CN105060578B - It is a kind of to utilize the method for activating Special Casting Iron material process organic wastewater containing cupric ammine complex - Google Patents
It is a kind of to utilize the method for activating Special Casting Iron material process organic wastewater containing cupric ammine complex Download PDFInfo
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Abstract
The invention discloses a kind of using the method for activating Special Casting Iron material process organic wastewater containing cupric ammine complex, belong to chemical wastewater treatment technical field.Its step is as follows:A, between the pH to 2.0 4.0 for adjusting the waste water containing cupric ammine complex;B, activation Special Casting Iron material is added into the organic wastewater containing cupric ammine complex, its dosage is the 0.2 1.5% of wastewater quality, and stirring, the reaction time is 30 120min;C, it is 30% hydrogen peroxide to continue to add mass fraction into step B water outlets after reaction, and dosage is the 0.2 1.5% of wastewater volume, and air stirring, the reaction time is 60 180min;D, it is 30% liquid caustic soda to add mass fraction, and it is 7 10 to be neutralized to pH, after precipitation, Chinese effluent.It realizes effective removal of copper ion in the organic wastewater containing cupric ammine complex, while drastically reduce the area the COD in mother liquor waste waterCr。
Description
Technical field
Patent of the present invention is related to chemical wastewater treatment technical field, and the extraordinary casting of activation is utilized more specifically to one kind
The method of iron material Treatment of Copper ammino-complex organic wastewater.
Background technology
During Production in Chemical Plant Reactive Brilliant Blue KN-R, first by amino oil, bromamine acid in stannous chloride as catalyst
In the presence of, carry out condensation reaction, press filtration, after dilute sulfuric acid washing, discharge is a large amount of to remove purple secondary waste water, wherein mainly contain amino oil,
Bromamine acid, copper sulphate, sulfuric acid etc..After testing, waste water CODCrFor 4000mg/L or so, content of copper ion is 2200mg/L or so,
Cu in waste water ion concentration is higher, if not handling, directly discharge certainly will be to environmental pollution.When remaining largely in human body
After copper heavy metal, easily the internal organs in body are caused to bear, particularly liver and courage, cause human metabolism disorderly, liver
Hardening, liver ascites are even even more serious;And have larger toxicity to microorganism in biochemical system, influence the normal fortune of biochemical system
OK.
The method of Treatment of Copper waste water has chemical precipitation method, absorption method, ion-exchange etc. at present.For general inorganic
Waste water, alkali neutralization can effectively remove the copper ion in waste water, if but there are amino-compound, such as bromamine acid in waste water, then
A large amount of cupric ammine complexs can be formed with copper ion, simple alkali neutralization is difficult to achieve the purpose that copper removal.And absorption method, ion are handed over
The problem of rule faces adsorbent, ion exchange resin regeneration is changed, has preferable adsorption effect for low concentration, but there are two
The risk of secondary pollution.
Chinese invention patent, publication number:CN 103288184A, publication date:On September 11st, 2013, discloses a kind of utilization
The method of iron-carbon micro-electrolysis technical finesse copper-containing wastewater, the invention mixed according to a certain percentage with carbon dust just with iron powder to containing
Copper waste water carries out light electrolysis, its copper ion removal rate is up to more than 94%.It is disadvantageous in that, iron simple substance used in this method and
Carbon particle mixes, it is smaller with the contact area of waste water, and composition primary battery quantity is few, so as to influence the removal efficiency of its copper, separately
This outer method is mainly for the removal of free copper, rather than the removal of complex copper.
Chinese invention patent, publication number:CN103466770A, publication date:On December 25th, 2013, disclose a kind of cuprammonium
Wastewater treatment method is complexed, this method is using the copper ammonia complexation waste water in MVP methods processing waste water, first by adding magnesium salts, phosphorus
Salt precipitates ammonia, achievees the purpose that to destroy cupric ammine complex, afterwards using the ammonia in alkali collection ammonium phosphate magnesium salts, and after progress accordingly
Continuous processing, its shortcoming are that this method is complex, and need to add a large amount of medicaments, and operation requires more stringent.
