A natural freezing fluid pressure treatment device and construction process

Abstract

The present invention relates to a fluid pressure treatment device for natural freezing, comprising a water tank, a water tank, a fluid pressure component and a wall. The water tank is arranged on one side of a brackish water lake, and a plurality of small holes are arranged on one side of the water tank near the center of the lake from top to bottom. The water tank is arranged on one side of the water tank near the center of the lake, and a submersible pump is arranged in the water tank. The submersible pump is connected to a water outlet pipe to the top of the water tank. The fluid pressure component comprises three connecting ends, the lower end is connected to the top of the water outlet pipe, and the left and right ends are respectively connected to a faucet and a nozzle. The faucet is used to inject water into the water tank, and the nozzle is used to spray water toward the center of the lake. The wall is arranged in the lake and is used to guide the nozzle to discharge water. The construction process comprises: injecting water into the water tank to freeze naturally, setting a support, collecting unfrozen water, spraying water to freeze, pumping water, evaporating and crystallizing, and melting ice. The device of the present invention occupies a small area and utilizes vertical space; the device is simple and energy-saving; the working efficiency is high, and fresh water and concentrated water can be separated in a few days in severe winter.

Description

Technical Field

[0001] The invention relates to the technical field of fluid processing devices, and in particular to a fluid pressure processing device and a construction process for naturally freezing brackish water using temperature conditions in the northwest region. Background Art

[0002] "Brackish water" is a popular term, which means that in drinking water, when the chloride exceeds a certain range (national standard 250mg / L), it is considered brackish water, and its salt content is 1-10g / L. my country's per capita water resources are about 30% of the world average, and water resources are scarce and unevenly distributed. Due to factors such as geomorphology, hydrogeology, climate environment, and the influence of "three wastes" pollution, the northwest region is dry and rainy, and most of the surface water is brackish water to varying degrees, and the water shortage problem is particularly prominent. According to statistics, the annual exploitable amount of brackish water in the northwest region is 4.69 billion cubic meters, mainly distributed in Gansu, Xinjiang, Ningxia and western Inner Mongolia. At present, brackish water desalination devices are mostly water treatment devices produced by using the principle of reverse osmosis technology, combined with microcomputer technology and mechatronics technology. The desalination of brackish water is essentially the desalination of salt water, which desalinates the salt water or treats it to meet the drinking water standard. Reverse osmosis technology used in brackish water desalination devices.

[0003] Existing brackish water desalination processes are powered by fossil fuels, which consume a lot of energy when used in large-scale projects. In addition, the gases and wastewater generated in the process are very harmful to the environment. Secondly, the treated water and salt need to be treated again to remove harmful elements, which increases the cost and time of subsequent operations and increases the difficulty of treating wastewater. Summary of the invention

[0004] The technical problem to be solved by the present invention is: in order to overcome the deficiencies in the prior art, a natural freezing fluid pressure treatment device and a construction process are provided.

[0005] The technical solution adopted by the present invention is: a natural freezing fluid pressure treatment device, including a water tank, a water tank, a fluid pressure component and a wall,

[0006] The water tank is arranged on one side of the brackish water lake. A plurality of small holes are arranged from top to bottom on the side of the water tank near the center of the lake. A short through pipe is arranged horizontally in the small hole and penetrates into the middle section of the water tank. A wooden plug is plugged on the outside of the short through pipe.

[0007] The water tank is arranged on one side of the water tank near the center of the lake, and a submersible pump is arranged in the water tank, and the submersible pump is connected to a water outlet pipe to the top of the water tank.

[0008] The fluid pressure component includes three connection ends, the lower end is connected to the top of the water outlet pipe and a secondary filtering device is provided at the connection, and the left and right ends are respectively connected to a faucet and a nozzle. The faucet is used to fill water into the water tank, and the nozzle is used to spray water toward the center of the lake.

