CN220811995U - Water supply disinfection system - Google Patents
Water supply disinfection system Download PDFInfo
- Publication number
- CN220811995U CN220811995U CN202220838521.4U CN202220838521U CN220811995U CN 220811995 U CN220811995 U CN 220811995U CN 202220838521 U CN202220838521 U CN 202220838521U CN 220811995 U CN220811995 U CN 220811995U
- Authority
- CN
- China
- Prior art keywords
- water supply
- raw material
- disinfectant
- pipeline
- sodium chlorite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 63
- 238000004659 sterilization and disinfection Methods 0.000 title claims abstract description 23
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000006243 chemical reaction Methods 0.000 claims abstract description 50
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229960002218 sodium chlorite Drugs 0.000 claims abstract description 42
- UKLNMMHNWFDKNT-UHFFFAOYSA-M sodium chlorite Chemical compound [Na+].[O-]Cl=O UKLNMMHNWFDKNT-UHFFFAOYSA-M 0.000 claims abstract description 41
- 239000007864 aqueous solution Substances 0.000 claims abstract description 36
- 239000000645 desinfectant Substances 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 239000004155 Chlorine dioxide Substances 0.000 claims abstract description 22
- 235000019398 chlorine dioxide Nutrition 0.000 claims abstract description 22
- 238000002360 preparation method Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 239000008400 supply water Substances 0.000 claims abstract description 3
- 239000002994 raw material Substances 0.000 claims description 75
- 239000000243 solution Substances 0.000 claims description 7
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 208000031320 Teratogenesis Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000000249 desinfective effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- PVGBHEUCHKGFQP-UHFFFAOYSA-N sodium;n-[5-amino-2-(4-aminophenyl)sulfonylphenyl]sulfonylacetamide Chemical compound [Na+].CC(=O)NS(=O)(=O)C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 PVGBHEUCHKGFQP-UHFFFAOYSA-N 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Abstract
The utility model discloses a water supply disinfection system, which comprises a chlorine dioxide disinfectant preparation unit and a water supply pipeline, wherein the water supply pipeline is provided with a pressure sensor for detecting whether the water supply pipeline starts to supply water, a flowmeter for detecting water supply flow and a disinfectant inlet; the chlorine dioxide disinfectant preparation unit comprises a sodium chlorite aqueous solution adding unit, a hydrochloric acid adding unit, a reaction kettle and a control device; the disinfectant delivery outlet is connected with the disinfectant feeding port through a pipeline, the pressure sensor, the flowmeter and the liquid level meter transmit detection signals to the control device, and the control device controls the two metering pumps of the two feeding units to work. The utility model realizes the on-site preparation and on-site use of the chlorine dioxide and realizes the real-time disinfection treatment of the water supply by putting the chlorine dioxide and the reaction residual liquid into the water supply in real time.
Description
Technical Field
The utility model relates to a water supply disinfection system.
Background
Liquid chlorine has been widely used in water supply disinfection treatment processes, but chlorine disinfection produces "tri-induced" substances (cancer, teratogenesis and mutagensis) such as Trihalomethanes (THMs), haloacetic acids (HAAS), and thus, people began to disinfect water supply by replacing liquid chlorine with chlorine dioxide. However, chlorine dioxide is unstable and highly corrosive, and is not easy to store and transport, so that development of equipment capable of being prepared and used on site has become a precondition for disinfecting water supply by using chlorine dioxide.
Disclosure of utility model
Aiming at the problems existing in the prior art, the utility model aims to provide a water supply disinfection system.
