CN104016525A - Metal mine mineral separation wastewater treatment method - Google Patents
Metal mine mineral separation wastewater treatment method Download PDFInfo
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- CN104016525A CN104016525A CN201410299746.7A CN201410299746A CN104016525A CN 104016525 A CN104016525 A CN 104016525A CN 201410299746 A CN201410299746 A CN 201410299746A CN 104016525 A CN104016525 A CN 104016525A
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Abstract
The invention discloses a metal mine mineral separation wastewater treatment method which comprises the following steps: regulating the pH value of the mineral separation wastewater to a weakly-acidic state; under the conditions of stirring and ultraviolet lamp irradiation, adding a Fenton reagent and a catalyst to carry out ultraviolet-Fenton oxidation reaction; adding an alkali solution into the mineral separation wastewater subjected to oxidation reaction in the stirring state to regulate the pH value, adding a coagulation reagent to perform coagulation, and standing to precipitate; and introducing ozone into the supernate to perform reoxidation. According to the characteristics of complex water quality and difficulty in treatment of the metal mine mineral separation wastewater, the method performs synergic treatment by combining the coagulative precipitation technique, ultraviolet-Fenton advanced oxidation technique and ozone oxidation technique. The method has the advantages of simple technical process, favorable wastewater treatment effect, high treatment efficiency and stable systems operation, has wide application prospects, and has the advantages which can not be achieved in other methods for unmanageable metal mine mineral separation wastewater.
Description
Technical field
The present invention relates to environmental protection technology and water-treatment technology field, particularly a kind for the treatment of process of metal mine beneficiation wastewater.
Background technology
Metal mine can produce a large amount of beneficiation wastewater in process of production, these waste water quality complexity, composition is various, contain various heavy, beneficiation reagent and other pollution substances, if outer row will produce serious harm to surrounding ecotope, if recycled in Returning process, objectionable impurities in waste water will constantly be accumulated, can produce adverse influence to production technique and equipment, therefore, need to select suitable treatment process to process flotation waste water.At present, conventional treatment process has chemical precipitation method, absorption method, microbial method, artificial swamp method etc., although it is certain that these treatment processs have advantages of separately, but be generally subject to the restriction of the factors such as mine working condition, envrionment conditions or processing requirements, for example, adopt chemical precipitation method heavy metal treatment effect relatively better, but organic substance poor processing effect; Absorption method can effectively be processed heavy metal wastewater thereby, but when adsorbent reactivation, pollutent can regenerate again; Microbial method processing cost is relatively low, but reaction conditions requirement is harsher, is difficult to be widely applied; Wetland method area occupied is large, and long processing period is also difficult to meet processing requirements.Therefore, a kind of reasonable, effective, practical beneficiation wastewater treatment method of How to choose, is the difficult problem that current metal mine enterprise generally faces.
Summary of the invention
Object of the present invention is exactly the problems referred to above that exist for existing treatment process, and the metal mine that a kind of technical process is simple, treatment effect good, processing efficiency is high beneficiation wastewater treatment method is provided.
The present invention includes following steps:
(1) regulate between beneficiation wastewater pH to 3～6, if the original pH of waste water is between this, can regulate;
(2) beneficiation wastewater after adjusting, under stirring and UV-lamp illuminate condition, adds Fe
2+reagent and concentration are that 30% hydrogen peroxide carries out the reaction of ultraviolet-Fenton oxidation, after reaction 30min, add catalyzer, continue reaction 30min～90min;
(3) beneficiation wastewater after oxidizing reaction adds between alkali lye adjusting pH to 8～10 under whipped state, then add successively polymeric aluminum chlorides solution and polymeric anion polyacrylamide solution carries out coagulating sedimentation, after coagulation, stop stirring and leave standstill 15min～120min;
(4) get supernatant liquor after precipitation and pass into ozone and carry out secondary oxidation reaction, the reaction times is 15min～60min;
(5) water outlet after secondary oxidation is returned and is selected in plant process flow or qualified discharge.
In described step (1), regulating the medicament of pH is sulfuric acid, hydrochloric acid, sodium hydroxide or milk of lime.
