CN105439326A - Treatment method of chemical nickel-plating wastewater - Google Patents
Treatment method of chemical nickel-plating wastewater Download PDFInfo
- Publication number
- CN105439326A CN105439326A CN201511000857.4A CN201511000857A CN105439326A CN 105439326 A CN105439326 A CN 105439326A CN 201511000857 A CN201511000857 A CN 201511000857A CN 105439326 A CN105439326 A CN 105439326A
- Authority
- CN
- China
- Prior art keywords
- plating wastewater
- wastewater
- nickel
- heavy metal
- chemical nickle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention relates to a treatment method of chemical nickel-plating wastewater and belongs to the field of wastewater treatment. The treatment method comprises the following steps: adjusting the pH of the wastewater to be 9-9.5 through an alkaline solution; adding a flocculating agent and destabilizing colloidal metal hydroxide particles including fine fine nickel hydroxide and the like in water to form relatively large particles easy to precipitate, so as to obtain a mixed solution; discharging the mixed solution into an inclined tube sedimentation basin and removing sediment under the action of gravity to obtain supernatant liquid; adding a heavy metal ion capturing agent to form chelate sediment with nickel ions in the chemical nickel-plating wastewater; and further removing tiny suspension matters through a mechanical filter and an ultrafiltration system so that the chemical nickel-plating wastewater can meet national discharge standards.
Description
Technical field
The present invention relates to a kind for the treatment of process of chemical nickle-plating wastewater, belong to field of waste water treatment.
Background technology
The plating solution of chemical nickel plating is generally main salt with single nickel salt, nickelous acetate etc., and hypophosphite, sodium borohydride, borine, hydrazine etc. are reductive agent, then add various auxiliary agent.Operation is carried out in acidic solution at 90 DEG C or the neutral solution close to normal temperature, basic solution.The large class of chemical plating nickel-phosphorus, chemical nickel plating-boron two is divided into use the difference of reductive agent.Coating homogeneity, solidity to corrosion, hardness, weldability, magnetic, ornamental on all demonstrate superiority.But containing complex ni-ion in chemical nickle-plating wastewater, chemical precipitation method is difficult to remove, and brings larger environmental protection pressure to enterprise.
Domesticly two steps can be divided into carry out for complexing heavy metal method of wastewater treatment: first to remove heavy metal in waste water element, after eliminating the interference such as heavy metal, the biodegradability of waste water increases, the biological method such as activated sludge process or biomembrance process just can be utilized to process pollutent in waste water, organic substance in degrading waste water further.But in time containing heavy metal complex (complex copper, complexing town) in waste water, heavy metal ion is just difficult to removing.So when the heavy metal wastewater thereby containing metal complex material, pre-treatment measure will be carried out to waste water, the removal carrying out free heavy metal ion in waste water again after contact break is closed be separated.
In the method process choice of process complexing heavy metal waste water, first should compare analysis to the strengths and weaknesses of various physical chemistry treatment process, adopt the combination treatment of several technique if desired; Sometimes for reaching the provisions of laws and regulations of the energy-saving and emission-reduction of national regulation, heavy metal ion is recycled, the secondary of heavy metal sewage sludge reclaims use again, also to develop best treatment process and repeat recovery scheme, minimizing precipitating sludge and sewage cause secondary pollution again to natural biology circle, reach the energy-saving and emission-reduction object that state's laws specify.
Conventional heavy metal treatment process has hydroxide precipitation method, sulphide precipitation:
Hydroxide precipitation method is when processing nickel-containing waste water, still can effectively remove the nickel ion that plating produces, but for complex ni-ion, complexing agent is relative with the material that nickel ion chelating is formed very stable, suppress the sedimentary generation of metallic hydrogen nickel oxide, the effect of precipitation of hydroxide is poor, needs first to carry out abolishing of complex compound, technique need increase multiple control link, a lot of problem can be run into when the effluent treatment plant application of reality.
