CN101767859A - Waste water treatment method combining Fenton oxidization and microwave catalysis phase - Google Patents
Waste water treatment method combining Fenton oxidization and microwave catalysis phase Download PDFInfo
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- CN101767859A CN101767859A CN201010000856A CN201010000856A CN101767859A CN 101767859 A CN101767859 A CN 101767859A CN 201010000856 A CN201010000856 A CN 201010000856A CN 201010000856 A CN201010000856 A CN 201010000856A CN 101767859 A CN101767859 A CN 101767859A
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- waste water
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- fenton reagent
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Abstract
The invention discloses a method for treating industrial waste water by combining Fenton oxidization and a microwave catalysis phase. The method comprises the following steps of: adjusting the PH value of the waste water to be smaller than 6; adding a Fenton reagent and uniformly stirring; ensuring that the waste water with the added Fenton reagent flows through a microwave field; and ensuring that the waste water flowing through the microwave field is subjected to solid, liquid and gas three-phase separation, and if necessary, neutralizing and separating acid in obtained liquid. In the invention, the industrial waste water is continuously treated under a flowing condition by utilizing the modes of oxidizing organic matters in the industrial waste water by using the Fenton reagent and catalyzing an oxidizing reaction process by microwaves, thus the invention has the characteristics of short treatment time, good reaction effect, high COD (chemical oxygen demand) removal rate and space saving so as to truly realize the industrial application of the Fenton method.
Description
Technical field
The present invention relates to a kind of method of handling trade effluent and municipal effluent, more specifically, is the method for wastewater treatment that a kind of Fenton of employing oxidation and microwave catalysis combine, and belongs to water treatment field.
Background technology
Waste water is meant waste water, sewage and the waste liquid that produces in industrial production and the people's lives process.Along with developing rapidly of industry, the kind and the quantity of waste water rapidly increase, and is also extensive day by day and serious to the pollution of water body, threatens human beings'health and safety.Though the processing of trade effluent began as far back as 19 end of the centurys, and a large amount of experimental studies and production practice have been carried out in half a century subsequently, but because many trade effluent complicated components, character is changeable, still has some technical problems not solve fully so far.
20th century, particularly since the 1950's, the development of infant industries such as chemical industry grew with each passing day artificial synthetic organic materials kind and quantity.At present, about more than 700 ten thousand kinds of known organism kinds, and still with every year thousands of speed increasing.Whole world synthesis of organic substance total amount has reached 2.5 hundred million tons, these organism and have entered environment by all means, cause a series of water pollutions, the deterioration of the ecological environment, threaten the development and the social progress, particularly developing country of human survival and obstruction related industries particularly serious.The generation 80%-90% of human cancer is relevant with environmental factors, and is finding in the carcinogenic chemical, is organic pollutant more than 80%.Therefore, high concentrated organic wastewater is the improvement of harmful poisonous organic waste water particularly, has become the difficult problem that present stage home and abroad environment protection field needs to be resolved hurrily.
High concentrated organic wastewater in the waste water mainly originates in industries such as chemical industry, chemical pharmacy, agricultural chemicals, medicine intermediate and fuel chemical industry, such waste water has " four high two is low " promptly: Pollutant levels height, saltiness height, colourity height and toxicity height, pH value is low, the B/C value is low, the characteristics of biodegradability difference, and often contain extraordinary unmanageable pollution factor in the waste water, generally more than several thousand to several ten thousand mg/L, intractability is very big for COD value of waste water.
The method that high concentrated organic wastewater commonly used is at present handled has oxidation-absorption method, burning method, absorption method and other biological, chemistry, physical method or the like, existing microwave treatment technology is to exist as the main body of handling trade effluent with microwave, add reagent and adjust the PH=7 of waste water, for microwave treatment is prepared, shortcomings such as it is indeterminate to exist the mechanism of action, and result is unexpected.
The principal pollutant that comprised in the waste water are high-enriched organics, the index of statement pollution concentration is chemical oxygen demand cod and biological oxygen demand (BOD) BOD, the effective ways of handling them are exactly oxidation in fact, but the common oxidation style treatment time is long, DeGrain, with the micro-wave energy catalytic oxidation process, then will inevitably produce fairly obvious effect if can find a kind of strong oxidizer sewage oxidation treatment.This patent is to adopt a kind of use Fenton reagent as the strong oxidizer oxidized waste water, utilizes the characteristic catalytic oxidation process of micro-wave energy, makes to be swift in response thoroughly, and the COD clearance reaches more than 90%, and decolorizing effect is fairly obvious.For a highly effective method has been found in wastewater treatment.
Summary of the invention
The objective of the invention is to use the organism in Fenton reagent oxidation processing trade effluent and the municipal effluent, utilize the micro-wave energy catalytic oxidation process, long to solve trade effluent and municipal sewage treatment time, handle not thorough, a series of problems such as requisite space is big.Oxidizing reaction exists as the main body of handling waste water, and the effect of microwave is the catalytic oxidation process.
