CN116750931A - Sewage treatment device and sewage treatment method thereof - Google Patents
Sewage treatment device and sewage treatment method thereof Download PDFInfo
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- CN116750931A CN116750931A CN202311019254.3A CN202311019254A CN116750931A CN 116750931 A CN116750931 A CN 116750931A CN 202311019254 A CN202311019254 A CN 202311019254A CN 116750931 A CN116750931 A CN 116750931A
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- mvr evaporator
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- 239000010865 sewage Substances 0.000 title claims abstract description 84
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000002994 raw material Substances 0.000 claims abstract description 35
- 238000002425 crystallisation Methods 0.000 claims abstract description 31
- 230000008025 crystallization Effects 0.000 claims abstract description 31
- 150000002500 ions Chemical class 0.000 claims abstract description 10
- 239000007788 liquid Substances 0.000 claims description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 30
- 239000013078 crystal Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 239000012452 mother liquor Substances 0.000 claims description 15
- 230000007246 mechanism Effects 0.000 claims description 14
- 238000001704 evaporation Methods 0.000 claims description 11
- 230000008020 evaporation Effects 0.000 claims description 11
- 239000002245 particle Substances 0.000 claims description 11
- 238000011010 flushing procedure Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 238000009833 condensation Methods 0.000 claims description 6
- 230000005494 condensation Effects 0.000 claims description 6
- 238000004064 recycling Methods 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 239000002351 wastewater Substances 0.000 claims description 4
- 238000010926 purge Methods 0.000 claims 3
- 238000004065 wastewater treatment Methods 0.000 claims 1
- 210000003298 dental enamel Anatomy 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000012267 brine Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The application relates to the field of sewage treatment and discloses a sewage treatment device and a sewage treatment method thereof, wherein the device comprises a pretreatment tank, a raw material tank, a preheating plate type heat exchanger, an MVR evaporator, a tubular heater, a crystallization enamel kettle and a centrifugal separator; the preheating module is connected with the raw material pool through a raw material pipeline, and a feed pump is arranged on the raw material pipeline; the MVR evaporator is connected with the preheating module; the heater is connected with the MVR evaporator; the crystallization tank is connected with a discharge port of the MVR evaporator, and a discharge pump is arranged on the discharge pipe; the centrifugal separationThe off-machine is connected with a discharge port of the crystallization tank; the application has reasonable design and convenient use, can realize sewage treatment, in particular Na + Or/and Ca 2+ The sewage treatment with high ion content can reach the emission standard and obtain the sewage containing Na + Or/and Ca 2+ And the crystallization of ions can be used for other working procedures or selling, and the cost of sewage treatment is reduced.
Description
Technical Field
The application relates to the field of sewage treatment, in particular to a sewage treatment device and a sewage treatment method thereof.
Background
In chemical enterprises, strict requirements are imposed on the discharge of sewage, such as Na + The sewage with higher content can not be directly discharged, and Na of the sewage is needed + Treating to reduce Na + The content can be discharged after the content; while lowering Na + The content is generally obtained by evaporation, for example, by directly using an MVR evaporator, but if only an MVR evaporator device is used, the energy consumption is relatively high and the added value is relatively small.
Disclosure of Invention
Therefore, in order to solve the defects, the application provides a sewage treatment device with reasonable design and convenient use and a sewage treatment method thereof, and the application can realize sewage treatment, in particular Na + Or/and Ca 2+ The sewage treatment with high ion content can reach the emission standard and obtain the sewage containing Na + Or/and Ca 2+ And the crystallization of ions can be used for other working procedures or selling, and the cost of sewage treatment is reduced.
Concretely, the sewage treatment device comprises a raw material pool, a preheating module, an MVR evaporator, a heater, a crystallization tank and a centrifugal separator; the raw material pool is used for containing liquid to be treated; the preheating module is used for preheating the liquid to be treated, and is connected with the raw material pool through a raw material pipeline, and a feed pump is arranged on the raw material pipeline; the MVR evaporator is used for separating liquid to be treated and is connected with the preheating module through a feeding pipeline; the heater is used for supplying heat to the MVR evaporator and is connected with the MVR evaporator; the crystallization tank is used for receiving liquid treated by the MVR evaporator, and the liquid contains crystals; the crystallization tank is connected with a discharge port of the MVR evaporator through a discharge pipe, and a discharge pump is arranged on the discharge pipe; the centrifugal separator is used for separating crystals from liquid and is connected with a discharge hole of the crystallization tank through a connecting pipe.
