CN205953702U - Wastewater treatment system - Google Patents
Wastewater treatment system Download PDFInfo
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- CN205953702U CN205953702U CN201620734139.3U CN201620734139U CN205953702U CN 205953702 U CN205953702 U CN 205953702U CN 201620734139 U CN201620734139 U CN 201620734139U CN 205953702 U CN205953702 U CN 205953702U
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- wastewater
- aqueous phase
- unit
- treatment system
- heat exchanger
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 31
- 239000002351 wastewater Substances 0.000 claims abstract description 80
- 150000003839 salts Chemical class 0.000 claims abstract description 43
- 239000008346 aqueous phase Substances 0.000 claims abstract description 29
- 238000010612 desalination reaction Methods 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 16
- 230000000593 degrading effect Effects 0.000 claims abstract description 10
- 239000000126 substance Substances 0.000 claims description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 43
- 239000012071 phase Substances 0.000 claims description 41
- 238000006243 chemical reaction Methods 0.000 claims description 40
- 230000015556 catabolic process Effects 0.000 claims description 18
- 238000006731 degradation reaction Methods 0.000 claims description 18
- 239000002002 slurry Substances 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 12
- 238000011033 desalting Methods 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000002360 preparation method Methods 0.000 claims description 10
- 239000013505 freshwater Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 238000009284 supercritical water oxidation Methods 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 239000012141 concentrate Substances 0.000 claims description 3
- 238000001728 nano-filtration Methods 0.000 claims description 3
- 238000001223 reverse osmosis Methods 0.000 claims description 3
- 238000000108 ultra-filtration Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 238000012423 maintenance Methods 0.000 abstract description 5
- 239000000203 mixture Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 239000007790 solid phase Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 4
- 239000001569 carbon dioxide Substances 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 231100000252 nontoxic Toxicity 0.000 description 3
- 230000003000 nontoxic effect Effects 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses a wastewater treatment system relates to the waste water treatment technology field for solve because the higher react unit that causes of salt content in the waste water corrodes, and then lead to whole wastewater treatment system's operation and the problem that the maintenance cost increases. Wherein, wastewater treatment system includes: the separating element for to be aqueous phase material and non - aqueous phase material including the separation of salt waste water, with the desalination unit that the separating element links to each other is used for reducing the salt content of aqueous phase material, with the react unit that the desalination unit links to each other, react unit still with the separating element links to each other, react unit be used for with aqueous phase material after non - aqueous phase material and salt content reduce mixes to waste water to after the mixture is degraded. Wastewater treatment system is used for the waste water processing of degrading.
Description
Technical Field
The utility model relates to a waste water treatment technical field especially relates to a waste water treatment system.
Background
Waste water produced in industry and life often contains organic matters, and some soluble inorganic salts and heavy metals also exist in the organic matters with high concentration, which causes great difficulty in degrading the waste water. At present, the wastewater containing organic matters (hereinafter referred to as organic wastewater) is mainly degraded by a supercritical water oxidation method, which is: supercritical water (when the air pressure and the temperature reach certain values, the density of water expanded due to high temperature is exactly the same as the density of water vapor compressed due to high pressure, at the moment, the liquid state and the gas state of the water are not different and are completely blended together to form a new liquid in a high-pressure high-temperature state, namely the supercritical water) is used as a medium, and organic matters contained in the wastewater are degraded into simple and non-toxic small molecular compounds such as water, carbon dioxide and the like under the conditions of high temperature and high pressure.