In described step (2), in ultraviolet-Fenton oxidation reaction process, stirring linear velocity is 0.01m/s～1m/s, and UV-lamp wavelength is 254nm, Fe
2+the order of adding of reagent and hydrogen peroxide is for first adding Fe
2+it is that 30% hydrogen peroxide or both add simultaneously that reagent adds concentration again, and dosage is determined according to waste water quality, and catalyzer is oxalate reagent.
In described step (3), alkali lye is sodium hydroxide solution or milk of lime, and it is 0.1m/s～1m/s that coagulation stirs linear velocity.
In described step (4), the intake of ozone is determined according to supernatant liquor water quality characteristic.
Beneficial effect of the present invention:
The present invention, according to metal mine beneficiation wastewater water quality complexity, unmanageable feature, combines coagulating sedimentation technology, ultraviolet-Fenton high-level oxidation technology and ozonation technology to work in coordination with and processes.Technical process of the present invention is simple, and good waste water treatment effect, processing efficiency are high, and system run all right, has broad application prospects, and particularly has the unapproachable advantage of additive method for unmanageable metal mine beneficiation wastewater.
Embodiment
The present invention includes following steps:
(1) regulate between beneficiation wastewater pH to 3～6, if the original pH of waste water is between this, can regulate;
(2) beneficiation wastewater after adjusting, under stirring and UV-lamp illuminate condition, adds Fe
2+reagent and concentration are that 30% hydrogen peroxide carries out the reaction of ultraviolet-Fenton oxidation, after reaction 30min, add catalyzer, continue reaction 30min～90min;
(3) beneficiation wastewater after oxidizing reaction adds between alkali lye adjusting pH to 8～10 under whipped state, then add successively polymeric aluminum chlorides solution and polymeric anion polyacrylamide solution carries out coagulating sedimentation, after coagulation, stop stirring and leave standstill 15min～120min;
(4) get supernatant liquor after precipitation and pass into ozone and carry out secondary oxidation reaction, the reaction times is 15min～60min;
(5) water outlet after secondary oxidation is returned and is selected in plant process flow or qualified discharge.
In described step (1), regulating the medicament of pH is sulfuric acid, hydrochloric acid, sodium hydroxide or milk of lime.
In described step (2), in ultraviolet-Fenton oxidation reaction process, stirring linear velocity is 0.01m/s～1m/s, and UV-lamp wavelength is 254nm, Fe
2+the order of adding of reagent and hydrogen peroxide is for first adding Fe
2+it is that 30% hydrogen peroxide or both add simultaneously that reagent adds concentration again, and dosage is determined according to waste water quality, and catalyzer is oxalate reagent.
In described step (3), alkali lye is sodium hydroxide solution or milk of lime, and it is 0.1m/s～1m/s that coagulation stirs linear velocity.
In described step (4), the intake of ozone is determined according to supernatant liquor water quality characteristic.
Specific examples 1:
Certain metal mine beneficiation wastewater, pH is that 6.8, COD is 566.4mg/L, and cupric ion is 18.6mg/L, and zine ion is 10.5mg/L, contains in addition other heavy metal ion of trace.Getting this beneficiation wastewater 1L with jar is placed under stirrer, be that under 0.67m/s condition, the sulphuric acid soln with 1% regulates wastewater pH to 4.0 stirring linear velocity, by power 4W, the ultraviolet lamp tube of wavelength 254nm is fixed in jar, add the copperas solution 40mL of 4g/L, 30% hydrogen peroxide 2mL, open after ultraviolet lamp reaction 30min, add the sodium oxalate 5mL of 2g/L, continue reaction 30min, sodium hydroxide solution with 0.5% regulates wastewater pH to 9.0, stirring under the speed of linear velocity 0.8m/s, the polymeric aluminum chlorides solution 3mL that adds 10g/L stirs 5min, then add 0.5 ‰ anionic polyacrylamide solution 2mL, after continuing to stir 2min, regulate stirring linear velocity 0.1m/s to stir 5min, stop stirring, leave standstill 30min, get supernatant liquor and pass into ozone, ozone intake is 50mg, reaction is 15min.After system response water outlet by analysis pH be that 8.5, COD is 17.3mg/L, cupric ion is 0.1mg/L, zine ion 0.9mg/L, first kind pollutent is all within the highest permission emission concentration limit value, after processing, water quality can reach reuse or emission standard.
