CN110655230A - Treatment method of circulating water for copper material production - Google Patents
Treatment method of circulating water for copper material production Download PDFInfo
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- 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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- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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Abstract
The invention provides a method for treating circulating water in copper material production, which comprises the following steps: s1, discharging the circulating water into an adjusting tank, and adding an alkaline reagent through an automatic dosing device to adjust the pH value of the circulating water to 8-9; s2, pumping the circulating water with the pH adjusted in the step S1 into a coagulation and precipitation integrated device for flocculation treatment, and then precipitating to obtain supernatant and sludge at the bottom; s3, pumping the supernatant obtained in the step S2 into an intermediate water tank, pumping the supernatant into a filter tank for adsorption and filtration when the liquid level reaches a certain degree, discharging the obtained purified water into a clean water tank, and directly returning to the production flow for use or discharge; and S4, pumping the sludge obtained in the step S2 into a sludge pool, pumping the sludge into a sludge compression device for filter pressing treatment when a certain amount of sludge is accumulated, and discharging the obtained filtrate back into an adjusting tank for treatment through a pipeline. The method of the invention has good purification effect on the circulating water, the water quality of the purified water is close to neutral, the chroma is pure, and the purified water can be directly recycled or discharged.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a treatment method of circulating water for copper material production.
Background
Equipment cooling water and washing water can be generated in the production process of copper materials, the two water can not be separated, the two water can be mixed together at present to be used as circulating water for circulating cooling, the washing water is tap water, and the circulating water discharged every day is about 20m3. Acetylene is required to be burnt and heated in the production process, carbon black can be generated due to incomplete combustion, and the content of suspended substances in circulating water is high and the chromaticity exceeds the standard. The main pollutants in the circulating water after the test comprise suspended matters, Cu, Pb, Zn and the like, wherein the suspended matter content is increased along with the increase of the circulating times, the concentration of the suspended matters is also increased, and the circulating water treatment method is a main object of circulating water treatment. The circulating water is black, and suspended particles are extremely fine and cannot naturally settle. The main component of the suspension is carbon black, also known as carbon black, which is an amorphous carbon. Light, loose and extremely fine black powder, has very large specific surface area ranging from 10 to 3000m2The term "gas black" refers to natural gas, lamp black refers to oil, and acetylene black refers to acetylene. Carbon black consisting of aggregates composed of the size and form of the aggregates and the number of particles per aggregate is called high-structure carbon black, and the structural properties of carbon black are expressed by the degree of aggregation of carbon black particles into chains or grapes. The common oil absorption value shows the structural property, the larger the oil absorption value is, the higher the structural property of the carbon black is, a space network channel is easy to form, and the carbon black is not easy to damage.
The circulating water is one of the main causes of water source and soil pollution, because of the existence of more heavy metals and carbon black, the improper treatment of the electroplating wastewater can easily cause great pollution to the environment, and if the electroplating wastewater which is not properly treated can easily cause surface water and soil pollution, serious harm can be caused to human beings and other organisms.
Disclosure of Invention
The invention aims to solve the problems and provides a circulating water treatment method with high treatment quality and high treatment efficiency, which adopts the following technical scheme:
a treatment method of circulating water for copper material production comprises the following steps:
s1, discharging the circulating water into an adjusting tank, and adding an alkaline reagent through an automatic dosing device to adjust the pH value of the circulating water to 8-9;
s2, pumping the circulating water with the pH adjusted in the step S1 into a coagulating sedimentation integrated device, adding a flocculating agent for flocculation treatment, and then performing sedimentation treatment to obtain supernatant and sludge at the bottom;
s3, pumping the supernatant obtained in the step S2 into an intermediate water tank for storage, pumping the supernatant into a filter tank for adsorption and filtration treatment when the liquid level reaches a certain degree to obtain purified water, discharging the purified water into a clean water tank, and directly returning to the production flow for use or discharge;
and S4, pumping the sludge obtained in the step S2 into a sludge pool for storage, pumping the sludge into a sludge compression device for filter pressing treatment when a certain amount of sludge is accumulated, and discharging filtrate obtained by filter pressing back into an adjusting tank for treatment through a pipeline.