Above-mentioned purpose realizes by following technique means:
The method that adopts Fenton reagent oxidation and microwave catalysis to combine, exist as the main body of handling trade effluent and municipal effluent with the Fenton oxidation, the microwave catalysis oxidation reaction process is dynamically finished for trade effluent and municipal sewage treatment under the continuous regime.
Concrete grammar is as follows:
1) pH value of adjustment waste water makes its PH＜6;
2) add continuously Fenton reagent and stirring in waste water, wherein, the consumption of described Fenton reagent comes definite according to the COD value of waste water, and the dry measure add-on of described Fenton reagent is 2-8mg/COD;
3) make above-mentioned waste water flow through microwave field, wherein, the microwave frequency of described microwave field is 915MHz, and microwave power is 5kw-140kw;
4) make the above-mentioned waste water that flows through microwave field make gas-liquid separation by air water separator earlier, make solid-liquid separation by settling tank or air-floating apparatus again, thereby realize solid, liquid, gas three phase separation, the liquid that is purified.
Further, the pH value of waste water described in the step 1) is preferably 3.5.
Further, during this method also comprises and above-mentioned steps 4) in acid in the separating obtained liquid.
Described Fenton reagent is by H
2O
2And Fe
2+Mix a kind of strong oxidizer that obtains, in trade effluent and municipal sewage treatment, be widely used, be specially adapted to some refractories reason or to virose trade effluent of biology and municipal sewage treatment, but during singly with this agent treated trade effluent and municipal effluent, its long reaction time, in a large amount of trade effluents and municipal sewage treatment, need very big space and deposit waste water, generally be difficult to satisfy, if utilize the microwave energy catalytic reaction process, it is short to reach the time, react effect completely, can satisfy the needs that enterprise and society handle trade effluent and municipal effluent.
When hydrogen peroxide exists at catalyzer iron etc., can generate hydroxyl free radical (OH), hydroxyl free radical has higher oxidizing electrode current potential than some other oxygenant commonly used, so hydroxyl free radical is a kind of very strong oxygenant.Fenton reagent is specially adapted to the oxide treatment of the organic waste water that bio-refractory or general chemical oxidation be difficult to prove effective, and is able to broad research and uses.
The characteristics of microwave are energy uniform distribution in water, its energy then can concentrate on some material in waste water, when microwave field acts on the trade effluent that contains Fenton reagent and municipal effluent, because the existence of iron ion in the Fenton reagent, microwave energy is absorbed by iron ion, movement velocity was accelerated after iron ion absorbed energy, generated hydroxyl free radical (OH) at short notice rapidly.Hydroxyl free radical is the organism in the rapid oxidized waste water under the effect of microwave field, and produces oxide compound throw out precipitation and a large amount of nitrogen release.
The present invention utilizes the oxidation capacity oxidation trade effluent of Fenton reagent and the high-enriched organics in the municipal effluent, utilize the microwave energy catalytic oxidation, and under dynamical state, handle trade effluent and municipal effluent, shortened oxidation time, strengthened the oxidizing reaction effect, saved the processing requisite space, processing power reaches 0.5m
3/ h-1500m
3/ h can reach fast thoroughly water purifying purpose, reaches more than 90% for the clearance of COD, and decolorizing effect is very remarkable.
Embodiment
Following examples are in order to illustrating in greater detail the present invention, but are not in order to limit the present invention.
Handle cotton pulp dregs of rice waste water (containing black liquor) with the present invention, between the 850mg/L, colourity is 300 times to former Aerobic Pond water outlet COD value at 400mg/L.Wastewater flow is 450m
3/ h.
1) add earlier the vitriol oil in waste water, the pH value of adjusting waste water is to PH=5.5;
2) then add Fenton reagent and stirring, wherein, the dry measure add-on of Fenton reagent is 3mg/COD;
3) use lift pump to make waste water flow through microwave field then, wherein, the microwave frequency of microwave field is 915MHz, and microwave power is 40kw;
4) last, make microwave field effect waste water afterwards carry out the solid, liquid, gas three phase separation by air water separator and settling tank successively, the COD value of separating obtained liquid is between 30-60mg/L, and colourity is less than 50 times.
Utilize the present embodiment method to handle waste water, significantly reduced the COD value of waste water rapidly, and decolorizing effect is obvious, has realized quick water purifying purpose; Again because wastewater treatment dynamically implementing under the continuous regime, has greatly been saved the required space of wastewater treatment.
Claims (3)
1. a method of handling trade effluent is characterized in that, the method that has adopted Fenton oxidation and microwave catalysis to combine comprises the steps:
1) pH value of adjustment waste water makes its PH＜6;
2) add continuously Fenton reagent and stirring in waste water, wherein, the consumption of described Fenton reagent comes definite according to the COD value of waste water, and the dry measure add-on of described Fenton reagent is 2-8mg/COD;
3) make above-mentioned waste water flow through microwave field, wherein, the microwave frequency of described microwave field is 915MHz, and microwave power is 5kw-140kw;
4) make the above-mentioned waste water that flows through microwave field make gas-liquid separation by air water separator earlier, make solid-liquid separation by settling tank or air-floating apparatus again, thereby realize solid, liquid, gas three phase separation, the liquid that is purified.
