Pretreatment device for water treatment

Abstract

The utility model relates to a pretreatment device for water treatment, which comprises a water inlet pipe for inputting raw water and a water outlet pipe for outputting pretreated water, the water inlet pipe is connected with the water outlet pipe through an overrunning pipe provided with an overrunning valve, and meanwhile, the water inlet pipe is connected with at least two pretreatment tanks which are arranged in series through a water conduit. The pretreatment tank located at the tail end is connected with the water outlet pipe through a water production pipe, a water outlet of the pretreatment tank is connected with the water guide pipe of the next pretreatment tank through a water production pipe, and each pretreatment tank is connected with the surpassing pipe through a water guide pipe. According to the utility model, a plurality of sets of pretreatment tanks are connected in series for operation, so that various different pollutants can be pretreated and removed; if the water quality of the raw water reaches the standard, the raw water directly enters a deep treatment section through a surpassing pipeline without pretreatment; according to the device and the system, the existing pretreatment problem of raw water can be solved, and an effective guarantee is provided for subsequent deep treatment.

Description

Technical Field

[0001] The utility model belongs to the technical field of water treatment equipment, in particular to a pretreatment device for water treatment. Background Art

[0002] In the field of sewage treatment, it is necessary to pre-treat large inorganic matter (suspended or floating particles), inorganic gravel, floating oil, emulsified oil, etc. in the raw water to avoid affecting the subsequent biochemical treatment stage's water purification function. In the field of water purification, the water source is usually a natural water source such as a river, lake or reservoir. The water source may have excessive microorganisms such as E. coli, and excessive physical and chemical indicators such as turbidity, nitrate, iron, manganese, organic matter, hardness, etc. Therefore, any type of water treatment requires pre-treatment before deep treatment to ensure the safety of drinking water. Deep treatment and pre-treatment are important water treatment steps.

[0003] At present, a set of large-scale water treatment equipment in the prior art usually includes open-air equipment or tanks such as sedimentation tanks, filtration tanks, and degradation tanks, and each water treatment equipment is connected in series in sequence, occupying a large area. At the same time, when the pretreatment enters the last open-air tank, it will continue to be affected by the external environment on the water body. There is a risk that the waste pretreated in the previous steps will enter the water body again, affecting the subsequent deep treatment. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pretreatment device for water treatment, which does not require open-air equipment or a pool body, and can quickly change the pretreatment mode according to the change of raw water quality, improve the pretreatment effect, and ensure the normal operation of subsequent process sections.

[0005] The utility model solves the technical problem by adopting the following technical scheme: a pretreatment device for water treatment is provided, comprising an inlet pipe for inputting raw water and an outlet pipe for outputting pretreated water, the inlet pipe and the outlet pipe are connected by an override pipe provided with an override valve, and at the same time, the inlet pipe is connected to at least two pretreatment tanks arranged in series through a water guide pipe, the pretreatment tank at the end is connected to the outlet pipe through a water production pipe, the water outlet of the pretreatment tank is connected to the inlet pipe of the next pretreatment tank through a water production pipe, the water guide pipe is provided with an inlet valve, the water production pipe is provided with a water production valve, each of the pretreatment tanks is connected to the override pipe through a water guide pipe, two packing screens are hung in the pretreatment tank, a packing device with packing inside is filled between the two packing screens, holes are provided on the surfaces of the packing screens and the packing device for passing the water to be treated, and the holes on the packing screens are smaller than the outer dimensions of the packing device.

[0006] A water inlet connected to the water diversion pipe is provided on one side of the pretreatment tank, and a water outlet of the water diversion pipe passes through the filler screen and penetrates into the bottom of the pretreatment tank. A water collecting pipe is provided at the upper end of the filler screen in the pretreatment tank, and an opening is provided below the water collecting pipe. One end of the water collecting pipe passes through the pretreatment tank and is connected to the water production pipe.

[0007] A filler adding port and an inspection port are provided on the tank wall of the pretreatment tank and between the two filler screens.

[0008] The materials of the pretreatment tank, the packing screen and the packing device are all food grade 304 stainless steel or 316L stainless steel.

[0009] The filler in the filler device is an organic matter adsorption filler, an iron and manganese degradation filler or a water purification filler.

[0010] The pretreatment tank is connected to the backwash system.

[0011] Beneficial Effects

[0012] Compared with the prior art, the utility model has the following beneficial effects: 1. If the device is used in the drinking water industry, all materials in the system device are made of food-grade 304 stainless steel, which is friendly to water production and the environment; 2. The filler device in the system can use different types of fillers according to the different raw water qualities; 3. The device realizes the functions of water intake, water production, backwashing, and sewage discharge through different valve switching; 4. Multiple sets of series operation can achieve the effect of removing multiple pollutants; 5. If the raw water quality meets the standard, no pretreatment is required, and it can directly enter the deep treatment section through the transcending pipeline; 6. The device adopts a closed tank type, which can reduce the impact of the external environment on the water quality compared with open-air equipment or pools. Through this device and system, the existing problem of pretreatment of raw water can be solved, providing effective guarantee for subsequent deep treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 The present invention is a system diagram of a pretreatment device for water treatment.