In order to achieve the above purpose, the water supply disinfection system comprises a chlorine dioxide disinfectant preparation unit and a water supply pipeline, wherein the water supply pipeline is provided with a pressure sensor for detecting whether the water supply pipeline starts to supply water, a flowmeter for detecting water supply flow and a disinfectant inlet; the chlorine dioxide disinfectant preparation unit comprises a sodium chlorite aqueous solution adding unit, a hydrochloric acid adding unit, a reaction kettle and a control device, wherein the sodium chlorite aqueous solution adding unit and the hydrochloric acid adding unit both comprise a raw material barrel, a connecting pipeline and a metering pump, the raw material barrel is of a closed structure, a liquid level meter for detecting the liquid level of raw materials in the raw material barrel in real time and a one-way air inlet valve for balancing the internal pressure and the external pressure of the raw material barrel are arranged on the raw material barrel, the two raw material barrels are respectively filled with sodium chlorite aqueous solution and hydrochloric acid, the reaction kettle is of a vertical structure, the whole reaction kettle is in a tubular shape with end walls at two ends, the upper end wall is provided with a raw material input port, the lower end wall is provided with a disinfectant output port, an inlet pipeline of the metering pump is inserted into the raw material barrel, and an outlet pipeline of the metering pump is connected with the raw material input port; the disinfectant delivery outlet is connected with the disinfectant feeding port through a pipeline, the pressure sensor, the flowmeter and the liquid level meter serving as a feedback device of the corresponding raw material actual output quantity are used for transmitting detection signals to the control device, and the control device controls the two metering pumps of the two feeding units to work so as to feed the sodium chlorite aqueous solution and the hydrochloric acid to the reaction kettle.
Further, a one-way valve is arranged at the inlet of the inlet pipeline of the metering pump.
Further, a back pressure valve is arranged on an outlet pipeline of the metering pump.
Further, the metering pump is a diaphragm metering pump, and the liquid level meter is an ultrasonic liquid level meter or a floating ball type liquid level meter.
Further, the raw material input port of the reaction kettle is externally connected with a T-shaped three-way joint, the middle interface of the three-way joint is directly or through a pipeline connected with the raw material input port, and two interfaces of the three-way joint which are arranged on the same line are respectively connected with the outlet pipelines of the two metering pumps.
Further, the inner cavity of the reaction kettle has a sufficient length to allow the two raw materials to complete the reaction before flowing to the disinfectant outlet at the lower end of the reaction kettle.
Further, the inner cavity of the reaction kettle is cylindrical, the diameter of the inner cavity is 20-80mm, and the length of the inner cavity is 200-600mm.
Further, the reaction kettle consists of a cylindrical pipe body in the middle and ends buckled at two ends of the cylindrical pipe body, the upper end is provided with the raw material input port, and the lower end is provided with the disinfectant output port.
Further, the concentration of the sodium chlorite aqueous solution is 8%, the concentration of the hydrochloric acid is 9%, and the sodium chlorite aqueous solution and the hydrochloric acid are added to the reaction kettle according to the volume ratio of 1:1.
The utility model realizes the on-site preparation and on-site use of the chlorine dioxide and realizes the real-time disinfection treatment of the water supply by putting the chlorine dioxide and the reaction residual liquid into the water supply in real time.
The utility model utilizes the liquid level meter to feed back the actual output quantity of the raw materials, so that the control device can control the flow of the metering pump in real time according to the actual output quantity, and ensures that the two raw materials are added according to the set proportion and the set quantity. The vertical tubular reaction kettle is adopted, and raw materials are utilized to react while flowing, so that the rapid and full reaction of the raw materials is ensured. The pressure sensor is used for detecting whether water supply is started in the water supply pipeline, so that the disinfectant is prevented from being thrown into the water supply pipeline when no water exists, and the water supply pipeline is prevented from being corroded and damaged. Through setting up the flowmeter for chlorine dioxide disinfectant preparation unit can be according to the throughput of water supply flow adjustment disinfectant, both guaranteed the effective disinfection to the water, avoid too much disinfectant to be thrown into the water again.
The one-way valve is arranged at the inlet of the metering pump inlet pipeline, so that raw material backflow is prevented, and the phenomenon that the flow channel resistance is increased and even the flow channel is blocked due to raw material crystallization caused by emptying of the metering pump and the pipeline is avoided. The back pressure valve is arranged on the outlet pipeline of the metering pump, and the back pressure valve and the one-way valve are utilized to form a raw material retaining structure, so that raw materials are prevented from flowing back and flowing out from the outlet pipeline to the downstream, and simultaneously, the raw materials in the upstream pipeline of the back pressure valve, the metering pump and the raw material barrel are prevented from being sucked out when negative pressure occurs in the pipeline at the outlet side of the back pressure valve. The T-shaped three-way joint is used for receiving two raw materials at the raw material input port of the reaction kettle, so that the two raw materials are forcedly mixed in advance, the reaction of the raw materials is accelerated, and the two raw materials are mixed more fully after entering the reaction kettle. The sodium chlorite water solution with the concentration of 8 percent and the hydrochloric acid with the concentration of 9 percent are adopted as raw materials, so that the two raw materials can be ensured to react rapidly and fully in a reaction kettle, and the chlorine dioxide conversion rate of more than 95 percent is obtained.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model.
