CN109970264A - A kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method - Google Patents
A kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method Download PDFInfo
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- CN109970264A CN109970264A CN201910174289.1A CN201910174289A CN109970264A CN 109970264 A CN109970264 A CN 109970264A CN 201910174289 A CN201910174289 A CN 201910174289A CN 109970264 A CN109970264 A CN 109970264A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The present invention relates to waste water Odor Control Technology fields, specifically disclose a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method, the following steps are included: (1) dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution are added into evaporation tank, bacterium and green planktonic organism in solution are killed；(2) sodium hydroxide solution is added into evaporation tank, adjusts the pH value of waste water in evaporation tank；(3) flocculant is added into evaporation tank, makes the suspended matter rapid subsidence in evaporation tank in solution, solution is as clear as crystal.The method of the present invention realizes the green and harmonious, social value, the value of environmental protection and the ecological value with higher of evaporation tank ecological environment.
Description
Technical field
The invention belongs to waste water Odor Control Technology fields, and in particular to a kind of In-situ Leaching Uranium Mine evaporation tank evil
Smelly pollutant control method.
Background technique
In-situ leaching uranium technology is a kind of centralized procurement, choosing, smelting in the environmentally friendly uranium deposit production practice of one,
Prepared leaching agent is underground ore bed by fluid injection drilling injection, it is anti-that chemistry is carried out with the uranium ore under natural mode of occurence
It answers, dissolves the uranium in ore and enter solution, formed and contain uranium solution, then soil surface treatment new process is promoted to by production well.
During production run, pumping liquid measure ratio is controlled using the method that partial adsorbates tail washings is discharged into evaporation tank, from
And ensure the molten leaching range-controlled of ore bed.Meanwhile partly precipitated mother liquor and technique waste water are also required to be discharged into evaporation tank in production technology
In.These waste water are much larger than the advantage of rainfall, natural evaporation using evaporation capacity after entering evaporation tank.
However as the increase of ground-dipping uranium extraction engineering operation time, various waste water pass through long-term evaporation in evaporation tank,
In the compound qualities concentration such as various ions, organic matter and nitrogen phosphorus gradually rise.Especially the organic concentrations such as nitrogen phosphorus compared with
Gao Shi can breed green planktonic organism in summer and autumn.In planktonic organism metabolism and bacterial corrosion fermentation process, distribute
Various foul odours out generate adverse effect to ambient enviroment.
Summary of the invention
The purpose of the present invention is to provide a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control methods, effectively solve
CO2+O2In-situ Leaching Uranium Mine evaporation tank odorant pollutant emission problem.
Technical scheme is as follows:
A kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method is suitable for CO2+O2In-situ Leaching Uranium Mine, including
Following steps:
Step 1: dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution are added into evaporation tank,
Kill the bacterium and green planktonic organism in solution；
Step 2: be added sodium hydroxide solution into evaporation tank, adjust the pH value of waste water in evaporation tank 10.5~13.0 it
Between；
Step 3: flocculant being added into evaporation tank, makes the suspended matter rapid subsidence in evaporation tank in solution, solution is limpid
It is transparent.
By facilitating the processing and addition for carrying out solution in evaporation tank edge installation circulating pump, make-up tank and pipeloop,
Specifically includes the following steps:
Step 1: in the edge of evaporation tank installation circulating pump, make-up tank and pipeloop；
Prepare dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution in make-up tank, and with following
Ring pump is added in evaporation tank；
After free chloro concentration is greater than 6mg/L in evaporation tank, stop that mixed solution is added, tentatively to remove in evaporation tank
Green planktonic organism；
Step 2: will in make-up tank prepared sodium hydroxide solution, by circulating pump be added evaporation tank in, adjust steam
The pH value of waste water in pond is sent out between 10.5~13.0；
Step 3: flocculant being directly added into evaporation tank, makes the suspended matter rapid subsidence in evaporation tank in solution, solution
It is as clear as crystal.
In step 1, the quality of the dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution is dense
Degree range is 20~80mg/L.
In step 1, the dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mass ratio are 3:1~5:
1。
In step 3, the flocculant is high acid anhydride biological flocculant, and molecular weight is 2000~30,000,000, and mass concentration is
10~30ppm.
