CN104528987A - Nickel-containing wastewater treatment method and equipment - Google Patents
Nickel-containing wastewater treatment method and equipment Download PDFInfo
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- CN104528987A CN104528987A CN201410767488.0A CN201410767488A CN104528987A CN 104528987 A CN104528987 A CN 104528987A CN 201410767488 A CN201410767488 A CN 201410767488A CN 104528987 A CN104528987 A CN 104528987A
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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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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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
- C02F1/52—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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- 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
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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
- C02F1/722—Oxidation by peroxides
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
The invention discloses a nickel-containing wastewater treatment method, comprising the following steps: collecting nickel-containing wastewater, and pumping the nickel-containing wastewater into a complex breaking oxidation pool; adding sulfuric acid into the complex breaking oxidation pool until the pH value in the complex breaking oxidation pool is 2.0-2.5; adding ferrous sulfate and hydrogen peroxide into the complex breaking oxidation pool to break a nickel complex to enable the nickel complex to form free nickel; conveying the treated wastewater into a primary reaction sedimentation tank; adding lime into the primary reaction sedimentation tank until the pH value in the primary reaction sedimentation tank is 10.0-10.5; adding a coagulant into the primary reaction sedimentation tank to generate coagulating sedimentation; conveying the treated wastewater into a secondary reaction tank; adding drift ice into a secondary reaction sedimentation tank to remove residual cyanides and other organic complexes in the wastewater by oxidization, regulating the pH value in the secondary reaction sedimentation tank to 10.0-10.5, and precipitating; pumping the wastewater treated in the secondary reaction sedimentation tank into a filtering system; filtering a small amount of mud and a part of suspended solids in the wastewater via the filtering system.
Description
Technical field
The present invention relates to wastewater processing technology, particularly a kind of nickel-containing waste water treatment process and equipment.
Background technology
In the making processes of wiring board, due to the requirement of high precision and compactness, accomplish that the flaggy of wiring board is more and the total thickness of wiring board is thinner, usually metallic nickel is used to carry out phase double replacement as the intermediate medium of Jin Yutong in prior art, therefore, use nickel in turmeric in wiring board making processes and gold-plated process, thus create nickel-containing waste water.But, because nickel is first kinds of pollution matter, its emission standard requires tighter than the emission standard of other heavy metal, therefore, need the good nickel-containing waste water treatment process of a kind for the treatment of effect badly so that wiring board manufacturing enterprise and other manufacturing enterprise can reach emission standard by after nickel-containing waste water process.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of reason effect good nickel-containing waste water treatment process.
The present invention is achieved in that provides a kind of nickel-containing waste water treatment process, comprising:
Nickel-containing waste water collecting tank is utilized to collect nickel-containing waste water and nickel-containing waste water is pumped into contact break oxidation pond;
Sulfuric acid is added until the pH value in described contact break oxidation pond is between 2.0-2.5 in described contact break oxidation pond; Then, in described contact break oxidation pond, add the complex compound that nickel abolished by ferrous sulfate and hydrogen peroxide, the complex compound of nickel is abolished and forms free nickel; And the waste water after process is flowed into first order reaction settling tank;
Lime is added until the pH value in described first order reaction settling tank is between 10.0-10.5 in described first order reaction settling tank; Then, in described first order reaction settling tank, add coagulating agent and make its coagulating sedimentation; Throw out is input into the process of row mud-water separation; Waste water after process is flowed into second order reaction pond;
In described second order reaction settling tank, add drift ice oxidize away prussiate residual in waste water and other organic complex, and the pH value in described second order reaction settling tank is adjusted to redeposition between 10.0-10.5; Throw out in described second order reaction settling tank is carried out mud-water separation process; By the waste water after the process of described second order reaction settling tank and carry out mud-water separation process to described throw out and isolated waste water pumps in filtering system;
Described filtration system filters is utilized to fall from the waste water of described second order reaction settling tank and carry out mud-water separation process to described throw out and a small amount of mud in isolated waste water and partial suspended thing.
