CN106430523B - Organic wastewater bio-chemical effluent ozone advanced treatment apparatus and processing method - Google Patents
Organic wastewater bio-chemical effluent ozone advanced treatment apparatus and processing method Download PDFInfo
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- CN106430523B CN106430523B CN201610977036.4A CN201610977036A CN106430523B CN 106430523 B CN106430523 B CN 106430523B CN 201610977036 A CN201610977036 A CN 201610977036A CN 106430523 B CN106430523 B CN 106430523B
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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
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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
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
Abstract
The present invention provides a kind of organic wastewater bio-chemical effluent ozone advanced treatment apparatus and processing methods.The organic wastewater bio-chemical effluent ozone advanced treatment apparatus, it is characterised in that it includes closed ozone oxidation device, the top of ozone oxidation device passes through exhaust collection pipeline connection safety valve, the outlet connecting pipe road of safety valve connects ejector, and ejector connects the inlet pipeline of ozone oxidation device.The processing unit structure is simple, it is easily operated, it is recycled by maintaining the synergistic effect of certain pressure and compounded mix in ozone oxidation device, waste water circulating reflux, ozone to collect, ozone utilization rate can be made up to 90% or more, while save ozone tail gas processing equipment expense.Therefore, which has the characteristics that impact resistance ability is strong, operation stability is high, good economy performance, can be used for the advanced treating of organic wastewater with high concentration bio-chemical effluent.
Description
Technical field
It is highly concentrated for handling the present invention relates to a kind of organic wastewater bio-chemical effluent ozone advanced treatment apparatus and processing method
Organic wastewater belongs to technical field of sewage.
Background technique
Organic wastewater with high concentration has the characteristics that pollutant concentration is high, coloration is high, complicated component, such as landfill leachate, papermaking
Waste water, dyeing waste water etc., by pre-processing with after secondary biochemical treatment, water outlet COD value is still higher, generally 200~
1000mg/L, coloration is usually 100~500 times, and biodegradability is very low.Therefore, organic wastewater with high concentration bio-chemical effluent need into
One step advanced treating, could qualified discharge.
Ozone oxidation is very competent, and oxidation-reduction potential in water reaches 2.07eV.Ozone can degrade in a short time
Pollutant in waste water makes macromolecule contaminant chain rupture, is broken down into small-molecule substance, improves wastewater biodegradability, reduces
Waste water COD and coloration.
However, solubility is lower in water for ozone, and ozone is easily decomposed into oxygen, ozone in usual wastewater treatment in water
Utilization rate is 30%~60%.In order to improve ozone utilization rate, the height of waste water by ozone oxidation unit is typically designed as 5~7m,
The residence time of waste water is typically designed as 1h or so, therefore is added significantly to occupied area, volume and the place of ozone oxidation device
Reason ability.
In addition, ozone needs electrion to produce, power consumption is higher.Simultaneously because ozone utilization rate is not high, in order to guarantee
Treatment effect, ozone dosage is higher in waste water, and mating ozone tail gas processing equipment is also needed behind ozone-oxidizing device.Cause
This, current conventional ozone treatment apparatus and processing method, there are following urgent problems to be solved: a. ozone utilization rate is low;b.
Ozone-oxidizing device takes up a large area, volume is big, processing capacity is insufficient;C. ozone-oxidizing device and processing method investment and operation
Cost is higher.
Summary of the invention
The object of the present invention is to provide a kind of organic wastewater bio-chemical effluent ozone advanced treatment apparatus and processing methods, pass through
Pressure certain in ozone oxidation device is kept, reaches certain pressure unlatching safety valve and discharges and collect ozone tail gas, by jet stream
Device makes the ozone tail gas collected be sufficiently mixed react again with the recycling waste water for being catalyzed agent hydrogen peroxide is mixed into, while being filled out using compound
The synergistic effect of material, therefore it is greatly improved ozone utilization rate, occupied area is reduced, mating ozone tail gas processing equipment is not necessarily to,
Ozone dosage is small, and cost of investment and operating cost are low.
In order to achieve the above object, the present invention provides a kind of organic wastewater bio-chemical effluent ozone advanced treatment apparatus,
It is characterized in that, including closed ozone oxidation device, the top of ozone oxidation device passes through exhaust collection pipeline connection safety valve, safety
The outlet connecting pipe road of valve connects ejector, and ejector connects the inlet pipeline of ozone oxidation device.
Preferably, the ozone oxidation device include the first oxidizing chamber, the second oxidizing chamber and be set to the first oxidizing chamber and
Intermediate bulkhead between second oxidizing chamber, the intermediate bulkhead include the first oxidizing chamber partition positioned at the first oxidizing chamber side
With the second oxidizing chamber partition for being located at the second oxidizing chamber side, the first oxidizing chamber and the second oxidizing chamber are separated by intermediate bulkhead,
Be equipped with compounded mix in first oxidizing chamber and the second oxidizing chamber, organic wastewater followed by the first oxidizing chamber, the first oxidizing chamber every
Space and the second oxidizing chamber between plate and the second oxidizing chamber partition.
It is highly preferred that the material of the ozone oxidation device is 304L or 316L stainless steel.
It is highly preferred that the ozone oxidation device inner surface is lined with enamel or polytetrafluoroethylene (PTFE).
It is highly preferred that the ozone oxidation device height is 2~3m.
It is highly preferred that the ozone oxidation device is circular.
It is highly preferred that the intermediate bulkhead surface is lined with enamel or polytetrafluoroethylene (PTFE).
It is highly preferred that the spacing of the first oxidizing chamber partition and the second oxidizing chamber partition is 0.1~0.5m.
It is highly preferred that the compounded mix includes the upper layer filler set gradually from top to bottom, middle filler and lower layer
Filler.
It is highly preferred that the compounded mix filling rate is 30~45%.
It is highly preferred that the packing volume ratio of upper layer filler, middle filler and lower layer's filler is (1 in the compounded mix
~3): (3~8): (1~3);
It is highly preferred that the upper layer filler is dolomite, calcite or gypsum.
It is highly preferred that the equivalent grain size of the upper layer filler is 1~5mm.