[0009] The wall is set in the lake and used to guide the water out of the nozzle. A plurality of long strip perforations are vertically arranged in the middle of the wall. A plurality of fin plates inclined upward and outward are arranged on both sides of the wall. A guide plate is arranged at the top of the wall.

[0010] A gate is arranged on one side of the bottom edge of the water tank, and a primary filtering device is arranged at the gate.

[0011] Furthermore, a support rod for supporting ice cubes is provided in the water tank, and a plurality of horizontal support plates are provided on the support rod; the support rod is made of metal. When the temperature rises, heat can be transferred to the bottom to accelerate the melting of ice cubes. If water is urgently needed, heat can be generated by electrifying the metal support rod to help the ice cubes melt quickly.

[0012] Furthermore, the lake is provided with support members partially inserted into the lake bottom, and the support members are provided with fan blades for supporting the ice layer from top to bottom; there are a plurality of support members, and the support members are interconnected by connecting members.

[0013] Furthermore, the width of the fin plate gradually increases from top to bottom, and a water receiving bucket is provided under the lowest fin plate.

[0014] A natural freezing fluid pressure treatment construction process comprises the following steps:

[0015] a. Natural freezing of water tanks: Under low temperature, open the gate to allow water from the lake to enter the water tank, switch the fluid pressure component to the tap to discharge water, start the submersible pump, and inject a certain depth of water into the water tank until the short-through pipe at the bottom is submerged and close to the adjacent short-through pipe above. After a period of time under natural conditions, the water surface freezes. Continue to inject a certain depth of water into the water tank until a short-through pipe is submerged and close to the adjacent short-through pipe above. After a period of time under natural conditions, the water surface freezes. Repeat the above process until the water tank is filled with water or the water in the lake is drained, and multiple layers of ice are formed in the water tank;

[0016] b. Setting supports: Setting supports at intervals in the lake, with the bottom of the supports placed on the bottom of the lake;

[0017] c. Collect unfrozen water: After a period of time, close the gate, remove the wooden plug on the outside of the short pipe, and the unfrozen concentrated brine under the ice layer will flow out and be collected in the water tank;

[0018] d. Water spraying and freezing: After the fluid pressure component is switched to the nozzle to discharge water, the submersible pump is started to spray the concentrated brine in the water tank onto the wall in the lake. The concentrated brine then forms an ice surface on the surface of the fin plate. The concentrated brine is further concentrated, and the unfrozen concentrated brine flows down along the inclined fin plate from the perforations of the wall to the water receiving bucket at the bottom;

[0019] e. Pumping water: install a water inlet hose connected to the water inlet end of the water pump at the lowest depression of the riverbed, discharge the concentrated brine in the water receiving bucket into the riverbed for further freezing, and then install a water outlet hose connected to the water outlet end of the water pump on the bottom layer of ice formed, and pump all the unfrozen concentrated brine under the bottom layer of ice to the bottom layer of ice through the water pump to continue freezing to form the second layer of ice, remove the water inlet hose and water outlet hose connected to the water pump, and then connect the removed water outlet hose to the water inlet end of the water pump as the water inlet hose, and install a water outlet hose connected to the water outlet end of the water pump on the second layer of ice, and pump all the unfrozen concentrated brine under the second layer of ice to the second layer of ice through the water pump to continue freezing, and repeat the above process until the top layer of ice that covers the support is formed on the top of the support, and lay a layer of plastic cloth on the surface of the top layer of ice, fold the plastic cloth around to form a fence, and pump the unfrozen concentrated brine under the top layer of ice to the surface of the plastic cloth and gather;

[0020] f. Evaporation and crystallization: The concentrated brine collected in the plastic sheet evaporates and crystallizes under natural conditions;

[0021] g. Melting ice into water: Open the gate and wait for the natural season to change and the temperature to rise, so that the ice in the water tank and the ice layer in the lake will melt.

[0022] Furthermore, in step e, the depth of the concentrated brine pumped onto the ice layer is 5-10 cm to prevent the ice layer from collapsing.