A wastewater treatment system used when organic wastewater is degraded by adopting a supercritical water oxidation method mainly comprises a reaction unit, and the reaction unit is easy to corrode. When organic wastewater with high salt content is treated, the reaction unit is strongly corroded due to high salt content in the wastewater, and the operation and maintenance cost of the wastewater treatment system is greatly increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a wastewater treatment system for solve because the higher reaction unit that causes of salt content in the waste water corrodes, and then lead to the operation of whole wastewater treatment system and the problem that the maintenance cost increases.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a wastewater treatment system, wastewater treatment system includes: the separation unit is used for separating the salt-containing wastewater into an aqueous phase substance and a non-aqueous phase substance; a desalination unit connected to the separation unit for reducing the salt content of the aqueous phase material; and the reaction unit is connected with the separation unit and is used for mixing the non-aqueous phase substances and the aqueous phase substances with reduced salt content and degrading the mixed wastewater.
When the wastewater treatment system is used for treating wastewater with high salt content, the separation unit is firstly used for separating the salt-containing wastewater into water-phase substances and non-water-phase substances, the separated non-water-phase substances are conveyed to the reaction unit, the water-phase substances are conveyed to the desalting unit for treatment of reducing the salt content, then the water-phase substances with low salt content are conveyed to the reaction unit, the water-phase substances with reduced salt content are mixed with the non-water-phase substances in the reaction unit, and the mixed wastewater is degraded. Because the wastewater subjected to degradation treatment in the reaction unit is subjected to treatment of reducing the salt content before entering the reaction unit, the salt content of the wastewater entering the reaction unit for degradation is lower, and the wastewater cannot corrode the reaction unit in the process of degrading the wastewater by the reaction unit, so that the operation and maintenance cost of the whole wastewater treatment system is reduced.
Drawings
The accompanying drawings, which are described herein, serve to provide a further understanding of the invention and constitute a part of this specification, and the exemplary embodiments and descriptions thereof are provided for explaining the invention without unduly limiting it.
In the drawings:
FIG. 1 is a first schematic structural diagram of a wastewater treatment system according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram II of a wastewater treatment system according to an embodiment of the present invention.
Reference numerals:
1-a solid-liquid separator; 2-an oil-water separator;
3-a desalting module block; 4-a concentrated water tank;
5-a fresh water pool; 6-slurry preparation pool;
7-a heat exchanger; 8-a reactor;
9-a pressure reduction unit; 11-a separation unit;
22-a desalination unit; 33-reaction unit.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.
As shown in fig. 1, the present example provides a wastewater treatment system including: separation unit 11, desalination unit 22, and reaction unit 33. The separation unit 11 is used for separating the salt-containing wastewater into an aqueous phase substance and a non-aqueous phase substance; the desalting unit 22 is connected with the separation unit 11 and is used for reducing the salt content of the water-phase substances; the reaction unit 33 is connected to the separation unit 11 and the desalination unit 22, respectively, and the reaction unit 33 is used for mixing the non-aqueous phase material and the aqueous phase material with reduced salt content and degrading the mixed wastewater.
Referring again to fig. 1, the specific process of the wastewater treatment system in this example may be: firstly, salt-containing wastewater is sent to a separation unit 11, the separation unit 11 separates the salt-containing wastewater into aqueous phase substances and non-aqueous phase substances, and the non-aqueous phase substances are sent to a reaction unit 33; and the water phase substance is delivered to the desalting unit 22, the treatment of reducing the salt content is completed in the desalting unit 22, then the water phase substance with reduced salt content is delivered to the reaction unit 33, in the reaction unit 33, the water phase substance with reduced salt content is mixed with the non-water phase substance, and the mixed wastewater is degraded, thereby completing the treatment work of wastewater, at this time, the wastewater after the degradation can be discharged.
Because the wastewater subjected to degradation treatment in the reaction unit is subjected to treatment for reducing the salt content before entering the reaction unit, the salt content of the wastewater entering the reaction unit for degradation is lower, and the wastewater cannot corrode the reaction unit in the process of degrading the wastewater by the reaction unit, so that the operation and maintenance cost of the whole wastewater treatment system is reduced.
