Village and town water supply treatment device and water supply system

Abstract

The utility model relates to a rural water supply treatment device and a water supply system. The village and town water supply treatment device comprises a pore chamber rotational flow flocculation tank, an inclined tube sedimentation tank, a valveless filter tank and a sludge water treatment module, wherein a first water outlet of the pore chamber rotational flow flocculation tank is connected with the inclined tube sedimentation tank; a first water outlet of the inclined tube sedimentation tank is connected with the valveless filter tank; water is discharged from a first water outlet of the valveless filter tank; each of the pore chamber rotational flow flocculation basin, the inclined tube sedimentation basin and the valveless filter tank comprises a second outlet used for sludge water discharge, the second outlets of the pore chamber rotational flow flocculation basin, the inclined tube sedimentation basin and the valveless filter tank are connected with the sludge water treatment module, and the first outlet of the sludge water treatment module is connected with the pore chamber rotational flow flocculation basin to form a cycle. Compared with the prior art, the sludge water treatment module is used for treating and recycling sludge water at the second outlets of the pore chamber rotational flow flocculation basin, the inclined tube sedimentation basin and the valveless filter tank, so that water resources are saved.

Description

Technical Field

[0001] The utility model relates to the technical field of water supply systems, and in particular to a village and town water supply treatment device and a water supply system. Background Art

[0002] Water supply in rural my country generally comes from mountain streams, offering excellent water quality. However, the scale of water supply is relatively small. Rural areas typically have a population of approximately 100-4,000, with daily water consumption ranging from 30-300 tons, and a maximum of no more than 500 tons. Townships typically have a population of approximately 5,000-15,000, with daily water consumption ranging from 1,000-3,000 tons. Rural water use is highly variable, with peak usage concentrated in the morning, midday, and evening, with peak usage typically occurring between 4 and 8 PM. Water is primarily used for cooking and bathing.

[0003] Rural settlements are typically small, with one water supply station typically built for every one or two villages. These stations are numerous, remotely located, and dispersed, resulting in decentralized water supply. Water sources include groundwater, surface water, reservoir water, mountain spring water, and rainwater. Exceeding standards typically include microorganisms, turbidity, iron ions, manganese ions, hardness, and chlorides. Common water quality issues include significant fluctuations in water quality and increases in turbidity during natural disasters such as rainstorms, floods, and typhoons. Outlet turbidity typically ranges from 1 to 3 NTU (Nephelometric Turbidity Unit, an internationally recognized unit of turbidity measurement) and can exceed 10 NTU in exceptional cases. Reservoir water sources are subject to eutrophication and algae growth, leading to foul odors in the summer and difficulties in ensuring microbial safety.

[0004] Safe and stable water supply for villages and towns is particularly important, but the water purification facilities in individual villages are simple and generally produce a large amount of wastewater, wasting water resources. Summary of the Invention

[0005] The technical problem to be solved by the utility model is that the water purification facilities in a single village are simple and generally produce a large amount of wastewater, wasting water resources.

[0006] In order to solve the above technical problems, according to one aspect of the present invention, a village water supply treatment device is provided, comprising a vortex chamber cyclone flocculation tank, an inclined tube sedimentation tank, a valveless filter tank and a sludge water treatment module.

[0007] The first water outlet of the pore chamber cyclone flocculation tank is connected to the inclined tube sedimentation tank;

[0008] The first water outlet of the inclined tube sedimentation tank is connected to the valveless filter;

[0009] The first water outlet of the valveless filter tank discharges water;

[0010] The pore chamber cyclone flocculation tank, inclined tube sedimentation tank and valveless filter all include a second outlet for discharging mud water. The second outlets of the pore chamber cyclone flocculation tank, inclined tube sedimentation tank and valveless filter are connected to the mud water treatment module, and the first outlet of the mud water treatment module is connected to the pore chamber cyclone flocculation tank to form a cycle.

[0011] Among them, the pore chamber cyclone flocculation tank is mainly used to carry out flocculation reaction to remove suspended matter and body matter in the water; the inclined tube sedimentation tank is mainly used to precipitate the flocs produced by the pore chamber cyclone flocculation tank; the valveless filter is mainly used to filter suspended matter in the water; the mud water treatment module is mainly used to treat the mud water to separate the water and mud.