The invention integrates coagulation and sedimentation, saves land occupation and capital construction investment, and reduces head loss of circulating water delivery. Circulating water is sequentially regulated in pH and water quantity through a regulating tank, suspended matters, Cu, Pb, Zn and the like in the circulating water are flocculated and precipitated through coagulation and precipitation integrated equipment, and supernate and sludge are obtained; introducing the supernatant into an intermediate water tank, pumping the supernatant into a filter tank through a water filtering pump for adsorption filtration, further removing impurities in the supernatant, introducing purified water obtained by adsorption filtration into a clean water tank for storage, and directly recycling or discharging the purified water; and discharging the sludge into a sludge tank, sending filter residues obtained by a sludge compression device to qualified units for treatment, and returning filter liquor obtained after filter pressing to a regulating tank for treatment. The method for treating the circulating water has a good purifying effect on the circulating water, can effectively remove suspended matters, has a good treatment effect on heavy metal ions, COD (chemical oxygen demand) and the like in the circulating water, and has the characteristics of wide application range, convenience in operation, lower treatment cost and the like.
Further, the coagulation and sedimentation integrated equipment comprises a flocculation reaction tank and a sedimentation tank, wherein the flocculation reaction tank is connected with the sedimentation tank through a pipeline.
Further, in the step S1, the alkaline reagent is a sodium hydroxide solution with a mass concentration of 2-10%.
Further, in step S1, the automatic medicine feeding device includes an alkaline chemical barrel, a metering pump installed on the alkaline chemical barrel, and a pH control system connected to the metering pump.
Further, the pH control system comprises a pH sensor and a controller, wherein the pH sensor is used for detecting the pH value of circulating water in the adjusting tank and feeding back a pH signal to the controller, and the controller is used for controlling the metering pump to quantitatively add the sodium hydroxide solution.
Further, the flocculant is an inorganic flocculant, and/or an inorganic polymer flocculant, and/or an organic polymer flocculant.
Further, the adding amount of the inorganic flocculant or the inorganic polymer flocculant is 1-10 mg/L.
Further, the adding concentration of the organic polymeric flocculant is 1-10 ppm.
Further, the treatment method of the copper material production circulating water of the invention also comprises at least one of the following technical characteristics:
the inorganic flocculant comprises one or more of aluminum sulfate, aluminum chloride, ferric sulfate, ferric chloride and alum;
the inorganic polymer flocculant comprises one or more of polyaluminium chloride, polyaluminium sulfate, polyferric chloride and polyferric sulfate;
the organic polymeric flocculant comprises one or more of polyacrylamide, styrene sulfonate copolymer, lignosulfonate copolymer, acrylic acid copolymer, methacrylic acid copolymer, quaternized acrylamide polymer, cationic derivative of polyacrylamide, amphoteric polyacrylamide polymer (such as amphoteric polyacrylamide flocculant with carboxyl and aminomethyl groups), and acrylamide graft copolymer.
Further, the flocculating agent is added through a flocculating agent dosing device, and the flocculating agent dosing device comprises an inorganic flocculating agent medicine barrel, and/or an inorganic polymer flocculating agent medicine barrel, and/or an organic polymer flocculating agent medicine barrel, and a metering pump arranged on the inorganic flocculating agent medicine barrel, and/or the inorganic polymer flocculating agent medicine barrel, and/or the organic polymer flocculating agent medicine barrel. Preferably, the metering pump is automatically controlled by a PLC controller, and the flocculating agent is automatically and quantitatively added.
Further, the regulating reservoir also comprises a stirring device, preferably a submersible stirrer, for preventing suspended matter from being deposited at the bottom.
Furthermore, the clean water tank is provided with a back flush water pump which is respectively connected with the clean water tank and the filter tank through pipelines. And through arranging the back-flushing water pump, impurities trapped in the filter material layer of the filter tank are removed, so that the filtering capacity of the filter tank is recovered in a short time.
