CN115611348A - Naturally-frozen fluid pressure treatment device and construction process - Google Patents

Abstract

The invention relates to a naturally-frozen fluid pressure treatment device, which comprises a water tank, a fluid pressure part and a wall, wherein the water tank is arranged on one side in a bitter lake, one side of the water tank, which is close to the center of the lake, is provided with a plurality of small holes from top to bottom, the water tank is arranged on one side of the water tank, which is close to the center of the lake, a submersible pump is arranged in the water tank, the submersible pump is connected with a water outlet pipe connected to the top end of the water tank, the fluid pressure part comprises three connecting ends, the lower end of the fluid pressure part is connected with the top end of the water outlet pipe, the left end and the right end of the fluid pressure part are respectively connected with a water tap and a nozzle, the water tap is used for injecting water into the water tank, the nozzle is used for spraying water to the center of the lake, and the wall is arranged in the lake and is used for guiding the nozzle to discharge water; the construction process comprises the following steps: the water tank is filled with water to be naturally frozen, the supporting piece is arranged, unfrozen water is collected, water is sprayed to be frozen, water is pumped by the water pump, evaporation and crystallization are carried out, and ice block water is formed. The device has small floor area and utilizes vertical space; the device is simple, and energy is saved; the working efficiency is high, and fresh water and concentrated water can be separated in several days in severe cold winter.

Description

Naturally-frozen fluid pressure treatment device and construction process

Technical Field

The invention relates to the technical field of fluid treatment devices, in particular to a fluid pressure treatment device for naturally freezing brackish water by utilizing the temperature condition in the northwest region and a construction process.

Background

The bitter salt water is a common name method, and refers to that in drinking water, when the chloride exceeds a certain range (250 mg/L in national standard), the bitter salt water is regarded as bitter salt water, and the salt content of the bitter salt water is 1-10 g/L. China occupies 30% of the average water resource in the world, and the water resource is in short supply and is unevenly distributed. Due to factors such as landform, hydrogeology, climate environment and the like and the influence of three-waste pollution, the problems of drought and rain in northwest regions, most of surface water is brackish water with different degrees, and water shortage are particularly prominent. According to statistics, the annual recoverable amount of bitter water in northwest region is 46.9 billion cubic meters, and the bitter water is mainly distributed in western parts of Gansu, xinjiang, ningxia and inner Mongolia. At present, most of bitter water desalination devices utilize the principle of reverse osmosis technology and are water treatment devices produced by combining microcomputer technology and electromechanical integration technology. The desalination of the brackish water is essentially the desalination of salt water, so that the salt water is desalted and desalted or reaches the drinking water standard after being treated. The bitter salt water desalting plant adopts reverse osmosis technology.

The existing brackish water desalting process adopts fossil fuel to provide power, is used for large-scale projects which consume energy, and has great harm to the environment due to gas and waste water generated in the process; secondly, the treated water and salt also need to be treated again in order to remove harmful elements, which increases the cost and time of subsequent operations and increases the difficulty of treating wastewater.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: in order to overcome the defects in the prior art, a naturally-frozen fluid pressure treatment device and a construction process are provided.

The technical scheme adopted by the invention is as follows: a fluid pressure treatment device for natural freezing comprises a water tank, a fluid pressure part and a wall,

the water tank is arranged at one side in the brackish water lake, a plurality of small holes are arranged at one side of the water tank close to the center of the lake from top to bottom, short through pipes which go deep into the middle section of the water tank are horizontally arranged in the small holes, wood plugs are plugged outside the short through pipes,

the water tank is arranged at one side of the water tank close to the center of the lake, a submersible pump is arranged in the water tank and is connected with a water outlet pipe connected to the top end of the water tank,

the fluid pressure component comprises three connecting ends, the lower end of the fluid pressure component is connected with the top end of the water outlet pipe, a secondary filtering device is arranged at the connecting part, the left end and the right end of the fluid pressure component are respectively connected with a water faucet and a nozzle, the water faucet is used for injecting water into the water tank, the nozzle is used for spraying water towards the center direction of the lake,

the wall is arranged in the lake and used for guiding the water from the nozzle, a plurality of strip-shaped through holes are vertically arranged in the middle of the wall, a plurality of fin plates which incline upwards and outwards are arranged on two sides of the wall, a guide plate is arranged at the top end of the wall,

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

Furthermore, a supporting rod for supporting ice blocks is arranged in the water tank, and a plurality of horizontal supporting plates are arranged on the supporting rod; the support rod is made of metal. When the air temperature rises, the heat can be transferred to the bottom, and the dissolution of ice blocks is accelerated. If water is needed urgently, heat can be generated by electrifying the metal supporting rod to help the ice blocks to melt quickly.

Furthermore, supporting pieces partially inserted into the lake bottom are arranged in the lake at intervals, and fan blades for supporting the ice layer are arranged in the supporting pieces at intervals from top to bottom; the supporting pieces are provided with a plurality of supporting pieces, and the supporting pieces are mutually connected through connecting pieces.

Furthermore, the width of the fin plate is gradually increased from top to bottom, and a water receiving hopper is arranged below the lowermost fin plate.

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

a. water is injected into the water tank and naturally freezes: at low temperature, opening a gate to allow water in the lake to enter a water tank, switching a fluid pressure part to a faucet to discharge water, starting a submersible pump, injecting water with a certain depth into a water tank until the lowest short through pipe is submerged and close to an upper adjacent short through pipe, freezing the surface of the water after a period of time under natural conditions, continuously injecting water with a certain depth into the water tank until the short through pipe is submerged and close to the upper adjacent short through pipe, freezing the surface of the water after a period of time under natural conditions, repeating the above process until the water tank is filled with water or the water in the lake is pumped dry, and forming multiple layers of ice blocks in the water tank;

b. setting a support piece: supporting pieces are arranged at intervals in the lake, and the bottoms of the supporting pieces are arranged at the bottom of the lake;

c. collecting unfrozen water: after a period of time, closing the sluice gate, taking out the wooden plug outside the short through pipe, discharging unfrozen strong brine below the ice layer, and collecting the brine in the water tank;

d. spraying water and freezing: switching the fluid pressure part to a nozzle to discharge water, starting a submersible pump, spraying strong brine in a water tank onto a wall in a lake, forming an ice surface on the surface of the fin plate, further concentrating the strong brine, and allowing the unfrozen strong brine to flow downwards along the inclined fin plate from a through hole of the wall to a water receiving hopper at the bottom;

e. pumping water by a water pump: arranging a water inlet hose connected with a water inlet end of a water pump at the lowest depression of a riverbed, discharging strong brine in a water receiving bucket into the riverbed for continuous icing, then arranging a water outlet hose connected with a water outlet end of the water pump on the formed ice layer of the lowest layer, pumping the strong brine which is not iced under the ice layer of the lowest layer onto the ice layer of the lowest layer through the water pump for continuous icing to form an ice layer of a second layer, taking down the water inlet hose and the water outlet hose which are connected with the water pump, then connecting the taken-down water outlet hose with the water inlet end of the water pump to serve as the water inlet hose, arranging a water outlet hose connected with the water outlet end of the water pump on the ice layer of the second layer, pumping the strong brine which is not iced under the ice layer of the second layer onto the ice layer of the second layer through the water pump for continuous icing, repeating the above process until the ice layer of the uppermost layer which does not pass through the support is formed at the top end of the support, laying a layer of plastic cloth on the surface of the uppermost layer, folding the plastic cloth to form a surrounding wall, and pumping the strong brine which is not iced under the uppermost layer onto the surface of the plastic cloth;

f. evaporation and crystallization: evaporating and crystallizing concentrated brine gathered in the plastic cloth under natural conditions;

g. ice-agglomerated water: and opening the sluice gate, and melting ice blocks in the water tank and the ice layer of the lake after the temperature is raised due to the change of natural seasons.

