CN110577305A - Treatment method of complex tungsten polymetallic ore beneficiation wastewater - Google Patents
Treatment method of complex tungsten polymetallic ore beneficiation wastewater Download PDFInfo
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- CN110577305A CN110577305A CN201910773575.XA CN201910773575A CN110577305A CN 110577305 A CN110577305 A CN 110577305A CN 201910773575 A CN201910773575 A CN 201910773575A CN 110577305 A CN110577305 A CN 110577305A
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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- 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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- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
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- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
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- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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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
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- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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Abstract
the invention discloses a treatment method of complex tungsten polymetallic ore beneficiation wastewater, which comprises the following steps: s1, discharging the mill tailings pulp into a combining well; s2, adding 260mg/L of polyferric sulfate with the use amount of ore pulp, and discharging the ore pulp of the tailings of the factory into a tailing pond; s3, stirring for reaction, and standing for settlement; s4, discharging the supernatant into a clean water tank after standing and settling; s5, adding 120mg/L of sodium chlorate into the supernatant, stirring for reaction, and carrying out the next operation; s6, detecting after precipitation, carrying out the next operation after qualification, and adding sodium chlorate in disqualification; s7, discharging after being qualified, the invention has scientific and reasonable structure, safe and convenient use, can further effectively reduce the COD of the external drainage water, ensures that each index reaches the standard, ensures that the wastewater treatment process is more stable and reliable, protects the pilot for the continuous production of a concentrating mill, simultaneously reduces the treatment cost of the concentrating wastewater obviously, and also passes other indexes such as supernatant suspended matters and the like after treatment.
Description
Technical Field
The invention relates to the technical field of beneficiation wastewater treatment, in particular to a treatment method of beneficiation wastewater of complex tungsten polymetallic ores.
Background
A polymetallic ore dressing plant for tungsten-molybdenum-bismuth-fluorite ore adopts a main process flow of ore dressing to perform molybdenum-bismuth and other flotation, bismuth-sulfur mixed flotation, black-white tungsten flotation and fluorite flotation, wherein the ore dressing reagents contained in the ore dressing wastewater comprise organic and inorganic substances such as soda ash, water glass, ethionine, kerosene, BK-205 (an alcohol foaming agent), sodium sulfide, activated carbon, lime, sodium cyanide, lead nitrate, benzohydroxamic acids, aluminum sulfate, oleic acid and the like, the COD (chemical oxygen demand) of the final ore dressing wastewater is generally between 8.5 and 9.5 at a value of 100 to 160mg/L, pH, and the suspended substances are highly difficult to settle, the suspended substances, the pH value and the COD of the ore dressing wastewater are main research treatment objects, and other indexes such as ammonia nitrogen, heavy metals, chromaticity and the like reach the standard;
The existing wastewater treatment process comprises the following steps: the value of COD122mg/L, pH of the mineral processing wastewater is 9.15, 600mg/L of polymeric ferric sulfate pulp is directly added into tailing pulp, the mixture is stirred and reacted for 30min, the mixture is naturally settled for 2h, the value of COD96mg/L, pH of the treated supernatant is 7.16, and suspended matters reach the standard;
however, the polyferric sulfate plays a role in the application of wastewater COD treatment mainly through coagulation adsorption sedimentation and secondarily through oxidation, wastewater with higher COD (more than 130mg/L) is difficult to treat, then the COD of mineral separation wastewater gradually rises, as the grade of raw ore is gradually reduced year by year, the ore property is more and more complex, the mineral separation difficulty is higher and higher, the used mineral separation agents are relatively increased, the concentration of tailings is higher, the concentration of agents in the mineral separation wastewater is increased, the COD of the wastewater is increased, and when the mineral separation wastewater is treated by the polyferric sulfate alone, the pH value and suspended matters can reach the standard, but the COD of the discharged water is higher, sometimes the COD even exceeds the critical point (100mg/L) and does not reach the standard, so that a mineral separation plant stops, in addition, the consumption of the polyferric sulfate is large, and the wastewater.
disclosure of Invention
The invention provides a method for treating complex tungsten polymetallic ore beneficiation wastewater, which can effectively solve the problems that the effect of polymeric ferric sulfate in the wastewater COD treatment application is mainly coagulation adsorption sedimentation and assisted oxidation, the wastewater with higher COD (more than 130mg/L) is difficult to treat, the COD of the beneficiation wastewater gradually rises, as the grade of the original ore decreases year by year, the ore property is more and more complex, the beneficiation difficulty is more and more high, the used beneficiation reagent is relatively increased, finally the concentration of tailings is high, the concentration of the reagent in the beneficiation wastewater is increased, the COD of the wastewater is increased, when the beneficiation wastewater is treated by the polymeric ferric sulfate alone, the pH value and suspended matters can reach the standard, but the COD of the discharged water is higher, sometimes even exceeds the critical point (100mg/L) and does not reach the standard, the beneficiation plant is stopped, in addition, the dosage of the polymeric ferric sulfate is large, the cost of wastewater treatment is high.