[0023] Furthermore, in step e, the plastic sheet is a black, heat-insulating and water-impermeable foamed plastic sheet.

[0024] Compared with the prior art, the present invention has the following advantages: the device of the present invention occupies a small area and utilizes vertical space; the device is simple and saves energy; the working efficiency is high, and fresh water and concentrated water can be separated in a few days in severe winter. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the structure of the present invention;

[0026] Figure 2 It is another structural schematic diagram of the present invention;

[0027] Figure 3 The present invention Figure 2 The cross-sectional diagram at A in the middle;

[0028] Figure 4It is a working schematic diagram of the support member of the present invention;

[0029] Figure 5 It is a structural schematic diagram of the support member of the present invention.

[0030] Numbers in the figure: 1-water tank, 2-small hole, 3-short pipe, 4-water tank, 5-submersible pump, 6-outlet pipe, 7-fluid pressure component, 8-faucet, 9-nozzle, 10-wall, 11-perforation, 12-fin plate, 13-guide plate, 14-gate, 15-support rod, 16-horizontal support plate, 17-water bucket, 19-water pump, 20-lake, 21-support part, 22-fan blade, 23-connecting part, 24-ice layer, 31-wooden plug, 71-secondary filtration device, 181-water inlet hose, 182-water outlet hose. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below. The embodiments are implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0032] A fluid pressure treatment device for natural freezing, comprising a water tank 1, a water tank 4, a fluid pressure component 7 and a wall 10,

[0033] The water tank 1 is arranged at one side of the brackish water lake 20. A plurality of small holes 2 are arranged from top to bottom on one side of the water tank 1 near the center of the lake 20. A short through pipe 3 extending into the middle section of the water tank 1 is arranged horizontally in the small hole 2. A wooden plug 31 is plugged on the outside of the short through pipe 3.

[0034] The water tank 4 is arranged on the side of the water tank 1 near the center of the lake 20. A submersible pump 5 is arranged in the water tank 4. The submersible pump 5 is connected to a water outlet pipe 6 at the top of the water tank 1.

[0035] The fluid pressure component 7 includes three connection ends, the lower end is connected to the top of the water outlet pipe 6 and a secondary filtering device 71 is provided at the connection, and the left and right ends are respectively connected to a faucet 8 and a nozzle 9, the faucet 8 is used to inject water into the water tank 1, and the nozzle 9 is used to spray water toward the center of the lake 20.

[0036] The wall 10 is arranged in the lake 20 and is used to guide the water out of the nozzle 9. A plurality of long strip-shaped perforations 11 are vertically arranged in the middle of the wall 10. A plurality of fin plates 12 inclined upward and outward are arranged on both sides of the wall 10. A guide plate 13 is arranged at the top of the wall 10.

[0037] A gate 14 is provided at one side of the bottom edge of the water tank 4 , and a primary filtering device is provided at the gate 14 .

[0038] The water tank 1 is provided with a support rod 15 for supporting ice cubes, and the support rod 15 is provided with a plurality of horizontal support plates 16; the support rod 15 is made of metal. When the temperature rises, heat can be transferred to the bottom to accelerate the melting of ice cubes. If water is urgently needed, heat can be generated by electrifying the metal support rod 15 to help the ice cubes melt quickly.

[0039] The lake 20 is provided with support members 21 partially inserted into the lake bottom, and the support members 21 are provided with fan blades 22 for supporting the ice layer 24 from top to bottom, and there are multiple support members 21, which are connected to each other by ropes. The support members are made of stainless steel and are a sealed hollow structure, so as to support the plastic sheet for salt drying operation.

[0040] The width of the fin plates 12 gradually increases from top to bottom, and a water receiving bucket 17 is provided under the lowest fin plate 12 .

