CN107739084A - Enhanced processing method for high-concentration hardly-degradable agricultural chemicals waste water - Google Patents
Enhanced processing method for high-concentration hardly-degradable agricultural chemicals waste water Download PDFInfo
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- CN107739084A CN107739084A CN201711165784.3A CN201711165784A CN107739084A CN 107739084 A CN107739084 A CN 107739084A CN 201711165784 A CN201711165784 A CN 201711165784A CN 107739084 A CN107739084 A CN 107739084A
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- waste water
- agricultural chemicals
- chemicals waste
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- enhanced processing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/306—Pesticides
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The present invention relates to a kind of enhanced processing method for high-concentration hardly-degradable agricultural chemicals waste water, utilize Fenton ozone oxidation GC-MS, reach and efficiently remove CODcr and the effect decolourized, available for water pollution problems such as high, the big, difficult degradations of colourity of solution content of organics.By using Fenton and O3Between coupling, accelerate the mass-transfer efficiency of reaction, promote reaction system to produce more hydroxyl radical free radicals, greatly improve the oxidative degradation efficiency of organic matter, and caused Fe (OH) in course of reaction3It can be reused with strong adsorption-flocculation activity, then by pH regulations so that sludge quantity caused by system is reduced, and while improving CODcr clearance and decolorizing effect, can effectively reduce power consumption and H2O2Dosage, reduce cost.The present invention, it is simple to operate, catalytic degradation efficiency is high, had a good application prospect in high concentration hard-degraded organic waste water processing.
Description
Technical field
The present invention relates to a kind of enhanced processing method for high-concentration hardly-degradable agricultural chemicals waste water, can solve organic matter and contain
The water pollution problems such as amount is high, the big, difficult degradation of colourity, for water pollution process field.
Background technology
The one kind of agricultural chemicals waste water as high concentration hard-degraded organic waste water, intractability up to standard is larger, and reason is such
Waste water water is small, pollutant concentration is high, toxicity is big, salt is higher, is difficult to biodegradation, it is therefore necessary to using preconditioning technique and
Method, could effectively it deal carefully with.If these materials certainly will seriously pollute environment and threat with being not added with improvement to environmental emission
Human body health.Because advanced oxidization method rapid reaction is thorough, no selective, thus as pretreatment with larger
Advantage.Fenton's reaction is typical advanced oxidization method, can using hydrogen peroxide and ferrous ion reaction generation hydroxyl radical free radical
Quickly to remove the hardly degraded organic substance that conventional art can not remove.The advantages of Fenton reagent oxidizing process, is H2O2Decomposition rate
It hurry up, oxidation rate height, but due to a large amount of Fe2+Presence, H2O2Utilization rate it is not high, make organic pollutant degradation incomplete, and
Reaction must be carried out in acid condition, otherwise because separating out Fe (OH) 3Precipitate and make the Fe of addition2+Or Fe3+Failure, and it is molten
The neutralization of liquid also needs to consume substantial amounts of soda acid, is additionally treated in a manner to the extensive use that this height also restricts this method.It is in consideration of it, vast
Environmental science worker is directed to the improvement of this method, and Fenton process is substantially sent out forward along photochemistry and electrochemistry two lines
Exhibition.Electro-fenton process is utilized caused by electrochemical process, and the constant source as Fenton reagent, and both make immediately after producing
With and generate the hydroxyl radical free radical with high activity, organic matter is degraded, it is substantially exactly direct in electrolytic process
Generate Fenton reagent.Compared with traditional Fenton process, electro-fenton process has the advantages of it is unique to be not required to or need to only add a small amount of chemical drugs of people
Agent；Processing cost can be greatly lowered；Processing procedure cleans, and will not produce secondary pollution to water quality；It is easy to and other methods
With reference to providing an effective way for the comprehensive regulation of waste water.
Ozone can aoxidize most of organic matters, and particularly oxidation is difficult to the material degraded, and works well, but actually should
There can be the shortcomings of cost is high, and utilization rate is not high in.
The content of the invention
It is an object of the invention to for content of organics is high, colourity is high, is difficult to the agricultural chemicals waste waters such as biodegradation, water outlet
COD value is unable to reach the discharge standard of national regulation, and the catalytic efficiency of existing method for treating water is low, operating cost is high etc. asks
Topic, propose that Fenton-ozone catalytic GC-MS carrys out intensive treatment agricultural chemicals waste water, pass through O3And H2O2Caused high concentration, height
Current potential hydroxyl radical free radical, hardly degraded organic substance in high-concentration pesticide wastewater is decomposed, accelerates Fenton reaction rates, reduces electricity
Consumption, reach the effect for efficiently removing CODcr, can be used for the water pollutions such as high, the big, difficult degradation of colourity of solution content of organics and ask
Topic.
A kind of enhanced processing method for high-concentration hardly-degradable agricultural chemicals waste water, it is characterised in that utilize Fenton-smelly
Oxygen aoxidizes GC-MS, reaches and efficiently removes CODcr and the effect decolourized, can be used for solving content of organics is high, colourity is big,
The water pollution problems such as difficult degradation.
Specifically include following steps：In electrolysis unit, pending agricultural chemicals waste water is added, after adjusting pH, by necessarily rubbing
You are than input Fe2(SO4)3And H2O2, after-applied voltage is stirred, controls the flow velocity of circulating pump, then into Fenton system
It is passed through O3Air Exposure is carried out, controls O3Concentration, after a period of time, stop aeration and be powered, regulation system pH to neutrality, survey it
CODcr and percent of decolourization.
Described system pH is 2 ~ 4, electrolysis negative and positive extremely carbon electrode plate.
Described Fe2(SO4)3With H2O2Mol ratio be 1：（4~10）.
Described decomposition voltage is 5 ~ 15V, and electrolysis time is 30 ~ 60min.
Described O3Mass concentration be 1 ~ 3g/L, the ozonation aerated time is 20 ~ 40min.
In order to further improve the efficiency of Ozonation, the utilization rate of ozone is improved, reduces the running cost of ozone oxidation
With, while the removal efficiency to pollutant is further improved, the present invention proposes Fenton and O3Oxidation coupling, improve CODcr
While clearance, reduce the dosage of power consumption and ozone, this for high concentration, difficult degradation, difficult biochemical treatment waste water it is strong
Change to administer and a technology path that can be practical is provided.
By using Fenton and O3Between coupling, accelerate reaction mass-transfer efficiency, promote reaction system to produce
More hydroxyl radical free radicals, greatly improve the oxidative degradation efficiency of organic matter, and caused Fe (OH) in course of reaction3Have
Strong adsorption-flocculation activity, then can be reused by pH regulations so that sludge quantity caused by system is reduced, and improves CODcr
Clearance and decolorizing effect while, can effectively reduce power consumption and H2O2Dosage, reduce cost.Electricity of the present invention
Fenton- ozone oxidation GC-MSs, it is simple to operate, catalytic degradation efficiency is high, in high concentration hard-degraded organic waste water processing
Have a good application prospect.
The invention has the advantages that：
（1）Fenton proposed by the present invention-ozone oxidation GC-MS, utilizes Fenton and O3Interphase interaction, promote
Reaction system is produced more hydroxyl radical free radicals, greatly improve the oxidative degradation efficiency of organic matter, and produced in course of reaction
Raw Fe (OH)3It can be reused with strong adsorption-flocculation activity, then by pH regulations so that sludge quantity caused by system
Reduce.
（2）The method of intensive treatment agricultural chemicals waste water proposed by the present invention, due to the addition of molysite, improves electrical conductivity, leads
It is electrically strong, in combination with O3Air Exposure, can effectively improve the mass-transfer efficiency of reaction, accelerate reaction process, reduce power consumption and
H2O2 dosage, be advantageous to improve CODcr clearance and decolorizing effect.
（3）Fenton-ozone oxidation GC-MS of the present invention can be not only used for the processing of agricultural chemicals waste water, also can use
In the processing of other industrial wastewaters and contaminated natural water, there is larger application value.
Embodiment
By embodiment, the present invention is described further.
Embodiment 1
In electrolysis unit, the pending agricultural chemicals waste waters of 200ml are added, regulation pH is 3, is in molar ratio 1:8 add Fe2
(SO4)3And H2O2, it is 15V to be stirred after-applied voltage, controls the flow velocity of circulating pump, then O is passed through into Fenton system3
Air Exposure is carried out, controls O3Mass concentration is 1.5g/L, aeration aeration 30min, energization 60min, regulation system pH to neutrality,
The CODcr clearances and percent of decolourization for measuring agricultural chemicals waste water are respectively 92% and 98%.
Embodiment 2
In electrolysis unit, the pending agricultural chemicals waste waters of 200ml are added, regulation pH is 2, is in molar ratio 1:10 add Fe2
(SO4)3And H2O2, it is 10V to be stirred after-applied voltage, controls the flow velocity of circulating pump, then O is passed through into Fenton system3
Air Exposure is carried out, controls O3Mass concentration is 1.2g/L, aeration aeration 20min, energization 60min, regulation system pH to neutrality,
The CODcr clearances and percent of decolourization for measuring agricultural chemicals waste water are respectively 84.2% and 97.5%.
Embodiment 3
In electrolysis unit, the pending agricultural chemicals waste waters of 200ml are added, regulation pH is 3, is in molar ratio 1:6 add Fe2
(SO4)3And H2O2, it is 15V to be stirred after-applied voltage, controls the flow velocity of circulating pump, then O is passed through into Fenton system3
Air Exposure is carried out, controls O3Mass concentration is 1g/L, aeration aeration 30min, energization 30min, regulation system pH to neutrality, is surveyed
The CODcr clearances and percent of decolourization for obtaining agricultural chemicals waste water are respectively 88.7% and 98%.
Embodiment 4
In electrolysis unit, the pending agricultural chemicals waste waters of 200ml are added, regulation pH is 3, is in molar ratio 1:4 add Fe2
(SO4)3And H2O2, it is 10V to be stirred after-applied voltage, controls the flow velocity of circulating pump, then O is passed through into Fenton system3
Air Exposure is carried out, controls O3Mass concentration is 1.5g/L, aeration aeration 30min, energization 45min, regulation system pH to neutrality,
The CODcr clearances and percent of decolourization for measuring agricultural chemicals waste water are respectively 71.8% and 97%.
Claims (5)
1. a kind of enhanced processing method for high-concentration hardly-degradable agricultural chemicals waste water, it is characterised in that utilize Fenton-ozone
GC-MS is aoxidized, is comprised the following steps：In electrolysis unit, pending agricultural chemicals waste water is added, after adjusting pH, by necessarily rubbing
You are than input Fe2(SO4)3And H2O2, after-applied voltage is stirred, controls the flow velocity of circulating pump, then into Fenton system
It is passed through O3Air Exposure is carried out, controls O3Concentration, after a period of time, stop aeration and be powered, regulation system pH to neutrality, survey it
CODcr and percent of decolourization.
2. it is used for the enhanced processing method of high-concentration hardly-degradable agricultural chemicals waste water according to claim 1, it is characterised in that described
System pH be 2 ~ 4, electrolysis negative and positive extremely carbon electrode plate.
3. it is used for the enhanced processing method of high-concentration hardly-degradable agricultural chemicals waste water according to claim 1, it is characterised in that described
Fe2(SO4)3With H2O2Mol ratio be 1：（4~10）.
4. it is used for the enhanced processing method of high-concentration hardly-degradable agricultural chemicals waste water according to claim 1, it is characterised in that described
Decomposition voltage be 5 ~ 15V, electrolysis time is 30 ~ 60min.
5. it is used for the enhanced processing method of high-concentration hardly-degradable agricultural chemicals waste water according to claim 1, it is characterised in that described
O3Mass concentration be 1 ~ 3g/L, the ozonation aerated time is 20 ~ 40min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165784.3A CN107739084A (en) | 2017-11-21 | 2017-11-21 | Enhanced processing method for high-concentration hardly-degradable agricultural chemicals waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711165784.3A CN107739084A (en) | 2017-11-21 | 2017-11-21 | Enhanced processing method for high-concentration hardly-degradable agricultural chemicals waste water |
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| CN107739084A true CN107739084A (en) | 2018-02-27 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145274A (en) * | 2013-03-15 | 2013-06-12 | 中北大学 | Method and device for treating wastewater by advanced oxidation process |
| CN103991989A (en) * | 2014-06-11 | 2014-08-20 | 高前松 | Method for treating organic wastewater |
| CN104787941A (en) * | 2015-04-07 | 2015-07-22 | 凯天环保科技股份有限公司 | Advanced oxidative coupling device and process for treating organic wastewater difficult to degrade |
| CN106242018A (en) * | 2016-08-31 | 2016-12-21 | 无锡中天固废处置有限公司 | A kind of COD degradation efficiency improving waste water and the method for biochemical property |
-
2017
- 2017-11-21 CN CN201711165784.3A patent/CN107739084A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103145274A (en) * | 2013-03-15 | 2013-06-12 | 中北大学 | Method and device for treating wastewater by advanced oxidation process |
| CN103991989A (en) * | 2014-06-11 | 2014-08-20 | 高前松 | Method for treating organic wastewater |
| CN104787941A (en) * | 2015-04-07 | 2015-07-22 | 凯天环保科技股份有限公司 | Advanced oxidative coupling device and process for treating organic wastewater difficult to degrade |
| CN106242018A (en) * | 2016-08-31 | 2016-12-21 | 无锡中天固废处置有限公司 | A kind of COD degradation efficiency improving waste water and the method for biochemical property |
Non-Patent Citations (2)
| Title |
|---|
| 吴昊 等: "Fenton联合臭氧氧化预处理有机磷农药废水研究", 《山东化工》 * |
| 朱静平: "《污水处理工程实验》", 31 January 2010, 成都：西南交通大学出版社 * |
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