Further, the described nickel-containing waste water collecting tank that utilizes is collected nickel-containing waste water and nickel-containing waste water is pumped into contact break oxidation pond and specifically comprise: utilize the liquid level detector in described nickel-containing waste water collecting tank to detect the liquid level of the nickel-containing waste water in described nickel-containing waste water collecting tank; When the liquid level of nickel-containing waste water exceedes preset value, described liquid level detector sends nickel-containing waste water liquid level information to automatic control system; After described automatic control system receives described nickel-containing waste water liquid level information, send operating instruction and make described first lift pump running, to be pumped in described contact break oxidation pond by the nickel-containing waste water in described nickel-containing waste water collecting tank to the first lift pump.
Further, the described nickel-containing waste water collecting tank that utilizes is collected nickel-containing waste water and nickel-containing waste water is pumped into contact break oxidation pond and specifically comprise: utilize the liquid level detector in described nickel-containing waste water collecting tank to detect the liquid level of the nickel-containing waste water in described nickel-containing waste water collecting tank in real time, and detection architecture is sent to automatic control system by nickel-containing waste water liquid level information; After described automatic control system receives described nickel-containing waste water liquid level information, judge whether the liquid level of nickel-containing waste water exceedes preset value; When the liquid level of nickel-containing waste water exceedes preset value, described automatic control system sends operating instruction and makes described first lift pump running, to be pumped in described contact break oxidation pond by the nickel-containing waste water in described nickel-containing waste water collecting tank to the first lift pump.
Further, describedly in described contact break oxidation pond, sulfuric acid is added until the pH value in described contact break oxidation pond specifically comprises between 2.0-2.5: utilize the first dosing pump automatically to add sulfuric acid in described contact break oxidation pond until a PH controller shows pH value in described contact break oxidation pond between 2.0-2.5; Describedly in described contact break oxidation pond, add the complex compound that ferrous sulfate and hydrogen peroxide abolish nickel specifically comprise: utilize the second dosing pump and the 3rd dosing pump respectively to the complex compound adding ferrous sulfate and hydrogen peroxide in described contact break oxidation pond and abolish nickel.
Further, describedly in described first order reaction settling tank, lime is added until the pH value in described first order reaction settling tank specifically comprises between 10.0-10.5: utilize the 4th dosing pump automatically to add lime in described first order reaction settling tank until the 2nd PH controller shows pH value in described first order reaction settling tank between 10.0-10.5; Describedly throw out is input into the process of row mud-water separation and specifically comprises: utilize air film pump that described throw out is delivered into pressure filter, and utilize described pressure filter to carry out mud-water separation process to described throw out, thus mud is transported to predeterminated position and isolated waste water is transported in described filtering system by the second lift pump.
Further, the described drift ice that adds in described second order reaction settling tank to oxidize away in waste water residual prussiate and other organic complex, and the pH value in described second order reaction settling tank is adjusted to redeposition between 10.0-10.5 specifically comprises: utilize the 6th dosing pump in described second order reaction settling tank, add drift ice and oxidize away prussiate residual in waste water and other organic complex; Describedly throw out in described second order reaction settling tank is carried out mud-water separation process specifically comprise: utilize air film pump that described throw out is delivered into pressure filter, and utilize described pressure filter to carry out mud-water separation process to described throw out, thus mud is transported to predeterminated position and isolated waste water is transported in described filtering system by the second lift pump.
Further, describedly described filtration system filters is utilized to fall from the waste water of described second order reaction settling tank and carry out mud-water separation process to described throw out and a small amount of mud in isolated waste water and partial suspended thing comprise further: to utilize backwashing pump to carry out back flushing to the activated carbon filtration tank in described filtering system.
Further, the waste water through described filtering system is flowed into ion exchange column; And utilize described ion exchange column to remove the nickel ion do not precipitated completely.
Further, describedly utilize described ion exchange column to remove the nickel ion do not precipitated completely specifically to comprise: utilize the nickel ion that the ion exchange column Adsorption loading anion exchange resin does not precipitate completely.