[0041] A natural freezing fluid pressure treatment construction process comprises the following steps: selecting the winter in Korla area, the TDS of the lake 20 to be treated is 14.67 g / L, the outdoor temperature is -15.1°C, and the volume of the water tank 1 is 2 / 3 to 1 times the volume of the lake 20.

[0042] a. Filling the water tank 1 with water and freezing naturally: Open the gate 14 to allow the water in the lake 20 to enter the water tank 4, switch the fluid pressure component 7 to the tap 8 to discharge water, and then start the submersible pump 5, and inject 20 cm deep water into the water tank 1, at this time submerging the short-through pipe 3 at the bottom and approaching the adjacent short-through pipe 3 above. After 24 hours under natural conditions, the water surface freezes, and continue to inject 20 cm deep water into the water tank 1, submerging one short-through pipe 3 and approaching the adjacent short-through pipe 3 above. After 24 hours under natural conditions, the water surface freezes, and repeat the above process until the water tank 1 is filled with water or the water in the lake 20 is drained, and multiple layers of ice are formed in the water tank 1;

[0043] b. Install support 21: Every 4m in the lake 20 2 A support member 21 with a height of 0.4-0.6m is arranged inside, and the bottom 15-20cm of the support member 21 is placed in the mud at the bottom of the lake 20 and is frozen and fixed in the mud under natural conditions. The support member 21 is provided with fan blades 22 at intervals of 5cm from top to bottom, and the bottom 15-20cm thereof is not provided with fan blades 22, and the support members 21 are connected to each other by ropes;

[0044] c. Collecting unfrozen water: After 24-72 hours, the temperature of the whole process is always kept below -15℃, close the gate 14, remove the wooden plug 31 outside the short-through pipe 3, and the unfrozen concentrated brine under the ice layer flows out and is collected in the water tank 4;

[0045] d. Spraying water to freeze: After the fluid pressure component 7 is switched to the nozzle 9 to discharge water, the submersible pump 5 is started. When the temperature is -15.2°C, the concentrated brine in the water tank 4 is sprayed onto the wall 10 in the lake 20 at a spraying speed of 1.6 L / min. Then the concentrated brine forms an ice surface on the surface of the fin plate 12. The concentrated brine is further concentrated. The sprayed water is diverted by the guide plate 13 to the side away from the nozzle 9, making full use of both sides of the wall 10 to form ice on both sides of the wall 10. The unfrozen concentrated brine flows downward from the perforation 11 of the wall 10 along the inclined fin plate 12 to the water receiving bucket 17 at the bottom. At this time, the TDS of the concentrated brine is 130.2 g / L.

[0046] e. Pumping water by water pump 19: At this time, the lake 20 is dry and the riverbed is frozen hard. With the continuous low temperature (-15℃~-20℃), a water inlet hose 181 connected to the water inlet end of the water pump 19 is set at the lowest depression of the riverbed to discharge the concentrated brine in the water receiving bucket 17 into the riverbed. After it is left for 2-5 days to freeze, a water outlet hose 182 connected to the water outlet end of the water pump 19 is set on the bottom layer of ice 24 formed. The unfrozen concentrated brine under the bottom layer of ice 24 is pumped to the bottom layer of ice 24 through the water pump 19. The depth of the concentrated brine on the upper surface of the ice layer 24 is controlled to be 5-10cm to prevent the ice surface from collapsing. After it is left for 3-6 days to freeze to form the second layer of ice 24, the water inlet hose 182 connected to the water pump 19 is removed. The pipe 181 and the water outlet hose 182 are then connected to the water inlet end of the water pump 19 as the water inlet hose 181, and a water outlet hose 182 connected to the water outlet end of the water pump 19 is set on the second layer of ice 24, and the unfrozen concentrated brine under the second layer of ice 24 is pumped to the second layer of ice 24 through the water pump 19 to continue to freeze, and the above process is repeated until the top layer of ice 24 that covers the support 21 is formed on the top of the support 21, and a layer of black heat-insulating and waterproof foamed plastic cloth is laid on the surface of the top layer of ice 24, and the plastic cloth is folded around to form a fence, and the unfrozen concentrated brine under the top layer of ice 24 is pumped to the surface of the plastic cloth and then gathered. At this time, the TDS of the concentrated brine is 283.1g / L;