In the figure: 1 raw material barrel I, 2 raw material barrel II, 3 reation kettle, 3.1 reation kettle body, 3.2 reation kettle end, 3.3 connecting pipes, 3.4T font three way connection, 4 measuring pump I, 5 measuring pump II, 6 floater type level gauge, 6.1 level gauge body of rod, 6.2 level gauge floater, 7 one-way admission valve, 8 check valves, 9 backpressure valves, 10 raw material barrel covers, 11 pressure sensor, 12 flowmeter.
Detailed Description
The present utility model will be described with reference to examples.
Fig. 1 shows an example of the water supply disinfection system of the present utility model.
As shown in the drawing, the water supply sterilizing system in this example includes a chlorine dioxide disinfectant preparing unit located at an upper portion and a water supply line located at a lower portion, wherein a pressure sensor 11, a flow meter 12 and a disinfectant inlet are provided on the water supply line, the pressure sensor 11 is used for detecting whether the water supply line starts water supply, the flow meter 12 is used for detecting a water supply flow rate in the water supply line, and the pressure sensor 11 and the flow meter 12 are electrically connected with a control device in the chlorine dioxide corresponding preparing unit and transmit signals to the control device.
The chlorine dioxide disinfectant preparation unit comprises a reaction kettle 3, a sodium chlorite aqueous solution adding unit positioned at the left side of the reaction kettle 3, a hydrochloric acid adding unit positioned at the right side of the reaction kettle 3 and a control device; the sodium chlorite aqueous solution adding unit comprises a raw material barrel 1, a metering pump 4 and connecting pipelines at the upper and lower sides of the metering pump, wherein an inlet pipeline of the metering pump 4 is inserted in the raw material barrel 1, a one-way valve 8 is arranged at the inlet of the inlet pipeline of the metering pump, a back pressure valve 9 is arranged on an outlet pipeline of the metering pump 4, sodium chlorite aqueous solution is contained in the raw material barrel 1, the metering pump 4 sucks the sodium chlorite aqueous solution in the raw material barrel 1 and conveys the sodium chlorite aqueous solution to the reaction kettle 3 along the direction indicated by an arrow at the upper left side in the drawing, the raw material barrel 1 is of a closed structure, a floating ball type liquid level meter 6 is inserted on the top wall of the raw material barrel 1, a floating ball type liquid level meter 6.2 floats on the liquid level of the sodium chlorite aqueous solution and moves along a liquid level meter rod body 6.1 along with the lifting of the liquid level, a one-way air inlet valve 7 and a raw material barrel cover 10 are also arranged on the top wall of the raw material barrel 1 and used for detecting the liquid level of the sodium chlorite aqueous solution in real time, and transmitting detection signals to a control device, and when the liquid level of the sodium chlorite aqueous solution descends, external air enters the raw material barrel 1 through the one-way air inlet valve 7 to keep the pressure balance of the raw material barrel 1; the hydrochloric acid adding unit and the sodium chlorite aqueous solution adding unit have the same structure, and the second metering pump 5 pumps the hydrochloric acid in the second raw material barrel 2 and conveys the hydrochloric acid to the reaction kettle 3 along the direction indicated by the arrow on the upper right side in the figure; the reaction kettle 3 is of a vertical structure, is integrally tubular, is provided with end walls at two ends, and consists of a cylindrical pipe body 3.1 in the middle and end heads 3.2 buckled at two ends of the cylindrical pipe body, wherein a raw material input port is arranged on an upper end head 3.2, a disinfectant output port is arranged on a lower end head 3.2, the raw material input port is provided with a T-shaped three-way joint 3.4 through a connecting pipe 3.3, the middle interface of the three-way joint 3.4 is connected with the connecting pipe 3.3, two interfaces of the three-way joint 3.4 arranged on a straight line are respectively connected with outlet pipelines of a first metering pump 4 and a second metering pump 5, and the disinfectant output port on the lower end head 3.2 of the reaction kettle 3 is connected with a disinfectant input port on a water supply pipe through the pipelines.