It is highly preferred that the preparation method of the middle filler the following steps are included:
Step 1: being in molar ratio 1: 2: 20 by palladium nitrate, aluminum nitrate and urea, being placed in volume ratio is the organic molten of 1:1
The in the mixed solvent of agent and water, persistently stirs evenly, and the organic solvent is methanol, ethyl alcohol, propyl alcohol or isopropanol;
Step 2: the clear liquid that the first step obtains is transferred in the pressure cooker of polytetrafluoroethyllining lining, 180~220 DEG C of guarantors
After holding 12~18h, it is cooled to room temperature;
Step 3: sediment is obtained by filtration in solution in pot, sediment is cleaned using the mixed solvent in the first step, until
Filtrate is in neutrality;
Step 4: the sediment that third step is obtained is placed in 80~100 DEG C after drying, place it in 500~900 DEG C
4~6h is roasted, is cooled to room temperature, can be obtained middle filler.
The BET specific surface area of the middle filler is 239~276m2/ g, BJH pore-size distribution are in 2~12nm, total hole body
Product is 0.3146~0.3386cm3/g。
It is highly preferred that the partial size of the middle filler is 3~9nm.
It is highly preferred that the BET specific surface area of the middle filler is 276m2/ g, BJH pore-size distribution are in 3~9nm, always
Pore volume is 0.3386cm3/g。
It is highly preferred that lower layer's filler is one in talcum, montmorillonite, kaolinite or the hydromica of irregular shape
Kind.
It is highly preferred that the equivalent grain size of lower layer's filler is 5mm~10mm.
Preferably, the bottom of the ozone oxidation device be equipped with the first aeration plate and the second aeration plate, the first aeration plate and
Second aeration plate is separately connected the first booster fan and the second booster fan, and the first booster fan and the second booster fan connect respectively
The first ozone flowmeter and the second ozone flowmeter are connect, the first ozone flowmeter and the second ozone flowmeter are separately connected the first valve
Door and the second valve, the first valve and the second valve connect ozone generator, and ozone generator connects gas source.
It is highly preferred that the gas source is one of air-source or source of oxygen.
It is highly preferred that first valve and the second valve are the combination of one or both of ball valve or butterfly valve.
It is highly preferred that the first ozone flowmeter and the second ozone flowmeter are vortex-shedding meter, target type meter
Or the combination of one or both of orifice flowmeter.
It is highly preferred that first booster fan and the second booster fan are that centrifugal booster fan or roots-type pressurize
The combination of one or both of blower.
Preferably, first aeration plate and the second aeration plate are microporous aeration disc, and material is ceramics or titanium valve.
Preferably, the water outlet of the ozone oxidation device connects circulating pump, and circulating pump connects recycle stream meter, metering pump
Outlet pipeline connect by triplate line with ejector with the outlet pipeline of recycle stream meter, metering pump connect hydrogen peroxide dosing
Tank.
It is highly preferred that the hydrogen peroxide concentration in the hydrogen peroxide grug feeding ja is 27.5%, 30% or 35%.
Preferably, the inlet pipeline of the ozone oxidation device is equipped with feed water flow meter and elevator pump.
The present invention also provides a kind of organic wastewater bio-chemical effluent ozone deep treatment methods, which is characterized in that in use
The organic wastewater bio-chemical effluent ozone advanced treatment apparatus stated, comprising the following steps: by organic wastewater bio-chemical effluent from ozone oxygen
Change device upper end inlet to be sent into from top to bottom, ozone oxidation device bottom constantly carries out ozonation aerated, and ozone gas is in ozone oxidation
It is moved from bottom to top in device, organic wastewater bio-chemical effluent is arranged after ozone Oxidation Treatment from ozone oxidation device lower end exit
Out;A part of wastewater effluent is sent into ejector after merging mixing with the hydrogen peroxide of addition, in the continuous aeration process of ozone, ozone oxygen
Change pressure in device to be continuously increased, when pressure is more than the cracking pressure of safety valve, safety valve starts to discharge ozone tail gas, ozone tail
Gas is collected by pipeline and is sent into ejector, mixes with waste water therein, continues with process into ozone oxidation device, constantly recycles
In the process, a part of wastewater effluent discharge;When pressure is reduced to the blow pressure of safety valve in ozone oxidation device, safety valve stops
Only discharge ozone tail gas process.
Preferably, the COD of the organic wastewater bio-chemical effluent is 200~1000mg/L.
Preferably, the residence time of waste water is 5~15min in the ozone oxidation device.
Preferably, the ozonation aerated amount of first aeration plate and the second aeration plate is respectively 100~200mg/L and 20
~80mg/L.
Preferably, it is described merge with the hydrogen peroxide of addition mixing a part of wastewater effluent waste water recycle ratio be 3~
8, hydrogen peroxide additional amount is 15~80mg/L.
Preferably, the opening pressure of safety valve be 0.2Mpa or 0.3Mpa, blow pressure be 0.12Mpa or
0.16Mpa。
Compared with prior art, the beneficial effects of the present invention are:
Water flow and ozone remain counter current contacting in ozone oxidation device of the present invention, and mass transfer force is big;Two sections of ladders of ozone
Progressively reduced aeration is spent, makes to give up Measuring Ozone Concentration in Water holding in ozone oxidation device uniformly;Using three layers of compounded mix coordinated, filter out
The SS of ozone is consumed in waste water, absorption Pollutants in Wastewater and catalysis ozone generate hydroxyl radical free radical and pollutant reaction, shearing
Waste water and ozone bubbles increase the air-water contact time;Ozone continuous aeration, by the control of safety valve, inside ozone oxidation device
It is run with certain pressure, increases ozone solubility, ozone extended residence time in pond;The ozone tail gas of safety valve release
Into ejector, after being mixed strongly with the recycling waste water for being mixed into hydrogen peroxide catalyst, into ozone oxidation device circular treatment, increase
Ozone advanced treating effect, makes ozone utilization rate be increased to 90% or more, saves the use of ozone tail gas processing equipment.
Apparatus of the present invention structure is simple, easily operated, by maintaining certain pressure and compounded mix in ozone oxidation device
Synergistic effect, waste water circulating reflux, ozone collect recycle.The device is with impact resistance ability is strong, operation stability is high, warp
The features such as Ji property is good, can be used for the advanced treating of organic wastewater with high concentration bio-chemical effluent.
