CN205222876U - Multistage fenton processing apparatus of high COD waste water of high salt - Google Patents
Multistage fenton processing apparatus of high COD waste water of high salt Download PDFInfo
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- CN205222876U CN205222876U CN201521010745.2U CN201521010745U CN205222876U CN 205222876 U CN205222876 U CN 205222876U CN 201521010745 U CN201521010745 U CN 201521010745U CN 205222876 U CN205222876 U CN 205222876U
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Abstract
The utility model discloses a multistage fenton processing apparatus of high COD waste water of high salt, include: multistage fenton processing unit, middle pond, active carbon filter equipment and the clean water basin connected in order through the pipeline, wherein fenton processing unit at different levels all include: the fenton oxidation tower connected in order through the pipeline is in, and flocculating reaction device and centrifugal dehydration device, middle pond is the water inlet intercommunication of the pipeline through being equipped with the exteenal reflux pump and one -level fenton processing unit's fenton oxidation tower still, and middle pond is still through pipeline and clean water basin intercommunication. The utility model discloses can handle high salinity organic pollutants surface water, satisfy production and environmental protection requirement.
Description
Technical field
The utility model is about one high salt high-COD waste water treatment unit.More particularly, be multistage Fenton treatment unit about a kind of high COD saltcake lake water.
Background technology
In recent years, under the support of national policy and resource, NORTHWEST CHINA each province establishes a large amount of industrial bases, comprises Coal Chemical Industry, petrochemical industry etc.Due to environmental protection facility build after and the backwardness for the treatment of technology, what most of industrial park sewage did not have disposes to appropriate process.A large amount of saliferous organic industrial sewages after treatment, do not reach the oxidation pond facility etc. that corresponding emission standard just enters natural water or builds temporarily, serious harm is brought to neighbouring natural water and underground water clean and safe, causes comparatively severe social influence.Along with time lapse and moisture evaporate, the salinity in water body is accumulated further, even forms closely saturated mirabilite lake (as rising mirabilite lake in lattice), brings higher difficulty to process organic in water body.Therefore, economical and effective, startup rapidly high salt high-COD waste water process disposing technique easy to operate in the urgent need to one, carry out process up to standard to the difficult waste water of high salt height COD of existing and existing discharge, with the demand of satisfied production, life and environmental protection.
Utility model content
In order to solve the problems of the technologies described above, the utility model provides a kind of device and the technique that can carry out effectively process to the high concentration COD in nearly saturated high-salt wastewater, to reach emission request.
In the utility model, high salt high-COD waste water refers to that sodium chloride salt or sodium sulfate salt are close to polluted water that is saturated, COD content >=10000mg/L.
The multistage Fenton treatment unit of high salt high-COD waste water that the utility model provides, comprising: the multistage Fenton processing unit, intermediate pool, active carbon filtering device and the clean water basin that are connected in turn by pipeline;
Wherein Fenton processing unit at different levels includes: the Fenton oxidation tower connected in turn by pipeline, in and flocculation reaction device and centrifugal dehumidifier;
Intermediate pool is also communicated with by the water inlet of the Fenton oxidation tower of the pipeline with one-level Fenton processing unit that are provided with external reflux pump, and intermediate pool is also communicated with clean water basin by pipeline.
As optimal technical scheme, described clean water basin are connected with the backwashing water entrance of active carbon filtering device by back flushing pipeline, and the backwashing water outlet of active carbon filtering device is communicated with flocculation reaction device with last step Fenton processing unit by water discharge line.
As optimal technical scheme, in Fenton processing unit at different levels, include the neutralizing well be communicated with and flocculation reaction groove with flocculation reaction device; The water outlet of the Fenton oxidation tower in Fenton processing unit at different levels is communicated with by the water inlet of pipeline with the neutralizing well in this Fenton processing unit; The water outlet of the flocculation reaction groove in Fenton processing unit at different levels is communicated with centrifugal dehumidifier in this Fenton processing unit by pipeline.