The sodium chlorite aqueous solution is 8% sodium chlorite aqueous solution, the hydrochloric acid is 9% hydrochloric acid, and the two are added according to the volume ratio of 1:1.
The sodium chlorite water solution with the concentration of 8 percent and the hydrochloric acid with the concentration of 9 percent are used and added according to the volume ratio of 1:1, so that the two raw materials can react rapidly and fully, and the chlorine dioxide conversion rate of more than 95 percent is obtained.
The first metering pump 4 and the second metering pump 5 are diaphragm metering pumps, the liquid level meter 6 is a floating ball type liquid level meter, and of course, various known metering pumps with applicable types can be adopted, and the liquid level meter can adopt various applicable types such as an ultrasonic liquid level meter.
Because the sodium chlorite aqueous solution and the hydrochloric acid react in the reaction kettle 3 while flowing, in order to ensure that the entered sodium chlorite aqueous solution and the hydrochloric acid fully react before flowing to a disinfectant output port at the lower end of the reaction kettle 3, the inner cavity of the reaction kettle 3 needs to have a sufficient length, and meanwhile, although the three-way joint 3.4 is utilized to forcedly mix the two raw materials, the diameter of the inner cavity of the reaction kettle 3 cannot be too large in order to ensure that the two raw materials are fully mixed, the diameter of the inner cavity of the reaction kettle 3 can be selected within a range of 20-80mm, and the length of the inner cavity can be selected within a range of 200-600 mm.
During operation, firstly, adding 8% sodium chlorite aqueous solution into the first raw material barrel 1, adding 9% hydrochloric acid with the same volume into the second raw material barrel 2, setting the corresponding working frequencies of the two metering pumps according to the water supply flow, and then starting the disinfection system. When the pressure sensor 11 detects that water supply is started in the water supply pipeline, the control device starts the two metering pumps to start working, and controls the two metering pumps to feed corresponding amounts of sodium chlorite aqueous solution and hydrochloric acid into the reaction kettle 3 according to the volume ratio of 1:1 according to the water supply flow detected by the flow meter 12, the sodium chlorite aqueous solution and the hydrochloric acid enter the reaction kettle 3 to react to generate chlorine dioxide with the dosage corresponding to the water supply flow and form disinfectant to be fed into the water supply, so that continuous disinfection treatment of the water supply is started.
When the water supply flow rate changes, the control device controls the two metering pumps to change the working frequency, the raw material adding amount and the yield of chlorine dioxide in the disinfectant, so that the dosage of the chlorine dioxide added into the water supply corresponds to the water supply flow rate.
With the operation of the two metering pumps, the sodium chlorite aqueous solution and the hydrochloric acid are extracted from the respective raw material barrels and enter the reaction kettle 3 after being converged in the three-way joint 3.4, and the two raw materials start to react from the convergence until the two raw materials completely and fully react in the reaction kettle 3 and in the flowing process from top to bottom.
Along with the continuous extraction of the sodium chlorite aqueous solution in the raw material barrel I1, the liquid level of the sodium chlorite aqueous solution is lowered along with the continuous extraction, and external air enters the barrel through the one-way air inlet valve 7 so as to balance the internal and external pressure of the raw material barrel I1. Meanwhile, the liquid level meter 6 on the first raw material barrel 1 detects the liquid level value of the sodium chlorite aqueous solution in real time, and transmits a liquid level value signal to the control device in real time, and the control device adjusts the working frequency of the first metering pump 4 according to the actual output quantity of the sodium chlorite aqueous solution reflected by the change of the liquid level value, so that the actual output quantity of the sodium chlorite aqueous solution is the same as the required output quantity, and the sodium chlorite aqueous solution is ensured to be added to the reaction kettle 3 according to the set quantity. The control device controls the metering pump II 5 to add hydrochloric acid with the same volume as the sodium chlorite aqueous solution to the reaction kettle 3 in the same way while the metering pump I4 is added with the sodium chlorite aqueous solution, so that the two raw materials are added to the reaction kettle 3 according to the adding proportion of the volume ratio of 1:1.