Detailed description of the invention
Fig. 1 is a kind of organic wastewater with high concentration bio-chemical effluent ozone advanced treatment apparatus schematic diagram provided by the invention;
Wherein, 1- elevator pump, 2- feed water flow meter, 3- ozone oxidation device, 4- gas source, 5- ozone generator, the first valve of 6-
Door, the second valve of 10-, the first ozone of 7- flowmeter, 11- the second ozone flowmeter, the first booster fan of 8-, 12- second pressurize
Blower, the first aeration plate of 9-, the second aeration plate of 13-, 14- circulating pump, 15- recycle stream meter, 16- metering pump, 17- hydrogen peroxide add
Medicinal cupping, 18- safety valve, 19- ejector, the upper layer 20- filler, the first oxidizing chamber of 20a- upper layer filler, on the second oxidizing chamber of 20b-
Layer filler, 21- middle filler, 21a- the first oxidizing chamber middle filler, 21b- the second oxidizing chamber middle filler, 22- lower layer filler,
The first oxidizing chamber of 22a- lower layer filler, the second oxidizing chamber of 22b- lower layer filler, 23- intermediate bulkhead, among the first oxidizing chamber of 23a-
Partition, 23b- the second oxidizing chamber intermediate bulkhead, 24- compounded mix, 24a- the first oxidizing chamber compounded mix, the second oxidizing chamber of 24b-
Compounded mix, the first oxidizing chamber of 25-, the second oxidizing chamber of 26-.
Specific embodiment
Present invention will be further explained below with reference to specific examples.It should be understood that these embodiments are merely to illustrate the present invention
Rather than it limits the scope of the invention.In addition, it should also be understood that, after reading the content taught by the present invention, those skilled in the art
Member can make various changes or modifications the present invention, and such equivalent forms equally fall within the application the appended claims and limited
Range.
Embodiment 1: the processing of landfill leachate bio-chemical effluent
As shown in Figure 1, a kind of organic wastewater bio-chemical effluent ozone advanced treatment apparatus, including ozone oxidation unit, ozone
Feed unit, waste water cycling element and ozone tail gas reuse unit.
The ozone oxidation unit includes closed ozone oxidation device 3, and the ozone oxidation device 3 includes the first oxidation
Room 25, the second oxidizing chamber 26 and the intermediate bulkhead 23 between the first oxidizing chamber 25 and the second oxidizing chamber 26, it is described in
Spacing board 23 includes the first oxidizing chamber partition 23a positioned at 25 side of the first oxidizing chamber and the positioned at 26 side of the second oxidizing chamber
Titanium dioxide room partition 23b, the first oxidizing chamber 25 and the second oxidizing chamber 26 are separated by intermediate bulkhead 23, the first oxidizing chamber 25 and the
Compounded mix 24 is equipped in titanium dioxide room 26.Organic wastewater is followed by the first oxidizing chamber 25, the first oxidizing chamber partition 23a and
Space and the second oxidizing chamber 26 between the partition 23b of titanium dioxide room.The material of the ozone oxidation device 3 is 316L stainless steel,
Inner surface is lined with enamel material, is highly 2.8m.Ozone oxidation device 3 is circular.23 surface of intermediate bulkhead is lined with enamel.First
The spacing of oxidizing chamber partition 23a and the second oxidizing chamber partition 23b are 0.5m.The compounded mix 24 includes from top to bottom successively
The upper layer filler 20 of setting, middle filler 21 and lower layer's filler 22.The residence time of waste water is 5min in ozone oxidation device 3.
In the first oxidizing chamber compounded mix 24a, the first oxidizing chamber upper layer filler 20a is that equivalent grain size is 3mm
The partial size of calcite, the first oxidizing chamber middle filler 21a is 3~9nm, and the first oxidizing chamber lower layer filler 22a is that equivalent grain size is
The talcum of the irregular shape of 5mm.The filling rate of the first oxidizing chamber compounded mix 24a is 40%.First oxygen
Change in room compounded mix 24a, the first oxidizing chamber upper layer filler 20a, the first oxidizing chamber middle filler 21a and the first oxidizing chamber lower layer
The packing volume ratio of filler 22a is 3: 5: 3.In the second oxidizing chamber compounded mix 24b, the second oxidizing chamber upper layer filler
20b is the dolomite that equivalent grain size is 5mm, and the partial size of the second oxidizing chamber middle filler 21b is 3~9nm, the second oxidizing chamber lower layer
Filler 22b is the hydromica that equivalent grain size is 5mm.The filling rate of the second oxidizing chamber compounded mix 24b is 30%.It is described
Compounded mix 24b in, the second oxidizing chamber upper layer filler 21b, the second oxidizing chamber middle filler 22b and the second oxidizing chamber lower layer fill out
The packing volume ratio for expecting 23b is 1: 3: 1.
First oxidizing chamber middle filler 21a and the second oxidizing chamber middle filler 21b's the preparation method comprises the following steps:
Step 1: it is 1: 1 that palladium nitrate 0.01mol, aluminum nitrate 0.02mol and urea 0.2mol, which are placed in 180mL volume ratio,
Ethyl alcohol and water in the mixed solvent, persistently stir evenly;
Step 2: the clear liquid that the first step obtains is transferred in the pressure cooker of polytetrafluoroethyllining lining, 220 DEG C of holding 12h
Afterwards, 25 DEG C of room temperature are cooled to;
Step 3: sediment is obtained by filtration in solution in pot, sediment is cleaned using the mixed solvent in the first step, until
Filtrate is in neutrality;
Step 4: the sediment that third step is obtained is placed in 100 DEG C after drying, places it in 900 DEG C and roast 6h, it is cold
But to room temperature, it can be obtained porous nanometer material (PdAl2O4), as in the first oxidizing chamber middle filler 21a and the second oxidizing chamber
Layer filler 21b.The BET specific surface area of the porous nanometer material is 276m2/ g, BJH pore-size distribution are in 3~9nm, total hole body
Product is 0.3386cm3/g。
The ozone supply unit includes gas source 4, ozone generator 5, the first valve 6, the second valve 10, the first ozone
Flowmeter 7, the second ozone flowmeter 11, the first booster fan 8, the second booster fan 12, the first aeration plate 9 and the second aeration plate
13.First aeration plate 9 and the second aeration plate 13 are set to the first oxidizing chamber 25 of ozone oxidation device 3 and the bottom of the second oxidizing chamber 26
Portion, the first aeration plate 9 and the second aeration plate 13 are separately connected the first booster fan 8 and the second booster fan 12, the first pressurization wind
Machine 8 and the second booster fan 12 are separately connected the first ozone flowmeter 7 and the second ozone flowmeter 11, the first ozone flowmeter 7
It is separately connected the first valve 6 and the second valve 10 with the second ozone flowmeter 11, the first valve 6 and the second valve 10 connect ozone
Generator 5, ozone generator 5 connect gas source 4.
