CN102863042A - Method for simultaneously treating dyeing wastewater and chemical industry organic wastewater - Google Patents
Method for simultaneously treating dyeing wastewater and chemical industry organic wastewater Download PDFInfo
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- CN102863042A CN102863042A CN2012103494076A CN201210349407A CN102863042A CN 102863042 A CN102863042 A CN 102863042A CN 2012103494076 A CN2012103494076 A CN 2012103494076A CN 201210349407 A CN201210349407 A CN 201210349407A CN 102863042 A CN102863042 A CN 102863042A
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- wastewater
- hydrotalcite
- waste water
- dyeing
- organic wastewater
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Abstract
The invention provides a method for simultaneously treating dyeing wastewater and chemical industry organic wastewater, which comprises the following steps: analyzing the quantity of anionic dyes in dyeing wastewater, adding hydrotalcite, adding chemical industry organic wastewater, stirring, and carrying out precipitation separation, so that the wastewater can be discharged after reaching the standard. The invention has the following advantages: (1) the hydrotalcite added into water is prepared into organic hydrotalcite in the wastewater treatment process by using the anionic dyes in the dyeing wastewater, and meanwhile, organic substances in the chemical industry organic wastewater are adsorbed to the hydrotalcite interlayer, thereby removing the pollutants and purifying the wastewater; (2) the separated hydrotalcite can also be used for treating corresponding organic wastewater; and (3) the technique obviously lowers the cost for treating the two types of wastewater, and is easy to popularize and use.
Description
Technical field
The present invention relates to the exploitation of environmental pollution control new technology, relate in particular to always the simultaneously method for the treatment of of dyeing and printing and chemical industrial organic wastewater.
Background technology
Synthetic dyestuff have complicated aromatic hydrocarbon molecular structure, and are of a great variety, are difficult to biological degradation.Some dyestuff or its degraded product have strong carcinogenic, teratogenesis, mutagenic effect, thereby the water body of dye discoloration is processed to have become one of difficult problem to be solved is arranged.It is reported that commercial dyes has 10,000 kinds approximately, the ultimate production of annual dyestuff is 600,000 tons, and China's annual production has reached 150,000 tons, and nearly 10%～20% dyestuff can directly enter environment with water in the production process.Waste water from dyestuff often has the characteristics such as colourity height, toxicity be large.
Usually use the dye wastewater treatment using such as physics, chemistry or biological method such as coagulating sedimentation, chemical oxidation, ion-exchange, supermembrane filter, photochemical catalytic oxidation, microorganism absorption degradation, yet, these technology are not too obvious to the removal effect of colourity in the waste water, and processing costs is high, and the scope of processing waste water is narrower.Along with rapid development of economy, the Chemicals production process is to the pollution aggravation of environment, harm to human health is also more prevalent and serious, the organic substance of wherein particularly discharging in fine chemical product (such as pharmacy, dyestuff, the daily use chemicals etc.) production process all is the material of complex structure, poisonous and harmful and biological hard degradation mostly.Therefore, the difficulty of chemical wastewater treatment is larger.The essential characteristic of wastewater from chemical industry is high COD, high salinity, toxic to microorganism, is typical used water difficult to degradate, is research emphasis and the focus of present water technology aspect.The signature analysis of wastewater from chemical industry is as follows: (1) water-quality constituents is complicated, and by product is many, and reaction raw materials is the compound of solvent based material or ring texture often, has increased the intractability of waste water; (2) Pollutants in Wastewater content is high, this be since raw material reaction not exclusively and raw material or produce in a large amount of solvent mediums of use to have entered the waste water system caused; (3) hazardous and noxious substances is many, and it is poisonous and hazardous to microorganism that many organic pollutants are arranged in the Fine Chemistry Wastewater, such as halogen compounds, nitro-compound, the dispersion agent with germicidal action or tensio-active agent etc.; (4) the bio-refractory material is many, and B/C is than low, and biodegradability is poor; (5) chroma in waste water is high.Wastewater from chemical industry is a kind of more unmanageable waste water.