Sulphide precipitation is compared with oxygen oxide precipitation method, the solubility product of heavy metal sulfide in water is than oxyhydroxide lower of heavy metal, and the pH value that precipitation is formed is only just passable about 8, regulate the pH value of waste water very easy to operate, can not consume a large amount of alkali lye, processed waste water can be discharged and be made pH value more neutral without the need to acid adding again.But sulphide precipitation has its inevitable defect: the particle of (1) nickel sulphide precipitation is very tiny, due to the impact of other ions and foreign gas in solution, it easily forms colloid, is difficult to precipitation and removes; (2) nickelous sulfide mud is unstable, also can decompose in acid condition, is that sludge disintegration produces secondary pollution; (3) add sodium salt sulfide in waste water, certainly have a little residual residue, these sulfide run into acidic conditions and very easily generate very smelly H
2s gas contamination air.
Chelate precipitation process has advantage and the technology of oneself uniqueness especially containing the waste water of heavy metal ion for the heavy metal containing wastewater treatment of organic complex, but this method still has some shortcomings: as synthetic resins, inner complex, polymkeric substance condition is more just carved, the material needed is not cheap and easy to get, the principle more complicated removed, second stage employ rate is lower.But simple to operate, do not disturb by other factors.
Summary of the invention
The object of the invention is the practical problems in the nickel-containing waste water process in order to solve chemical nickel plating generation, chemical precipitation method and ion capture are organically combined, namely the efficient removal of nickel ion is reached, decrease again the consumption of sequestrant and heavy metal ion trapping agent to greatest extent, and original treatment facility condition can be made full use of, carry out effective removal that simple technological transformation can realize complexing nickel.
The object of the invention is to be achieved through the following technical solutions.
A treatment process for chemical nickle-plating wastewater, concrete steps are as follows:
Step one, regulate the pH of waste water to be 9-9.5 by basic solution, now most of heavy metal ion forms precipitation of hydroxide, and throw out forms colloidal solid in water; Add flocculation agent again, the metal hydroxide particles such as the tiny nickel hydroxide in colloidal in water can be taken off the larger macrobead being easy to precipitate of steady formation, obtain mixing solutions;
Step 2, step one gained mixing solutions drained in tube settler and removes precipitation under gravity, obtain supernatant liquid;
Step 3, in the supernatant liquid of step 2 gained, add heavy metal ion trapping agent, addition volume ratio is 1:5000-1:10000.Form inner complex with the nickel ion in chemical nickle-plating wastewater to precipitate; Remove small suspended substance further through mechanical filter and ultrafiltration system, namely chemical nickle-plating wastewater can meet discharging standards.
Flocculation agent described in step one adopts poly-ferric chloride or bodied ferric sulfate; When playing flocculating effect, iron ion can be formed coprecipitated with nickel ion and other heavy metal ion, and the removal of heavy metal ion helps out, and compares Al-based coagulant and can promote removal effect.
Mechanical filter filtering velocity 8-10m/h described in step 3.
Ultrafiltration system described in step 3 adopts pvdf ultra-filtration membrane.
Beneficial effect
1, the treatment process of a kind of chemical nickle-plating wastewater of the present invention, chemical precipitation method and ion capture are organically combined, namely the efficient removal of nickel ion is reached, decrease again the consumption of sequestrant and heavy metal ion trapping agent to greatest extent, and original treatment facility condition can be made full use of, carry out effective removal that simple technological transformation can realize complexing nickel.
2, the maximum feature of present method is reduction of the dosage of trapping agent, reduces the processing cost of chemical nickle-plating wastewater, and the chelating particle formed because of nickel ion is little, not easily forms throw out, increases ultrafiltration technology remove fine particle thing in water in rear end.Thoroughly solve the process problem up to standard of chemical nickle-plating wastewater.
Accompanying drawing explanation
Fig. 1 is present invention process schema.
Embodiment
Below in conjunction with drawings and Examples, content of the present invention is further described:
Embodiment 1
A treatment process for chemical nickle-plating wastewater, concrete steps are as follows:
Chemical nickle-plating wastewater is drained into pH regulator pond through pipeline, the water quality and quantity of balanced workshop draining, adds sodium hydroxide and regulates between wastewater pH to 9-9.5, then flow into coagulation basin; Count by online PH meter, ORP the add-on controlling medicament in reaction process.After pH regulator to 9-9.0, most of heavy metal ion forms precipitation of hydroxide, and throw out forms colloidal solid in water;
The poly-ferric chloride adding 10-30mg/L in coagulation basin the metal hydroxide particles such as the tiny nickel hydroxide in colloidal in water are taken off steady formed larger be easy to the macrobead precipitated after, in tube settler, precipitate removal under gravity.