As optimal technical scheme, described clean water basin are connected with the backwashing water entrance of active carbon filtering device by back flushing pipeline, and the backwashing water outlet of active carbon filtering device is communicated with the flocculation reaction groove of flocculation reaction device with last step Fenton processing unit by water discharge line.
As optimal technical scheme, the above-mentioned multistage Fenton treatment unit of high salt high-COD waste water, also comprise the alkaline medicament adding device of neutralization and flocculant adding apparatus, neutralize alkaline medicament adding device to be communicated with the neutralizing well in Fenton processing unit at different levels by pipeline, flocculant adding apparatus is communicated with the neutralizing well in Fenton processing unit at different levels by pipeline.
As optimal technical scheme, the neutralizing well inner bottom part in Fenton processing unit at different levels is equipped with aerating apparatus, and aerating apparatus is connected with blower fan; Whipping appts is equipped with in flocculation reaction groove in Fenton processing unit at different levels.
As optimal technical scheme, the structure of the Fenton oxidation tower in Fenton processing unit at different levels, includes as follows:
Tower body, the top of tower body is opening-like;
Backflow weir notch is provided with around tower body top open part, two vertically disposed water outlet dividing plates are had in backflow weir notch, be divided into inhalant region and exhalant region, the inhalant region of backflow weir notch is provided with water inlet, the exhalant region of backflow weir notch is provided with water outlet, this water outlet is communicated with neutralizing well, and inhalant region and the exhalant region of backflow weir notch are equipped with refluxing opening;
Bottom in tower body is provided with into water water-distributing device, and it is communicated with the refluxing opening of exhalant region with inhalant region respectively by the internal reflux pipeline being provided with internal reflux pump.
As optimal technical scheme, the above-mentioned multistage Fenton treatment unit of high salt high-COD waste water, also comprises ferrous sulfate chemicals dosing plant, is communicated with by the exhalant region of pipeline with the backflow weir notch of the Fenton oxidation tower in Fenton processing unit at different levels;
Vitriol oil chemicals dosing plant, is communicated with by the exhalant region of pipeline with the backflow weir notch of the Fenton oxidation tower in Fenton processing unit at different levels;
Hydrogen peroxide chemicals dosing plant, is communicated with by the inhalant region of pipeline with the backflow weir notch of the Fenton oxidation tower in Fenton processing unit at different levels.
As optimal technical scheme, described water inlet water-distributing device comprises round tray cloth water pipe, water distributor and Perforated clapboard, Perforated clapboard is fastened on tower body inside, water distributor is arranged on round tray cloth water pipe, round tray cloth water pipe is arranged on the below of Perforated clapboard, water distributor is fastened in the hole of Perforated clapboard, described internal reflux pipeline and round tray cloth cross current.
As optimal technical scheme, the above-mentioned multistage Fenton treatment unit of high salt high-COD waste water, is also comprised the alkaline medicament adding device of neutralization, is communicated with by the inhalant region of pipeline with the backflow weir notch of the Fenton oxidation tower in Fenton processing unit at different levels.
The utility model can reach following beneficial effect:
Adopt the nearly saturated high salt high-COD waste water treatment process of one in the utility model and device thereof, can process high salinity Organic pollutants surface water, meet and produce and environmental requirement, and each device adopted in the utility model is existing commercially available matured product, water purification requirement can not be met when being used alone, only combining and water can being made to reach the requirement reused after specifically using in order, have easy to operate, advantage with low cost.
Accompanying drawing explanation
Fig. 1 is the structural representation of the multistage Fenton treatment unit of the utility model height salt high-COD waste water;
Fig. 2 is the schema of the multistage Fenton treatment process of high salt high-COD waste water of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the embodiment in the utility model is described in further detail.
The multistage Fenton treatment unit of high salt high-COD waste water of the present utility model, comprising: the multistage Fenton processing unit, intermediate pool, active carbon filtering device and the clean water basin that are connected in turn by pipeline;
Wherein Fenton processing unit at different levels includes: the Fenton oxidation tower connected in turn by pipeline, in and flocculation reaction device and centrifugal dehumidifier;
Intermediate pool is also communicated with by the water inlet of the Fenton oxidation tower of the pipeline with each Fenton processing unit that are provided with external reflux pump, and intermediate pool is also communicated with clean water basin by pipeline.