In step 1, after stopping that mixed solution is added, circulating pump is continued to run, and waste water in evaporation tank is stirred evenly.
In step 1, the mass concentration of dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution is
32~80mg/L, dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mass ratio are 3.5:1~5:1.
In step 3, wastewater volume is 3200m in evaporation tank3, flocculant 48kg is added.
In step 1, the mass concentration of dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution is
43~80mg/L, dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mass ratio are 4.2:1~5:1.
In step 3, wastewater volume is 2000m in evaporation tank3, flocculant 50kg is added.
Remarkable result of the invention is:
(1) the method for the present invention is by the way that dodecyl benzyl dimethyl ammonium chloride and dichlord isocyanurice acid are added into evaporation tank
Sodium solution kills bacterium and green planktonic organism in solution, solves planktonic organism metabolism and bacterial corrosion was fermented
The malodor problem that journey generates.
(2) the method for the present invention keeps the suspended matter in solution quick by the way that sodium hydroxide and flocculant are added into evaporation tank
Sedimentation, solution are as clear as crystal.
(3) the method for the present invention realizes the green of evaporation tank ecological environment and harmonious, social value with higher, environmental protection
Value and the ecological value.
Detailed description of the invention
Fig. 1 is that odorant pollutant of the present invention controls process flow diagram；
In figure: 1. evaporation tanks；2. make-up tank；3. circulating pump.
Specific embodiment
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
A kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as shown in Figure 1 is suitable for CO2+O2Ground leaching is adopted
Uranium mine, comprising the following steps:
Step 1: in the edge of evaporation tank 1 installation circulating pump 3, make-up tank 2 and pipeloop；
Step 2: preparing dodecyl benzyl dimethyl ammonium chloride in make-up tank 2 and sodium dichloro cyanurate mixing is molten
Liquid, and be added in evaporation tank 1 with circulating pump 3；
The mass concentration range of the dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution is
20~80mg/L, dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mass ratio are 3:1~5:1；
After free chloro concentration is greater than 6mg/L in evaporation tank 1, stop that mixed solution is added, tentatively to remove in evaporation tank 1
Green planktonic organism；
Step 3: will in make-up tank 2 prepared sodium hydroxide solution, by circulating pump 3 be added evaporation tank 1 in, adjust
The pH value of waste water is between 10.5~13.0 in evaporation tank 1；
Step 4: flocculant directly is added into evaporation tank 1, makes the suspended matter rapid subsidence in evaporation tank 1 in solution, it is molten
Liquid is as clear as crystal；
The flocculant be high acid anhydride biological flocculant, molecular weight be 2000~30,000,000, mass concentration be 10~
30ppm。
Embodiment 1
A kind of In-situ Leaching Uranium Mine evaporation tank solution odorant pollutant control method is suitable for CO2+O2In-situ Leaching Uranium Mine,
The following steps are included:
Step 1: circulating pump, preparation of reagents slot and pipeloop being installed at evaporation tank edge；
Step 2: prepared dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate will be mixed in make-up tank
Solution is closed, is added in evaporation tank with circulating pump；
The mixed solution mass concentration is 32mg/L, dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate
Mass ratio is 3.5:1；
After free chloro concentration reaches 6.5mg/L in evaporation tank, stopping that mixed solution is added, circulating pump continues to run for 24 hours,
Waste water in evaporation tank is stirred evenly；
Step 3: prepared sodium hydroxide solution will be adjusted and be evaporated in circulating pump addition evaporation tank in make-up tank
Pond wastewater pH is 12.5；
Step 4: flocculant being added directly into evaporation tank, flocculant is high acid anhydride biological flocculant, molecular weight 2000
~3,000 ten thousand, addition concentration is 15ppm, and wastewater volume is 3200m in evaporation tank3, flocculant 48kg is added altogether.
