CN212246327U - Nickel-magnesium wastewater treatment system - Google Patents
Nickel-magnesium wastewater treatment system Download PDFInfo
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- CN212246327U CN212246327U CN202021074463.XU CN202021074463U CN212246327U CN 212246327 U CN212246327 U CN 212246327U CN 202021074463 U CN202021074463 U CN 202021074463U CN 212246327 U CN212246327 U CN 212246327U
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Abstract
The utility model relates to a nickel magnesium effluent disposal system, including at least one ion exchanger, dilute nickel sulfate case, concentrated nickel sulfate case, dilute sulfuric acid case, concentrated sulfuric acid case, lye tank, alkali-washing water tank, running water groove, underground stock solution pond and the outer drainage pond in underground. More nickel ions can be separated from the nickel-magnesium wastewater, the nickel ions in the discharged wastewater are reduced, the pollution to the environment is reduced, and meanwhile, the recovery amount of the nickel ions is also improved.
Description
Technical Field
The utility model relates to the field of environmental protection, concretely relates to nickel magnesium wastewater treatment system and nickel magnesium wastewater treatment method.
Background
The state has a standard for wastewater discharge, nickel belongs to a class of pollutants, the discharge requirement of nickel is lower than 0.5 mg/L, and no specific requirement is provided for magnesium discharge; the traditional treatment method for nickel-magnesium wastewater adopts a mode of adding or reducing precipitation to the nickel-magnesium wastewater, and the main principle is as follows: separating nickel element into precipitate, separating out the precipitate to independently refine the nickel element, recycling the nickel, and independently discharging magnesium-containing wastewater from which the precipitate is removed; the problems of the traditional addition and subtraction precipitation mode are as follows: the nickel and magnesium can not be well separated, a large proportion of nickel element still exists in the discharged magnesium-containing wastewater, and the discharged magnesium-containing wastewater has great pollution to the environment. Meanwhile, more nickel is discharged from magnesium-containing wastewater, so that the recovered nickel is reduced, and the waste of nickel is relatively caused; secondly, the addition and subtraction of sediment need to be configured with a large field for building a water tank, the occupied area is large, and the water treatment efficiency is low.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art, provides a nickel-magnesium wastewater treatment system, and solves the problems of large occupied area and low efficiency of the prior nickel-magnesium wastewater treatment.
The utility model provides a technical scheme that its technical problem adopted is:
in one aspect, a nickel-magnesium wastewater treatment system is provided, comprising
At least one ion exchanger, wherein the ion exchanger is filled with exchange resin suitable for adsorbing nickel ions; is suitable for adsorbing nickel ions in the nickel-magnesium wastewater;
the dilute nickel sulfate box is respectively communicated with the middle opening and the lower opening of the ion exchanger;
the concentrated sulfuric acid nickel box is communicated with the middle port of the ion exchanger;
the dilute sulfuric acid box is communicated with the lower port of the ion exchanger;
the concentrated sulfuric acid box is communicated with the lower port of the ion exchanger;
the lye tank is communicated with the lower port of the ion exchanger;
the alkali washing water tank is communicated with the lower opening of the ion exchanger;
the running water tank is respectively communicated with the upper opening and the lower opening of the ion exchanger;
the underground stock solution pool is communicated with the upper opening of the ion exchanger; and
and the underground water discharge tank is communicated with the lower port of the ion exchanger.
Further, the nickel-magnesium wastewater treatment system also comprises a self-cleaning filter, a white ball filter and an intermediate water tank;
the cleaning filter is respectively communicated with the underground stock solution tank and the white ball filter through pipelines;
the white ball filter is communicated with a middle water tank pipeline, and the middle water tank is communicated with the upper opening of the ion exchanger.
Further, the concentration of the dilute sulfuric acid in the dilute sulfuric acid box is 8%;
the concentrated sulfuric acid concentration in the concentrated sulfuric acid box is 14%;
the concentration of the dilute alkali liquor in the alkali liquor box is 4 percent.
Further, the number of the ion exchangers is three.
