CN214244029U - Water quality treatment system for surface water recharging - Google Patents
Water quality treatment system for surface water recharging Download PDFInfo
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- CN214244029U CN214244029U CN202023116778.9U CN202023116778U CN214244029U CN 214244029 U CN214244029 U CN 214244029U CN 202023116778 U CN202023116778 U CN 202023116778U CN 214244029 U CN214244029 U CN 214244029U
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Abstract
The utility model discloses a water quality treatment system for surface water recharging, which consists of 3 modules, namely a coagulating sedimentation module, a tubular micro-filtration membrane filtration module and a recharging module, wherein a pipeline below a coagulating basin is connected with an inclined tube sedimentation basin, the inclined tube sedimentation basin is downwards connected with an intermediate basin, and the intermediate basin is downwards connected with the tubular micro-filtration membrane filtration module through a water supply pump; the intermediate tank is connected with a tubular microfiltration membrane device downwards through a water supply pump, a water outlet pipe of the tubular microfiltration membrane device is connected with a precision filter, the tubular microfiltration membrane device is connected with a cleaning tank through a cleaning pump, and a pipeline at the lower side of the precision filter is connected with a recharge module; the pipeline at the lower side of the precision filter is connected with a recharge tank, the pipeline at the upper layer of the recharge tank is connected with tubular microfiltration membrane equipment through a backwash pump, and the pipeline at the lower side of the recharge tank is connected with lake water through the recharge pump. The water quality treatment system of the utility model replaces the traditional nanofiltration desalination process through the tubular membrane filtration process, removes the impurities such as suspended solids and colloids in water, and accords with the discharge standard.
Description
Technical Field
The utility model belongs to the technical field of water treatment facilities, especially, relate to a water treatment system for surface water recharge.
Background
Abundant geothermal resources are stored in Tianjin city, the heat storage pressure is obviously reduced due to the large exploitation of the resources, the sustainable development and utilization of the geothermal resources are influenced, in recent years, a well recharge development and utilization mode is adopted on geothermal heating projects in China, and geothermal tail water is used for recharging a thermal reservoir, so that the supply amount of the thermal reservoir can be effectively increased, and the reduction trend of the heat storage pressure is relieved. However, the development and utilization time of the Tianjin geothermal resources is earlier, and a plurality of single-well systems which are not used for irrigation exist, so that the annual exploitation amount is still far higher than the recharge amount, and the heat storage pressure in a geothermal centralized exploitation area is in a continuous descending trend. If the recharging well is additionally built for the production wells, the implementation difficulty is very high due to the restriction of conditions such as economy, construction site, geological structure and the like. Under the condition, a new recharging method except well recharging is explored, the recharging supply amount of the geothermal concentrated exploitation area is increased, and the method has important practical significance. For example, in the region with abundant surface water resources, the surface water can be scientifically treated to be a water source meeting the geothermal recharging requirements, and then the concentrated recharging is carried out, so that the recharging amount of the geothermal fluid in the region is increased, and the effective replenishing effect on the heat reservoir in the concentrated exploitation region of the geothermal field is achieved.
The geothermal heating and irrigation pair well is generally a same-layer heating and irrigation system, and geothermal tail water after heat exchange is used as a recharging water source in the heating period, so that the recharging water can not influence the original water quality of a heat reservoir. If surface water is adopted for recharging, because the surface water is generally poor in quality, the direct recharging can cause groundwater pollution, and the surface water needs to be pretreated to meet the requirement standard of recharging water quality so as to be recharged. Foreign engineering examples using recycled water for recharging are provided, for example, aquifer recharging water source of Paso city, Texas, USA comes from Fred Hervey regeneration water factory, and powdered activated carbon, lime, sand filtration, ozone and other treatment processes are adopted to make secondary effluent reach recharging requirements; the pretreatment process of the reclaimed water of underground recharge in northern part of Australian Aldlede comprises the processes of a stabilization pond, a floatation filter (DAFF), chlorine disinfection, biological nitrogen and phosphorus removal (BNR) and the like, but no engineering example exists at present for the geothermal recharge treatment process of high salinity water. In a patent publication entitled "a water quality treatment device in a surface water recharge system", No. ZL2014202590174, a good recharge effect is achieved by the water quality treatment device. However, the water treatment process with the nanofiltration desalination process can produce part of highly mineralized concentrated water, and cannot meet the discharge requirement.