Further, the treatment method of the copper material production circulating water of the invention also comprises at least one of the following technical characteristics:
s1, pumping the circulating water with the adjusted pH value into a coagulating sedimentation integrated device through a submersible pump;
pumping the supernatant obtained in the step S2 into a middle water pool through a filter pump for storage;
and pumping the sludge obtained in the step S2 into a sludge tank by a sludge pump for storage.
Furthermore, the regulating reservoir also comprises a liquid level controller which is connected with the submersible pump and used for controlling the starting and stopping of the submersible pump;
and/or the middle water tank is provided with a liquid level controller which is connected with the filtering water pump and used for controlling the starting and stopping of the filtering water pump;
and/or the sludge pool is provided with a liquid level controller which is connected with the mud pump and is used for controlling the start and stop of the mud pump.
The invention can obtain the following beneficial effects:
1. the method for treating the circulating water can effectively remove suspended matters, has a good treatment effect on heavy metal ions, COD (chemical oxygen demand) and the like in the circulating water, and has the characteristics of wide application range, convenience in operation, environmental friendliness, lower treatment cost and the like.
2. The device has simple structure, and the coagulating sedimentation is designed integrally, thereby saving the occupied area and capital construction investment and reducing the head loss of circulating water conveying.
3. The method has the advantages of reducing power consumption equipment to the maximum extent, reducing power consumption in later-stage operation, having simple process flow, belonging to mature process, low price of used medicament, good precipitation effect and low operation cost.
4. The invention adopts a coagulating sedimentation method to ensure that the sediment and the particles in the circulating water form larger alum floc, thereby forming the sediment more quickly, discharging the supernatant as soon as possible, shortening the time of circulating water treatment and improving the treatment efficiency.
5. The method has high automation degree, good purification effect on the circulating water, nearly neutral water quality of the purified water and pure chroma, and can be directly recycled for copper material production or discharge.
Drawings
FIG. 1 is a schematic structural diagram of a circulating water treatment system according to an embodiment of the present invention;
FIG. 2 is a flow chart of a circulating water treatment process according to an embodiment of the present invention;
description of reference numerals: the system comprises a regulating tank 1, a coagulating sedimentation integrated device 2, an intermediate water tank 3, a filter tank 4, a clean water tank 5, a sludge tank 6, an alkaline chemical tank 11, a metering pump 12, a pH sensor 13, a controller 14, a submersible pump 15, a first liquid level controller 16, a stirring device 17, a flocculation reaction tank 21, a sedimentation tank 22, an inorganic flocculant chemical tank 23, an inorganic polymer flocculant chemical tank 24, an organic polymer flocculant chemical tank 25, a stirring device 26, a metering pump 27, a filtering water pump 31, a second liquid level controller 32, a backwashing water pump 51, a sludge compression device 61, a slurry pump 62 and a third liquid level controller 63.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1 and 2, a method for treating circulating water in copper material production comprises the following steps:
s1, discharging the circulating water into the adjusting tank 1, wherein the adjusting tank 1 is provided with an automatic dosing device and comprises an alkaline chemical barrel 11, a metering pump 12 installed on the alkaline chemical barrel 11 and a pH control system connected with the metering pump 12, the pH control system comprises a pH sensor 13 and a controller 14, the pH sensor 13 detects the pH value of the circulating water in the adjusting tank 1 and feeds back a pH signal to the controller 14, and the controller 14 controls the metering pump 12 to quantitatively add 2 wt% of sodium hydroxide solution, so that the pH value of the circulating water is 8-8.2.
S2, pumping the circulating water with the pH adjusted in the step S1 into a coagulating sedimentation integrated device 2 through a submersible pump 15, adding 5mg/L of aluminum sulfate and 5mg/L of aluminum chloride for flocculation treatment, and then performing sedimentation treatment to obtain supernatant and sludge at the bottom.
And S3, pumping the supernatant obtained in the step S2 into an intermediate water tank 3 through a water pump for storage, pumping the supernatant into a filter tank 4 through a filter water pump 31 for adsorption and filtration treatment when the liquid level reaches a certain degree to obtain purified water, discharging the purified water into a clean water tank 5, and directly returning to the production flow for use or discharge.
