CN113754078A - Application method of salt deposition inhibitor in high-salinity wastewater treatment - Google Patents
Application method of salt deposition inhibitor in high-salinity wastewater treatment Download PDFInfo
- Publication number
- CN113754078A CN113754078A CN202111110828.9A CN202111110828A CN113754078A CN 113754078 A CN113754078 A CN 113754078A CN 202111110828 A CN202111110828 A CN 202111110828A CN 113754078 A CN113754078 A CN 113754078A
- Authority
- CN
- China
- Prior art keywords
- deposition inhibitor
- salinity wastewater
- salinity
- salt
- salt deposition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 150000003839 salts Chemical class 0.000 title claims abstract description 39
- 239000003112 inhibitor Substances 0.000 title claims abstract description 35
- 230000008021 deposition Effects 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 12
- 239000002351 wastewater Substances 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000010791 quenching Methods 0.000 claims abstract description 11
- 239000013078 crystal Substances 0.000 claims abstract description 9
- 230000000171 quenching effect Effects 0.000 claims abstract description 9
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims abstract description 8
- 238000002425 crystallisation Methods 0.000 claims abstract description 6
- 230000008025 crystallization Effects 0.000 claims abstract description 6
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000004458 analytical method Methods 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- 239000002738 chelating agent Substances 0.000 claims description 6
- 150000002505 iron Chemical class 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 150000007524 organic acids Chemical class 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000009472 formulation Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F5/00—Softening water; Preventing scale; Adding scale preventatives or scale removers to water, e.g. adding sequestering agents
Abstract
The invention discloses a method for using a salt deposition inhibitor in high-salinity wastewater treatment, which belongs to the technical field of wastewater treatment and comprises the following steps: (1) carrying out crystallization research on the high-salinity wastewater, analyzing the process of crystal formation, and testing and selecting substances with promotion effect on the crystal formation; (2) preparing a salt deposition inhibitor according to the test analysis result of the step (1); (3) and (3) adding the salt deposition inhibitor prepared in the step (2) according to the water consumption when the water consumption of the quenching tower reaches 4T/h according to the salinity of the high-salinity wastewater. The invention provides a more convenient and low-cost high-salinity wastewater zero-discharge solution, does not need to add additional equipment, can be put into use on the same day, and has outstanding economical efficiency and timeliness.
Description
Technical Field
The invention belongs to the technical field of wastewater treatment, and particularly relates to a use method of a salt deposition inhibitor in high-salinity wastewater treatment.
Background
The existing high-salinity wastewater zero discharge is mainly an evaporative crystallization process, and the water treatment industry has a plurality of papers describing the technical route, such as 'application research of evaporative crystallization technology in the high-salinity wastewater zero discharge field' published in 'science and informatization' 2017.
However, the existing evaporation process needs to add MVR equipment, steam or electricity is used for heating high-salt wastewater, the wastewater is evaporated to dryness, and crystallized salt is disposed again. The evaporation process has large equipment investment, unstable operation and long construction period. The waste salt is difficult to dispose.
Disclosure of Invention
The invention aims to solve the existing problems and provides a method for using a salt deposition inhibitor in high-salinity wastewater treatment.
The invention is realized by the following technical scheme:
a method for using a salt deposition inhibitor in high-salinity wastewater treatment comprises the following steps:
(1) carrying out crystallization research on the high-salinity wastewater, analyzing the process of crystal formation, and testing and selecting substances with promotion effect on the crystal formation;
(2) preparing a salt deposition inhibitor according to the test analysis result of the step (1);
(3) and (3) adding the salt deposition inhibitor prepared in the step (2) according to the water consumption when the water consumption of the quenching tower reaches 4T/h according to the salinity of the high-salinity wastewater.
Further, the main components of the high-salt inhibitor in the step (2) are a metal chelating agent, an iron salt and an organic acid.
Further, the content of the metal chelating agent is 30-50%, the content of the iron salt is less than or equal to 10%, and the content of the organic acid is less than or equal to 10%.
Further, the salt deposition inhibitor in the step (2) is prepared according to different formulations aiming at high-salinity wastewater.
Further, the salt deposition inhibitor in the step (2) is wine red alkaline liquid.
