CN110577307A - Efficient low-cost treatment method for tungsten polymetallic ore beneficiation wastewater - Google Patents
Efficient low-cost treatment method for tungsten polymetallic ore beneficiation wastewater Download PDFInfo
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- CN110577307A CN110577307A CN201910784143.9A CN201910784143A CN110577307A CN 110577307 A CN110577307 A CN 110577307A CN 201910784143 A CN201910784143 A CN 201910784143A CN 110577307 A CN110577307 A CN 110577307A
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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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- 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
- C02F1/72—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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- 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
- C02F2001/007—Processes including a sedimentation step
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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
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
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Abstract
The invention discloses a high-efficiency low-cost treatment method of tungsten polymetallic ore beneficiation wastewater, which comprises the following steps: s1, introducing the beneficiation wastewater into a reaction tank; s2, adding sodium chlorate with the dosage of 500mg/L waste water, stirring, standing and settling; s3, draining the clean water in the reaction tank into a clean water tank after sedimentation separation; s4, adding 180mg/L waste water sulfuric acid into the treated supernatant to adjust the pH value to 7.5; s5, detecting after treatment, and discharging after reaching the standard; s6, performing water quality sampling inspection during discharge, stirring for 3-6min in the step S2, standing and settling for 0.8-1.3h, finding a simpler, practical, economic and effective treatment method for the standard discharge of the complex tungsten polymetallic beneficiation wastewater, wherein the treated effluent is not colored, the operation is simpler, the automation is easy to realize, and the cost is low.
Description
Technical Field
the invention relates to the technical field of wastewater treatment, in particular to a high-efficiency low-cost treatment method for tungsten polymetallic ore beneficiation wastewater.
Background
In a complex tungsten-molybdenum-bismuth-fluorite multi-metal ore dressing plant, the main process flow of ore dressing is molybdenum-bismuth-sulfur full flotation-black-white tungsten flotation-fluorite flotation, a large amount of organic and inorganic compound medicaments are added in the flotation process, and the medicaments mainly comprise water glass, ethionine, pine oil, kerosene, sodium sulfide, lead nitrate, benzohydroxamic acid, oleic acid and the like, all the ore dressing wastewater is gathered, added with lime for acting and then pumped to a tailing pond along with tailings, the ore dressing wastewater is discharged along with an overflow well after the tailing pond is clarified, the COD of the ore dressing wastewater discharged from the overflow well of the tailing pond is 110-200 mg/L, the PH value is 10.5-12.0, and heavy metal, ammonia nitrogen, suspended matters and the like reach the standard;
The overflow of a tailing pond is a research object, the COD of the beneficiation wastewater is 169mg/L, PH value and other indexes are qualified, a method of biological agent synergistic oxidation is adopted, namely, 200mg/L sulfuric acid with wastewater dosage is added to adjust the pH value to 3.0-5.0, stirring is carried out for 3min, 960mg/L biological agent with wastewater dosage and 800mg/L oxidizing agent with wastewater dosage are added, stirring reaction is carried out for 30min, 600mg/L NaOH with wastewater dosage is added to adjust the pH value to 11.0, stirring reaction is carried out for 15min, flocculating agent 2mg/L PAM with wastewater dosage is added, stirring reaction is carried out for 3min, standing and settling is carried out for 1h, the pH value of the treated supernatant is adjusted to about 7.5 by adding 120mg/L sulfuric acid with wastewater dosage, the treated wastewater COD is 85mg/L, PH value and is 7.5, the treated wastewater is light yellow,
However, the consumption of biological agents, oxidants and caustic soda is large, the wastewater treatment cost is high, the treated water is colored, often in light yellow or light red, the biological agents contain ferric salts, and iron ions are often incompletely precipitated to cause the water to be colored, the process flow is complex, the operation is difficult, and the automation is difficult to realize.
Disclosure of Invention
the invention provides a high-efficiency low-cost treatment method of tungsten polymetallic ore beneficiation wastewater, which can effectively solve the problems that the biological agent, the oxidant and the caustic soda are large in consumption, the wastewater treatment cost is high, the treated water is colored, often in light yellow or light red, the water is colored due to the fact that the biological agent contains ferric salt and ferric ions are often not completely precipitated, the process flow is complex, the operation is difficult and the automation is realized.