Optionally, a concentrated solution outlet in the MVR evaporator is connected with a circulating pipeline, the circulating pipeline flows through the heater, and the circulating pipeline is provided with a strong circulating pump; the concentrated solution is heated by a strong circulating pump to a heater and then is recycled to the MVR evaporator, a steam outlet of the MVR evaporator is connected with the heater through a steam pipeline, and a steam compressor is arranged on the steam pipeline. And the anti-time-saving valves are led out from the pipelines at the inlet end and the outlet end of the vapor compressor.
Optionally, the preheating module at least comprises a first preheater and a second preheater, wherein the first preheater is connected with the second preheater through an intermediate connecting pipe, and the first preheater is connected with the raw material pool through a raw material pipeline.
Optionally, the preheating module further comprises a condensate water tank, an outlet of the condensate water tank is connected with the first preheater through a first condensate water pipe, and an inlet of the condensate water tank is connected with the second preheater through a second condensate water pipe;
a condensate pump and a flowmeter are arranged on the first condensate pipe;
and a condensation water port of the heater is communicated with the condensation water tank through a pipeline.
Optionally, the liquid outlet of the centrifugal separator is connected with a mother liquor tank, the mother liquor tank is communicated with the raw material tank through a mother liquor pipe, and a mother liquor pump is arranged on the mother liquor pipe.
Optionally, the sewage treatment device further comprises an anti-blocking mechanism, and the anti-blocking mechanism is installed at the concentrated solution outlet of the MVR evaporator or/and between the MVR evaporator and the discharge pump.
Optionally, the anti-blocking mechanism is installed on an original pipeline, the original pipeline is a discharging pipe or a concentrated liquid pipe, the anti-blocking mechanism comprises a connecting pipe and a filter pipe, the filter pipe is installed in the connecting pipe, a circulation gap is formed between the outer wall of the filter pipe and the outer wall of the connecting pipe, and a plurality of filter holes are formed in the pipe wall of the filter pipe;
the inlet of the filter tube is communicated with the original pipeline through a valve, and the outlet of the filter tube is connected with the sewage disposal tube through a valve;
the circulation gap is provided with a discharge hole and a drain pipe with a valve, wherein the discharge hole is communicated with the discharge pump.
Optionally, the dirt cleaning pipe is provided with a medium port for inputting medium into the filter pipe for back flushing.
Optionally, an inlet for introducing medium into the filter tube for back flushing is arranged at the upper part of the filter tube.
A sewage treatment method adopts the sewage treatment device to treat sewage, wherein the sewage contains Na + Or/and Ca 2+ Waste water of ions; the sewage treatment method comprises the following steps:
the sewage contained in the raw material pool is sent into a preheating module through a feed pump to be preheated;
the preheated sewage enters an MVR evaporator for evaporation treatment;
the evaporated material after the evaporation treatment of the MVR evaporator is sent into a crystallization tank through a discharge pump;
and (3) feeding the materials in the crystallization tank into a centrifugal separator for centrifugal separation, storing the separated crystals, discharging the separated liquid after reaching an exhaust standard, and feeding the separated liquid into the raw material tank if the separated liquid does not reach the standard.
Optionally, the sewage treatment method further comprises the steps of,
and conveying the steam discharged by the MVR evaporator to the heater for recycling through the steam compressor, and conveying condensed water generated after the steam is condensed by the heater to a condensed water tank of the preheating module for heat exchange of the first preheater.