On the other hand: the nickel-magnesium wastewater treatment method adopting the nickel-magnesium wastewater treatment system comprises the following steps:
step S10, adsorption: the nickel-magnesium wastewater enters an ion exchanger from an upper port, the exchange resin adsorbs nickel ions in the nickel-magnesium wastewater, and the magnesium-containing wastewater with the nickel ions adsorbed thereon is output to an underground drainage pool through a lower port;
step S20, replace: inputting sulfuric acid solution into an ion exchanger, enabling the sulfuric acid solution to adsorb nickel ions in exchange resin, changing the sulfuric acid solution into nickel sulfate solution, and then conveying the nickel sulfate solution to an external nickel recovery system to refine nickel elements in the nickel sulfate solution;
when the pH value of the nickel sulfate solution is less than 4, no new sulfuric acid solution is input to adsorb nickel ions in the exchange resin;
step S30, cleaning: inputting tap water of a tap water tank into an ion exchanger, cleaning exchange resin, and inputting the cleaned liquid into a dilute sulfuric acid tank to be used as dilute sulfuric acid;
step S40, transformation: inputting alkali liquor into an ion exchanger to make the exchange resin start to transform, and finishing the transformation of the exchange resin when the pH value of the detected output alkali liquor is more than or equal to 8;
step S50, cleaning for standby: clean water enters an ion exchanger, and the exchange resin is washed until the pH value is 8.
Further, step S20 includes the following steps:
step S201, inputting dilute nickel sulfate solution in a dilute nickel sulfate box into an ion exchanger through a lower port, so that the dilute nickel sulfate solution fully absorbs nickel ions absorbed by exchange resin, and the dilute nickel sulfate solution is changed into concentrated nickel sulfate solution; outputting the concentrated sulfuric acid nickel liquid to a concentrated sulfuric acid nickel box from a middle opening;
step 202, inputting dilute sulfuric acid solution in a dilute sulfuric acid box into an ion exchanger through a lower opening, so that the dilute sulfuric acid solution fully absorbs nickel ions absorbed by exchange resin, and the dilute sulfuric acid solution is changed into concentrated sulfuric acid nickel solution; outputting the concentrated sulfuric acid nickel liquid to a concentrated sulfuric acid nickel box from a middle opening;
step S203, inputting concentrated sulfuric acid solution in a concentrated sulfuric acid box into an ion exchanger through a lower port, and enabling the concentrated sulfuric acid solution to absorb nickel ions adsorbed by the exchange resin again to change the concentrated sulfuric acid solution into concentrated sulfuric acid nickel solution; the concentrated sulfuric acid nickel liquid is also output to a concentrated sulfuric acid nickel box from a middle port;
when the pH value of the concentrated sulfuric acid nickel solution is less than 4, stopping inputting the concentrated sulfuric acid nickel solution into the concentrated sulfuric acid nickel box, and discharging the concentrated sulfuric acid nickel solution with the pH value less than 4 in the ion exchange column into the dilute nickel sulfate box from the lower opening.
Further, the nickel-magnesium wastewater sequentially passes through a self-cleaning filter and a hundred-ball filter before entering the ion exchanger.
The utility model has the advantages that:
the utility model discloses a nickel magnesium effluent disposal system and nickel magnesium effluent disposal method obtain improving greatly the treatment effeciency of waste water, can follow the nickel magnesium waste water and separate more nickel ions, reduce the nickel ion in the emission waste water, reduce the pollution to the environment, also promoted the recovery capacity of nickel ion simultaneously.
Drawings
The present invention will be further explained with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a nickel-magnesium wastewater treatment system of the utility model;
the system comprises an ion exchanger 1, a white ball filter 2, an underground stock solution pool 3, a clean filter 4, a tap water tank 5, a dilute nickel sulfate tank 61, a concentrated nickel sulfate tank 62, a concentrated nickel sulfate tank 71, a dilute nickel sulfate tank 72, a concentrated nickel sulfate tank 81, an alkaline solution tank 82, an alkaline washing water tank 9 and an underground drainage pool.