Further, in the step e, the depth of the concentrated salt water pumped to the ice layer is 5-10cm so as to prevent the ice layer from collapsing.

Further, in the step e, the plastic cloth is black heat-insulating and waterproof foamed plastic cloth.

Compared with the prior art, the invention has the following advantages: the device has small floor area and utilizes vertical space; the device is simple, and energy is saved; the working efficiency is high, and fresh water and concentrated water can be separated in several days in severe cold winter.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is another schematic structural view of the present invention;

FIG. 3 is a schematic cross-sectional view taken at A of FIG. 2 in accordance with the present invention;

FIG. 4 is a schematic view of the operation of the support of the present invention;

fig. 5 is a schematic structural view of the support member of the present invention.

The reference numbers in the figures: 1-a water tank, 2-a small hole, 3-a short-path pipe, 4-a water tank, 5-a submersible pump, 6-a water outlet pipe, 7-a fluid pressure part, 8-a water faucet, 9-a nozzle, 10-a wall, 11-a perforation, 12-a fin plate, 13-a guide plate, 14-a gate, 15-a support rod, 16-a horizontal support plate, 17-a water receiving hopper, 19-a water pump, 20-a lake, 21-a support piece, 22-a fan blade, 23-a connecting piece, 24-an ice layer, 31-a wooden plug, 71-a secondary filtering device, 181-a water inlet hose and 182-a water outlet hose.

Detailed Description

The following examples are given for the detailed implementation and specific operation of the embodiments of the present invention, but the scope of the present invention is not limited to the following examples.

A fluid pressure treatment apparatus for natural freezing, comprising a water tank 1, a water tank 4, a fluid pressure member 7 and a wall 10,

the water tank 1 is arranged at one side in the brackish water lake 20, one side of the water tank 1 close to the center of the lake 20 is provided with a plurality of small holes 2 from top to bottom, short through pipes 3 which go deep into the middle section of the water tank 1 are horizontally arranged in the small holes 2, wood plugs 31 are plugged outside the short through pipes 3,

the water tank 4 is arranged at one 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 with a water outlet pipe 6 connected to the top end of the water tank 1,

the fluid pressure part 7 comprises three connecting ends, the lower end is connected with the top end of the water outlet pipe 6, the connecting part is provided with a secondary filtering device 71, the left end and the right end are respectively connected with a water tap 8 and a nozzle 9, the water tap 8 is used for injecting water into the water tank 1, the nozzle 9 is used for spraying water towards the center direction of the lake 20,

the wall 10 is arranged in the lake 20 and used for leading the water to flow out from the flow guide nozzle 9, a plurality of strip-shaped through holes 11 are vertically arranged in the middle of the wall 10, a plurality of fin plates 12 which incline towards the upper part of the outer side are arranged at the two sides of the wall 10, a flow guide plate 13 is arranged at the top end of the wall 10,

a lock opening 14 is formed in one side of the bottom edge of the water tank 4, and a primary filtering device is arranged at the lock opening 14.

A supporting rod 15 for supporting ice blocks is arranged in the water tank 1, and a plurality of horizontal supporting plates 16 are arranged on the supporting rod 15; the support rod 15 is made of metal. When the air temperature rises, the heat can be transferred to the bottom, and the dissolution of ice blocks is accelerated. If water is needed urgently, the metal supporting rod 15 can be electrified to generate heat, so that the ice blocks can be helped to be rapidly melted.

The lake 20 is internally provided with a plurality of supporting pieces 21 which are partially inserted into the bottom of the lake at intervals, the supporting pieces 21 are provided with fan blades 22 for supporting an ice layer 24 at intervals from top to bottom, and the supporting pieces 21 are mutually connected through ropes. The supporting piece is made of stainless steel and is of a sealed hollow structure, so that the plastic cloth can be subsequently supported to carry out salt drying operation.

The width of the fin plate 12 is gradually increased from top to bottom, and a water receiving hopper 17 is arranged below the lowermost fin plate 12.