Therefore, in order to solve the above technical problems, it is necessary to design a novel water quality treatment device which can treat surface water to meet the emission standard.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a to surface water treatment back up to standard, recharge to the water quality treatment system that is used for surface water recharge of hot reservoir.
The technical scheme of the utility model as follows:
a water quality treatment system for surface water recharging is formed by connecting a coagulating sedimentation module, a tubular micro-filtration membrane filtration module and a recharging module;
the coagulating sedimentation module comprises a lift pump, a first bactericide tank, a coagulant tank, a first hardening agent removing tank, a second hardening agent removing tank, a coagulating basin, an inclined tube sedimentation basin, a second bactericide tank and an intermediate basin, wherein the water inlet end of the lift pump is connected with lake water through a water lifting pipe so as to lift the lake water, the water outlet end of the lift pump is connected with the coagulating basin through a pipeline, the first bactericide tank, the coagulant tank, the first hardening agent removing tank and the second hardening agent removing tank are sequentially connected on the pipeline between the lift pump and the coagulating basin, the coagulating basin is connected with the inclined tube sedimentation basin through a pipeline, the inclined tube sedimentation basin is connected with a sludge basin through a pipeline, a filter press and a sludge pump are connected with the sludge basin, the inclined tube sedimentation basin is connected with the intermediate basin through a pipeline, the intermediate basin is connected with the coagulating basin through a reflux pump, the second bactericide tank is connected on the pipeline between the inclined tube sedimentation basin and the intermediate basin, the intermediate tank is connected with the tubular microfiltration membrane filtration module through a water supply pump;
the tubular microfiltration membrane filtration module comprises tubular microfiltration membrane equipment, a cleaning pump, a cleaning tank and a precision filter, wherein the intermediate tank is connected with the tubular microfiltration membrane equipment through a water supply pump, a water outlet pipe of the tubular microfiltration membrane equipment is connected with the precision filter, the tubular microfiltration membrane equipment is connected with the cleaning tank through the cleaning pump, the tubular microfiltration membrane equipment is connected with the intermediate tank through a pipeline, and a pipeline at the lower side of the precision filter is connected with the recharging module;
the recharging module comprises a backwashing pump, a recharging pool, a recharging pump, a pH adjusting tank and an oxygen scavenger tank, a pipeline on the lower side of the precision filter is connected with the recharging pool, a pipeline on the upper layer of the recharging pool is connected with the tubular micro-filtration membrane equipment through the backwashing pump, a water production pipe is connected on the pipeline on the lower side of the recharging pool, and the water production pipe is connected with lake water through the recharging pump.
In the technical scheme, the water production pipe is connected with a pH adjusting tank and a deoxidant tank.
In the technical scheme, a stirrer is arranged in the coagulation tank and is used for stirring and mixing the coagulant, the bactericide and raw water.
In the technical scheme, the first bactericide tank, the coagulant tank, the first hardening agent removing tank and the second hardening agent removing tank are injected from the top of the coagulation tank.
The utility model has the advantages and positive effects that:
1. the utility model discloses a water treatment system comprises coagulating sedimentation module, tubular micro-filtration membrane filtration module and the three module of recharging module, and tubular membrane filtration has replaced "sand filtration + microfiltration" among the traditional treatment process, leans on pressure drive's physical filtration membrane through tubular micro-filtration membrane equipment, and its filter aperture's scope is 0.1-10 mu m, can high-efficiently get rid of impurity such as suspended solid, colloid in the former aquatic, and its filter fineness is high, makes it can reach the recharging standard.