[0012] Preferably, the sludge water treatment module includes a sludge tank, a sludge drying field and a drainage tank. The second outlet of the pore chamber cyclone flocculation tank and the inclined tube sedimentation tank is connected to the sludge tank, the outlet of the sludge tank is connected to the sludge drying field, the water outlet of the sludge drying field and the second outlet of the valveless filter are connected to the drainage tank, the water outlet of the drainage tank is connected to the pore chamber cyclone flocculation tank, and the mud outlet of the drainage tank is connected to the sludge drying field.

[0013] Preferably, the mud drainage pool and the water drainage pool are combined into a comprehensive mud drainage pool.

[0014] Preferably, the comprehensive sludge drainage pool is buried, and the sludge drying field is located on the top of the comprehensive sludge drainage pool.

[0015] Preferably, the sludge drying field comprises an infiltration drainage system, which is divided into two layers, an upper layer of coarse sand or slag or fly ash, and a lower layer of gravel.

[0016] Preferably, the pore chamber cyclone flocculation tank adopts a bucket bottom structure.

[0017] Preferably, the inclined tube sedimentation tank adopts a bucket bottom structure.

[0018] Preferably, the valveless filter uses a double-layer filter material, the upper layer is crushed carbon, and the lower layer is quartz sand.

[0019] Preferably, the village water supply treatment device further includes a water distribution well, the water outlet of the water distribution well is connected to the pore chamber cyclone flocculation tank, and the first outlet of the muddy water treatment module is connected to the water distribution well.

[0020] According to another aspect of the present invention, a village water supply system is provided, comprising the above-mentioned village water supply treatment device.

[0021] Compared with the prior art, the technical solution provided by the embodiments of the present invention can achieve at least the following beneficial effects:

[0022] First, the sludge water treatment module treats and recycles the sludge water from the second outlet of the pore chamber cyclone flocculation tank, the inclined tube sedimentation tank and the valveless filter, thereby saving water resources.

[0023] Second, the processing device has a simple structure, low technical difficulty and is easy to construct.

[0024] Third, the processing scale of the water purification plant can be increased or decreased by adjusting the number of integrated water purification equipment in parallel. During operation, the number of equipment can also be put into operation according to actual demand, effectively reducing energy consumption.

[0025] Fourth, the village water supply system also includes ancillary production buildings, and the dosing room and the chlorination room are built together into a one-story frame structure to facilitate centralized management. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present invention, rather than limiting the present invention.

[0027] Figure 1 This is a structural block diagram of a village water supply treatment device provided in Example 1;

[0028] Figure 2 for Figure 1 A process flow chart of the device;

[0029] Figure 3 This is a structural block diagram of a village water supply treatment device provided in this embodiment 2. DETAILED DESCRIPTION

[0030] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meanings understood by persons of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar expressions used in the specification and claims of this utility model patent application do not denote any order, quantity, or importance, but are merely used to distinguish different components. Similarly, terms such as "a" or "an" do not denote a limitation on quantity, but rather indicate the presence of at least one.

[0032] Example 1

[0033] refer to Figure 1 and Figure 2 This embodiment provides a village water supply system, including a village water supply treatment device, wherein the treatment device includes a pore chamber cyclone flocculation tank 1, an inclined tube sedimentation tank 2, a valveless filter 3 and a sludge water treatment module 4.

[0034] The water inlet of the pore cyclone flocculation tank 1 is connected to the raw water. The pore cyclone flocculation tank 1 is mainly used to perform flocculation reaction to remove suspended matter and body matter in the raw water. In this embodiment, the scale of the pore cyclone flocculation tank 1 is set according to the daily water consumption of rural areas and towns. 3 / d. The porous cyclone flocculation tank 1 is constructed, and its specific structure is divided into two grids, each grid is provided with 10 grids, the plane size of each grid is 1.0m*1.0m, and the vertical shaft flow rate is 0.05m / s. The first grid is provided with a mixer (reference specifications of the mixer: diameter 400mm, rotation speed 100r / min, power 2.2kW), which serves as a mixing zone. The velocity gradient is 500s-1, and flocculant and sodium hypochlorite are added and mixed. The second grid is a flocculation zone divided into three sections, and the flocculation time is 27.3min. The first section is provided with three layers of dense grids (opening ratio of 25%); the second section is provided with two layers of sparse grids (opening ratio of 36%), with a hole size of 0.15~0.20m; the third section is provided with one layer of sparse grids (opening ratio of 36%). The chamber cyclone flocculation tank 1 adopts a bucket bottom structure, and a second outlet is set at the bottom of the tank for discharging mud water. The mud water here is wastewater generated by the flocculation reaction. The mud water is discharged by using a hydraulically driven 2-position 4-way solenoid valve to control the mud discharge valve to discharge the mud water.