Waste water enters tube settler after coagulation basin fully reacts, after precipitation 2h carries out mud-water separation, supernatant liquor flows into intermediate pool, in intermediate pool, add the heavy metal ion trapping agent of volume ratio 1:10000, reaction 1h, the nickel ion in heavy metal ion trapping agent and chemical nickle-plating wastewater forms inner complex and precipitates, both achieve the process up to standard of nickel ion, take full advantage of again the advantage of chemical precipitation method low cost.
After chemical reaction and coagulating sedimentation, the nickel ion in water is about 1-3mg/L, and nickel ion concentration is low, heavy metal ion trapping agent consumption used is few, reduce use cost, the inner complex concentration simultaneously formed is low, not easily forms precipitation, if again by the common precipitator method, poor removal effect, the sedimentation time of needs is long, and the laid down cost of settling tank is large, therefore adopt mechanical filter and ultrafiltration system to remove small suspended substance further in rear end, the wastewater to reach standard after filtration is arranged outward.
After mechanical filter and ultrafiltration system run for some time, some mud can be accumulated in inside, thus affect outlet effect, therefore should regularly recoil, recoil water outlet enters settling tank and precipitates, and the mud that tube settler precipitates also regularly enters sludge thickener.Mud in sludge sump is squeezed into chamber-type press filter by underflow pump and is carried out processed, and filtrate returns sludge thickener, and the dewatered sludge water ratio be press-filtered out is less than 80%, can pack collection.According to National Hazard refuse register, such mud belongs to Hazardous wastes.The recovery business with Hazardous wastes process qualification need be handed over to carry out reclaiming or processing.
After ultrafiltration system, stable water outlet is up to standard, can guarantee that the nickel ion degree of depth is less than 0.1mg/L.
Described mechanical filter filtering velocity 8-10m/h.
Described ultrafiltration system adopts pvdf ultra-filtration membrane.
On the basis of existing facility condition, carry out technological transformation according to the thinking of this invention, water pump lifting device has been set in clean water basin, add heavy metal ion throwing device, mechanical filter and ultrafiltration system, after transformation, water outlet Absorbable organic halogens is up to standard, and operational monitoring data are as follows:
Table 1 technological transformation advance effluent quality parameter
The laggard effluent quality parameter of table 2 technological transformation
Claims (5)
1. a treatment process for chemical nickle-plating wastewater, is characterized in that: concrete steps are as follows:
Step one, regulate the pH of waste water to be 9-9.5 by basic solution, now most of heavy metal ion forms precipitation of hydroxide, and throw out forms colloidal solid in water; Add flocculation agent again;
Step 2, step one gained mixing solutions drained in tube settler and removes precipitation under gravity, obtain supernatant liquid;
Step 3, in the supernatant liquid of step 2 gained, add heavy metal ion trapping agent, addition volume ratio is 1:5000-1:10000; Form inner complex with the nickel ion in chemical nickle-plating wastewater to precipitate; Remove small suspended substance further through mechanical filter and ultrafiltration system, namely chemical nickle-plating wastewater can meet discharging standards.
2. the treatment process of a kind of chemical nickle-plating wastewater as claimed in claim 1, is characterized in that: flocculation agent described in step one adopts poly-ferric chloride or bodied ferric sulfate.
3. as claim 1 or as described in a kind for the treatment of process of chemical nickle-plating wastewater, it is characterized in that: the addition of described flocculation agent is 10-30mg/L.
4. the treatment process of a kind of chemical nickle-plating wastewater as claimed in claim 1, is characterized in that: mechanical filter filtering velocity 8-10m/h described in step 3.
