CN111302552A - Landfill leachate concentrated solution resource utilization system and method - Google Patents
Landfill leachate concentrated solution resource utilization system and method Download PDFInfo
- Publication number
- CN111302552A CN111302552A CN202010155911.7A CN202010155911A CN111302552A CN 111302552 A CN111302552 A CN 111302552A CN 202010155911 A CN202010155911 A CN 202010155911A CN 111302552 A CN111302552 A CN 111302552A
- Authority
- CN
- China
- Prior art keywords
- concentrated solution
- landfill leachate
- resource utilization
- electrodialysis
- inorganic salt
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
- C01B25/451—Phosphates containing plural metal, or metal and ammonium containing metal and ammonium
-
- 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
- C02F1/048—Purification of waste water by 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- 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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/586—Treatment of water, waste water, or sewage by removing specified dissolved compounds by removing ammoniacal nitrogen
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/06—Contaminated groundwater or leachate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- 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
- C02F5/02—Softening water by precipitation of the hardness
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention relates to a garbage leachate concentrated solution resource utilization system and a method, wherein the resource utilization system comprises a concentrated solution softening system, an electrodialysis system, an MAP (MAP) sedimentation tank and an inorganic salt evaporation concentration system which are sequentially communicated, and the electrodialysis system is also connected with a humic acid adsorption system. The landfill leachate concentrated solution resource utilization system adopts a two-stage electrodialysis system to effectively separate humic acid organic matters and inorganic salts, effectively improves the separation effect of the inorganic salts, can save the processes of intermittence/circulation, reflux and the like, and simplifies the process; a softening system is added, the hardness of the concentrated solution is reduced, membrane pollution of an electrodialysis system is avoided, the service life of the membrane is prolonged, and the maintenance cost of the membrane system is reduced; a recycling system of ammonia nitrogen and inorganic salt is added, and the efficiency of resource utilization of the percolate concentrated solution is improved; the submerged combustion evaporation and the modified attapulgite adsorption are arranged, so that the synchronous recovery of inorganic salt and humic acid is realized, and the resource is recycled to the maximum extent.
Description
Technical Field
The invention relates to a resource utilization system and method for landfill leachate concentrated solution, and belongs to the technical field of town wastewater treatment.
Background
The combined process of the membrane bioreactor and nanofiltration (MBR + NF) is applied to the advanced treatment of the landfill leachate, which is proved to be a very effective technical means, however, the amount of the concentrated solution after membrane treatment can still reach 20-30% of the volume of the raw water, and the part of the wastewater has the characteristics of complex components, poor biodegradability, high chroma, high ammonia nitrogen content, high inorganic salt content and the like, belongs to the wastewater which is difficult to treat, has great harm to the environment, and is also a main factor for restricting the current landfill leachate treatment. The current main treatment means for the part of wastewater comprise transfer treatment (recharging method), reduction treatment (membrane reduction method, membrane distillation method and evaporation method), harmless treatment (advanced oxidation method and electrochemical method) and resource utilization method (humic acid and inorganic salt recovery), and when the method is used in the prior art, the problems of inorganic salt accumulation, equipment corrosion, low treatment efficiency and the like exist, and the research is mainly directed to harmless treatment, and the research on resource utilization is still less. In the existing resource utilization schemes, one of the schemes is to extract humic acid by combining a two-stage ultrafiltration membrane treatment and an evaporation technology after MBR and NF, separate the humic acid from other components (inorganic salts, heavy metals and the like) in a concentrated solution through the two-stage ultrafiltration membrane, return a permeate of the two-stage ultrafiltration membrane to the first-stage ultrafiltration membrane to improve the separation efficiency, and then concentrate the humic acid through an evaporation method and apply the humic acid as an organic fertilizer.
