CN107487962B - System of getting rid of heavy metal in industrial waste water - Google Patents
System of getting rid of heavy metal in industrial waste water Download PDFInfo
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- CN107487962B CN107487962B CN201710926922.9A CN201710926922A CN107487962B CN 107487962 B CN107487962 B CN 107487962B CN 201710926922 A CN201710926922 A CN 201710926922A CN 107487962 B CN107487962 B CN 107487962B
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 87
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Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
Abstract
The invention discloses a treatment system for removing heavy metals in industrial wastewater, which comprises a water collecting well, a coarse grid, a primary sedimentation tank, a pH value adjusting tank, a protein-heavy metal ion chelation reaction tower, a centrifugal separator, an aeration nitrification tank, a biological denitrification tank, a secondary sedimentation tank, a water purifying tank and the like. The system creatively utilizes a spherical supporter attached with cysteine (Cys) bovine serum albumin as a surface contact reaction medium, when the wastewater containing heavy metal is contacted with the surface of the wastewater in a state of refining water mist, heavy metal ions in the wastewater and the cysteine (Cys) bovine serum albumin are subjected to chelation reaction through the induction action of metal binding peptide to generate a metal complex, and the complex is insoluble in water and can be removed through centrifugal separation operation. Meanwhile, the protein carrier ball is a low-value consumable product and can be replaced according to the use and consumption conditions.
Description
Technical Field
The invention relates to a treatment system for removing heavy metals in industrial wastewater, and belongs to the field of wastewater treatment in environmental protection.
Background
Heavy metal pollution refers to environmental pollution and ecological destruction caused by heavy metals and their compounds, and the degree of harm depends on the concentration and chemical form of heavy metals existing in the environment, food and organisms. Heavy metal pollution is mainly manifested in water pollution, and a part is in the atmosphere and solid waste. Heavy metal pollution is different from pollution of other organic compounds, and a great number of organic compounds can be purified through physical, chemical or biological effects of the nature, so that harmfulness is reduced or eliminated; heavy metals are rich and difficult to degrade in the environment.
From the aspect of environmental pollution, the most representative heavy metal pollution is heavy metals with significant biological toxicity, such as mercury, cadmium, lead and 'metalloid', arsenic and the like, and the heavy metals cannot be decomposed in a water environment, so that the toxicity is amplified after being drunk by human beings, and organic compounds with higher toxicity can be generated by combining the heavy metals with other toxins in the water.
At present, the existing industrial wastewater heavy metal treatment method comprises the following steps: chemical precipitation, electrolysis, adsorption, membrane separation, ion exchange, and the like.
(1) Chemical precipitation method: the chemical precipitation method is characterized in that a certain chemical substance is added into industrial wastewater to react with a certain soluble substance in the wastewater to generate insoluble salt to precipitate. Conventional chemical precipitation methods include neutralization precipitation, sulfide precipitation, and barium salt precipitation, among others.
(2) An electrolytic method: by applying the basic principle of electrolysis, heavy metal ions in the wastewater respectively undergo oxidation-reduction reactions on the anode and the cathode, so that the heavy metals are enriched, thereby removing the heavy metals in the wastewater and recovering the heavy metals. The electrolytic method for treating the heavy metal wastewater has the characteristics of reliable operation, high heavy metal removal rate, recyclability and the like. However, the electrolysis method is only suitable for treating high-concentration heavy metal wastewater due to large power consumption and high investment cost when the concentration of heavy metal is low.
(3) An adsorption method: the adsorption method is a method for adsorbing heavy metals in wastewater by using an adsorbent, and the traditional adsorbent comprises natural substances such as activated carbon, zeolite, clay minerals and the like. The activated carbon has strong adsorption capacity, high heavy metal removal rate, high price and short service life. In recent years, mineral materials have been found to have strong adsorption capacity, wherein natural zeolite has the strongest adsorption capacity and is the mineral material which is used for treating heavy metal wastewater at the earliest.
(4) Membrane separation method: the membrane separation method is a method for separating and concentrating a solute and a solvent by using a special semipermeable membrane under the action of external pressure without changing the chemical form of the solution. The membrane separation technology has the advantages of no phase change in the reaction process, high separation efficiency, convenient operation and maintenance, simultaneous separation and concentration, and capability of recovering valuable heavy metals. Common membrane technologies include microfiltration, ultrafiltration, nanofiltration, reverse osmosis, electrodialysis, liquid membranes, and the like.