2. the method for processing trade effluent according to claim 1 is characterized in that, described method further comprises neutralization procedure 4) in acid in the separating obtained liquid.
3. according to the method for claim 1 or 2 each described processing trade effluents, it is characterized in that the flow velocity that described waste water flows through microwave field is 0.5m
3/ h-1500m
3/ h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010000856A CN101767859A (en) | 2010-01-19 | 2010-01-19 | Waste water treatment method combining Fenton oxidization and microwave catalysis phase |
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|---|---|---|---|
| CN201010000856A CN101767859A (en) | 2010-01-19 | 2010-01-19 | Waste water treatment method combining Fenton oxidization and microwave catalysis phase |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001780A (en) * | 2010-11-29 | 2011-04-06 | 沈阳工业大学 | Method for pre-treating high-concentration organic waste water |
| CN102424451A (en) * | 2011-10-21 | 2012-04-25 | 沈阳建筑大学 | Processing method for Fenton-Like oxidation of high density heavy oil wastewater through inducing fly ash source by microwaves |
| CN102765783A (en) * | 2011-05-03 | 2012-11-07 | 同济大学 | Microwave electro-Fenton method for processing organic wastewater and device thereof |
| CN103058294A (en) * | 2011-10-18 | 2013-04-24 | 成都快典科技有限公司 | Sewage treatment process by microwave |
| CN103214059A (en) * | 2013-04-09 | 2013-07-24 | 沈阳工业大学 | Microwave-Fenton unified all-in-one machine for treating organic chemical wastewater |
| CN103723873A (en) * | 2014-01-10 | 2014-04-16 | 福建省双旗山矿业有限责任公司 | Method for treating waste acid in acid-making with smelting gas |
| CN105540988A (en) * | 2016-01-15 | 2016-05-04 | 航天圣诺（北京）环保科技有限公司 | Effluent treatment technology and system based on combination of super magnetic separation and microwave energy technology |
| CN106242136A (en) * | 2016-08-31 | 2016-12-21 | 浙江奇彩环境科技股份有限公司 | A kind of processing method containing pyridines waste water |
| CN107680704A (en) * | 2017-09-26 | 2018-02-09 | 西南科技大学 | A kind of method of microwave cooperating Fenton reagent fast degradation radioactive waste ion exchange resin |
| CN107777751A (en) * | 2016-08-29 | 2018-03-09 | 中国石油化工股份有限公司 | A kind of new method for handling nitropheneol waste water |
-
2010
- 2010-01-19 CN CN201010000856A patent/CN101767859A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102001780A (en) * | 2010-11-29 | 2011-04-06 | 沈阳工业大学 | Method for pre-treating high-concentration organic waste water |
| CN102765783A (en) * | 2011-05-03 | 2012-11-07 | 同济大学 | Microwave electro-Fenton method for processing organic wastewater and device thereof |
| CN103058294A (en) * | 2011-10-18 | 2013-04-24 | 成都快典科技有限公司 | Sewage treatment process by microwave |
| CN102424451A (en) * | 2011-10-21 | 2012-04-25 | 沈阳建筑大学 | Processing method for Fenton-Like oxidation of high density heavy oil wastewater through inducing fly ash source by microwaves |
| CN103214059B (en) * | 2013-04-09 | 2014-07-30 | 沈阳工业大学 | Microwave-Fenton unified all-in-one machine for treating organic chemical wastewater |
| CN103214059A (en) * | 2013-04-09 | 2013-07-24 | 沈阳工业大学 | Microwave-Fenton unified all-in-one machine for treating organic chemical wastewater |
| CN103723873A (en) * | 2014-01-10 | 2014-04-16 | 福建省双旗山矿业有限责任公司 | Method for treating waste acid in acid-making with smelting gas |
| CN105540988A (en) * | 2016-01-15 | 2016-05-04 | 航天圣诺（北京）环保科技有限公司 | Effluent treatment technology and system based on combination of super magnetic separation and microwave energy technology |
| CN105540988B (en) * | 2016-01-15 | 2018-11-23 | 航天圣诺（北京）环保科技有限公司 | The waste water treatment process combined based on super Magneto separate and microwave energy technology |
| CN107777751A (en) * | 2016-08-29 | 2018-03-09 | 中国石油化工股份有限公司 | A kind of new method for handling nitropheneol waste water |
| CN106242136A (en) * | 2016-08-31 | 2016-12-21 | 浙江奇彩环境科技股份有限公司 | A kind of processing method containing pyridines waste water |
| CN106242136B (en) * | 2016-08-31 | 2019-06-11 | 浙江奇彩环境科技股份有限公司 | A kind of processing method of the waste water containing pyridines |
| CN107680704A (en) * | 2017-09-26 | 2018-02-09 | 西南科技大学 | A kind of method of microwave cooperating Fenton reagent fast degradation radioactive waste ion exchange resin |
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Application publication date: 20100707 |