The prior art scheme mainly has the following disadvantages: firstly, when the first-stage ultrafiltration membrane is used for treatment, the interception effect on small-molecular organic matters is poor, organic matters in a concentrated solution mainly comprise humic acid, wherein the small-molecular fulvic acid accounts for about 80%, and a large amount of fulvic acid can be lost during the treatment of the first-stage ultrafiltration membrane and enters a permeate liquid, so that the subsequent treatment cost is increased, and the recovery rate of the humic acid is reduced; secondly, on the basis of the requirement of improving the recovery rate of humic acid, the concentration multiple needs to be increased during the treatment of a secondary ultrafiltration membrane, but the operation can lead to the large enrichment of calcium and magnesium ions in the concentrated solution on the membrane, so that the aggravation of membrane pollution is caused, and the service life of the membrane is influenced; the third point is that the process is only aimed at humic acid recovery, and the inorganic salt is a valuable resource, and the scheme lacks a comprehensive process flow for simultaneously separating and recovering the inorganic salt and the humic acid.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a landfill leachate concentrated solution resource utilization system and a method, and the system has high efficiency, stability and high resource recovery efficiency.
In order to achieve the purpose, the invention adopts the technical scheme that: the recycling system comprises a concentrated solution softening system, an electrodialysis system, a MAP (metal oxide semiconductor) sedimentation tank and an inorganic salt evaporation concentration system which are sequentially communicated, wherein the electrodialysis system is also connected with a humic acid adsorption system.
As a preferred embodiment of the landfill leachate concentrated solution resource utilization system, an automatic flow meter, a pH sensor and a softener automatic feeding device are arranged in the concentrated solution softening system. The dosage of the concentrated solution softening system is controlled by a pH sensor and an automatic flowmeter.
As a preferred embodiment of the landfill leachate concentrated solution resource utilization system, a softener in the concentrated solution softening system is caustic soda and sodium carbonate, the pH value of the solution is 9, and the dosage of the sodium carbonate is 0.5-2 g/L of water inlet flow.
As a preferred embodiment of the landfill leachate concentrate resource utilization system, the electrodialysis system adopts two-stage treatment, an anode plate, a cathode plate, a cation exchange membrane, an anion exchange membrane, a guide partition wall and a partition plate are arranged in the electrodialysis system, the guide partition wall is vertically arranged in the middle of the electrodialysis system, and the left side and the right side of the guide partition wall are formed by alternately combining a membrane stack generated by alternately combining the cation exchange membrane, the partition plate and the anion exchange membrane with the anode plate and the cathode plate.
As a preferred embodiment of the landfill leachate concentrated solution resource utilization system, an electrode solution of the electrodialysis system is anhydrous sodium sulfate, and the conductivity of the electrode solution is 30-70 ms/cm.
As a preferred embodiment of the landfill leachate concentrated solution resource utilization system, an adsorption layer is arranged in the humic acid adsorption system, an adsorbent filled in the adsorption layer is modified attapulgite, and the modification method of the modified attapulgite comprises the following steps: acidizing the attapulgite by using 3mol/L sulfuric acid for 3h, adding 0.5mol/L sodium chloride, carrying out nano treatment for 2h, then adding an organic modifier, and carrying out microwave treatment for 9min to obtain the modified attapulgite. The organic modifier is octadecyl trimethyl ammonium chloride, and the adding amount of the organic modifier is 1-4% of the mass of the attapulgite. The effluent after the attapulgite adsorption is discharged after reaching the standard, and the attapulgite loaded with humic acid is recycled.
As a preferred embodiment of the landfill leachate concentrated solution resource utilization system, an automatic flow meter, a pH sensor, an automatic precipitator feeding device and a collecting hopper are arranged in the MAP sedimentation tank.
According to the preferable embodiment of the landfill leachate concentrated solution resource utilization system, the precipitator of the MAP sedimentation tank is magnesium salt and phosphate, the pH value of the MAP sedimentation tank is 8-10, and the mass ratio of the magnesium salt to the phosphate is 1: (1-1.3). Magnesium salt and phosphate are used as a precipitator and react with ammonia nitrogen to generate magnesium ammonium phosphate precipitate to fix the ammonia nitrogen in the concentrated solution, so that the magnesium ammonium phosphate precipitate is separated from the concentrated solution, and the magnesium ammonium phosphate precipitate can be used as a feed additive and a fertilizer additive for resource recycling. The phosphate can be sodium phosphate or sodium hydrogen phosphate.
