CN210595607U - Copper-containing heavy metal wastewater treatment device - Google Patents
Copper-containing heavy metal wastewater treatment device Download PDFInfo
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- CN210595607U CN210595607U CN201921681050.5U CN201921681050U CN210595607U CN 210595607 U CN210595607 U CN 210595607U CN 201921681050 U CN201921681050 U CN 201921681050U CN 210595607 U CN210595607 U CN 210595607U
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Abstract
The utility model relates to a copper-containing heavy metal wastewater treatment device, which comprises a raw water pool, a pretreatment area, a deep treatment area, a final treatment area and a solid-liquid separation area; the pretreatment area comprises an oven, a pretreatment tank arranged in the oven and a plurality of aluminum strips arranged in the pretreatment tank; the advanced treatment area comprises a first reaction tank, a second reaction tank, a third reaction tank, a first NaOH adding tank and a first H, wherein the first reaction tank, the second reaction tank and the third reaction tank are sequentially communicated through a pipeline, and the first NaOH adding tank and the first H are communicated with the first reaction tank2SO4An adding tank, a heavy metal catching agent adding tank communicated with the second reaction tank and a third reaction tankGeneral FeSO4An addition tank and a PAM addition tank; the final stage treatment area comprises a sand filter communicated with the third reaction tank, a clean water tank communicated with the sand filter, a second NaOH adding tank communicated with the clean water tank and a second H2SO4An addition tank; the solid-liquid separation zone comprises a first filter press and a second filter press. The utility model discloses a preliminary treatment and advanced treatment combine together, both guarantee treatment effeciency, again can reduce cost.
Description
Technical Field
The utility model relates to a waste water treatment technical field, in particular to copper-containing heavy metal effluent treatment plant.
Background
Copper present in copper-containing wastewaterThe ions have divalent copper ions and monovalent copper ions according to valence state, and free copper (such as Cu)2+) And complex copper (e.g., copper cyanide complex, copper ammine complex, etc.).
In copper-containing wastewater in the industries of fuel, electroplating and the like, copper ions often exist in a complex form, such as copper cyanide complex ions. Taking acidic copper plating wastewater as an example, Cu is mainly present in the wastewater2+、H+、Fe2+、Fe3+Isocation and SO4 2-、Cl-And (4) plasma. The cyanide plating rinsing wastewater contains 300-450 mg/L of free cyanide ions and 400-550 mg/L of monovalent copper ions.
Pollutants in the copper-containing wastewater generated in the electroplating production process, such as copper sulfate, sulfuric acid, copper pyrophosphate and the like, have the mass concentration of 100mg/L and below 50 mg/L; the copper-containing wastewater generated in the production process of the circuit board comprises copper-containing etching liquid, washing wastewater and the like, the mass concentration of the copper-containing wastewater is 130-150 mg/L and below 20mg/L, the mass concentration of the copper-containing wastewater in the production of the dye is 1291mg/L, and the mass concentration of the copper-containing wastewater in a copper mine is dozens of to hundreds of milligrams per liter.
The treatment method of the complex wastewater is various, and each method has advantages and disadvantages, wherein the treatment effect of the heavy metal trapping agent method is optimal, but if the copper content is too high, the investment cost is too high, and if other methods are adopted to reduce the cost, the treatment efficiency is not good; and the water pollutant of "electroplating pollutant emission standard" (GB 21900-2008), guangdong province "electroplating water pollutant emission standard" (DB 44/1597) discharges the limit value strict requirement very much and always puts the standard into 0.3mg/L for total copper bar, therefore how let treatment effeciency and input cost reach the balance technical staff need constantly go the breakthrough, and the utility model provides a copper-containing heavy metal wastewater treatment device to solve the problem that exists among the prior art, through the retrieval, not discover with the utility model discloses same or similar technical scheme.
SUMMERY OF THE UTILITY MODEL
The utility model discloses the purpose is: the utility model provides a copper-containing heavy metal wastewater treatment device to solve the problem that copper-containing wastewater treatment efficiency and equipment input cost can't reach balance among the prior art.
