CN105293791A - Treatment method for manganese ore wastewater - Google Patents
Treatment method for manganese ore wastewater Download PDFInfo
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- CN105293791A CN105293791A CN201510654513.9A CN201510654513A CN105293791A CN 105293791 A CN105293791 A CN 105293791A CN 201510654513 A CN201510654513 A CN 201510654513A CN 105293791 A CN105293791 A CN 105293791A
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Abstract
The invention discloses a treatment method for manganese ore wastewater. The method comprises the following steps of: regulation, precipitation, irradiation, secondary regulation, coagulation and discharge. The treatment method adopts a twice-regulation method so as to effectively convert Mn2+ in water into MnO2, thereby fulfilling the aim of removing manganese; by adding a flocculant in the treatment process, the treatment process is simplified, and flocculating constituents can be rapidly formed so as to be rapidly removed from the water; by matching of irradiation disinfection of ultraviolet rays, influence of wastewater drainage on the environment is greatly reduced; the method has a good treatment effect and high treatment efficiency, adopts a simple process and is a superior treatment method for the manganese ore wastewater.
Description
Technical field
Waste gas and waste liquid technical field of comprehensive utilization of the present invention, is specifically related to a kind for the treatment of process of manganese ore waste water.
Background technology
Manganese is one of important heavy metal monitoring index of ambient water quality pollutent, because China's manganese ore deposit mostly is middle-size and small-size mineral deposit, constrains the scale that Manganese Mine is built, and existing Manganese Mine throughput is general less.Whole nation year consumes manganese ore 1,000 ten thousand more than t, occupy first place in the world, but China's manganese resource lacks relatively, rich ore is less, due to the restriction of each side such as equipment and treatment technology in the exploitation and deep-processing process of a large amount of manganese ore, make polluting containing manganese waste material and Mn-bearing waste water of China comparatively serious, manganese ore mine water pollution can be divided into mineral pollution, Organic pollutants and bacterial contamination.Radio contamination and thermal pollution is also there is in some mine.Mineral pollution has sand, mud particle, dirt, dust, solvency, bronsted lowry acids and bases bronsted lowry etc.; Organic pollutants have the oxidative degradation products of grease, biological metabolic product, timber and other materials.Bacterial contamination is mainly by the pollution of the rock dust, breeze and the associated mineral that are scattered in exploitation, transportation.One large feature of manganese ore pit water is that mn ion content is high, and the manganese in pit water is dissolved in caused by water by the oxide compound of manganese in rocks and minerals, sulfide, carbonate and silicate etc.In oxidising process, manganese moves and generate Mn2 ﹢ in water, and therefore in pit water, manganese mainly exists with Mn2 ﹢ form.In mining process, discharge a large amount of waste water barren rock from down-hole, pollute river, occupy a large amount of farmland, mountain forest, grassland, destroy the eubiosis.
In present water, the harm of manganese has caused the most attention of people, but Mn2 ﹢ rate of oxidation is in neutral conditions very slow, is difficult to be oxidized to Manganse Dioxide by dissolved oxygen.In general, when pH value >7.0, comparatively fast, under identical pH value condition, the oxidation of Mn2 ﹢ is much slower than Fe2 ﹢, and thus in water, the removal of manganese is more much more difficult than iron for the rate of oxidation of the Fe2 ﹢ in underground water.When pH value >9.0, the rate of oxidation of Mn2 ﹢ is just obviously accelerated, Mn2 ﹢ promptly could be oxidized to MnO2 and separate out by dissolved oxygen, thus initial usually through adding the pH value of alkaline matter raising water or adding the chemical process demanganization that strong oxidizer etc. accelerates Mn2 ﹢ rate of oxidation, the present inventor, by carrying out research and analysis to Mn-bearing waste water pollution problem, proposes a kind for the treatment of process of manganese ore waste water.
Summary of the invention
The present invention aims to provide a kind for the treatment of process of manganese ore waste water, to solve numerous manganese ore wastewater treatment difficulty, contaminate environment, the problem that impact is ecological.