And S4, pumping the sludge obtained in the step S2 into a sludge pool 6 for storage, pumping the sludge into a sludge compression device 61 for filter pressing treatment when a certain amount of sludge is accumulated, and discharging filtrate obtained by filter pressing back into the regulating tank 1 for treatment through a pipeline.
The invention integrates coagulation and sedimentation, saves land occupation and capital construction investment, and reduces head loss of circulating water delivery. Circulating water is sequentially regulated in pH and water quantity through a regulating tank, suspended matters, Cu, Pb, Zn and the like in the circulating water are flocculated and precipitated through coagulation and precipitation integrated equipment, and supernate and sludge are obtained; introducing the supernatant into an intermediate water tank, pumping the supernatant into a filter tank through a water filtering pump for adsorption filtration, introducing purified water obtained by adsorption filtration into a clean water tank for storage, and directly returning the purified water to the production flow for use or discharge; and discharging the sludge into a sludge tank, sending filter residues obtained by a sludge compression device to qualified units for treatment, and returning filter liquor obtained after filter pressing to a regulating tank for treatment. The circulating water treatment method has the advantages of good purifying effect on circulating water, simple structure, high automation degree, convenient operation and low operating cost.
Example 2:
as shown in fig. 1 and 2, a method for treating circulating water in copper material production comprises the following steps:
s1, discharging the circulating water into the adjusting tank 1, wherein the adjusting tank 1 is provided with an automatic dosing device and comprises an alkaline chemical barrel 11, a metering pump 12 installed on the alkaline chemical barrel 11 and a pH control system connected with the metering pump 12, the pH control system comprises a pH sensor 13 and a controller 14, the pH sensor 13 detects the pH value of the circulating water in the adjusting tank 1 and feeds back a pH signal to the controller 14, and the controller 14 controls the metering pump 12 to quantitatively add 8.5 wt% of sodium hydroxide solution, so that the pH value of the circulating water is 8.5-8.8.
S2, pumping the circulating water with the pH adjusted in the step S1 into a flocculation reaction tank 21 in the coagulation and precipitation integrated equipment 2 through a submersible pump 15, wherein the flocculation reaction tank 21 is provided with a flocculating agent dosing device, an inorganic polymer flocculating agent medicine barrel 24 is added with 7.5mg/L polyaluminum chloride through a metering pump 27, an organic polymer flocculating agent medicine barrel 25 is added with 3ppm polyacrylamide and 2ppm styrene sulfonate copolymer through a metering pump 27 for flocculation treatment, and then the circulating water is pumped into a precipitation tank 22 for precipitation treatment to obtain supernatant and sludge at the bottom.
And S3, pumping the supernatant obtained in the step S2 into an intermediate water tank 3 through a water pump for storage, pumping the supernatant into a filter tank 4 through a filter water pump 31 for adsorption and filtration treatment when the liquid level reaches a certain degree to obtain purified water, discharging the purified water into a clean water tank 5, and directly returning to the production flow for use or discharge.
And S4, pumping the sludge obtained in the step S2 into a sludge pool 6 for storage, pumping the sludge into a sludge compression device 61 for filter pressing treatment when a certain amount of sludge is accumulated, and discharging filtrate obtained by filter pressing back into the regulating tank 1 for treatment through a pipeline.
Example 3:
as shown in fig. 1 and 2, a method for treating circulating water in copper material production comprises the following steps:
s1, discharging the circulating water into the adjusting tank 1, wherein the adjusting tank 1 is provided with an automatic dosing device and comprises an alkaline chemical barrel 11, a metering pump 12 installed on the alkaline chemical barrel 11 and a pH control system connected with the metering pump 12, the pH control system comprises a pH sensor 13 and a controller 14, the pH sensor 13 detects the pH value of the circulating water in the adjusting tank 1 and feeds back a pH signal to the controller 14, and the controller 14 controls the metering pump 12 to quantitatively add 6.5 wt% of sodium hydroxide solution, so that the pH value of the circulating water is 8.2-8.5.