In order to achieve the purpose, the invention provides the following technical scheme: a high-efficiency low-cost treatment method of tungsten polymetallic ore beneficiation wastewater comprises the following steps:
S1, introducing the beneficiation wastewater into a reaction tank;
s2, adding sodium chlorate with the dosage of 500mg/L waste water, stirring, standing and settling;
S3, draining the clean water in the reaction tank into a clean water tank after sedimentation separation;
s4, adding 180mg/L waste water sulfuric acid into the treated supernatant to adjust the pH value to 7.5;
S5, detecting after treatment, and discharging after reaching the standard;
and S6, performing water quality sampling inspection during discharge.
according to the technical scheme, carry out the sample to the ore dressing waste water and preserve in step S1, the later stage of being convenient for contrast, then through filtering, the metal residue in the ore dressing waste water that finishes of prefiltering introduces the ore dressing waste water into the reaction tank through the booster pump, goes out water pressure at 0.15-0.2 mpa.
according to the technical scheme, in the step S2, stirring is carried out for 3-6min, and standing and settling are carried out for 0.8-1.3 h.
According to the technical scheme, the sedimentation separation phenomenon in the step S3 is that the precipitate can be seen to be separated from the supernatant, and no fine floccule entanglement exists in the supernatant.
according to the technical scheme, the supernatant is extracted through the water pump in the step S3, and the filter screen is installed at the water inlet of the water pump, so that the blockage of the water pump and the extraction of the precipitate caused in the extraction of the supernatant are prevented.
according to the technical scheme, in the step S4, the measurement is performed through a PH measurer, the positions rotating 3-6 in the clean water pool are sampled, a highest value and a lowest value are removed, and finally an average value is obtained.
According to the technical scheme, the COD, the visibility of naked eyes, the light transmittance and the PH value of the glass are detected after the glass is processed in the step S5.
According to the technical scheme, in the step S6, the discharged sewage is subjected to sampling inspection, and the sampling inspection rate is 0.5-1L/M3。
According to the technical scheme, the filtering in the step S1 is carried out through a screen, and the mesh number of the screen is 20.
According to the technical scheme, the number of the filter meshes in the step S3 is 50.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure, safe and convenient use, finds a simpler, practical, economic and effective treatment method for the standard discharge of the complex tungsten polymetallic mineral processing wastewater, has no color in the treated effluent, is simpler to operate, is easy to realize automation, and has low cost, and finds that the adoption of sodium chlorate can effectively degrade the COD of the mineral processing wastewater, the COD in the wastewater is also quickly reduced along with the continuous increase of the use amount of the sodium chlorate, the capability of the sodium chlorate to degrade the COD of the mineral processing wastewater is not obviously influenced by the pH value, the treated effluent has no color, the cost is greatly reduced, compared with the prior art, the treatment cost for each part of water with the same degradation of the COD of the sodium chlorate is reduced by 1.5 yuan, the cost of the medicament is obviously reduced, the process flow is greatly reduced, and the automatic control is completely realized on site.
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, and the method for treating the beneficiation wastewater of the tungsten polymetallic ore with high efficiency and low cost comprises the following steps:
s1, introducing the beneficiation wastewater into a reaction tank;
S2, adding sodium chlorate with the dosage of 500mg/L waste water, stirring, standing and settling;
S3, draining the clean water in the reaction tank into a clean water tank after sedimentation separation;
s4, adding 180mg/L waste water sulfuric acid into the treated supernatant to adjust the pH value to 7.5;
S5, detecting after treatment, and discharging after reaching the standard;
and S6, performing water quality sampling inspection during discharge.
According to above-mentioned technical scheme, carry out the sample to ore dressing waste water in step S1 and preserve, the later stage contrast of being convenient for, then through filtering, the metal residue in the ore dressing waste water that finishes of prefiltering introduces the reaction tank with ore dressing waste water through the booster pump subsequently, and effluent pressure is at 0.2 mpa.
According to the technical scheme, stirring is carried out for 5min in the step S2, and standing and settling are carried out for 1 h.
according to the technical scheme, the sedimentation separation phenomenon in the step S3 is that the precipitate can be seen to be separated from the supernatant, and no fine floccule entanglement exists in the supernatant.
According to the technical scheme, the supernatant is extracted through the water pump in the step S3, and the filter screen is installed at the water inlet of the water pump, so that the blockage of the water pump and the extraction of precipitates caused in the supernatant extraction are prevented.
According to the technical scheme, in the step S4, the PH measurer is used for measuring, the position of the rotating position 5 in the clean water tank is sampled, a highest value and a lowest value are removed, and finally an average value is obtained.
according to the above technical solution, the COD, the visibility to the naked eye, the transmittance and the PH value of the sample are measured after the treatment in step S5.
According toIn the technical scheme, the step S6 is used for performing sampling inspection on the discharged sewage, and the sampling inspection rate is 0.6L/M3。
According to the technical scheme, the filtering in the step S1 is carried out through a screen, and the mesh number of the screen is 20.
