CN102863044A - Method for synchronously processing washing wastewater and organic chemical industrial wastewater - Google Patents
Method for synchronously processing washing wastewater and organic chemical industrial wastewater Download PDFInfo
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- CN102863044A CN102863044A CN2012103497676A CN201210349767A CN102863044A CN 102863044 A CN102863044 A CN 102863044A CN 2012103497676 A CN2012103497676 A CN 2012103497676A CN 201210349767 A CN201210349767 A CN 201210349767A CN 102863044 A CN102863044 A CN 102863044A
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- wastewater
- hydrotalcite
- chemical industrial
- washes
- organic wastewater
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Abstract
The invention provides a method for synchronously processing washing wastewater and organic chemical industrial wastewater. The method comprises steps as follows: analyzing the quantity of an anionic surface agent in the washing wastewater; adding hydrotalcite; then adding chemical industrial wastewater; agitating; and precipitating and separating, thus the wastewater can be discharged with standard level. The method provided by the invention has the beneficial effects that: (1) the hydrotalcite added to the water is prepared into organic hydrotalcite during processing the wastewater through the anionic surface agent in the washing wastewater; and meanwhile the organic matter in the organic chemical wastewater is attached to the hydrotalcite layers, so that the pollutant can be removed, and the wastewater can be purified; (3) the hydrotalcite obtained after being separated can be used for processing relevant organic wastewater; and (3) the cost of processing the two types of wastewater can be obviously reduced; and the method 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 a kind of method of processing simultaneously washes and chemical industrial organic wastewater.
Background technology
Contain tensio-active agent (mainly being that anion surfactant is such as long alkyl chain length sulfonate) in the washes, tripoly phosphate sodium STPP, the auxiliary agents such as carboxymethyl cellulose, greasy dirt, dust particle and various microorganisms etc., outward appearance is muddy, COD is 300～800mg/L, pH is 6.5～7.5, and suspension content is higher, generally at 500～1200mg/L.Phosphoric acid salt enters the eutrophication that water body can cause water body.After tensio-active agent enters water body, aquatic animal,plants is poisoned cause death, make some Micropollutants solubilising in the water, thereby increase the difficulty that water supply plant is processed; When entering washing composition in municipal sewage plant's sewage and reaching finite concentration, can affect many processes such as aeration, precipitation, sludge digestion.
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.
At present organic hydrotalcite commonly used synthetic mainly contains following method: coprecipitation method, roasting restoring method and ion exchange method.
Coprecipitation method although be one-step synthesis, must strictly be avoided CO owing to being easy to be subjected to the pollution of Carbon Dioxide in Air in the building-up process
2Participation, severe reaction conditions, and need very long crystallization time is unfavorable for industrialization promotion and application.
The roasting restoring method is utilized LDHs " memory effect ", and layer pole structure is rebuild, and organic anion enters interlayer, obtains the organic anion pillared hydrotalcite.Because the structure of hydrotalcite can only partly be recovered, and is difficult to obtain pure crystal phase structure with the roasting restoring method.In addition, this method need to be carried out N strict in high-temperature roasting and the follow-up phase to the hydrotalcite precursor
2The reaction conditions that protection etc. are harsh has brought inconvenience to practical application.
Ion exchange method is the important method of the organic anion pillared hydrotalcite of preparation.This method be the LDHs that is easy to synthesize as precursor, by ion-exchange the target negatively charged ion is introduced interlayer, obtain corresponding organic anion pillared hydrotalcite.Reaction conditions by control ion-exchange not only can keep the original laminate structure of hydrotalcite, can also kind and the quantity of interlayer anion be designed and assemble, thereby obtain the anion layer columnar material of different structure and function.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency of processing wastewater from chemical industry and washes in the prior art, a kind of method of processing simultaneously washes 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: a kind of method of processing simultaneously washes and chemical industrial organic wastewater, step is as follows:
Analyze the amount of anion surfactant in the washes, add hydrotalcite, then add chemical industrial organic wastewater, stir, precipitate and separate, waste water gets final product qualified discharge.Described hydrotalcite was the hydrotalcite powder of 50 ~ 100 mesh sieves.
According to the amount of anion surfactant in the washes of analyzing, the hydrotalcite add-on is that every mmole anion surfactant adds 0.8 ~ 1.6g in the washes.
According to the COD concentration of chemical industrial organic wastewater, described chemical industrial organic wastewater mixes for 1:1 ~ 1:3 by volume with washes.