The content of the invention
1st, technical problems to be solved by the inivention
For in the prior art without the problem of the effective ways of cupric ammine complex, the present invention proposes in removal organic wastewater
It is a kind of to utilize the method for activating Special Casting Iron material process organic wastewater containing cupric ammine complex.It can be handled containing amino
Copper ion in organic wastewater, copper ion removal rate reach 99.9%, meet《Integrated wastewater discharge standard》It is total in GB8978-1996
Copper three-level discharge standard, while useless water part COD can also be removedCr。
2nd, technical solution
To reach above-mentioned purpose, technical solution provided by the invention is:
It is a kind of to utilize the method for activating Special Casting Iron material process organic wastewater containing cupric ammine complex, include the following steps:
A, the pH of the organic wastewater containing cupric ammine complex is adjusted first between 2.0-4.0;
B, activation Special Casting Iron material is added into the organic wastewater containing cupric ammine complex, its dosage is wastewater quality
0.2-1.5%, stirring, reaction time 30-120min;
C, it is 30% hydrogen peroxide to continue to add mass fraction into step B water outlets after reaction, and dosage is waste water
The 0.2-1.5% of volume, air stirring, reaction time 60-180min;
D, step C after reaction, adds liquid caustic soda, and it is 7-10 to be neutralized to pH, after precipitation, Chinese effluent.Water outlet after processing
Middle copper concentration meets《Integrated wastewater discharge standard》The three-level discharge standard of GB 8978-1996.
Preferably, in step A, the acid that adjusts the pH of organic wastewater containing cupric ammine complex be mass fraction be 98% concentrated sulfuric acid or
Mass fraction is 37% concentrated hydrochloric acid, and the pH of waste water is adjusted between 2.5-3.5, and acidizing effect is optimal, subsequent activation Special Casting Iron material
Expect that the small primary battery quantity of generation is most, effectively improve its broken ring ability to cupric ammine complex, improve it and destroy speed.
Preferably, the activation Special Casting Iron material described in step B is graininess, and particle diameter is 30-100 mesh, the quality of iron
Number:55-60, the mass fraction of carbon:25-30, the mass fraction of copper:10-15.The main iron content of cast iron powder, carbon, copper, in acidity
Under the conditions of, several small primary batteries, including iron/carbon micro cell can be formed, forms a variety of electrochemical reactions, what anode was discharged
Free electron destroys the cupric ammine complex in waste water, discharges copper ion, and activation Special Casting Iron material granule is smaller, therefore can be with
Waste water has large contact area, is more advantageous to destroying organic complex steel structure.
Preferably, the 0.5-1%, mixing speed 60- that Special Casting Iron material dosage is waste water weight are activated in step B
Between 100rpm, reaction time 60-90min, on this condition, the destruction speed of Cu in waste water ammino-complex reach highest,
And activation Special Casting Iron material utilization amount is minimum, it is ensured that optimal treatment effect, the financial cost used are minimum.
Preferably, the hydrogen peroxide dosage in step C is the 0.5-1% of wastewater volume, can obtain optimal processing effect
Fruit.Fenton oxidation, catalysis of the hydrogen peroxide in iron ion and copper ion are carried out to the waste water after step B reactions by adding hydrogen peroxide
The lower more hydroxyl radical free radicals of release, the hydroxyl radical free radical have stronger oxidisability, can further destroy Cu in waste water ammino
Compound, while remove useless water part CODCr, organics removal, this greatly reduces subsequent wastewater treatment difficulty.