According to the technical scheme, the number of the filter meshes in the step S3 is 50.
Example 2: as shown in figure 1, the invention provides a technical scheme, and the method for treating the beneficiation wastewater of the tungsten polymetallic ore with high efficiency and low cost comprises the following steps:
S1, introducing the beneficiation wastewater into a reaction tank;
s2, adding sodium chlorate with the dosage of 500mg/L waste water, stirring, standing and settling;
S3, draining the clean water in the reaction tank into a clean water tank after sedimentation separation;
S4, adding 180mg/L waste water sulfuric acid into the treated supernatant to adjust the pH value to 7.5;
S5, detecting after treatment, and discharging after reaching the standard;
and S6, performing water quality sampling inspection during discharge.
according to above-mentioned technical scheme, carry out the sample to ore dressing waste water in step S1 and preserve, the later stage contrast of being convenient for, then through filtering, the metal residue in the ore dressing waste water that finishes of prefiltering introduces the reaction tank with ore dressing waste water through the booster pump subsequently, and effluent pressure is at 0.17 mpa.
According to the technical scheme, in the step S2, stirring is carried out for 4min, and standing and settling are carried out for 1.3 h.
According to the technical scheme, the sedimentation separation phenomenon in the step S3 is that the precipitate can be seen to be separated from the supernatant, and no fine floccule entanglement exists in the supernatant.
according to the technical scheme, the supernatant is extracted through the water pump in the step S3, and the filter screen is installed at the water inlet of the water pump, so that the blockage of the water pump and the extraction of precipitates caused in the supernatant extraction are prevented.
According to the technical scheme, in the step S4, the PH measurer is used for measuring, the position of the 4-position rotating position in the clean water tank is sampled, a highest value and a lowest value are removed, and finally an average value is obtained.
according to the above technical solution, the COD, the visibility to the naked eye, the transmittance and the PH value of the sample are measured after the treatment in step S5.
according to the technical scheme, in the step S6, the discharged sewage is subjected to sampling inspection, and the sampling inspection rate is 0.7L/M3。
According to the technical scheme, the filtering in the step S1 is carried out through a screen, and the mesh number of the screen is 20.
According to the technical scheme, the number of the filter meshes in the step S3 is 50.
Example 3: as shown in figure 1, the invention provides a technical scheme, and the method for treating the beneficiation wastewater of the tungsten polymetallic ore with high efficiency and low cost comprises the following steps:
S1, introducing the beneficiation wastewater into a reaction tank;
s2, adding sodium chlorate with the dosage of 500mg/L waste water, stirring, standing and settling;
s3, draining the clean water in the reaction tank into a clean water tank after sedimentation separation;
S4, adding 180mg/L waste water sulfuric acid into the treated supernatant to adjust the pH value to 7.5;
S5, detecting after treatment, and discharging after reaching the standard;
And S6, performing water quality sampling inspection during discharge.
according to above-mentioned technical scheme, carry out the sample to ore dressing waste water in step S1 and preserve, the later stage contrast of being convenient for, then through filtering, the metal residue in the ore dressing waste water that finishes of prefiltering introduces the reaction tank with ore dressing waste water through the booster pump subsequently, and effluent pressure is at 0.18 mpa.
according to the technical scheme, stirring is carried out for 5min in the step S2, and standing and settling are carried out for 1.2 h.
According to the technical scheme, the sedimentation separation phenomenon in the step S3 is that the precipitate can be seen to be separated from the supernatant, and no fine floccule entanglement exists in the supernatant.
According to the technical scheme, the supernatant is extracted through the water pump in the step S3, and the filter screen is installed at the water inlet of the water pump, so that the blockage of the water pump and the extraction of precipitates caused in the supernatant extraction are prevented.
According to the technical scheme, in the step S4, the PH measurer is used for measuring, the position of the rotating position 6 in the clean water tank is sampled, a highest value and a lowest value are removed, and finally an average value is obtained.
According to the above technical solution, the COD, the visibility to the naked eye, the transmittance and the PH value of the sample are measured after the treatment in step S5.
According to the technical scheme, in the step S6, the discharged sewage is subjected to sampling inspection, and the sampling inspection rate is 0.8L/M3。
According to the technical scheme, the filtering in the step S1 is carried out through a screen, and the mesh number of the screen is 20.