The technical scheme of the utility model is that: a copper-containing heavy metal wastewater treatment device comprises a raw water tank, a pretreatment zone, a deep treatment zone and a final treatment zone which are sequentially communicated through pipelines, and a solid-liquid separation zone communicated with the pretreatment zone and the deep treatment zone; the pretreatment area comprises an oven, a pretreatment tank arranged in the oven and a plurality of aluminum strips arranged in the pretreatment tank; the advanced treatment area comprises a first reaction tank, a second reaction tank, a third reaction tank, a first NaOH adding tank and a first H, wherein the first reaction tank, the second reaction tank and the third reaction tank are sequentially communicated through a pipeline, and the first NaOH adding tank and the first H are communicated with the first reaction tank2SO4An adding tank, a heavy metal catching agent adding tank communicated with the second reaction tank, and FeSO communicated with the third reaction tank4An addition tank and a PAM addition tank; the final stage treatment area comprises a sand filter communicated with the third reaction tank, a clean water tank communicated with the sand filter, a second NaOH adding tank communicated with the clean water tank and a second H2SO4An addition tank; the solid-liquid separation zone comprises a first filter press and a second filter press, and the first filter press is provided with a first feeding hole, a first water outlet and a first sludge outlet; the first feed inlet is communicated with the lower end of the pretreatment tank and the lower end of the first reaction tank through pipelines, and the first water outlet is communicated with the raw water tank through a pipeline; the second filter press is provided with a second feeding hole, a second water outlet and a second sludge outlet; the second feed inlet is communicated with the lower end of the second reaction tank and the lower end of the third reaction tank through pipelines, and the second water outlet is communicated with the first reaction tank through a pipeline.
Preferably, the cross bar is erected on the pretreatment tank, the limiting blocks which are located on the outer side of the pretreatment tank are fixed at the two ends of the cross bar, and the aluminum strips are hung at the lower end of the cross bar and extend into the pretreatment tank.
Preferably, the first reaction tank is connected with a first PH detector, and the clean water tank is connected with a second PH detector.
Preferably, the first reaction tank, the second reaction tank and the third reaction tank are internally provided with stirring paddles.
Preferably, the clean water tank is communicated with the second reaction tank through a pipeline.
Compared with the prior art, the utility model has the advantages that:
(1) the utility model discloses a two kinds of processing methods are handled copper-containing complex waste water, at first adopt the aluminium catalytic reduction method to carry out the preliminary treatment, aluminum products such as aluminium scrap base plate convenient for material collection and input cost are low, simultaneously can the copper content in the complex waste water of greatly reduced, secondly carry out advanced treatment to the less liquid rethread heavy metal of copper content catching agent method, because copper content has greatly reduced, consequently, can reduce the quantity of heavy metal catching agent, reduce the cost, and the treatment effeciency of heavy metal catching agent is high, can make waste water discharge up to standard.
(2) After reacting for a period of time, the surface of the metal aluminum can be passivated, so that the detachable cross rod is adopted, and the aluminum strip can be conveniently taken out and replaced.
Drawings
The invention will be further described with reference to the following drawings and examples:
fig. 1 is a schematic view of the structure of the present invention;
wherein: 1. a raw water pool, 2, an oven, 3, a pretreatment pool, 4, a cross bar, 5, an aluminum strip, 6, a first reaction pool, 7, a second reaction pool, 8, a third reaction pool, 9, a first NaOH adding tank, 10, a first H2SO4An adding tank, 11, a first PH detector, 12, a heavy metal trapping agent adding tank, 13, FeSO4Adding tank, 14, PAM adding tank, 15, sand filter, 16, clean water tank, 17, second NaOH adding tank, 18, second H2SO4An adding tank, 19, a second PH detector, 20, a first filter press, 21 and a second filter press.
Detailed Description
The following detailed description is made in conjunction with specific embodiments of the present invention:
as shown in figure 1, the copper-containing heavy metal wastewater treatment device comprises a raw water tank 1, a pretreatment zone, an advanced treatment zone and a final treatment zone which are sequentially communicated through pipelines, and a solid-liquid separation zone communicated with the pretreatment zone and the advanced treatment zone.