In order to achieve the purpose, the invention provides the following technical scheme: a treatment method of complex tungsten polymetallic ore beneficiation wastewater comprises the following steps:
S1, discharging the mill tailings pulp into a combining well;
S2, adding 260mg/L of polyferric sulfate with the use amount of ore pulp, and discharging the ore pulp of the tailings of the factory into a tailing pond;
s3, stirring for reaction, and standing for settlement;
s4, discharging the supernatant into a clean water tank after standing and settling;
s5, adding 120mg/L of sodium chlorate into the supernatant, stirring for reaction, and carrying out the next operation;
S6, detecting after precipitation, carrying out the next operation after qualification, and adding sodium chlorate in disqualification;
And S7, discharging after the qualified product reaches the standard.
according to the technical scheme, the stirring reaction in the step S2 is carried out for 20-40min, and the standing and the sedimentation are carried out for 1.5-2.5h in the step S3.
According to the technical scheme, the stirring reaction in the step S5 is carried out for 3-6 min.
According to the technical scheme, the PH value and the suspended matter are detected in the step S6, the PH value is equal to 7, separation is formed, and the separation of the suspended matter can be realized.
According to the technical scheme, in the step S1, the factory tailing pulp is extracted through the booster pump, the outlet pressure is kept at 0.2mpa in the extraction process, and meanwhile, the factory tailing pulp is filtered to remove metal residues, so that the metal is prevented from participating in reaction, and the discharge detection is not up to the standard.
According to the technical scheme, in the step S5, the precipitate is separated in a tailing pond through a centrifuge for the standing residue, so that metal substances in the tailings are separated, then the residual slurry is dried through a dryer, and the moisture content after drying is 1.5%.
According to the above technical solution, the step S6 is performed by three detections and averaging the detections.
According to the technical scheme, the water quality is detected after the discharge in the step S7, and the chromaticity, the turbidity, the odor, the taste and the residual chlorine are detected in the water quality detection.
according to the technical scheme, sodium chlorate is added after disqualification in the step S6, and the mixture is stirred and then is stood for precipitation again.
According to the technical scheme, sodium chlorate is added after disqualification in the step S6, and the mixture is stirred and then is stood for precipitation again. The precipitates were collected again after failing in step S6, and the precipitates were separated and then measured by a pH meter.
compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure, safe and convenient use, can further effectively reduce the COD of external drainage, ensures that each index reaches the standard, ensures that the wastewater treatment process is more stable and reliable, protects the pilot for the continuous production of a concentrating mill, simultaneously has obviously reduced treatment cost of the concentrating wastewater, ensures that other indexes such as supernatant suspended matters and the like are qualified after treatment, is suitable for popularization and use, and simultaneously is convenient for drying and separating solid slurry in the later period, thereby facilitating reasonable treatment and maximally ensuring the resource utilization.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic flow chart of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1: as shown in figure 1, the invention provides a technical scheme that a treatment method of complex tungsten polymetallic ore beneficiation wastewater comprises the following steps:
S1, discharging the mill tailings pulp into a combining well;
s2, adding 260mg/L of polyferric sulfate with the use amount of ore pulp, and discharging the ore pulp of the tailings of the factory into a tailing pond;
S3, stirring for reaction, and standing for settlement;
S4, discharging the supernatant into a clean water tank after standing and settling;
S5, adding 120mg/L of sodium chlorate into the supernatant, stirring for reaction, and carrying out the next operation;
S6, detecting after precipitation, carrying out the next operation after qualification, and adding sodium chlorate in disqualification;
and S7, discharging after the qualified product reaches the standard.
According to the technical scheme, the stirring reaction is carried out for 30min in the step S2, and the standing and the sedimentation are carried out for 2h in the step S3.
According to the technical scheme, the reaction is stirred for 5min in the step S5.
According to the technical scheme, the PH value and the suspended matters are detected in the step S6, the PH value is equal to 7, separation is formed, and the separation of the suspended matters can be realized.
according to the technical scheme, step S1 the mill tailing pulp is pumped away through the booster pump, outlet pressure is kept at 0.2mpa during pumping away, and meanwhile the mill tailing pulp is filtered to remove metal residues and prevent metal from participating in reaction, so that discharge detection is not up to standard.
According to the technical scheme, in the step S5, the sediment is separated in the tailing pond through a centrifuge for the standing residue, so that metal substances in the tailings are separated, then the residual slurry is dried through a dryer, and the moisture content is 1.5% after the drying.
according to the above technical solution, the step S6 is performed as three detections, and the average value is obtained.
according to the technical scheme, water quality detection is carried out after the discharge in the step S7, and chromaticity, turbidity, odor, taste and residual chlorine are detected in the water quality detection.