2. Compared with the traditional treatment process, the water yield of the water quality treatment system of the utility model can reach 450m3And/h, compared with the traditional treatment device, the water yield is greatly improved.
Drawings
FIG. 1 is a schematic structural view of a water treatment system of the present invention;
FIG. 2 is a schematic diagram of the water balance design structure of the present invention;
in the figure:
1. a lift pump 2, a first bactericide tank 3 and a coagulant tank
4. A first hardening agent removing tank 5, a second hardening agent removing tank 6 and a coagulation tank
7. An inclined tube sedimentation tank 8, a second bactericide tank 9 and a reflux pump
10. Intermediate tank 11, water supply pump 12 and tubular microfiltration membrane equipment
13. Precision filter 14, cleaning pump 15, cleaning tank
16. Sludge tank 17, sludge pump 18 and filter press
19. Backwash pump 20, recharge tank 21, recharge pump
22. Deoxidant tank 23, pH adjusting tank 24 and water lifting pipe
25. Water production pipe
Detailed Description
The present invention will be described in further detail with reference to specific examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the present disclosure, as defined by the following claims.
Example 1
As shown in the figure, the water quality treatment system for recharging surface water of the utility model is formed by connecting a coagulating sedimentation module, a tubular micro-filtration membrane filtration module and a recharging module;
the coagulating sedimentation module comprises a lifting pump 1, a first bactericide tank 2, a coagulant tank 3, a first hardening agent removing tank 4, a second hardening agent removing tank 5, a coagulating basin 6, an inclined tube sedimentation tank 7, a second bactericide tank 8 and an intermediate tank 10, wherein the water inlet end of the lifting pump 1 is connected with lake water through a water lifting pipe 24 for lifting the lake water, the water outlet end of the lifting pump 1 is connected with the coagulating basin 6 through a pipeline, the first bactericide tank 2, the coagulant tank 3, the first hardening agent removing tank 4 and the second hardening agent removing tank 5 are sequentially connected on the pipeline between the lifting pump 1 and the coagulating basin 6, the coagulating basin 6 is connected with the inclined tube sedimentation tank 7 through a pipeline, the inclined tube sedimentation tank 7 is connected with a sludge tank 16 through a pipeline, a filter press 18 and a sludge pump 17 are connected with the intermediate tank 10 through a pipeline, the intermediate tank 10 is connected with the coagulating basin 6 through a reflux pump 9, the second bactericide tank 8 is connected on a pipeline between the inclined tube sedimentation tank 7 and the intermediate tank 10, and the intermediate tank 10 is connected with the tubular microfiltration membrane filtration module through a water supply pump 11;
the tubular microfiltration membrane filtration module comprises tubular microfiltration membrane equipment 12, a cleaning pump 14, a cleaning tank 15 and a precision filter 13, wherein the intermediate tank 10 is connected with the tubular microfiltration membrane equipment 12 through a water supply pump 11, a water outlet pipe of the tubular microfiltration membrane equipment 12 is connected with the precision filter 13, the tubular microfiltration membrane equipment 12 is connected with the cleaning tank 15 through the cleaning pump 14, the tubular microfiltration membrane equipment 12 is connected with the intermediate tank 10 through a pipeline, and a pipeline at the lower side of the precision filter 13 is connected with a recharge module;
the recharge module comprises a backwash pump 19, a recharge tank 20 and a recharge pump 21, a pipeline on the lower side of the precision filter 13 is connected with the recharge tank 20, a pipeline on the upper layer of the recharge tank 20 is connected with the tubular microfiltration membrane equipment 12 through the backwash pump 19, a water production pipe 25 is connected on the pipeline on the lower side of the recharge tank 20, and the water production pipe 25 is connected with lake water through the recharge pump 21.
Further, a pH adjusting tank 23 and an oxygen scavenger tank 22 are connected to the water production pipe 25.
Further, a stirrer is arranged in the coagulation tank 6 for stirring and mixing the coagulant, the bactericide and the raw water.