S2, pumping the circulating water with the pH adjusted in the step S1 into a flocculation reaction tank 21 in the coagulation and precipitation integrated equipment 2 through a submersible pump 15, wherein the flocculation reaction tank 21 is provided with a flocculating agent dosing device, an inorganic polymer flocculating agent medicine barrel 24 is added with 4mg/L polyferric chloride and 4mg/L polyferric sulfate through a metering pump 27, an organic polymer flocculating agent medicine barrel 25 is added with 5ppm of a lignosulfonate copolymer and 5ppm of amphoteric polyacrylamide with carboxyl and aminomethyl through the metering pump 27 for flocculation treatment, the metering pump 27 is automatically controlled through a PLC controller, a flocculating agent is automatically and quantitatively added, and then the circulating water after the flocculation treatment is pumped into a precipitation tank 22 for precipitation treatment to obtain supernatant and sludge at the bottom.
And S3, pumping the supernatant obtained in the step S2 into an intermediate water tank 3 through a water pump for storage, pumping the supernatant into a filter tank 4 through a filter water pump 31 for adsorption and filtration treatment when the liquid level reaches a certain degree to obtain purified water, discharging the purified water into a clean water tank 5, and directly returning to the production flow for use or discharge.
And S4, pumping the sludge obtained in the step S2 into a sludge pool 6 for storage, pumping the sludge into a sludge compression device 61 for filter pressing treatment when a certain amount of sludge is accumulated, and discharging filtrate obtained by filter pressing back into the regulating tank 1 for treatment through a pipeline.
Example 4:
as shown in fig. 1 and 2, a method for treating circulating water in copper material production comprises the following steps:
s1, discharging circulating water into an adjusting tank 1, wherein the adjusting tank 1 is provided with an automatic dosing device and a first liquid level controller 16 (a float switch, model: ST-M15-2, controls the starting and stopping of a submersible pump 15);
wherein, the automatic reagent feeding device includes alkaline explosive barrel 11, install measuring pump 12 on alkaline explosive barrel 11, the pH control system who is connected with measuring pump 12, pH control system includes pH sensor 13 and controller 14, pH sensor 13 detects the pH value of the interior circulating water of equalizing basin 1 and feeds back pH signal to controller 14, 7.5 wt% sodium hydroxide solution is added to controller 14 control measuring pump 12 ration, and stir through agitating unit 17 (adopting dive mixer) simultaneously, prevent the deposit of suspended solid bottom, make the pH of circulating water at 8 ~ 8.8.
S2, monitoring the liquid level in the regulating reservoir 1 through the first liquid level controller 16, controlling the submersible pump 15 to pump the circulating water with the pH adjusted in the step S1 into the flocculation reaction tank 21 in the coagulation and precipitation integrated equipment 2 when the liquid level reaches the set highest height, and stopping the operation of the submersible pump 15 when the liquid level reaches the set lowest height.
The flocculation reaction tank 21 is provided with a flocculant dosing device, an inorganic flocculant drug barrel 23 is added with ferric chloride 3mg/L through a metering pump 27, an inorganic polymer flocculant drug barrel 24 is added with polymeric ferric chloride 3mg/L through a metering pump 27, an organic polymer flocculant drug barrel 25 is added with 2.5ppm of lignosulfonate copolymer and 5ppm of acrylic acid copolymer through a metering pump 27 for flocculation treatment, wherein the metering pump 27 is automatically controlled through a PLC controller, a flocculant is automatically and quantitatively added, and then circulating water after flocculation treatment is pumped into a sedimentation tank 22 for sedimentation treatment to obtain supernatant and sludge at the bottom.
S3, pumping the supernatant obtained in the step S2 into an intermediate water tank 3 through a water pump for storage, wherein the intermediate water tank 3 is provided with a second liquid level controller 32 for controlling the start and stop of the filtering water pump 31; when the liquid level reaches the set highest height, the second liquid level controller 32 controls the filter water pump 31 to pump the supernatant into the filter tank 4, the supernatant is subjected to adsorption filtration treatment to obtain purified water, and the obtained purified water is discharged into the clean water tank 5 and directly returned to the production flow for use or discharge; when the liquid level reaches the set minimum height, the filtration water pump 31 stops working.
