CN107935293B - High-salt wastewater treatment equipment - Google Patents
High-salt wastewater treatment equipment Download PDFInfo
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- CN107935293B CN107935293B CN201810013141.5A CN201810013141A CN107935293B CN 107935293 B CN107935293 B CN 107935293B CN 201810013141 A CN201810013141 A CN 201810013141A CN 107935293 B CN107935293 B CN 107935293B
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 239000002351 wastewater Substances 0.000 claims abstract description 28
- 239000007787 solid Substances 0.000 claims abstract description 18
- 239000013078 crystal Substances 0.000 claims abstract description 12
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 150000003839 salts Chemical class 0.000 claims abstract description 7
- 238000003756 stirring Methods 0.000 claims description 15
- 239000000498 cooling water Substances 0.000 claims description 9
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000001704 evaporation Methods 0.000 description 14
- 230000008020 evaporation Effects 0.000 description 12
- 238000009835 boiling Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000005457 optimization Methods 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000011550 stock solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/041—Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F2001/5218—Crystallization
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention discloses high-salt wastewater treatment equipment, which comprises a raw water tank, a feed pump, an MVR evaporator, a discharge pump, a crystal slurry tank A, a centrifugal machine A, an incinerator, an evaporator, a centrifugal machine B, a crystal slurry tank B and a solid storage tank, wherein a heating pipeline is arranged in the evaporator, and the evaporator is provided with a water inlet, a discharge port and a secondary steam outlet; raw water tank connects MVR evaporimeter, MVR evaporimeter's delivery port connects brilliant thick liquid jar A, centrifuge A is connected to brilliant thick liquid jar A's discharge gate, centrifuge A's solid discharge port is connected and is burnt burning furnace, liquid discharge port is connected the water inlet, burn the steam outlet connection heating pipeline entry of burning furnace, centrifuge B is connected through brilliant thick liquid jar B back to the discharge gate, centrifuge B's solid discharge port is connected the solid holding vessel, centrifuge B's liquid discharge port is connected the water inlet, secondary steam outlet, heating pipeline's exit linkage MVR evaporimeter. Through adopting MVR evaporimeter, this equipment can be efficient handle high salt waste water, and the energy consumption is little.
Description
Technical Field
The invention relates to the technical field of wastewater treatment equipment, in particular to high-salt wastewater treatment equipment.
Background
In the evaporation treatment process of the high-salt wastewater, the boiling point of the high-salt wastewater is increased along with the increase of the salt concentration. The concentration of salt in the wastewater can reach the crystallization requirement, the temperature to be reached is high, and the consumption capability is high.
The prior art generally heats and evaporates the waste water through steam, and simultaneously preheats the waste water through secondary steam to achieve the purpose of energy conservation. However, the energy consumed is large, mainly because the steam utilization rate is not high when the boiling point of the wastewater is not high in the initial stage of wastewater evaporation. This indiscriminate processing method is serious in energy waste.
Disclosure of Invention
Aiming at the defects of the prior art, the invention develops high-salt wastewater treatment equipment which can efficiently treat high-salt wastewater and has low energy consumption.
The technical scheme for solving the technical problems is as follows: in one aspect, the embodiment of the invention provides high-salt wastewater treatment equipment, which comprises a raw water tank, a feed pump, an MVR evaporator, a discharge pump, a crystal slurry tank A, a centrifuge A, an incinerator, an evaporator, a centrifuge B, a temporary storage tank, a crystal slurry tank B and a solid storage tank, wherein a heating pipeline is arranged in the evaporator, and the evaporator is provided with a water inlet, a discharge port and a secondary steam outlet; the water inlet of former water pitcher is connected the waste water source, the water inlet of MVR evaporimeter is connected through the charge-in pump to the delivery port of former water pitcher, the delivery port of MVR evaporimeter passes through discharge pump and connects brilliant thick liquid jar A, centrifuge A is connected to brilliant thick liquid jar A's discharge gate, incinerator is connected to centrifuge A's solid discharge port, the water inlet is connected to liquid discharge port, incinerator's steam outlet connection heating pipeline entry, centrifuge B is connected through behind the brilliant thick liquid jar B to the discharge gate, centrifuge B's solid discharge port is connected the solid holding vessel, centrifuge B's liquid discharge port is connected the water inlet, secondary steam outlet, heating pipeline's exit linkage MVR evaporimeter. Evaporating the wastewater by an MVR evaporator, crystallizing and centrifuging, incinerating the obtained solid to remove organic impurities, evaporating the obtained liquid by the evaporator, crystallizing and centrifuging to finish the treatment.