[0035] The first outlet of the pore chamber cyclone flocculation tank 1 is connected to the inclined tube sedimentation tank 2, which is mainly used to precipitate the flocs produced by the pore chamber cyclone flocculation tank. In this embodiment, the inclined tube sedimentation tank 2 is preferably used to precipitate the flocs produced by the pore chamber cyclone flocculation tank 1. In this embodiment, the scale of the inclined tube sedimentation tank 2 is preferably 4500m 3 / d, build a two-cell, each cell is 4.2m*4.6m, effective water depth is 4.57m, liquid level load is 8.1m 3 / (h·m2), the inclined tube adopts a honeycomb inclined tube with a length of 1000mm and a diameter of 30mm, and the installation angle is 60°. The protection height of the clean water area is 1.2m, and the bottom water distribution area is 2.0m high. The inclined tube sedimentation tank 2 uses three perforated water collection troughs with a width of 0.25m to collect water. The inclined tube inclined tube sedimentation tank 2 adopts a bucket bottom structure, and a second outlet is also set at the bottom of the tank for discharging muddy water. The muddy water is wastewater, and the muddy water is discharged by using a hydraulically driven 2-position 4-way solenoid valve to control the mud discharge valve for discharging muddy water.

[0036] The first outlet of the inclined tube sedimentation tank 2 is connected to the valveless filter 3, which is mainly used to filter suspended matter in the water. In this embodiment, the scale of the valveless filter 3 is preferably 4500m 3 / d, build one, divided into two compartments. The designed inlet turbidity is less than 15mg / L, the outlet turbidity is less than 1.0mg / L, the filtration rate is 7.3m / h, the backwash intensity is 15L / (s·m2), and the flushing time is 5min. The filter tank adopts a new type of secondary water and air distribution perforated pipe, and a double-layer filter material is used to add ozone and activated carbon. The upper layer is 8*30 mesh columnar crushed carbon with a thickness of 2.1m; the lower layer is quartz sand with d10=0.6mm, an unevenness coefficient of 1.3, and a thickness of 0.6m. A second outlet is also provided at the bottom of the valveless filter tank 3 for discharging muddy water, and the muddy water is the filter tank backwash water.

[0037] The second outlets of the pore cyclone flocculation tank 1, the inclined tube sedimentation tank 2 and the valveless filter 3 are connected to the sludge water treatment module 4, and the first outlet of the sludge water treatment module 4 is connected to the pore cyclone flocculation tank 1, forming a cycle. The sludge water treatment module 4 mainly processes the muddy water to separate the water and mud. Specifically, the sludge water treatment module 4 includes a sludge tank 41, a sludge drying field 42 and a drainage tank 43. The second outlets of the pore cyclone flocculation tank 1 and the inclined tube sedimentation tank 2 are connected to the sludge tank 41, the outlet of the sludge tank 41 is connected to the sludge drying field 43, the water outlet of the sludge drying field 42 and the second outlet of the valveless filter 3 are connected to the drainage tank 43, the water outlet of the drainage tank 43 is connected to the pore cyclone flocculation tank 1, and the mud outlet of the drainage tank 43 is connected to the sludge drying field 42.

[0038] Due to the small scale and volume of sludge discharged by village and town water supply plants, in order to conserve investment and reduce idle equipment waste, separate thickening tanks and dehydrators are not installed. Instead, the sludge discharge tank 41 and the drainage tank 43 are combined into a comprehensive sludge discharge tank. This comprehensive sludge discharge tank is buried underground, and the sludge drying field 42 is located on top of the comprehensive sludge discharge tank. The width of the sludge drying field 42 is the same as that of the comprehensive sludge discharge tank to facilitate construction. Manholes for flow propellers and water pumps are also reserved to facilitate maintenance by operation and maintenance personnel. Preferably, both the sludge discharge tank 41 and the drainage tank 43 are located in one unit.