S4, pumping the sludge obtained in the step S2 into a sludge pool 6 for storage, wherein the sludge pool 6 is provided with a third liquid level controller 63 for controlling the start and stop of a sludge pump 62; when the sludge is accumulated to the set highest height, the third liquid level controller 63 controls the mud pump 62 to pump the sludge into the sludge compression device 61 to perform filter pressing treatment on the sludge, and filtrate obtained by filter pressing is discharged back into the regulating tank 1 through a pipeline for treatment; the mud pump 62 stops when the liquid level reaches a set minimum level.
Example 5:
as shown in fig. 1 and 2, a method for treating circulating water in copper material production comprises the following steps:
s1, discharging circulating water into an adjusting tank 1, wherein the adjusting tank 1 is provided with an automatic dosing device and a first liquid level controller 16 (a float switch, model: ST-M15-2, controls the starting and stopping of a submersible pump 15);
wherein, the automatic reagent feeding device includes alkaline explosive barrel 11, install measuring pump 12 on alkaline explosive barrel 11, the pH control system who is connected with measuring pump 12, pH control system includes pH sensor 13 and controller 14, pH sensor 13 detects the pH value of the interior circulating water of equalizing basin 1 and feeds back pH signal to controller 14, 5 wt% sodium hydroxide solution is added to controller 14 control measuring pump 12 ration, and stir through agitating unit 17 (adopting dive mixer) simultaneously, prevent the deposit of suspended solid bottom, make the pH of circulating water 8 ~ 8.5.
S2, monitoring the liquid level in the regulating reservoir 1 through the first liquid level controller 16, controlling the submersible pump 15 to pump the circulating water with the pH adjusted in the step S1 into the flocculation reaction tank 21 in the coagulation and precipitation integrated equipment 2 when the liquid level reaches the set highest height, and stopping the operation of the submersible pump 15 when the liquid level reaches the set lowest height.
The flocculation reaction tank 21 is provided with a flocculant dosing device, an inorganic flocculant drug barrel 23 is added with 2.5mg/L of alum and 2.5mg/L of ferric sulfate through a metering pump 27, an inorganic polymer flocculant drug barrel 24 is added with 3mg/L of polymeric ferric sulfate through a metering pump 27, an organic polymer flocculant drug barrel 25 is added with 3.5ppm of methacrylic acid copolymer, 3.5ppm of quaternized acrylamide polymer and 3ppm of acrylamide graft copolymer through a metering pump 27 for flocculation treatment, wherein the metering pump 27 is automatically controlled through a PLC (programmable logic controller), flocculants are automatically and quantitatively added, and a stirrer 26 is arranged in each flocculant drug barrel to uniformly mix the flocculants; then the circulating water after flocculation treatment is pumped into a sedimentation tank 22 for sedimentation treatment to obtain supernatant and sludge at the bottom.
S3, pumping the supernatant obtained in the step S2 into an intermediate water tank 3 through a water pump for storage, wherein the intermediate water tank 3 is provided with a second liquid level controller 32 for controlling the start and stop of the filtering water pump 31; when the liquid level reaches the set highest height, the second liquid level controller 32 controls the filter water pump 31 to pump the supernatant into the filter tank 4, the supernatant is subjected to adsorption filtration treatment to obtain purified water, and the obtained purified water is discharged into the clean water tank 5 and directly returned to the production flow for use or discharge; when the liquid level reaches the set lowest height, the filtering water pump 31 stops working; the clean water tank 5 is provided with a back flush water pump 51, water in the clean water tank 5 is pumped periodically to clean the filter tank 4, impurities trapped in a filter material layer of the filter tank 4 are removed, and the filter tank 4 is enabled to recover the filtering capacity in a short time.
S4, pumping the sludge obtained in the step S2 into a sludge pool 6 for storage, wherein the sludge pool 6 is provided with a third liquid level controller 63 for controlling the start and stop of a sludge pump 62; when the sludge is accumulated to the set highest height, the third liquid level controller 63 controls the mud pump 62 to pump the sludge into the sludge compression device 61 to perform filter pressing treatment on the sludge, and filtrate obtained by filter pressing is discharged back into the regulating tank 1 through a pipeline for treatment; the mud pump 62 stops when the liquid level reaches a set minimum level.