In order to better separate the non-aqueous phase materials from the wastewater, as shown in fig. 2, the separation unit 11 in this embodiment may preferably include: a solid-liquid separator 1, and an oil-water separator 2 connected between the solid-liquid separator 1 and the desalting unit 22, and both the solid-liquid separator 1 and the oil-water separator 2 are connected to the reaction unit 33. The solid-liquid separator 1 is configured to separate the wastewater into solid-phase substances and liquid-phase substances, the separated solid-phase substances are directly sent to the reaction unit 33, the liquid-phase substances are sent to the oil-water separator 2, the oil-water separator 2 is configured to separate the liquid-phase substances into oil-phase substances and water-phase substances, the separated water-phase substances enter the desalination unit 22 to be processed by reducing the salt content, and the separated oil-phase substances are sent to the reaction unit 33. Because the wastewater entering the desalination unit 22 separates the water-insoluble macromolecular particles or solid particles (i.e., solid phase substances and oil phase substances) and is only water phase substances containing salt, the desalination unit 22 can better reduce the salt content of the water phase substances, and the wastewater in the wastewater is prevented from damaging the desalination unit due to the macromolecular particles or the solid particles.
Referring to fig. 2, the desalination unit 22 mentioned in this example may preferably include a desalination module block 3, a concentrate tank 4, and a fresh water tank 5. The desalination module block 3 is connected to a separation unit 11 for separating the water phase material into a low salt water phase material and a high salt water phase material. The concentrated water tank 4 is connected with the desalination module block 3 and is used for storing high-salinity water phase substances separated from the desalination module block 3. The fresh water tank 5 is connected between the desalination module block 3 and the reaction unit 33, and is used for storing the low-salt water phase substances separated by the desalination module block 3. In the wastewater treatment process, the low-salt water phase substances are fed to the reaction unit 33, and in the reaction unit 33, the low-salt water phase substances (i.e., the water phase substances after the reduction of the salt content) are mixed with the solid phase substances and the oil phase substances separated from the separation unit 11, and are subjected to degradation treatment.
The desalination module block mentioned in this embodiment may preferably include any one or more of an ultrafiltration membrane, a nanofiltration membrane, a reverse osmosis membrane, and a bipolar membrane. In the process of reducing the salt content of the water-phase substances by the desalination module block, one or more of an ultrafiltration membrane, a nanofiltration membrane, a reverse osmosis membrane and a bipolar membrane can be selected for combined use according to specific salt content in the water-phase substances, and the water-phase substances needing to be subjected to the treatment of reducing the salt content can be repeatedly treated so as to obtain the water-phase substances with lower salt content.
Referring again to fig. 2, in order to perform degradation treatment on the wastewater to make the wastewater reach the discharge standard, the reaction unit 33 in this example may preferably include: a slurry preparation pool 6, a heat exchanger 7, a reactor 8 and a pressure reduction unit 9. The stock preparation tank 6 is connected to the fresh water tank 5 in the desalting unit 22, and the stock preparation tank 6 is used for mixing the non-aqueous phase substances separated from the separation unit 11 with the low-salt aqueous phase substances transferred from the fresh water tank 5. The heat exchanger 7 is connected with the slurry preparation tank 6, and the heat exchanger 7 is used for preheating the mixed wastewater conveyed from the slurry preparation tank 6 so as to enable the wastewater to approach or reach the temperature required by degradation. The reactor 8 is connected with the heat exchanger 7, and the reactor 8 is used for degrading the preheated wastewater and conveying the degraded wastewater back to the heat exchanger 7. At this time, the wastewater after the degradation, which is transferred to the heat exchanger 7, is subjected to a temperature reduction treatment in the heat exchanger 7. The pressure reduction unit 9 is connected with the heat exchanger 7, and the pressure reduction unit 9 is used for carrying out pressure reduction treatment on the wastewater after degradation is conveyed to the heat exchanger 7.
The specific working process of the reaction unit can be as follows: the solid-phase substance and the oil-phase substance separated in the separation unit 11 are transferred to the pool 6 of the reaction unit 33, and the low-salt water-phase substance is transferred from the fresh water tank 5 to the pool 6, and at this time, the solid-phase substance, the oil-phase substance, and the low-salt water-phase substance are mixed in the pool 6. The mixing is preferably carried out fully, so that the subsequent degradation treatment can be more thorough, and the subsequent workload can be reduced. The mixed wastewater is conveyed into a heat exchanger 7 from a slurry preparation tank 6, and the wastewater is preheated in the heat exchanger 7, so that the temperature of the wastewater approaches or reaches the temperature required by degradation. And then conveying the preheated wastewater into a reactor 8 for wastewater degradation treatment, namely degrading the wastewater into simple and nontoxic small molecular compounds such as water, carbon dioxide and the like under the conditions of high pressure and high temperature. And then, conveying the wastewater after degradation back to the heat exchanger 7 for cooling treatment. In actual operation, the treatment process of the wastewater is uninterrupted, and in order to fully utilize resources, the heat required by preheating the mixed wastewater can directly utilize the heat generated by cooling the degraded wastewater. In the preferred embodiment, the heat exchanger 7 may be set to be a double-sleeve structure, the mixed wastewater (wastewater to be preheated) conveyed from the slurry preparation tank 6 enters one sleeve of the heat exchanger 7, and the degraded wastewater (wastewater to be cooled) conveyed from the reactor 8 enters the other sleeve of the heat exchanger 7, because the degraded wastewater needs to be cooled and the mixed wastewater needs to be preheated, the heat dissipated by cooling is just used as the heat required for preheating, such a design flow reduces the operation steps of wastewater treatment, and also makes full use of heat resources. Finally, the cooled wastewater (wastewater after degradation) enters a pressure reduction unit 9 for pressure reduction treatment, and the wastewater can be discharged after the treatment.
The reaction unit 33 of this embodiment may further include a low-pressure pump and a high-pressure pump between the slurry distribution tank 6 and the heat exchanger 7, and the slurry distribution tank 6, the low-pressure pump, the high-pressure pump, and the heat exchanger 7 are connected in sequence. The low-pressure pump is used to make the pressure of the wastewater output from the low-pressure pump meet the inlet pressure requirement of the high-pressure pump, and if the inlet pressure requirement of the high-pressure pump is 0.1MPa to 0.6MPa, the pressure of the wastewater output from the low-pressure pump may preferably be 0.3 MPa. The high-pressure pump is used for enabling the pressure of the wastewater output from the high-pressure pump to meet the pressure requirement required by degradation in the reactor 8, and preferably, the pressure of the wastewater output from the high-pressure pump is above 22.1MPa so as to meet the pressure requirement required by degradation of the wastewater.
The reactor 8 in this embodiment may be a supercritical water oxidation reactor, so that the preheated slurry can be degraded by a supercritical water oxidation method, and the slurry can be degraded into simple and nontoxic small molecular compounds such as water and carbon dioxide, so as to reach the emission standard.
In order to fully utilize resources, the heat exchanger 7 can be connected with the concentrated water tank 4, and the waste heat generated by the heat exchanger 7 is conveyed into the concentrated water tank. In the actual operation process, the waste heat generated by the heat exchanger 7 can reach 150 ℃, so that the part of waste heat is conveyed to the concentrated water tank 4, and the further evaporation of the water in the concentrated water tank 4 can be promoted. In particular, in this example, the waste heat generated by the heat exchanger 7 can be transferred to the concentrated water tank 4 through the guide cylinder.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A wastewater treatment system, comprising:
the separation unit is used for separating the salt-containing wastewater into an aqueous phase substance and a non-aqueous phase substance;
a desalination unit connected to the separation unit for reducing the salt content of the aqueous phase material;
the reaction unit is connected with the desalting unit and the separation unit and is used for mixing the non-aqueous phase substances and the aqueous phase substances with reduced salt content and degrading the mixed wastewater;
the separation unit comprises a solid-liquid separator and an oil-water separator connected between the solid-liquid separator and the desalting unit, and the solid-liquid separator and the oil-water separator are also connected with the reaction unit.
