CN105540815A - Heterogeneous Fenton reaction apparatus for treating industrial waste water and treatment method - Google Patents
Heterogeneous Fenton reaction apparatus for treating industrial waste water and treatment method Download PDFInfo
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- CN105540815A CN105540815A CN201510912535.0A CN201510912535A CN105540815A CN 105540815 A CN105540815 A CN 105540815A CN 201510912535 A CN201510912535 A CN 201510912535A CN 105540815 A CN105540815 A CN 105540815A
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- storage tank
- treatment
- tank
- fixed bed
- catalytic reactor
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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
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention specifically relates to a heterogeneous Fenton reaction apparatus for treating industrial waste water and a treatment method, belonging to the technical field of environmental protection. The apparatus comprises a hydrogen peroxide storage tank, a waste liquid storage tank, a raw material liquid blending tank, a fixed bed catalytic reactor, a treatment fluid storage tank, a sewage detection system, a circulating pump, a flowmeter, etc. Hydrogen peroxide and waste liquid respectively in the hydrogen peroxide storage tank and the waste liquid storage tank enter the raw material liquid blending tank for mixing; then the obtained mixture enters the fixed bed catalytic reactor under the control of the flowmeter for a Fenton reaction; and the sewage detection system carries out detection, sewage reaching the standard is directly discharged from the treatment fluid storage tank, and waste water not reaching the standard is circulated to the raw material liquid blending tank via the circulating pump for retreatment. The apparatus can realize serialization, automation and high-efficiency implementation of the Fenton reaction in waste water treating process, effectively reduces the COD value of the industrial waste water and allows the industrial waste water to reach direct discharge standard.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to a kind of device of fixed bed Fenton (Fenton) catalyzed reaction for Industrial Wastewater Treatment.
Background technology
Organic pollutant is one of pollutent main in environment, and the organism of especially persistence and difficult degradation, it is known together to the harm of HUMAN HEALTH.Therefore, the degradation treatment containing the trade effluent of organic pollutant is significant.Fenton (Fenton) oxidation style is a kind of typical high-level oxidation technology.The hydroxyl radical free radical (OH) produced in its oxidising process, can organic pollutant effectively in degrading waste water as a kind of powerful oxygenant.
Fixed-bed reactor are filled with solid catalyst or solid reactant in order to realize a kind of reactor of heterogeneous reaction process.Fixed bed catalyst is usually in particulate state, and particle diameter about 2 ~ 15mm, is piled into the bed of certain altitude (or thickness).Bed transfixion, fluid is reacted by bed.The difference of it and fluidized-bed reactor and moving-burden bed reactor is that solid particulate remains static.Fixed-bed reactor are mainly used in realizing gas-solid catalysis, as ammonia synthesis converter, sulfurous gas contact oxidation device, hydrocarbon steam converting furnace etc.The fixed-bed reactor that can be used for Fenton's reaction have the following advantages:
1, available a small amount of catalyzer and less reactor volume obtain larger process waste water ability;
2, the fixed-bed reactor structure for Fenton's reaction is simple, and catalytic mechanical wearing and tearing are little, catalyzer long service life, and regenerates and reclaim easy;
3, the fixed bed reaction process operation for Fenton's reaction is convenient, turndown ratio is large, can use continuously the long period.
Heterogeneous Fenton catalyst system effectively can solve the problem of molysite excessive loss and the aftertreatment of iron mud, thus obtains increasing concern and research.
Summary of the invention
The object of the present invention is to provide a kind of efficient, energy-conservation, simple and easy, safe heterogeneous Fenton's reaction device for the treatment of trade effluent and treatment process.