Described churning time is 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 anion surfactant in the washes, 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 anion surfactant in the washes to be processed, add the hydrotalcite powder that 0.8g crosses 100 mesh sieves by every mmole anion surfactant, then add chemical industrial organic wastewater, the concentration of the COD of this chemical industrial organic wastewater is 1000mg/L, the ratio of chemical industrial organic wastewater and washes 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 91.5%.
Under same condition, in washes, 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 anion surfactant in the washes to be processed, add the hydrotalcite powder that 1.6g crosses 50 mesh sieves by every mmole anion surfactant, 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 washes 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 85.2%.
Under same condition, in washes, 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 washes and wastewater from chemical industry, 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 anion surfactant in the washes to be processed, add the hydrotalcite powder that 0.8g crosses 100 mesh sieves by every mmole anion surfactant, and then adding chemical industrial organic wastewater, the COD concentration of this chemical industrial organic wastewater is 3000mg/L, the ratio of chemical industrial organic wastewater and washes 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 87.7%.
Separate the hydrotalcite that obtains and join by 1:1000 in the organic waste water of pending p-nitrophenyl, stir after 60 minutes, the precipitation solid-liquid separation, ultraviolet-visible pectrophotometer is measured supernatant liquor concentration, and pollutants removal rate is 87.9%.
Under same condition, in washes, 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. a method of processing simultaneously washes and chemical industrial organic wastewater is characterized in that, step is as follows:
Analyze the amount of anion surfactant in the washes, add hydrotalcite, then add chemical industrial organic wastewater, stir, precipitate and separate, waste water gets final product qualified discharge.
2. the method for processing simultaneously washes and chemical industrial organic wastewater according to claim 1, it is characterized in that, described hydrotalcite was the hydrotalcite powder of 50 ~ 100 mesh sieves, and the hydrotalcite add-on is that every mmole anion surfactant adds 0.8 ~ 1.6g in the washes.
3. the method for processing simultaneously washes and chemical industrial organic wastewater according to claim 1 is characterized in that, described chemical industrial organic wastewater mixes for 1:1 ~ 1:3 by volume with washes.
4. the method for processing simultaneously washes and chemical industrial organic wastewater according to claim 1 is characterized in that, described churning time is 2 ~ 3h.
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|---|---|---|---|
| CN2012103497676A CN102863044A (en) | 2012-09-19 | 2012-09-19 | Method for synchronously processing washing wastewater and organic chemical industrial wastewater |
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|---|---|---|---|
| CN2012103497676A CN102863044A (en) | 2012-09-19 | 2012-09-19 | Method for synchronously processing washing wastewater and organic chemical industrial wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060560A (en) * | 2015-08-05 | 2015-11-18 | 常州市长润石油有限公司 | Waste lubricating oil regeneration production waste water treatment method |
Citations (6)
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| DE4140745A1 (en) * | 1991-12-11 | 1993-06-17 | Henkel Kgaa | REPROCESSING OF AQUEOUS INDUSTRIAL CLEANING BATHS |
| CN1248590A (en) * | 1998-09-21 | 2000-03-29 | 协和化学工业株式会社 | Depled uranium hydrotalcite compound and preparation process thereof |
| CN1462726A (en) * | 2003-04-07 | 2003-12-24 | 浙江大学 | Integral method of synthesizing organobentonite-treating wastewater |
| 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 |
| CN1843951A (en) * | 2006-04-19 | 2006-10-11 | 浙江大学 | Method for treating printing/dyeing waste water |
-
2012
- 2012-09-19 CN CN2012103497676A patent/CN102863044A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4140745A1 (en) * | 1991-12-11 | 1993-06-17 | Henkel Kgaa | REPROCESSING OF AQUEOUS INDUSTRIAL CLEANING BATHS |
| CN1248590A (en) * | 1998-09-21 | 2000-03-29 | 协和化学工业株式会社 | Depled uranium hydrotalcite compound and preparation process thereof |
| US6287532B1 (en) * | 1998-09-21 | 2001-09-11 | Kyowa Chemical Industry Co Ltd | Hydrotalcite compounds of low uranium (U) content and processes for their preparation |
| CN1462726A (en) * | 2003-04-07 | 2003-12-24 | 浙江大学 | Integral method of synthesizing organobentonite-treating wastewater |
| 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 |
| CN1843951A (en) * | 2006-04-19 | 2006-10-11 | 浙江大学 | Method for treating printing/dyeing waste water |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105060560A (en) * | 2015-08-05 | 2015-11-18 | 常州市长润石油有限公司 | Waste lubricating oil regeneration production waste water treatment method |
| CN105060560B (en) * | 2015-08-05 | 2017-02-22 | 常州市长润石油有限公司 | Waste lubricating oil regeneration production waste water treatment method |
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Application publication date: 20130109 |