Layered di-hydroxyl composite metal oxidate (Layered Double Hydroxides is called for short LDH) claims again hydrotalcite, is the important inorganic functional material of a class.The adjustable sex change of the laminate structure that it is unique and laminate element and interlayer anion gets more and more people's extensive concerning, introduce new object negatively charged ion through ion-exchange to interlayer and can make laminate structure and composition produce corresponding the variation, thereby can prepare the functional materials that a large class has special property.Hydrotalcite material belongs to anion type laminated compound.The compounds that lamellar compound refers to have laminate structure, interlayer ion has interchangeability, utilize intercalation that the lamellar compound main body has and the interchangeability of interlayer ion under strong polar molecule effect, form layer-pillared compound thereby some functional guest species are introduced bedding voids and the laminate distance strutted.
The hydrotalcite chemical structure of general formula is: [M
2+ 1-xM
3+X (OH)
2]
X+[(A
N-)
X/nMH
2O], M wherein
2+Be Mg
2+, Ni
2+, Mn
2+, Zn
2+, Ca
2+, Fe
2+, Cu
2+Deng the divalent metal negatively charged ion; M
3+Be Al
3+, Cr
3+, Fe
3+, Co
3+Deng the trivalent metal negatively charged ion; A
N-Be negatively charged ion, such as CO
3 2-, NO
3 -, Cl
-, OH
-, SO
4 2-, PO
4 3-, C
6H
4(COO)
2 2-Etc. inorganic and organic ion and complexing ion, different when the interlayer inorganic anion, the interlamellar spacing of hydrotalcite is different, and after the hydrotalcite absorb polluted matter, interlamellar spacing also can increase, to hold more pollutent simultaneously.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency of processing chemical industrial organic wastewater and dyeing waste water in the prior art, the method for a kind of while treatment of dyeing and printing and chemical industrial organic wastewater is provided.
For solving the problems of the technologies described above the technical solution used in the present invention be: the method for a kind of while treatment of dyeing and printing and chemical industrial organic wastewater, step is as follows:
Analyze the amount of anionic dyestuff in the dyeing waste water, add hydrotalcite, then add chemical industrial organic wastewater, stir, precipitate and separate, waste water gets final product qualified discharge.
Described hydrotalcite is 50 ~ 100 purpose hydrotalcites, and according to the amount of anionic dyestuff in the dyeing waste water of analyzing, the hydrotalcite add-on is that every mmole anionic dyestuff adds 0.8 ~ 1.6g in the dyeing waste water.
According to the COD concentration of chemical industrial organic wastewater, described chemical industrial organic wastewater mixes for 1:1 ~ 1:3 by volume with dyeing waste water.
Described stirring is for continuing to stir 2 ~ 3h.
Described hydrotalcite can be commercially available commodity, also can prepare according to prior art, and its technology of preparing is commonly known.The hydrotalcite chemical structure of general formula is: [M
2+ 1-xM
3+X (OH)
2]
X+[(A
N-)
X/nMH
2O], M wherein
2+Be Mg
2+, Ni
2+, Mn
2+, Zn
2+, Ca
2+, Fe
2+, Cu
2+Deng in the divalent metal any; M
3+Be Al
3+, Cr
3+, Fe
3+, Co
3+Deng in the trivalent metal cation any; A
N-Be negatively charged ion, such as CO
3 2-, NO
3 -, Cl
-, OH
-, SO
4 2-, PO
4 3-Deng in the mineral ion any; X=0.5 ~ 0.15; M
2+/ M
3+=1 ~ 5.
The invention has the beneficial effects as follows:
(1) utilizes anionic dyestuff in the dyeing waste water, the hydrotalcite that is added to the water is made organic hydrotalcite when processing this waste water, and the organism in the chemical industrial organic wastewater is adsorbed to hydrotalcite layers simultaneously, and pollutent is removed, and waste water is purified.
(2) hydrotalcite that obtains after the separation can also be for the treatment of corresponding organic waste water.
(3) this technique has significantly reduced the cost of this two classes wastewater treatment, is easy to promote the use of.