The pretreatment area is used for pretreating the complexing wastewater with high copper content and effectively reducing the copper content in the wastewater, and comprises an oven 2, a pretreatment tank 3 arranged in the oven 2 and a plurality of aluminum strips 5 arranged in the pretreatment tank 3; the oven 2 is used for providing a good reaction environment, so that the reaction between the waste water and the aluminum strips 5 is facilitated, and the efficiency is improved; a cross bar 4 is erected at the upper end of the pretreatment tank 3, limiting blocks positioned outside the pretreatment tank 3 are fixed at the two ends of the cross bar 4, and a plurality of aluminum strips 5 are hung at the lower end of the cross bar 4 and extend into the pretreatment tank 3; the cross rod 4 is not fixedly connected with the upper end of the pretreatment tank 3, and is limited only by a limiting block, so that the aluminum strips 5 hung below can be conveniently taken out and replaced; the aluminum strip 5 can be made of waste aluminum substrates and other aluminum materials, and has the advantages of convenient material taking, low cost and good treatment effect; because hydrogen is generated in the reaction process, the upper end of the oven 2 is provided with an exhaust port, so that the safety is ensured; during the reaction, the temperature of the oven 2 is set to 80 ℃, the reaction time is 40min, and a layer of copper foil is separated out from the surface of the aluminum strip 5, so that the copper content in the wastewater is effectively reduced; furthermore, two rows of aluminum strips 5 can be arranged, the aluminum strips are placed into the pretreatment tank 3 at different time, and only one row of the aluminum strips is replaced each time, so that the full reaction between the wastewater and the aluminum strips 5 is ensured, and the reaction effect is not influenced by the passivation of all the aluminum strips 5.
The advanced treatment area comprises a first reaction tank 6, a second reaction tank 7, a third reaction tank 8, a first NaOH adding tank 9 and a first H which are communicated with the first reaction tank 6 in sequence through pipelines2SO4An adding tank 10, a heavy metal catching agent adding tank 12 communicated with the second reaction tank 7, and FeSO communicated with the third reaction tank 84An addition tank 13 and a PAM addition tank 14; the pH value of the wastewater is adjusted by adding acid and alkali into the first reaction tank 6, and the first reaction tank 6 is connected with a first pH detector 11 for detecting the pH value in the first reaction tank 6 and adjusting the pH value to be 8; the second reaction tank 7 is used for adding a heavy metal trapping agent to remove copper ions in the wastewater, and the concentration of the heavy metal trapping agent is controlled to be 0.75 g/L; the third reaction tank 8 is used for simultaneously adding FeSO4PAM, since the color of the complex wastewater treated by the heavy metal capture agent is red, FeSO is added4Decolorizing and precipitating with PAM; all be provided with the stirring rake in first reaction tank 6, second reaction tank 7 and the third reaction tank 8 in this advanced treatment district for accelerate the reaction, raise the efficiency.
The final stage treatment area comprises a sand filter 15 communicated with the third reaction tank 8, a clean water tank 16 communicated with the sand filter 15, a second NaOH adding tank 17 and a second H communicated with the clean water tank 162SO4An adding tank 18, wherein the copper content in the water discharged into the clean water tank 16 after being filtered by the sand filter 15 basically reaches the standard, the PH value is adjusted by adding acid and alkali, a second PH detector 19 is connected in the clean water tank 16 and used for detecting the PH value in the clean water tank 16 and adjusting the PH value to be 8, and the water can reach the standard and be discharged; whether the water in the clean water tank 16 reaches the standard or not can be manually or intelligently detected, if not, the clean water tank 16 is communicated with the second reaction tank 7 through a pipeline, and at the moment, the water in the clean water tank 16 can be continuously discharged into the second reaction tank 7 for treatment reaction until the water reaches the standard; as the standard-reaching detection technology of the wastewater is relatively mature, manual detection is realized by manual sampling and detection by using a detector; intellectual detection system detects through equipment oneself, concrete detection method the utility model discloses in do not do detailed description, and the method of chooseing for use selects according to customer input cost.
