CN102249388A - Method for performing synergetic degradation on cadmium ammonia complex in underground water - Google Patents
Method for performing synergetic degradation on cadmium ammonia complex in underground water Download PDFInfo
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- CN102249388A CN102249388A CN 201110115193 CN201110115193A CN102249388A CN 102249388 A CN102249388 A CN 102249388A CN 201110115193 CN201110115193 CN 201110115193 CN 201110115193 A CN201110115193 A CN 201110115193A CN 102249388 A CN102249388 A CN 102249388A
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- cadmium
- underground water
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Abstract
The invention discloses a method for performing synergetic degradation on cadmium ammonia complex in underground water. The method comprises the following steps of: mixing the underground water containing the cadmium ammonia complex and TMT heavy metal ion chelating agent solution at concentration of 0.5*10<-3> to 5*10<-3>mol/L according to the volume ratio of 3:(1-12), uniformly oscillating, and standing to obtain mixed solution; and adding the poly aluminum ferric chloride stock solution at concentration of 0.5 to 5g/L into the mixed solution until the concentration of the poly aluminum ferric chloride in the mixed solution is 50 to 200mg/L, stirring, flocculating and precipitating, performing centrifugal separation, taking supernate to obtain the degraded underground water. The cadmium ammonia complex in the underground water is degraded under the synergetic action of the TMT and poly aluminum ferric chloride flocculant, and the degradation efficiency of the cadmium ammonia complex is improved. The concentration of the cadmium ions in the degraded underground water is reduced to less than 0.1mg/L, and the underground water fully meets the emission standard of cadmium-containing waste water.
Description
Technical field
The invention belongs to water-treatment technology field, be specifically related to the Synergistic degradation method of cadmium-ammonia complex in a kind of underground water.
Background technology
Along with 12 planning carry out on a large scale carry out, the improving constantly of national total industrial output value, a large amount of industrial wastewater discharges are in environment, the safety of water surrounding in serious threat, has caused serious pollution as metallic elements such as cadmium, tin, nickel, zinc, copper.These heavy metals can not be by microbiological degradation in water body, enter food chain after, through biomagnification, amplification, be delivered to the biological cylinder accumulation of the high ecological niche of food chain, cause acute or chronic poisoning.
The treatment process of at present common cadmium-ammonia complex mainly contains:
1, physical method, specific form comprise absorption method, membrane separation process, ion-exchange-resin process etc.
Sorbent material commonly used in the absorption method wherein is a gac, and it is easy to use, the source is wide, absorption property is high.But charcoal absorption speed is comparatively slow and price is relatively expensive; Membrane separation process and other method of wastewater treatment relatively have advantages such as no phase transformation, energy consumption is little, heavy metal is recovered easily, can realize " little discharging " even " zero release " of heavy metal, but this method can produce secondary pollution to environment; The ion exchange resin that ion exchange method is utilized has very high concentrated effect to heavy metal wastewater thereby, and the efficient that therefore reclaims heavy metal is very high, but Pollutant levels should not be too high in this method one-time investment height, big, the handled waste water of floor space.
2, chemical process mainly comprises the precipitator method, oxidation reduction process and electrolytic process etc.
Chemical precipitation method is used advantages such as reagent source is wide, cheap with it, generally be used in the middle of the processing of heavy metal wastewater thereby, but chemical precipitation method easily produces secondary pollution in operating process; Oxidation reduction process and electrolytic process have equipment simple, take up an area of little, easily reclaim advantage such as metal, but it exists shortcomings such as the disposable processing water yield is few, treating processes is slow, energy consumption height.
3, microbial technique is comprising biosorption process, biotransformation method and bio-flocculation process.
This method discharges metal ion in the microbe with specific method after having utilized the removal of life Metabolic activity or the heavy metal in the accumulation waste water of mushroom again, reaches the purpose that reduces heavy metal ions in wastewater content.This processing technology does not produce secondary environmental pollution, but the microbiological treatment technology also is in the laboratory initial research stage at present, uses less in the actual engineering.
