CN103145263A - Method for removing trace manganese in aqueous solution - Google Patents
Method for removing trace manganese in aqueous solution Download PDFInfo
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- CN103145263A CN103145263A CN2013100601738A CN201310060173A CN103145263A CN 103145263 A CN103145263 A CN 103145263A CN 2013100601738 A CN2013100601738 A CN 2013100601738A CN 201310060173 A CN201310060173 A CN 201310060173A CN 103145263 A CN103145263 A CN 103145263A
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Abstract
The invention discloses a method for removing trace manganese in aqueous solution. By cultivating and analyzing a plant which grows in a manganese environment, acid or alkali is used for adjusting the pH value of a manganese-contained aqueous solution, calcium reagent, phosphate and carbonate are respectively added into the manganese-contained aqueous solution, then the manganese-contained aqueous solution stands and deposits to separate water containing manganese residues, and the content of the manganese in the water is detected to be less than 0.01mg/L. The method is characterized in that by controlling the addition quantity of the calcium reagent, the phosphate and the carbonate as well as the pH value of the solution, trace manganese in the aqueous solution can be removed; and moreover, the water treatment time is short, raw materials used in the method are economical and easily gotten, and no harmful element is added to the system, so that the method is an environment-friendly and economical treatment process. The process can be widely used for treating manganese-contained waste water discharged in the fields such as the metal machining industry, the electroplating industry, the machine building industry, the catalyzing industry, the tannery industry and the textile industry.
Description
[technical field]
The present invention relates to the field of waste water treatment in environmental technology, particularly a kind of method that removes trace manganese in industrial wastewater.
[background technology]
Along with increasing sharply of trade waste, the heavy metal in water pollution by manganese that causes is more and more serious.Usually find manganese in trade effluent, maximum pollution by manganese is from the exploitation of manganese ore and smelting, metal processing, machinofacture, Iron and Steel Production, battery, dyestuff, catalyzer etc.The poisonous manganese compound that usually contains a great deal of in these industrial effluent liquid.
Traditional method that removes manganese is suitable for processing the higher waste liquid of manganese content, removal effect is undesirable but for liquid waste disposal that manganese content is lower, during processing, the agents useful for same consumption is large, produces thus a large amount of waste residues, but also may introduce undesirable ion in water body.
[summary of the invention]
The objective of the invention is to be protection of the environment, satisfy simultaneously the needs of economical and efficient, and a kind of method that removes little Trace Amount Manganese in the aqueous solution is provided.The method comprises with acid or alkali regulates the pending pH value that contains the manganese waste liquid, adds to contain calcon, phosphoric acid salt, carbonate, through standing, after precipitation, isolate and contains manganese and precipitate.
The invention discloses a kind of method that removes trace manganese in the aqueous solution, it is characterized in that: intersect in containing the pending aqueous solution of bivalent manganese or carry out simultaneously following interpolation reagent and regulate the pH Value Operations: adding to contain calcon, add phosphoric acid salt, add carbonate, with the pH value of acid or the pending aqueous solution of alkali adjusting; Then standing solution, separate out precipitation, separates at last to contain the manganese precipitation; Described adjusting pH value is 6-8, and the calcic reagent dosage is that the mol ratio of calcium and manganese is 0.1-10:1, and the phosphoric acid salt consumption is that the mol ratio of phosphorus and manganese is 0.1-10:1, and the carbonate consumption is that the mol ratio of carbon and manganese is 0.1-10:1.
The method that removes trace manganese in the aqueous solution of the present invention can be used for administering trade effluent, takes into account simultaneously economy and environment protection.It can cut the waste, and improves the decreasing ratio of lower concentration manganese, reduces costs, simultaneously environmental contamination reduction.Be characterized in by cultivation and anatomy to growing plant under the manganese environment, by controlling pH, and add and contain calcon, phosphoric acid salt, carbonate etc., basically remove the manganese that contains the manganese waste liquid fully.The raw materials used economy of the present invention is easy to get, and does not add any harmful element in system, and the wastewater treatment time is short, reagent dosage water, and the waste residue generation is few, and in the aqueous solution after processing, manganese content less than 0.01mg/L, can enter secondary network.Therefore be a kind of environmentally friendly treatment process.This technique can be widely used in the processing of the Mn-bearing waste water that discharges in the fields such as metal-processing industry, Electroplating Operations, machinery manufacturing industry, curriery and textile industry.
[embodiment]
The method that removes aqueous solution trace manganese of the present invention, carry out first, afterwards or simultaneously following interpolation reagent and regulate the pH Value Operations in containing the pending aqueous solution of bivalent manganese: add to contain calcon, add phosphoric acid salt, add carbonate, with the pH value of acid or the pending aqueous solution of alkali adjusting; Then standing solution, separate out precipitation, separates at last to contain the manganese precipitation; Described adjusting pH value is 6-8, and the calcic reagent dosage is that the mol ratio of calcium and manganese is 0.1-10:1, and the phosphoric acid salt consumption is that the mol ratio of phosphorus and manganese is 0.1-10:1, and the carbonate consumption is that the mol ratio of carbon and manganese is 0.1-10:1.