The present invention is achieved by the following technical programs:
A treatment process for manganese ore waste water, the method comprises the following steps:
A, adjustment: in manganese ore waste water, add highly basic, control the pH value > 9.5 of waste water in reaction process, the reaction times is 20-25min;
B, precipitation: waste water, according to after the waste water 5-10min after the linear velocity stirring reaction of regulation, is put into settling tank and left standstill 25min, by the MnO that reaction generates by clockwise direction
2get rid of through being separated;
C, irradiation: uviolizing process is carried out to the supernatant liquor of waste water, irradiation time is 5-10min;
D, Secondary Control: in the supernatant liquor through radiation treatment, add strong oxidizer, continue to stir 5-10min, then leave standstill 20min;
E, coagulation: in supernatant liquor, add flocculation agent, leave standstill 15min after continuing to stir 10min;
F, discharge: the precipitate and separate after leaving standstill got rid of, the waste water processed can be sent in pond and get rid of, or directly discharges.
Highly basic in described step a is the one in lime, NaOH.
Stirring linear velocity in described step b is 5-10m/s.
The irradiation distance of described step c middle-ultraviolet lamp radiation treatment is 20-25cm.
Strong oxidizer in described steps d is potassium permanganate.
The flocculation agent added in described step e is the one in iron trichloride, ferrous sulfate.
Beneficial effect of the present invention is: because the manganese in water removes relative difficulty, therefore present invention employs twice adjustment method, effectively by the Mn2 in water
﹢change into MnO
2thus reach the object of demanganization, by adding flocculation agent in treating processes, simplify processes process, can form flocs unit fast, to remove from water rapidly, the illumination-based disinfection of combined with ultraviolet radiation, significantly reduce the impact of waste water eliminating on environment, present method treatment effect is good, processing efficiency is high, technique is simple, is a kind for the treatment of process of excellent manganese ore waste water.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further described, but described in claimed scope is not limited to.
Embodiment one
A treatment process for manganese ore waste water, the method comprises the following steps:
A, adjustment: in manganese ore waste water, add lime, control the pH value > 9.5 of waste water in reaction process, the reaction times is 20min;
B, precipitation: waste water is put into settling tank and left standstill 25min after being the waste water 5min after 5m/s stirring reaction according to linear velocity by clockwise direction, will the MnO that generates of reaction
2get rid of through being separated;
C, irradiation: uviolizing process is carried out to the supernatant liquor of waste water, irradiation distance is 20-25cm, and irradiation time is 5-10min;
D, Secondary Control: in the supernatant liquor through radiation treatment, add potassium permanganate, continue to stir 5min, then leave standstill 20min;
E, coagulation: in supernatant liquor, add iron trichloride, ferrous sulfate, leave standstill 15min after continuing to stir 10min;
F, discharge: the precipitate and separate after leaving standstill got rid of, the waste water processed can be sent in pond and get rid of, or directly discharges.
Embodiment two
A treatment process for manganese ore waste water, the method comprises the following steps:
A, adjustment: in manganese ore waste water, add NaOH, control the pH value > 9.5 of waste water in reaction process, the reaction times is 25min;
B, precipitation: waste water is put into settling tank and left standstill 25min after being the waste water 10min after 10m/s stirring reaction according to linear velocity by clockwise direction, will the MnO that generates of reaction
2get rid of through being separated;
C, irradiation: uviolizing process is carried out to the supernatant liquor of waste water, irradiation distance is 25cm, and irradiation time is 10min;
D, Secondary Control: in the supernatant liquor through radiation treatment, add potassium permanganate, continue to stir 10min, then leave standstill 20min;
E, coagulation: in supernatant liquor, add iron trichloride, ferrous sulfate, leave standstill 15min after continuing to stir 10min;
F, discharge: the precipitate and separate after leaving standstill got rid of, the waste water processed can be sent in pond and get rid of, or directly discharges.
Embodiment three
A treatment process for manganese ore waste water, the method comprises the following steps:
A, adjustment: in manganese ore waste water, add NaOH, control the pH value > 9.5 of waste water in reaction process, the reaction times is 23min;
B, precipitation: waste water is put into settling tank and left standstill 25min after being the waste water 8min after 8m/s stirring reaction according to linear velocity by clockwise direction, will the MnO that generates of reaction
2get rid of through being separated;
C, irradiation: uviolizing process is carried out to the supernatant liquor of waste water, irradiation distance is 23cm, and irradiation time is 8min;
D, Secondary Control: in the supernatant liquor through radiation treatment, add potassium permanganate, continue to stir 8min, then leave standstill 20min;
E, coagulation: in supernatant liquor, add iron trichloride, ferrous sulfate, leave standstill 15min after continuing to stir 10min;
F, discharge: the precipitate and separate after leaving standstill got rid of, the waste water processed can be sent in pond and get rid of, or directly discharges.
