CN1242932C - Technological method of producing low concentration heaving metal sewage treatment agent - Google Patents
Technological method of producing low concentration heaving metal sewage treatment agent Download PDFInfo
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- CN1242932C CN1242932C CN 03126365 CN03126365A CN1242932C CN 1242932 C CN1242932 C CN 1242932C CN 03126365 CN03126365 CN 03126365 CN 03126365 A CN03126365 A CN 03126365A CN 1242932 C CN1242932 C CN 1242932C
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- 238000000034 method Methods 0.000 title claims abstract description 6
- 229910052751 metal Inorganic materials 0.000 title description 3
- 239000002184 metal Substances 0.000 title description 3
- 239000010865 sewage Substances 0.000 title description 2
- 239000000741 silica gel Substances 0.000 claims abstract description 88
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 88
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 82
- 229960001866 silicon dioxide Drugs 0.000 claims abstract description 81
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 29
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 238000005406 washing Methods 0.000 claims abstract description 12
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims abstract description 7
- LRCFXGAMWKDGLA-UHFFFAOYSA-N dioxosilane;hydrate Chemical compound O.O=[Si]=O LRCFXGAMWKDGLA-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229960004029 silicic acid Drugs 0.000 claims abstract description 7
- NOWKCMXCCJGMRR-UHFFFAOYSA-N Aziridine Chemical compound C1CN1 NOWKCMXCCJGMRR-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 6
- 229910021645 metal ion Inorganic materials 0.000 claims abstract description 5
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 17
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 15
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 9
- 238000003672 processing method Methods 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 6
- 238000005554 pickling Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 230000037396 body weight Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 3
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 230000036571 hydration Effects 0.000 claims description 3
- 238000006703 hydration reaction Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 239000012047 saturated solution Substances 0.000 claims description 3
- 238000002444 silanisation Methods 0.000 claims description 3
- 235000019786 weight gain Nutrition 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 150000002500 ions Chemical class 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- WLZRMCYVCSSEQC-UHFFFAOYSA-N cadmium(2+) Chemical compound [Cd+2] WLZRMCYVCSSEQC-UHFFFAOYSA-N 0.000 abstract description 3
- 229910001430 chromium ion Inorganic materials 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 3
- 238000001179 sorption measurement Methods 0.000 abstract description 3
- 239000010814 metallic waste Substances 0.000 abstract 2
- 238000004065 wastewater treatment Methods 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 229920000642 polymer Polymers 0.000 abstract 1
- 229920006395 saturated elastomer Polymers 0.000 abstract 1
- 239000011555 saturated liquid Substances 0.000 abstract 1
- 239000002356 single layer Substances 0.000 abstract 1
- 239000002351 wastewater Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 230000000274 adsorptive effect Effects 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 229910052793 cadmium Inorganic materials 0.000 description 2
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000003456 ion exchange resin Substances 0.000 description 2
- 229920003303 ion-exchange polymer Polymers 0.000 description 2
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000005201 scrubbing Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- KSCAZPYHLGGNPZ-UHFFFAOYSA-N 3-chloropropyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)CCCCl KSCAZPYHLGGNPZ-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- PKMNZOFQIRXQDO-UHFFFAOYSA-N heptane;hexane Chemical compound CCCCCC.CCCCCCC PKMNZOFQIRXQDO-UHFFFAOYSA-N 0.000 description 1
- 150000001455 metallic ions Chemical class 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- OOXSLJBUMMHDKW-UHFFFAOYSA-N trichloro(3-chloropropyl)silane Chemical compound ClCCC[Si](Cl)(Cl)Cl OOXSLJBUMMHDKW-UHFFFAOYSA-N 0.000 description 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Landscapes
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Water Treatment By Sorption (AREA)
Abstract
The present invention provides a technical method for producing a heavy metal waste water treatment agent with low concentration, which belongs to the treating technology of metal ions. A treatment agent which is produced by the present invention has stronger selectivity and adsorption capacity to heavy metal ions, particularly chromium ions and cadmium ions so as to adsorb and remove heavy metal ions in liquid to reach the goal of water quality treatment, and moreover, the heavy metal ions are recovered according to requirements. The technical method of the present invention mainly comprises the steps: adding in an equivalent acid, the weight of which is 1.5 times more than that of original silica gel, for carrying out heating and acid washing to the original silica gel; introducing wet air from a reaction still of sodium bromide/potassium bromide saturated liquid to water vapor saturated air provided with silica gel so as to cause the surface of the silica gel to generate a water molecular single layer; carrying out silanizing reaction to hydrated silica gel and a hexane and silane coupling agent to obtain silanized silica gel; carrying out graft reaction to the silanized silica gel and an ethylenimine polymer so as to obtain a heavy metal waste water treatment agent with low concentration of the present invention.