4, the artificial swamp method of purification, its cleaning action mainly are by the plant that is comprised in the wet land system, animal, microorganism and matrix metal ion absorption, absorption and precipitating action to be finished.Artificial swamp handles heavy metal wastewater thereby and has that the maintenance cost of construction is low, effluent quality good, to advantages such as load variations adaptability are strong.But heavy metal is not transferred, and just is trapped in the wet land system, and a large amount of heavy metals may produce the biotic population in the wet land system and poison, and destroys whole Wetland ecological, has bigger potential safety hazard.
Therefore the method for studying a kind of novel efficient processing cadmium-ammonia complex has important practical sense.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned the deficiencies in the prior art, provide a kind of working method simple, processing speed is fast, is easy to realize containing the phreatic mass disposal of cadmium-ammonia complex, and the Synergistic degradation method of cadmium-ammonia complex in the little underground water of environmental pollution.
For solving the problems of the technologies described above, the technical solution used in the present invention is: the Synergistic degradation method of cadmium-ammonia complex in a kind of underground water is characterized in that this method may further comprise the steps:
(1) preparation of TMT heavy metal ion chelating agent solution: TMT (trithiocyanuric acid trisodium salt) is added in the entry and dissolves, and obtaining concentration is 0.5 * 10
-3Mol/L～5 * 10
-3The TMT heavy metal ion chelating agent solution of mol/L;
(2) preparation of aluminium iron polychloride stock solution: it is the aluminium iron polychloride stock solution of 0.5g/L～5g/L that aluminium iron polychloride is added in the entry dissolving preparation concentration;
(3) Synergistic degradation of cadmium-ammonia complex in the underground water: the underground water that will contain cadmium-ammonia complex mixes according to 3: 1～12 volume ratio with TMT heavy metal ion chelating agent solution described in the step (1), leave standstill 0.5h～1.5h after the vibration evenly, obtain mixing solutions; Adding the concentration of aluminium iron polychloride to the mixing solutions of aluminium iron polychloride stock solution described in the step (2) then in mixing solutions is 50mg/L～200mg/L, stir flocculation sediment after, the underground water after supernatant liquor obtains degrading is got in centrifugation.
The quality purity of TMT is more than 95% described in the above-mentioned steps (1).
The concentration of TMT heavy metal ion chelating agent solution is 2 * 10 described in the above-mentioned steps (1)
-3Mol/L.
The concentration of aluminium iron polychloride stock solution is 1g/L described in the above-mentioned steps (2).
Containing the underground water of cadmium-ammonia complex and the volume ratio of TMT heavy metal ion chelating agent solution described in the above-mentioned steps (3) is 1: 1.
Described in the above-mentioned steps (3) in the mixing solutions concentration of aluminium iron polychloride be 100mg/L.
The present invention compared with prior art has the following advantages:
1, working method of the present invention is simple, and processing speed is fast, be easy to realize containing the phreatic mass disposal of cadmium-ammonia complex, and environmental pollution is little.
2, the present invention adds an amount of TMT heavy metal ion chelating agent in containing the underground water of cadmium-ammonia complex, then under the synergy of a small amount of aluminium iron polychloride floculant, cadmium-ammonia complex in the underground water is degraded, improved the degradation rate of cadmium-ammonia complex, the concentration of cadmium ion is reduced to below the 0.1mg/L in the underground water after the degraded, reaches the emission standard of cadmium wastewater fully.
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment
Contain the preparation (2 * 10 of the groundwater simulation solution of cadmium-ammonia complex
-3Mol/L): accurately take by weighing the 0.2285g Cadmium chloride fine powder in the 50mL beaker, be transferred to after being dissolved in water in the 250mL volumetric flask, being settled to concentration of cadmium ions is 4 * 10
-3The solution of mol/L; Get 1.2mL, concentration be the strong aqua of 13.4mol/L in the 50mL beaker, add and be transferred in the 1000mL volumetric flask after water mixes, be settled to NH
3H
2O concentration is 1.6 * 10
-2The solution of mol/L; Solution equal-volume in two volumetric flasks is mixed, and gained solution is and contains [Cd (NH
3)
4]
2+2 * 10
-3The groundwater simulation solution of mol/L.