Claims (6)
1. a treatment process for manganese ore waste water, is characterized in that: the method comprises the following steps:
A, adjustment: in manganese ore waste water, add highly basic, control the pH value > 9.5 of waste water in reaction process, the reaction times is 20-25min;
B, precipitation: waste water, according to after the waste water 5-10min after the linear velocity stirring reaction of regulation, is put into settling tank and left standstill 25min, by the MnO that reaction generates by clockwise direction
2get rid of through being separated;
C, irradiation: uviolizing process is carried out to the supernatant liquor of waste water, irradiation time is 5-10min;
D, Secondary Control: in the supernatant liquor through radiation treatment, add strong oxidizer, continue to stir 5-10min, then leave standstill 20min;
E, coagulation: in supernatant liquor, add flocculation agent, leave standstill 15min after continuing to stir 10min;
F, discharge: the precipitate and separate after leaving standstill got rid of, the waste water processed can be sent in pond and get rid of, or directly discharges.
2. the treatment process of manganese ore waste water according to claim 1, is characterized in that: the highly basic in described step a is the one in lime, NaOH.
3. the treatment process of manganese ore waste water according to claim 1, is characterized in that: the stirring linear velocity in described step b is 5-10m/s.
4. the treatment process of manganese ore waste water according to claim 1, is characterized in that: the irradiation distance of described step c middle-ultraviolet lamp radiation treatment is 20-25cm.
5. the treatment process of manganese ore waste water according to claim 1, is characterized in that: the strong oxidizer in described steps d is potassium permanganate.
6. the treatment process of manganese ore waste water according to claim 1, is characterized in that: the flocculation agent added in described step e is the one in iron trichloride, ferrous sulfate.
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| CN201510654513.9A CN105293791A (en) | 2015-10-10 | 2015-10-10 | Treatment method for manganese ore wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587430A (en) * | 2016-12-19 | 2017-04-26 | 华中科技大学 | Treatment method of simultaneously removing multiple metal ions in manganiferous waste water |
| CN106784793A (en) * | 2016-12-31 | 2017-05-31 | 深圳市沃特玛电池有限公司 | The preparation method of ternary cathode material of lithium ion battery |
| CN110052489A (en) * | 2019-04-16 | 2019-07-26 | 北京净界新宇环保科技有限公司 | A kind for the treatment of agent and preparation method for manganese mud heavy metal pollution |
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2015
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| US20080203032A1 (en) * | 2007-02-28 | 2008-08-28 | Inco Limited | Method for removing manganese from nickel laterite waste liquors |
| CN101643263A (en) * | 2009-09-02 | 2010-02-10 | 重庆大学 | Method for recovering heavy metal in electrolytic manganese passivating wastewater |
| CN102115284A (en) * | 2011-01-21 | 2011-07-06 | 重庆武陵锰业有限公司 | Method for treating manganese-containing wastewater generated during electrolytic manganese processing |
| CN104030505A (en) * | 2014-06-26 | 2014-09-10 | 长春黄金研究院 | Non-ferrous metal mine flotation wastewater treatment method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587430A (en) * | 2016-12-19 | 2017-04-26 | 华中科技大学 | Treatment method of simultaneously removing multiple metal ions in manganiferous waste water |
| CN106587430B (en) * | 2016-12-19 | 2019-08-13 | 华中科技大学 | Processing method that is a kind of while removing various metals ion in Mn-bearing waste water |
| CN106784793A (en) * | 2016-12-31 | 2017-05-31 | 深圳市沃特玛电池有限公司 | The preparation method of ternary cathode material of lithium ion battery |
| CN110052489A (en) * | 2019-04-16 | 2019-07-26 | 北京净界新宇环保科技有限公司 | A kind for the treatment of agent and preparation method for manganese mud heavy metal pollution |
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Application publication date: 20160203 |