The waste water cycling element includes circulating pump 14, recycle stream meter 15, metering pump 16,17 and of hydrogen peroxide grug feeding ja
Ejector 19.The water outlet of ozone oxidation device 3 connects circulating pump 14, and circulating pump 14 connects recycle stream meter 15, metering pump 16
The outlet pipeline of outlet pipeline and recycle stream meter 15 by triplate line enter after waste water cycling element main line with ejector
19 connections, metering pump 16 connect hydrogen peroxide grug feeding ja 17.
The ozone tail gas reuse unit includes safety valve 18, the first oxidizing chamber 25 of ozone oxidation device 3 and the second oxygen
Exhaust collection pipeline is drawn in the top connection for changing room 26, and exhaust collection pipeline is connect with safety valve 18,18 export pipeline of safety valve
It is connect with ejector 19, ejector 19 connects the inlet pipeline of ozone oxidation device 3.
The inlet pipeline of the ozone oxidation device 3 is equipped with feed water flow meter 2 and elevator pump 1.
The each connecting pipe and valve of the organic wastewater bio-chemical effluent ozone advanced treatment apparatus are all made of 304L
Or 316L stainless steel material, and liner enamel or polytetrafluoroethylene material.
Use the processing method of above-mentioned organic wastewater bio-chemical effluent ozone advanced treatment apparatus are as follows:
By landfill leachate bio-chemical effluent (water quality detection the results are shown in Table 1) by elevator pump 1 and feed water flow meter 2 it is quantitative from
3 upper end inlet of ozone oxidation device is sent into from top to bottom, and for waste water after the first oxidizing chamber compounded mix 24a, waste water passes through the
Runner between one oxidizing chamber intermediate bulkhead 23a and the second oxidizing chamber intermediate bulkhead 23b, from top overflow from top to bottom to second
In oxidizing chamber 26, the second oxidizing chamber compounded mix 24b is continued through, final waste water is discharged from 3 lower end exit of ozone oxidation device.
When wherein waste water passes through compounded mix 24, upper layer filler 20 filters out the SS in waste water, dirt when middle filler 21 in absorption waste water
Object is contaminated, lower layer's filler 22 shears uniform fluid flow water outlet.
Gas source 4 supplies oxygen to ozone generator 5, passes through the first valve 6 and the second valve 10 and the first ozone flow
The display of meter 7 and the second ozone flowmeter 11 adjusts the first booster fan 8 and the second booster fan 12, makes 9 He of the first aeration plate
The ozonation aerated amount of second aeration plate 13 is respectively 160mg/L and 40mg/L, and blower amount of pressurization is 0.2Mpa.Ozone oxidation device
3 bottoms constantly carry out it is ozonation aerated, expose into ozone move from bottom to top, by compounded mix 24 and that flows from above to below useless
Water keeps counter current contacting.The gas source 4 is liquid oxygen, and the first valve 6 and the second valve 10 are ball valve, 8 He of the first booster fan
Second booster fan 12, is Roots's booster fan, and the first aeration plate 9 and the second aeration plate 13 are titanium plate microporous aeration disc.It is biochemical
Water outlet is discharged after ozone Oxidation Treatment from 3 lower end exit of ozone oxidation device.Ozone bubbles are shredded increasing by lower layer's filler 22
Add ozone solubility and catalysis ozone generates hydroxyl radical free radical, 21 catalysis ozone of middle filler generates hydroxyl radical free radical and pollutant
Reaction, upper layer filler 20 reduce ozone bubbles and rise kinetic energy increase ozone and waste water time.
Treated that a part of wastewater effluent (in terms of waste water recycle ratio) is conveyed into waste water by ozone oxidation device 3 for circulating pump 14
Circulation line shows the internal circulating load of waste water by recycle stream meter 15, will be double in hydrogen peroxide grug feeding ja 17 by metering pump 16
Oxygen water is quantitatively squeezed into waste water circulation line, and the waste water conveyed with circulating pump 14 is sufficiently mixed, and ejector 19 is sent into after merging.Institute
The waste water recycle ratio stated is 4, and the concentration of hydrogen peroxide is 30% in the hydrogen peroxide grug feeding ja, and the additional amount of hydrogen peroxide is
50mg/L。
In the continuous aeration process of ozone, pressure is continuously increased in ozone oxidation device 3, when pressure is more than the unlatching of safety valve 18
When pressure, safety valve 18 starts to discharge ozone tail gas, and ozone tail gas is collected by pipeline and is sent into ejector 19;When pressure drop in pond
Down to safety valve blow pressure when, safety valve start stop release ozone tail gas process.The opening pressure of safety valve is
0.3Mpa, blow pressure 0.16Mpa.
The ozone discharged by safety valve 18 enters ejector 19 with the recycling waste water for being mixed into hydrogen peroxide catalyst and is filled
After point mixing, it is conveyed into 3 top water inlet of ozone oxidation device, continues circular treatment, in continuous cyclic process, a part is useless
Water is discharged (water quality detection the results are shown in Table 2) discharge.
Table 1: landfill leachate bio-chemical effluent water quality detection result
Water quality indicator | Testing result |
COD | 800~1000mg/L |
BOD5/COD | 0.07~0.12 |
Coloration | 100~400 |
Table 2: the processing result of landfill leachate bio-chemical effluent
Water quality indicator | Testing result |
COD | 200~500mg/L |
BOD5/COD | 0.3~0.45 |
Coloration | 20~40 |
Ozone utilization rate | 91%~96% |
Embodiment 2: the processing of paper waste bio-chemical effluent
As shown in Figure 1, a kind of organic wastewater bio-chemical effluent ozone advanced treatment apparatus, including ozone oxidation unit, ozone
Feed unit, waste water cycling element and ozone tail gas reuse unit.