Detailed Description
The invention will now be further described with reference to specific embodiments. The drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the components related to the present invention.
Example one
As shown in fig. 1; the nickel-magnesium wastewater treatment system comprises at least one ion exchanger 1, a dilute nickel sulfate tank 61, a concentrated nickel sulfate tank 62, a dilute sulfuric acid tank 71, a concentrated sulfuric acid tank 72, an alkaline liquid tank 81, an alkaline washing water tank 82, a tap water tank 5, an underground stock solution tank 3 and an underground drainage water tank 9.
Each ion exchanger 1 includes an upper port, a middle port, and a lower port.
The ion exchanger 1 is filled with exchange resin suitable for absorbing nickel ions; is suitable for adsorbing nickel ions in the nickel-magnesium wastewater; the exchange resin is a commercial product, for example, the nickel-removing resin CH-90 can be selected, and users can select other types of exchange resins according to actual requirements.
The dilute nickel sulfate box 61 is respectively communicated with the middle opening and the lower opening of the ion exchanger 1; the concentrated sulfuric acid nickel box 62 is communicated with the middle port of the ion exchanger 1; the dilute sulphuric acid box 71 is communicated with the lower port of the ion exchanger 1; the concentrated sulfuric acid box 72 is communicated with the lower port of the ion exchanger 1;
the lye tank 81 is communicated with the lower port of the ion exchanger 1; the alkali washing water tank 82 is communicated with the lower port of the ion exchanger 1; the running water tank 5 is respectively communicated with the upper opening and the lower opening of the ion exchanger 1; the underground stock solution tank 3 is communicated with the upper opening of the ion exchanger 1; and the underground water discharge tank 9 is communicated with the lower port of the ion exchanger 1.
Specifically, in this embodiment, the nickel-magnesium wastewater treatment system further includes a self-cleaning filter 4, a white ball filter 2, and an intermediate water tank; the cleaning filter 4 is respectively communicated with the underground stock solution tank 3 and the white ball filter 2 through pipelines; the white ball filter 2 is communicated with a middle water tank pipeline, and the middle water tank is communicated with the upper opening of the ion exchanger 1.
The self-cleaning filter 4 is used for removing floating materials and impurities in the wastewater, and the white ball filter 2 is used for removing oil in the wastewater.
Specifically, in this embodiment, the concentration of the dilute sulfuric acid in the dilute sulfuric acid tank 71 is 8%; the concentrated sulfuric acid concentration in the concentrated sulfuric acid box 72 is 14%; the concentration of the dilute alkali liquor in the alkali liquor box 81 is 4%.
Specifically, in this embodiment, the number of the ion exchangers 1 is three; in the wastewater treatment process, the wastewater treatment system can operate two ion exchangers 1, and the other ion exchanger 1 regenerates internal resin, so that the wastewater treatment efficiency of the wastewater treatment system is improved.
The utility model discloses a nickel magnesium effluent disposal system adopts ion exchanger 1 to come to handle nickel magnesium waste water, adsorbs nickel ion through exchange resin in the follow nickel magnesium waste water, according to the exchange resin who chooses for use, can fully adsorb the ion in the nickel waste water, makes the content control of nickel ion in the magnesium waste water that contains of last discharge < 0.1mg/l, has reduced the pollution of environment in the emission waste water.
Then inputting sulfuric acid solution into the ion exchanger 1, absorbing nickel ions in the exchange resin through the sulfuric acid solution, changing the sulfuric acid solution into nickel sulfate solution, discharging the nickel sulfate solution, and treating the nickel sulfate solution to recover the nickel ions therein.