According to the above technical scheme, sodium chlorate is added after disqualification in step S6, and the mixture is stirred and then is allowed to stand for precipitation again.
According to the above technical scheme, sodium chlorate is added after disqualification in step S6, and the mixture is stirred and then is allowed to stand for precipitation again. And precipitating again after failing in step S6, separating, and determining by measuring with a pH meter.
Example 2: as shown in figure 1, the invention provides a technical scheme that a treatment method of complex tungsten polymetallic ore beneficiation wastewater comprises the following steps:
S1, discharging the mill tailings pulp into a combining well;
s2, adding 260mg/L of polyferric sulfate with the use amount of ore pulp, and discharging the ore pulp of the tailings of the factory into a tailing pond;
S3, stirring for reaction, and standing for settlement;
s4, discharging the supernatant into a clean water tank after standing and settling;
s5, adding 120mg/L of sodium chlorate into the supernatant, stirring for reaction, and carrying out the next operation;
S6, detecting after precipitation, carrying out the next operation after qualification, and adding sodium chlorate in disqualification;
and S7, discharging after the qualified product reaches the standard.
according to the technical scheme, the stirring reaction is carried out for 40min in the step S2, and the standing and the sedimentation are carried out for 1.5h in the step S3.
According to the technical scheme, the stirring reaction is carried out for 3min in the step S5.
According to the technical scheme, the PH value and the suspended matters are detected in the step S6, the PH value is equal to 7, separation is formed, and the separation of the suspended matters can be realized.
according to the technical scheme, step S1 the mill tailing pulp is pumped away through the booster pump, outlet pressure is kept at 0.2mpa during pumping away, and meanwhile the mill tailing pulp is filtered to remove metal residues and prevent metal from participating in reaction, so that discharge detection is not up to standard.
According to the technical scheme, in the step S5, the sediment is separated in the tailing pond through a centrifuge for the standing residue, so that metal substances in the tailings are separated, then the residual slurry is dried through a dryer, and the moisture content is 1.5% after the drying.
According to the above technical solution, the step S6 is performed as three detections, and the average value is obtained.
according to the technical scheme, water quality detection is carried out after the discharge in the step S7, and chromaticity, turbidity, odor, taste and residual chlorine are detected in the water quality detection.
According to the above technical scheme, sodium chlorate is added after disqualification in step S6, and the mixture is stirred and then is allowed to stand for precipitation again.
according to the above technical scheme, sodium chlorate is added after disqualification in step S6, and the mixture is stirred and then is allowed to stand for precipitation again. And precipitating again after failing in step S6, separating, and determining by measuring with a pH meter.
Example 3: as shown in figure 1, the invention provides a technical scheme that a treatment method of complex tungsten polymetallic ore beneficiation wastewater comprises the following steps:
s1, discharging the mill tailings pulp into a combining well;
S2, adding 260mg/L of polyferric sulfate with the use amount of ore pulp, and discharging the ore pulp of the tailings of the factory into a tailing pond;
S3, stirring for reaction, and standing for settlement;
S4, discharging the supernatant into a clean water tank after standing and settling;
s5, adding 120mg/L of sodium chlorate into the supernatant, stirring for reaction, and carrying out the next operation;
S6, detecting after precipitation, carrying out the next operation after qualification, and adding sodium chlorate in disqualification;
And S7, discharging after the qualified product reaches the standard.
According to the technical scheme, the stirring reaction is carried out for 20min in the step S2, and the standing and the sedimentation are carried out for 2.5h in the step S3.
According to the technical scheme, the stirring reaction is carried out for 6min in the step S5.
According to the technical scheme, the PH value and the suspended matters are detected in the step S6, the PH value is equal to 7, separation is formed, and the separation of the suspended matters can be realized.
According to the technical scheme, step S1 the mill tailing pulp is pumped away through the booster pump, outlet pressure is kept at 0.2mpa during pumping away, and meanwhile the mill tailing pulp is filtered to remove metal residues and prevent metal from participating in reaction, so that discharge detection is not up to standard.
according to the technical scheme, in the step S5, the sediment is separated in the tailing pond through a centrifuge for the standing residue, so that metal substances in the tailings are separated, then the residual slurry is dried through a dryer, and the moisture content is 1.5% after the drying.
According to the above technical solution, the step S6 is performed as three detections, and the average value is obtained.
according to the technical scheme, water quality detection is carried out after the discharge in the step S7, and chromaticity, turbidity, odor, taste and residual chlorine are detected in the water quality detection.