The ozone oxidation unit includes closed ozone oxidation device 3, and the ozone oxidation device 3 includes the first oxidation
Room 25, the second oxidizing chamber 26 and the intermediate bulkhead 23 between the first oxidizing chamber 25 and the second oxidizing chamber 26, it is described in
Spacing board 23 includes the first oxidizing chamber partition 23a positioned at 25 side of the first oxidizing chamber and the positioned at 26 side of the second oxidizing chamber
Titanium dioxide room partition 23b, the first oxidizing chamber 25 and the second oxidizing chamber 26 are separated by intermediate bulkhead 23, the first oxidizing chamber 25 and the
Compounded mix 24 is equipped in titanium dioxide room 26.Organic wastewater is followed by the first oxidizing chamber 25, the first oxidizing chamber partition 23a and
Space and the second oxidizing chamber 26 between the partition 23b of titanium dioxide room.The material of the ozone oxidation device 3 is 304L stainless steel,
Inner surface is lined with polytetrafluoroethylene (PTFE), is highly 2.6m.Ozone oxidation device 3 is circular.23 surface of intermediate bulkhead is lined with enamel.The
The spacing of one oxidizing chamber partition 23a and the second oxidizing chamber partition 23b are 0.8m.The compounded mix 24 include from top to bottom according to
The upper layer filler 20 of secondary setting, middle filler 21 and lower layer's filler 22.The residence time of waste water is 8min in ozone oxidation device.
First oxidizing chamber upper layer filler 20a is the gypsum that equivalent grain size is 3mm, the first oxidizing chamber middle filler 21a's
Partial size is 3~9nm, and the first oxidizing chamber lower layer filler 22a is the kaolinite for the irregular shape that equivalent grain size is 5mm.Described
The filling rate of first oxidizing chamber compounded mix 24a is 45%.In the first oxidizing chamber compounded mix 24a, the first oxidizing chamber
The packing volume ratio of upper layer filler 20a, the first oxidizing chamber middle filler 21a and the first oxidizing chamber lower layer filler 22a are 3: 8: 3.
In the second oxidizing chamber compounded mix 24b, the second oxidizing chamber upper layer filler 20b is the calcite that equivalent grain size is 3mm, the
The partial size of titanium dioxide room middle filler 21b is 3~9nm, and the second oxidizing chamber lower layer filler 22b is that the illiteracy that equivalent grain size is 5mm is de-
Stone.The filling rate of the second oxidizing chamber compounded mix 24b is 35%.In the second oxidizing chamber compounded mix 24b, the
The packing volume ratio of titanium dioxide room upper layer filler 20b, the second oxidizing chamber middle filler 21b and the second oxidizing chamber lower layer filler 22b
It is 3: 5: 1.
First oxidizing chamber middle filler 21a and the second oxidizing chamber middle filler 21b's the preparation method comprises the following steps:
Step 1: it is 1: 1 that palladium nitrate 0.01mol, aluminum nitrate 0.02mol and urea 0.2mol, which are placed in 180mL volume ratio,
Ethyl alcohol and water in the mixed solvent, persistently stir evenly;
Step 2: the clear liquid that the first step obtains is transferred in the pressure cooker of polytetrafluoroethyllining lining, 220 DEG C of holding 12h
Afterwards, room temperature (25 DEG C) are cooled to;
Step 3: sediment is obtained by filtration in solution in pot, sediment is cleaned using the mixed solvent in the first step, until
Filtrate is in neutrality;
Step 4: the sediment that third step is obtained is placed in 100 DEG C after drying, places it in 900 DEG C and roast 6h, it is cold
But to room temperature, it can be obtained porous nanometer material (PdAl2O4), as in the first oxidizing chamber middle filler 21a and the second oxidizing chamber
Layer filler 21b.The BET specific surface area of the porous nanometer material is 276m2/ g, BJH pore-size distribution are in 3~9nm, total hole body
Product is 0.3386cm3/g。
The ozone supply unit includes gas source 4, ozone generator 5, the first valve 6, the second valve 10, the first ozone
Flowmeter 7, the second ozone flowmeter 11, the first booster fan 8, the second booster fan 12, the first aeration plate 9 and the second aeration plate
13.First aeration plate 9 and the second aeration plate 13 are set to the first oxidizing chamber 25 of ozone oxidation device 3 and the bottom of the second oxidizing chamber 26
Portion, the first aeration plate 9 and the second aeration plate 13 are separately connected the first booster fan 8 and the second booster fan 12, the first pressurization wind
Machine 8 and the second booster fan 12 are separately connected the first ozone flowmeter 7 and the second ozone flowmeter 11, the first ozone flowmeter 7
It is separately connected the first valve 6 and the second valve 10 with the second ozone flowmeter 11, the first valve 6 and the second valve 10 connect ozone
Generator 5, ozone generator 5 connect gas source 4.
The waste water cycling element includes circulating pump 14, recycle stream meter 15, metering pump 16,17 and of hydrogen peroxide grug feeding ja
Ejector 19.The water outlet of ozone oxidation device 3 connects circulating pump 14, and circulating pump 14 connects recycle stream meter 15, metering pump 16
The outlet pipeline of outlet pipeline and recycle stream meter 15 by triplate line enter after waste water cycling element main line with ejector
19 connections, metering pump 16 connect hydrogen peroxide grug feeding ja 17.
The ozone tail gas reuse unit includes safety valve 18, the first oxidizing chamber 25 of ozone oxidation device 3 and the second oxygen
Exhaust collection pipeline is drawn in the top connection for changing room 26, and exhaust collection pipeline is connect with safety valve 18,18 export pipeline of safety valve
It is connect with ejector 19, ejector 19 connects the inlet pipeline of ozone oxidation device 3.
The inlet pipeline of the ozone oxidation device 3 is equipped with feed water flow meter 2 and elevator pump 1.
