CN103030205A - Method for preparing dangerous heavy metal removing agent in electroplating wastewater and application thereof - Google Patents
Method for preparing dangerous heavy metal removing agent in electroplating wastewater and application thereof Download PDFInfo
- Publication number
- CN103030205A CN103030205A CN2012105345593A CN201210534559A CN103030205A CN 103030205 A CN103030205 A CN 103030205A CN 2012105345593 A CN2012105345593 A CN 2012105345593A CN 201210534559 A CN201210534559 A CN 201210534559A CN 103030205 A CN103030205 A CN 103030205A
- Authority
- CN
- China
- Prior art keywords
- heavy metal
- electroplating wastewater
- dangerous
- carbon disulfide
- preparation
- 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.)
- Granted
Links
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a method for preparing a dangerous heavy metal removing agent in electroplating wastewater and application thereof. The method comprises the following steps of: 1), fully reacting tetraethylenepentamine and carbon disulfide under an alkaline environment; and 2), adding epoxy chloropropane into a reactive product in the step 1) to fully react, and finally, blowing away redundant carbon disulfide by nitrogen, wherein the mass ratio of tetraethylenepentamine and carbon disulfide is 1 to (1.8-3.2), and the mass ratio of carbon disulfide and epoxy chloropropane is 1 to (7.5-10). The dangerous heavy metal removing agent is wide in application range, has a good deposition effect, and is completely deposited and dosage-type; heavy metal ions can be separated out without adding other auxiliary flocculating agents, and secondary pollution is avoided; the method is easy in using method, low in cost, simple in preparation process and easy to operate; hexavalent chromium can be directly reduced into trivalent chromium; the trivalent chromium is removed in a complexing mode; and a chromium breaking agent is not needed to be added.
Description
Technical field
The present invention relates to the preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater.
Background technology
Heavy metal wastewater thereby refers to the waste water that contains heavy metal of discharging in the Industrial processes such as mining and metallurgy, machinofacture, chemical industry, electronics, instrument, classify according to contained heavy metal element in the heavy metal wastewater thereby, generally can be divided into and contain chromium (Cr) waste water, nickeliferous (Ni) waste water, contain cadmium (Cd) waste water, cupric (Cu) waste water, contain zinc (Zn) waste water, contain gold (Au) waste water, argentiferous (Ag) waste water etc.Heavy metal wastewater thereby is that environmental pollution is the most serious and the mankind are endangered one of maximum trade effluent, heavy metal pollution of water body has become global problem of environmental pollution, and having a strong impact on children and adult's healthy and even life, can cause gout sample syndromes if absorbed too much molybdenum element such as human body, arthrodynia and deformity, kidney is impaired, and growth retardation is arranged, arteriosclerosis, the illnesss such as sheath sex change.Current, children ' s lead poisoning, heavy metal causes fetal anomaly, and the events such as arseniasis also occur repeatedly, and heavy metal contamination are become be related to the great environmental problem of human health and life.
Dangerous heavy metal in the waste water generally can not decompose destruction, can only shift its location and change its Material Form.Treatment process is to process on the spot (as not discharging production plant) in the production site, because heavy metal ion can make biochemical bacterium poison, not easy to operate, so generally do not adopt biochemical processing method, normal chemical precipitation method (precipitator method and oxidation reduction process are arranged), ion exchange method, electrolytic process, absorption method, reverse osmosis method, the evaporation concentration etc. of adopting are processed, and heavy metal is lower than emission standard and can discharges or reuse in the water after the processing.Such as CN101081359A xanthation bentone adsorbent heavy metal is carried out adsorption treatment; And ion exchange method running cost is low, but can produce excessive regeneration waste liquid, and the cycle of operation is longer, organic existence meeting contaminated ion exchange resin, the shortcoming such as the water treatment amount is less.
Chemical precipitation method is present treatment process the most widely: the water-fast precipitation by metallic ion of dangerous heavy metal reaction generation in the chemical agent that adopts effects such as having sequestering action, coagulation, flocculation and the waste water, reduce heavy metal content in the water by spoil disposal.Method the earliest is that interpolation PAC, ferrous sulfate inorganic coagulant react, add lime, caustic soda adjusting waste water ph, add at last PAM and carry out flocculation sediment, and the form of heavy metal ion with metal hydroxides is precipitated out,, also be good method and remove heavy metal with sulfide, method such as a CN101759311A controlling various forms of heavy metals in process of wastewater treatment, heavy metal sulfide produces precipitation under alkaline case, regulate pH to be and alkalescence, and removal effect is good.But because metal ion oxyhydroxide has certain solubleness in water, so be difficult to the full scale clearance metal ion, and the throw out that generates and unstable runs into acid rain etc. and does the time spent and still can be partly dissolved, and causes secondary pollution; And when using the sulfide removal heavy metal wastewater thereby, not good for water-soluble heavy metal complex removal effect, and secondary pollution appears easily, the water outlet heavy metal content is difficult to reach discharging standards.