As a preferred embodiment of the landfill leachate concentrated solution resource utilization system, an inorganic salt crystallization collecting tank is arranged in the inorganic salt evaporation and concentration system, and the inorganic salt crystallization collecting tank is positioned at the bottom of the inorganic salt evaporation and concentration system. The inorganic salt evaporation and concentration system adopts an immersion combustion evaporation process, methane generated by tedious fermentation of leachate is used as fuel, flue gas generated by combustion is introduced into the evaporation system to be evaporated, crystallized and recycled, water vapor discharged by the evaporation system enters a heat exchanger to be used as a supplementary heat source, the energy utilization efficiency of the system is improved, and condensed effluent can be reused as reuse water.
In a second aspect, the invention provides a landfill leachate concentrated solution resource utilization method, which adopts the landfill leachate concentrated solution resource utilization system, and the method comprises the following steps:
(1) conveying the landfill leachate concentrated solution to a concentrated solution softening system to reduce the hardness of water;
(2) conveying the material treated in the step (1) to an electrodialysis system, and separating humic acid and inorganic salt substances;
(3) conveying the electrodialysis system permeate liquid treated in the step (2) to a humic acid adsorption system for humic acid recovery;
(4) conveying the electrodialysis system concentrated solution treated in the step (2) to an MAP (MAP) sedimentation tank, removing ammonia nitrogen in the electrodialysis concentrated solution, and recovering magnesium ammonium phosphate;
(5) and (4) conveying the material treated in the step (4) to an inorganic salt evaporation system, and concentrating to obtain inorganic salt crystals.
Compared with the prior art, the invention has the beneficial effects that: the landfill leachate concentrated solution resource utilization system provided by the invention adopts a two-stage electrodialysis system to effectively separate humic acid organic matters and inorganic salts, so that the inorganic salt separation effect is effectively improved, the processes such as intermittence/circulation, backflow and the like can be omitted, the process is simplified, and the large loss of micromolecular humic acid can be avoided, so that the recovery rate is improved; a softening system is added, the hardness of the concentrated solution is reduced, membrane pollution of an electrodialysis system is avoided, the service life of the membrane is prolonged, and the maintenance cost of the membrane system is reduced; a recycling system of ammonia nitrogen and inorganic salt is added, and the efficiency of resource utilization of the percolate concentrated solution is improved; the MAP precipitation system is adopted to recover ammonia nitrogen in the electrodialysis concentrated solution, the formed magnesium ammonium phosphate can be recycled as resources, meanwhile, the influence of the ammonia nitrogen on the evaporation and purification of inorganic salt can be avoided, and conditions are provided for the subsequent evaporation and purification of the inorganic salt; the submerged combustion evaporation and the modified attapulgite adsorption are arranged, so that the synchronous recovery of inorganic salt and humic acid is realized, and the resource is recycled to the maximum extent; the submerged combustion evaporation technology is adopted, and a methane tank generated by leachate anaerobic fermentation is used as a fuel source, so that the efficiency of evaporation concentration and energy utilization is improved; the modified attapulgite is used as the humic acid adsorbent, has wide material source and high recovery efficiency, and can be reused as a soil conditioner or a heavy metal adsorbent in wastewater after adsorption.
Drawings
Fig. 1 is a process flow diagram of a landfill leachate concentrate resource utilization system according to an embodiment of the invention.
Fig. 2 is a schematic structural diagram of a landfill leachate concentrated solution resource utilization system according to an embodiment of the present invention.