[0047] f. Evaporation and crystallization: The concentrated salt water gathered in the plastic sheet evaporates and crystallizes under the blowing of cold wind;

[0048] g. Melting of ice: When spring comes and the temperature gradually rises, the gate 14 is opened, and the ice in the water tank 1 and the ice layer 24 of the lake 20 melt, forming fresh water that flows into the lake 20;

[0049] h. Continue to evaporate and crystallize: The salt in the plastic sheet has crystallized, but there is still a small amount of concentrated bitter and salty water. As the amount of ice and water in the lake 20 increases, some of the unmelted ice blocks float up with the support 21 (the support 21 is connected by a rope to form a floating net), holding the plastic sheet and the concentrated bitter and salty water therein to continue evaporating in the spring or even summer sun until they are dried and become dry salt blocks.

[0050] Finally, the plastic sheets and the salt in them were collected, and a total of 1098kg of salt was obtained. After analysis, sodium chloride accounted for 98%, potassium chloride 1%, magnesium sulfate 0.2%, and potassium nitrate 0.8%, which can be sold as industrial raw materials;

[0051] After treatment, the TDS of the water in Lake 20 is 1.02 g / L, which can be used as agricultural water.

[0052] The above-mentioned ideal embodiments of the present invention are for inspiration. Through the above-mentioned description, relevant staff can make various changes and modifications without departing from the technical idea of ​​the present invention. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A fluid pressure treatment device for natural freezing, characterized in that: It comprises a water tank (1), a water tank (4), a fluid pressure component (7) and a wall (10), The water tank (1) is arranged on one side of a brackish water lake (20). A plurality of small holes (2) are arranged from top to bottom on one side of the water tank (1) near the center of the lake (20). A short through pipe (3) is arranged horizontally in the small hole (2) and extends into the middle of the water tank (1). A wooden plug (31) is plugged on the outside of the short through pipe (3). The water tank (4) is arranged on the side of the water tank (1) near the center of the lake (20), and a submersible pump (5) is arranged in the water tank (4). The submersible pump (5) is connected to a water outlet pipe (6) at the top of the water tank (1). The fluid pressure component (7) comprises three connection ends, the lower end is connected to the top of the water outlet pipe (6), and the left and right ends are respectively connected to a faucet (8) and a nozzle (9), wherein the faucet (8) is used to inject water into the water tank (1), and the nozzle (9) is used to spray water toward the center of the lake (20). The wall (10) is arranged in the lake (20) and is used for guiding the water discharge of the nozzle (9). A plurality of long strip-shaped perforations (11) are vertically arranged in the middle of the wall (10). A plurality of fin plates (12) inclined upward and outward are arranged on both sides of the wall (10). A guide plate (13) is arranged at the top of the wall (10). A gate (14) is provided on one side of the bottom edge of the water tank (4).

2. A fluid pressure treatment device for natural freezing according to claim 1, characterized in that: A primary filtering device is provided at the gate (14), and a secondary filtering device (71) is provided at the connection between the water outlet pipe (6) and the fluid pressure component (7).

3. A fluid pressure treatment device for natural freezing according to claim 1, characterized in that: A support rod (15) is provided in the water tank (1), and a plurality of horizontal support plates (16) are provided on the support rod (15).

4. A fluid pressure treatment device for natural freezing according to claim 3, characterized in that: The support rod (15) is made of metal.

5. A fluid pressure treatment device for natural freezing according to claim 1, characterized in that: Support members (21) partially inserted into the lake bottom are arranged at intervals in the lake (20), and fan blades (22) are arranged at intervals from top to bottom on the support members (21), and the support members (21) are connected to each other via connecting members (23).