Present invention also offers a kind of nickel-containing waste water treatment facility to comprise: nickel waste water collecting tank, the first lift pump, contact break oxidation pond, a PH controller, the first dosing pump, the second dosing pump, the 3rd dosing pump, first order reaction settling tank, the 2nd PH controller, the 4th dosing pump, slender acanthopanax Teat pipette, air film pump, pressure filter, second order reaction settling tank, the 6th dosing pump, the second lift pump and filtering system; Wherein,
Described nickel-containing waste water collecting tank is for collecting nickel-containing waste water;
Described first lift pump is arranged between described nickel-containing waste water collecting tank and described contact break oxidation pond, for pumping in described contact break oxidation pond by the nickel-containing waste water in described nickel-containing waste water collecting tank;
A described PH controller, the first dosing pump, the second dosing pump are connected with described contact break oxidation pond with the 3rd dosing pump; A described PH controller is for showing the information of nickel-containing waste water in described contact break oxidation pond;
Described first dosing pump is used for automatically adding sulfuric acid in described contact break oxidation pond until a described PH controller shows pH value in described contact break oxidation pond between 2.0-2.5;
Described second dosing pump and the 3rd dosing pump are respectively used to add in described contact break oxidation pond the complex compound that nickel abolished by ferrous sulfate and hydrogen peroxide;
Described 2nd PH controller, the 4th dosing pump, slender acanthopanax Teat pipette, air film pump are connected with described first order reaction settling tank with pressure filter; Wherein, described 2nd PH controller is for showing the information of nickel-containing waste water in described first order reaction settling tank;
Described 4th dosing pump is used for automatically adding lime in described first order reaction settling tank until described 2nd PH controller shows pH value in described first order reaction settling tank between 10.0-10.5;
Described slender acanthopanax Teat pipette is used for adding coagulating agent in described first order reaction settling tank;
Described air film pump is used for throw out to deliver into described pressure filter;
Described pressure filter is used for carrying out mud-water separation process to throw out;
Described 6th dosing pump is connected with described second order reaction settling tank; Described 6th dosing pump is used for adding drift ice in described second order reaction settling tank;
Described second lift pump is arranged between described second order reaction settling tank and described filtering system, and is connected with described pressure filter.
Nickel-containing waste water treatment process provided by the invention can remove nickel contained in nickel-containing waste water effectively, makes wiring board manufacturing enterprise and other manufacturing enterprise can reach emission standard by after nickel-containing waste water process.
Accompanying drawing explanation
Fig. 1 is the structural representation of nickel-containing waste water treatment facility in one embodiment of the invention.
Fig. 2 is the schematic flow sheet of nickel-containing waste water treatment process in one embodiment of the invention.
Embodiment
In order to make technical problem to be solved by this invention, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Figure 1 shows that the structural representation of nickel-containing waste water treatment facility 100 in one embodiment of the invention.As shown in Figure 1, nickel-containing waste water treatment facility 100 comprises nickel-containing waste water collecting tank 101, first lift pump 103, contact break oxidation pond 105, PH controller 107, first dosing pump 109, second dosing pump 112, the 3rd dosing pump 114, first order reaction settling tank 115, the 2nd PH controller 116, the 4th dosing pump 117, slender acanthopanax Teat pipette 118, air film pump 119, pressure filter 121, second order reaction settling tank 123, the 6th dosing pump 124, second lift pump 125, filtering system 127, backwashing pump 128, ion exchange column 129 and automatic control system 130.
Particularly, nickel-containing waste water collecting tank 101 is for collecting nickel-containing waste water.Such as, the heavy nickel rinse water in workshop and nickel plating cleaning water flow in nickel-containing waste water collecting tank 101 by pipe special.Wherein, the nickel in nickel-containing waste water exists with two kinds of forms usually: a kind of exist with nickel ion form; Another kind of complex compound form centered by nickel ion exists.In addition, in nickel-containing waste water collecting tank 101, can liquid level detector be set, for detecting the liquid level of the nickel-containing waste water in nickel-containing waste water collecting tank 101.When the liquid level of nickel-containing waste water exceedes preset value, liquid level detector can send nickel-containing waste water liquid level information to automatic control system 130; After automatic control system 130 receives this nickel-containing waste water liquid level information, send operating instruction and to the first lift pump 103, first lift pump 103 is operated.In one embodiment, the liquid level detector in nickel-containing waste water collecting tank 101 can detect the liquid level of the nickel-containing waste water in nickel-containing waste water collecting tank 101 in real time, and detection architecture is sent to automatic control system 130 by nickel-containing waste water liquid level information; After automatic control system 130 receives this nickel-containing waste water liquid level information, judge whether the liquid level of nickel-containing waste water exceedes preset value.When the liquid level of nickel-containing waste water exceedes preset value, automatic control system 130 sends operating instruction and to the first lift pump 103, first lift pump 103 is operated.