Compared with the prior art, the invention has the following advantages:
1. after the salt accumulation inhibitor enters the quenching tower, salt can rapidly grow under the obvious action of the salt accumulation inhibitor, crystal nuclei are dispersed and not aggregated, one part of the salt accumulation inhibitor falls into a salt collection device of the quenching tower under the action of gravity, and the other part of the salt accumulation inhibitor enters a bag-type dust collector under the action of wind power.
2. The salt accumulation inhibitor can not be hardened on the inner wall of the quench tower, has loose dirt sample and is convenient to clean. Most of the salt will enter the collection device in the form of a powder charge. The unplanned shutdown of the quench tower is avoided, the running time is prolonged, and the high-salinity wastewater is properly treated.
3. The invention realizes zero discharge of high-salinity wastewater and actively responds to national environmental calls.
4. The method can complete the zero discharge of the high-salinity wastewater without additionally arranging an additional device for users with the quenching tower process, and has the advantages of low investment and quick response.
5. By using the method, users cannot cause the unplanned shutdown of the quenching tower due to the use of high-salt water as cooling water, and cannot cause negative influence on production.
6. The waste salt of the invention has lower chloride ion content, meets the national landfill requirement, can be subjected to landfill treatment, and saves the treatment cost. It can also be used as road building material.
7. The invention provides a more convenient and low-cost high-salinity wastewater zero-discharge solution, does not need to add additional equipment, can be put into use on the same day, and has outstanding economical efficiency and timeliness.
Detailed Description
A method for using a salt deposition inhibitor in high-salinity wastewater treatment comprises the following steps:
(1) carrying out crystallization research on the high-salinity wastewater, analyzing the process of crystal formation, and testing and selecting substances with promotion effect on the crystal formation;
(2) preparing a salt deposition inhibitor according to the test analysis result of the step (1);
(3) and (3) adding the salt deposition inhibitor prepared in the step (2) according to the water consumption when the water consumption of the quenching tower reaches 4T/h according to the salinity of the high-salinity wastewater.
The main components of the high-salt inhibitor in the step (2) are a metal chelating agent, iron salt and organic acid.
The content of the metal chelating agent is 30-50%, the content of the iron salt is less than or equal to 10%, and the content of the organic acid is less than or equal to 10%.
And (3) forming different formulas aiming at the high-salinity wastewater with different salinity during the preparation of the salt deposition inhibitor in the step (2).
The salt deposition inhibitor in the step (2) is wine red alkaline liquid.
The physicochemical indexes of the salt deposition inhibitor prepared by the method are shown in the following table 1:
TABLE 1
| Detecting items | Range |
| Appearance of the product | Colorless to wine red transparent liquid |
| pH @ 1% aqueous solution | 9.5-11.5 |
| Density @25 deg.C | 1.1-1.3 |
The use method of the invention comprises the following steps:
when the salt content is less than 5 percent and the water consumption of the quenching tower is 4T/h, the salt deposition inhibitor is added according to 1.5 per mill of the water consumption. Can obtain better salt-yielding effect.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited to the illustrated embodiments, and all the modifications and equivalents of the embodiments may be made without departing from the spirit of the present invention.
Claims (5)
1. The use method of the salt deposition inhibitor in the treatment of high-salinity wastewater is characterized by comprising the following steps:
(1) carrying out crystallization research on the high-salinity wastewater, analyzing the process of crystal formation, and testing and selecting substances with promotion effect on the crystal formation;
(2) preparing a salt deposition inhibitor according to the test analysis result of the step (1);
(3) and (3) adding the salt deposition inhibitor prepared in the step (2) according to the water consumption when the water consumption of the quenching tower reaches 4T/h according to the salinity of the high-salinity wastewater.
2. The method for using the salt deposition inhibitor in the high-salinity wastewater treatment according to claim 1, wherein the main components of the high-salinity inhibitor in the step (2) are a metal chelating agent, an iron salt and an organic acid.
3. The method for using the salt deposition inhibitor in the high-salinity wastewater treatment according to claim 2, wherein the content of the metal chelating agent is 30-50%, the content of the iron salt is less than or equal to 10%, and the content of the organic acid is less than or equal to 10%.
4. The method of claim 1, wherein the salt deposition inhibitor in step (2) is prepared by different formulations for different salinity of high salinity wastewater.