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

a. Water is injected into the water tank 1 and naturally freezes: opening a sluice gate 14, allowing water in the lake 20 to enter a water tank 4, switching a fluid pressure part 7 to a water faucet 8 to discharge water, starting a submersible pump 5, injecting water with the depth of 20cm into a water tank 1, submerging a short through pipe 3 at the lowest end and approaching to a short through pipe 3 adjacent to the upper end, freezing the surface of the water after 24 hours under natural conditions, continuously injecting water with the depth of 20cm into the water tank 1, submerging a short through pipe 3 and approaching to the short through pipe 3 adjacent to the upper end, freezing the surface of the water after 24 hours under natural conditions, repeating the above processes until the water tank 1 is full of water or the water in the lake 20 is drained, and forming a plurality of layers of ice blocks in the water tank 1;

b. the support member 21 is provided: every 4m in the lake 20 ² A supporting piece 21 with the height of 0.4-0.6m is arranged in the lake 20, the bottom 15-20cm of the supporting piece 21 is placed in the silt at the bottom of the lake 20 and is frozen and fixed in the silt under natural conditions, fan blades 22 are arranged on the supporting piece 21 from top to bottom at intervals of 5cm, the fan blades 22 are not arranged at the bottom 15-20cm of the supporting piece 21, and the supporting pieces 21 are mutually connected through ropes;

c. collecting unfrozen water: after 24-72h, the temperature in the whole process is always kept below-15 ℃, the gate 14 is closed, the wooden plug 31 on the outer side of the short-distance pipe 3 is taken out, and unfrozen concentrated brine under the ice layer flows out and is collected into the water tank 4;

d. spraying water and freezing: the fluid pressure part 7 is switched to the nozzle 9 to discharge water, then the submersible pump 5 is started, when the temperature is-15.2 ℃, the strong brine in the water tank 4 is sprayed onto the wall 10 in the lake 20, the spraying speed is 1.6L/min, then the strong brine forms ice surfaces on the surfaces of the fin plates 12, the strong brine is further concentrated, the sprayed water is guided to one surface far away from the nozzle 9 by the guide plate 13, the two surfaces of the wall 10 are fully utilized, freezing is formed on the two surfaces of the wall 10, the unfrozen strong brine flows downwards along the inclined fin plates 12 from the through holes 11 of the wall 10 to the water receiving hopper 17 at the bottom, and the TDS of the strong brine is 130.2 g/L;

e. the water pump 19 pumps water: at the moment, the lake 20 is in a dry state, the river bed is frozen to be hard, a water inlet hose 181 connected with the water inlet end of the water pump 19 is arranged at the lowest position of the river bed along with the continuous low temperature (-15 ℃ to-20 ℃), the strong brine in the water receiving hopper 17 is discharged into the river bed, the river bed is frozen after being continuously placed for 2 to 5 days, a water outlet hose 182 connected with the water outlet end of the water pump 19 is arranged on the formed ice layer 24 at the lowest layer, the strong brine which is not frozen under the ice layer 24 at the lowest layer is completely pumped to the ice layer 24 at the lowest layer through the water pump 19, the depth of the strong brine on the upper surface of the ice layer 24 is controlled to be 5 to 10cm to prevent the ice surface from sinking, the ice layer 24 at the second layer is formed after being continuously placed for 3 to 6 days, the water inlet hose 181 and the water outlet hose 182 connected with the water pump 19 are taken down, then connecting the taken-down water outlet hose 182 with the water inlet end of the water pump 19 to serve as a water inlet hose 181, arranging a water outlet hose 182 connected with the water outlet end of the water pump 19 on the second ice layer 24, pumping the unfrozen concentrated brine under the second ice layer 24 to the second ice layer 24 through the water pump 19 to freeze continuously, repeating the process until the uppermost ice layer 24 which does not pass through the supporting member 21 is formed at the top end of the supporting member 21, laying a layer of black heat-insulating and water-proof foamed plastic cloth on the surface of the uppermost ice layer 24, folding the plastic cloth around to form a barrier, pumping the unfrozen concentrated brine under the uppermost ice layer 24 to the surface of the plastic cloth and then collecting, wherein the TDS of the concentrated brine is 283.1g/L;