6. A fluid pressure treatment device for natural freezing according to claim 1, characterized in that: The width of the fin plate (12) increases gradually from top to bottom, and a water receiving bucket (17) is provided under the lowest fin plate (12).

7. A construction process for a fluid pressure treatment device for natural freezing as claimed in any one of claims 1 to 6, characterized in that: The following steps are involved: a. Filling the water tank (1) with water to freeze naturally: Under low temperature, open the gate (14) to allow water from the lake (20) to enter the water tank (4), switch the fluid pressure component (7) to the tap (8) to discharge water, and then start the submersible pump (5), and inject a certain depth of water into the water tank (1) until the short-through pipe (3) at the bottom is submerged and close to the adjacent short-through pipe (3) above. After a period of time under natural conditions, the water surface freezes, and continue to inject a certain depth of water into the water tank (1) until a short-through pipe (3) is submerged and close to the adjacent short-through pipe (3) above. After a period of time under natural conditions, the water surface freezes, and the above process is repeated until the water tank (1) is filled with water or the water in the lake (20) is drained, and multiple layers of ice are formed in the water tank (1); b. Setting a support member (21): The support member (21) is arranged at intervals in the lake (20), and the bottom of the support member (21) is placed at the bottom of the lake (20); c. Collecting unfrozen water: After a period of time, close the gate (14), remove the wooden plug (31) on the outside of the short-through pipe (3), and the unfrozen brine under the ice flows out and is collected in the sink (4); d. Spraying water to freeze: After the fluid pressure component (7) is switched to the nozzle (9) to discharge water, the submersible pump (5) is started to spray the concentrated brine in the water tank (4) onto the wall (10) in the lake (20). The concentrated brine then forms an ice surface on the surface of the fin plate (12). The concentrated brine is further concentrated, and the unfrozen concentrated brine flows downward along the inclined fin plate (12) from the perforation (11) of the wall (10) to the water receiving bucket (17) at the bottom; e. Pumping water with a water pump (19): a water inlet hose (181) connected to the water inlet end of the water pump (19) is arranged at the lowest depression of the riverbed, and the concentrated brine in the water receiving bucket (17) is discharged into the riverbed to continue freezing. Then, a water outlet hose (182) connected to the water outlet end of the water pump (19) is arranged on the bottommost ice layer (24) formed, and the unfrozen concentrated brine under the bottommost ice layer (24) is pumped to the bottommost ice layer (24) through the water pump (19) to continue freezing to form a second ice layer (24). The water inlet hose (181) and the water outlet hose (182) connected to the water pump (19) are removed, and then the removed water outlet hose (182) is removed. 2) connecting the water inlet end of the water pump (19) to serve as a water inlet hose (181) and arranging a water outlet hose (182) connected to the water outlet end of the water pump (19) on the second layer of ice (24), pumping all the unfrozen concentrated brine under the second layer of ice (24) to the second layer of ice (24) through the water pump (19) to continue freezing, repeating the above process until an uppermost layer of ice (24) that covers the support (21) is formed on the top of the support (21), laying a layer of plastic cloth on the surface of the uppermost layer of ice (24), folding the plastic cloth around to form a barrier, pumping the unfrozen concentrated brine under the uppermost layer of ice (24) to the surface of the plastic cloth and gathering; f. Evaporation and crystallization: The concentrated brine collected in the plastic sheet evaporates and crystallizes under natural conditions; g. Melting ice into water: Open the gate (14), and after the temperature rises, the ice in the water tank (1) and the ice layer (24) of the lake (20) melt.

8. The construction process according to claim 7, characterized in that: In step e, the depth of the concentrated brine pumped onto the ice layer (24) is 5-10 cm to prevent the ice layer (24) from collapsing.

9. The construction process according to claim 7, characterized in that: In step e, the plastic sheet is a black, heat-insulating and water-impermeable foamed plastic sheet.

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