Embodiment 1
(1) preparation of TMT heavy metal ion chelating agent solution: with quality purity is that TMT more than 95% adds in the entry and dissolves, and obtaining concentration is 0.5 * 10
-3The TMT heavy metal ion chelating agent solution of mol/L;
(2) preparation of aluminium iron polychloride stock solution: it is the aluminium iron polychloride stock solution of 0.5g/L that aluminium iron polychloride is added in the entry dissolving preparation concentration;
(3) Synergistic degradation of cadmium-ammonia complex in the underground water: will contain cadmium-ammonia complex 2 * 10
-3The groundwater simulation solution of mol/L mixes according to 3: 12 volume ratio with TMT heavy metal ion chelating agent solution described in the step (1), leaves standstill 0.5h after the vibration evenly, obtains mixing solutions; Adding the concentration of aluminium iron polychloride to the mixing solutions of aluminium iron polychloride stock solution described in the step (2) then in mixing solutions is 50mg/L, stir flocculation sediment after, centrifugation, the groundwater simulation solution after getting supernatant liquor and obtaining degrading.
Embodiment 2
(1) preparation of TMT heavy metal ion chelating agent solution: with quality purity is that TMT more than 95% adds in the entry and dissolves, and obtaining concentration is 1.7 * 10
-3The TMT heavy metal ion chelating agent solution of mol/L;
(2) preparation of aluminium iron polychloride stock solution: it is the aluminium iron polychloride stock solution of 1g/L that aluminium iron polychloride is added in the entry dissolving preparation concentration;
(3) Synergistic degradation of cadmium-ammonia complex in the underground water: will contain cadmium-ammonia complex 2 * 10
-3The groundwater simulation solution of mol/L mixes according to 3: 6 volume ratio with TMT heavy metal ion chelating agent solution described in the step (1), leaves standstill 1h after the vibration evenly, obtains mixing solutions; Adding the concentration of aluminium iron polychloride to the mixing solutions of aluminium iron polychloride stock solution described in the step (2) then in mixing solutions is 100mg/L, stir flocculation sediment after, centrifugation, the groundwater simulation solution after getting supernatant liquor and obtaining degrading.
Embodiment 3
(1) preparation of TMT heavy metal ion chelating agent solution: with quality purity is that TMT more than 95% adds in the entry and dissolves, and obtaining concentration is 3 * 10
-3The TMT heavy metal ion chelating agent solution of mol/L;
(2) preparation of aluminium iron polychloride stock solution: it is the aluminium iron polychloride stock solution of 5g/L that aluminium iron polychloride is added in the entry dissolving preparation concentration;
(3) Synergistic degradation of cadmium-ammonia complex in the underground water: will contain cadmium-ammonia complex 2 * 10
-3The groundwater simulation solution of mol/L mixes according to 1: 1 volume ratio with TMT heavy metal ion chelating agent solution described in the step (1), leaves standstill 1.5h after the vibration evenly, obtains mixing solutions; Adding the concentration of aluminium iron polychloride to the mixing solutions of aluminium iron polychloride stock solution described in the step (2) then in mixing solutions is 150mg/L, stir flocculation sediment after, centrifugation, the groundwater simulation solution after getting supernatant liquor and obtaining degrading.