Preferably, agitating mode is air stirring in step C, is exposed using the boring aeration pipe assembled in reactor bottom
Air, it is ensured that hydrogen peroxide is sufficiently mixed with waste water, reaction time 90-120min, strengthens Fenton oxidation reaction, in this period
Interior, hydrogen peroxide is under iron ion, the catalytic condition of copper ion, and the quantity of the hydroxyl radical free radical of generation is most, and oxidation susceptibility is most strong,
The destructive rate and COD removal rates of Cu in waste water ammino-complex reach highest, if extending its reaction time again, cupric ammine complex
Destructive rate and CODCrRemoval efficiency will not improve again.
Preferably, the liquid caustic soda in step D is the sodium hydroxide of mass fraction 30%, and it is 8-9 to be neutralized to pH, and copper ion generates
Kocide SD precipitates, and precipitation is complete, eliminates copper ion, while activates the iron ion of Special Casting Iron material release, can generate hydrogen
Ferrous oxide, iron hydroxide flocculation sediment.
The present invention first carries out cell reaction to the organic wastewater containing cupric ammine complex, then carries out Fenton oxidation reaction, handles
Copper concentration meets in water outlet afterwards《Integrated wastewater discharge standard》The three-level discharge standard of GB 8978-1996, process route in water outlet
Short, few using equipment, easy to operate, floor space is small, using intermittently operated, can meet in chemical enterprise on-site construction
The operation characteristic of small sewage treatment plant in current chemical enterprise.
3rd, beneficial effect
Using technical solution provided by the invention, compared with existing known technology, there is following remarkable result:
(1) process route of processing method of the invention is short, and few using equipment, easy to operate, floor space is small, Neng Gou
Chemical enterprise on-site construction, using intermittently operated, meets the operation characteristic of small sewage treatment plant in current chemical enterprise;
(2) present invention carries out Fenton oxidation by adding hydrogen peroxide to the waste water after step B reactions, and hydrogen peroxide is in iron ion
With more hydroxyl radical free radicals are discharged under the catalysis of copper ion, which has stronger oxidisability, can further break
Bad Cu in waste water ammino-complex, while remove useless water part CODCr, organics removal, this greatly reduces subsequent wastewater treatment
Difficulty;
(3) present invention first carries out cell reaction to the organic wastewater containing cupric ammine complex, then carries out Fenton oxidation reaction,
Finally pass through alkali neutralization, Cu in waste water forms Kocide SD precipitation and achievees the purpose that copper, and activation Special Casting Iron material is discharged
The iron ion gone out then forms ferrous hydroxide, iron hydroxide flocculation sediment, reaches copper removal, removes CODCrDual purpose, in liquid caustic soda
It can reach more than 99.9% copper removal rate with precipitation, meet《Integrated wastewater discharge standard》Total copper three-level in GB8978-1996
Discharge standard;
(4) present invention activation Special Casting Iron material is graininess, and particle diameter is 30-100 mesh, the mass fraction 55-60 of iron, carbon
Mass fraction 25-30, the mass fraction 10-15 of copper;The main iron content of cast iron powder, carbon, copper, in acid condition, if can be formed
Dry small primary battery, including iron/carbon micro cell, form a variety of electrochemical reactions, the free electron that anode is discharged destroys useless
Cupric ammine complex in water, discharges copper ion, activation Special Casting Iron material granule is smaller, therefore can have larger contact with waste water
Area, is more advantageous to destroying organic complex steel structure.
Brief description of the drawings
Fig. 1 is the processing technological flow figure of the present invention.
Embodiment
To further appreciate that present disclosure, the present invention is described in detail in conjunction with the accompanying drawings and embodiments.
When producing Reactive Brilliant Blue KN-R, first by amino oil, bromamine acid in the presence of stannous chloride is as catalyst, into
Row condensation reaction, press filtration, after dilute sulfuric acid washing, discharge is a large amount of to remove purple secondary waste water, wherein mainly containing amino oil, bromamine acid, sulphur
Sour copper, sulfuric acid etc., it is organic wastewater to remove purple secondary waste water, and bromamine acid therein, belongs to anthraquinone analog compound, the phenyl ring of molecular structure
In contain amino, easily form cupric ammine complex with the copper ion in waste water, can be to people if not removing cupric ammine complex therein
Living environment damage, to solve this problem, the present invention proposes a kind of using activating Special Casting Iron material process
The method of the organic wastewater containing cupric ammine complex.