In the nickel-magnesium wastewater treatment system of the embodiment, the sulfuric acid solution includes three kinds, the first kind is dilute sulfuric acid in the dilute sulfuric acid tank 71, and the concentration of the dilute sulfuric acid is about 4%; the second is concentrated sulfuric acid in a concentrated sulfuric acid box 72, the concentration is 8%; the third is dilute nickel sulfate solution in the dilute nickel sulfate tank 61; 4% dilute sulfuric acid and 8% concentrated sulfuric acid can be obtained by direct blending; the dilute nickel sulfate solution is obtained by inputting the part of concentrated nickel sulfate solution into a dilute nickel sulfate box 61 as the dilute nickel sulfate solution for repeated use when the pH value of concentrated sulfuric acid in an ion exchange column is less than 4 and the part of concentrated nickel sulfate solution is less than the nickel content and the sulfuric acid content, and the part of dilute nickel sulfate solution is used as the first sulfuric acid solution to be contacted with exchange resin in the using process; the second path enters 4% dilute sulfuric acid; and 8% concentrated sulfuric acid is input in the third step, and finally, the concentrated sulfuric acid nickel solution with the pH value less than 4 of the 8% concentrated sulfuric acid is continuously stored in a dilute nickel sulfate box 61 as a dilute nickel sulfate solution for repeated use.
After the exchange resin is treated by the three sulfuric acid solutions, the nickel content is very low, then tap water is input from the tap water tank 5 to clean the ion exchanger 1, and the acid solution after cleaning is input into the dilute sulfuric acid tank 71 to be used as the dilute sulfuric acid solution.
After the cleaning, the exchange resin is transformed, so that alkali liquor is input into the ion exchanger 1, the exchange resin is subjected to acid-base synthesis, the pH of the exchange resin is adjusted to about 8, finally, the ion exchanger 1 is cleaned again, and the cleaned ion exchanger 1 can be used for next wastewater treatment.
The utility model discloses a nickel magnesium effluent disposal system obtains improving greatly the treatment effeciency of waste water, can follow the nickel magnesium waste water and separate more nickel ions, reduces the nickel ion in the emission waste water, reduces the pollution to the environment, has also promoted the recovery volume of nickel ion simultaneously.
Sulfuric acid solution enters into contact with the exchange resin in batches, and acid liquor in contact with the exchange resin is changed from light to thick, so that the exchange resin can be well protected, and the service life of the exchange resin is prolonged.
Example two
A nickel-magnesium wastewater treatment method adopts the nickel-magnesium wastewater treatment system in the first embodiment, and comprises the following steps:
step S10, adsorption: the nickel-magnesium wastewater enters the ion exchanger 1 from the upper port, the exchange resin adsorbs nickel ions in the nickel-magnesium wastewater, and the magnesium-containing wastewater with the nickel ions adsorbed thereon is output to an underground drainage pool 9 through the lower port;
step S20, replace: inputting sulfuric acid solution into an ion exchanger 1, enabling the sulfuric acid solution to adsorb nickel ions in exchange resin, changing the sulfuric acid solution into nickel sulfate solution, and then conveying the nickel sulfate solution to an external nickel recovery system to refine nickel elements in the nickel sulfate solution;
when the pH value of the nickel sulfate solution is less than 4, no new sulfuric acid solution is input to adsorb nickel ions in the exchange resin;
step S30, cleaning: tap water from a tap water tank 5 is fed into the ion exchanger 1 to wash the exchange resin, and the liquid after washing is fed into a dilute sulfuric acid tank 71 to be used as dilute sulfuric acid.
Step S40, transformation: inputting alkali liquor into the ion exchanger 1 to make the exchange resin start to transform, and finishing the transformation of the exchange resin when the pH value of the detected output alkali liquor is more than or equal to 8;
step S50, cleaning for standby: clean water enters the ion exchanger 1, and the exchange resin is washed until the pH value is 8.