Embodiment 4
(1) preparation of TMT heavy metal ion chelating agent solution: with quality purity is that TMT more than 95% adds in the entry and dissolves, and obtaining concentration is 5 * 10
-3The TMT heavy metal ion chelating agent solution of mol/L;
(2) preparation of aluminium iron polychloride stock solution: it is the aluminium iron polychloride stock solution of 3g/L that aluminium iron polychloride is added in the entry dissolving preparation concentration;
(3) Synergistic degradation of cadmium-ammonia complex in the underground water: will contain cadmium-ammonia complex 2 * 10
-3The groundwater simulation solution of mol/L mixes according to 3: 1 volume ratio with TMT heavy metal ion chelating agent solution described in the step (1), leaves standstill 1.5h after the vibration evenly, obtains mixing solutions; Adding the concentration of aluminium iron polychloride to the mixing solutions of aluminium iron polychloride stock solution described in the step (2) then in mixing solutions is 200mg/L, stir flocculation sediment after, centrifugation, the groundwater simulation solution after getting supernatant liquor and obtaining degrading.
Embodiment 5
(1) preparation of TMT heavy metal ion chelating agent solution: with quality purity is that TMT more than 95% adds in the entry and dissolves, and obtaining concentration is 2 * 10
-3The TMT heavy metal ion chelating agent solution of mol/L;
(2) preparation of aluminium iron polychloride stock solution: it is the aluminium iron polychloride stock solution of 1g/L that aluminium iron polychloride is added in the entry dissolving preparation concentration;
(3) Synergistic degradation of cadmium-ammonia complex in the underground water: will contain cadmium-ammonia complex 2 * 10
-3The groundwater simulation solution of mol/L mixes according to 1: 1 volume ratio with TMT heavy metal ion chelating agent solution described in the step (1), leaves standstill 0.5h after the vibration evenly, obtains mixing solutions; Adding the concentration of aluminium iron polychloride to the mixing solutions of aluminium iron polychloride stock solution described in the step (2) then in mixing solutions is 100mg/L, stir flocculation sediment after, centrifugation, the groundwater simulation solution after getting supernatant liquor and obtaining degrading.
Embodiment 6
It is the aluminium iron polychloride stock solution of 1g/L that aluminium iron polychloride is added in the entry dissolving preparation concentration; Then the aluminium iron polychloride stock solution is added and contain cadmium-ammonia complex 2 * 10
-3In the groundwater simulation solution of mol/L, make that the concentration of aluminium iron polychloride is 50mg/L in the simulation solution, stir flocculation sediment after, centrifugation, the groundwater simulation solution after getting supernatant liquor and obtaining degrading.
Embodiment 7
Present embodiment is identical with the degradation method of embodiment 6, and wherein difference is: the concentration of aluminium iron polychloride is 100mg/L in the simulation solution.
Embodiment 8
Present embodiment is identical with the degradation method of embodiment 6, and wherein difference is: the concentration of aluminium iron polychloride is 150mg/L in the simulation solution.
Embodiment 9
Present embodiment is identical with the degradation method of embodiment 6, and wherein difference is: the concentration of aluminium iron polychloride is 180mg/L in the simulation solution.
Embodiment 10
Present embodiment is identical with the degradation method of embodiment 6, and wherein difference is: the concentration of aluminium iron polychloride is 200mg/L in the simulation solution.
Cd in the groundwater simulation solution among table 1 embodiment 1 to 10 after the degraded
2+Concentration
As above shown in the table, adopt TMT heavy metal ion chelating agent of the present invention and aluminium iron polychloride Synergistic degradation method that the groundwater simulation solution that contains cadmium-ammonia complex is degraded, the concentration of cadmium ion is reduced to below the 0.10mg/L in the groundwater simulation solution after the degraded, reaches the emission standard of cadmium wastewater fully.And only adopting aluminium iron polychloride to degrade, the concentration of cadmium ion reaches the emission standard of cadmium wastewater far away in the groundwater simulation solution after the degraded.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalent structure changed, all still belong in the protection domain of technical solution of the present invention according to the technology of the present invention essence.
