Sodium hypochlorite disinfection system for underground water source of small-scale water supply area

Abstract

A sodium hypochlorite disinfection system for an underground water source in a small-scale water supply area comprises a deep-well pump 10, a sodium hypochlorite solvent tank 20, a disinfectant pump 30, a mixer 40, a flow meter 50 and a residual chlorine detector 60, and the deep-well pump 10 is a water pump for pumping the underground water source. The drinking water treatment device has the beneficial effects that the drinking water treatment device and system are reasonably configured, so that the sodium hypochlorite effect of drinking water is remarkably improved, the water quality of the drinking water is ensured, the residual chlorine of the drinking water is effectively controlled, the complexity of a disinfection system is reduced, and the occupied area of the system is remarkably compressed; and the device is particularly suitable for providing clean water sources for small-scale water supply areas and has outstanding practicability.

Description

TECHNICAL FIELD

[0001] The utility model relates to tap water purification technology especially relates to a small scale water supply area underground water source sodium hypochlorite disinfection system. BACKGROUND

[0002] In the water supply system of the life drinking water, need to carry out purification and disinfection treatment to water source, the treatment process of large water plant mainly includes coagulation, sedimentation, filtration, disinfection etc. basic treatment technology, disinfectant mainly uses sodium hypochlorite, and large water plant has the clear water pool with enough volume, and sodium hypochlorite disinfectant can reach the uniform mixing effect with water in the clear water pool, and the problem of uneven mixing, poor disinfection effect and uneven chlorination can not be produced. But for some life communities or towns far from municipal water supply pipe network, it is not suitable to connect the water supply pipe network of city, and it is also not suitable to use the water supply system of large water plant, and it is necessary to use some economic, applicable and safe water supply facilities, and there is high-quality underground water source in some areas, and the high-quality underground water source can be used to supply water for the community in close range. Using high-quality underground water source can avoid the filtration treatment of large water plant, and simplify system equipment, but to reach the safety standard of drinking water quality, disinfection treatment is still needed. In addition, the water supply equipment of life community needs to have certain water supply capacity, to be close to water consumption point as much as possible, and to realize miniaturization as much as possible to adapt to the setting of various geographical conditions, and for the water supply equipment of such life community, the main technical problem of realizing miniaturization is: what kind of disinfection technical scheme is used to achieve uniform mixing purpose and good disinfection effect. At present, there are also some miniaturized drinking water purification and disinfection devices, and there are various drinking water purification and disinfection schemes, mainly including ultraviolet disinfection and chlorination disinfection. Ultraviolet disinfection is often used in small water purification systems, but ultraviolet does not have long-term disinfection effect, and for the water supply system of community, the water quality kept in user pipeline for a long time will become poor. And sodium hypochlorite disinfection is a common purification method for large water plant, and a large pool and a long pipeline are needed to ensure disinfection effect and avoid disinfectant residue, which is not conducive to miniaturization. How to realize miniaturization, reliable disinfection and purification, ensure water quality safety and adapt to the water supply device of life community still needs better and more solutions. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a small scale water supply area underground water source water supply disinfection system, which has the water supply capacity suitable for community, miniaturization and water supply device ensuring water quality safety.

[0004] In order to achieve the above object, the technical scheme of the utility model is: a small-scale water supply area underground water source sodium hypochlorite disinfection system, including deep well pump 10, sodium hypochlorite solvent tank 20, disinfectant pump 30, mixer 40, flowmeter 50 and residual chlorine detector 60, the deep well pump 10 is the water pump of extraction underground water source, the deep well pump 10 is connected the input of the mixer 40 through first pipeline 11, the output of the mixer is connected outlet valve 13 through second pipeline 12, outlet valve 13 is connected outlet pipeline 14, the input interface of disinfectant pump 30 is connected sodium hypochlorite solvent tank 20, first pipeline 11 is equipped with disinfectant input interface 31 connected disinfectant pump output interface, and outlet pipeline is equipped with residual chlorine detection interface 41 connected residual chlorine detector 60.