Clean water basin are connected with the backwashing water entrance of active carbon filtering device by back flushing pipeline, and the backwashing water outlet of active carbon filtering device is communicated with flocculation reaction device with last step Fenton processing unit by water discharge line.
As shown in Figure 1, to comprise two Fenton processing units (one-level Fenton processing unit and secondary Fenton processing unit), the utility model is described in detail.
In the present embodiment, the multistage Fenton treatment unit of high salt high-COD waste water of the present utility model, comprising: one-level Fenton processing unit (comprise in one-level Fenton oxidation tower 1, first and flocculation reaction device 2 and the first centrifugal dehumidifier 3), secondary Fenton processing unit (comprise in secondary Fenton oxidation tower 4, second and flocculation reaction device 5 and the second centrifugal dehumidifier 6), intermediate pool 7, active carbon filtering device 8 and clean water basin 9.
Wherein, the water inlet of one-level Fenton oxidation tower 1 is communicated with by the former water after the pipeline being provided with lift pump A1 regulates, the water outlet of one-level Fenton oxidation tower 1 is communicated with the water inlet of flocculation reaction device 2 with first by pipeline, be communicated with by the water inlet of pipeline with the first centrifugal dehumidifier 3 with the water outlet of flocculation reaction device 2 in first, the water outlet of the first centrifugal dehumidifier 3 is communicated with 4 by pipeline with the water inlet of secondary Fenton oxidation tower, the water outlet of secondary Fenton oxidation tower 4 is communicated with the water inlet of flocculation reaction device 5 with second by pipeline, be communicated with by the water inlet of pipeline with the second centrifugal dehumidifier 6 with the water outlet of flocculation reaction device 5 in second, the water inlet of the second centrifugal dehumidifier 6 is communicated with intermediate pool 7, intermediate pool 7 is communicated with the water inlet of one-level Fenton oxidation tower 1 by the pipeline being provided with external reflux pump A6, intermediate pool 7 is communicated with by the water inlet of pipeline with active carbon filtering device 8, intermediate pool 7 is also communicated with clean water basin 9 by pipeline, and the water outlet of active carbon filtering device 8 is communicated with clean water basin 9 by pipeline.
Clean water basin 9 are connected with the backwashing water entrance of active carbon filtering device 8 by back flushing pipeline, and the backwashing water outlet of active carbon filtering device 8 is communicated with the flocculation reaction groove of flocculation reaction device 5 with secondary Fenton processing unit by water discharge line.
Fenton oxidation tower structure in Fenton processing unit at different levels is identical, and for one-level Fenton oxidation tower 1, its structure comprises:
Tower body 10, the top of tower body 10 is opening-like;
Backflow weir notch 11 is provided with around tower body 10 top open part, two vertically disposed water outlet dividing plates are had in backflow weir notch 11, be divided into inhalant region and exhalant region, the inhalant region of backflow weir notch 11 is provided with the water inlet of Fenton oxidation tower, the exhalant region of backflow weir notch 11 is provided with the water outlet of Fenton oxidation tower, this water outlet is communicated with neutralizing well 20, and inhalant region and the exhalant region of backflow weir notch 11 are equipped with refluxing opening (being no longer shown specifically in prior art figure);
Bottom in tower body is provided with into water water-distributing device 12, and it is communicated with the refluxing opening of exhalant region with the inhalant region of Fenton oxidation tower 1 respectively by the internal reflux pipeline being provided with internal reflux pump A2; Wherein, water inlet water-distributing device 12 comprises round tray cloth water pipe, water distributor and Perforated clapboard, it is inner that Perforated clapboard is fastened on Fenton oxidation tower, water distributor is arranged on round tray cloth water pipe, round tray cloth water pipe is arranged on the below of Perforated clapboard, water distributor is fastened in the hole of Perforated clapboard, described internal reflux pipeline and round tray cloth cross current.