According to the above technical scheme, sodium chlorate is added after disqualification in step S6, and the mixture is stirred and then is allowed to stand for precipitation again.
according to the above technical scheme, sodium chlorate is added after disqualification in step S6, and the mixture is stirred and then is allowed to stand for precipitation again. And precipitating again after failing in step S6, separating, and determining by measuring with a pH meter.
The following tables are prepared by examples 1-3:
| contrast item | example 1 | Example 2 | Example 3 |
| PH | 7.01 | 7.12 | 7.09 |
| Color intensity | 35 | 42 | 47 |
| turbidity degree | 2 | 4 | 5 |
| odor and taste | 0 | 0 | 0 |
| Residual chlorine | <0.5 | <0.5 | <0.5 |
By comparison, it is understood that the pH, color and turbidity are all optimal in example 1, and that examples 1 to 3 all meet the sewage treatment standards.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure, safe and convenient use, can further effectively reduce the COD of external drainage, ensures that each index reaches the standard, ensures that the wastewater treatment process is more stable and reliable, protects the pilot for the continuous production of a concentrating mill, simultaneously has obviously reduced treatment cost of the concentrating wastewater, ensures that other indexes such as supernatant suspended matters and the like are qualified after treatment, is suitable for popularization and use, and simultaneously is convenient for drying and separating solid slurry in the later period, thereby facilitating reasonable treatment and maximally ensuring the resource utilization.
finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A treatment method of complex tungsten polymetallic ore beneficiation wastewater is characterized by comprising the following steps: the method comprises the following steps:
S1, discharging the mill tailings pulp into a combining well;
S2, adding 260mg/L of polyferric sulfate with the use amount of ore pulp, and discharging the ore pulp of the tailings of the factory into a tailing pond;
s3, stirring for reaction, and standing for settlement;
s4, discharging the supernatant into a clean water tank after standing and settling;
S5, adding 120mg/L of sodium chlorate into the supernatant, stirring for reaction, and carrying out the next operation;
S6, detecting after precipitation, carrying out the next operation after qualification, and adding sodium chlorate in disqualification;
And S7, discharging after the qualified product reaches the standard.
2. the method for treating the beneficiation wastewater of the complex tungsten polymetallic ore according to claim 1, wherein the stirring reaction in the step S2 is performed for 20-40min, and the standing and sedimentation in the step S3 are performed for 1.5-2.5 h.
3. The method for treating the beneficiation wastewater of the complex tungsten polymetallic ore according to claim 1, wherein in the step S5, the stirring reaction is performed for 3-6 min.
4. The method for treating the beneficiation wastewater of the complex tungsten polymetallic ore according to claim 1, wherein in the step S6, the detection of the PH value and the suspended matters is carried out, the PH value is equal to 7, the separation is formed, and the separation of the suspended matters can be realized.
5. The method for treating the beneficiation wastewater of the complex tungsten polymetallic ore according to the claim 1, wherein in the step S1, the mill tailing pulp is extracted through a booster pump, the outlet pressure is kept at 0.2mpa during the extraction, and meanwhile, the mill tailing pulp is filtered to remove metal residues, so that the metals are prevented from participating in the reaction, and the discharge detection is not up to the standard.
6. The method for treating the beneficiation wastewater of the complex tungsten polymetallic ore according to the claim 1, wherein in the step S5, the precipitate is separated from the tailings pond by a centrifuge on the standing residue, so as to separate the metal substances in the tailings, and then the residual slurry is dried by a dryer, so that the moisture content is 1.5% after the drying.
7. The method for treating the beneficiation wastewater of the complex tungsten polymetallic ore according to claim 1, wherein the detection of the step S6 is three times, and the average value is obtained.
8. the method for treating complex wolframic polymetallic ore beneficiation wastewater according to claim 1, wherein water quality detection is performed after the discharge in the step S7, and chromaticity, turbidity, odor and taste and residual chlorine are detected in the water quality detection.
9. the method for treating the beneficiation wastewater of the complex tungsten polymetallic ore according to claim 1, wherein sodium chlorate is added after disqualification in the step S6, and the mixture is stirred and then stands for precipitation again.
10. The method for treating the beneficiation wastewater of the complex tungsten polymetallic ore according to claim 9, wherein the beneficiation wastewater is subjected to secondary precipitation after being rejected in the step S6, and is determined by a pH determinator after separation.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115044784A (en) * | 2022-06-16 | 2022-09-13 | 中南大学 | Method for efficiently recovering soluble tungstate |
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| CN101279804A (en) * | 2008-05-23 | 2008-10-08 | 中南大学 | Method for effectively degrading organic components in beneficiation wastewater of sulphide ore |
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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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| CN115044784A (en) * | 2022-06-16 | 2022-09-13 | 中南大学 | Method for efficiently recovering soluble tungstate |
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Application publication date: 20191217 |