[0014] Figure 2 for Figure 1 Schematic diagram of the structure of the pretreatment tank.

[0015] Figure 3 for Figure 2 Enlarged view of the medium filler screen.

[0016] Figure 4 for Figure 2 Enlarged view of the medium packing device.

[0017] Among them, 1-the first pretreatment tank; 2: the second pretreatment tank; 3: the third pretreatment tank; 4: the backwash pipe; 5: the water inlet pipe; 6: the override pipe; 7: the water outlet pipe; 8: the packing device; 9: the packing screen; 10: the water collecting pipe; 11: the water diversion pipe; 101: the first water inlet valve; 102: the first water production valve; 103: the first backwash valve; 104: the first sewage valve; 201: the second water inlet valve; 202: the second water production valve; 203: the second backwash valve; 204: the second sewage valve; 301: the third water inlet valve; 302: the third water production valve; 303: the third backwash valve; 304: the third sewage valve; 111: the first inspection port; 112: the first packing addition port; 211: the second inspection port; 212: the second packing addition port; 311: the third inspection port; 312: the third packing addition port; 401: the override valve.

[0018] The same reference numerals in the various drawings represent the same components. DETAILED DESCRIPTION

[0019] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Furthermore, in the description of the present invention, unless otherwise specified, “plurality”, “multiple roots”, and “multiple groups” mean two or more.

[0022] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

[0023] The utility model provides a pretreatment device for water treatment, comprising a water inlet pipe 5 for inputting raw water and a water outlet pipe 7 for outputting pretreated water, the water inlet pipe 5 and the water outlet pipe 7 are connected by an override pipe 6 provided with an override valve 401, and at the same time, the water inlet pipe 5 is connected to at least two pretreatment tanks arranged in series through a water guide pipe 11, the water outlet of the pretreatment tank is connected to the water guide pipe 11 of the next pretreatment tank through a water production pipe, the pretreatment tank at the end is connected to the water outlet pipe 7 through a water production pipe, the water guide pipe 11 is provided with a water inlet valve, the water production pipe is provided with a water production valve, each of the pretreatment tanks is connected to the override pipe 6 through the water guide pipe 11, two stuffing screens 9 are hung in the pretreatment tank, a stuffing device 8 with stuffing inside is filled between the two stuffing screens 9, and holes are provided on the surfaces of the stuffing screens 9 and the stuffing device 8 for passing water to be treated.

[0024] like Figure 1 As shown, in a specific embodiment, the pretreatment tank includes a first pretreatment tank 1, a second pretreatment tank 2 and a third pretreatment tank 3 connected in series, the first pretreatment tank 1 is connected to the bypass pipe 6 or directly to the water inlet pipe 5 through a water diversion pipe 11 provided with a first water inlet valve 101, and is connected to the second pretreatment tank 2 through a water production pipe provided with a first water production valve 102; the second pretreatment tank 2 is connected to the bypass pipe 6 through a water diversion pipe 11 provided with a second water inlet valve 201, and is connected to the third pretreatment tank 3 through a water production pipe provided with a second water production valve 202; the third pretreatment tank 3 is connected to the bypass pipe 6 through a water diversion pipe 11 provided with a third water inlet valve 301, and is directly connected to the water outlet pipe 7 through a water production pipe provided with a third water production valve 302. The bypass valve 401 is provided at the end of the bypass pipe 6.

[0025] like Figure 2 As shown, one side of the pretreatment tank is provided with a water inlet connected to the water diversion pipe 11, the water outlet of the water diversion pipe 11 passes through the stuffing screen 9 and penetrates into the bottom of the pretreatment tank, the pretreatment tank is provided with a water collecting pipe 10 at the upper end of the stuffing screen 9, and a water collecting hole is provided below the water collecting pipe 10. The water pretreated by the stuffing in the stuffing device 8 flows upward through the water collecting hole into the water collecting pipe 10, and one end of the water collecting pipe 10 passes through the pretreatment tank and is connected to the water production pipe.

[0026] In a specific embodiment, taking the first pretreatment tank 1 as an example, the stuffing screen 9 is of a detachable type and is fixed in the first pretreatment tank 1 by bolts. A first stuffing addition port 112 and a first inspection port 111 are provided on the tank wall of the first pretreatment tank 1 and between the two stuffing screens 9. During the initial installation, the stuffing device 8 can be added to the pretreatment tank through the first stuffing addition port 112; when the stuffing needs to be replaced or overhauled, all the stuffing devices 8 stored in the memory can be quickly removed through the first inspection port 111 at the bottom of the pretreatment tank for overhaul or replacement. The second pretreatment tank 2 and the third pretreatment tank 3 are of the same form as the first pretreatment tank 1 and will not be described in detail here.