2. The wastewater treatment system of claim 1, wherein the desalination unit comprises:
a desalination module block connected to the separation unit for separating the water phase material into a low salt water phase material and a high salt water phase material;
a fresh water tank connected between the desalination module block and the reaction unit for storing the low-salt water phase substances;
and the concentrated water tank is connected with the desalting module block and is used for storing the high-salt water phase substances.
3. The wastewater treatment system according to claim 2, wherein the desalination module block comprises any one or more of an ultrafiltration membrane, a nanofiltration membrane, a reverse osmosis membrane, and a bipolar membrane.
4. The wastewater treatment system of claim 2, wherein the reaction unit comprises:
a slurry preparation tank connected to the fresh water tank for mixing the non-aqueous phase substance and the low-salt aqueous phase substance;
the heat exchanger is connected with the slurry preparation tank and is used for preheating wastewater formed by mixing the non-aqueous phase substances and the low-salt aqueous phase substances;
the reactor is connected with the heat exchanger and is used for degrading the preheated wastewater and conveying the degraded wastewater back to the heat exchanger; the heat exchanger is also used for cooling the degraded wastewater conveyed back by the reactor;
and the pressure reduction unit is connected with the heat exchanger and is used for reducing the pressure of the degraded wastewater conveyed back to the heat exchanger by the reactor and discharging the wastewater after temperature reduction and pressure reduction.
5. The wastewater treatment system of claim 4, wherein the reaction unit further comprises: the slurry distribution tank, the low-pressure pump, the high-pressure pump and the heat exchanger are sequentially connected; wherein,
the low-pressure pump is used for enabling the pressure of the wastewater output from the low-pressure pump to meet the inlet pressure requirement of the high-pressure pump; the high-pressure pump is used for enabling the pressure of the wastewater output from the high-pressure pump to meet the pressure requirement required for degradation in the reactor.
6. The wastewater treatment system of claim 4, wherein the reactor is a supercritical water oxidation reactor.
7. The wastewater treatment system of claim 4, wherein the heat exchanger is further coupled to the concentrate tank, the heat exchanger further configured to provide self-generated waste heat to the concentrate tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620734139.3U CN205953702U (en) | 2016-07-12 | 2016-07-12 | Wastewater treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620734139.3U CN205953702U (en) | 2016-07-12 | 2016-07-12 | Wastewater treatment system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205953702U true CN205953702U (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620734139.3U Active CN205953702U (en) | 2016-07-12 | 2016-07-12 | Wastewater treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252974A (en) * | 2018-12-03 | 2020-06-09 | 广州中国科学院先进技术研究所 | Process and system for treating high-salinity organic wastewater based on supercritical water oxidation |
-
2016
- 2016-07-12 CN CN201620734139.3U patent/CN205953702U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111252974A (en) * | 2018-12-03 | 2020-06-09 | 广州中国科学院先进技术研究所 | Process and system for treating high-salinity organic wastewater based on supercritical water oxidation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180105 Address after: 065001 Hebei city of Langfang province C New Austrian Science Park Economic Development Zone Xinyuan host city Patentee after: Environmental Protection Technology Co., Ltd. Address before: The 065001 Hebei economic and Technological Development Zone of Langfang Huaxiang new Austrian Science and Technology Park in the Southern District B building room 522 Patentee before: ENN SCIENCE & TECHNOLOGY DEVELOPMENT Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 065001 New Austrian Science Park D Building, 118 Huaxiang Road, Langfang Development Zone, Hebei Province Patentee after: Xindi Environmental Protection Technology Co., Ltd. Address before: 065001 Block C, New Austrian Science Park, Xinyuan East Road, Langfang Economic Development Zone, Hebei Province Patentee before: Environmental Protection Technology Co., Ltd. |
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| CP03 | Change of name, title or address |