[0005] Further, in order to adapt to the water supply of small area, the deep well pump 10 is a deep well pump with a maximum flow of 80 cubic meters / hour.

[0006] Further, a preferred medicament tank configuration is that the sodium hypochlorite solvent tank 20 includes two 300-liter sodium hypochlorite medicament tanks.

[0007] Further, in order to accurately control the amount of medicament, the disinfectant pump 30 is a digital metering pump, and the output accuracy of the disinfectant pump is 1%.

[0008] Further, a preferred mixer is that the mixer 40 is a DN200 pipeline mixer.

[0009] Further, a preferred residual chlorine detector is that the residual chlorine detector 60 is an online residual chlorine detector.

[0010] Further, in order to realize automatic control, the small-scale water supply area underground water source sodium hypochlorite disinfection system is provided with a control device 70, the control device 70 receives signals output by the flowmeter 50 and the residual chlorine detector 60, and the control device controls the output of the disinfectant pump 30.

[0011] Further, in order to meet the mixing of disinfectant and water source, a preferred pipeline arrangement is that the pipeline length between the disinfectant input interface 31 and the deep well pump 10 is not less than 1.0 meters, at least one pipeline elbow is arranged between the disinfectant input interface 31 and the deep well pump 10, the pipeline length between the disinfectant input interface 31 and the mixer 40 is not less than 2.0 meters, the pipeline length between the mixer 40 and the residual chlorine detection interface 41 is not less than 2.0 meters, and the first pipeline 11 and the second pipeline 12 are water pipes with a DN250 diameter.

[0012] Further, in order to better adapt to the environmental conditions of the water supply area, the small-scale water supply area groundwater source sodium hypochlorite disinfection system is installed in a water source workshop, and the water source workshop is a room with a size of 3.2m*4.5m.

[0013] Further, the outlet of the water outlet pipeline 14 is at a distance of not less than 10m from the water supply building.

[0014] The beneficial effects of the utility model are that: the water source treatment equipment and system configuration are reasonably configured, the effect of sodium hypochlorite disinfection of drinking water is significantly improved, the water quality safety of drinking water is ensured, the residual chlorine of drinking water is effectively controlled, the complexity of the disinfection system is reduced, the occupied area of the system is significantly compressed, and the utility model is particularly suitable for providing clean water source for a community and has outstanding practicability.

[0015] The utility model will be described in detail below in combination with the drawings and embodiments. DRAWINGS

[0016] Figure 1 It is the system diagram of the utility model;

[0017] Figure 2 It is the plane view of the utility model;

[0018] Figure 3 It is the design model diagram of the utility model. CONCRETE IMPLEMENTING METHOD

[0019] Embodiment one:

[0020] As Figure 1 , Figure 2 A community groundwater source sodium hypochlorite disinfection system, comprising a deep well pump 10, a sodium hypochlorite solvent tank 20, a disinfectant pump 30, a mixer 40, a flowmeter 50 and a residual chlorine detector 60.

[0021] The deep well pump 10 is a water pump for extracting groundwater, and the deep well pump 10 is connected to the input port of the mixer 40 through the first pipeline 11, the output port of the mixer is connected to the water outlet valve 13 through the second pipeline 12, the water outlet valve 13 is connected to the water outlet pipeline 14, the input interface of the disinfectant pump 30 is connected to the sodium hypochlorite solvent tank 20 through the disinfectant pipeline 32, and the disinfectant pipeline 32 is a hose. The first pipeline 11 is provided with a disinfectant input interface 31 connected to the disinfectant pump output interface, the water outlet pipeline is provided with a residual chlorine detection interface 41 connected to the residual chlorine detector 60, and the residual chlorine detection tube 42 between the residual chlorine detection interface 41 and the residual chlorine detector 60 is a hose.