It should be noted that the technical solution protected by the present utility model may have various other specific embodiments that can be made by those skilled in the art, and the above examples are only for illustrating the protection scope of the present utility model and not limiting the protection scope of the present utility model.
Claims (9)
1. The water supply disinfection system is characterized by comprising a chlorine dioxide disinfectant preparation unit and a water supply pipeline, wherein the water supply pipeline is provided with a pressure sensor for detecting whether the water supply pipeline starts to supply water, a flowmeter for detecting water supply flow and a disinfectant inlet; the chlorine dioxide disinfectant preparation unit comprises a sodium chlorite aqueous solution adding unit, a hydrochloric acid adding unit, a reaction kettle and a control device, wherein the sodium chlorite aqueous solution adding unit and the hydrochloric acid adding unit both comprise a raw material barrel, a connecting pipeline and a metering pump, the raw material barrel is of a closed structure, a liquid level meter for detecting the liquid level of raw materials in the raw material barrel in real time and a one-way air inlet valve for balancing the internal pressure and the external pressure of the raw material barrel are arranged on the raw material barrel, the two raw material barrels are respectively filled with sodium chlorite aqueous solution and hydrochloric acid, the reaction kettle is of a vertical structure, the whole reaction kettle is in a tubular shape with end walls at two ends, the upper end wall is provided with a raw material input port, the lower end wall is provided with a disinfectant output port, an inlet pipeline of the metering pump is inserted into the raw material barrel, and an outlet pipeline of the metering pump is connected with the raw material input port; the disinfectant delivery outlet is connected with the disinfectant feeding port through a pipeline, the pressure sensor, the flowmeter and the liquid level meter serving as a feedback device of the corresponding raw material actual output quantity are used for transmitting detection signals to the control device, and the control device controls the two metering pumps of the two feeding units to work so as to feed the sodium chlorite aqueous solution and the hydrochloric acid to the reaction kettle.
2. A water supply disinfection system as claimed in claim 1, wherein the inlet of the metering pump inlet line is provided with a one-way valve.
3. A water supply disinfection system as claimed in claim 2, wherein a back pressure valve is provided on the outlet line of said metering pump.
4. The water supply disinfection system of claim 1, wherein said metering pump is a diaphragm metering pump, said level gauge being an ultrasonic level gauge or a float gauge.
5. The water supply disinfection system of claim 1, wherein said raw material input port of said reaction kettle is externally connected with a T-shaped three-way joint, the middle interface of said three-way joint is directly or through a pipeline connected with said raw material input port, and two interfaces arranged on a straight line of said three-way joint are respectively connected with the outlet pipelines of two said metering pumps.
6. The water supply disinfection system of claim 1, wherein the interior cavity of said reaction vessel is of sufficient length to allow said aqueous sodium chlorite solution and said hydrochloric acid to react prior to flowing to said disinfectant delivery outlet at the lower end of the reaction vessel.
7. The water supply disinfection system of claim 6, wherein the reactor has a cylindrical cavity with a diameter of 20-80mm and a length of 200-600mm.
8. The water supply disinfection system of claim 7, wherein said reaction vessel comprises a central cylindrical tube body and ends fastened at both ends thereof, said raw material inlet being provided on an upper end and said disinfectant outlet being provided on a lower end.
9. The water supply disinfection system of claim 1, wherein the aqueous sodium chlorite solution is an aqueous sodium chlorite solution with a concentration of 8%, the hydrochloric acid is hydrochloric acid with a concentration of 9%, and the aqueous sodium chlorite solution and the hydrochloric acid are added to the reaction kettle in a volume ratio of 1:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220838521.4U CN220811995U (en) | 2022-04-13 | 2022-04-13 | Water supply disinfection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220838521.4U CN220811995U (en) | 2022-04-13 | 2022-04-13 | Water supply disinfection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220811995U true CN220811995U (en) | 2024-04-19 |
Family
ID=90674864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220838521.4U Active CN220811995U (en) | 2022-04-13 | 2022-04-13 | Water supply disinfection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220811995U (en) |
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2022
- 2022-04-13 CN CN202220838521.4U patent/CN220811995U/en active Active
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