Description
Affiliated technical field
The invention belongs to the metal ion treatment technology, what relate generally to is a kind of processing method of producing the low concentration heavy metal water treatment agent.
Background technology
The main effect of treatment agent provided by the present invention relates to the processing to heavy metal wastewater thereby, and the heavy metal that is about in the waste water is removed as other heavy metal absorption that exists in lead, cadmium, mercury, chromium, copper and the waste water, makes waste water reach the heavy metal concentration and the total amount of permission.Also can be used for the elementary recovery of counterweight underground metal mining, the processing of municipal wastewater, trade effluent etc. relates to the social concern of environmental pollution and human body health.At present more to the treatment technology scheme of waste water, as: chemicals purifying treatment, ion exchange resin adsorption treatment etc., but the above measure effect that absorption is also removed to the heavy metal in the water is not satisfactory.
Summary of the invention
Purpose of the present invention promptly is to propose a kind of processing method of producing the low concentration heavy metal water treatment agent, its treatment agent of producing especially has stronger selectivity and adsorptive power to chromium ion, cadmium ion to heavy metal ion, thereby with the heavy metal ion adsorbed removal in the liquid, reach the purpose of water conditioning, and make heavy metal ion obtain reclaiming as required.
The present invention realizes that processing method that above-mentioned purpose is taked comprises several steps in the following order:
Former silica gel is added in the reactor of corrosion resistant band stirring, add the normal acid of silica gel weight more than 1.5 times from elevated dosing vessel then, carry out heated and boiled and slowly stirring, in order to avoid damage silica gel; Stirring and pickling under bubble point temperature, the greasy dirt of flush away silica gel and the metal ion of surface attachment; To the logical cooling water temperature of chuck of reactor, make and emit silica gel when temperature of charge drops to normal temperature in the still then; The silica gel of emitting is in the filtration washing device, and the elimination acid solution is washed silica gel with deionized water then, stops washing when washing water show neutrality, carries out separating of silica gel and water, then silica gel is dried; When silica gel reaches constant weight, take out, enter next procedure.
Putting in the water vapor saturex through pickling and the silica gel that is dried to constant weight, start the damp atmosphere that air compressor bromizates sodium or Potassium Bromide saturated solution reactor and enter in the water vapor saturex, make the silica gel surface generate the water molecules individual layer; Between 2.0-5.0%, hydration is finished to the water ratio that records hydrated silica gel.
Hydrated silica gel is put into the reactor that another corrosion resistant band stirs, hexane elevated dosing vessel and silane coupling agent elevated dosing vessel through this reactor top, in reactor, put the hexane of quite former silica gel weight more than two times, the silane coupling agent more than 0.5 times into respectively, slowly mix then; Silica gel carries out the Silanization reaction under the normal temperature in reactor, the reaction times should guarantee more than 10 hours; Carry out separating of silica gel and raffinate after reaction is finished, again silanized silica gel is washed; Washed silanized silica gel is dried, get final product when the rate of body weight gain that records silanized silica gel is between 15-22%, this is a silanized silica gel.
Silanized silica gel is added in the reactor of a corrosion resistant band stirring, to reactor, add ethyleneimine polymkeric substance and deionized water from elevated dosing vessel respectively then, slowly mix; When temperature of reaction drops to below 40 ℃, add quite former silica gel weight 0.5-1.5 methyl alcohol doubly again, adding the back, to feed in reacting kettle jacketing that hot water heats and keep the reacting kettle jacketing water temperature be slowly to stir below 69 ℃, silica gel after recording grafting be former silica gel weight more than 1.5 times the time, grafting is finished.Graft reaction will wash after grafting silica gel and the solution separating after finishing.Wherein, the add-on of ethyleneimine polymkeric substance requires to be equal in weight with former silica gel at least, and it is more than the twice of former silica gel weight that the deionized water add-on requires.Dry and record water ratio, obtain low concentration heavy metal water treatment agent material of the present invention in 10% discharging when following.