[0039] In this embodiment, the sludge discharge tank 41 is preferably a rectangular tank, which is connected to the second outlet of the pore chamber cyclone flocculation tank 1 and the second outlet of the inclined tube sedimentation tank 2, respectively, to receive the sludge water produced by the two; the sludge discharge tank 41 is also connected to the sludge drying tank 42, and the sludge water is transported to the sludge drying tank 42 for treatment. The effective volume of the sludge discharge tank 41 is 48m 3Two mud pumps (one for use and one for backup) are set in the mud pool 41 to homogenize the mud water. The performance parameters of the mud pump are preferably: flow rate 15m 3 / h, lift 10m, power 1.1kW.

[0040] In this embodiment, the drainage pool 43 is preferably also a rectangular pool, which is consistent with the size of the drainage pool 41, so that the overall structure of the combined pool is regular. The effective volume of the drainage pool 43 is the same as that of the mud drainage pool 41. The drainage pool 43 is provided with an inlet wall and an outlet wall. The inlet wall rectify the incoming water, which is conducive to the sedimentation of sediment. The outlet wall has staggered openings at the bottom, and the holes are opened at the bottom of the low water level to let in water. The outlet wall at the high water level is equivalent to an overflow weir. The upper clean water flows in from the top, effectively preventing sediment from entering the drainage pump of the drainage pool 43. The drainage pool 43 adopts a bucket bottom structure, and a hydraulically driven 2-position 4-way solenoid valve is used to control the mud discharge valve at the bottom of the pool to discharge mud and water. The performance parameters of the mud discharge pump are the same as those of the mud drainage pool 41.

[0041] In this embodiment, the preferred sludge drying yard 42 is designed to concentrate and dry sludge, reducing sludge volume and transport costs. Specifically, the sludge drying yard 42 is located in a two-compartment structure to ensure continuous sludge concentration and drying. It includes a sludge distribution trough and a percolation drainage system. The sludge distribution trough has a bottom slope of 0.02, with steel gates used to rotate the compartments. The sludge discharge height does not exceed 0.6m, with an overheight of 0.3m. The percolation drainage system consists of two layers: an upper layer of coarse sand, slag, or fly ash with a particle size of 1-5mm and a thickness of 150mm; and a lower layer of gravel with a particle size of 10-30mm and a thickness of 250mm. A drainage pipe is installed beneath the percolation layer. The pipe uses a 100mm diameter perforated UPVC pipe (UPVC is a plastic pipe made of polyvinyl chloride (PVC) resin and does not contain plasticizers) to remove leachate, which is then discharged into the drainage tank 43. The sludge is concentrated, dehydrated and reduced in volume in the sludge drying yard 42 to form a sludge cake, which is then transported to a township sewage treatment plant for treatment.

[0042] The process flow of the village water supply treatment device is as follows:

[0043] Raw water enters the pore chamber cyclone flocculation tank 1, flocculant and sodium hypochlorite are added to the pore chamber cyclone flocculation tank 1 to perform flocculation reaction, the water after flocculation reaction enters the inclined tube sedimentation tank 2, and the sludge water at the bottom of the pore chamber cyclone flocculation tank 1 enters the sludge discharge tank 41;

[0044] The water is precipitated in the inclined tube sedimentation tank 2. After sedimentation, the muddy water at the bottom of the inclined tube sedimentation tank 2 also enters the mud drainage tank 41. The water processed by the inclined tube sedimentation tank 2 enters the valveless filter 3.

[0045] Ozone and activated carbon are added to the valveless filter 3 and backwashing is carried out. The filter backwash water is discharged into the drainage tank 43. The water treated by the valveless filter 4 is discharged from the first water outlet of the valveless filter 4 and put into use. Sodium hypochlorite is added for disinfection before use; the sludge water passes through the sludge drainage tank 41 and enters the sludge drying field 42 for treatment into mud cake and filtrate; the filtrate and the filter backwash water are also discharged into the drainage tank 43 for separation, the muddy water at the bottom enters the sludge drying field 42, and the supernatant is sent to the pore chamber cyclone flocculation tank 1 and enters the water purification process again, achieving the purpose of a circular treatment.

[0046] The disinfectant used in this process is a 0.8% sodium hypochlorite solution, with a dosage of 1 to 2 mg / L added to the vortex flocculation tank 1, and a subsequent dosage of 2 to 3 mg / L added to the water outlet of the valveless filter 4. The flocculant used in this process is PAC (polyaluminum chloride), which is added to the vortex flocculation mixing zone at a dosage of 1.5 to 20 mg / L, with a maximum dosage of 20 mg / L.