The each connecting pipe and valve of the organic wastewater bio-chemical effluent ozone advanced treatment apparatus are all made of 304L
Or 316L stainless steel material, and liner enamel or polytetrafluoroethylene material.
Use the processing method of above-mentioned organic wastewater bio-chemical effluent ozone advanced treatment apparatus are as follows:
Paper waste bio-chemical effluent (water quality detection the results are shown in Table 3) is quantitative from smelly by elevator pump 1 and feed water flow meter 2
3 upper end inlet of oxygen oxidator is sent into from top to bottom, and for waste water after the first oxidizing chamber compounded mix 24a, waste water passes through first
Runner between oxidizing chamber intermediate bulkhead 23a and the second oxidizing chamber intermediate bulkhead 23b, from top overflow from top to bottom to the second oxygen
Change in room 26, continue through the second oxidizing chamber compounded mix 24b, final waste water is discharged from 3 lower end exit of ozone oxidation device.
Gas source 4 supplies air to ozone generator 5, passes through the first valve 6 and the second valve 10 and the first ozone flow
The display of meter 7 and the second ozone flowmeter 11 adjusts the first booster fan 8 and the second booster fan 12, makes 9 He of the first aeration plate
The ozonation aerated amount of second aeration plate 13 is respectively 70mg/L and 40mg/L, and blower amount of pressurization is 0.1Mpa.Ozone oxidation device 3
Bottom constantly carry out it is ozonation aerated, expose into ozone move from bottom to top, by compounded mix 24 and that flows from above to below useless
Water keeps counter current contacting.The gas source 4 is air-source, and the first valve 6 and the second valve 10 are ball valve, the first booster fan 8
It is Roots's booster fan with the second booster fan 12, the first aeration plate 9 and the second aeration plate 13 are ceramic capillary aeration plate.It is raw
Water is dissolved after ozone Oxidation Treatment, is discharged from 3 lower end exit of ozone oxidation device.
Treated that a part of wastewater effluent (in terms of waste water recycle ratio) is conveyed into waste water by ozone oxidation device 3 for circulating pump 14
Circulation line shows the internal circulating load of waste water by recycle stream meter 15, will be double in hydrogen peroxide grug feeding ja 17 by metering pump 16
Oxygen water is quantitatively squeezed into waste water circulation line, and the waste water conveyed with circulating pump 14 is sufficiently mixed, and ejector 19 is sent into after merging.Institute
The waste water recycle ratio stated is 5, and the concentration of hydrogen peroxide is 27.5% in the hydrogen peroxide grug feeding ja, and the additional amount of hydrogen peroxide is
15mg/L。
In the continuous aeration process of ozone, pressure is continuously increased in ozone oxidation device 3, when pressure is more than the unlatching of safety valve 18
When pressure, safety valve 18 starts to discharge ozone tail gas, and ozone tail gas is collected by pipeline and is sent into ejector 19;When pressure drop in pond
Down to safety valve blow pressure when, safety valve start stop release ozone tail gas process.The opening pressure of safety valve is
0.2Mpa, blow pressure 0.12Mpa.
The ozone discharged by safety valve 18 enters ejector 19 with the recycling waste water for being mixed into hydrogen peroxide catalyst and is filled
After point mixing, it is conveyed into 3 top water inlet of ozone oxidation device, continues circular treatment, in continuous cyclic process, a part is useless
Water is discharged (water quality detection the results are shown in Table 4) discharge.
Table 3: paper waste bio-chemical effluent water quality detection result
Water quality indicator | Testing result |
COD | 200~300mg/L |
BOD5/COD | 0.09~0.14 |
Coloration | 100~200 |
Table 4: the processing result of paper waste bio-chemical effluent
Water quality indicator | Testing result |
COD | 80~100mg/L |
BOD5/COD | 0.28~0.46 |
Coloration | 10~30 |
Ozone utilization rate | 95%~98% |
Embodiment 3: the processing of dyeing waste water bio-chemical effluent
As shown in Figure 1, a kind of organic wastewater bio-chemical effluent ozone advanced treatment apparatus, including ozone oxidation unit, ozone
Feed unit, waste water cycling element and ozone tail gas reuse unit.
The ozone oxidation unit includes closed ozone oxidation device 3, and the ozone oxidation device 3 includes the first oxidation
Room 25, the second oxidizing chamber 26 and the intermediate bulkhead 23 between the first oxidizing chamber 25 and the second oxidizing chamber 26, it is described in
Spacing board 23 includes the first oxidizing chamber partition 23a positioned at 25 side of the first oxidizing chamber and the positioned at 26 side of the second oxidizing chamber
Titanium dioxide room partition 23b, the first oxidizing chamber 25 and the second oxidizing chamber 26 are separated by intermediate bulkhead 23, the first oxidizing chamber 25 and the
Compounded mix 24 is equipped in titanium dioxide room 26.Organic wastewater is followed by the first oxidizing chamber 25, the first oxidizing chamber partition 23a and
Space and the second oxidizing chamber 26 between the partition 23b of titanium dioxide room.The material of the ozone oxidation device 3 is 316L stainless steel,
Inner surface is lined with enamel, is highly 3.0m.Ozone oxidation device 3 is circular.23 surface of intermediate bulkhead is lined with enamel.First oxidation
The spacing of room partition 23a and the second oxidizing chamber partition 23b are 0.6m.The compounded mix 24 includes setting gradually from top to bottom
Upper layer filler 20, middle filler 21 and lower layer's filler 22.The residence time of waste water is 10min in ozone oxidation device.
First oxidizing chamber upper layer filler 20a is the dolomite that equivalent grain size is 1mm, the first oxidizing chamber middle filler 21a's
Partial size is 3~9nm, and the first oxidizing chamber lower layer filler 22a is the kaolinite for the irregular shape that equivalent grain size is 8mm.Described
The filling rate of first oxidizing chamber compounded mix 24a is 45%.In the first oxidizing chamber compounded mix 24a, the first oxidizing chamber
The packing volume ratio of upper layer filler 20a, the first oxidizing chamber middle filler 21a and the first oxidizing chamber lower layer filler 22a are 2: 5: 2.