The water quality of the circulating water treated in the examples 1 to 5 was analyzed and compared with the untreated circulating water and the indirect emission limit of the national emission standard for pollutants for copper, nickel and cobalt (GB25467-2010), and the data are shown in the following table.
TABLE 1
As can be seen from the data in the table, the content of COD, metal ions and suspended matters in the circulating water treated by the method is greatly reduced, the circulating water meets the national discharge standard, the water quality is close to neutral, and the chromaticity is pure, which shows that the method has good treatment effect on the circulating water.
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 modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. A treatment method of circulating water in copper material production is characterized by comprising the following steps:
s1, discharging the circulating water into an adjusting tank, and adding an alkaline reagent through an automatic dosing device to adjust the pH value of the circulating water to 8-9;
s2, pumping the circulating water with the pH adjusted in the step S1 into a coagulating sedimentation integrated device, adding a flocculating agent for flocculation treatment, and then performing sedimentation treatment to obtain supernatant and sludge at the bottom;
s3, pumping the supernatant obtained in the step S2 into an intermediate water tank for storage, pumping the supernatant into a filter tank for adsorption and filtration treatment when the liquid level reaches a certain degree to obtain purified water, discharging the purified water into a clean water tank, and directly returning to the production flow for use or discharge;
and S4, pumping the sludge obtained in the step S2 into a sludge pool for storage, pumping the sludge into a sludge compression device for filter pressing treatment when a certain amount of sludge is accumulated, and discharging filtrate obtained by filter pressing back into an adjusting tank for treatment through a pipeline.
2. The method for treating the circulating water produced from the copper material according to claim 1, wherein the coagulation and precipitation integrated equipment comprises a flocculation reaction tank and a sedimentation tank, and the flocculation reaction tank is connected with the sedimentation tank through a pipeline; and/or
In the step S1, the alkaline reagent is a sodium hydroxide solution with the mass concentration of 2-10%.
3. The method for treating the circulating water for copper material production according to claim 1, wherein in step S1 the automatic dosing device comprises an alkaline chemical barrel, a metering pump mounted on the alkaline chemical barrel, and a pH control system connected with the metering pump.
4. The method for treating the circulating water for copper material production according to claim 3, wherein the pH control system comprises a pH sensor and a controller, the pH sensor is used for detecting the pH value of the circulating water in the adjusting tank and feeding back a pH signal to the controller, and the controller is used for controlling the metering pump to quantitatively add the sodium hydroxide solution.
5. The method for treating the circulating water for the production of the copper material according to claim 1, wherein the flocculant is an inorganic flocculant, and/or an inorganic polymer flocculant, and/or an organic polymer flocculant;
the adding amount of the inorganic flocculant or the inorganic polymer flocculant is 1-10 mg/L;
the adding concentration of the organic polymeric flocculant is 1-10 ppm.
6. The method for treating the circulating water for copper material production according to claim 5, characterized by further comprising at least one of the following technical features:
the inorganic flocculant comprises one or more of aluminum sulfate, aluminum chloride, ferric sulfate, ferric chloride and alum;
the inorganic polymer flocculant comprises one or more of polyaluminium chloride, polyaluminium sulfate, polyferric chloride and polyferric sulfate;
the organic polymeric flocculant comprises one or more of polyacrylamide, styrene sulfonate copolymer, lignosulfonate copolymer, acrylic acid copolymer, methacrylic acid copolymer, quaternized acrylamide polymer, cationic derivative of polyacrylamide, amphoteric polyacrylamide polymer and acrylamide grafted copolymer.
7. The method for treating the circulating water for the production of the copper material, according to claim 5, is characterized in that the flocculant is added through a flocculant adding device, and the flocculant adding device comprises an inorganic flocculant medicine barrel and/or an inorganic polymer flocculant medicine barrel and/or an organic polymer flocculant medicine barrel, and a metering pump which is arranged on the inorganic flocculant medicine barrel and/or the inorganic polymer flocculant medicine barrel and/or the organic polymer flocculant medicine barrel.