As optimization, the MVR evaporator comprises a temporary storage tank, a heat exchanger, a separator, a condensate tank and steam heating equipment, wherein the separator is arranged above the temporary storage tank, the bottom of the separator is communicated with the temporary storage tank, the bottom of the temporary storage tank is communicated with the bottom of the heat exchanger, a circulating pump is arranged between the temporary storage tank and the heat exchanger, a heating pipeline is arranged in the heat exchanger, an inlet of the heating pipeline is connected with an air outlet of the steam heating equipment, an outlet of the heating pipeline is connected with the condensate tank, a steam outlet is arranged at the top of the heat exchanger and is connected with the separator, a secondary steam outlet is arranged at the top of the separator, and the secondary steam outlet is connected with an air inlet of the steam heating equipment; the water outlet of the condensate tank is connected with the temporary storage tank, the top of the condensate tank is provided with a condensate air outlet, and the secondary steam outlet and the outlet of the heating pipeline are connected with the condensate tank; the feed inlet and the discharge outlet of the temporary storage tank are respectively connected with a feed pump and a discharge pump.
As optimization, the MVR evaporator further comprises a preheater, wherein a cold water channel and a hot water channel are arranged in the preheater, the cold water channel is arranged between the feed inlet of the temporary storage tank and the feed pump, and the hot water channel is arranged between the water outlet of the condensate tank and the temporary storage tank. As optimization, the steam heating equipment comprises a compressor a, a compressor B, a valve a, a valve B and a valve C, wherein a secondary steam outlet is respectively connected with an air inlet of the compressor a and an air inlet of the valve a, an air outlet of the compressor a is connected with an inlet of a heating pipeline after passing through the valve C, an air outlet of the valve a is connected with an air inlet of the compressor B, an air outlet of the compressor B is connected with an inlet of the heating pipeline, and a valve B is arranged between an air outlet of the compressor a and an air inlet of the compressor B.
As optimization, the compressor is any one of a roots type compressor, a single-machine high-speed centrifugal compressor and a single-machine low-speed centrifugal fan compressor.
Preferably, the height of the separator is higher than that of the heat exchanger, and the cross-sectional area of the separator is larger than that of the heat exchanger.
As optimization, the magma tank A and the magma tank B comprise tank bodies with double-layer structures, wherein the tank bodies comprise inner containers and shells sleeved outside the inner containers; the upper disc of the inner container of the tank body is provided with a spiral cooling water pipe, the cooling water pipe is a flat pipe, and the wide edge of the cooling water pipe is tightly attached to the outer wall of the inner container; the tank body is internally provided with a stirring device, a stirring shaft of the stirring device is coaxial with the tank body, the stirring shaft penetrates through the tank body and extends to the inside of the liner, and the stirring shaft is provided with a plurality of layers of stirrers.
The effects provided in the summary of the invention are merely effects of embodiments, not all effects of the invention, and the above technical solution has the following advantages or beneficial effects:
1. through adopting MVR evaporimeter, this equipment can be efficient handle high salt waste water, and the energy consumption is little.
2. After the wastewater enters the heat exchanger, steam is formed through heating of the heating pipeline, part of the steam enters the separator and then becomes liquid, part of the steam keeps in a steam state, the liquid enters the temporary storage tank, and the steam enters the heat exchanger to heat the stock solution after being heated by the heating equipment. The potential of the steam is fully utilized, the waste steam is utilized, and the whole evaporation process is not required to be filled with steam except for the operation of starting a machine.
3. By arranging the preheater, the heat energy is fully utilized, and the wastewater treatment efficiency is improved.
4. The heat source is provided by the compressed air of the compressor, compared with the traditional evaporator, the temperature difference is smaller, the mild evaporation can be achieved, and the product quality is greatly improved. When the waste water begins to evaporate, the valve A and the valve B are closed, the valve C is opened, and the temperature required by the evaporation of the waste water can be reached only by operating the compressor A; when the boiling point of the wastewater is increased, the valve B is closed, the valve A and the valve C are opened, and the compressor A and the compressor B are operated in parallel; when the wastewater reaches a high boiling point, the valve A and the valve C are closed, the valve B is opened, and the compressor A and the compressor B are connected in series. The two compressors are arranged, and the series-parallel operation of the two compressors is controlled, so that the evaporation requirements of different boiling points can be met, and the energy waste is reduced.
5. Through setting up the high heat exchanger that is higher than of separator, the cross sectional area of separator is greater than the cross sectional area of heat exchanger, and the steam that waste water heating evaporation produced gets into behind the separator pressure reduction, temperature reduction, liquid precipitation accomplishes gas-liquid separation.