1. Concentrated solution softening system, 2, electrodialysis system, 3, MAP sedimentation tank, 4, inorganic salt evaporation system, 5, humic acid adsorption system, 101, automatic flow meter, 102, pH sensor, 103, softener automatic feeding device, 201, anode plate, 202, cathode plate, 203, cation exchange membrane, 204, anion exchange membrane, 205, guide partition wall, 206, partition board, 301, automatic flow meter, 302, pH sensor, 303, precipitant automatic feeding device, 304 collecting hopper, 401, inorganic salt crystallization collecting tank, 501 and adsorption layer.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
The recycling system for the landfill leachate concentrated solution comprises a concentrated solution softening system 1, an electrodialysis system 2, a MAP (metal oxide) sedimentation tank 3 and an inorganic salt evaporation and concentration system 4 which are sequentially communicated, wherein the electrodialysis system 2 is further connected with a humic acid adsorption system 5. The process flow diagram and the structural schematic diagram of the landfill leachate concentrate recycling system of the embodiment are respectively shown in fig. 1 and fig. 2.
Further, an automatic flow 101 meter, a pH sensor 102 and an automatic softener adding device 103 are arranged in the concentrated solution softening system 1. The dosage of the concentrated solution softening system is controlled by a pH sensor and an automatic flowmeter.
Further, the softening agent in the concentrated solution softening system is caustic soda and sodium carbonate, the pH value of the solution is 9, and the using amount of the sodium carbonate is 0.5-2 g/L of water inlet flow.
Further, the electrodialysis system adopts two-stage treatment, an anode plate 201, a cathode plate 202, a cation exchange membrane 203, an anion exchange membrane 204, a guide partition wall 205 and a partition plate 206 are arranged in the electrodialysis system, the guide partition wall 205 is vertically arranged in the middle of the electrodialysis system 2, and the left side and the right side of the guide partition wall 205 are formed by alternately combining a membrane stack generated by alternately combining the cation exchange membrane 203, the partition plate 206 and the anion exchange membrane 204 with the anode plate 202 and the cathode plate 201.
Further, the electrode solution of the electrodialysis system is anhydrous sodium sulfate, and the conductivity of the electrode solution is 30-70 ms/cm.
Further, an adsorption layer 501 is arranged in the humic acid adsorption system 5, an adsorbent filled in the adsorption layer is modified attapulgite, and the modification method of the modified attapulgite comprises the following steps: acidizing the attapulgite by using 3mol/L sulfuric acid for 3h, adding 0.5mol/L sodium chloride, carrying out nano treatment for 2h, then adding an organic modifier, and carrying out microwave treatment for 9min to obtain the modified attapulgite. The organic modifier is octadecyl trimethyl ammonium chloride, and the adding amount of the organic modifier is 1-4% of the mass of the attapulgite. The effluent after the attapulgite adsorption is discharged after reaching the standard, and the attapulgite loaded with humic acid is recycled.
Further, an automatic flow meter 301, a pH sensor 302, an automatic precipitant adding device 303, and a collecting hopper 304 are arranged in the MAP sedimentation tank 3.
Further, the precipitating agent of the MAP precipitation tank is magnesium salt and phosphate, the pH value of the MAP precipitation tank is 8-10, and the mass ratio of the magnesium salt to the phosphate is 1: (1-1.3). Magnesium salt and phosphate are used as a precipitator and react with ammonia nitrogen to generate magnesium ammonium phosphate precipitate to fix the ammonia nitrogen in the concentrated solution, so that the magnesium ammonium phosphate precipitate is separated from the concentrated solution, and the magnesium ammonium phosphate precipitate can be used as a feed additive and a fertilizer additive for resource recycling. The phosphate can be sodium phosphate or sodium hydrogen phosphate.