Embodiment 2
A kind of In-situ Leaching Uranium Mine evaporation tank solution odorant pollutant control method is suitable for CO2+O2In-situ Leaching Uranium Mine,
The following steps are included:
Step 1: circulating pump, preparation of reagents slot and pipeloop being installed at evaporation tank edge；
Step 2: prepared dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate will be mixed in make-up tank
Solution is closed, is added in evaporation tank with circulating pump；
The mixed solution mass concentration is 43mg/L, dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate
Mass ratio is 4.2:1；
After free chloro concentration reaches 7.2mg/L in evaporation tank, stopping that mixed solution is added, circulating pump continues to run for 24 hours,
Waste water in evaporation tank is stirred evenly；
Step 3: prepared sodium hydroxide solution will be adjusted and be evaporated in circulating pump addition evaporation tank in make-up tank
Pond wastewater pH is 11.6；
Step 4: flocculant being added directly into evaporation tank, flocculant is high acid anhydride biological flocculant, molecular weight 2000
~3,000 ten thousand, addition concentration is 25ppm, and wastewater volume is 2000m in evaporation tank3, flocculant 50kg is added altogether.
Claims (10)
1. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method, it is characterised in that: be suitable for CO2+O2Ground-dipping uranium extraction
Mine, comprising the following steps:
Step 1: dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution being added into evaporation tank, kills
Bacterium and green planktonic organism in solution；
Step 2: sodium hydroxide solution being added into evaporation tank, adjusts the pH value of waste water in evaporation tank between 10.5~13.0；
Step 3: flocculant being added into evaporation tank, makes the suspended matter rapid subsidence in evaporation tank in solution, solution is as clear as crystal.
2. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as described in claim 1, it is characterised in that: logical
Cross and circulating pump, make-up tank and pipeloop be installed at evaporation tank edge, facilitate the processing and addition for carrying out solution, specifically include with
Lower step:
Step 1: in the edge of evaporation tank installation circulating pump, make-up tank and pipeloop；
Dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution are prepared in make-up tank, and use circulating pump
It is added in evaporation tank；
After free chloro concentration is greater than 6mg/L in evaporation tank, stop that mixed solution is added, tentatively to remove the green in evaporation tank
Planktonic organism；
Step 2: will in make-up tank prepared sodium hydroxide solution, by circulating pump be added evaporation tank in, adjust evaporation tank
The pH value of interior waste water is between 10.5~13.0；
Step 3: flocculant being directly added into evaporation tank, makes the suspended matter rapid subsidence in evaporation tank in solution, solution is limpid
It is transparent.
3. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as claimed in claim 2, it is characterised in that: step
In rapid 1, the mass concentration range of the dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution is 20
~80mg/L.
4. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as claimed in claim 3, it is characterised in that: step
In rapid 1, the dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mass ratio are 3:1~5:1.
5. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as claimed in claim 4, it is characterised in that: step
In rapid 3, the flocculant is high acid anhydride biological flocculant, and molecular weight is 2000~30,000,000, and mass concentration is 10~30ppm.
6. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as claimed in claim 5, it is characterised in that: step
In rapid 1, after stopping that mixed solution is added, circulating pump is continued to run, and waste water in evaporation tank is stirred evenly.
7. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as claimed in claim 6, it is characterised in that: step
In rapid 1, the mass concentration of dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution is 32~80mg/L,
Dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mass ratio are 3.5:1~5:1.
8. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as claimed in claim 7, it is characterised in that: step
In rapid 3, wastewater volume is 3200m in evaporation tank3, flocculant 48kg is added.
9. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as claimed in claim 6, it is characterised in that: step
In rapid 1, the mass concentration of dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mixed solution is 43~80mg/L,
Dodecyl benzyl dimethyl ammonium chloride and sodium dichloro cyanurate mass ratio are 4.2:1~5:1.
10. a kind of In-situ Leaching Uranium Mine evaporation tank odorant pollutant control method as claimed in claim 9, it is characterised in that:
In step 3, wastewater volume is 2000m in evaporation tank3, flocculant 50kg is added.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174289.1A CN109970264B (en) | 2019-03-08 | 2019-03-08 | Method for controlling malodorous pollutants in evaporation pond of in-situ leaching uranium mining mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910174289.1A CN109970264B (en) | 2019-03-08 | 2019-03-08 | Method for controlling malodorous pollutants in evaporation pond of in-situ leaching uranium mining mine |
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| CN109970264A true CN109970264A (en) | 2019-07-05 |
| CN109970264B CN109970264B (en) | 2021-09-17 |
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| CN109970264B (en) | 2021-09-17 |
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