Optionally, if a blockage occurs between the MVR evaporator and the discharge pump or/and the discharge pump produces abnormal material shortage, the discharge pump is turned off, a valve at the feed end of the discharge pump and a valve in front of the inlet of the filter tube are closed, a valve of the clean tube is opened, clean water or high-pressure gas is filled into the filter tube through the clean tube to flush the filter tube, large-particle crystals blocking the filter holes are scattered or melted, the flushed material is discharged from the drain tube, after repeated flushing is performed until the blockage is solved, the valves of the clean tube and the drain tube are closed, the valve at the feed end of the discharge pump, the valve in front of the inlet of the filter tube and the discharge pump are opened, and sewage treatment is continued.
The application has the following advantages:
the application has reasonable design, is a sewage treatment device and a sewage treatment method thereof, and can realize sewage treatment, in particular Na + Or/and Ca 2+ The sewage treatment with high ion content can reach the emission standard and obtain the sewage containing Na + Or/and Ca 2+ And the crystallization of ions can be used for other working procedures or selling, and the cost of sewage treatment is reduced.
Meanwhile, the anti-blocking mechanism is reasonably designed, so that the problem that large-particle materials block the pump is solved, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic view of a sewage treatment apparatus according to the present application;
fig. 2 is a schematic structural view of the anti-blocking mechanism according to the present application.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present application and should not be construed as limiting the application.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
As described in the background art, in chemical enterprises, strict requirements are imposed on the discharge of sewage, such as Na + The sewage with higher content can not be directly discharged, and Na of the sewage is needed + Treating to reduce Na + The content can be discharged after the content is finished.
For the above reasons, in order for Na + The sewage with higher content reaches the discharge standard, and the present embodiment provides a sewage treatment apparatus, as shown in fig. 1, which includes a raw material tank 100, a preheating module 200, an mvr evaporator 500, a heater 400, a crystallization tank 600 and a centrifuge 800; the raw material tank 100 is used for containing liquid to be treated; the preheating module 200 is a plate heat exchanger for preheating the liquid to be treated, the preheating module 200 is connected with the raw material tank 100 through a raw material pipeline, and a feed pump 101 is installed on the raw material pipeline; the MVR evaporator 500 is used for separating liquid to be treated, and the MVR evaporator 500 is connected with the preheating module 200 through a feeding pipeline; the heater 400 is a tube type heater for supplying heat to the MVR evaporator 500, and the heater 400 is connected to the MVR evaporator 500; the crystallization tank 600 is used for receiving liquid processed by the MVR evaporator, wherein the liquid contains crystals; the crystallization tank 600 is a crystallization enamel kettle, and is connected with a discharge port of the MVR evaporator 500 through a discharge pipe, and a discharge pump 601 is arranged on the discharge pipe; the centrifugal separator 800 is used for separating crystals from a liquid, and the centrifugal separator 800 is connected to a discharge port of the crystallization tank 600 through a connection pipe.
Through the technical characteristics, the Na can be realized + The sewage with higher content is treated to reach the discharge standard, and Na-containing sewage can be obtained + The crystallization (NaCl crystallization) of the crystal, and the crystal can be used or sold for other procedures; in the using process, sewage contained in the raw material pool is sent into a preheating module through a feed pump for preheating; the preheated sewage enters an MVR evaporator for evaporation treatment; the evaporated material (including small particle crystals or liquid containing crystals) after evaporation treatment by the MVR evaporator is pumped into a crystallization tank through a discharge pump; and (3) feeding the materials in the crystallization tank into a centrifugal separator for centrifugal separation, storing the separated crystals, discharging the separated liquid after reaching an exhaust standard, and feeding the separated liquid into the raw material tank if the separated liquid does not reach the standard.
In order to supply heat to the MVR evaporator, in an embodiment, a circulation pipeline is connected to the concentrate outlet of the MVR evaporator 500, and the circulation pipeline flows through the heater 400, and is provided with a strong circulation pump 501; the concentrated solution is heated by the strong circulation pump 501 to the heater and then is recycled to the MVR evaporator for continuous evaporation treatment, and a steam outlet of the MVR evaporator is connected with the heater 400 through a steam pipeline, and the steam pipeline is provided with the steam compressor 401. And the anti-time-saving valves are led out from the pipelines at the inlet end and the outlet end of the vapor compressor. Through the technical characteristics, the MVR evaporator is heated, the evaporation efficiency of the MVR evaporator is improved, wherein the vapor exhausted by the MVR evaporator is about 85 ℃, and the temperature can be raised to about 103 ℃ after the vapor is compressed.