In described method treating processes, the temperature of the pending aqueous solution is 0～80 ℃.The better temperature of described method treating processes is 10～45 ℃.
The described calcon that contains is calcium chloride, nitrocalcite, the mixture of one or more in calcium sulfate or calcium acetate.
Described phosphoric acid salt is sodium phosphate, SODIUM PHOSPHATE, MONOBASIC, Sodium phosphate dibasic, ammonium phosphate, the mixture of one or more in primary ammonium phosphate or ammonium hydrogen phosphate.
Described carbonate is sodium carbonate, sodium bicarbonate, salt of wormwood, saleratus, volatile salt, the mixture of one or more in bicarbonate of ammonia or calcium carbonate.
Embodiment 1: measuring manganese content is the aqueous solution 1L of 13mg/L, adds 30mg calcium chloride, and the 0.6g Sodium phosphate dibasic, and controlling aqueous temperature is 20 ℃.(regulate with sodium hydroxide and hydrochloric acid when needing) under the condition of violent stirring and hierarchy of control pH7-7.2, drip 50mL and contain the 20mg sodium bicarbonate aqueous solution.After dropwising, continue to stir 1 hour.Afterwards, be cooled to room temperature, standing, sedimentation also removes by filter and contains the manganese throw out.Through ICP(inductively coupled plasma emmission spectrum, lower same) analyze the manganese content of filtrate less than 0.01mg/L.
Embodiment 2: measuring manganese content is the aqueous solution 1L of 13mg/L, adds 4mg calcium sulfate, and the 60mg Sodium phosphate dibasic, and controlling aqueous temperature is 30 ℃.(regulate with sodium hydroxide and hydrochloric acid when needing) under the condition of violent stirring and hierarchy of control pH7-7.2, drip 30mL and contain the 20mg ammonium bicarbonate aqueous solution.After dropwising, continue to stir 1 hour.Afterwards, be cooled to room temperature, standing, sedimentation also removes by filter and contains the manganese throw out.Through ICP(inductively coupled plasma emmission spectrum, lower same) analyze the manganese content of filtrate less than 0.01mg/L.
Embodiment 3: measuring manganese content is the aqueous solution 1L of 13mg/L, under 40 ℃ and violent stirring, adds 20mg ammonium hydrogen phosphate and 0.2g nitrocalcite, then will under the condition of control system pH6-6.5, drip the aqueous solution that 20mL contains the 0.3g volatile salt.After dropwising, continue to stir 1 hour.Afterwards, be cooled to room temperature, standing, sedimentation and centrifugal removing contain the manganese throw out.Through the manganese content of icp analysis filtrate less than 0.01mg/L.
Embodiment 4: measuring manganese content is the aqueous solution 1L of 13mg/L, with its with hcl acidifying to pH～6, under violent stirring, add 0.4g calcium acetate, 20mg sodium bicarbonate and 3mg sodium phosphate, then pH value of solution is adjusted to 7.5～8, and the control aqueous temperature is 45 ℃.Continue to stir 2 hours.Afterwards, standing, sedimentation also removes by filter and contains the manganese throw out.Through the manganese content of icp analysis filtrate less than 0.01mg/L.
Embodiment 5: measuring manganese content is the aqueous solution 1L of 13mg/L, under violent stirring, adds 30mg ammonium phosphate, 40mg calcium sulfate and 10mg salt of wormwood, then pH value of solution is adjusted to 7～7.5, and the control aqueous temperature is 10 ℃.Continue to stir 2 hours.Afterwards, standing, sedimentation also filters out and contains the manganese throw out.Through the manganese content of icp analysis filtrate less than 0.01mg/L.
Embodiment 6: measuring manganese content is the aqueous solution 1L of 13mg/L, the pH of the adjusting aqueous solution～7.Under 30 ℃ and violent stirring, add 30mg ammonium hydrogen phosphate and 40mg calcium carbonate.Controlling solution～7(can add sodium hydroxide or hydrochloric acid to regulate), continue to stir 1 hour.Afterwards, standing, sedimentation and centrifugal removing contain the manganese throw out.Through the manganese content of icp analysis filtrate less than 0.01mg/L.
Embodiment 7: measuring manganese content is the aqueous solution 1L of 13mg/L, adds 0.6g four water-calcium nitrate and 80mg primary ammonium phosphate, then uses the pH of sodium hydroxide solution regulator solution～7, and to control aqueous temperature be 10 ℃.Under the condition of violent stirring and control system pH7.2-7.5, drip the aqueous solution that 6mL contains 3mg sodium carbonate.After dropwising, continue to stir 1 hour.Afterwards, be cooled to room temperature, standing, sedimentation and centrifugal removing contain the manganese throw out.Through the manganese content of icp analysis filtrate less than 0.01mg/L.