[0022] The second pipeline 12 is connected to a drain pipe 15, and the drain pipe 15 is provided with a drain valve 16.

[0023] The embodiment takes a water supply system of a residential community in a suburb of Beijing as an example. The residential community uses an independent domestic water supply system because it is far away from the municipal water supply network. The residential community has 800 residents and the design daily water supply capacity is 300 cubic meters. The location of the community has good underground water sources. The underground water sources are clean and the sand content (floc) meets the standard for domestic water. However, the water needs to be disinfected to completely meet the standard for domestic water. The original water supply system uses ultraviolet disinfection and ordinary chlorination disinfection. However, the ultraviolet disinfection does not have a long-term disinfection effect. The water quality in the user pipeline will deteriorate for a long time. The ordinary chlorination disinfection often has problems of substandard disinfection or excessive residual chlorine. Because the water intake point is very close to the community, there is no condition to build a filter tank and other facilities to improve the chlorination disinfection. The technical scheme of the utility model is adopted to solve the above technical problems.

[0024] In the embodiment, the deep well pump 10 is a deep well pump with a maximum flow rate of 80 cubic meters / hour.

[0025] In order to facilitate the cleaning and maintenance of the disinfectant container, the sodium hypochlorite solvent tank 20 includes two 300-liter sodium hypochlorite agent tanks. The sodium hypochlorite solvent tank is loaded with a 5% sodium hypochlorite solution. The two sodium hypochlorite solvent tanks are connected by a pipeline provided with a valve.

[0026] The mixer 40 adopts a pipeline mixer with a nominal diameter DN200. The length of the mixer is 940 mm.

[0027] The disinfectant pump 30 adopts a Grundfos DDA-7.5-16-PVC digital metering pump. The accuracy of the Grundfos digital metering pump can reach ±1%.

[0028] The residual chlorine detector 60 is an online residual chlorine detector that can detect the chlorine content in the water in real time.

[0029] In the connection structure of the device, the pipeline length D1 between the disinfectant input interface 31 and the deep well pump 10 is 1.0 meter. A pipeline bend (not including the bend of the deep well pump output) is provided between the disinfectant input interface 31 and the deep well pump 10. Through the pipeline and the bend, the turbulent flow of the water outlet of the deep well pump can be slowed down to avoid adverse effects on the accurate addition of disinfectant.

[0030] The pipeline length (D2+D3) between the disinfectant input interface 31 and the mixer 40 is not less than 2.0 meters, so that the disinfectant (sodium hypochlorite) is preliminarily mixed with water in the pipeline. The pipeline length D4 between the mixer 40 and the residual chlorine detection interface 41 is not less than 2.0 meters, so that the water flow maintains a relatively normal flow rate and flow state to facilitate the metering detection of the flow meter and the sampling of the residual chlorine detection interface 41.

[0031] The first pipe 11 and the second pipe 12 are water pipes with a DN250 nominal diameter, which can meet the water supply and keep the water in the pipes at a proper flow rate.

[0032] The control device 70 receives signals from the flow meter 50 and the residual chlorine detector 60 and controls the output of the disinfectant pump 30. In the control method of the present embodiment, the basic amount of sodium hypochlorite solution (5% concentration) is added at a rate of 1.0 milliliter per liter of water. The control system adjusts the basic amount of sodium hypochlorite according to the flow detected by the flow meter 50. Furthermore, the disinfection effect of sodium hypochlorite and the residual chlorine can change with possible changes in water quality, so the control system also adjusts the amount of sodium hypochlorite solution added according to the chlorine content detected by the residual chlorine detector 60. According to actual detection of the output water quality, the chlorine residual amount of the final output drinking water can be effectively controlled at 0.01 milligrams per liter in the water quality detection of the water sampled within 10 meters from the outlet of the water outlet pipe 14 in the present embodiment, which meets the requirements of the reference water quality. Therefore, it can be considered that the water source disinfection system of the present embodiment can have a distance of no less than 10 meters from the water supply building at the outlet of the water outlet pipe 14. In the actual application of the present embodiment, the distance between the water supply point and the nearest water user is 40 meters.