Further, an inorganic salt crystallization collecting tank 401 is arranged in the inorganic salt evaporation concentration system 4, and the inorganic salt crystallization collecting tank 401 is located at the bottom of the inorganic salt evaporation concentration system 4. The inorganic salt evaporation and concentration system adopts an immersion combustion evaporation process, methane generated by tedious fermentation of leachate is used as fuel, flue gas generated by combustion is introduced into the evaporation system to be evaporated, crystallized and recycled, water vapor discharged by the evaporation system enters a heat exchanger to be used as a supplementary heat source, the energy utilization efficiency of the system is improved, and condensed effluent can be reused as reuse water.
A landfill leachate concentrated solution resource utilization method adopts the landfill leachate concentrated solution resource utilization system, and the method comprises the following steps:
(1) conveying the landfill leachate concentrated solution to a concentrated solution softening system to reduce the hardness of water;
(2) conveying the material treated in the step (1) to an electrodialysis system, and separating humic acid and inorganic salt substances;
(3) conveying the electrodialysis system permeate liquid treated in the step (2) to a humic acid adsorption system for humic acid recovery;
(4) conveying the electrodialysis system concentrated solution treated in the step (2) to an MAP (MAP) sedimentation tank, removing ammonia nitrogen in the electrodialysis concentrated solution, and recovering magnesium ammonium phosphate;
(5) and (4) conveying the material treated in the step (4) to an inorganic salt evaporation system, and concentrating to obtain inorganic salt crystals.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (10)
1. The garbage leachate concentrated solution resource utilization system is characterized by comprising a concentrated solution softening system, an electrodialysis system, a MAP (metal oxide semiconductor) sedimentation tank and an inorganic salt evaporation concentration system which are sequentially communicated, wherein the electrodialysis system is further connected with a humic acid adsorption system.
2. The landfill leachate concentrate recycling system of claim 1, wherein an automatic flow meter, a pH sensor and an automatic softener adding device are provided in the concentrate softening system.
3. The landfill leachate concentrate resource utilization system according to claim 1, wherein the softener in the concentrate softening system is caustic soda and soda ash, the pH of the solution is 9, and the amount of the soda ash is 0.5-2 g/L of the inflow rate.
4. The landfill leachate concentrate resource utilization system according to claim 1, wherein the electrodialysis system employs two-stage treatment, the electrodialysis system is provided with an anode plate, a cathode plate, a cation exchange membrane, an anion exchange membrane, a guide partition wall and a partition plate, the guide partition wall is vertically arranged in the middle of the electrodialysis system, and the left side and the right side of the guide partition wall are formed by alternately combining a membrane stack generated by alternately combining the cation exchange membrane, the partition plate and the anion exchange membrane with the anode plate and the cathode plate.
5. The landfill leachate concentrate resource utilization system according to claim 1, wherein the electrode solution of the electrodialysis system is anhydrous sodium sulfate, and the conductivity of the electrode solution is 30 to 70 ms/cm.
6. The landfill leachate concentrated solution resource utilization system according to claim 1, wherein an adsorption layer is arranged in the humic acid adsorption system, an adsorbent filled in the adsorption layer is modified attapulgite, and a modification method of the modified attapulgite comprises the following steps: acidizing the attapulgite by using 3mol/L sulfuric acid for 3h, adding 0.5mol/L sodium chloride, carrying out nano treatment for 2h, then adding an organic modifier, and carrying out microwave treatment for 9min to obtain the modified attapulgite.
7. The landfill leachate concentrate recycling system of claim 1, wherein an automatic flow meter, a pH sensor, an automatic precipitant feeder, and a collection hopper are disposed in the MAP sedimentation tank.
8. The landfill leachate concentrate resource utilization system according to claim 1, wherein the precipitator in the MAP sedimentation tank is magnesium salt and phosphate, the pH value of the MAP sedimentation tank is 8-10, and the mass ratio of the magnesium salt to the phosphate is 1: (1-1.3).
9. The landfill leachate concentrate recycling system according to claim 1, wherein the inorganic salt evaporative concentration system is provided with an inorganic salt crystal collection tank, and the inorganic salt crystal collection tank is located at the bottom of the inorganic salt evaporative concentration system.