5. The method for using the salt deposition inhibitor in the high-salinity wastewater treatment according to claim 1, wherein the salt deposition inhibitor in the step (2) is a wine red alkaline liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110828.9A CN113754078A (en) | 2021-09-18 | 2021-09-18 | Application method of salt deposition inhibitor in high-salinity wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111110828.9A CN113754078A (en) | 2021-09-18 | 2021-09-18 | Application method of salt deposition inhibitor in high-salinity wastewater treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113754078A true CN113754078A (en) | 2021-12-07 |
Family
ID=78796901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111110828.9A Pending CN113754078A (en) | 2021-09-18 | 2021-09-18 | Application method of salt deposition inhibitor in high-salinity wastewater treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113754078A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101121A (en) * | 2017-12-20 | 2018-06-01 | 大拇指环保设备（天津）有限公司 | A kind of resource recycling method of iron content waste sulfuric acid solution |
| CN112079454A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
| CN112079452A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Polycarboxylic acid salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
| CN112079451A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Anti-deposition agent for salt-containing wastewater back-spraying quenching tower process |
-
2021
- 2021-09-18 CN CN202111110828.9A patent/CN113754078A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108101121A (en) * | 2017-12-20 | 2018-06-01 | 大拇指环保设备（天津）有限公司 | A kind of resource recycling method of iron content waste sulfuric acid solution |
| CN112079454A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
| CN112079452A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Polycarboxylic acid salt inhibitor for salt-containing wastewater back-spraying quenching tower process |
| CN112079451A (en) * | 2020-09-09 | 2020-12-15 | 南京全宇节能技术有限公司 | Anti-deposition agent for salt-containing wastewater back-spraying quenching tower process |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Nandy et al. | Wastewater management in a cane molasses distillery involving bioresource recovery | |
| CN101337729B (en) | Processing process for fermentation waste liquid of lysine | |
| CN100491595C (en) | Acid pickling inhibitor and preparation method thereof | |
| CN109279745A (en) | A kind of method that biodegrade chelating agent couples electronic removal desulfurization wastewater sludge heavy-metal | |
| CN101319230A (en) | Method for accelerating anaerobic fermentation of organic waste water or organic castoff to prepare sludge gas | |
| CN100457974C (en) | Metal pickling inhibitor and method for preparing the same | |
| CN113754078A (en) | Application method of salt deposition inhibitor in high-salinity wastewater treatment | |
| CN203529966U (en) | Negative pressure ammonia stilling system for coking plant | |
| CN107555762A (en) | A kind of flyash replaces the method and device of Lime And Sewage Sludge dehydration | |
| CN110723855B (en) | Concentration treatment method of high-salinity wastewater and scale and corrosion inhibitor for treating high-salinity wastewater | |
| CN204185347U (en) | The system of industrial sewage and active sludge synchronous processing | |
| CN103449591A (en) | High-concentration ammonia nitrogen wastewater treatment device | |
| Li et al. | Deciphering the effect of exogenous lignocellulases addition on the composting efficiency and microbial communities | |
| CN205170589U (en) | High corruption contains useless evaporation of water crystallization process system of salt | |
| CN111186969B (en) | Method and system for decrement treatment of biochemical excess sludge | |
| Chen et al. | Study on engineering process and equipment operation of total treatment project of leachate and concentrated solution | |
| CN109403416B (en) | Water balance system for recycling metal surface treatment waste | |
| Boncz et al. | Methods for stabilising and concentrating human urine for use as a fertilizer | |
| CN202988923U (en) | Closed cycle device for monosodium glutamate industrial production wastewater | |
| CN105601022A (en) | Method for recycling high-quality industrial salt from desulfurization wastewater of coal-fired power plant | |
| CN110723767A (en) | Low-temperature evaporation treatment and recovery method and device for iron-containing waste hydrochloric acid in steel plant | |
| CN203922917U (en) | A kind of pretreatment system of ambient neutral process ammonium nitrate device ammonia nitrogen waste water | |
| CN105295061A (en) | Temperature-sensitive polymer containing heavy metal chelate group and preparation method and application of temperature-sensitive polymer | |
| CN203229429U (en) | Device for treating ammonia-nitrogen wastewater by using vacuum degassing membrane technology | |
| CN203916448U (en) | The application apparatus of high ammonia-nitrogen wastewater in the ammonia process of desulfurization in monosodium glutamate industry |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |