CN1270979C - Method and apparatus for processing high-concentration organic waste water by supersonic wave - Google Patents
Method and apparatus for processing high-concentration organic waste water by supersonic wave Download PDFInfo
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- CN1270979C CN1270979C CN 200410027516 CN200410027516A CN1270979C CN 1270979 C CN1270979 C CN 1270979C CN 200410027516 CN200410027516 CN 200410027516 CN 200410027516 A CN200410027516 A CN 200410027516A CN 1270979 C CN1270979 C CN 1270979C
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Abstract
The present invention relates to a method for treating organic waste water with high consistency by using ultrasonic waves, which comprises the following steps: step 1, organic waste water with high consistency is inputted into an aeration zone of a device and aerated by exerting ultrasonic waves; step 2, the aerated waste water enters a main reaction zone of the device for ultrasonic degradation, and simultaneously a Fenton system is formed by the coupling of ultrasonic waves and atomic state iron for Fenton degradation; step 3, the waste water after degradation in the main reaction zone enters a coagulating sedimentation zone of the device and is carried out a coagulation treatment by using nascent state iron ions, the water after coagulation is expelled out from a water outlet pipe at the lateral surface of the coagulating sedimentation zone, and the sediments are expelled out from a mud pipe at the bottom of the coagulating sedimentation zone. In the present invention, a micro aeration-ultrasound-iron-Fenton system is formed by the coupling of soft ultrasound, aeration and atomic state iron, the system can quickly, effectively, stably reduce the toxicity of organic waste water with high consistency, improve the biodegradability of organic waste water with high consistency and even directly materialize organic waste water with high consistency.
Description
Technical field
The present invention relates to the ultrasonic wave water technology, specifically is a kind of method and device of ultrasonication high concentrated organic wastewater.
Background technology
China's discharged volume of industrial waste water reaches tens billion of tons, mainly be distributed in industries such as chemical industry, metallurgy, coking, light industry, food, wherein considerable part is a high concentration hard-degraded organic waste water, and these waste water are difficult to because containing poisonous harmful macromolecular substance remove for biochemical method.
The method of handling high concentrated organic wastewater at present has chemical oxidization method, solvent extration, absorption method, burning method, photocatalytic method, reinforcement biochemical treatment process etc., and these method costs are all very high, and water running expense per ton reaches tens of units.High expense makes a large amount of high concentration hard-degraded organic waste waters can not get effectively handling and discharges, environment has been caused serious pollution.Its improvement technology is improved in the improvement of research high concentrated organic wastewater, is very urgent task.
Utilizing the chemical pollutant in the ultrasonic degradation water is the novel water technology that development in recent years is got up, it integrates the characteristics of multiple water treatment technology such as high-level oxidation technology, burning, supercritical water oxidation, has characteristics such as reaction conditions gentleness, speed be fast, applied widely.It can unite use separately or with other technologies, is particularly useful for the organic pollutant of difficult degradation, has very big development potentiality.
Usually need aeration in the treatment of Organic Wastewater, because the solvability of air is very poor, aeration efficient has only 10%-20% usually, thereby causes higher power consumption and gas consumption, and the aeration poor effect.
Summary of the invention
The objective of the invention is to overcome the above-mentioned deficiency of traditional treatment of Organic Wastewater technology, a kind of method and apparatus of ultrasonication high concentrated organic wastewater is provided.
The method of ultrasonication high concentrated organic wastewater of the present invention may further comprise the steps:
A, high concentrated organic wastewater is imported aeration zone in the reaction unit, the some ultrasonic transducers that are provided with by bottom, described aeration zone apply ultrasonic wave waste water are carried out little aeration;
B, the main reaction region that makes the waste water behind the aeration enter reaction unit, this main reaction region is positioned at aeration zone one side, the water side of main reaction region is provided with the coagulating sedimentation district, between aeration zone and the main reaction region, all being crisscross arranged between main reaction region and the coagulating sedimentation district provides the iron plate of atomic state iron, the some ultrasonic transducers that are provided with bottom described main reaction region apply ultrasonic wave the waste water that flows through this district are carried out ultrasonic degradation, form the Fenton system by ultrasonic-atomic state iron coupling simultaneously, carry out the Fenton degraded;
C, the waste water after the main reaction region degraded enter the coagulating sedimentation district of reaction unit, the nascent state iron ion carries out coagulating treatment to waste water, remove suspended substance, colourity, bromine flavor in the waste water, the water behind the coagulation is lateral rising pipe discharge from the coagulating sedimentation district, and throw out is discharged from the shore pipe of bottom.
Among the above-mentioned steps b, the method that the waste water behind the aeration carries out ultrasonic degradation in main reaction region is: the waste water to input reaction unit main reaction region carries out ultrasonic irradiation, and the frequency of ultrasonic scope is 20～300kHz, and sound intensity scope is 0.1～10w/cm
2, irradiation time is 0.5～30 minute.
Among the above-mentioned steps b, the method that the waste water behind the aeration carries out the Fenton degraded in main reaction region is: atomic state iron generates ferrous ion under the effect of ultrasonic wave and oxygen; Ferrous ion is decomposition of hydrogen peroxide under the ultrasonic wave effect, produces hydroxyl radical free radical and iron ion, forms the Fenton system; Organism generation oxidizing reaction in hydroxyl radical free radical and the waste water realizes organic degraded.
A kind of device of ultrasonication high concentrated organic wastewater, comprise container and controller, described container intracavity from left to right sets gradually aeration zone, at least one main reaction region and coagulating sedimentation district, between aeration zone and the main reaction region, iron plate all is crisscross arranged between main reaction region and the coagulating sedimentation district, aeration zone and main reaction region bottom all are provided with the some ultrasonic transducers by controller control, aeration zone one side is provided with water inlet pipe, coagulating sedimentation district one side sets out water pipe, and bottom, coagulating sedimentation district is provided with shore pipe.Bottom, coagulating sedimentation district at described container also can be provided with a small amount of ultrasonic transducer.
The present invention utilizes flexible ultrasonic ripple, aeration, atomic state iron coupling, form little aeration-ultrasonic-iron-Fenton system, the toxicity of reduction high concentrated organic wastewater that can be quick, effective, stable, the biodegradability of raising high concentrated organic wastewater, even directly materialization.Its beneficial effect is as follows:
1, utilizes hyperacoustic cavitation effect, make organism in the waste water in reactions such as focus generation chemical bond rupture, water burning, pyrolytic decomposition, supercritical water oxidation, free-radical oxidns.These effects add that the particle vibration in the sound field, the secondary ripple of deriving etc. provide additive method unapproachable multiple degradation pathway for organism.
2, under the effect of ultrasonic wave and oxygen, atomic state iron forms ferrous ion fast.Ferrous ion is efficient decomposition of hydrogen peroxide under ultrasonic wave, forms the Fenton system, generates great amount of hydroxy group free radical and iron ion, has avoided having improved hyperacoustic chemical effect greatly from conjunction with the consumption to hydroxyl radical free radical.The iron ion of synkaingenesis attitude is a coagulant, can remove suspended substance in the waste water, colourity, bromine flavor etc. fast.
3, hyperacoustic Mechanical Crushing effect can evenly be crushed to micron order with bubble, thereby has improved aeration efficient greatly, has reduced power consumption and gas consumption.
Description of drawings
Fig. 1 is the structural representation of exemplary embodiments of the present invention;
Fig. 2 is Fig. 1 embodiment front elevational schematic.
Embodiment
Be described further below in conjunction with the embodiment accompanying drawing.
The device of ultrasonication high concentrated organic wastewater as shown in Figure 1, 2, comprise stainless steel vessel 2 and ultrasonic controller 10, container 2 inner chambers from left to right set gradually an aeration zone 4, two main reaction region 6 and coagulating sedimentation districts 7,4 left sides, aeration zone are provided with water inlet pipe 1,7 right sides, coagulating sedimentation district set out water pipe 9, and 7 bottoms, coagulating sedimentation district are provided with shore pipe 8.Described aeration zone 4, main reaction region 6 and 7 bottoms, coagulating sedimentation district all are provided with the some ultrasonic transducers 5 by ultrasonic controller 10 controls, the ultrasonic transducer quantity of coagulating sedimentation district bottom is less than the ultrasonic transducer quantity of aeration zone or main reaction region bottom, and coagulating sedimentation district ultrasonic transducer is provided with and lessly can guarantees that current are steady.Between main reaction region 6 and the aeration zone 4, between two main reaction region 6, iron plate 3 all is crisscross arranged between main reaction region 6 and the coagulating sedimentation district 7.
Said vesse is preferably stainless steel vessel, also can adopt the container of other internal corrosion, uses in the long-term immersion water guaranteeing.Ultrasonic transducer can be piezoelectric ceramic piece, WATER REPELLENT.The adjustment in ultrasonic frequency, the sound intensity and irradiation or treatment time is finished automatically by ultrasonic controller 10 in the treatment of Organic Wastewater process, and the frequency of ultrasonic scope is 20～300kHz usually, and sound intensity scope is 0.1～10w/cm
2, irradiation or treatment time can be 0.5～30 minute.This apparatus structure is simple, and volume is little, and is stable.
The bottom of above-mentioned aeration zone is provided with ultrasonic transducer, and waste water carries out aeration in the aeration zone, and hyperacoustic Mechanical Crushing effect can evenly be crushed to micron order with bubble, forms little aeration, has greatly improved aeration efficient, has reduced power consumption and gas consumption.
The following describes and adopt the treating processes of device shown in Figure 1 alkaline straw-pulp black liquid:
A, with the aeration zone 4 of high density alkaline process straw pulp black liquor by water inlet pipe 1 input stainless steel vessel 2, apply ultrasonic wave this straw pulp black liquor carried out little aeration, the ultrasonic frequency that wherein applies is that 20kHz, the sound intensity are 2w/cm
2, the ultrasonic wave aeration time is 5 minutes.
Also can adopt frequency is that 200kHz, the sound intensity are 8w/cm
2Ultrasonic wave, aeration 2 minutes.
Alkaline straw-pulp black liquid behind b, the aeration enters the main reaction region 6 of container 2, and it is that 20kHz, the sound intensity are 2w/cm that the ultrasonic transducer 5 by this district produces frequencies
2Ultrasonic wave, alkaline straw-pulp black liquid in the main reaction region 6 is carried out about 10 minutes ultrasonic irradiations, ultrasonic wave causes cavitation in water, produce moment localized hyperthermia's hyperbaric environment (focus) of about 4000K and 100MPa, the speed with about 110m/s produces microjet and the shockwave with intense impact power simultaneously.Water molecules reaches supercritical state at focus, and resolves into hydroxyl radical free radical, super oxygen base etc., and hydroxyl radical free radical is the strongest oxygenant of being found at present.Organism is in reactions such as focus generation chemical bond rupture, water burning, pyrolytic decomposition, supercritical water oxidation, free-radical oxidns.These effects add the particle vibration in the sound field, the secondary ripple of deriving etc. for organism provides additive method unapproachable multiple degradation pathway, realize organic ultrasonic degradation; Atomic state iron is under the effect of ultrasonic wave and oxygen simultaneously, generate ferrous ion fast, ferrous ion is decomposition of hydrogen peroxide under the ultrasonic wave effect, produce hydroxyl radical free radical and iron ion, form the Fenton system, organism generation oxidizing reaction in hydroxyl radical free radical and the alkaline straw-pulp black liquid realizes organic Fenton degraded.
The described alkaline straw-pulp black liquid that enters the reaction unit main reaction region is carried out ultrasonic irradiation, and also can adopt frequency is that 250kHz, the sound intensity are 6w/cm
2Ultrasonic wave, irradiation 5 minutes.
C, the alkaline straw-pulp black liquid after main reaction region 6 degradeds enter the coagulating sedimentation district 7 of container 2, the nascent state iron ion carries out coagulating treatment to the alkaline straw-pulp black liquid in the coagulating sedimentation district 7, suspended substance in the removal alkaline straw-pulp black liquid, colourity, bromine flavor etc., water behind the coagulation is discharged from the rising pipe 9 on 7 right sides, coagulating sedimentation district, and throw out is discharged from the shore pipe 8 of 7 bottoms, coagulating sedimentation district.
After the process aforesaid method was handled alkaline straw-pulp black liquid, the comprehensive toxicity of alkaline straw-pulp black liquid obviously descended, and biodegradability improves 50%, and the COD clearance improves 30%.
Claims (6)
1, a kind of method of ultrasonication high concentrated organic wastewater is characterized in that may further comprise the steps:
A, high concentrated organic wastewater is imported aeration zone in the reaction unit, the some ultrasonic transducers that are provided with by bottom, described aeration zone apply ultrasonic wave waste water are carried out little aeration;
B, the main reaction region that makes the waste water behind the aeration enter reaction unit, this main reaction region is positioned at aeration zone one side, the water side of main reaction region is provided with the coagulating sedimentation district, between aeration zone and the main reaction region, all being crisscross arranged between main reaction region and the coagulating sedimentation district provides the iron plate of atomic state iron, the some ultrasonic transducers that are provided with bottom described main reaction region apply ultrasonic wave the waste water that flows through this district are carried out ultrasonic degradation, form the Fenton system by ultrasonic-atomic state iron coupling simultaneously, carry out the Fenton degraded;
C, the waste water after the main reaction region degraded enter the coagulating sedimentation district of reaction unit, and the nascent state iron ion carries out coagulating treatment to waste water, and the water behind the coagulation is lateral rising pipe discharge from the coagulating sedimentation district, and throw out is discharged from the shore pipe of bottom.
2, according to the method for the described ultrasonication high concentrated organic wastewater of claim 1, it is characterized in that among the step b, the method that waste water behind the aeration carries out ultrasonic degradation in main reaction region is: the described waste water that enters the reaction unit main reaction region is carried out ultrasonic irradiation, the frequency of ultrasonic scope is 20～300K Hz, and sound intensity scope is 0.1～10w/cm
2, irradiation time is 0.5～30 minute.
3,, it is characterized in that among the step b that the method that the waste water behind the aeration carries out the Fenton degraded in main reaction region is as follows according to the method for the described ultrasonication high concentrated organic wastewater of claim 1:
Atomic state iron generates ferrous ion under the effect of ultrasonic wave and oxygen; Ferrous ion is decomposition of hydrogen peroxide under the ultrasonic wave effect, produces hydroxyl radical free radical and iron ion, forms the Fenton system; Organism generation oxidizing reaction in hydroxyl radical free radical and the waste water realizes organic degraded.
4, a kind of device of ultrasonication high concentrated organic wastewater, comprise container and controller, it is characterized in that: described container intracavity from left to right sets gradually aeration zone, at least one main reaction region and coagulating sedimentation district, between aeration zone and the main reaction region, iron plate all is crisscross arranged between main reaction region and the coagulating sedimentation district, aeration zone and main reaction region bottom all are provided with the some ultrasonic transducers by controller control, aeration zone one side is provided with water inlet pipe, coagulating sedimentation district one side sets out water pipe, and bottom, coagulating sedimentation district is provided with shore pipe.
5, the device of ultrasonication high concentrated organic wastewater according to claim 4, it is characterized in that: the bottom, coagulating sedimentation district at described container is provided with ultrasonic transducer, and this ultrasonic transducer quantity is less than the ultrasonic transducer quantity of aeration zone or main reaction region bottom.
6, the device of ultrasonication high concentrated organic wastewater according to claim 4 is characterized in that: described container is a stainless steel vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200410027516 CN1270979C (en) | 2004-06-04 | 2004-06-04 | Method and apparatus for processing high-concentration organic waste water by supersonic wave |
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| CN 200410027516 CN1270979C (en) | 2004-06-04 | 2004-06-04 | Method and apparatus for processing high-concentration organic waste water by supersonic wave |
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| CN1270979C true CN1270979C (en) | 2006-08-23 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102689954A (en) * | 2011-03-21 | 2012-09-26 | 长春联创水质工程有限公司 | Method for removing fluorine, ferrum and manganese in underground water by composite oxidation coagulant agent and ultrasonic waves |
| CN102557295A (en) * | 2011-12-23 | 2012-07-11 | 西南大学 | Method for removing antibiotic and hormone in livestock and poultry breeding wastewater |
| CN103641275B (en) * | 2013-12-13 | 2016-01-06 | 广西大学 | The treatment process of brewing industry sewage and equipment |
| CN103840072B (en) * | 2014-01-26 | 2016-06-22 | 江苏天楹之光光电科技有限公司 | A kind of method for packing of electroluminescent device |
| CN104355487A (en) * | 2014-10-27 | 2015-02-18 | 无锡伊佩克科技有限公司 | Ecological sewage treatment method |
| CN107321970B (en) * | 2017-06-06 | 2019-03-08 | 南京航空航天大学 | A kind of processing technology of the nanosheet composite material rolled using ultrasound |
| CN109928537A (en) * | 2017-12-19 | 2019-06-25 | 煤炭科学技术研究院有限公司 | The method and device of UV/Fenton oxidation processes organic wastewater |
| CN108911301B (en) * | 2018-06-27 | 2021-08-03 | 江苏大学 | Modularized organic wastewater treatment system |
| CN113651476A (en) * | 2021-09-15 | 2021-11-16 | 昆明理工大学 | Wastewater treatment equipment based on Fenton-like-ultrasonic combined coagulating sedimentation method |
| CN115340232A (en) * | 2022-08-18 | 2022-11-15 | 哈尔滨工业大学（威海） | Organic wastewater treatment device and method |
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