In order to achieve a gradual heating of the liquid to be treated, in an embodiment the pre-heating module 200 comprises at least a first pre-heater 201 and a second pre-heater 202, the first pre-heater being connected to the second pre-heater by an intermediate connection pipe, wherein the first pre-heater is connected to the raw material tank by a raw material pipe. After the liquid to be treated is heated for the second time by the first preheater and the second preheater, the raw liquid reaches 70-85 ℃ so as to facilitate the further treatment of the subsequent MVR evaporator.
In order to realize the recycling of heat and reduce energy consumption, in an embodiment, the preheating module further includes a condensate tank 300, an outlet of the condensate tank 300 is connected to the first preheater 201 through a first condensate pipe, and an inlet of the condensate tank 300 is connected to the second preheater 202 through a second condensate pipe; a condensate pump 301 and a flowmeter 3023 are mounted on the first condensate pipe; the condensation water port of the heater 400 is communicated with the condensation water tank 300 through a pipe. The steam exhausted by the MVR evaporator is conveyed to the heater for recycling through the steam compressor, and condensed water generated after the steam is condensed by the heater is conveyed to the condensed water tank of the preheating module for heat exchange of the first preheater, and the condensed water generated after the steam is condensed by the heater has a certain temperature and can be applied to the first preheater.
For subjecting the substandard liquid (liquid discharged from the centrifugal separator) to a reuse treatment; in one embodiment, the liquid outlet of the centrifuge 800 is connected to a mother liquor tank 700, and the mother liquor tank 700 is in communication with the raw material tank 100 through a mother liquor pipe, and a mother liquor pump 701 is installed on the mother liquor pipe.
Due to large-particle crystallization (e.g. large-particle Na + Crystallization and Ca may also be present in the wastewater 2+ So that it may further contain Ca 2+ Large grain crystallization with Na + And Ca 2+ Large particle combinations appear when agglomerated together. ) The impeller and the pipeline of the discharge pump can be frequently blocked by large-particle crystals or large-particle combinations, and only the pump head and the pipeline are removed for cleaning after the blockage, because the separator is internally provided with 90-degree high-temperature brine, operators can be easily scalded. The disassembling and cleaning time is long, the normal production of the whole device is influenced, and the whole process is complex, so in an embodiment, the sewage treatment device further comprises an anti-blocking mechanism, and the anti-blocking mechanism is arranged between a concentrated solution outlet of the MVR evaporator or/and the MVR evaporator and the discharging pump.
As shown in fig. 1, the anti-blocking mechanism 900 is installed between the MVR evaporator 900 and the discharge pump 601, and is installed on the discharge pipe. As shown in fig. 2, the anti-blocking mechanism 900 includes a connection pipe 901 and a filter pipe 902, the filter pipe 902 is installed in the connection pipe 901, a circulation gap 903 is formed between the outer wall of the filter pipe and the outer wall of the connection pipe, and a plurality of filter holes are formed on the pipe wall of the filter pipe 902;
the inlet of the filter tube 902 is communicated with the discharge tube through a valve, and the outlet of the filter tube is connected with the sewage disposal tube 906 through a valve;
the flow gap 903 is provided with a discharge opening 905 and a valved drain 904, wherein the discharge opening 905 communicates with the discharge pump 601 via a pipe.
The dirt cleaning pipe 906 is provided with a medium port 907 for inputting a medium to the filter pipe for back flushing, wherein the medium is gas or clear water.
An inlet 9021 for introducing medium into the filter tube for back flushing is provided at the upper part of the filter tube 902.