8. The treatment method of the copper material production circulating water as defined in claim 1, wherein the conditioning tank further comprises a stirring device, preferably a submersible stirrer; and/or
The clean water tank is provided with a back flush water pump which is respectively connected with the clean water tank and the filter tank through pipelines.
9. The method for treating the circulating water for copper material production according to claim 1, characterized by further comprising at least one of the following technical features:
s1, pumping the circulating water with the adjusted pH value into a coagulating sedimentation integrated device through a submersible pump;
pumping the supernatant obtained in the step S2 into a middle water pool through a filter pump for storage;
and pumping the sludge obtained in the step S2 into a sludge tank by a sludge pump for storage.
10. The method for treating the circulating water for copper material production according to claim 9, wherein the regulating reservoir further comprises a liquid level controller connected to the submersible pump for controlling the start and stop of the submersible pump; and/or
The middle water tank is provided with a liquid level controller which is connected with the filtering water pump and used for controlling the starting and stopping of the filtering water pump; and/or
The sludge tank is provided with a liquid level controller which is connected with the slurry pump and used for controlling the start and stop of the slurry pump.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113428958A (en) * | 2021-07-12 | 2021-09-24 | 重庆市梁平排水有限公司 | Desliming wastewater treatment process |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1486939A (en) * | 2003-07-28 | 2004-04-07 | 李显贵 | Sewage and waste water treating apparatus and method with natural organic polymer flocculant |
| US20110062081A1 (en) * | 2008-04-24 | 2011-03-17 | Veolia Water Solutions & Technologies Support | Process for Treating Waste From a Membrane Filtration Plant |
| CN102351344A (en) * | 2011-07-08 | 2012-02-15 | 无锡市霄鹰环境科技有限公司 | Tin-bearing waste liquid recovery system and recovery technology |
| CN202643394U (en) * | 2012-05-05 | 2013-01-02 | 合肥志宇环保科技有限公司 | HC (hydrocarbon compound) coagulating sedimentation integrated sewage treatment device |
| CN104591487A (en) * | 2014-12-23 | 2015-05-06 | 安徽省天虹绿洲环保科技有限公司 | Dimethylformamide and dimethylamine wastewater treatment process for synthetic leather production |
| CN109110992A (en) * | 2018-09-03 | 2019-01-01 | 大渊环境技术（厦门）有限公司 | A kind of plasma coagulation integrated effluent disposal system and processing method |
-
2019
- 2019-10-08 CN CN201910949169.4A patent/CN110655230A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1486939A (en) * | 2003-07-28 | 2004-04-07 | 李显贵 | Sewage and waste water treating apparatus and method with natural organic polymer flocculant |
| US20110062081A1 (en) * | 2008-04-24 | 2011-03-17 | Veolia Water Solutions & Technologies Support | Process for Treating Waste From a Membrane Filtration Plant |
| CN102351344A (en) * | 2011-07-08 | 2012-02-15 | 无锡市霄鹰环境科技有限公司 | Tin-bearing waste liquid recovery system and recovery technology |
| CN202643394U (en) * | 2012-05-05 | 2013-01-02 | 合肥志宇环保科技有限公司 | HC (hydrocarbon compound) coagulating sedimentation integrated sewage treatment device |
| CN104591487A (en) * | 2014-12-23 | 2015-05-06 | 安徽省天虹绿洲环保科技有限公司 | Dimethylformamide and dimethylamine wastewater treatment process for synthetic leather production |
| CN109110992A (en) * | 2018-09-03 | 2019-01-01 | 大渊环境技术（厦门）有限公司 | A kind of plasma coagulation integrated effluent disposal system and processing method |
Non-Patent Citations (1)
| Title |
|---|
| 闫大鹏等: "《非传统水资源利用技术及应用》", 30 November 2013, 郑州：黄河水利出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113428958A (en) * | 2021-07-12 | 2021-09-24 | 重庆市梁平排水有限公司 | Desliming wastewater treatment process |
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