[0027] In a specific embodiment, the pretreatment tank is used for drinking water projects. To ensure the safety of drinking water, the pretreatment tank, filler screen 9, filler device 8 and connecting pipes are all made of food grade 304 stainless steel. In another specific embodiment, when an ozone delivery device is added to the entire process section, the material of the above components is 316L stainless steel.

[0028] like Figure 3 , 4 As shown, a packing device 8 filled with the same kind of filler is usually placed in a single pretreatment tank. The packing device 8 is spherical as a whole, and is assembled by two hemispheres with water-passing pores on the surface, and different fillers can be filled inside. Depending on the quality of the raw water to be treated, the filler in the packing device 8 is an organic adsorption filler, an iron and manganese degradation filler, a water purification filler, or other fillers set according to the needs of the pretreatment process. The size of the water-passing pores of the packing device 8 should be smaller than the size of the internal filler, and the holes on the packing screen 9 are smaller than the outer dimensions of the packing device 8. In addition to purifying the incoming water, the packing device 8 can also increase the disturbance of the incoming water, increase the contact area between the filler and the incoming water, and purify the incoming water more effectively.

[0029] The pretreatment tank is connected to the backwash system. When the device of the utility model has been running for a period of time and the packing does not need to be directly replaced, the internal packing can be backwashed by the backwash system. Taking the first pretreatment tank 1 as an example, the backwash pipe 4 is connected to the water production pipe of the first pretreatment tank 1. When backwashing, the first water inlet valve 101 and the first water production valve 102 are first closed, and then the first backwash valve 103 on the branch backwash pipe 4 is opened. The rear-end clean water is used to evenly backwash the pretreatment tank and the packing device 8 inside it through the water collecting pipe 10. The sewage after backwashing is discharged through the first sewage valve 104 provided at the bottom of the first pretreatment tank 1, and then the subsequent second pretreatment tank 2 and the third pretreatment tank 3 can be backwashed in the same way simultaneously or sequentially.

[0030] In specific use, when multiple sets of the pretreatment system of the utility model are operated in series, the raw water enters the pretreatment tank through the water inlet valve, enters the bottom of the pretreatment tank through the internal water inlet pipe 5, passes through the filling area from bottom to top, and enters the next pretreatment tank for further treatment after being collected by the water collecting pipe 10. After being treated in the pretreatment tank, it enters the deep treatment section and finally enters the pipe network or water supply system for external discharge or use.

[0031] Multiple sets of pretreatment tanks of the utility model can also be operated in parallel. When the water quality changes seasonally or periodically, and one or more indicators are within the standard, the designated water inlet valve can be opened to skip some pretreatment tanks that do not need to be processed and directly enter the pretreatment tank for the next step of pretreatment; when all indicators are within the standard, the bypass valve 401 can be opened to directly enter the subsequent treatment section for treatment through the bypass pipe 6 and the outlet pipe 7.

Claims

1. A pretreatment device for water treatment, comprising an inlet pipe for inputting raw water and an outlet pipe for outputting pretreated water, characterized in that: The water inlet pipe and the water outlet pipe are connected by an override pipe provided with an override valve. At the same time, the water inlet pipe is connected to at least two pretreatment tanks arranged in series through a water diversion pipe. The pretreatment tank at the end is connected to the water outlet pipe through a water production pipe. The water outlet of the pretreatment tank is connected to the water diversion pipe of the next pretreatment tank through a water production pipe. The water diversion pipe is provided with a water inlet valve, and the water production pipe is provided with a water production valve. Each of the pretreatment tanks is connected to the override pipe through a water diversion pipe. Two stuffing nets are hung in the pretreatment tank. A stuffing device with stuffing inside is filled between the two stuffing nets. Holes are provided on the surfaces of the stuffing nets and the stuffing device for passing the water to be treated, and the holes on the stuffing nets are smaller than the outer dimensions of the stuffing device.

2. A pretreatment device for water treatment according to claim 1, characterized in that: A water inlet connected to the water diversion pipe is provided on one side of the pretreatment tank, and a water outlet of the water diversion pipe passes through the filler screen and penetrates into the bottom of the pretreatment tank. A water collecting pipe is provided at the upper end of the filler screen in the pretreatment tank, and an opening is provided below the water collecting pipe. One end of the water collecting pipe passes through the pretreatment tank and is connected to the water production pipe.

3. A pretreatment device for water treatment according to claim 1, characterized in that: A filler adding port and an inspection port are provided on the tank wall of the pretreatment tank and between the two filler screens.

4. A pretreatment device for water treatment according to claim 1, characterized in that: The materials of the pretreatment tank, the packing screen and the packing device are all food grade 304 stainless steel or 316L stainless steel.

5. A pretreatment device for water treatment according to claim 1, characterized in that: The filler in the filler device is an organic matter adsorption filler, an iron and manganese degradation filler or a water purification filler.

6. A pretreatment device for water treatment according to claim 1, characterized in that: The pretreatment tank is connected to the backwash system.

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