According to the technical scheme, the number of the filter meshes in the step S3 is 50.
the following tables are prepared by examples 1-3 for comparison purposes:
| Item | Example 1 | Example 2 | Example 3 |
| PH | 7.5 | 7.5 | 7.5 |
| COD | 58mg/L | 63mg/L | 65mg/L |
| Visibility | Without fine flocs | Without fine flocs | without fine flocs |
By comparison, the standard of the treatment can be achieved, the COD amount is obviously reduced, the treatment can be qualified, and the COD content in the example 1 is the lowest, so that the treatment is suitable for popularization and application.
Compared with the prior art, the invention has the beneficial effects that: the invention has scientific and reasonable structure, safe and convenient use, finds a simpler, practical, economic and effective treatment method for the standard discharge of the complex tungsten polymetallic mineral processing wastewater, has no color in the treated effluent, is simpler to operate, is easy to realize automation, and has low cost, and finds that the adoption of sodium chlorate can effectively degrade the COD of the mineral processing wastewater, the COD in the wastewater is also quickly reduced along with the continuous increase of the use amount of the sodium chlorate, the capability of the sodium chlorate to degrade the COD of the mineral processing wastewater is not obviously influenced by the pH value, the treated effluent has no color, the cost is greatly reduced, compared with the prior art, the treatment cost for each part of water with the same degradation of the COD of the sodium chlorate is reduced by 1.5 yuan, the cost of the medicament is obviously reduced, the process flow is greatly reduced, and the automatic control is completely realized on site.
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 high-efficiency low-cost treatment method for tungsten polymetallic ore beneficiation wastewater is characterized by comprising the following steps: the method comprises the following steps:
S1, introducing the beneficiation wastewater into a reaction tank;
s2, adding sodium chlorate with the dosage of 500mg/L waste water, stirring, standing and settling;
S3, draining the clean water in the reaction tank into a clean water tank after sedimentation separation;
S4, adding 180mg/L waste water sulfuric acid into the treated supernatant to adjust the pH value to 7.5;
S5, detecting after treatment, and discharging after reaching the standard;
And S6, performing water quality sampling inspection during discharge.
2. The method for treating beneficiation wastewater of tungsten polymetallic ores according to claim 1, wherein in the step S1, beneficiation wastewater is sampled and stored for later comparison, then metal residues in the beneficiation wastewater are primarily filtered through filtering, and then the beneficiation wastewater is introduced into the reaction tank through a booster pump, wherein the effluent pressure is 0.15-0.2 mpa.
3. The efficient and low-cost treatment method for the beneficiation wastewater of the tungsten polymetallic ores according to claim 1, characterized in that in the step S2, stirring is carried out for 3-6min, and standing and settling are carried out for 0.8-1.3 h.
4. The method for treating the beneficiation wastewater of the tungsten polymetallic ore according to claim 1, wherein the sedimentation separation phenomenon in the step S3 is that the precipitate can be seen to be separated from the supernatant, and no fine floccule entanglement exists in the supernatant.
5. the method for efficiently treating the beneficiation wastewater of the tungsten polymetallic ore according to the claim 1, wherein the supernatant is extracted by a water pump in the step S3, and a filter screen is installed at a water inlet of the water pump, so that the blockage of the water pump and the extraction of the precipitate in the extraction of the supernatant are prevented.
6. the method for treating the beneficiation wastewater of the tungsten polymetallic ores according to the claim 1, wherein the determination is performed by a pH determination device in the step S4, a position rotating 3-6 in a clean water tank is sampled, a highest value and a lowest value are removed, and finally an average value is taken.
7. the method for treating the beneficiation wastewater of the tungsten-containing polymetallic ore according to claim 1, wherein COD, visual visibility, light transmittance and pH value of the beneficiation wastewater of the tungsten-containing polymetallic ore are detected after the treatment in the step S5.
8. The method for treating the beneficiation wastewater of the tungsten polymetallic ore according to claim 1, wherein the effluent is subjected to a spot inspection in step S6, and the spot inspection rate is 0.5-1L/M3。
9. The method for efficiently treating the beneficiation wastewater of the tungsten polymetallic ore according to the claim 2, wherein the filtering of the step S1 is performed by a screen with the mesh number of 20.
10. The method for efficiently treating the beneficiation wastewater of the tungsten polymetallic ore according to claim 5, wherein the mesh number of the filter screen in the step S3 is 50 meshes.
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| CN112156886A (en) * | 2020-09-16 | 2021-01-01 | 湖南柿竹园有色金属有限责任公司 | Multi-metal ore dressing and grinding grading flow transformation method |
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| CN112156886A (en) * | 2020-09-16 | 2021-01-01 | 湖南柿竹园有色金属有限责任公司 | Multi-metal ore dressing and grinding grading flow transformation method |
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Application publication date: 20191217 |
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