Summary of the invention
The preparation method who the purpose of this invention is to provide the dangerous heavy metal remover of a kind of electroplating wastewater.
The technical solution used in the present invention is:
The preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater may further comprise the steps:
1) tetraethylene pentamine and dithiocarbonic anhydride are fully reacted in alkaline environment;
2) in the reaction product of step 1), add epoxy chloropropane and react fully, blow away unnecessary dithiocarbonic anhydride with nitrogen at last and get final product;
Wherein, the mass ratio of tetraethylene pentamine and dithiocarbonic anhydride is 1:(1.8-3.2), the mass ratio of dithiocarbonic anhydride and epoxy chloropropane is 1:(7.5-10).
The pH of described alkaline environment is 9-12.
In the step 1), temperature of reaction is 30-40 ℃.
Step 2) in, temperature of reaction is 75-85 ℃.
Step 2) in, the reaction times is 4-8h.
The application of heavy metal remover in removing the dangerous heavy metal of electroplating wastewater.
The invention has the beneficial effects as follows: the dangerous heavy metal remover of product of the present invention applied range, sedimentation effect is good, thorough, and has a formulation, and the auxiliary flocculation agent that need not add other can be the heavy metal ion molecule out, do not produce secondary pollution, using method is simple, cost is low; Preparation technology is simple, easily operation; Can become trivalent chromium and complexing to remove by the direct-reduction sexavalent chrome, need not to add brokenly the chromium agent.
Embodiment
The present invention is described further below in conjunction with specific embodiment:
Embodiment 1:
The preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater may further comprise the steps:
1) tetraethylene pentamine and dithiocarbonic anhydride are reacted 2-4h in potassium hydroxide solution, the temperature of reaction is 30-40 ℃, and the pH of reaction system is 9-12;
2) add epoxy chloropropane in the reaction system of step 1) and react fully, the temperature of reaction is 75-85 ℃, and the reaction times is 4-6h; Blowing away unnecessary dithiocarbonic anhydride with nitrogen at last gets final product;
Wherein, the mass ratio of tetraethylene pentamine and dithiocarbonic anhydride is 1:2, and the mass ratio of dithiocarbonic anhydride and epoxy chloropropane is 1:8.
Embodiment 2:
The preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater may further comprise the steps:
1) tetraethylene pentamine and dithiocarbonic anhydride are reacted 2-4h in potassium hydroxide solution, the temperature of reaction is 30-40 ℃, and the pH of reaction system is 9-12;
2) add epoxy chloropropane in the reaction system of step 1) and react fully, the temperature of reaction is 75-85 ℃, and the reaction times is 4-6h; Blowing away unnecessary dithiocarbonic anhydride with nitrogen at last gets final product;
Wherein, the mass ratio of tetraethylene pentamine and dithiocarbonic anhydride is 1:2.5, and the mass ratio of dithiocarbonic anhydride and epoxy chloropropane is 1:9.
Embodiment 3:
The preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater may further comprise the steps:
1) tetraethylene pentamine and dithiocarbonic anhydride are reacted 2-4h in potassium hydroxide solution, the temperature of reaction is 30-40 ℃, and the pH of reaction system is 9-12;
2) add epoxy chloropropane in the reaction system of step 1) and react fully, the temperature of reaction is 75-85 ℃, and the reaction times is 4-6h; Blowing away unnecessary dithiocarbonic anhydride with nitrogen at last gets final product;
Wherein, the mass ratio of tetraethylene pentamine and dithiocarbonic anhydride is 1:3, and the mass ratio of dithiocarbonic anhydride and epoxy chloropropane is 1:10.