First lift pump 103 is arranged between nickel-containing waste water collecting tank 101 and contact break oxidation pond 105, for the nickel-containing waste water in nickel-containing waste water collecting tank 101 is pumped into contact break oxidation pond 105.In one embodiment, after the first lift pump 103 receives the operating instruction of automatic control system 130 transmission, the nickel-containing waste water in nickel-containing waste water collecting tank 101 pumps in contact break oxidation pond 105 by the first lift pump 103 automatically.
One PH controller 107, first dosing pump 109, second dosing pump 112 is connected with contact break oxidation pond 105 with the 3rd dosing pump 114.Wherein, a PH controller 107 is for showing the information of nickel-containing waste water in contact break oxidation pond 105 and controlling the running of the first dosing pump 109, second dosing pump 112 and the 3rd dosing pump 114.First dosing pump 109 for automatically adding sulfuric acid in contact break oxidation pond 105 until a PH controller 107 shows pH value in contact break oxidation pond 105 between 2.0-2.5.PH value in contact break oxidation pond 105 is being regulated after between 2.0-2.5, second dosing pump 112 and the 3rd dosing pump 114 operate, be respectively used to add in contact break oxidation pond 105 complex compound that nickel abolished by ferrous sulfate and hydrogen peroxide, the complex compound of nickel abolished and forms free nickel.In one embodiment, the first dosing pump 109, second dosing pump 112 and the 3rd dosing pump 114 can operate under the control of a PH controller 107; In other embodiments, PH controller 107, first dosing pump 109, second dosing pump 112 and the 3rd dosing pump 114 also can operate under the control of automatic control system 130.
Nickel-containing waste water precipitates by entering first order reaction settling tank 115 after contact break oxidation pond 105.
2nd PH controller 116, the 4th dosing pump 117, slender acanthopanax Teat pipette 118, air film pump 119 are connected with first order reaction settling tank 115 with pressure filter 121.Wherein, the 2nd PH controller 116 is for showing the information of nickel-containing waste water in first order reaction settling tank 115 and controlling the running of the 4th dosing pump 117 and slender acanthopanax Teat pipette 118.4th dosing pump 117 for automatically adding lime in first order reaction settling tank 115 until the 2nd PH controller 116 shows pH value in first order reaction settling tank 115 between 10.0-10.5.Regulated after between 10.0-10.5 by pH value in first order reaction settling tank 115, slender acanthopanax Teat pipette 118 operates, and makes its coagulating sedimentation for adding coagulating agent such as polyacrylamide (PAM) in first order reaction settling tank 115.In the process, lime serves the effect of flocculation, therefore, does not add flocculation agent.In one embodiment, according to actual service condition, flocculation agent can be added in first order reaction settling tank 115.Air film pump 119 is for delivering into pressure filter 121 by throw out.Mud, for carrying out mud-water separation process to throw out, is transported to predeterminated position to give third party process, and is transported in filtering system 127 by the second lift pump 125 by isolated waste water by pressure filter 121.
Nickel-containing waste water is by flowing into second order reaction pond 123 redeposition again after first order reaction settling tank 115.
6th dosing pump 124, air film pump 119 are connected with second order reaction settling tank 123 with pressure filter 121.6th dosing pump 124 oxidizes away prussiate residual in waste water and other organic complex for adding drift ice in second order reaction settling tank 123, and the pH value in second order reaction settling tank 123 is adjusted to redeposition between 10.0-10.5.Air film pump 119 is also for delivering into pressure filter 121 by the throw out in second order reaction settling tank 123.Mud, for carrying out mud-water separation process to throw out, is transported to predeterminated position to give third party process, and is transported in filtering system 127 by the second lift pump 125 by isolated waste water by pressure filter 121.
Second lift pump 125 is arranged between second order reaction settling tank 123 and filtering system 127, and is connected with pressure filter 121, for the waste water in second order reaction settling tank 123 and the isolated waste water of pressure filter 121 being transported in filtering system 127.
Filtering system 127 for filtering out from a small amount of mud in the waste water of second order reaction settling tank 123 and pressure filter 121 and partial suspended thing, to guarantee discharged wastewater met the national standard.In one embodiment, filtering system 127 comprises two sandfiltration pots and an activated carbon filtration tank.Sandfiltration pot can be used alternatingly.Activated carbon filtration tank carries out back flushing by backwashing pump 128 after using for some time.
Waste water through filtering system 127 flows into ion exchange column 129.