The solid-liquid separation zone comprises a first filter press 20 and a second filter press 21, wherein the first filter press 20 is provided with a first feeding hole, a first water outlet and a first sludge outlet; the first feed inlet is communicated with the lower end of the pretreatment tank 3 and the lower end of the first reaction tank 6 through pipelines, and the first water outlet is communicated with the raw water tank 1 through a pipeline; the second filter press 21 is provided with a second feeding hole, a second water outlet and a second sludge outlet; the second feed inlet is communicated with the lower end of a second reaction tank 7 and the lower end of a third reaction tank 8 through pipelines, and the second water outlet is communicated with a first reaction tank 6 through a pipeline; the solid impurities discharged from the first sludge outlet and the second sludge outlet are subjected to outsourcing treatment; the first filter press 20 and the second filter press 21 which are separately arranged are convenient for separately processing a front-stage reaction area and a rear-stage reaction area, and reduce the amount of wastewater flowing back to the pretreatment tank 3, mainly because the aluminum strips 5 are passivated after reacting for a long time, the more the amount of wastewater is, the more the replacement times of the aluminum strips 5 are, therefore, the liquid generated by solid-liquid separation of precipitates discharged from the second reaction tank 7 and the third reaction tank 8 directly flows back to the first reaction tank 6, the part of liquid is processed by the heavy metal catching agent, the copper content is less, and the liquid flows back to the first reaction tank 6 and is convenient for subsequent processing.
In this embodiment, sludge pumps are disposed between the pretreatment tank 3 and the first filter press 20, between the first reaction tank 6 and the first filter press 20, between the second reaction tank 7 and the second filter press 21, and between the third reaction tank 8 and the second filter press 21, and water pumps are disposed on the remaining pipes.
The working principle of the utility model is as follows:
(1) all the high-concentration copper-containing complexing wastewater generated in factories and workshops is discharged into a raw water tank 1, and a certain amount (50L) of wastewater is discharged into a pretreatment tank 3 through a water pump;
(2) adjusting the temperature of the oven 2 to 80 ℃, opening the oven 2 for preheating when the oven starts to work every day, wherein the reaction time is 40min, copper foil is separated out on the surface of the aluminum strip 5, sediment is also generated below the pretreatment tank 3, the supernatant flows into the first reaction tank 6, and the sediment is conveyed into the first filter press 20; at the moment, the raw water tank 1 continues to convey the wastewater into the pretreatment tank 3;
(3) at the same time, the wastewater entering the first reaction tank 6 is treated by adding NaOH and H2SO4Adjusting the PH value, observing through a first PH detector 11, adjusting the PH value of the wastewater in the first reaction tank 6 to be 8, and continuously stirring by a stirring paddle in the process to realize the full mixing of the solution; after the pH adjustment is completed, the supernatant flows into the reaction tank, and a small amount of precipitate below the reaction tank is conveyed into the first filter press 20;
(4) the wastewater entering the second reaction tank 7 is added with a heavy metal capture agent to remove copper ions, the addition concentration of the heavy metal capture agent is 0.75g/L, 50L of wastewater is treated in a single time, the amount of the wastewater flowing into the second reaction tank 7 is about 46L, the input amount of the heavy metal capture agent is 34.5g, the wastewater and the heavy metal capture agent are fully mixed by stirring of a stirring paddle in the reaction process, after the reaction is finished, the supernatant is discharged into the third reaction tank 8, and the precipitate below is conveyed into the second filter press 21;
(5) the wastewater entering the third reaction tank 8 is added with FeSO4Decolorizing and precipitating with PAM, stirring with stirring paddle to realize full mixing, discharging supernatant to the sand filter 15 after reaction, and conveying the precipitate below to a second filter press 21; in the process, solid impurities separated by the first filter press 20 are discharged outside and disposed of, and separated liquid is conveyed to the raw water pool 1; solid impurities separated by the second filter press 21 are discharged outside and subjected to external treatment, and separated liquid is conveyed to the first reaction tank 6;
(6) the liquid filtered by the sand filter 15 enters a clean water tank 16 and is added with NaOH and H2SO4Adjusting the PH value, observing through a second PH detector 19, adjusting the PH value of the wastewater in the clean water tank 16 to be 8, manually taking the wastewater in the clean water tank 16 to detect the copper content, discharging the wastewater when the wastewater reaches the standard, and discharging the wastewater into a second reaction tank 7 when the wastewater does not reach the standard to continue to perform reaction treatment by adding a heavy metal capture agent until the copper content reaches the standard.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and therefore, the present invention is considered to be exemplary and not restrictive in any way, since the scope of the present invention is defined by the appended claims, rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and therefore any reference signs in the claims are not intended to be construed as limiting the claims concerned.