Through the above-mentioned technical characteristic can solve the problem that the discharge pump was blockked up, when using, if take place to block up or the discharge pump produces the lack of materials abnormal sound between MVR evaporimeter and discharge pump, then shut down the discharge pump, close the valve that is located the discharge pump feed end and close the valve before the filter tube entry, open the pipe valve that decontaminates, fill clear water or high-pressure gas to the filter tube through the pipe that decontaminates, wash the filter tube, will block up and the big granule crystal of filtration pore is flushable or melt, the material after the washing is discharged from the blow off pipe, wash repeatedly to solve the jam.
In another embodiment, a sewage treatment method is provided, wherein the sewage treatment device is used for sewage treatment, and the sewage contains Na + Or/and Ca 2+ Waste water of ions; the sewage treatment method comprises the following steps:
the sewage contained in the raw material pool is sent into a preheating module through a feed pump to be preheated;
the preheated sewage enters an MVR evaporator for evaporation treatment;
the evaporated material after the evaporation treatment of the MVR evaporator is sent into a crystallization tank through a discharge pump;
and (3) feeding the materials in the crystallization tank into a centrifugal separator for centrifugal separation, storing the separated crystals, discharging the separated liquid after reaching an exhaust standard, and feeding the separated liquid into the raw material tank if the separated liquid does not reach the standard.
In one embodiment, the sewage treatment method further comprises,
and conveying the steam discharged by the MVR evaporator to the heater for recycling through the steam compressor, and conveying condensed water generated after the steam is condensed by the heater to a condensed water tank of the preheating module for heat exchange of the first preheater.
In one embodiment, if a blockage occurs between the MVR evaporator and the discharge pump or/and the discharge pump produces abnormal material shortage, the discharge pump is turned off, a valve positioned at the feed end of the discharge pump and a valve positioned in front of the inlet of the filter tube are closed, a valve of the clean tube is opened, clean water or high-pressure gas is filled into the filter tube through the clean tube to flush the filter tube, large-particle crystals blocking and filtering holes are scattered or melted, the flushed material is discharged from the drain tube, after repeated flushing until the blockage is solved, the valves of the clean tube and the drain tube are closed, the valve positioned at the feed end of the discharge pump, the valve positioned in front of the inlet of the filter tube and the discharge pump are opened, and sewage treatment is continued.
Na-containing can be realized by the method + Or/and Ca 2+ Ion sewage treatment to reduce Na in sewage + Or/and Ca 2+ The content of the sewage treatment agent is the discharge standard, and the problem that a discharge pump is blocked by large-particle materials is also solved, so that the sewage treatment agent can treat sewage efficiently.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A sewage treatment device, characterized in that: comprising
A raw material tank for containing a liquid to be treated;
the preheating module is used for preheating the liquid to be treated, and is connected with the raw material pool through a raw material pipeline, and a feed pump is arranged on the raw material pipeline;
the MVR evaporator is used for separating liquid to be treated and is connected with the preheating module through a feeding pipeline;
the heater is used for supplying heat to the MVR evaporator and is connected with the MVR evaporator;
a crystallization tank for receiving liquid having been treated from the MVR evaporator, the liquid containing crystals; the crystallization tank is connected with a discharge port of the MVR evaporator through a discharge pipe, and a discharge pump is arranged on the discharge pipe;
and the centrifugal separator is used for separating crystals from liquid and is connected with a discharge hole of the crystallization tank through a connecting pipe.
2. A sewage treatment apparatus according to claim 1, wherein: a concentrated solution outlet in the MVR evaporator is connected with a circulating pipeline, the circulating pipeline flows through the heater, and a strong circulating pump is arranged on the circulating pipeline; the vapor outlet of the MVR evaporator is connected with the heater through a vapor pipeline, and a vapor compressor is installed on the vapor pipeline.
3. A sewage treatment apparatus according to claim 1, wherein: the preheating module at least comprises a first preheating device and a second preheating device, wherein the first preheating device is connected with the second preheating device through an intermediate connecting pipe, and the first preheating device is connected with the raw material pool through a raw material pipeline.