Embodiment
3 embodiment of the present invention below further are provided:
Embodiment 1
Amount according to anionic dyestuff in the dyeing waste water to be processed, add the hydrotalcite powder that 0.8g crosses 100 mesh sieves by every mmole anionic dyestuff, and then adding chemical industrial organic wastewater, the COD concentration of this chemical industrial organic wastewater is 1000mg/L, the ratio of chemical industrial organic wastewater and dyeing waste water is the 1:1(volume ratio) lasting 3h, the precipitate and separate of stirring.
Measure the COD of waste water after separating, by analysis, the clearance of COD is 92.2%.
Under same condition, in dyeing waste water, add first same hydrotalcite, after stirring 3h, precipitate and separate, at 90 ℃ of lower baking 2 ~ 3h, at 105 ℃ of activation 1h, obtain organic hydrotalcite again, the product that obtains was ground 100 mesh sieves, again this power applications is processed in the chemical industrial organic wastewater of the same race of the identical water yield, stirred 3h, precipitate and separate, measure the COD of dyeing waste water and chemical industrial organic wastewater, clearance is respectively 80.4% and 75.2%.Process is complicated, and through the organic hydrotalcite of oven dry in waste water because the surface becomes hydrophobic and difficulties in dispersion causes treatment effect on the low side by hydrophilic.
Embodiment 2
Amount according to anionic dyestuff in the dyeing waste water to be processed, add the hydrotalcite powder that 1.6g crosses 50 mesh sieves by every mmole anionic dyestuff, and then adding chemical industrial organic wastewater, the COD concentration of this chemical industrial organic wastewater is 5000mg/L, the ratio of chemical industrial organic wastewater and dyeing waste water is the 1:3(volume ratio) lasting 2h, the precipitate and separate of stirring.
Measure the COD of waste water after separating, by analysis, the clearance of COD is 83.7%.
Under same condition, in dyeing waste water, add first same hydrotalcite, after stirring 2h, precipitate and separate, at 90 ℃ of lower baking 2 ~ 3h, at 105 ℃ of activation 1h, obtain organic hydrotalcite again, the product that obtains was ground 50 mesh sieves, again this power applications is processed in the chemical industrial organic wastewater of the same race of the identical water yield, stirred 2h, precipitate and separate, measure the COD of dyeing waste water and chemical industrial organic wastewater, clearance is respectively 76.5% and 70%.Process is complicated, and through the organic hydrotalcite of oven dry in waste water because the surface becomes hydrophobic and difficulties in dispersion causes treatment effect on the low side by hydrophilic.
Embodiment 3
Amount according to anionic dyestuff in the dyeing waste water to be processed, add the hydrotalcite powder that 0.8g crosses 100 mesh sieves by every mmole anionic dyestuff, and then adding wastewater from chemical industry, the COD concentration of this chemical industrial organic wastewater is 3000mg/L, the ratio of chemical industrial organic wastewater and dyeing waste water is the 1:2(volume ratio) lasting 3h, the precipitate and separate of stirring.
Measure the COD of waste water after separating, by analysis, the clearance of COD is 86.5%.
The hydrotalcite that above-mentioned separation is obtained joins by 1:1000 in the organic waste water of pending p-nitrophenyl, stirs after 60 minutes, and the precipitation solid-liquid separation, ultraviolet-visible pectrophotometer is measured supernatant liquor concentration, and pollutants removal rate is 85.2%.
Under same condition, in dyeing waste water, add first same hydrotalcite powder (identical with 100 order hydrotalcite powder in the present embodiment first paragraph), after stirring 3h, precipitate and separate, at 90 ℃ of lower baking 2 ~ 3h, again at 105 ℃ of activation 1h, obtain organic hydrotalcite, the product that obtains was ground 100 mesh sieves, with the of the same race chemical wastewater treatment of this power applications in the identical water yield, stir 3h, precipitate and separate again, measure the COD of dyeing waste water and wastewater from chemical industry, clearance is respectively 78.6% and 72.4%.Process is complicated, and through the organic hydrotalcite of oven dry in waste water because the surface becomes hydrophobic and difficulties in dispersion causes treatment effect on the low side by hydrophilic.