10. A method for recycling a landfill leachate concentrate, wherein the method employs the landfill leachate concentrate recycling system according to any one of claims 1 to 9, and the method includes the steps of:
(1) conveying the landfill leachate concentrated solution to a concentrated solution softening system;
(2) conveying the material treated in the step (1) to an electrodialysis system, and separating humic acid and inorganic salt substances;
(3) conveying the electrodialysis system permeate liquid treated in the step (2) to a humic acid adsorption system for humic acid recovery;
(4) conveying the electrodialysis system concentrated solution treated in the step (2) to an MAP (MAP) sedimentation tank, removing ammonia nitrogen in the electrodialysis concentrated solution, and recovering magnesium ammonium phosphate;
(5) and (4) conveying the material treated in the step (4) to an inorganic salt evaporation system, and concentrating to obtain inorganic salt crystals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155911.7A CN111302552A (en) | 2020-03-09 | 2020-03-09 | Landfill leachate concentrated solution resource utilization system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010155911.7A CN111302552A (en) | 2020-03-09 | 2020-03-09 | Landfill leachate concentrated solution resource utilization system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111302552A true CN111302552A (en) | 2020-06-19 |
Family
ID=71156778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010155911.7A Pending CN111302552A (en) | 2020-03-09 | 2020-03-09 | Landfill leachate concentrated solution resource utilization system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111302552A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504746A (en) * | 2020-12-24 | 2021-03-16 | 山东微谱检测技术有限公司 | Water sample extraction method |
| CN112978763A (en) * | 2021-04-19 | 2021-06-18 | 中国科学院城市环境研究所 | Method for producing fertilizer by electrodialysis |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244046Y (en) * | 1996-01-05 | 1997-01-01 | 谭士滨 | High efficient micro electrodialysis desalting device for brackish water |
| CN103611494A (en) * | 2013-11-21 | 2014-03-05 | 陕西科技大学 | Amido modified attapulgite clay adsorbent and method for preparing and adsorbing humic acid |
| CN103951141A (en) * | 2014-05-08 | 2014-07-30 | 东莞市环境科学研究所 | Garbage leachate treatment process and device |
| CN104528863A (en) * | 2014-12-09 | 2015-04-22 | 厦门理工学院 | Method for removing heavy metals in garbage percolate through surfactant-modified attapulgite |
| CN106140095A (en) * | 2016-07-01 | 2016-11-23 | 广西民族大学 | The modified preparation of the tertiary amine oxide modified attapulgite earth adsorbing of Abietyl-containing ternary phenanthrene ring structure and application |
| CN108218138A (en) * | 2018-03-01 | 2018-06-29 | 天津城建大学 | The waste water resource retracting device of electrodialysis coupled biological processing |
| CN207608434U (en) * | 2017-10-10 | 2018-07-13 | 厦门市科宁沃特水处理科技股份有限公司 | A kind of rubbish percolation liquid membrane concentration solution electrodialysis advanced treatment device |
| CN110510712A (en) * | 2019-08-09 | 2019-11-29 | 南开大学 | A kind of electrodialysis system and method for bitter desalination |
-
2020
- 2020-03-09 CN CN202010155911.7A patent/CN111302552A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2244046Y (en) * | 1996-01-05 | 1997-01-01 | 谭士滨 | High efficient micro electrodialysis desalting device for brackish water |
| CN103611494A (en) * | 2013-11-21 | 2014-03-05 | 陕西科技大学 | Amido modified attapulgite clay adsorbent and method for preparing and adsorbing humic acid |
| CN103951141A (en) * | 2014-05-08 | 2014-07-30 | 东莞市环境科学研究所 | Garbage leachate treatment process and device |
| CN104528863A (en) * | 2014-12-09 | 2015-04-22 | 厦门理工学院 | Method for removing heavy metals in garbage percolate through surfactant-modified attapulgite |