Claims (3)
1. method that removes trace manganese in the aqueous solution, it is characterized in that: intersect in containing the pending aqueous solution of bivalent manganese or carry out simultaneously following interpolation reagent and regulate the pH Value Operations: adding to contain calcon, add phosphoric acid salt, add carbonate, with the pH value of acid or the pending aqueous solution of alkali adjusting; Then standing solution, separate out precipitation, separates at last to contain the manganese precipitation; The described calcon that contains is calcium chloride, nitrocalcite, the mixture of one or more in calcium sulfate or calcium acetate; Described phosphoric acid salt is sodium phosphate, SODIUM PHOSPHATE, MONOBASIC, Sodium phosphate dibasic, ammonium phosphate, the mixture of one or more in primary ammonium phosphate or ammonium hydrogen phosphate; Described carbonate is sodium carbonate, sodium bicarbonate, salt of wormwood, saleratus, volatile salt, the mixture of one or more in bicarbonate of ammonia or calcium carbonate; Described adjusting pH value is 6-8; The calcic reagent dosage is that the mol ratio of calcium and manganese is 0.1-10:1; The phosphoric acid salt consumption is that the mol ratio of phosphorus and manganese is 0.1-10:1; The carbonate consumption is that the mol ratio of carbon and manganese is 0.1-10:1.
2. the pending aqueous temperature that in accordance with the method for claim 1, it is characterized in that described method treating processes is 0～80 ℃.
3. according to the described method of claim 1 or 2, the pending aqueous temperature that it is characterized in that described method treating processes is 10～45 ℃.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690080A (en) * | 2015-03-28 | 2015-06-10 | 重庆大学 | Method for directly carrying out innocent treatment on electrolytic manganese residues in filter pressing plate frames |
| CN114457241A (en) * | 2022-01-05 | 2022-05-10 | 重庆大学 | Method for reducing soluble manganese and water content of electrolytic manganese slag |
| CN114457240A (en) * | 2022-01-05 | 2022-05-10 | 重庆大学 | Method for harmlessly treating electrolytic manganese slag leachate |
| CN115583740A (en) * | 2022-09-09 | 2023-01-10 | 昆山三一环保科技有限公司 | Manganese removal method and system for iron phosphate wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN87106661A (en) * | 1987-09-28 | 1988-04-06 | 湖北工业建筑设计院 | A kind of underground water deferrization and demanganization equipment |
| JP3659383B2 (en) * | 1998-03-30 | 2005-06-15 | 株式会社荏原製作所 | Method and apparatus for treating manganese-containing water |
| CN102139973A (en) * | 2011-02-18 | 2011-08-03 | 南京大学 | Method for treating micro-polluted and eutrophicated water body by utilizing coprecipitation method |
| CN102153187A (en) * | 2011-05-11 | 2011-08-17 | 天津理工大学 | Method for removing trace chromium in aqueous solution |
-
2013
- 2013-02-26 CN CN201310060173.8A patent/CN103145263B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87106661A (en) * | 1987-09-28 | 1988-04-06 | 湖北工业建筑设计院 | A kind of underground water deferrization and demanganization equipment |
| JP3659383B2 (en) * | 1998-03-30 | 2005-06-15 | 株式会社荏原製作所 | Method and apparatus for treating manganese-containing water |
| CN102139973A (en) * | 2011-02-18 | 2011-08-03 | 南京大学 | Method for treating micro-polluted and eutrophicated water body by utilizing coprecipitation method |
| CN102153187A (en) * | 2011-05-11 | 2011-08-17 | 天津理工大学 | Method for removing trace chromium in aqueous solution |
Non-Patent Citations (1)
| Title |
|---|
| 田惠芸等: "仿骨盐吸附剂的合成及其在脱除重金属方面的应用", 《天津理工大学学报》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104690080A (en) * | 2015-03-28 | 2015-06-10 | 重庆大学 | Method for directly carrying out innocent treatment on electrolytic manganese residues in filter pressing plate frames |
| CN104690080B (en) * | 2015-03-28 | 2016-08-24 | 重庆大学 | The directly method of harmless treatment electrolytic manganese residues in filtrating-pressing plate frame |
| CN114457241A (en) * | 2022-01-05 | 2022-05-10 | 重庆大学 | Method for reducing soluble manganese and water content of electrolytic manganese slag |
| CN114457240A (en) * | 2022-01-05 | 2022-05-10 | 重庆大学 | Method for harmlessly treating electrolytic manganese slag leachate |
| CN114457241B (en) * | 2022-01-05 | 2024-01-30 | 重庆大学 | Method for reducing soluble manganese and water content of electrolytic manganese slag |
| CN115583740A (en) * | 2022-09-09 | 2023-01-10 | 昆山三一环保科技有限公司 | Manganese removal method and system for iron phosphate wastewater |
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| CN103145263B (en) | 2014-06-25 |
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