Claims (5)
1. A copper-containing heavy metal wastewater treatment device is characterized in thatThe method comprises the following steps: comprises a raw water pool, a pretreatment area, a deep treatment area and a final treatment area which are sequentially communicated through pipelines, and a solid-liquid separation area communicated with the pretreatment area and the deep treatment area; the pretreatment area comprises an oven, a pretreatment tank arranged in the oven and a plurality of aluminum strips arranged in the pretreatment tank; the advanced treatment area comprises a first reaction tank, a second reaction tank, a third reaction tank, a first NaOH adding tank and a first H, wherein the first reaction tank, the second reaction tank and the third reaction tank are sequentially communicated through a pipeline, and the first NaOH adding tank and the first H are communicated with the first reaction tank2SO4An adding tank, a heavy metal catching agent adding tank communicated with the second reaction tank, and FeSO communicated with the third reaction tank4An addition tank and a PAM addition tank; the final stage treatment area comprises a sand filter communicated with the third reaction tank, a clean water tank communicated with the sand filter, a second NaOH adding tank communicated with the clean water tank and a second H2SO4An addition tank; the solid-liquid separation zone comprises a first filter press and a second filter press, and the first filter press is provided with a first feeding hole, a first water outlet and a first sludge outlet; the first feed inlet is communicated with the lower end of the pretreatment tank and the lower end of the first reaction tank through pipelines, and the first water outlet is communicated with the raw water tank through a pipeline; the second filter press is provided with a second feeding hole, a second water outlet and a second sludge outlet; the second feed inlet is communicated with the lower end of the second reaction tank and the lower end of the third reaction tank through pipelines, and the second water outlet is communicated with the first reaction tank through a pipeline.
2. The copper-containing heavy metal wastewater treatment device according to claim 1, characterized in that: the pretreatment tank upper end is erect and is equipped with the horizontal pole, the horizontal pole both ends are fixed with the stopper that is in the pretreatment tank outside, and are a plurality of the aluminium strip is hung and is established at the horizontal pole lower extreme to extend to in the pretreatment tank.
3. The copper-containing heavy metal wastewater treatment device according to claim 1, characterized in that: the first reaction tank is connected with a first PH detector, and the clean water tank is connected with a second PH detector.
4. The copper-containing heavy metal wastewater treatment device according to claim 1, characterized in that: and stirring paddles are arranged in the first reaction tank, the second reaction tank and the third reaction tank.
5. The copper-containing heavy metal wastewater treatment device according to claim 1, characterized in that: the clean water tank is communicated with the second reaction tank through a pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921681050.5U CN210595607U (en) | 2019-10-09 | 2019-10-09 | Copper-containing heavy metal wastewater treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921681050.5U CN210595607U (en) | 2019-10-09 | 2019-10-09 | Copper-containing heavy metal wastewater treatment device |
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| Publication Number | Publication Date |
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| CN210595607U true CN210595607U (en) | 2020-05-22 |
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| CN201921681050.5U Active CN210595607U (en) | 2019-10-09 | 2019-10-09 | Copper-containing heavy metal wastewater treatment device |
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