Can anion exchange resin be loaded in ion exchange column 129, for the nickel ion that Adsorption does not precipitate completely, thus guarantee discharged wastewater met the national standard further.
Automatic control system 130 controls related elements as dosing pump, PH controller etc. by wired or wireless mode.
Above-mentioned is the concrete structure of nickel-containing waste water treatment facility 100 in one embodiment of the invention, the following describes in another embodiment of the present invention the method adopting above-mentioned nickel-containing waste water treatment facility 100 pairs of nickel-containing waste waters to process.
Fig. 2 is the schematic flow sheet of nickel-containing waste water treatment process in one embodiment of the invention.As shown in Figure 2, nickel-containing waste water treatment process comprises:
Step 201: utilize nickel-containing waste water collecting tank 101 to collect nickel-containing waste water, and nickel-containing waste water is pumped into contact break oxidation pond 105;
Step 202: automatically add sulfuric acid until the pH value in contact break oxidation pond 105 is between 2.0-2.5 in contact break oxidation pond 105; Then, in contact break oxidation pond 105, add the complex compound that nickel abolished by ferrous sulfate and hydrogen peroxide, the complex compound of nickel is abolished and forms free nickel; And the waste water after process is flowed into first order reaction settling tank 115;
Step 203: automatically add lime until the pH value in first order reaction settling tank 115 is between 10.0-10.5 in first order reaction settling tank 115; Then, in first order reaction settling tank 115, add coagulating agent and make its coagulating sedimentation; Throw out is input into the process of row mud-water separation; Waste water after process is flowed into second order reaction pond 123;
Step 204: add drift ice and oxidize away prussiate residual in waste water and other organic complex in second order reaction settling tank 123, and the pH value in second order reaction settling tank 123 is adjusted to redeposition between 10.0-10.5; Throw out in second order reaction settling tank 123 is carried out mud-water separation process; By the waste water after second order reaction settling tank 123 processes and carry out mud-water separation process to throw out and isolated waste water pumps in filtering system 127;
Step 205: utilize filtering system 127 filter out from the waste water of second order reaction settling tank 123 and carry out mud-water separation process to throw out and a small amount of mud in isolated waste water and partial suspended thing, to guarantee discharged wastewater met the national standard; Waste water through filtering system 127 is flowed into ion exchange column 129;
Step 206: utilize ion exchange column to remove the nickel ion do not precipitated completely, thus guarantee discharged wastewater met the national standard further.
Wherein, in step 201, the heavy nickel rinse water in workshop and nickel plating cleaning water flow in nickel-containing waste water collecting tank 101 by pipe special.
In addition, step 201 can comprise further: utilize the liquid level detector in nickel-containing waste water collecting tank 101 to detect the liquid level of the nickel-containing waste water in nickel-containing waste water collecting tank 101; When the liquid level of nickel-containing waste water exceedes preset value, liquid level detector sends nickel-containing waste water liquid level information to automatic control system 130; After automatic control system 130 receives this nickel-containing waste water liquid level information, send operating instruction and the first lift pump 103 is operated, to be pumped in contact break oxidation pond 105 by the nickel-containing waste water in nickel-containing waste water collecting tank 101 to the first lift pump 103.
In addition, in one embodiment, step 201 can comprise further: utilize the liquid level detector in nickel-containing waste water collecting tank 101 to detect the liquid level of the nickel-containing waste water in nickel-containing waste water collecting tank 101 in real time, and detection architecture is sent to automatic control system 130 by nickel-containing waste water liquid level information; After automatic control system 130 receives this nickel-containing waste water liquid level information, judge whether the liquid level of nickel-containing waste water exceedes preset value; When the liquid level of nickel-containing waste water exceedes preset value, automatic control system 130 sends operating instruction and the first lift pump 103 is operated, to be pumped in contact break oxidation pond 105 by the nickel-containing waste water in nickel-containing waste water collecting tank 101 to the first lift pump 103.
Step 202 can specifically comprise: utilize the first dosing pump 109 automatically to add sulfuric acid in contact break oxidation pond 105 until a PH controller 107 shows pH value in contact break oxidation pond 105 between 2.0-2.5; Then, utilize the second dosing pump 112 and the 3rd dosing pump 114 respectively to the complex compound adding ferrous sulfate and hydrogen peroxide in contact break oxidation pond 105 and abolish nickel, the complex compound of nickel is abolished and forms free nickel.