(5) Ion exchange method: the ion exchange method for treating heavy metal wastewater is a method for removing heavy metal ions in wastewater by utilizing the exchange reaction between exchangeable ions on ion exchange resin and the heavy metal ions. Heavy metal in the waste water is got rid of to ion exchange technology, and the concentration of heavy metal ion is far less than the concentration of heavy metal ion in the chemical precipitation method processing back of going out water in the purification back play water, through retrieving the solution after the regeneration, can realize the recovery of heavy metal. The performance of the ion exchange resin has a great influence on the removal effect of the heavy metal ions.
Because the traditional treatment method has the defects of high cost, complex technology, unstable treatment effect and the like, the traditional treatment method needs to get rid of the existing treatment technical thought, develop a new way for treating the heavy metal in the industrial wastewater and further develop a brand new form of industrial wastewater heavy metal treatment technology.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a treatment system for removing heavy metals in industrial wastewater, which comprises a water collecting well, a coarse grid, a primary sedimentation tank, a pH value adjusting tank, a protein-heavy metal ion chelation reaction tower, a centrifugal separator, an aeration nitrification tank, a biological denitrification tank, a secondary sedimentation tank, a water purifying tank and the like; the industrial wastewater containing heavy metals enters a water collecting well through a wastewater pipeline, the outlet of the water collecting well is connected with a coarse grating through a wastewater pipeline, the outlet of the coarse grating is connected with a primary sedimentation tank through a wastewater pipeline, the outlet of the primary sedimentation tank is connected with a pH value adjusting tank through a wastewater pipeline, the outlet of the pH value adjusting tank is connected with a protein-heavy metal ion chelation reaction tower through a wastewater pipeline, the outlet of the protein-heavy metal ion chelation reaction tower is connected with a centrifugal separator through a wastewater pipeline, heavy metal sludge discharged in centrifugal separation operation is transported outwards, the outlet of the centrifugal separator is connected with an aeration nitrification tank through a wastewater pipeline, the outlet of the aeration nitrification tank is connected with a biological denitrification tank through a wastewater pipeline, the outlet of the biological denitrification tank is connected with a secondary sedimentation tank through a wastewater pipeline, the outlet of the secondary sedimentation tank is connected with a water purifying tank through a wastewater pipeline, and the outlet of the water purifying tank; wherein, the top of the protein-heavy metal ion chelation reaction tower is provided with a water inlet valve and is connected with a shunt conduit, the shunt conduit divides the water flow into five branches, the tail end of the shunt conduit is connected with five atomizing nozzles, the middle part of the reaction tower is filled with 11 layers of protein supporter spheres, the protein supporter spheres are attached with a mixture of cysteine and bovine serum albumin, the bottom of the reaction tower is provided with a water outlet valve, and the left lower part and the right upper part of the reaction tower are respectively provided with a maintenance window; the industrial wastewater after the pH value adjustment enters a reaction tower through a water inlet valve at the top of a protein-heavy metal ion chelation reaction tower, is sprayed onto a protein supporter ball in a fine water mist state after passing through a shunt conduit and an atomizing spray head, and is contacted with cysteine and bovine serum albumin attached to the surface of the protein supporter ball, so that the heavy metal ions in the wastewater and the cysteine bovine serum albumin are subjected to chelation reaction under the induction action of metal binding peptide to generate a metal complex, the complex is insoluble in water, is dispersed in the wastewater in a suspension form, is discharged out of the reaction tower along with the wastewater through a water outlet valve at the bottom of the reaction tower, enters a centrifugal separator, and is finally removed from the wastewater in a heavy metal-containing sludge form after being subjected to centrifugal treatment; wherein, the left lower part and the right upper part of the protein-heavy metal ion chelation reaction tower are respectively provided with a maintenance window, and workers can perform maintenance operation on 11 layers of protein supporter balls, shunt pipes and atomizing nozzles filled in the reaction tower through the maintenance windows; the pH value adjusting tank is used for adjusting the pH value of the wastewater subjected to primary precipitation to 6.5-8.0 so as to meet the requirement of the pH value of inlet water of the protein-heavy metal ion chelation reaction tower; wherein, the aeration nitrification tank is used for converting various nitrogen-containing substances in the wastewater into nitrate nitrogen through an aerobic aeration process; the biological denitrification tank is used for decomposing and converting nitrate nitrogen in the wastewater through a biological activity reaction process so as to remove the nitrate nitrogen.
Further, the protein-heavy metal ion chelation reaction tower is made of hard stainless steel, the outer layer of the tower body is wrapped by a waterproof heat-insulating material, and the effective volume of the tower body is 75m3The spraying angle of the atomizing nozzle is 45-90 degrees, the diameter of the atomized particles is 7.0-30 mu m, and the normal working water pressure is 30-90 kg.