[0047] The village water supply system also includes ancillary production buildings, in which the dosing room and the chlorination room are combined into a one-story frame structure for easy centralized management.

[0048] Example 2

[0049] This embodiment adds a water distribution well 6 and a clear water tank 5 on the basis of embodiment 1. Figure 3 shown.

[0050] The water outlet of the water distribution well 6 is connected to the pore chamber cyclone flocculation tank 1 , and the first outlet of the muddy water treatment module 4 is connected to the water distribution well 6 . Raw water and recycled water enter the pore chamber cyclone flocculation tank 1 through the water distribution well 6 .

[0051] The first outlet of the valveless filter 4 is connected to the clean water tank 5 before the water is discharged. The outlet of the clean water tank 5 is connected to the water supply network. The clean water tank 5 is mainly used for disinfection and storage of water. The clean water tank 5 is set up in one room and is divided into two compartments. The size of each compartment is 24.0m*9.0m*4.05m, the effective water depth is 3.6m, and the effective volume of each compartment is 750m 3 The clean water pool 5 also serves as a disinfection pool, using sodium hypochlorite for disinfection. Because the water consumption in towns and villages varies greatly, the adjustment volume of the clean water pool 5 is considered to be 33% of the water supply scale. A diversion wall is set in the clean water pool 5, and a ventilation pipe is set on the top of the pool to prevent stagnant water from short-circuiting and affecting the water quality. In order to prevent the water temperature from rising due to direct sunlight on the top of the pool, which leads to deterioration of water quality in summer, the top of the clean water pool 5 is covered with 0.5m of soil and greenery is planted.

[0052] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the appended claims.

Claims

1. A village water supply treatment device, characterized in that: It includes a vortex flocculation tank, an inclined tube sedimentation tank, a valveless filter and a sludge water treatment module. The first water outlet of the pore chamber cyclone flocculation tank is connected to the inclined tube sedimentation tank; The first water outlet of the inclined tube sedimentation tank is connected to the valveless filter; The first water outlet of the valveless filter tank discharges water; The pore chamber cyclone flocculation tank, inclined tube sedimentation tank and valveless filter all include a second outlet for discharging mud water. The second outlets of the pore chamber cyclone flocculation tank, inclined tube sedimentation tank and valveless filter are connected to the mud water treatment module, and the first outlet of the mud water treatment module is connected to the pore chamber cyclone flocculation tank to form a cycle.

2. The village water supply treatment device according to claim 1, characterized in that: The sludge water treatment module includes a sludge tank, a sludge drying field and a drainage tank. The second outlets of the pore chamber cyclone flocculation tank and the inclined tube sedimentation tank are connected to the sludge tank, and the outlet of the sludge tank is connected to the sludge drying field. The water outlet of the sludge drying field and the second outlet of the valveless filter are connected to the drainage tank, the water outlet of the drainage tank is connected to the pore chamber cyclone flocculation tank, and the mud outlet of the drainage tank is connected to the sludge drying field.

3. The village water supply treatment device according to claim 2, characterized in that: The mud discharge pool and the water discharge pool are built together as a comprehensive mud discharge pool.

4. The village water supply treatment device according to claim 3, characterized in that: The comprehensive sludge discharge pool is buried, and the sludge drying field is arranged on the top of the comprehensive sludge discharge pool.

5. The village water supply treatment device according to claim 2, characterized in that: The sludge drying field includes an infiltration drainage system, which is divided into two layers, an upper layer of coarse sand or slag or fly ash, and a lower layer of gravel.

6. The village water supply treatment device according to claim 1, characterized in that: The pore chamber cyclone flocculation tank adopts a bucket bottom structure.

7. The village water supply treatment device according to claim 1, characterized in that: The inclined tube sedimentation tank adopts a bucket bottom structure.

8. The village water supply treatment device according to claim 1, characterized in that: The valveless filter tank adopts double-layer filter material, the upper layer is crushed carbon, and the lower layer is quartz sand.

9. The village water supply treatment device according to claim 1, characterized in that: It also includes a water distribution well, the water outlet of the water distribution well is connected to the pore chamber cyclone flocculation tank, and the first outlet of the muddy water treatment module is connected to the water distribution well.

10. A village water supply system, characterized in that: It comprises the village and town water supply treatment device as described in any one of claims 1 to 9.

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