In the second oxidizing chamber compounded mix 24b, the second oxidizing chamber upper layer filler 20b is the gypsum that equivalent grain size is 3mm, the
The partial size of titanium dioxide room middle filler 21b is 3~9nm, and the second oxidizing chamber lower layer filler 22b is the water cloud that equivalent grain size is 5mm
It is female.The filling rate of the second oxidizing chamber compounded mix 24b is 30%.In the second oxidizing chamber compounded mix 24b, the
The packing volume ratio of titanium dioxide room upper layer filler 20b, the second oxidizing chamber middle filler 21b and the second oxidizing chamber lower layer filler 22b
It is 1: 3: 1.
First oxidizing chamber middle filler 21a and the second oxidizing chamber middle filler 21b's the preparation method comprises the following steps::
Step 1: palladium nitrate 0.01mol, anhydrous nitric acid aluminium 0.02mol and urea 0.2mol are placed in 180mL volume ratio being
1: 1 ethyl alcohol and the in the mixed solvent of water, persistently stir evenly;
Step 2: the clear liquid that the first step obtains is transferred in the pressure cooker of polytetrafluoroethyllining lining, 220 DEG C of holding 12h
Afterwards, room temperature (25 DEG C) are cooled to;
Step 3: sediment is obtained by filtration in solution in pot, sediment is cleaned using the mixed solvent in the first step, until
Filtrate is in neutrality;
Step 4: the sediment that third step is obtained is placed in 100 DEG C after drying, places it in 900 DEG C and roast 6h, it is cold
But to room temperature, it can be obtained porous nanometer material (PdAl2O4), as in the first oxidizing chamber middle filler 21a and the second oxidizing chamber
Layer filler 21b.The BET specific surface area of the porous nanometer material is 276m2/ g, BJH pore-size distribution are in 3~9nm, total hole body
Product is 0.3386cm3/g。
The ozone supply unit includes gas source 4, ozone generator 5, the first valve 6, the second valve 10, the first ozone
Flowmeter 7, the second ozone flowmeter 11, the first booster fan 8, the second booster fan 12, the first aeration plate 9 and the second aeration plate
13.First aeration plate 9 and the second aeration plate 13 are set to the first oxidizing chamber 25 of ozone oxidation device 3 and the bottom of the second oxidizing chamber 26
Portion, the first aeration plate 9 and the second aeration plate 13 are separately connected the first booster fan 8 and the second booster fan 12, the first pressurization wind
Machine 8 and the second booster fan 12 are separately connected the first ozone flowmeter 7 and the second ozone flowmeter 11, the first ozone flowmeter 7
It is separately connected the first valve 6 and the second valve 10 with the second ozone flowmeter 11, the first valve 6 and the second valve 10 connect ozone
Generator 5, ozone generator 5 connect gas source 4.
The waste water cycling element includes circulating pump 14, recycle stream meter 15, metering pump 16,17 and of hydrogen peroxide grug feeding ja
Ejector 19.The water outlet of ozone oxidation device 3 connects circulating pump 14, and circulating pump 14 connects recycle stream meter 15, metering pump 16
The outlet pipeline of outlet pipeline and recycle stream meter 15 by triplate line enter after waste water cycling element main line with ejector
19 connections, metering pump 16 connect hydrogen peroxide grug feeding ja 17.
The ozone tail gas reuse unit includes safety valve 18, the first oxidizing chamber 25 of ozone oxidation device 3 and the second oxygen
Exhaust collection pipeline is drawn in the top connection for changing room 26, and exhaust collection pipeline is connect with safety valve 18,18 export pipeline of safety valve
It is connect with ejector 19, ejector 19 connects the inlet pipeline of ozone oxidation device 3.
The inlet pipeline of the ozone oxidation device 3 is equipped with feed water flow meter 2 and elevator pump 1.
The each connecting pipe and valve of the organic wastewater bio-chemical effluent ozone advanced treatment apparatus are all made of 304L
Or 316L stainless steel material, and liner enamel or polytetrafluoroethylene material.
Use the processing method of above-mentioned organic wastewater bio-chemical effluent ozone advanced treatment apparatus are as follows:
Dyeing waste water bio-chemical effluent (water quality detection the results are shown in Table 5) is quantitative from smelly by elevator pump 1 and feed water flow meter 2
3 upper end inlet of oxygen oxidator is sent into from top to bottom, and for waste water after the first oxidizing chamber compounded mix 24a, waste water passes through first
Runner between oxidizing chamber intermediate bulkhead 23a and the second oxidizing chamber intermediate bulkhead 23b, from top overflow from top to bottom to the second oxygen
Change in room 26, continue through the second oxidizing chamber compounded mix 24b, final waste water is discharged from 3 lower end exit of ozone oxidation device.
Gas source 4 supplies air to ozone generator 5, passes through the first valve 6 and the second valve 10 and the first ozone flow
The display of meter 7 and the second ozone flowmeter 11 adjusts the first booster fan 8 and the second booster fan 12, makes 9 He of the first aeration plate
The ozonation aerated amount of second aeration plate 13 is respectively 100mg/L and 60mg/L, and blower amount of pressurization is 0.2Mpa.Ozone oxidation device
3 bottoms constantly carry out it is ozonation aerated, expose into ozone move from bottom to top, by compounded mix 24 and that flows from above to below useless
Water keeps counter current contacting.The gas source 4 is air-source, and the first valve 6 and the second valve 10 are ball valve, the first booster fan 8
With the second booster fan 12, for for centrifugal booster fan, the first aeration plate 9 and the second aeration plate 13 are titanium valve micro-pore aeration
Disk.Bio-chemical effluent is discharged after ozone Oxidation Treatment from 3 lower end exit of ozone oxidation device.
Treated that a part of wastewater effluent (in terms of waste water recycle ratio) is conveyed into waste water by ozone oxidation device 3 for circulating pump 14
Circulation line shows the internal circulating load of waste water by recycle stream meter 15, will be double in hydrogen peroxide grug feeding ja 17 by metering pump 16
Oxygen water is quantitatively squeezed into waste water circulation line, and the waste water conveyed with circulating pump 14 is sufficiently mixed, and ejector 19 is sent into after merging.Institute
The waste water recycle ratio stated is 8, and the concentration of hydrogen peroxide is 35% in the hydrogen peroxide grug feeding ja, and the additional amount of hydrogen peroxide is
30mg/L。
In the continuous aeration process of ozone, pressure is continuously increased in ozone oxidation device 3, when pressure is more than the unlatching of safety valve 18
When pressure, safety valve 18 starts to discharge ozone tail gas, and ozone tail gas is collected by pipeline and is sent into ejector 19;When pressure drop in pond
Down to safety valve blow pressure when, safety valve start stop release ozone tail gas process.The opening pressure of safety valve is
0.3Mpa, blow pressure 0.16Mpa.