Claims (6)
1. the Synergistic degradation method of cadmium-ammonia complex in the underground water is characterized in that this method may further comprise the steps:
(1) preparation of TMT heavy metal ion chelating agent solution: TMT added in the entry dissolve, obtaining concentration is 0.5 * 10
-3Mol/L～5 * 10
-3The TMT heavy metal ion chelating agent solution of mol/L;
(2) preparation of aluminium iron polychloride stock solution: aluminium iron polychloride added in the entry dissolve, preparation concentration is the aluminium iron polychloride stock solution of 0.5g/L～5g/L;
(3) Synergistic degradation of cadmium-ammonia complex in the underground water: the underground water that will contain cadmium-ammonia complex mixes according to 3: 1～12 volume ratio with TMT heavy metal ion chelating agent solution described in the step (1), leave standstill 0.5h～1.5h after the vibration evenly, obtain mixing solutions; Adding the concentration of aluminium iron polychloride to the mixing solutions of aluminium iron polychloride stock solution described in the step (2) then in mixing solutions is 50mg/L～200mg/L, stir flocculation sediment after, the underground water after supernatant liquor obtains degrading is got in centrifugation.
2. the Synergistic degradation method of cadmium-ammonia complex is characterized in that in a kind of underground water according to claim 1, and the quality purity of TMT is more than 95% described in the step (1).
3. the Synergistic degradation method of cadmium-ammonia complex is characterized in that in a kind of underground water according to claim 1, and the concentration of TMT heavy metal ion chelating agent solution is 2 * 10 described in the step (1)
-3Mol/L.
4. the Synergistic degradation method of cadmium-ammonia complex is characterized in that in a kind of underground water according to claim 1, and the concentration of aluminium iron polychloride stock solution is 1g/L described in the step (2).
5. the Synergistic degradation method of cadmium-ammonia complex is characterized in that in a kind of underground water according to claim 1, and containing the underground water of cadmium-ammonia complex and the volume ratio of TMT heavy metal ion chelating agent solution described in the step (3) is 1: 1.
6. the Synergistic degradation method of cadmium-ammonia complex is characterized in that in a kind of underground water according to claim 1, described in the step (3) in the mixing solutions concentration of aluminium iron polychloride be 100mg/L.
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|---|---|---|---|
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771619A (en) * | 2014-01-13 | 2014-05-07 | 沈阳工业大学 | Cyclic regeneration process of waste liquid of iron-part finishing machine |
| CN104761039A (en) * | 2014-12-15 | 2015-07-08 | 广西冶金研究院 | Composite chelating agent used for treating cadmium-containing waste water and application method thereof |
| CN105293603A (en) * | 2015-11-30 | 2016-02-03 | 欣格瑞（山东）环境科技有限公司 | Heavy metal wastewater treatment medicament and treatment method of heavy metal wastewater |
| CN108793561A (en) * | 2018-06-26 | 2018-11-13 | 辽宁莱特莱德环境工程有限公司 | Cadmium ammonia waste water Zero discharging system and method applied to efficient film production line for manufacturing battery |
-
2011
- 2011-05-05 CN CN 201110115193 patent/CN102249388A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 《中国优秀硕士学位论文全文数据库工程科技I辑》 20110315 李元岗 废水中镉氨络合物的螯合沉淀处理及后化学发光测定研究 第20页第2.4.1节，第37-38页第5.2.1节及第41-44页5.4节 1-6 , 第3期 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103771619A (en) * | 2014-01-13 | 2014-05-07 | 沈阳工业大学 | Cyclic regeneration process of waste liquid of iron-part finishing machine |
| CN104761039A (en) * | 2014-12-15 | 2015-07-08 | 广西冶金研究院 | Composite chelating agent used for treating cadmium-containing waste water and application method thereof |
| CN104761039B (en) * | 2014-12-15 | 2016-07-20 | 广西冶金研究院 | A kind of association complex processing cadmium wastewater and application process thereof |
| CN105293603A (en) * | 2015-11-30 | 2016-02-03 | 欣格瑞（山东）环境科技有限公司 | Heavy metal wastewater treatment medicament and treatment method of heavy metal wastewater |
| CN108793561A (en) * | 2018-06-26 | 2018-11-13 | 辽宁莱特莱德环境工程有限公司 | Cadmium ammonia waste water Zero discharging system and method applied to efficient film production line for manufacturing battery |
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Application publication date: 20111123 |