Specific examples 2:
Certain metal mine beneficiation wastewater, pH is that 6.8, COD is 875.4mg/L, and cupric ion is 87.4mg/L, and lead ion is 43.2mg/L, and zine ion is 17.5mg/L, contains in addition other heavy metal ion of trace.Getting this beneficiation wastewater 1L with jar is placed under stirrer, be that under 0.67m/s condition, the sulphuric acid soln with 1% regulates wastewater pH to 4.0 stirring linear velocity, by power 4W, the ultraviolet lamp tube of wavelength 254nm is fixed in jar, add the copperas solution 60mL of 4g/L, 30% hydrogen peroxide 3mL, open after ultraviolet lamp reaction 30min, add the sodium oxalate 6mL of 2g/L, continue reaction 30min, sodium hydroxide solution with 0.5% regulates wastewater pH to 9.0, stirring under the speed of linear velocity 0.8m/s, the polymeric aluminum chlorides solution 5mL that adds 10g/L stirs 5min, then add 0.5 ‰ anionic polyacrylamide solution 3mL, after continuing to stir 2min, regulate stirring linear velocity 0.1m/s to stir 5min, stop stirring, leave standstill 30min, get supernatant liquor and pass into ozone, ozone intake is 80mg, reaction is 15min.After system response water outlet by analysis pH be that 8.4, COD is 34.6mg/L, cupric ion is 0.5mg/L, zine ion 1.2mg/L, first kind pollutent is all within the highest permission emission concentration limit value, after processing, water quality can reach reuse or emission standard.
Claims (5)
1. a metal mine beneficiation wastewater treatment method, the method comprises the following steps:
(1) regulate between beneficiation wastewater pH to 3～6, if the original pH of beneficiation wastewater is between this, can regulate;
(2) beneficiation wastewater after adjusting, under stirring and UV-lamp illuminate condition, adds Fe
2+reagent and concentration are that 30% hydrogen peroxide carries out the reaction of ultraviolet-Fenton oxidation, after reaction 30min, add catalyzer, continue reaction 30min～90min;
(3) beneficiation wastewater after oxidizing reaction adds between alkali lye adjusting pH to 8～10 under whipped state, then add successively polymeric aluminum chlorides solution and polymeric anion polyacrylamide solution carries out coagulating sedimentation, after coagulation, stop stirring and leave standstill 15min～120min;
(4) get supernatant liquor after precipitation and pass into ozone and carry out secondary oxidation reaction, the reaction times is 15min～60min;
(5) water outlet after secondary oxidation is returned and is selected in plant process flow or qualified discharge.
2. according to a kind of metal mine beneficiation wastewater treatment method described in claims 1, it is characterized in that: in described step (1), regulating the medicament of pH is sulfuric acid, hydrochloric acid, sodium hydroxide or milk of lime.
3. according to a kind of metal mine beneficiation wastewater treatment method described in claims 1, it is characterized in that: in described step (2), in ultraviolet-Fenton oxidation reaction process, stirring linear velocity is 0.01m/s～1m/s, and UV-lamp wavelength is 254nm, Fe
2+the order of adding of reagent and hydrogen peroxide is for first adding Fe
2+it is that 30% hydrogen peroxide or both add simultaneously that reagent adds concentration again, and catalyzer is oxalate reagent.
4. according to a kind of metal mine beneficiation wastewater treatment method described in claims 1, it is characterized in that: in described step (3), alkali lye is sodium hydroxide solution or milk of lime, it is 0.1m/s～1m/s that coagulation stirs linear velocity.