Further, the first bactericide tank 2, coagulant tank 3, first hardness remover tank 4 and second hardness remover tank 5 are filled from the top of the coagulation tank 6.
The lake water in the Tooli lake tourist area of the new coastal area in Tianjin is used as a water source, the water quality treatment device of the utility model is used for water quality treatment, and the treated water is recharged to the thistle county series mist mountain heat reservoir of the new coastal area.
1. The process flow of the water quality treatment system of the utility model is as follows:
the lake water is lifted by a lift pump through a water lifting pipe, and during the conveying process, a bactericide is added into the pipeline to kill microorganisms, bacteria and the like in the water; then conveying the mixture to a coagulation tank, adding a coagulant and a hardness remover into the coagulation tank, and stirring at a low speed to enable silt, suspended matters, colloid, microorganisms and the like in water to generate large floc and alum floc which are separated from the water; sludge is periodically discharged into a sludge tank, and is subjected to filter pressing treatment by a filter press, clear water is discharged, and the sludge is transported out for landfill treatment;
adding a bactericide into the effluent of the inclined tube sedimentation tank to inhibit the growth of microorganisms, then feeding the effluent into an intermediate tank, pumping the effluent into tubular microfiltration membrane filtration equipment by a water supply pump to further remove impurities such as suspended matters, colloids and bacteria, and feeding the produced water into a recharge tank;
the recharge water is recharged underground through a recharge pump, a deoxidant and a pH regulator are added before recharging to reach the recharge water requirement index, and the treated recharge water is conveyed to recharge through the recharge pump and is finally recharged into the hot reservoir.
The cleaning tank is used for cleaning the microfiltration membrane of the tubular microfiltration membrane equipment through the cleaning pump, the cleaned water is conveyed back to the middle tank, the cleaned water is pumped into the coagulation tank through the reflux pump, and silt, suspended matters, colloid, microorganisms and the like are separated from the water.
2. In the water treatment of the utility model, the water quantity balance design is as shown in figure 2:
of pretreatment devices for recirculated waterThe maximum treated water amount can reach 4753The water yield can reach 450m3H, 450m satisfying design3The recharging requirement of/h.
3. Major structure design
(1) The general plane design of the water treatment station house:
according to the maximum floor space limit requirements of water treatment process design and cooperation units, the size of the water treatment station house is 58m multiplied by 28m multiplied by 6m, and the total floor space is 1624m2。
(2) Pool design
According to the design requirements of the water treatment process, the recharging station is provided with a coagulation tank 2, an inclined tube sedimentation tank 2, an intermediate tank 1, a recharging tank 1 and a sludge tank 1, and the specific parameters are shown in table 1.
TABLE 1 Main pool parameter table
| Categories | Number of | Effective volume | Material of | Size of |
| |
2 seats | 60m3 | Steel concrete structure | 4.5m×4.5m×3.5m |
| Inclined |
2 seats | 1280m3 | Steel concrete structure | 32m×10m×4m |
| Intermediate pool | 1 seat | 675m3 | Steel concrete structure | 28m×6m×4.0m |
| Recharge pool | 1 seat | 450m3 | Steel concrete structure | 12m×9m×4.5m |
| Sludge tank | 1 seat | 450m3 | Steel concrete structure | 12m×9m×4.5m |
4. Major material equipment model selection design
The main equipment selected according to the designed water treatment process is shown in table 2:
TABLE 2 Main Material Equipment selection form table
The utility model discloses a water treatment system has replaced the processing of "sand filtration + microfiltration" through tubular microfiltration membrane filtration, and tubular microfiltration membrane is one kind and leans on pressure drive's physical filtration membrane, and the filtration aperture scope is 0.1 mu m-10 mu m, can effectively get rid of impurity such as suspended solid, colloid in the lake water for the raw water after the processing can reach follow-up membrane filtration system's the standard of intaking. Compared with the traditional 'sand filtration and precise filtration', the filter has low filtration precision and difficult back flushing, and in actual operation, the problem of water yield reduction caused by filter element blockage can occur, and substances trapped in the filter element easily penetrate through the filter material to influence the water quality of effluent.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described above by way of example, and it should be noted that any simple variants, modifications or other equivalent substitutions by a person skilled in the art without spending creative effort may fall within the scope of protection of the present invention without departing from the core of the present invention.
