflux port, opening a fifth PLC controller, controlling a third packing auger to rotate by the fifth PLC controller, adding sodium dichloroisocyanurate into a second medicine inlet hopper, starting a fourth packing auger, mixing the other part of the preliminary disinfection sewage with the sodium dichloroisocyanurate at the fourth packing auger, flowing into a medicine dissolving pool, and then flowing out of an outlet of the medicine dissolving pool, detecting residual chlorine amount at the outlet of the medicine dissolving pool by a residual chlorine detector and sending information to a sixth PLC controller, when the residual chlorine amount is less than a lower limit threshold value, sending a signal to an eighth PLC controller by the sixth PLC controller, sending a signal to a second PLC controller by the eighth PLC controller, controlling the tubular ultraviolet device to increase power by the second PLC controller, and when the residual chlorine amount is greater than an upper limit threshold value, controlling the tubular ultraviolet device to decrease power by the second PLC controller;
(3) the third PLC controller sends a flow signal to the eighth PLC controller, when the flow is larger than a threshold value, the eighth PLC controller sends a signal to the seventh PLC controller, the seventh PLC controller controls the second electromagnetic valve to reduce the opening, when the flow is smaller than the threshold value, the eighth PLC controller sends a signal to the seventh PLC controller, and the seventh PLC controller controls the second electromagnetic valve to increase the opening.
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| CN201910469952.0A CN110156227B (en) | 2019-05-31 | 2019-05-31 | Sewage treatment system and method |
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| CN201910469952.0A CN110156227B (en) | 2019-05-31 | 2019-05-31 | Sewage treatment system and method |
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| CN110156227B true CN110156227B (en) | 2021-12-03 |
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