Embodiment 1
The cupric that the chemical plant of Zhejiang production Reactive Brilliant Blue KN-R is discharged removes purple secondary waste water.The ginseng of mother liquor waste water used
Number is as follows:10-30 DEG C of water temperature, pH value 3.8, CODCrValue 3931mg/L or so, wherein copper ion 1895mg/L or so.With reference to attached drawing
1, the present embodiment proposes a kind of method for utilizing and activating Special Casting Iron material process organic wastewater containing cupric ammine complex, its step
It is as follows:
It is a kind of to utilize the method for activating Special Casting Iron material process organic wastewater containing cupric ammine complex, include the following steps:
A, the pH to 3.5 of the waste water containing cupric ammine complex is adjusted first;Adjust the acid of the pH of organic wastewater containing cupric ammine complex
It is 37% concentrated hydrochloric acid for mass fraction, acidizing effect is optimal, the small primary battery quantity of subsequent activation Special Casting Iron material generation
At most, its broken ring ability to cupric ammine complex is effectively improved, it is improved and destroys speed.
B, activation Special Casting Iron material is added into the organic wastewater containing cupric ammine complex, its dosage is wastewater quality
0.5%, stirring, reaction time 60min;Activation Special Casting Iron material is graininess, and particle diameter is 30 mesh, the mass fraction of iron:
55, the mass fraction of carbon:25, the mass fraction of copper:10.The main iron content of cast iron powder, carbon, copper, in acid condition, if can be formed
Dry small primary battery, including iron/carbon micro cell, form a variety of electrochemical reactions, the free electron that anode is discharged destroys useless
Cupric ammine complex in water, discharges copper ion, activation Special Casting Iron material granule is smaller, therefore can have larger contact with waste water
Area, is more advantageous to destroying organic complex steel structure, after activation Special Casting Iron material adds, mixing speed 60rpm, at this
Under part, the destruction speed of Cu in waste water ammino-complex reaches highest, and it is minimum to activate Special Casting Iron material utilization amount, it is ensured that optimal
Treatment effect, the financial cost used is minimum.
C, it is 30% hydrogen peroxide to continue to add mass fraction into step B water outlets after reaction, and dosage is waste water
The 0.5% of volume, air stirring, reaction time 90min;Sweet smell is carried out to the waste water after step B reactions by adding hydrogen peroxide
Pausing and aoxidize, hydrogen peroxide discharges more hydroxyl radical free radicals under iron ion catalysis, which has stronger oxidisability,
Cu in waste water ammino-complex can be further destroyed, while removes useless water part CODCr, organics removal, after this is greatly reduced
Continuous wastewater treatment difficulty.Agitating mode is air stirring, it is ensured that hydrogen peroxide and waste water are sufficiently mixed, and the reaction time is
90min, strengthen Fenton oxidation reaction, during this period of time, hydrogen peroxide under iron ion, the catalytic condition of copper ion, generation
The quantity of hydroxyl radical free radical is most, and oxidation susceptibility is most strong, and the destructive rate and COD removal rates of Cu in waste water ammino-complex reach most
Height, if extending its reaction time again, the destructive rate and COD of cupric ammine complexCrRemoval efficiency will not improve again.
D, step C after reaction, adds liquid caustic soda, and it is 8 to be neutralized to pH, after precipitation, Chinese effluent.Copper in water outlet after processing
Concentration meets《Integrated wastewater discharge standard》The three-level discharge standard of GB 8978-1996.Liquid caustic soda is the hydrogen-oxygen of mass fraction 30%
Change sodium, copper ion generation Kocide SD precipitation, precipitation is complete, eliminates copper ion, while activates the release of Special Casting Iron material
Iron ion, can generate ferrous hydroxide, iron hydroxide flocculation sediment.