Ferrous sulfate chemicals dosing plant B4, is communicated with by the exhalant region of pipeline with backflow weir notch 21;
Vitriol oil chemicals dosing plant B3, is communicated with by the exhalant region of pipeline with backflow weir notch 21;
Hydrogen peroxide chemicals dosing plant B2, is communicated with by the inhalant region of pipeline with backflow weir notch 21;
Neutralize alkaline medicament adding device B1(and can add sodium hydroxide), be communicated with by the inhalant region of pipeline with backflow weir notch 21.
Hydrogen peroxide chemicals dosing plant B2, vitriol oil chemicals dosing plant B3 that Fenton oxidation tower connects and ferrous sulfate chemicals dosing plant B4, be also provided with internal reflux pump A2, ensures internal recycle, promotes the Homogeneous phase mixing of medicament and waste water, improves oxidation effectiveness.The interpolation of sulfuric acid can regulate waste water ph, reaches the optimal conditions that flco generates.When waste water COD is too high, a large amount of acid Fenton reagent can be added, make acid too high, now add basic agent by pH adjusting agent adding set B1, as sodium hydroxide etc., to regulate pH.FeSO
4h can be promoted
2o
2decomposition, generate hydroxyl radical free radical.The oxidizing potential of hydroxyl radical free radical reaches 2.8V, is the reinforcer that occurring in nature is only second to fluorine, can carry out efficient oxidation removal, thus reach the object reducing COD of sewage and colourity to biochemical organism difficult in sewage.And hydroxyl radical free radical can not produce secondary pollution, meet the requirement of environmental protection.After the process of Fenton oxidation tower, COD total removal rate >=60% in sewage.
Identical with flocculation reaction device structure in Fenton processing unit at different levels, for the first flocculation reaction device 2, its structure is described, comprises neutralizing well 20 and be communicated with flocculation reaction groove 21 with flocculation reaction groove 21 neutralizing well 20.Neutralize alkaline medicament adding device B1 to be communicated with neutralizing well 20 by pipeline, flocculant adding apparatus B5 is communicated with flocculation reaction groove 21 by pipeline.
Be provided with aerating apparatus 200 bottom neutralizing well 20, aerating apparatus 200 is connected with blower fan A9 (roots blower).Whipping appts 210 is provided with in flocculation reaction groove 21.
Wherein, the water outlet of Fenton oxidation tower 1 is communicated with by the water inlet of pipeline with neutralizing well 20; The water outlet of flocculation reaction groove 21 is communicated with the first centrifugal dehumidifier 3 by pipeline.
The water outlet of one-level Fenton oxidation tower 1 is by neutralization alkaline medicament adding device B1(NaOH dosing), in neutralizing well 20, regulate pH ≈ 9.00, enter flocculation reaction groove 21, add PAM by flocculation agent chemicals dosing plant B5 and carry out flocculation reaction.Fe in the water outlet of one-level Fenton oxidation tower 1
3+ion reacts and generates Fe (OH) under weakly alkaline environment
3precipitation.The remaining H of simultaneous reactions
2o
2easily decompose under alkaline environment and generate oxygen, the content of hydrogen peroxide in water outlet can be reduced.Coagulant aids polyacrylamide (PAM) can suspended particles in absorption effluent, macromolecular chain are twined mutually crosslinked, are formed and build bridge, thus flucculation structure are increased be easy to clarified separation, and then more effectively can remove the Fe (OH) in waste water
3precipitation and other pollutent.
The water outlet of neutralizing well 20 carries out flocculation reaction from flowing to flocculation reaction groove 21, then enter in the first centrifugal dehumidifier 3 by sludge lifting pump A3, floc sludge is centrifuged separation, and enter sludge treatment equipment by pipeline, the first centrifugal dehumidifier 3 water outlet next stage Fenton processing unit (water outlet of secondary Fenton processing unit enters intermediate pool 7).Wherein, first centrifugal dehumidifier 3 and the second centrifugal dehumidifier 6 are centrifugal concentrating dehydrating integrated machine, simultaneously, for avoiding the corrosion of high density salt solution, select the whizzer of high strength titanium equipment structure, the oxidized sludge that centrifugal dehumidifier concentrates delivers to landfill yard security landfill through plate-and-frame filter press dehydration.(another, the utility model is also provided with the device of sludge be separated for the treatment of centrifugal dehumidifier, and is communicated with centrifugal dehumidifier, for the treatment of the mud that centrifugal dehumidifier is discharged.Because sludge disposal technology is comparatively ripe, illustrate no longer separately at this.)