4. A sewage treatment apparatus according to claim 3, wherein: the preheating module further comprises a condensate water tank, an outlet of the condensate water tank is connected with the first preheater through a first condensate water pipe, and an inlet of the condensate water tank is connected with the second preheater through a second condensate water pipe;
a condensate pump and a flowmeter are arranged on the first condensate pipe;
and a condensation water port of the heater is communicated with the condensation water tank through a pipeline.
5. A sewage treatment apparatus according to claim 1, wherein: the liquid outlet of the centrifugal separator is connected with a mother liquor tank, the mother liquor tank is communicated with the raw material tank through a mother liquor pipe, and a mother liquor pump is arranged on the mother liquor pipe.
6. A sewage treatment apparatus according to claim 1, wherein: the device also comprises an anti-blocking mechanism, wherein the anti-blocking mechanism is arranged at a concentrated solution outlet of the MVR evaporator or/and between the MVR evaporator and the discharge pump;
the anti-blocking mechanism is arranged on an original pipeline, and the original pipeline is a concentrated solution pipe or a discharging pipe;
the anti-blocking mechanism comprises a connecting pipe and a filter pipe, the filter pipe is arranged in the connecting pipe, a circulation gap is formed between the outer wall of the filter pipe and the outer wall of the connecting pipe, and a plurality of filter holes are formed in the pipe wall of the filter pipe;
the inlet of the filter tube is communicated with the original pipeline through a valve, the outlet of the filter tube is connected with a sewage disposal tube through a valve, and the sewage disposal tube is used for introducing medium into the filter tube for back flushing;
the circulation gap is provided with a discharge hole and a drain pipe with a valve, wherein the discharge hole is communicated with a discharge pump.
7. A sewage treatment apparatus according to claim 6, wherein: the upper part of the filter tube is provided with an inlet for introducing medium into the filter tube for back flushing.
8. A method for treating sewage, characterized in that the sewage treatment apparatus according to any one of claims 1 to 7 is used for treating sewage containing Na + Or/and Ca 2+ Waste water of ions; the sewage treatment method comprises the following steps:
the sewage contained in the raw material pool is sent into a preheating module through a feed pump to be preheated;
the preheated sewage enters an MVR evaporator for evaporation treatment;
the evaporated material after the evaporation treatment of the MVR evaporator is sent into a crystallization tank through a discharge pump;
and (3) feeding the materials in the crystallization tank into a centrifugal separator for centrifugal separation, storing the separated crystals, discharging the separated liquid after reaching an exhaust standard, and feeding the separated liquid into the raw material tank if the separated liquid does not reach the standard.
9. The wastewater treatment method according to claim 8, further comprising
And conveying the steam discharged by the MVR evaporator to the heater for recycling through the steam compressor, and conveying condensed water generated after the steam is condensed by the heater to a condensed water tank of the preheating module for heat exchange of the first preheater.
10. The sewage treatment method according to claim 8, wherein if a blockage occurs between the MVR evaporator and the discharge pump or/and the discharge pump produces abnormal noise due to a shortage of material, the discharge pump is turned off, a valve at a feed end of the discharge pump and a valve before an inlet of the filter tube are closed, a valve of the purge tube is opened, clear water or high-pressure gas is filled into the filter tube through the purge tube, the filter tube is flushed, large-particle crystals blocked and filtered holes are dispersed or melted, the flushed material is discharged from the drain tube, after repeated flushing is performed until the blockage is resolved, the valves of the purge tube and the drain tube are closed, and the valve at a feed end of the discharge pump, the valve before the inlet of the filter tube and the discharge pump are opened, and sewage treatment is continued.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019254.3A CN116750931A (en) | 2023-08-14 | 2023-08-14 | Sewage treatment device and sewage treatment method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311019254.3A CN116750931A (en) | 2023-08-14 | 2023-08-14 | Sewage treatment device and sewage treatment method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116750931A true CN116750931A (en) | 2023-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311019254.3A Pending CN116750931A (en) | 2023-08-14 | 2023-08-14 | Sewage treatment device and sewage treatment method thereof |
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| Country | Link |
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| CN (1) | CN116750931A (en) |
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2023
- 2023-08-14 CN CN202311019254.3A patent/CN116750931A/en active Pending
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