Specifically, in this embodiment, step S20 includes the following steps:
step S201, inputting dilute nickel sulfate solution in a dilute nickel sulfate box 61 into an ion exchanger 1 through a lower opening, so that the dilute nickel sulfate solution fully absorbs nickel ions absorbed by exchange resin, and the dilute nickel sulfate solution is changed into concentrated nickel sulfate solution; the concentrated sulfuric acid nickel liquid is output to a concentrated sulfuric acid nickel box 62 from a middle opening;
step 202, inputting dilute sulfuric acid (with concentration of 4%) in the dilute sulfuric acid box 71 into the ion exchanger 1 through a lower opening, so that the dilute sulfuric acid fully absorbs nickel ions adsorbed by the exchange resin, and the dilute sulfuric acid is changed into concentrated sulfuric acid nickel solution; the concentrated sulfuric acid nickel liquid is output to a concentrated sulfuric acid nickel box 62 from a middle opening;
step S203, inputting concentrated sulfuric acid solution (with concentration of 8%) in the concentrated sulfuric acid box 72 into the ion exchanger 1 through a lower port, so that the concentrated sulfuric acid solution absorbs nickel ions adsorbed by the exchange resin again, and the concentrated sulfuric acid solution is changed into concentrated sulfuric acid nickel solution; the concentrated sulfuric acid nickel liquid is also output to the concentrated sulfuric acid nickel box 62 from a middle port;
when the pH value of the concentrated sulfuric acid nickel solution is less than 4, the concentrated sulfuric acid nickel solution is stopped being input into the concentrated sulfuric acid nickel box 62, and at the moment, the concentrated sulfuric acid nickel solution with the pH value less than 4 in the ion exchange column is discharged into the dilute nickel sulfate box 61 from the lower opening.
Specifically, in this embodiment, the nickel-magnesium wastewater sequentially passes through the self-cleaning filter 4 and the hundred-ball filter before entering the ion exchanger 1.
Waste water treatment system can two ion exchanger 1 operation at the waste water treatment in-process, and another ion exchanger 1 carries out the regeneration of inside resin to improve waste water treatment system and to the treatment effeciency of waste water, reduce the nickel ion in the waste water of discharging, reduce the pollution to the environment, also promoted the recovery capacity of nickel ion simultaneously.
In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (4)
1. A nickel-magnesium wastewater treatment system is characterized by comprising
At least one ion exchanger, wherein the ion exchanger is filled with exchange resin suitable for adsorbing nickel ions; is suitable for adsorbing nickel ions in the nickel-magnesium wastewater;
the dilute nickel sulfate box is respectively communicated with the middle opening and the lower opening of the ion exchanger;
the concentrated sulfuric acid nickel box is communicated with the middle port of the ion exchanger;
the dilute sulfuric acid box is communicated with the lower port of the ion exchanger;
the concentrated sulfuric acid box is communicated with the lower port of the ion exchanger;
the lye tank is communicated with the lower port of the ion exchanger;
the alkali washing water tank is communicated with the lower opening of the ion exchanger;
the running water tank is respectively communicated with the upper opening and the lower opening of the ion exchanger;
the underground stock solution pool is communicated with the upper opening of the ion exchanger; and
and the underground water discharge tank is communicated with the lower port of the ion exchanger.
2. The nickel-magnesium wastewater treatment system according to claim 1,
the nickel-magnesium wastewater treatment system also comprises a self-cleaning filter, a white ball filter and an intermediate water tank;
the cleaning filter is respectively communicated with the underground stock solution tank and the white ball filter through pipelines;
the white ball filter is communicated with a middle water tank pipeline, and the middle water tank is communicated with the upper opening of the ion exchanger.
3. The nickel-magnesium wastewater treatment system according to claim 1,
the concentration of the dilute sulfuric acid in the dilute sulfuric acid box is 8%;
the concentrated sulfuric acid concentration in the concentrated sulfuric acid box is 14%;
the concentration of the dilute alkali liquor in the alkali liquor box is 4 percent.
4. The nickel-magnesium wastewater treatment system according to claim 1,
the number of the ion exchangers is three.
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| CN202021074463.XU CN212246327U (en) | 2020-06-11 | 2020-06-11 | Nickel-magnesium wastewater treatment system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111559780A (en) * | 2020-06-11 | 2020-08-21 | 江苏博隆锦欣环保设备有限公司 | Nickel-magnesium wastewater treatment system and nickel-magnesium wastewater treatment method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111559780A (en) * | 2020-06-11 | 2020-08-21 | 江苏博隆锦欣环保设备有限公司 | Nickel-magnesium wastewater treatment system and nickel-magnesium wastewater treatment method |
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