Claims (4)
1. method for the treatment of of dyeing and printing and chemical industrial organic wastewater simultaneously, it is characterized in that: step is as follows:
Analyze the amount of anionic dyestuff in the dyeing waste water, add hydrotalcite, then add chemical industrial organic wastewater, stir, precipitate and separate, waste water gets final product qualified discharge.
2. the method for while treatment of dyeing and printing according to claim 1 and chemical industrial organic wastewater, it is characterized in that: described hydrotalcite is 50 ~ 100 purpose hydrotalcites, the hydrotalcite add-on is that every mmole anionic dyestuff adds 0.8 ~ 1.6g in the dyeing waste water.
3. the method for while treatment of dyeing and printing according to claim 1 and chemical industrial organic wastewater, it is characterized in that: described chemical industrial organic wastewater mixes for 1:1 ~ 1:3 by volume with dyeing waste water.
4. the method for while treatment of dyeing and printing according to claim 1 and chemical industrial organic wastewater is characterized in that: described stirring is for continuing to stir 2 ~ 3h.
Priority Applications (1)
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|---|---|---|---|
| CN2012103494076A CN102863042A (en) | 2012-09-19 | 2012-09-19 | Method for simultaneously treating dyeing wastewater and chemical industry organic wastewater |
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342594A (en) * | 2019-07-25 | 2019-10-18 | 安徽理工大学 | A kind for the treatment of process of dyeing waste water and wastewater from chemical industry |
Citations (5)
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|---|---|---|---|---|
| EP1186343A1 (en) * | 2000-03-14 | 2002-03-13 | Kyowa Chemical Industry Co., Ltd. | Adsorbent for aromatic hydroxy compound and utilization thereof |
| CN1569671A (en) * | 2003-07-24 | 2005-01-26 | 合肥工业大学 | Water treatment method for instant synthesis of laminated bis-hydroxide |
| CN1631506A (en) * | 2004-11-26 | 2005-06-29 | 北京化工大学 | Laminar absorption functional material aiming at hydrophobic organic substance and its preparing method |
| CN101664665A (en) * | 2009-10-15 | 2010-03-10 | 北京化工大学 | Layered adsorbent of wastewater containing thiosulfate and treatment method thereof |
| CN102173440A (en) * | 2010-12-31 | 2011-09-07 | 浙江工业大学 | Magnesium/aluminium (Mg/Al) binary hydrotalcite and application thereof in treatment of chemical wastewater |
-
2012
- 2012-09-19 CN CN2012103494076A patent/CN102863042A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1186343A1 (en) * | 2000-03-14 | 2002-03-13 | Kyowa Chemical Industry Co., Ltd. | Adsorbent for aromatic hydroxy compound and utilization thereof |
| CN1569671A (en) * | 2003-07-24 | 2005-01-26 | 合肥工业大学 | Water treatment method for instant synthesis of laminated bis-hydroxide |
| CN1631506A (en) * | 2004-11-26 | 2005-06-29 | 北京化工大学 | Laminar absorption functional material aiming at hydrophobic organic substance and its preparing method |
| CN101664665A (en) * | 2009-10-15 | 2010-03-10 | 北京化工大学 | Layered adsorbent of wastewater containing thiosulfate and treatment method thereof |
| CN102173440A (en) * | 2010-12-31 | 2011-09-07 | 浙江工业大学 | Magnesium/aluminium (Mg/Al) binary hydrotalcite and application thereof in treatment of chemical wastewater |
Non-Patent Citations (3)
| Title |
|---|
| 姚铭等: "合成水滑石治理水体阴离子染料污染研究", 《环境科学学报》 * |
| 朱茂旭等: "水滑石及其焙烧产物对阴离子染料酸性蓝-80的吸附", 《环境化学》 * |
| 王立秋等: "水滑石对水溶性染料活性深蓝ST-2GLN脱色性能研究", 《矿物学报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110342594A (en) * | 2019-07-25 | 2019-10-18 | 安徽理工大学 | A kind for the treatment of process of dyeing waste water and wastewater from chemical industry |
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Application publication date: 20130109 |