The low concentration heavy metal water treatment agent that processing method of the present invention obtained, it has very strong selectivity and adsorptive power to the heavy metal ion in liquid, formed inner complex is fixed on the silica gel active surface, but it can other light metal ion of chelating, as sodium, potassium, calcium, zinc etc., and there is the absorption that also can not influence heavy metal ion in these ionic.The treatment agent that the present invention obtained only needs the simple operation condition just can be used for handling heavy metal ion, as mercury, chromium, cadmium, lead, copper etc., and can recycle for 3000 times, and its adsorptive power just descends 10%.Since its unique selectivity and adsorptive power, and desorption process is very simple, the poisonous and harmful heavy metallic ion obtains recycling through concentrating, and treated water quality is effectively improved.Particularly processing, foodstuffs industry water and the tap water trace heavy metal ionic of nuclear industry waste water are removed so this treatment agent can be widely used in trade effluent, the fields such as elementary recovery of heavy metal ore deposit exploitation, to environmental improvement and human health, realize that the resources sustainable development strategy is very useful.
The low concentration heavy metal water treatment agent than the about soon 1-2 of the adsorption function of traditional chelating ion exchange resin doubly.Functional group is fixed on the silica gel with the covalent linkage form, has special performance, only needs the simple operation condition just to can be used to handle heavy metal cation and oxygen metal negatively charged ion, especially chromium ion, the cadmium ion of removing in the sewage is had special efficacy.
Embodiment
The following examples can make those skilled in the art more fully understand processing method of the present invention, but do not limit the present invention in any way:
The processing method of producing the low concentration heavy metal water treatment agent is:
500 kilograms of former silica gel are added in the reactor of corrosion-resistant band stirring, add 1500 liters an equivalent hydrochloric acid then from elevated dosing vessel, also can be nitric acid; The beginning heated and boiled.Stirring velocity is controlled at below 60 rev/mins, in order to avoid damage silica gel.Stirring and pickling is 6 hours under bubble point temperature, then to the logical cooling water temperature of chuck of reactor, makes and emits silica gel when temperature of charge drops to normal temperature in the still.The silica gel of emitting is in the filtration washing device, and the elimination acid solution is washed silica gel with deionized water again, stops washing when washing water show neutrality, carries out separating of silica gel and water, then silica gel is dried.When silica gel reaches constant weight, take out, enter next procedure.
Putting in the water vapor saturex through pickling and the silica gel that is dried to constant weight, start the damp atmosphere that air compressor bromizates sodium (also Potassium Bromide) saturated solution reactor and enter in the water vapor saturex, make the silica gel surface generate the water molecules individual layer.At 4.5% o'clock, hydration was finished to the water ratio that records hydrated silica gel, then can guarantee carrying out smoothly of three-step reaction.
Hydrated silica gel is put into the reactor that another corrosion resistant band stirs,, in reactor, put 1500 liters normal hexane and 300 kilograms chloropropyl trichloro-silane into respectively, slowly mix then through the elevated dosing vessel of this reactor top.Hexane can also be to mix hexane, heptan hexane etc., and silane coupling agent can also be r-chloropropyl trimethoxyl silane, chloropropyl triethoxysilane; Also can be γ-An Bingjisanyiyangjiguiwan, to be KH-550, the external trade mark be (A-1100) etc. to its product grade.Beginning had a large amount of HCL gas to disengage in three hours, and the HCL gas that disengages generates hydrochloric acid as byproduct after the absorption tower water absorbs.Silica gel carries out the Silanization reaction under the normal temperature in reactor, the reaction times was at 16 hours.After finishing, reaction carries out separating of silica gel and solution, and first to silica gel again with washing with deionized water behind the hexane.Dry putting moisture eliminator into through the silica gel of deionized water wash, take out at 17% o'clock to the rate of body weight gain that records silica gel, this is a silanized silica gel.In addition, should put into the distillation recovery tower to washing exhausted hexane and distill recovery, recycling.
Silanized silica gel is added in the reactor of a corrosion resistant band stirring, to reactor, add 450 liters of polymines (PEI) and 1300 liters of deionized waters from elevated dosing vessel respectively then, slowly mix.The ethyleneimine polymkeric substance can also be a polyvinylamine, polymine-ODI, polymine-PO.The methyl alcohol that adds 600 liters after the cooling again adds that the back feeds in reacting kettle jacketing that hot water heats and slowly stirred 72 hours at 65 ℃ keeping the reacting kettle jacketing water temperature, the silica gel after recording grafting be former silica gel weight more than 1.5 times the time grafting finish.Graft reaction with grafting silica gel and solution separating, behind deionized water rinsing, is used half normal sulfuric acid scrubbing 1 time, 3 times, 1 normal ammonia scrubbing of deionized water wash 1 time, deionized water wash 3 times, methanol wash 2 times after finishing again.The grafting silica gel that methanol wash is crossed carries out wind at last, and it is for behind the sand sample, dries again.To recording water ratio, obtain low concentration heavy metal water treatment agent of the present invention discharging in 9% o'clock.