Claims (4)
1. A water treatment system for surface water recharging is characterized in that: the device is formed by connecting a coagulating sedimentation module, a tubular micro-filtration membrane filtration module and a recharging module;
the coagulating sedimentation module comprises a lift pump, a first bactericide tank, a coagulant tank, a first hardening agent removing tank, a second hardening agent removing tank, a coagulating basin, an inclined tube sedimentation basin, a second bactericide tank and an intermediate basin, wherein the water inlet end of the lift pump is connected with lake water through a water lifting pipe so as to lift the lake water, the water outlet end of the lift pump is connected with the coagulating basin through a pipeline, the first bactericide tank, the coagulant tank, the first hardening agent removing tank and the second hardening agent removing tank are sequentially connected on the pipeline between the lift pump and the coagulating basin, the coagulating basin is connected with the inclined tube sedimentation basin through a pipeline, the inclined tube sedimentation basin is connected with a sludge basin through a pipeline, a filter press and a sludge pump are connected with the sludge basin, the inclined tube sedimentation basin is connected with the intermediate basin through a pipeline, the intermediate basin is connected with the coagulating basin through a reflux pump, the second bactericide tank is connected on the pipeline between the inclined tube sedimentation basin and the intermediate basin, the intermediate tank is connected with the tubular microfiltration membrane filtration module through a water supply pump;
the tubular microfiltration membrane filtration module comprises tubular microfiltration membrane equipment, a cleaning pump, a cleaning tank and a precision filter, wherein the intermediate tank is connected with the tubular microfiltration membrane equipment through a water supply pump, a water outlet pipe of the tubular microfiltration membrane equipment is connected with the precision filter, the tubular microfiltration membrane equipment is connected with the cleaning tank through the cleaning pump, the tubular microfiltration membrane equipment is connected with the intermediate tank through a pipeline, and a pipeline at the lower side of the precision filter is connected with the recharging module;
the recharging module comprises a backwashing pump, a recharging pool, a recharging pump, a pH adjusting tank and an oxygen scavenger tank, a pipeline on the lower side of the precision filter is connected with the recharging pool, a pipeline on the upper layer of the recharging pool is connected with the tubular micro-filtration membrane equipment through the backwashing pump, a water production pipe is connected on the pipeline on the lower side of the recharging pool, and the water production pipe is connected with lake water through the recharging pump.
2. The water quality treatment system according to claim 1, wherein: the water production pipe is connected with a pH adjusting tank and a deoxidant tank.
3. The water quality treatment system according to claim 2, characterized in that: and a stirrer is arranged in the coagulation tank and is used for stirring and mixing the coagulant, the bactericide and the raw water.
4. A water treatment system according to claim 3, wherein: the first bactericide tank, the coagulant tank, the first hardening agent removing tank and the second hardening agent removing tank are injected from the top of the coagulation tank.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230042A (en) * | 2021-12-17 | 2022-03-25 | 天津地热勘查开发设计院 | Experiment platform and experiment method for recharging surface water serving as geothermal supplementary water |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230042A (en) * | 2021-12-17 | 2022-03-25 | 天津地热勘查开发设计院 | Experiment platform and experiment method for recharging surface water serving as geothermal supplementary water |
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Effective date of registration: 20230802 Address after: 300000 No. 189, Weiguo Road, Hedong District, Tianjin Patentee after: Tianjin Geothermal Exploration and Development Designing Institute Patentee after: Tianjin Geothermal Exploration and Development Design Institute Co.,Ltd. Address before: 300000 No. 189, Weiguo Road, Hedong District, Tianjin Patentee before: Tianjin Geothermal Exploration and Development Designing Institute |