Heterogeneous Fenton's reaction device for Industrial Wastewater Treatment provided by the invention, comprising: waste tank, Hydrogen peroxide storage, stock liquid mixing is filled with, for loading the fixed bed catalytic reactor of heterogeneous shaping fenton catalyst, treatment solution storage tank, sewage detection system, recycle pump, under meter; Wherein, the outlet conduit of waste tank and Hydrogen peroxide storage mixes to fill with stock liquid and is communicated with, waste liquid in waste tank and the hydrogen peroxide premix in Hydrogen peroxide storage together incoming stock liquid mixing are filled with, and the outlet that stock liquid mixing is filled with is connected by the entrance of under meter with fixed bed catalytic reactor lower end; Sewage detection Operation system setting in the exit of fixed bed catalytic reactor upper end, and is connected with treatment solution storage tank; Recycle pump is arranged between treatment solution storage tank and stock liquid mixing tank; Treatment solution storage tank is provided with a discharge outlet, for discharging qualified treatment solution; Defective treatment solution, by the incoming stock liquid mixing tank for the treatment of solution outlet, carries out circular treatment.
In the present invention, described fixed bed catalytic reactor can be one stage catalyzing reactor composition, also can be made up of 2-5 multistage catalytic reactors in series, specifically determine as required.It can be such as 2 grades, 3 grades etc.2 grades of diagrams are given in embodiment.
Above-mentioned sewage detection system 7 is COD determinator.
The present invention also provides said apparatus for the method for Industrial Wastewater Treatment, and concrete steps are:
Trade effluent in waste tank and the superoxol in Hydrogen peroxide storage are carried out pre-mixing in stock liquid mixing tank, and the pH controlling mixed solution is adjusted to 6 ~ 8.
Regulate mixed solution to enter the flow of fixed bed catalytic reactor by under meter, make mixed solution be 30s ~ 60min in the residence time of beds.
Mixed solution enters from fixed bed catalytic reactor lower port, and adverse current, through beds, is discharged from upper port, entered treatment solution storage tank, through sewage detection systems axiol-ogy, meet the treatment solution of discharging standards, directly discharge from the discharge outlet for the treatment of solution storage tank; By recycle pump, stock liquid storage tank is circulated to for the treatment solution meeting discharging standards, carries out reprocessing.
Heterogeneous shaping fenton catalyst is loaded in described fixed bed catalytic reactor.
In the present invention, described mixed solution without the need to through interchanger heating, at room temperature (<30
oc) mix.
In the present invention, the concentration of described superoxol is 40-60 times of the initial COD value of trade effluent, preferably 50 times.
Device involved in the present invention can realize Fenton's reaction in the serialization of During Industrial Wastewater Treatment Process, automatization, high efficiency, can effectively reduce the COD value in trade effluent, reach direct emission standard.The invention solves the problem of iron flocculation in homogeneous phase Fenton's reaction system, avoid the last handling process of high flow rate.Meanwhile, continuous circulation process adds the scope of application of device, greatly reduces processing cost, and the treatment effect of waste water is also improved significantly.
Accompanying drawing explanation
Fig. 1 is that the heterogeneous anti-Fenton of the fixed bed catalytic reactors composition of 2 grades of series connection answers the schematic diagram of continuous apparatus.
Number in the figure: 1: Hydrogen peroxide storage, 2: waste tank, 3: stock liquid mixing tank, 4: the first fixed bed catalytic reactors, 5: treatment solution storage tank, 6: the second fixed bed catalytic reactors, 7: sewage detection system, 8: recycle pump, 9: under meter.
Embodiment
Embodiment 1:
Process trade effluent takes from the waste water that certain petrochemical enterprise discharges, and COD concentration (mg/L) is about 800mg/L.
The concentration (mg/L) of superoxol is defined as 50 times of the initial COD concentration (mg/L) (800mg/L) of trade effluent.
Hydrogen peroxide mixes at stock liquid mixing tank with trade effluent, regulates pH to 6 ~ 8.
Regulate mixed solution to enter the flow of fixed bed catalytic reactor by under meter 9, thus control mixed solution is 1min in the residence time of beds 4, waste water is through hydrogen-catalyst reactor 4 upper end inflow catalyst reactor 6.
Mixed solution enters from fixed bed catalytic reactor 6 lower end, and adverse current, through beds, is discharged from upper end.