Step 203 can specifically comprise: utilize the 4th dosing pump 117 automatically to add lime in first order reaction settling tank 115 until the 2nd PH controller 116 shows pH value in first order reaction settling tank 115 between 10.0-10.5; Then, in first order reaction settling tank 115, add coagulating agent such as polyacrylamide (PAM) make its coagulating sedimentation; And utilize air film pump 119 that throw out is delivered into pressure filter 121, pressure filter 121 pairs of throw outs are utilized to carry out mud-water separation process afterwards, thus mud is transported to predeterminated position to give third party process, and isolated waste water is transported in filtering system 127 by the second lift pump 125.
Step 204 can specifically comprise: utilize the 6th dosing pump 124 in second order reaction settling tank 123, add drift ice and oxidize away prussiate residual in waste water and other organic complex, and the pH value in second order reaction settling tank 123 is adjusted to redeposition between 10.0-10.5; Utilize air film pump 119 that the throw out in second order reaction settling tank 123 is delivered into pressure filter 121, and utilize pressure filter 121 pairs of throw outs to carry out mud-water separation process, thus mud is transported to predeterminated position to give third party process, and isolated waste water is transported in filtering system 127 by the second lift pump 125.
Step 205 can comprise further: utilize the activated carbon filtration tank in backwashing pump 128 pairs of filtering systems 127 to carry out back flushing.
Step 206 can specifically comprise: utilize the nickel ion that ion exchange column 129 Adsorption loading anion exchange resin does not precipitate completely.
Above-mentioned nickel-containing waste water treatment facility 100 and nickel-containing waste water treatment process can remove nickel contained in nickel-containing waste water effectively, make wiring board manufacturing enterprise and other manufacturing enterprise can reach emission standard by after nickel-containing waste water process.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (16)
1. a nickel-containing waste water treatment process, comprising:
Nickel-containing waste water collecting tank is utilized to collect nickel-containing waste water and nickel-containing waste water is pumped into contact break oxidation pond;
Sulfuric acid is added until the pH value in described contact break oxidation pond is between 2.0-2.5 in described contact break oxidation pond; Then, in described contact break oxidation pond, add the complex compound that nickel abolished by ferrous sulfate and hydrogen peroxide, the complex compound of nickel is abolished and forms free nickel; And the waste water after process is flowed into first order reaction settling tank;
Lime is added until the pH value in described first order reaction settling tank is between 10.0-10.5 in described first order reaction settling tank; Then, in described first order reaction settling tank, add coagulating agent and make its coagulating sedimentation; Throw out is input into the process of row mud-water separation; Waste water after process is flowed into second order reaction pond;
In described second order reaction settling tank, add drift ice oxidize away prussiate residual in waste water and other organic complex, and the pH value in described second order reaction settling tank is adjusted to redeposition between 10.0-10.5; Throw out in described second order reaction settling tank is carried out mud-water separation process; By the waste water after the process of described second order reaction settling tank and carry out mud-water separation process to described throw out and isolated waste water pumps in filtering system;
Described filtration system filters is utilized to fall from the waste water of described second order reaction settling tank and carry out mud-water separation process to described throw out and a small amount of mud in isolated waste water and partial suspended thing.
2. method according to claim 1, is characterized in that, the described nickel-containing waste water collecting tank that utilizes is collected nickel-containing waste water and nickel-containing waste water pumped into contact break oxidation pond and specifically comprise:
The liquid level detector in described nickel-containing waste water collecting tank is utilized to detect the liquid level of the nickel-containing waste water in described nickel-containing waste water collecting tank; When the liquid level of nickel-containing waste water exceedes preset value, described liquid level detector sends nickel-containing waste water liquid level information to automatic control system; After described automatic control system receives described nickel-containing waste water liquid level information, send operating instruction and make described first lift pump running, to be pumped in described contact break oxidation pond by the nickel-containing waste water in described nickel-containing waste water collecting tank to the first lift pump.