6. Through setting up bilayer structure's brilliant thick liquid jar A, brilliant thick liquid jar B jar body, can guarantee under the prerequisite of cooling effect, make condenser tube and thick liquid keep apart, prevent scale deposit on condenser tube, improve its cooling efficiency, can also conveniently regulate and control cooling rate and the effect of brilliant thick liquid.
Drawings
Fig. 1 is a schematic diagram of an embodiment of the present invention.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below with reference to the following detailed description and the accompanying drawings. The following disclosure provides many different embodiments, or examples, for implementing different structures of the invention. In order to simplify the present disclosure, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. It should be noted that the components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted so as to not unnecessarily obscure the present invention.
FIG. 1 shows an embodiment of the present invention, as shown in the drawing, a high salt wastewater treatment apparatus, comprising a raw water tank 1, a feed pump 2, an MVR evaporator, a discharge pump 6, a crystal slurry tank A9, a centrifuge A11, an incinerator 21, an evaporator 8, a centrifuge B112, a temporary storage tank 18, a crystal slurry tank B91 and a solid storage tank 12, wherein a heating pipeline 8-1 is arranged in the evaporator 8, and the evaporator 8 is provided with a water inlet 8-2, a discharge port 8-3 and a secondary steam outlet 8-4; the water inlet of former water pitcher 1 is connected the waste water source, the water outlet of former water pitcher 1 passes through feed pump 2 and connects the water inlet of MVR evaporimeter, the delivery port of MVR evaporimeter passes through discharge pump 6 and connects brilliant thick liquid jar A9, centrifuge A11 is connected to the discharge gate of brilliant thick liquid jar A9, the solid discharge port of centrifuge A11 is connected and is burnt burning furnace 21, water inlet 8-2 is connected to the liquid discharge port, the steam outlet of burning furnace 21 is connected the inlet of heating pipeline 8-1, discharge gate 8-3 passes through brilliant thick liquid jar B91 and connects centrifuge B112, the solid discharge port of centrifuge B112 is connected solid holding vessel 12, the liquid discharge port of centrifuge B112 is connected water inlet 8-2, secondary steam outlet 8-4, the exit linkage MVR evaporimeter of heating pipeline 8-1.
The wastewater is evaporated by an MVR evaporator and then crystallized and centrifuged, the obtained solid is incinerated to remove organic impurities, and the obtained liquid is evaporated by an evaporator 8 and then crystallized and centrifuged to finish the treatment. Through adopting MVR evaporimeter, this equipment can be efficient handle high salt waste water, and the energy consumption is little.
The MVR evaporator comprises a temporary storage tank 7, a heat exchanger 4, a separator 5, a condensate tank 14 and a steam heating device 10, wherein the separator 5 is arranged above the temporary storage tank 7, the bottom of the separator 5 is communicated with the temporary storage tank 7, the bottom of the temporary storage tank 7 is communicated with the bottom of the heat exchanger 4, a circulating pump 19 is arranged between the temporary storage tank 7 and the heat exchanger 4, a heating pipeline 4-1 is arranged in the heat exchanger 4, an inlet of the heating pipeline 4-1 is connected with an air outlet of the steam heating device 10, an outlet of the heating pipeline 4-1 is connected with the condensate tank 14, a steam outlet 4-2 is arranged at the top of the heat exchanger 4, the steam outlet 4-2 is connected with the separator 5, a secondary steam outlet 5-1 is arranged at the top of the separator 5-1, and the secondary steam outlet 5-1 is connected with an air inlet of the steam heating device 10; the water outlet of the condensate tank 14 is connected with a temporary storage tank 18, the top of the condensate tank 14 is provided with a condensate outlet 14-1, and the outlets of the secondary steam outlet 8-4 and the heating pipeline 8-1 are connected with the condensate tank 14; the feed inlet and the discharge outlet of the temporary storage tank 7 are respectively connected with the feed pump 2 and the discharge pump 6.
After the wastewater enters the heat exchanger 4, steam is formed through heating of the heating pipeline 4-1, part of the steam enters the separator 5 and then becomes liquid, part of the steam keeps in a steam state, the liquid enters the temporary storage tank 20, and the steam enters the heat exchanger 4 after being heated by the heating equipment 10 to heat the stock solution. The potential of the steam is fully utilized, the waste steam is utilized, and the whole evaporation process is not required to be filled with steam except for the operation of starting a machine.