[0033] The control device of the present embodiment realizes unattended automatic control.

[0034] The cell underground water source sodium hypochlorite disinfection system of the present embodiment is installed in the water source workshop 80. In the present embodiment, the pipe from the deep well pump outlet adopts a U-shaped structure, which can reuse the effective area of the water source workshop. The water source workshop is a room with a size of 3.2 meters x 4.5 meters, which significantly saves the construction land area compared with general cell independent water supply devices.

Claims

1. A small-scale water supply area groundwater source sodium hypochlorite disinfection system comprising a deep well pump (10), a sodium hypochlorite solvent tank (20), a disinfectant pump (30), a mixer (40), a flow meter (50), and a residual chlorine detector (60), characterized in that, The deep well pump (10) is a water pump for pumping groundwater, the deep well pump (10) is connected to the input of the mixer (40) through the first pipeline (11), the output of the mixer is connected to the water outlet valve (13) through the second pipeline (12), the water outlet valve (13) is connected to the water outlet pipeline (14), the input interface of the disinfectant pump (30) is connected to the sodium hypochlorite solvent tank (20), the first pipeline (11) is provided with a disinfectant input interface (31) connected to the disinfectant pump output interface, and the water outlet pipeline is provided with a residual chlorine detection interface (41) connected to the residual chlorine detector (60).

2. A small scale water supply area groundwater source sodium hypochlorite disinfection system as claimed in claim 1, wherein, The deep well pump (10) is a deep well pump with a maximum flow rate of 80 cubic meters / hour.

3. A small scale water supply area groundwater source sodium hypochlorite disinfection system according to claim 1, wherein, The sodium hypochlorite solvent tank (20) includes two 300-liter sodium hypochlorite medicine tanks.

4. A small scale water supply area groundwater source sodium hypochlorite disinfection system according to claim 1, wherein, The disinfectant pump (30) is a digital metering pump, and the output accuracy of the disinfectant pump is 1%.

5. A small scale water supply area groundwater source sodium hypochlorite disinfection system according to claim 1, wherein, The mixer (40) is a DN200 pipeline mixer.

6. A small scale water supply area groundwater source sodium hypochlorite disinfection system according to claim 1, wherein, The residual chlorine detector (60) is an online residual chlorine detector.

7. A small scale water supply area groundwater source sodium hypochlorite disinfection system according to claim 1, wherein, The small-scale water supply area groundwater source sodium hypochlorite disinfection system is provided with a control device (70), the control device (70) receives signals output by the flow meter (50) and the residual chlorine detector (60), and the control device controls the output of the disinfectant pump (30).

8. A small scale water supply area groundwater source sodium hypochlorite disinfection system according to claim 1, wherein, The length of the pipeline between the disinfectant input interface (31) and the deep well pump (10) is not less than 1.0 meters, at least one pipeline elbow is arranged between the disinfectant input interface (31) and the deep well pump (10), the length of the pipeline between the disinfectant input interface (31) and the mixer (40) is not less than 2.0 meters, the length of the pipeline between the mixer (40) and the residual chlorine detection interface (41) is not less than 2.0 meters, and the first pipeline (11) and the second pipeline (12) are water pipes with a DN250 diameter.

9. A small scale water supply area groundwater source sodium hypochlorite disinfection system according to claim 1, wherein, The small-scale water supply area groundwater source sodium hypochlorite disinfection system is installed in a water source workroom, and the water source workroom is a room with a size of 3.2m*4.5m.

10. The small-scale water supply area groundwater source sodium hypochlorite disinfection system according to claim 1, wherein the outlet of the water outlet pipeline (14) is located at a distance of not less than 10 meters from a water supply building.

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