Further, bovine serum albumin has a molecule consisting of 583 amino acids, a molecular weight of about 66000, and a molecular structure including 17 disulfide bonds.
The invention has the advantages that:
(1) the system breaks away from the existing industrial wastewater heavy metal purification treatment principle, creatively utilizes a spherical supporter attached with cysteine (Cys) bovine serum albumin as a surface contact reaction medium, when the wastewater containing heavy metal contacts the surface of the wastewater in a state of refining water mist, heavy metal ions in the wastewater and the cysteine (Cys) bovine serum albumin are subjected to chelation reaction through the induction action of metal binding peptide to generate a metal complex, and the complex is insoluble in water and can be removed through centrifugal separation operation. The heavy metal removal efficiency can reach 98.2%.
(2) The system adopts the design of the spherical protein supporter, improves the polymerization reaction efficiency and improves the processing capacity of the whole system; meanwhile, the protein carrier ball is a low-value consumable product, can be replaced according to the use and consumption conditions, and is low in replacement cost.
(3) The system adopts a means of chelating heavy metal ions by protein, and does not use any toxic chemical substance, thereby eliminating the risk of introducing new and more harmful pollutants.
(4) The system has the advantages of simple and easy principle, lower design and construction cost, better treatment effect and low operation and maintenance cost, and is favorable for large-scale popularization and application.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention.
In the figure: 1-a water collecting well, 2-a coarse grid, 3-a primary sedimentation tank, 4-a pH value adjusting tank, 5-a protein-heavy metal ion chelating reaction tower, 6-a centrifugal separator, 7-an aeration nitrification tank, 8-a biological denitrification tank, 9-a secondary sedimentation tank and 10-a water purifying tank.
FIG. 2 is a schematic diagram of a protein-heavy metal ion chelation reaction column.
51-water inlet valve, 52-shunt conduit, 53-atomizing spray head, 54-protein carrier ball, 55-maintenance window, 56-water outlet valve.
Detailed Description
The treatment system for removing heavy metals in industrial wastewater as shown in fig. 1 comprises a water collecting well 1, a coarse grid 2, a primary sedimentation tank 3, a pH value adjusting tank 4, a protein-heavy metal ion chelation reaction tower 5, a centrifugal separator 6, an aeration nitrification tank 7, a biological denitrification tank 8, a secondary sedimentation tank 9, a water purification tank 10 and the like; wherein the heavy metal-containing toolIndustrial wastewater enters a water collecting well 1 through a wastewater pipeline, centralized collection and preliminary stable adjustment are carried out, an outlet of the water collecting well 1 is connected with a coarse grating 2 through a wastewater pipeline to remove large-diameter solid matters in the industrial wastewater, an outlet of the coarse grating 2 is connected with a primary sedimentation tank 3 through a wastewater pipeline to further remove insoluble matters in the wastewater, an outlet of the primary sedimentation tank 3 is connected with a pH value adjusting tank 4 through a wastewater pipeline, the wastewater is neutralized and the pH value is accurately adjusted, the pH value range of the outlet water of the pH value adjusting tank 4 is 6.5-8.0 to meet the requirement of the pH value of the inlet water of a protein-heavy metal ion chelation reaction tower 5, an outlet of the pH value adjusting tank 4 is connected with the protein-heavy metal ion chelation reaction tower 5 through a wastewater pipeline, an outlet of the protein-heavy metal ion chelation reaction tower 5 is connected with a centrifugal separator 6 through a wastewater pipeline, the wastewater is centrifugally separated to realize the separation of suspended matters and the wastewater, heavy metal sludge discharged in the centrifugal separation operation is transported outwards, the separated wastewater is connected with an aeration nitrification tank 7 through a wastewater pipeline through an outlet of a centrifugal separator 6, in the aerobic aeration process, various nitrogen-containing substances in the wastewater are converted into nitrate nitrogen, the outlet of the aeration nitrification tank 7 is connected with the biological denitrification tank 8 through a wastewater pipeline, the function is to decompose and convert nitrate nitrogen in the wastewater through a biological activity reaction process so as to remove the nitrate nitrogen, the outlet of the biological denitrification tank 8 is connected with the secondary sedimentation tank 9 through a wastewater pipeline, the residual insoluble substances in the wastewater are completely removed, the outlet of the secondary sedimentation tank 9 is connected with a clean water tank 10 through a wastewater pipeline, and the outlet of the clean water tank 10 discharges the purified effluent treated by the system through the wastewater pipeline; wherein, the protein-heavy metal ion chelating reaction tower 5 is made of hard