After the waste water inflow treatment solution storage tank that fixed bed catalytic reactor top is flowed out, through the quality inspection of sewage detection system, examination COD concentration (mg/L) is 400mg/L, not yet meet discharging standards, therefore be circulated to stock liquid storage tank by recycle pump 8, carry out reprocessing, after third time circulation, detecting COD concentration (mg/L) is 100mg/L, reaches emission standard.
Claims (3)
1. the heterogeneous Fenton's reaction device for Industrial Wastewater Treatment, it is characterized in that, comprise: waste tank, Hydrogen peroxide storage, stock liquid mixing is filled with, for loading the fixed bed catalytic reactor of heterogeneous shaping fenton catalyst, treatment solution storage tank, sewage detection system, recycle pump, under meter; Wherein, the outlet conduit of waste tank and Hydrogen peroxide storage mixes to fill with stock liquid and is communicated with, waste liquid in waste tank and the hydrogen peroxide premix in Hydrogen peroxide storage together incoming stock liquid mixing are filled with, and the outlet that stock liquid mixing is filled with is connected by the entrance of under meter with fixed bed catalytic reactor lower end; Sewage detection Operation system setting in the exit of fixed bed catalytic reactor upper end, and is connected with treatment solution storage tank; Recycle pump is arranged between treatment solution storage tank and stock liquid mixing tank; Treatment solution storage tank is provided with a discharge outlet, for discharging qualified treatment solution; Defective treatment solution, by the incoming stock liquid mixing tank for the treatment of solution outlet, carries out circular treatment.
2. heterogeneous Fenton's reaction device as claimed in claim 1, is characterized in that, described fixed bed catalytic reactor is the fixed bed catalytic reactor of 2 ~ 5 grades of series connection.
3. device as claimed in claim 1 for the treatment of a method for industrial waste water, it is characterized in that, concrete institute step is:
(1) trade effluent in waste tank and the superoxol in Hydrogen peroxide storage are carried out pre-mixing in stock liquid mixing tank, the pH controlling mixed solution is adjusted to 6 ~ 8;
(2) regulate mixed solution to enter the flow of fixed bed catalytic reactor by under meter, make mixed solution be 30s ~ 60min in the residence time of beds;
(3) mixed solution enters from fixed bed catalytic reactor lower port, and adverse current, through beds, is discharged from upper port, entered treatment solution storage tank, through sewage detection systems axiol-ogy, meet the treatment solution of discharging standards, directly discharge from the discharge outlet for the treatment of solution storage tank; By recycle pump, stock liquid storage tank is circulated to for the treatment solution meeting discharging standards, carries out reprocessing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510912535.0A CN105540815A (en) | 2015-12-11 | 2015-12-11 | Heterogeneous Fenton reaction apparatus for treating industrial waste water and treatment method |
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| CN201510912535.0A CN105540815A (en) | 2015-12-11 | 2015-12-11 | Heterogeneous Fenton reaction apparatus for treating industrial waste water and treatment method |
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| CN105540815A true CN105540815A (en) | 2016-05-04 |
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| CN201510912535.0A Pending CN105540815A (en) | 2015-12-11 | 2015-12-11 | Heterogeneous Fenton reaction apparatus for treating industrial waste water and treatment method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277544A (en) * | 2016-09-26 | 2017-01-04 | 四川环能德美科技股份有限公司 | A kind of purification process technique of polluted surface water body |
| CN114291920A (en) * | 2021-11-26 | 2022-04-08 | 岭澳核电有限公司 | Method for treating hydrazine-containing waste liquid of nuclear power station |
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| US20060076299A1 (en) * | 2004-10-08 | 2006-04-13 | The Hong Kong University Of Science And Technology | Synthesis of bentonite clay-based iron nanocomposite and its use as a heterogeneous photo fenton catalyst |
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| CN114291920A (en) * | 2021-11-26 | 2022-04-08 | 岭澳核电有限公司 | Method for treating hydrazine-containing waste liquid of nuclear power station |
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Application publication date: 20160504 |