Copper concentration meets in water outlet after the processing of the present invention《Integrated wastewater discharge standard》The three-level row of GB 8978-1996
Standard is put, the present embodiment removes the treatment effect of purple secondary waste water referring to table 1 to this.
The water outlet of 1 embodiment 1 of table is contrasted with raw water quality index
From data in table 1, the method for the present embodiment can will go the copper ion in purple secondary raw water to be down to from 1895mg/L
0.8mg/L, removal rate 99.91%;Raw water CODCrValue is down to 2556mg/L from 3931mg/L.
The process route of the processing method of the present invention is short, and few using equipment, easy to operate, floor space is small, can change
The on-site construction of work enterprise.Using intermittently operated, meet the operation characteristic of small sewage treatment plant in current chemical enterprise, and from
Table 1 is as can be seen that of the invention while Cu in waste water ion is removed, additionally it is possible to drastically reduce the area in mother liquor waste water
CODCr, this greatly reduces subsequent wastewater treatment difficulty.
Embodiment 2
The cupric discharged for the chemical plant of removal Lianyungang of Jiangsu Production in Chemical Plant Reactive Brilliant Blue KN-R removes purple
Secondary waste water, the present embodiment propose a kind of method for utilizing and activating Special Casting Iron material process organic wastewater containing cupric ammine complex, its
Method and step is the same as embodiment 1.Wherein, use quality fraction adjusts pH to 2.5 for 98% concentrated sulfuric acid in step A, is activated in step B
The dosage of Special Casting Iron material is the 1.0% of wastewater quality, and particle diameter is 100 mesh, the mass fraction 60 of iron, the mass fraction of carbon
30, the mass fraction 15 of copper, mixing speed 100rpm, reaction time 90min, in step C mass fraction be 30% it is double
The dosage of oxygen water is 1.0%, air stirring, and it is 9 that reaction time 120min, step D, which are neutralized to pH, and the present embodiment goes purple pair
The effect before and after the processing of waste water is referring to table 2.
The water outlet of 2 embodiment 2 of table is contrasted with raw water quality index
From data in table 2, the method for the present embodiment can will go the copper ion in purple secondary raw water to be down to from 2235mg/L
1.1mg/L, removal rate 99.95%;Raw water CODCrValue is down to 2150mg/L from 4230mg/L.
Embodiment 3
To remove the complex copper gone in the secondary waste water of purple that Anhui chemical enterprise produces, the present embodiment proposition is a kind of to utilize work
Change the method for Special Casting Iron material process organic wastewater containing cupric ammine complex, its method and step is the same as embodiment 1.Wherein, in step A
Use quality fraction adjusts pH to 4.0 for 98% concentrated sulfuric acid, and the dosage that Special Casting Iron material is activated in step B is wastewater quality
1.5%, particle diameter is 50 mesh, the mass fraction 58 of iron, the mass fraction 27 of carbon, the mass fraction 13 of copper, and mixing speed is
The dosage for the hydrogen peroxide that mass fraction is 30% is 1.5% in 80rpm, reaction time 30min, step C, air stirring,
Reaction time is 180min, and it is 10 that step D, which is neutralized to pH, and the present embodiment goes the effect before and after the processing of purple secondary waste water referring to table 3.
3 embodiment of table, 3 water outlet is contrasted with raw water quality index
From data in table 3, the method for the present embodiment can will go the copper ion in purple secondary raw water to be down to from 3346mg/L
1.5mg/L, removal rate 99.96%;Raw water CODCrValue is down to 3117mg/L from 5468mg/L.