3. method according to claim 1, is characterized in that, the described nickel-containing waste water collecting tank that utilizes is collected nickel-containing waste water and nickel-containing waste water pumped into contact break oxidation pond and specifically comprise:
Utilize the liquid level detector in described nickel-containing waste water collecting tank to detect the liquid level of the nickel-containing waste water in described nickel-containing waste water collecting tank in real time, and detection architecture is sent to automatic control system by nickel-containing waste water liquid level information; After described automatic control system receives described nickel-containing waste water liquid level information, judge whether the liquid level of nickel-containing waste water exceedes preset value; When the liquid level of nickel-containing waste water exceedes preset value, described automatic control system sends operating instruction and makes described first lift pump running, to be pumped in described contact break oxidation pond by the nickel-containing waste water in described nickel-containing waste water collecting tank to the first lift pump.
4. method according to claim 1, it is characterized in that, describedly in described contact break oxidation pond, add sulfuric acid until the pH value in described contact break oxidation pond specifically comprises between 2.0-2.5: utilize the first dosing pump automatically to add sulfuric acid in described contact break oxidation pond until a PH controller shows pH value in described contact break oxidation pond between 2.0-2.5;
Describedly in described contact break oxidation pond, add the complex compound that ferrous sulfate and hydrogen peroxide abolish nickel specifically comprise: utilize the second dosing pump and the 3rd dosing pump respectively to the complex compound adding ferrous sulfate and hydrogen peroxide in described contact break oxidation pond and abolish nickel.
5. method according to claim 1, it is characterized in that, describedly in described first order reaction settling tank, add lime until the pH value in described first order reaction settling tank specifically comprises between 10.0-10.5: utilize the 4th dosing pump automatically to add lime in described first order reaction settling tank until the 2nd PH controller shows pH value in described first order reaction settling tank between 10.0-10.5;
Describedly throw out is input into the process of row mud-water separation and specifically comprises: utilize air film pump that described throw out is delivered into pressure filter, and utilize described pressure filter to carry out mud-water separation process to described throw out, thus mud is transported to predeterminated position and isolated waste water is transported in described filtering system by the second lift pump.
6. method according to claim 1, it is characterized in that, the described drift ice that adds in described second order reaction settling tank to oxidize away in waste water residual prussiate and other organic complex, and the pH value in described second order reaction settling tank is adjusted to redeposition between 10.0-10.5 specifically comprises: utilize the 6th dosing pump in described second order reaction settling tank, add drift ice and oxidize away prussiate residual in waste water and other organic complex;
Describedly throw out in described second order reaction settling tank is carried out mud-water separation process specifically comprise: utilize air film pump that described throw out is delivered into pressure filter, and utilize described pressure filter to carry out mud-water separation process to described throw out, thus mud is transported to predeterminated position and isolated waste water is transported in described filtering system by the second lift pump.
7. method according to claim 1, it is characterized in that, describedly utilize described filtration system filters fall from the waste water of described second order reaction settling tank and carry out mud-water separation process to described throw out and a small amount of mud in isolated waste water and partial suspended thing comprise further:
Backwashing pump is utilized to carry out back flushing to the activated carbon filtration tank in described filtering system.
8. according to the method in claim 1 to 7 described in any one, also comprise: the waste water through described filtering system is flowed into ion exchange column; And utilize described ion exchange column to remove the nickel ion do not precipitated completely.
9. method according to claim 8, is characterized in that, describedly utilizes described ion exchange column to remove the nickel ion do not precipitated completely specifically to comprise:
Utilize the nickel ion that the ion exchange column Adsorption loading anion exchange resin does not precipitate completely.