f. and (3) evaporation and crystallization: evaporating and crystallizing the concentrated brine gathered in the plastic cloth under the blowing of cold wind;

g. ice-lump water: when the spring comes and the temperature rises gradually, the gate 14 is opened, the ice blocks in the water tank 1 and the ice layer 24 of the lake 20 are melted, and fresh water is formed and gathered in the lake 20;

h. and (3) continuing evaporation and crystallization: the salt content in the plastic cloth is crystallized, but a small amount of thick brackish water still exists, and as the ice water content in the lake 20 increases, part of ice blocks which are not melted float with the supporting pieces 21 (the supporting pieces 21 form a floating net due to the rope traction), and the plastic cloth and the thick brackish water therein are supported to continue to evaporate under the spring light and even in summer until the plastic cloth is dried to become dry salt blocks.

Finally, collecting the plastic cloth and the salt in the plastic cloth to obtain 1098kg of salt, wherein the sodium chloride accounts for 98%, the potassium chloride accounts for 1%, the magnesium sulfate accounts for 0.2%, and the potassium nitrate accounts for 0.8% through analysis, and the plastic cloth and the salt can be sold as industrial raw materials;

the TDS of the water in the treated lake 20 is 1.02g/L, and the treated lake can be used as agricultural water.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that numerous changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (9)

1. A natural freezing fluid pressure treatment device, characterized by: comprises a water tank (1), a water tank (4), a fluid pressure part (7) and a wall (10),

the water tank (1) is arranged at one side in the brackish water lake (20), one side of the water tank (1) close to the center of the lake (20) is provided with a plurality of small holes (2) from top to bottom, short through pipes (3) penetrating into the middle section of the water tank (1) are horizontally arranged in the small holes (2), wood plugs (31) are plugged at the outer sides of the short through pipes (3),

the water tank (4) is arranged at one side of the water tank (1) close to the center of the lake (20), a submersible pump (5) is arranged in the water tank (4), the submersible pump (5) is connected with a water outlet pipe (6) connected to the top end of the water tank (1),

the fluid pressure component (7) comprises three connecting ends, the lower end of the fluid pressure component is connected with the top end of the water outlet pipe (6), the left end and the right end of the fluid pressure component are respectively connected with a water tap (8) and a nozzle (9), the water tap (8) is used for injecting water into the water tank (1), the nozzle (9) is used for spraying water to the center direction of the lake (20),

the wall (10) is arranged in the lake (20) and is used for guiding the water discharged by the nozzle (9), a plurality of strip-shaped through holes (11) are vertically arranged in the middle of the wall (10), a plurality of fins (12) which incline towards the upper part of the outer side are arranged at the two sides of the wall (10), a guide plate (13) is arranged at the top end of the wall (10),

and a gate (14) is arranged on one side of the bottom edge of the water tank (4).

2. A natural freezing fluid pressure treatment apparatus as claimed in claim 1, wherein: a primary filtering device is arranged at the gate (14), and a secondary filtering device (71) is arranged at the joint of the water outlet pipe (6) and the fluid pressure component (7).

3. A natural freezing fluid pressure treatment apparatus as claimed in claim 1, wherein: the water tank (1) is internally provided with a support rod (15), and the support rod (15) is provided with a plurality of horizontal support plates (16).

4. A natural freezing fluid pressure treatment apparatus as claimed in claim 3, wherein: the support rod (15) is made of metal.

5. A natural freezing fluid pressure treatment apparatus as claimed in claim 1, wherein: the lake (20) is internally provided with supporting pieces (21) which are partially inserted into the bottom of the lake at intervals, the supporting pieces (21) are provided with fan blades (22) at intervals from top to bottom, and the supporting pieces (21) are mutually connected through connecting pieces (23).

6. A natural freezing fluid pressure treatment apparatus as claimed in claim 1, wherein: the width of the fin plate (12) is gradually increased from top to bottom, and a water receiving bucket (17) is arranged below the fin plate (12) at the lowest part.

7. A natural freezing fluid pressure treatment construction process is characterized in that: the method comprises the following steps:

a. the water tank (1) is naturally frozen after being filled with water: at low temperature, opening a gate (14), allowing water in a lake (20) to enter a water tank (4), switching a fluid pressure component (7) to a water outlet of a faucet (8), starting a submersible pump (5), injecting water with a certain depth into a water tank (1) until the lowest short through pipe (3) is submerged and the upper adjacent short through pipe (3) is close, freezing the water surface after a period of time under natural conditions, continuously injecting water with a certain depth into the water tank (1) until one short through pipe (3) is submerged and the upper adjacent short through pipe (3) is close, freezing the water surface after a period of time under natural conditions, and repeating the above processes until the water tank (1) is full of water or the water in the lake (20) is pumped out, so that a plurality of layers of ice blocks are formed in the water tank (1);

b. providing a support (21): the supporting pieces (21) are arranged in the lake (20) at intervals, and the bottoms of the supporting pieces (21) are placed at the bottom of the lake (20);

c. collecting unfrozen water: after a period of time, closing the gate (14), taking out the wooden plug (31) on the outer side of the short through pipe (3), and collecting unfrozen strong brine in the water tank (4) after flowing out of the strong brine under the ice layer;

d. spraying water and freezing: switching the fluid pressure part (7) to a nozzle (9) to discharge water, starting the submersible pump (5), spraying strong brine in the water tank (4) onto a wall (10) in a lake (20), forming an ice surface on the surface of the fin plate (12), further concentrating the strong brine, and allowing unfrozen strong brine to flow downwards from a perforation (11) of the wall (10) to a water receiving hopper (17) at the bottom along the inclined fin plate (12);

e. the water pump (19) pumps water: arranging a water inlet hose (181) connected with the water inlet end of a water pump (19) at the lowest depression of the riverbed, discharging strong brine in a water receiving hopper (17) into the riverbed to continue freezing, arranging a water outlet hose (182) connected with the water outlet end of the water pump (19) on the formed lowest ice layer (24), pumping the strong brine which is not frozen under the lowest ice layer (24) to the lowest ice layer (24) through the water pump (19) to continue freezing to form a second ice layer (24), and taking down the water inlet hose (181) and the water outlet hose (182) connected with the water pump (19), then connecting the taken-down water outlet hose (182) with the water inlet end of a water pump (19) to serve as a water inlet hose (181), arranging the water outlet hose (182) connected with the water outlet end of the water pump (19) on the ice layer (24) of the second layer, pumping the unfrozen strong brine under the ice layer (24) of the second layer to the ice layer (24) of the second layer through the water pump (19) to freeze continuously, repeating the process until the ice layer (24) of the uppermost layer which does not pass through the supporting piece (21) is formed at the top end of the supporting piece (21), laying a layer of plastic cloth on the surface of the ice layer (24) of the uppermost layer, folding the plastic cloth around to form a fence, and pumping the unfrozen strong brine under the ice layer (24) of the uppermost layer to the surface of the plastic cloth to be gathered;

f. evaporation and crystallization: evaporating and crystallizing concentrated brine gathered in the plastic cloth under natural conditions;

g. ice-agglomerated water: the sluice gate (14) is opened, and after the temperature is raised, ice blocks in the water tank (1) and an ice layer (24) of the lake (20) are melted.

8. A natural freezing fluid pressure treatment construction process according to claim 7, wherein: in the step e, the concentrated salt water pumped to the ice layer (24) is deep to 5-10cm so as to prevent the ice layer (24) from collapsing.

9. A natural freezing fluid pressure treatment construction process according to claim 7, wherein: in the step e, the plastic cloth is black heat-insulating and waterproof foamed plastic cloth.

Images