Intermediate pool 7 is communicated with the water inlet of one-level Fenton oxidation tower 1 by the pipeline being provided with external reflux pump A4, intermediate pool 7 is communicated with by the water inlet of pipeline with active carbon filtering device 8, intermediate pool 7 is also communicated with clean water basin 9 by pipeline, and the water outlet of active carbon filtering device 8 is communicated with clean water basin 9 by pipeline.
Water section in intermediate pool 5 is back to one-level Fenton oxidation tower 1 by external reflux pump A4, carries out advanced oxidation reaction after fully mixing with former water, ensures the condition of water quality needed for advanced oxidation.Rest part water, injects active carbon filtering device 6 by intermediate lift pump A5, after removing COD further through charcoal absorption, improving colourity, if to enter clean water basin 9(up to standard in gravity flow, by intermediate pool 7 directly injected clear water pond 9).Intermediate pool water outlet is provided with active carbon filtering device ensuring equipment, advanced treatment is carried out to water outlet not up to standard, ensure water outlet COD clearance more than 60% (according to " urban wastewater treatment firm pollutant emission standard " GB18918-2002: when influent COD is greater than 350mg/L, clearance should be greater than 60%).
Clean water basin 9 are connected with the backwashing water entrance of active carbon filtering device 8 by back flushing pipeline, and the backwashing water outlet of active carbon filtering device 8 is communicated with the flocculation reaction groove of flocculation reaction device 5 with second by water discharge line.Water in clean water basin 9 is water up to standard, and major part gravity flow discharge, small portion is for the cleaning active charcoal filtration unit 8 that refluxes, and back flushing water outlet again enters flocculation reaction groove and water carries out flocculation reaction jointly.
As shown in Figure 2, in order to ensure the normal operation of each device further and guarantee the water quality of output, be described (being treated to example with secondary Fenton) the multistage Fenton treatment process of high salt high-COD waste water of the present utility model with an embodiment, process is as follows:
1) (extracted by polluted-water and be provided with floating drum water fetching device after nearly saturated high salt high-COD waste water extracts from polluted-water (as mirabilite lake), avoid disturbance bed mud or pasture and water), after stable regulation is carried out to the water quality and quantity of waste water and pH value, entered in one-level Fenton oxidation tower 1 by lift pump and carry out the reaction of the first step advanced oxidation, add required chemical agent by volume pump.Raw water quality: sodium chloride salt or sodium sulfate salt are close to saturated, COD content >=10000mg/L.Carry out the stable of water quality and quantity adjustment and pH value at equalizing tank to waste water, by the adjustment of 0.5-2.0h, make equalizing tank water outlet COD≤10000mg/L, pH=7 ~ 8, equalizing tank water outlet inputs one-level Fenton oxidation tower 1 via former water lift pump A1.
2) H is passed through in the return line of one-level Fenton oxidation tower 1
2o
2chemicals dosing plant B2, vitriol oil chemicals dosing plant B3 and FeSO
4chemicals dosing plant B4 adds medicament.The water of external reflux simultaneously enters oxidizing tower by lift pump A6, and dilute former water, COD is reduced to about 2000mg/L from 10000mg/L.Medicament and sewage can be allowed to mix fully by the internal reflux of oxidizing tower.By adding sulfuric acid, regulating wastewater pH ≈ 3.00, COD at about 10000mg/L, ensureing the suitable condition of Fenton oxidation, become carbonic acid gas and water to be oxidized dirty organic pollutants, thus reducing COD concentration.FeSO
4aqueous solution mass percent concentration is 5%-15% and H
2o
2the concentration of the aqueous solution is 10%-30%, after the process of one-level Fenton oxidation, the COD total removal rate of water outlet between 50-85%, water outlet COD≤1000mg/L.