Embodiment 4
To remove the complex copper gone in purple secondary waste water that Yancheng, Jiangsu Province chemical enterprise produces, the present embodiment proposes a kind of profit
With the method for activation Special Casting Iron material process organic wastewater containing cupric ammine complex, its method and step is the same as embodiment 1.Wherein, walk
Use quality fraction adjusts pH to 2.0 for 37% concentrated hydrochloric acid in rapid A, and it is useless that the dosage of Special Casting Iron material is activated in step B
The 0.2% of water quality, particle diameter are 80 mesh, and the mass fraction 59 of iron, the mass fraction 26 of carbon, the mass fraction 12 of copper, stirs speed
Spend for 90rpm, the dosage for the hydrogen peroxide that mass fraction is 30% is 0.2% in reaction time 120min, step C, air
Stirring, reaction time 60min, step D are neutralized to pH as 7, the present embodiment go the effect before and after the processing of purple secondary waste water referring to
Table 4.
4 embodiment of table, 4 water outlet is contrasted with raw water quality index
From data in table 4, the method for the present embodiment can will go the copper ion in purple secondary raw water to be down to from 2567mg/L
0.9mg/L, removal rate 99.96%;Raw water CODCrValue is down to 2143mg/L from 4658mg/L.
Embodiment 5
To remove the complex copper gone in the secondary waste water of purple that Henan chemical enterprise produces, the present embodiment proposition is a kind of to utilize work
Change the method for Special Casting Iron material process organic wastewater containing cupric ammine complex, its method and step is the same as embodiment 1.Wherein, in step A
Use quality fraction adjusts pH to 3.0 for 37% concentrated hydrochloric acid, and the dosage that Special Casting Iron material is activated in step B is wastewater quality
0.8%, particle diameter is 60 mesh, the mass fraction 56 of iron, the mass fraction 29 of carbon, the mass fraction 11 of copper, and mixing speed is
The dosage for the hydrogen peroxide that mass fraction is 30% is 0.8% in 70rpm, reaction time 80min, step C, air stirring,
Reaction time is 100min, and it is 8.5 that step D, which is neutralized to pH, and the present embodiment goes the effect before and after the processing of purple secondary waste water referring to table
4。
5 embodiment of table, 5 water outlet is contrasted with raw water quality index
From data in table 5, the method for the present embodiment can will go the copper ion in purple secondary raw water to be down to from 1865mg/L
0.6mg/L, removal rate 99.97%;Raw water CODCrValue is down to 1506mg/L from 3962mg/L.
Claims (1)
1. it is a kind of using the method for activating Special Casting Iron material process organic wastewater containing cupric ammine complex, include the following steps:
A, use quality fraction adjusts the pH to 4.0 of the organic wastewater containing cupric ammine complex for 98% concentrated sulfuric acid;Have containing cupric ammine complex
The copper ion of machine waste water is 3346mg/L;The organic wastewater containing cupric ammine complex is to remove purple secondary waste water;
B, activation Special Casting Iron material is added into waste water, its dosage is 1.5%, mixing speed 80rpm of wastewater quality,
Reaction time is 30min;
The activation Special Casting Iron material is graininess, and particle diameter is 50 mesh, the mass fraction 58 of iron, the mass fraction 27 of carbon,
The mass fraction 13 of copper;
C, it is 30% hydrogen peroxide to continue to add mass fraction in water outlet after reaction, and dosage is the 1.5% of wastewater volume, empty
Gas agitating, reaction time 180min;
D, liquid caustic soda is added, it is 10 to be neutralized to pH, after precipitation, Chinese effluent.
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CN104086033A (en) * | 2014-08-05 | 2014-10-08 | 段希福 | Treatment method of copper-containing industrial wastewater |
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CN101704565A (en) * | 2009-11-16 | 2010-05-12 | 同济大学 | Preparation method of iron-carbon micro-electrolytic filler |
CN101723487A (en) * | 2009-12-21 | 2010-06-09 | 昆明理工大学 | Method for recovering copper in copper-containing acid waste water of mine |
CN202016918U (en) * | 2011-03-21 | 2011-10-26 | 郑州宇通环保科技有限公司 | Iron-carbon micro electrolysis reactor |
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