In order to verify the removal effect of explanation heavy metal remover of the present invention, illustrate in conjunction with concrete application examples now:
Application examples 1:
Get 250mL analog electrical waste electroplating, the pH value is 2, copper wherein, nickel, zinc content 10mg/L, sexavalent chrome 5mg/L, the product heavy metal remover of the present invention (getting the remover of embodiment 1) that adds different amounts stirred 3 minutes, regulate pH value to 8 with alkali lye, add polyacrylamide solution (concentration is 0.05wt%) in the sewage again and help solidifying (the polyacrylamide at last concentration in sewage is 500ppm), stir 1min, form the large and closely knit brown mud of floc sedimentation, left standstill 15 minutes, get supernatant liquor, adopt atomic absorption spectrophotometer to carry out heavy metal content and detect, concrete data such as following table 1:
Application examples 2:
Get Guangzhou economic and technological development zone company electroplating wastewater and process experiment, wherein waste water contains zinc 15mg/L, nickeliferous 2 mg/L, wastewater pH 2-3, adding different amounts product heavy metal remover of the present invention stirred 2 minutes, regulate pH value to 8 with alkali lye, add polyacrylamide solution (concentration is 0.05wt%) in the sewage again and help solidifying (the polyacrylamide at last concentration in sewage is 300ppm), stirred 1 minute, form the large and closely knit brown mud of floc sedimentation, left standstill 15 minutes, get supernatant liquor, adopt atomic absorption spectrophotometer to carry out heavy metal content and detect, concrete data such as following table 2:
Interpretation of result: from above several groups of data, heavy metal remover of the present invention can effectively be removed harmful heavy metal in the electroplating wastewater, and the ability of stronger seizure trace heavy metal element is arranged, and is environmental protection medicament of new generation.
Claims (6)
1. the preparation method of the dangerous heavy metal remover of an electroplating wastewater is characterized in that: may further comprise the steps:
1) tetraethylene pentamine and dithiocarbonic anhydride are fully reacted in alkaline environment;
2) in the reaction product of step 1), add epoxy chloropropane and react fully, blow away unnecessary dithiocarbonic anhydride with nitrogen at last and get final product;
Wherein, the mass ratio of tetraethylene pentamine and dithiocarbonic anhydride is 1:(1.8-3.2), the mass ratio of dithiocarbonic anhydride and epoxy chloropropane is 1:(7.5-10).
2. the preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater according to claim 1, it is characterized in that: the pH of described alkaline environment is 9-12.
3. the preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater according to claim 1, it is characterized in that: in the step 1), temperature of reaction is 30-40 ℃.
4. the preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater according to claim 1 is characterized in that: step 2) in, temperature of reaction is 75-85 ℃.
5. the preparation method of the dangerous heavy metal remover of a kind of electroplating wastewater according to claim 1 is characterized in that: step 2) in, the reaction times is 4-8h.
6. the application of the heavy metal remover of claim 1 preparation in removing the dangerous heavy metal of electroplating wastewater.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534559.3A CN103030205B (en) | 2012-12-12 | 2012-12-12 | Method for preparing dangerous heavy metal removing agent in electroplating wastewater and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210534559.3A CN103030205B (en) | 2012-12-12 | 2012-12-12 | Method for preparing dangerous heavy metal removing agent in electroplating wastewater and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103030205A true CN103030205A (en) | 2013-04-10 |
| CN103030205B CN103030205B (en) | 2014-02-19 |
Family
ID=48017665
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210534559.3A Active CN103030205B (en) | 2012-12-12 | 2012-12-12 | Method for preparing dangerous heavy metal removing agent in electroplating wastewater and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103030205B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693781A (en) * | 2013-12-26 | 2014-04-02 | 山东华升化工科技有限公司 | Method for treating chromium plating wastewater through composited flocculation method and chelation method |
| CN103693782A (en) * | 2013-12-26 | 2014-04-02 | 山东华升化工科技有限公司 | Method for treating chrome tanning wastewater through composited flocculation method and chelation method |
| CN108585076A (en) * | 2018-05-18 | 2018-09-28 | 中国石油化工股份有限公司 | Dithiocarbamates water purification agent and the preparation method and application thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3265667A (en) * | 1962-12-31 | 1966-08-09 | Union Oil Co | Cross-linked polythiourea resins |
| JPS4965053A (en) * | 1972-10-25 | 1974-06-24 | ||