5. according to a kind of metal mine beneficiation wastewater treatment method described in claims 1, it is characterized in that: in described step (4), the intake of ozone is determined according to supernatant liquor water quality characteristic.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104944636A (en) * | 2015-06-07 | 2015-09-30 | 长春黄金研究院 | Non-ferrous metal mine acid wastewater treatment method |
| CN105217900A (en) * | 2015-11-17 | 2016-01-06 | 梅庆波 | A kind for the treatment of process of Pb-Zn deposits beneficiation wastewater |
| CN105254061A (en) * | 2015-10-13 | 2016-01-20 | 桂林市春晓环保科技有限公司 | Treatment method of beneficiation wastewater |
| CN105540962A (en) * | 2015-12-14 | 2016-05-04 | 山东凯盛新材料有限公司 | Treatment method of 1-(2-chloroethoxy)propane-containing waste water |
| CN109824166A (en) * | 2017-11-23 | 2019-05-31 | 上海江柘环境工程技术有限公司 | Photovoltaic wastewater processing system and processing method |
| CN109896611A (en) * | 2017-12-07 | 2019-06-18 | 中国石油天然气股份有限公司 | Method and device for eliminating foam in mineral processing wastewater |
| CN112479427A (en) * | 2020-11-25 | 2021-03-12 | 山东东岳化工有限公司 | Treatment process of fluorite powder drying tail gas washing wastewater |
| CN113264611A (en) * | 2021-05-28 | 2021-08-17 | 中南大学 | Treatment method of molybdenum-tungsten fluorite multi-metal ore dressing wastewater |
| CN113666534A (en) * | 2021-08-23 | 2021-11-19 | 湖南艾森尼克环保科技有限公司 | photocatalysis-Fenton-ozone-electrolysis synergetic oxidation treatment method for nickel-cobalt extraction waste water |
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| CN102992445A (en) * | 2011-09-16 | 2013-03-27 | 苏州科技学院 | Method for treating organic pollutants through steel slag-oxalic acid photo Fenton |
| CN103755106A (en) * | 2014-02-13 | 2014-04-30 | 广州益方田园环保股份有限公司 | Fluidized bed oxidizing tower and treatment process thereof |
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| US6251264B1 (en) * | 1999-04-02 | 2001-06-26 | Hitachi, Ltd. | Water purification apparatus |
| CN101074120A (en) * | 2007-05-23 | 2007-11-21 | 浙江工业大学 | Treatment and resource technology for organic waste water |
| CN101311130A (en) * | 2007-05-23 | 2008-11-26 | 深圳职业技术学院 | Water treatment process of O3/H2O2/multiphase-fenton |
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| CN101602554A (en) * | 2009-06-05 | 2009-12-16 | 湖南有色金属研究院 | Polymetallic copper-lead-zinc ores in high altitude areas beneficiation wastewater is administered and reuse method |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104944636A (en) * | 2015-06-07 | 2015-09-30 | 长春黄金研究院 | Non-ferrous metal mine acid wastewater treatment method |
| CN104944636B (en) * | 2015-06-07 | 2017-03-08 | 长春黄金研究院 | A kind of nonferrous metal mine acid waste water administering method |
| CN105254061A (en) * | 2015-10-13 | 2016-01-20 | 桂林市春晓环保科技有限公司 | Treatment method of beneficiation wastewater |
| CN105217900A (en) * | 2015-11-17 | 2016-01-06 | 梅庆波 | A kind for the treatment of process of Pb-Zn deposits beneficiation wastewater |
| CN105540962A (en) * | 2015-12-14 | 2016-05-04 | 山东凯盛新材料有限公司 | Treatment method of 1-(2-chloroethoxy)propane-containing waste water |
| CN109824166A (en) * | 2017-11-23 | 2019-05-31 | 上海江柘环境工程技术有限公司 | Photovoltaic wastewater processing system and processing method |
| CN109896611A (en) * | 2017-12-07 | 2019-06-18 | 中国石油天然气股份有限公司 | Method and device for eliminating foam in mineral processing wastewater |
| CN112479427A (en) * | 2020-11-25 | 2021-03-12 | 山东东岳化工有限公司 | Treatment process of fluorite powder drying tail gas washing wastewater |
| CN113264611A (en) * | 2021-05-28 | 2021-08-17 | 中南大学 | Treatment method of molybdenum-tungsten fluorite multi-metal ore dressing wastewater |
| CN113666534A (en) * | 2021-08-23 | 2021-11-19 | 湖南艾森尼克环保科技有限公司 | photocatalysis-Fenton-ozone-electrolysis synergetic oxidation treatment method for nickel-cobalt extraction waste water |
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Application publication date: 20140903 |