Claims (1)
1, a kind of processing method of producing the low concentration heavy metal water treatment agent, feature of the present invention is: its processing method comprises several steps in the following order:
Former silica gel is added in the reactor of corrosion resistant band stirring, add the normal acid of silica gel weight more than 1.5 times from elevated dosing vessel then, carry out heated and boiled and slowly stirring, in order to avoid damage silica gel; Stirring and pickling under bubble point temperature, the greasy dirt of flush away silica gel and the metal ion of surface attachment; To the logical cooling water temperature of chuck of reactor, make and emit silica gel when temperature of charge drops to normal temperature in the still then; The silica gel of emitting is in the filtration washing device, and the elimination acid solution is washed silica gel with deionized water then, stops washing when washing water show neutrality, carries out separating of silica gel and water, then silica gel is dried; When silica gel reaches constant weight, take out, enter next procedure;
Putting in the water vapor saturex through pickling and the silica gel that is dried to constant weight, start the damp atmosphere that air compressor bromizates sodium or Potassium Bromide saturated solution reactor and enter in the water vapor saturex, make the silica gel surface generate the water molecules individual layer; Between 2.0-5.0%, hydration is finished to the water ratio that records hydrated silica gel;
Hydrated silica gel is put into the reactor that another corrosion resistant band stirs, hexane elevated dosing vessel and silane coupling agent elevated dosing vessel through this reactor top, in reactor, put the hexane of quite former silica gel weight more than two times, the silane coupling agent more than 0.5 times into respectively, slowly mix then; Silica gel carries out the Silanization reaction under the normal temperature in reactor, the reaction times should guarantee more than 10 hours; Carry out separating of silica gel and raffinate after reaction is finished, again silanized silica gel is washed; Washed silanized silica gel is dried, get final product when the rate of body weight gain that records silanized silica gel is between 15-22%, this is a silanized silica gel;
Silanized silica gel is added in the reactor of a corrosion resistant band stirring, to reactor, add ethyleneimine polymkeric substance and deionized water from elevated dosing vessel respectively then, slowly mix; When temperature of reaction drops to below 40 ℃, add quite former silica gel weight 0.5-1.5 methyl alcohol doubly again, adding the back, to feed in reacting kettle jacketing that hot water heats and keep the reacting kettle jacketing water temperature be slowly to stir below 69 ℃, silica gel after recording grafting be former silica gel weight more than 1.5 times the time, grafting is finished; Graft reaction will wash after grafting silica gel and the solution separating after finishing; Wherein, the add-on of ethyleneimine polymkeric substance requires to be equal in weight with former silica gel at least, and it is more than the twice of former silica gel weight that the deionized water add-on requires; Dry and record water ratio, obtain low concentration heavy metal water treatment agent material of the present invention in 10% discharging when following.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03126365 CN1242932C (en) | 2003-09-21 | 2003-09-21 | Technological method of producing low concentration heaving metal sewage treatment agent |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03126365 CN1242932C (en) | 2003-09-21 | 2003-09-21 | Technological method of producing low concentration heaving metal sewage treatment agent |
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| CN1597551A CN1597551A (en) | 2005-03-23 |
| CN1242932C true CN1242932C (en) | 2006-02-22 |
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| CN 03126365 Expired - Fee Related CN1242932C (en) | 2003-09-21 | 2003-09-21 | Technological method of producing low concentration heaving metal sewage treatment agent |
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| CN102814166A (en) * | 2011-06-08 | 2012-12-12 | 工信华鑫科技有限公司 | Preparation method of copper ion special-purposed adsorption material |
| CN102671644B (en) * | 2012-05-28 | 2014-12-31 | 陕西厚亿节能环保新材料科技有限公司 | Silica gel loaded polymeric amine and 8-hydroxyquinoline dual-function base compound adsorption material and preparation method |
| CN109987751B (en) * | 2019-05-17 | 2021-08-03 | 河北佩清科技有限公司 | Processing system and method for plate-making wastewater |
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