| JPH0965053A (en) * | 1995-08-29 | 1997-03-07 | Olympus Optical Co Ltd | Scanner |
| US5658487A (en) * | 1995-02-17 | 1997-08-19 | Betz Laboratories, Inc. | Polymeric dithiocarbamate acid salt compositions and method of use |
| CN1323747A (en) * | 2001-06-01 | 2001-11-28 | 黄翠萍 | High molecular heavy metals trapping precipitant |
| CN101314492A (en) * | 2007-05-29 | 2008-12-03 | 陈德琪 | Method for preparing novel remover for heavy metal ion and application thereof |
| CN102603046A (en) * | 2012-04-05 | 2012-07-25 | 环境保护部华南环境科学研究所 | Heavy metal ion complexing agent, preparation method and applications thereof |
-
2012
- 2012-12-12 CN CN201210534559.3A patent/CN103030205B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3265667A (en) * | 1962-12-31 | 1966-08-09 | Union Oil Co | Cross-linked polythiourea resins |
| JPS4965053A (en) * | 1972-10-25 | 1974-06-24 | ||
| US5658487A (en) * | 1995-02-17 | 1997-08-19 | Betz Laboratories, Inc. | Polymeric dithiocarbamate acid salt compositions and method of use |
| JPH0965053A (en) * | 1995-08-29 | 1997-03-07 | Olympus Optical Co Ltd | Scanner |
| CN1323747A (en) * | 2001-06-01 | 2001-11-28 | 黄翠萍 | High molecular heavy metals trapping precipitant |
| CN101314492A (en) * | 2007-05-29 | 2008-12-03 | 陈德琪 | Method for preparing novel remover for heavy metal ion and application thereof |
| CN102603046A (en) * | 2012-04-05 | 2012-07-25 | 环境保护部华南环境科学研究所 | Heavy metal ion complexing agent, preparation method and applications thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郑怀礼等: "一种重金属离子吸附捕集剂的合成及性能研究", 《化学研究与应用》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103693781A (en) * | 2013-12-26 | 2014-04-02 | 山东华升化工科技有限公司 | Method for treating chromium plating wastewater through composited flocculation method and chelation method |
| CN103693782A (en) * | 2013-12-26 | 2014-04-02 | 山东华升化工科技有限公司 | Method for treating chrome tanning wastewater through composited flocculation method and chelation method |
| CN108585076A (en) * | 2018-05-18 | 2018-09-28 | 中国石油化工股份有限公司 | Dithiocarbamates water purification agent and the preparation method and application thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103030205B (en) | 2014-02-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102311182B (en) | Electroplating wastewater treatment method | |
| Patterson et al. | Physical-chemical methods of heavy metals removal | |
| CN102923874B (en) | Method for processing wastewater containing heavy metal ions | |
| CN104909497A (en) | Method for treating acid waste water of nonferrous metal mine | |
| CN102765831A (en) | Purification method of wastewater containing heavy metal and arsenic | |
| JP5434663B2 (en) | Cyanide-containing wastewater treatment method and treatment equipment | |
| US20090120881A1 (en) | Treatment blends for removing metals from wastewater, methods of producing and process of using the same | |
| CN101648735A (en) | Environmental functional material applied to electroplating wastewater treatment | |
| CN101428933B (en) | Biological agent cooperated hydrolyzation-blowing off treatment process for nickel-ammonia wastewater | |
| CN101628750A (en) | Sulfide heavy metal chelating agent and preparation method thereof | |
| CN104787928A (en) | Recovery processing method of stainless steel acid pickling waste liquid containing iron, chromium and nickel | |
| CN106977013B (en) | Purification treatment method of high-chlorine thallium-containing wastewater and application thereof | |
| CN109641766A (en) | For handling and repairing the composition and method of aqueous wash streams | |
| CN110980866A (en) | Method for deeply removing zinc-nickel alloy electroplating wastewater | |
| CN103030205B (en) | Method for preparing dangerous heavy metal removing agent in electroplating wastewater and application thereof | |
| Naim et al. | Precipitation chelation of cyanide complexes in electroplating industry wastewater | |
| CN112811663A (en) | High-concentration chromium-containing wastewater treatment method for reducing sludge production | |
| Lochyński et al. | Research on neutralization of wastewater from pickling and electropolishing processes | |
| CA2251480A1 (en) | Waste treatment of metal plating solutions | |
| WO2014076375A1 (en) | Method for recovery of metals | |
| Germain et al. | Plating and cyanide wastes | |
| CN112520810A (en) | Heavy metal capturing material and application thereof | |
| CN113429020A (en) | Method for removing heavy metal ions in acidic wastewater | |
| CN106915812A (en) | A kind of chemical nickle-plating wastewater inorganic agent and preparation method thereof | |
| CN106007057B (en) | Treatment method of COD (chemical oxygen demand) and ammonia nitrogen mixed waste liquid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160125 Address after: 511338 Guangdong city of Guangzhou province Zengcheng Xintang Zhen Sha Pu Silver City Development Zone Patentee after: Zengcheng City high-tech Shuangjiang purifying agent Ltd. Address before: 523000 10C, Lido garden, Changping Town, Dongguan City, Guangdong province 10 Patentee before: Liu Jinlong |