stainless steel, and the effective volume of the tower body is 75m3The outer layer is wrapped by waterproof heat-insulating materials, the top of the reaction tower is provided with a water inlet valve 51 and is connected with a shunt conduit 52, the shunt conduit 52 divides water flow into five branches, the tail end of the five branches is connected with five atomizing nozzles 53, the atomizing nozzles 53 have the atomizing angle of 45-90 degrees, the diameter of atomizing particles is 7.0-30 mu m, the normal working water pressure is 30-90 kg, the middle part of the reaction tower is filled with 11 layers of protein carrier balls 54, and the attachment on the protein carrier balls 54 is cysteine(Cys) bovine serum albumin mixture, its molecule is formed by 583 amino acids, the molecular weight is about 66000, its molecular structure contains 17 pairs of disulfide bonds, its high-order structure of spheroidicity can be divided into 3 structural domains, the bottom of the reaction column is equipped with the outlet valve 56, the left inferior part and upper right part of the reaction column have a maintenance window 55 separately; the industrial wastewater after the pH value adjustment treatment (the pH value after the treatment is 6.5-8.0) enters the reaction tower through a water inlet valve 51 at the top of a protein-heavy metal ion chelation reaction tower 5, is sprayed onto a protein supporter ball 54 in a fine water mist state after passing through a shunt pipe 52 and an atomizing nozzle 53, is contacted with cysteine (Cys) and bovine serum albumin attached to the surface of the protein supporter ball, and is subjected to a chelation reaction between the heavy metal ions in the wastewater and the cysteine (Cys) bovine serum albumin through the induction action of metal binding peptide to generate a metal complex which is insoluble in water, is dispersed in the wastewater in a suspended matter form, is discharged out of the reaction tower along with the wastewater through a water outlet valve 56 at the bottom of the reaction tower, enters a centrifugal separator 6, and is finally removed from the wastewater in a heavy metal-containing sludge form after the centrifugal treatment; wherein, the left lower part and the right upper part of the protein-heavy metal ion chelation reaction tower 5 are respectively provided with a fan of maintenance window 55, and workers can perform maintenance operation on 11 layers of protein supporter balls 54, the shunt pipe 52 and the atomizing nozzle 53 filled in the reaction tower through the windows.
The heavy metal removal efficiency of the industrial wastewater treated by the system can reach 98.2%.
Claims (1)
1. A system for removing heavy metals in industrial wastewater is characterized by comprising a water collecting well, a coarse grid, a primary sedimentation tank, a pH value adjusting tank, a protein-heavy metal ion chelation reaction tower, a centrifugal separator, an aeration nitrification tank, a biological denitrification tank, a secondary sedimentation tank and a water purifying tank; wherein, industrial wastewater containing heavy metals enters a collecting well through a wastewater pipeline, an outlet of the collecting well is connected with a coarse grating through a wastewater pipeline, an outlet of the coarse grating is connected with a primary sedimentation tank through a wastewater pipeline, an outlet of the primary sedimentation tank is connected with a pH value adjusting tank through a wastewater pipeline, and an outlet of the pH value adjusting tank is connected with a wastewater pipelineThe device comprises a protein-heavy metal ion chelation reaction tower, wherein the outlet of the protein-heavy metal ion chelation reaction tower is connected with a centrifugal separator through a wastewater pipeline, heavy metal sludge discharged in centrifugal separation operation is transported outwards, the outlet of the centrifugal separator is connected with an aeration nitrification tank through a wastewater pipeline, the outlet of the aeration nitrification tank is connected with a biological denitrification tank through a wastewater pipeline, the outlet of the biological denitrification tank is connected with a secondary sedimentation tank through a wastewater pipeline, the outlet of the secondary sedimentation tank is connected with a water purification tank through a wastewater pipeline, and the outlet of the water purification tank discharges purified effluent after treatment through a wastewater pipeline; wherein, the top of the protein-heavy metal ion chelation reaction tower is provided with a water inlet valve and is connected with a shunt conduit, the shunt conduit divides water flow into five branches, the tail end of the shunt conduit is connected with five atomizing nozzles, the atomizing nozzles have a spraying angle of 45 degrees, the diameter of atomized particles is 7.0-30 μm, the normal working water pressure is 30-90 kg, the middle part of the reaction tower is filled with 11 layers of protein supporter balls, the mixture of cysteine and bovine serum albumin is attached to the protein supporter balls, the bottom of the reaction tower is provided with a water outlet valve, and the left lower part and the right upper part of the reaction tower