10. a nickel-containing waste water treatment facility, it is characterized in that, comprising: nickel waste water collecting tank, the first lift pump, contact break oxidation pond, a PH controller, the first dosing pump, the second dosing pump, the 3rd dosing pump, first order reaction settling tank, the 2nd PH controller, the 4th dosing pump, slender acanthopanax Teat pipette, air film pump, pressure filter, second order reaction settling tank, the 6th dosing pump, the second lift pump and filtering system; Wherein,
Described nickel-containing waste water collecting tank is for collecting nickel-containing waste water;
Described first lift pump is arranged between described nickel-containing waste water collecting tank and described contact break oxidation pond, for pumping in described contact break oxidation pond by the nickel-containing waste water in described nickel-containing waste water collecting tank;
A described PH controller, the first dosing pump, the second dosing pump are connected with described contact break oxidation pond with the 3rd dosing pump; A described PH controller is for showing the information of nickel-containing waste water in described contact break oxidation pond;
Described first dosing pump is used for automatically adding sulfuric acid in described contact break oxidation pond until a described PH controller shows pH value in described contact break oxidation pond between 2.0-2.5;
Described second dosing pump and the 3rd dosing pump are respectively used to add in described contact break oxidation pond the complex compound that nickel abolished by ferrous sulfate and hydrogen peroxide;
Described 2nd PH controller, the 4th dosing pump, slender acanthopanax Teat pipette, air film pump are connected with described first order reaction settling tank with pressure filter; Wherein, described 2nd PH controller is for showing the information of nickel-containing waste water in described first order reaction settling tank;
Described 4th dosing pump is used for automatically adding lime in described first order reaction settling tank until described 2nd PH controller shows pH value in described first order reaction settling tank between 10.0-10.5;
Described slender acanthopanax Teat pipette is used for adding coagulating agent in described first order reaction settling tank;
Described air film pump is used for throw out to deliver into described pressure filter;
Described pressure filter is used for carrying out mud-water separation process to throw out;
Described 6th dosing pump is connected with described second order reaction settling tank; Described 6th dosing pump is used for adding drift ice in described second order reaction settling tank;
Described second lift pump is arranged between described second order reaction settling tank and described filtering system, and is connected with described pressure filter.
11. equipment according to claim 10, is characterized in that, arrange liquid level detector in described nickel-containing waste water collecting tank.
12. equipment according to claim 10, is characterized in that, described air film pump is also connected with described second order reaction settling tank.
13. equipment according to claim 10, is characterized in that, described filtering system comprises sandfiltration pot and activated carbon filtration tank.
14. equipment according to claim 10, is characterized in that, described filtering system also comprises backwashing pump.
15. equipment according to claim 10, also comprise ion exchange column; Described ion exchange column is connected with described filtering system.
16. equipment according to claim 15, is characterized in that, load anion exchange resin in described ion exchange column.
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| CN201410767488.0A CN104528987A (en) | 2014-12-12 | 2014-12-12 | Nickel-containing wastewater treatment method and equipment |
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| CN104909490A (en) * | 2015-05-19 | 2015-09-16 | 东风活塞轴瓦有限公司 | Phosphating and chemical nickel-plating mixed comprehensive wastewater treatment process and automated device |
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| CN105948316A (en) * | 2016-05-30 | 2016-09-21 | 无锡昊瑜节能环保设备有限公司 | Sewage treatment system for circuit board production plant |
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| CN106966525A (en) * | 2017-04-29 | 2017-07-21 | 安徽中环环保科技股份有限公司 | Integrated nickel-contained wastewater treatment device |
| CN107055876A (en) * | 2017-06-01 | 2017-08-18 | 苏州天瑞环境科技有限公司 | The processing system and processing method of a kind of nickel-containing waste water |
| CN107188326A (en) * | 2016-03-14 | 2017-09-22 | 深圳前海中盛环保科技有限公司 | A kind of method that hydrogen peroxide oxidation adsorbs combined treatment chemical nickle-plating wastewater with ion exchange |
| CN108083506A (en) * | 2017-12-29 | 2018-05-29 | 赣州龙源环保产业经营管理有限公司 | A kind of electronic processing device and processing method of nickeliferous waste liquid |
| CN108249613A (en) * | 2016-12-29 | 2018-07-06 | 南京源泉环保科技股份有限公司 | A kind of alkaline zinc-nickel alloy wastewater treatment method |
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| CN108911229A (en) * | 2018-06-02 | 2018-11-30 | 南通盛州电子科技有限公司 | A kind of cupro-nickel electroplating effluent recovery of circulatory system and recovery method |
| CN110759511A (en) * | 2018-07-27 | 2020-02-07 | 广州超邦化工有限公司 | Treatment method of gun black tin-nickel alloy electroplating wastewater |
| CN110143698A (en) * | 2019-06-14 | 2019-08-20 | 乐清市荣禹污水处理有限公司 | A kind of electroplating sewerage processing method |
| CN112661359A (en) * | 2020-12-29 | 2021-04-16 | 宁波纬诚科技股份有限公司 | System and method for breaking and oxidizing chemical nickel plating residual liquid of vehicle parts |
| CN114644422A (en) * | 2022-04-07 | 2022-06-21 | 湖北鑫嘉鸿诚环保科技有限公司 | Electroplating wastewater precise treatment system for quality-divided treatment according to characteristics of electroplating wastewater |
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