5. the treatment process of a kind of chemical nickle-plating wastewater as claimed in claim 1, is characterized in that: ultrafiltration system described in step 3 adopts pvdf ultra-filtration membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000857.4A CN105439326A (en) | 2015-12-28 | 2015-12-28 | Treatment method of chemical nickel-plating wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511000857.4A CN105439326A (en) | 2015-12-28 | 2015-12-28 | Treatment method of chemical nickel-plating wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105439326A true CN105439326A (en) | 2016-03-30 |
Family
ID=55550043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511000857.4A Pending CN105439326A (en) | 2015-12-28 | 2015-12-28 | Treatment method of chemical nickel-plating wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105439326A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906098A (en) * | 2016-06-01 | 2016-08-31 | 湖南大学 | Treatment method for nickel complex containing industrial wastewater |
| CN106115814A (en) * | 2016-08-03 | 2016-11-16 | 许祚员 | A kind of nickel sewage-treating agent and preparation method thereof |
| CN106746141A (en) * | 2016-12-28 | 2017-05-31 | 中广核中科海维科技发展有限公司 | A kind of method that electron irradiation processes industrial wastewater |
| 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 |
| CN107226556A (en) * | 2017-07-25 | 2017-10-03 | 湖南湘牛环保实业有限公司 | A kind of nickeliferous heavy metal containing wastewater treatment of high salt low concentration and reclamation set |
| CN107662984A (en) * | 2016-07-29 | 2018-02-06 | 上海轻工业研究所有限公司 | The processing method of chemical nickle-plating wastewater |
| CN108236926A (en) * | 2017-11-01 | 2018-07-03 | 常州清流环保科技有限公司 | A kind of method that metal composite organic backbone sorbing material is prepared using chemical nickel plating waste solution |
| CN108892295A (en) * | 2018-08-09 | 2018-11-27 | 湖南湘牛环保实业有限公司 | A kind of low concentration heavy metal water membrane treatment process |
| CN110156208A (en) * | 2019-05-21 | 2019-08-23 | 厦门市同利源电气设备有限公司 | The treatment process of rack plating waste water is moved back in a kind of electroplating wastewater |
| CN111573883A (en) * | 2020-04-21 | 2020-08-25 | 生态环境部华南环境科学研究所 | Method for treating chemical nickel plating waste liquid through iron-based catalyst |
| CN113429020A (en) * | 2021-06-29 | 2021-09-24 | 上海应用技术大学 | Method for removing heavy metal ions in acidic wastewater |
| CN114105225A (en) * | 2021-12-09 | 2022-03-01 | 广东光华科技股份有限公司 | Nickel hydroxide and preparation method and application thereof |
| CN116002880A (en) * | 2021-10-19 | 2023-04-25 | 中国石油化工股份有限公司 | Composition with heavy metal precipitation function and method for treating heavy metal wastewater |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803659A (en) * | 2006-01-13 | 2006-07-19 | 江苏金麟环境科技有限公司 | Multi-stage treatment process for electroplating wastewater of centralized park zone |
| CN101549919A (en) * | 2008-03-31 | 2009-10-07 | 邵琳 | Method for treating electroplating integrated waste water |
| JP2014188514A (en) * | 2013-03-28 | 2014-10-06 | Mitsubishi Chemicals Corp | Process for producing purified alkali metal aqueous solution |
-
2015
- 2015-12-28 CN CN201511000857.4A patent/CN105439326A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1803659A (en) * | 2006-01-13 | 2006-07-19 | 江苏金麟环境科技有限公司 | Multi-stage treatment process for electroplating wastewater of centralized park zone |
| CN101549919A (en) * | 2008-03-31 | 2009-10-07 | 邵琳 | Method for treating electroplating integrated waste water |
| JP2014188514A (en) * | 2013-03-28 | 2014-10-06 | Mitsubishi Chemicals Corp | Process for producing purified alkali metal aqueous solution |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906098A (en) * | 2016-06-01 | 2016-08-31 | 湖南大学 | Treatment method for nickel complex containing industrial wastewater |
| CN105906098B (en) * | 2016-06-01 | 2019-04-02 | 湖南大学 | A method of processing industrial wastewater containing nickel complex |
| CN107662984A (en) * | 2016-07-29 | 2018-02-06 | 上海轻工业研究所有限公司 | The processing method of chemical nickle-plating wastewater |
| CN106115814A (en) * | 2016-08-03 | 2016-11-16 | 许祚员 | A kind of nickel sewage-treating agent and preparation method thereof |
| CN106746141B (en) * | 2016-12-28 | 2021-07-30 | 中广核中科海维科技发展有限公司 | Method for treating industrial wastewater by electron irradiation |