| CN106140095A (en) * | 2016-07-01 | 2016-11-23 | 广西民族大学 | The modified preparation of the tertiary amine oxide modified attapulgite earth adsorbing of Abietyl-containing ternary phenanthrene ring structure and application |
| CN207608434U (en) * | 2017-10-10 | 2018-07-13 | 厦门市科宁沃特水处理科技股份有限公司 | A kind of rubbish percolation liquid membrane concentration solution electrodialysis advanced treatment device |
| CN108218138A (en) * | 2018-03-01 | 2018-06-29 | 天津城建大学 | The waste water resource retracting device of electrodialysis coupled biological processing |
| CN110510712A (en) * | 2019-08-09 | 2019-11-29 | 南开大学 | A kind of electrodialysis system and method for bitter desalination |
Non-Patent Citations (3)
| Title |
|---|
| 张泉等: "电渗析处理某垃圾填埋场高盐渗滤液中试研究", 《工业用水与废水》 * |
| 霍县革命委员会三肥办公室: "《腐植酸类肥料的制作与施用》", 31 October 1976, 山西人民出版社 * |
| 黄占斌: "《环境材料学》", 30 November 2017, 冶金工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112504746A (en) * | 2020-12-24 | 2021-03-16 | 山东微谱检测技术有限公司 | Water sample extraction method |
| CN112978763A (en) * | 2021-04-19 | 2021-06-18 | 中国科学院城市环境研究所 | Method for producing fertilizer by electrodialysis |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10662075B2 (en) | Method and apparatus for the recovery and deep treatment of polluted acid | |
| CN110065958B (en) | Method for preparing lithium hydroxide by treating salt lake brine through integrated selective electrodialysis and selective bipolar membrane electrodialysis | |
| CN108689522B (en) | Method for treating and recycling mixed acid wastewater in photovoltaic industry | |
| Du et al. | Coupled electrochemical methods for nitrogen and phosphorus recovery from wastewater: a review | |
| CN105439358A (en) | Method and device for realizing zero discharge of desulfurization wastewater | |
| CN113184818B (en) | High-purity nitrogen and phosphorus recovery device in source separated urine and recovery method and application thereof | |
| CN209835879U (en) | System for preparing acid and alkali by utilizing desulfurization wastewater | |
| An et al. | Zero-liquid discharge technologies for desulfurization wastewater: A review | |
| CN111302552A (en) | Landfill leachate concentrated solution resource utilization system and method | |
| CN110937728A (en) | Desulfurization wastewater treatment method and system | |
| WO2021036406A1 (en) | Zero liquid discharge systems and processes for high-salinity wastewater treatment | |
| CN112093981A (en) | Sewage treatment device and process for synchronously and efficiently removing pollutants and comprehensively recycling pollutants | |
| CN113292187A (en) | Resourceful treatment method and device for high-concentration ammonia nitrogen wastewater | |
| CN105084631B (en) | A kind of handling process of resin regeneration waste water | |
| CN111675394A (en) | High-salt industrial wastewater resource recovery treatment system and method | |
| CN113184952B (en) | Synchronous recovery device for nitrogen and phosphorus in wastewater and recovery method and application thereof | |
| CN214360828U (en) | Sewage treatment device for synchronously removing high-efficiency pollutants and comprehensively recycling pollutants | |
| CN108483710B (en) | Comprehensive seawater utilization method and system | |
| CN107662929B (en) | Sodium chloride and sodium sulfate separation concentration elutriation process and system in strong brine zero emission | |
| CN212425760U (en) | Chemical nickel plating effluent treatment plant | |
| CN115676973A (en) | High-concentration complex wastewater treatment and resource recovery system and working method thereof | |
| CN211546233U (en) | Desulfurization waste water resourceful treatment system | |
| CN112811442A (en) | Process and system for refining salt by using high-salinity wastewater | |
| CN112479421A (en) | High-hardness wastewater softening and resource recycling system and method | |
| CN214087981U (en) | Resource recovery system of rare earth smelting wastewater |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200619 |