The MVR evaporator further comprises a preheater 3, a cold water channel 3-1 and a hot water channel 3-2 are arranged in the preheater 3, the cold water channel 3-1 is arranged between a feed inlet of the temporary storage tank 7 and the feed pump 2, and the hot water channel 3-2 is arranged between a water outlet of the condensate tank 14 and the temporary storage tank 18. By arranging the preheater 3, the heat energy is fully utilized, and the wastewater treatment efficiency is improved.
The steam heating device 10 comprises a compressor A101, a compressor B102, a valve A103, a valve B104 and a valve C105, wherein a secondary steam outlet 5-1 is respectively connected with air inlets of the compressor A101 and the valve A103, an air outlet of the compressor A101 is connected with an inlet of a heating pipeline 4-1 after passing through the valve C105, an air outlet of the valve A103 is connected with an air inlet of the compressor B102, an air outlet of the compressor B102 is connected with an inlet of the heating pipeline 4-1, and a valve B104 is arranged between an air outlet of the compressor A101 and the air inlet of the compressor B102.
The heat source is provided by the compressed air of the compressor, compared with the traditional evaporator, the temperature difference is smaller, the mild evaporation can be achieved, and the product quality is greatly improved. When the waste water begins to evaporate, the valve A103 and the valve B104 are closed, the valve C105 is opened, and the temperature required by the evaporation of the waste water can be reached only by operating the compressor A101; when the boiling point of the wastewater is increased, the valve B104 is closed, the valve A103 and the valve C105 are opened, and the compressor A101 and the compressor B102 are operated in parallel; when the wastewater reaches a high boiling point, the valve A103 and the valve C105 are closed, the valve B104 is opened, and the compressor A101 and the compressor B102 are connected in series. The two compressors are arranged, and the series-parallel operation of the two compressors is controlled, so that the evaporation requirements of different boiling points can be met, and the energy waste is reduced.
The compressor is any one of a Roots type compressor, a single-machine high-speed centrifugal compressor and a single-machine low-speed centrifugal fan compressor.
The height of the separator 5 is higher than the heat exchanger 4, and the cross-sectional area of the separator 5 is larger than the cross-sectional area of the heat exchanger 4.
Through setting up the high heat exchanger 4 that is higher than of separator 5, the cross sectional area of separator 5 is greater than the cross sectional area of heat exchanger 4, and the steam that waste water heating evaporation produced gets into separator 5 back pressure and reduces, temperature reduction, and the liquid separates out, accomplishes gas-liquid separation.
The crystal slurry tank A9 and the crystal slurry tank B91 comprise tank bodies with double-layer structures, and each tank body comprises an inner container and a shell sleeved outside the inner container; the upper disc of the inner container of the tank body is provided with a spiral cooling water pipe, the cooling water pipe is a flat pipe, and the wide edge of the cooling water pipe is tightly attached to the outer wall of the inner container; the tank body is internally provided with a stirring device, a stirring shaft of the stirring device is coaxial with the tank body, the stirring shaft penetrates through the tank body and extends to the inside of the liner, and the stirring shaft is provided with a plurality of layers of stirrers.
Through setting up bilayer structure's brilliant thick liquid jar A9, brilliant thick liquid jar B91 jar body, can guarantee under the prerequisite of cooling effect, make condenser tube and thick liquid keep apart, prevent scale deposit on condenser tube, improve its cooling efficiency, can also conveniently regulate and control cooling rate and the effect of brilliant thick liquid.
While the foregoing description of the embodiments of the present invention has been presented with reference to the drawings, it is not intended to limit the scope of the invention, but rather, it is apparent that various modifications or variations can be made by those skilled in the art without the need for inventive work on the basis of the technical solutions of the present invention.
Claims (4)
1. A high-salt wastewater treatment device is characterized in that: the device comprises a raw water tank (1), a feed pump (2), an MVR evaporator, a discharge pump (6), a crystal slurry tank A (9), a centrifugal machine A (11), an incinerator (21), an evaporator (8), a centrifugal machine B (112), a temporary storage tank (18), a crystal slurry tank B (91) and a solid storage tank (12), wherein a heating pipeline (8-1) is arranged in the evaporator (8), and the evaporator (8) is provided with a water inlet (8-2), a discharge port (8-3) and a secondary steam outlet (8-4); the water inlet of the raw water tank (1) is connected with a wastewater source, the water outlet of the raw water tank (1) is connected with the water inlet of the MVR evaporator through the feed pump (2), the water outlet of the MVR evaporator is connected with the magma tank A (9) through the discharge pump (6), the discharge port of the magma tank A (9) is connected with the centrifugal machine A (11), the solid discharge port of the centrifugal machine A (11) is connected with the incinerator (21), the liquid discharge port is connected with the water inlet (8-2), the steam outlet of the incinerator (21) is connected with the inlet of the heating pipeline (8-1), the discharge port (8-3) is connected with the centrifugal machine B (112) after passing through the magma tank B (91), the solid discharge port of the centrifugal machine B (112) is connected with the solid storage tank (12), the liquid discharge port of the centrifugal machine B (112) is connected with the water inlet (8-2), and the outlets of the secondary steam outlet (8-4) and the heating pipeline (8-1) are connected with the MVR evaporator;
the MVR evaporator comprises a temporary storage tank (7), a heat exchanger (4), a separator (5), a condensate tank (14) and steam heating equipment (10), wherein the separator (5) is arranged above the temporary storage tank (7), the bottom of the separator (5) is communicated with the temporary storage tank (7), the bottom of the temporary storage tank (7) is communicated with the bottom of the heat exchanger (4), a circulating pump (19) is arranged between the temporary storage tank (7) and the heat exchanger (4), a heating pipeline (4-1) is arranged in the heat exchanger (4), an inlet of the heating pipeline (4-1) is connected with an air outlet of the steam heating equipment (10), an outlet of the heating pipeline (4-1) is connected with the condensate tank (14), a steam outlet (4-2) is arranged at the top of the heat exchanger (4), the steam outlet (4-2) is connected with the separator (5), a secondary steam outlet (5-1) is arranged at the top of the separator (5), and the secondary steam outlet (5-1) is connected with an air inlet of the steam heating equipment (10); the water outlet of the condensate tank (14) is connected with the temporary storage pool (18), the top of the condensate tank (14) is provided with a condensate outlet (14-1), and the outlets of the secondary steam outlet (8-4) and the heating pipeline (8-1) are connected with the condensate tank (14); the feed inlet and the discharge outlet of the temporary storage tank (7) are respectively connected with a feed pump (2) and a discharge pump (6);
the steam heating equipment (10) comprises a compressor A (101), a compressor B (102), a valve A (103), a valve B (104) and a valve C (105), wherein a secondary steam outlet (5-1) is respectively connected with the air inlets of the compressor A (101) and the valve A (103), an air outlet of the compressor A (101) is connected with an inlet of a heating pipeline (4-1) after passing through the valve C (105), an air outlet of the valve A (103) is connected with an air inlet of the compressor B (102), an air outlet of the compressor B (102) is connected with an inlet of the heating pipeline (4-1), and a valve B (104) is arranged between an air outlet of the compressor A (101) and the air inlet of the compressor B (102);
the crystal slurry tank A (9) and the crystal slurry tank B (91) comprise tank bodies with double-layer structures, wherein each tank body comprises an inner container and a shell sleeved outside the inner container; the upper disc of the inner container of the tank body is provided with a spiral cooling water pipe, the cooling water pipe is a flat pipe, and the wide edge of the cooling water pipe is tightly attached to the outer wall of the inner container; the tank body is internally provided with a stirring device, a stirring shaft of the stirring device is coaxial with the tank body, the stirring shaft penetrates through the tank body and extends to the inside of the liner, and the stirring shaft is provided with a plurality of layers of stirrers.
2. The high-salt wastewater treatment device according to claim 1, wherein the MVR evaporator further comprises a preheater (3), a cold water channel (3-1) and a hot water channel (3-2) are arranged in the preheater (3), the cold water channel (3-1) is arranged between a feed inlet of the temporary storage tank (7) and the feed pump (2), and the hot water channel (3-2) is arranged between a water outlet of the condensate tank (14) and the temporary storage tank (18).
3. The high-salinity wastewater treatment apparatus according to claim 1, wherein the compressor is any one of a roots compressor, a single high-speed centrifugal compressor, and a single low-speed centrifugal fan compressor.
4. A high salt wastewater treatment plant according to claim 1, characterized in that the separator (5) has a higher height than the heat exchanger (4), the cross-sectional area of the separator (5) being larger than the cross-sectional area of the heat exchanger (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013141.5A CN107935293B (en) | 2018-01-08 | 2018-01-08 | High-salt wastewater treatment equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013141.5A CN107935293B (en) | 2018-01-08 | 2018-01-08 | High-salt wastewater treatment equipment |
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| CN107935293A CN107935293A (en) | 2018-04-20 |
| CN107935293B true CN107935293B (en) | 2024-03-12 |
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| CN113735358B (en) * | 2021-09-23 | 2023-03-24 | 济南上华科技有限公司 | High salt waste water evaporation crystallization zero release equipment |
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