are respectively provided with an overhaul window; the industrial wastewater after the pH value adjustment enters a reaction tower through a water inlet valve at the top of a protein-heavy metal ion chelation reaction tower, is sprayed onto a protein supporter ball in a fine water mist state after passing through a shunt conduit and an atomizing spray head, and is contacted with cysteine and bovine serum albumin attached to the surface of the protein supporter ball, so that the heavy metal ions in the wastewater are chelated with the cysteine and the bovine serum albumin under the induction action of metal binding peptide to generate a metal complex, the complex is insoluble in water, is dispersed in the wastewater in a suspension form, is discharged out of the reaction tower along with the wastewater through a water outlet valve at the bottom of the reaction tower, enters a centrifugal separator, and is finally removed from the wastewater in a heavy metal-containing sludge form after being subjected to centrifugal treatment; wherein, the left lower part and the right upper part of the protein-heavy metal ion chelation reaction tower are respectively provided with a maintenance window, and workers can perform maintenance operation on 11 layers of protein supporter balls, shunt pipes and atomizing nozzles filled in the reaction tower through the maintenance windows; wherein the pH value adjusting tank is used for adjusting the pH value of the wastewater subjected to primary precipitation to 6.5-8.0 to meet the requirementThe pH value of the inlet water of the protein-heavy metal ion chelation reaction tower is required; wherein, the aeration nitrification tank is used for converting various nitrogen-containing substances in the wastewater into nitrate nitrogen through an aerobic aeration process; wherein, the biological denitrification tank is used for decomposing and converting nitrate nitrogen in the wastewater through a biological activity reaction process so as to remove the nitrate nitrogen, the protein-heavy metal ion chelation reaction tower is made of hard stainless steel, the outer layer of the protein-heavy metal ion chelation reaction tower is wrapped by a waterproof heat-insulating material, and the effective volume of the tower body is 75m3。
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| CN201710926922.9A CN107487962B (en) | 2015-12-31 | 2015-12-31 | System of getting rid of heavy metal in industrial waste water |
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| CN201511013548.0A CN105621793B (en) | 2015-12-31 | 2015-12-31 | A kind of processing system for removing heavy metals in industrial wastewater |
| CN201710926922.9A CN107487962B (en) | 2015-12-31 | 2015-12-31 | System of getting rid of heavy metal in industrial waste water |
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| CN201511013548.0A Division CN105621793B (en) | 2015-12-31 | 2015-12-31 | A kind of processing system for removing heavy metals in industrial wastewater |
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| CN201710926920.XA Active CN107459230B (en) | 2015-12-31 | 2015-12-31 | System of getting rid of heavy metal in industrial waste water |
| CN201511013548.0A Expired - Fee Related CN105621793B (en) | 2015-12-31 | 2015-12-31 | A kind of processing system for removing heavy metals in industrial wastewater |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103570802A (en) * | 2012-08-06 | 2014-02-12 | 江南大学 | Chelate formed by glutathione and transition metal ions and application thereof |
| CN103601315A (en) * | 2013-11-12 | 2014-02-26 | 西南科技大学 | Method for treating heavy metal wastewater in mining and metallurgy by use of waste tea dust |
| CN104829058A (en) * | 2015-05-08 | 2015-08-12 | 杭州师范大学 | Simultaneous nitrogen removal and heavy metal recovering process method for waste water and special system for process method |
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| JP2013006174A (en) * | 2011-05-24 | 2013-01-10 | Hakki Sangyo Kk | Flocculant composition and flocculation method for purifying dye wastewater |
| CN102432123A (en) * | 2011-11-03 | 2012-05-02 | 北京大学 | Reproducible heavy metal complexing agent and application method thereof |
| US9522830B2 (en) * | 2012-10-10 | 2016-12-20 | Jrw Bioremediation Llc | Composition and method for remediation of contaminated water |
| CN104671621B (en) * | 2015-01-28 | 2016-08-24 | 徐明好 | A kind of processing method of urban wastewater treatment firm mud |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103570802A (en) * | 2012-08-06 | 2014-02-12 | 江南大学 | Chelate formed by glutathione and transition metal ions and application thereof |
| CN103601315A (en) * | 2013-11-12 | 2014-02-26 | 西南科技大学 | Method for treating heavy metal wastewater in mining and metallurgy by use of waste tea dust |
| CN104829058A (en) * | 2015-05-08 | 2015-08-12 | 杭州师范大学 | Simultaneous nitrogen removal and heavy metal recovering process method for waste water and special system for process method |
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| CN107459230A (en) | 2017-12-12 |
| CN107487962A (en) | 2017-12-19 |
| CN105621793A (en) | 2016-06-01 |
| CN107459230B (en) | 2020-11-06 |
| CN105621793B (en) | 2017-12-12 |
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