3) one-level Fenton oxidation tower 1 water outlet gravity flow enters the neutralizing well 20 with flocculation reaction device 2 in first, neutralizing well 20 configures and adds NaOH by neutralizing alkaline medicament adding device B1(), the pH ≈ 9.00 of water body in regulating tank, is conducive to the Fe in the water outlet of one-level Fenton oxidation tower 1
3+ion reacts and generates Fe (OH) under alkaline environment
3precipitation, is also conducive to excessive H simultaneously
2o
2decompose under alkaline environment.Also flocculation agent chemicals dosing plant B5 is passed through with the flocculation reaction groove 21 of flocculation reaction device 2 in first, adding coagulant aids polyacrylamide (PAM) wherein can suspended particles in absorption effluent, macromolecular chain is twined mutually crosslinked, formed and build bridge, thus make flucculation structure increase be easy to clarified separation, and then more effectively can remove the Fe (OH) in waste water
3precipitation and other pollutent.Adding of coagulant aids serves extraordinary removal effect to the colloid in sewage and solids suspension.
4) in first and flocculation reaction device 2 water outlet inject the first centrifugal dehumidifier 3, first centrifugal dehumidifier 3 by sludge pump A3 floc sludge carried out efficient centrifugal separation, water outlet enters secondary Fenton processing unit, repeating step 1) ~ 4).Gravity flow enters intermediate pool 5.Wherein in secondary Fenton oxidation tower, adjustment pH value of sewage water is between 2.00-4.00, and the COD entering into secondary Fenton oxidation tower remains on about 4000mg/L, and adds 5%-15% concentration FeSO
4with 10%-30% concentration H
2o
2, by hydraulic mixing mixing, reaction, be oxidized dirty organic pollutants and become carbonic acid gas and water, thus reduce COD concentration.
5) the water body COD≤500mg/L in intermediate pool 7,70%-90% are back to one-level Fenton oxidation tower 1 by external reflux pump A6, carry out mixed diluting to the former water of COD ≈ 10000mg/L, ensure that in oxidizing tower, sewage is in stable and complete admixture.COD of sewage ≈ 2000mg/L after mixing.The water that intermediate pool 5 remains 10% is water outlet, and its amount equals the water inlet of former water.
6) water outlet of intermediate pool 7 promotes through middle water pump A5, and direct injected clear water pond 7 time up to standard, if below standard, is delivered to active carbon filtering device 6, and the physisorption through gac removes COD reduction turbidity further, and then water outlet is from flowing to clean water basin 7.
7), after clean water basin 7 sewage reaches emission standard, gravity flow enters discharge channel.A small amount of water outlet of clean water basin can be used for the back flushing of active carbon filtering device 6, squeezes into active carbon filtering device 6 by backwashing pump A6.Backwashing water, under the continuous pressure of backwashing pump, enters flocculation reaction groove 31 by filter backwash water shoot and carries out reprocessing.
After testing, after the process of two-stage Fenton oxidation tower, COD total removal rate >=95% in sewage.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (10)
1. the multistage Fenton treatment unit of high salt high-COD waste water, is characterized in that, comprising: the multistage Fenton processing unit, intermediate pool, active carbon filtering device and the clean water basin that are connected in turn by pipeline;
Wherein Fenton processing unit at different levels includes: the Fenton oxidation tower connected in turn by pipeline, in and flocculation reaction device and centrifugal dehumidifier;
Intermediate pool is also communicated with by the water inlet of the Fenton oxidation tower of the pipeline with one-level Fenton processing unit that are provided with external reflux pump, and intermediate pool is also communicated with clean water basin by pipeline.
2. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 1, it is characterized in that, described clean water basin are connected with the backwashing water entrance of active carbon filtering device by back flushing pipeline, and the backwashing water outlet of active carbon filtering device is communicated with flocculation reaction device with last step Fenton processing unit by water discharge line.
3. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 1, is characterized in that, includes the neutralizing well be communicated with and flocculation reaction groove in Fenton processing unit at different levels with flocculation reaction device; The water outlet of the Fenton oxidation tower in Fenton processing unit at different levels is communicated with by the water inlet of pipeline with the neutralizing well in this Fenton processing unit; The water outlet of the flocculation reaction groove in Fenton processing unit at different levels is communicated with centrifugal dehumidifier in this Fenton processing unit by pipeline.
4. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 3, it is characterized in that, described clean water basin are connected with the backwashing water entrance of active carbon filtering device by back flushing pipeline, and the backwashing water outlet of active carbon filtering device is communicated with the flocculation reaction groove of flocculation reaction device with last step Fenton processing unit by water discharge line.
5. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 3, it is characterized in that, also comprise the alkaline medicament adding device of neutralization and flocculant adding apparatus, neutralize alkaline medicament adding device to be communicated with the neutralizing well in Fenton processing unit at different levels by pipeline, flocculant adding apparatus is communicated with the neutralizing well in Fenton processing unit at different levels by pipeline.
6. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 3, it is characterized in that, the neutralizing well inner bottom part in Fenton processing unit at different levels is equipped with aerating apparatus, and aerating apparatus is connected with blower fan; Whipping appts is equipped with in flocculation reaction groove in Fenton processing unit at different levels.
7. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 1, it is characterized in that, the structure of the Fenton oxidation tower in Fenton processing unit at different levels, includes as follows:
Tower body, the top of tower body is opening-like;
Backflow weir notch is provided with around tower body top open part, two vertically disposed water outlet dividing plates are had in backflow weir notch, be divided into inhalant region and exhalant region, the inhalant region of backflow weir notch is provided with water inlet, the exhalant region of backflow weir notch is provided with water outlet, this water outlet is communicated with neutralizing well, and inhalant region and the exhalant region of backflow weir notch are equipped with refluxing opening;
Bottom in tower body is provided with into water water-distributing device, and it is communicated with the refluxing opening of exhalant region with inhalant region respectively by the internal reflux pipeline being provided with internal reflux pump.
8. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 7, is characterized in that, also comprise ferrous sulfate chemicals dosing plant, is communicated with by the exhalant region of pipeline with the backflow weir notch of the Fenton oxidation tower in Fenton processing unit at different levels;
Vitriol oil chemicals dosing plant, is communicated with by the exhalant region of pipeline with the backflow weir notch of the Fenton oxidation tower in Fenton processing unit at different levels;
Hydrogen peroxide chemicals dosing plant, is communicated with by the inhalant region of pipeline with the backflow weir notch of the Fenton oxidation tower in Fenton processing unit at different levels.
9. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 7, it is characterized in that, described water inlet water-distributing device comprises round tray cloth water pipe, water distributor and Perforated clapboard, Perforated clapboard is fastened on tower body inside, water distributor is arranged on round tray cloth water pipe, round tray cloth water pipe is arranged on the below of Perforated clapboard, and water distributor is fastened in the hole of Perforated clapboard, described internal reflux pipeline and round tray cloth cross current.
10. the multistage Fenton treatment unit of high salt high-COD waste water according to claim 7, it is characterized in that, also comprise the alkaline medicament adding device of neutralization, be communicated with by the inhalant region of pipeline with the backflow weir notch of the Fenton oxidation tower in Fenton processing unit at different levels.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396191A (en) * | 2016-11-23 | 2017-02-15 | 北京高能时代环境技术股份有限公司 | Emergency treatment process and device of waste water with high COD and high NH3-N |
| CN108467142A (en) * | 2017-12-15 | 2018-08-31 | 苏州纳贝通环境科技有限公司 | A kind of preprocess method of industrial organic waste water |
-
2015
- 2015-12-08 CN CN201521010745.2U patent/CN205222876U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106396191A (en) * | 2016-11-23 | 2017-02-15 | 北京高能时代环境技术股份有限公司 | Emergency treatment process and device of waste water with high COD and high NH3-N |
| CN108467142A (en) * | 2017-12-15 | 2018-08-31 | 苏州纳贝通环境科技有限公司 | A kind of preprocess method of industrial organic waste water |
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