| CN106746141A (en) * | 2016-12-28 | 2017-05-31 | 中广核中科海维科技发展有限公司 | A kind of method that electron irradiation processes industrial wastewater |
| 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 |
| CN107226556A (en) * | 2017-07-25 | 2017-10-03 | 湖南湘牛环保实业有限公司 | A kind of nickeliferous heavy metal containing wastewater treatment of high salt low concentration and reclamation set |
| CN108236926A (en) * | 2017-11-01 | 2018-07-03 | 常州清流环保科技有限公司 | A kind of method that metal composite organic backbone sorbing material is prepared using chemical nickel plating waste solution |
| CN108236926B (en) * | 2017-11-01 | 2020-07-24 | 常州清流环保科技有限公司 | Method for preparing metal composite organic framework adsorbing material by using chemical nickel plating waste liquid |
| CN108892295A (en) * | 2018-08-09 | 2018-11-27 | 湖南湘牛环保实业有限公司 | A kind of low concentration heavy metal water membrane treatment process |
| CN110156208A (en) * | 2019-05-21 | 2019-08-23 | 厦门市同利源电气设备有限公司 | The treatment process of rack plating waste water is moved back in a kind of electroplating wastewater |
| CN111573883A (en) * | 2020-04-21 | 2020-08-25 | 生态环境部华南环境科学研究所 | Method for treating chemical nickel plating waste liquid through iron-based catalyst |
| CN111573883B (en) * | 2020-04-21 | 2022-09-13 | 生态环境部华南环境科学研究所 | Method for treating chemical nickel plating waste liquid through iron-based catalyst |
| CN113429020A (en) * | 2021-06-29 | 2021-09-24 | 上海应用技术大学 | Method for removing heavy metal ions in acidic wastewater |
| CN116002880A (en) * | 2021-10-19 | 2023-04-25 | 中国石油化工股份有限公司 | Composition with heavy metal precipitation function and method for treating heavy metal wastewater |
| CN114105225A (en) * | 2021-12-09 | 2022-03-01 | 广东光华科技股份有限公司 | Nickel hydroxide and preparation method and application thereof |
| CN114105225B (en) * | 2021-12-09 | 2024-08-20 | 广东光华科技股份有限公司 | Nickel hydroxide and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105439326A (en) | Treatment method of chemical nickel-plating wastewater | |
| CN102603097B (en) | Advanced treatment and recycling process for wastewater containing heavy metal ions | |
| CN101234828B (en) | Integrated electroplating treatment method for waste water | |
| CN101648757B (en) | Recycling processing method for stainless steel processing process wastewater grading precipitation | |
| CN101648759B (en) | Recycling processing method for wastewater produced by processing stainless steel | |
| CN204824453U (en) | Desulfurization pretreatment of water device that gives up | |
| CN201634531U (en) | Electroplating wastewater diversion treatment standard emission system | |
| CN102417253B (en) | In-depth treatment zero-discharge recovery equipment for heavy metal waste water | |
| CN101734815A (en) | Electronic electroplating wastewater recycling advanced treatment technology | |
| CN202953895U (en) | Electrocoagulation sewage treatment system | |
| CN104291498B (en) | A kind for the treatment of process of chemical nickel plating waste solution containing nitric acid and the treatment system of correspondence | |
| CN103626322A (en) | Double-alkali neutralization treatment method of heavy metal-containing acidic wastewater | |
| CN106517578B (en) | Heavy metal wastewater treatment method for breaking complex by using granular sludge and ceramic membrane | |
| CN104030500B (en) | A kind of Processes and apparatus removing nickel ion in section aluminum waste water | |
| CN204224358U (en) | Stainless-steel cold-rolling acid waste water treatment unit | |
| CN202265468U (en) | Equipment for deeply treating and recovering heavy metal waste water with zero discharge | |
| CN208869412U (en) | The processing system of chromate waste water | |
| CN207468386U (en) | A kind of zero-discharge treatment system of mixed electroplating wastewater | |
| CN105174567A (en) | Heavy metal wastewater treatment and recovery system and method | |
| CN202829734U (en) | Reclaimed water reusing and thick water discharging on standard system | |
| CN108483715A (en) | A kind of processing method of Electroplating Wastewater, nickel | |
| CN101555078A (en) | Method for removing fluorine by using nano-activity zirconium dioxide | |
| CN211896396U (en) | Acidic heavy metal wastewater treatment device | |
| CN208577561U (en) | A kind of mining smelting wastewater exception water quality emergency treatment device | |
| CN210855595U (en) | Treatment facility of circuit board waste water |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160330 |