The ozone discharged by safety valve 18 enters ejector 19 with the recycling waste water for being mixed into hydrogen peroxide catalyst and is filled
After point mixing, it is conveyed into 3 top water inlet of ozone oxidation device, continues circular treatment, in continuous cyclic process, a part is useless
Water is discharged (water quality detection the results are shown in Table 6) discharge.
Table 5: dyeing waste water bio-chemical effluent water quality detection result
Water quality indicator | Testing result |
COD | 300~500mg/L |
BOD5/COD | 0.08~0.15 |
Coloration | 100~200 |
Table 6: the processing result of dyeing waste water bio-chemical effluent
Claims (7)
1. a kind of organic wastewater bio-chemical effluent ozone advanced treatment apparatus, which is characterized in that including closed ozone oxidation device
(3), the top of ozone oxidation device (3) passes through exhaust collection pipeline connection safety valve (18), the outlet connecting pipe of safety valve (18)
Road connects ejector (19), and ejector (19) connects the inlet pipeline of ozone oxidation device (3);Ozone oxidation device (3) packet
In including the first oxidizing chamber (25), the second oxidizing chamber (26) and being set between the first oxidizing chamber (25) and the second oxidizing chamber (26)
Spacing board (23), the intermediate bulkhead (23) include the first oxidizing chamber partition (23a) positioned at the first oxidizing chamber (25) side
With the second oxidizing chamber partition (23b) for being located at the second oxidizing chamber (26) side, the first oxidizing chamber (25) and the second oxidizing chamber (26)
Separated by intermediate bulkhead (23), is equipped with compounded mix (24) in the first oxidizing chamber (25) and the second oxidizing chamber (26), organic waste
Water followed by between the first oxidizing chamber (25), the first oxidizing chamber partition (23a) and the second oxidizing chamber partition (23b) space,
With the second oxidizing chamber (26);The compounded mix (24) includes the upper layer filler (20) set gradually from top to bottom, and middle layer is filled out
Expect (21) and lower layer's filler (22);The upper layer filler (20) is dolomite, calcite or gypsum;Lower layer's filler
It (22) is one of talcum, montmorillonite, kaolinite or the hydromica of irregular shape;The preparation of the middle filler (21)
Method the following steps are included: step 1: be 1:2:20 by palladium nitrate, aluminum nitrate and urea, being placed in volume ratio is 1:1 in molar ratio
Organic solvent and water in the mixed solvent, persistently stir evenly, the organic solvent be methanol, ethyl alcohol, propyl alcohol or isopropanol;
Step 2: the clear liquid that the first step obtains is transferred in the pressure cooker of polytetrafluoroethyllining lining, 180~220 DEG C of 12~18h of holding
Afterwards, it is cooled to room temperature;Step 3: sediment is obtained by filtration in solution in pot, cleaned using the mixed solvent in the first step
Sediment, until filtrate is in neutrality;Step 4: the sediment that third step is obtained is placed in 80~100 DEG C after drying, set
4~6h is roasted in 500~900 DEG C, is cooled to room temperature, be can be obtained middle filler.
2. organic wastewater bio-chemical effluent ozone advanced treatment apparatus as described in claim 1, which is characterized in that described is compound
In filler (24), the packing volume ratio of upper layer filler (20), middle filler (21) and lower layer's filler (22) is (1~3): (3~
8): (1~3).
3. organic wastewater bio-chemical effluent ozone advanced treatment apparatus as described in claim 1, which is characterized in that the ozone
The bottom of oxidator (3) is equipped with the first aeration plate (9) and the second aeration plate (13), the first aeration plate (9) and the second aeration plate
(13) the first booster fan (8) and the second booster fan (12), the first booster fan (8) and the second booster fan are separately connected
(12) the first ozone flowmeter (7) and the second ozone flowmeter (11), the first ozone flowmeter (7) and the second ozone are separately connected
Flowmeter (11) is separately connected the first valve (6) and the second valve (10), and the first valve (6) and the second valve (10) connect ozone
Generator (5), ozone generator (5) connect gas source (4).
4. organic wastewater bio-chemical effluent ozone advanced treatment apparatus as described in claim 1, it is characterised in that the ozone
The water outlet of oxidator (3) connects circulating pump (14), and circulating pump (14) connects recycle stream meter (15), the water outlet of metering pump (16)
Pipeline is connect by triplate line with ejector (19) with the outlet pipeline of recycle stream meter (15), and metering pump (16) connects dioxygen
Water grug feeding jar (17).
5. organic wastewater bio-chemical effluent ozone advanced treatment apparatus as described in claim 1, which is characterized in that the ozone
The inlet pipeline of oxidator (3) is equipped with feed water flow meter (2) and elevator pump (1).
6. a kind of organic wastewater bio-chemical effluent ozone deep treatment method, which is characterized in that using any one of claim 1-5
The organic wastewater bio-chemical effluent ozone advanced treatment apparatus, comprising the following steps: by organic wastewater bio-chemical effluent from ozone
Oxidator upper end inlet is sent into from top to bottom, and ozone oxidation device bottom constantly carries out ozonation aerated, and ozone gas is in ozone oxygen
Change and moved from bottom to top in device, organic wastewater bio-chemical effluent is after ozone Oxidation Treatment, from ozone oxidation device lower end exit
Discharge;A part of wastewater effluent is sent into ejector after merging mixing with the hydrogen peroxide of addition, in the continuous aeration process of ozone, ozone
Pressure is continuously increased in oxidator, and when pressure is more than the cracking pressure of safety valve, safety valve starts to discharge ozone tail gas, ozone
Tail gas is collected by pipeline and is sent into ejector, mixes with waste water therein, continues with process into ozone oxidation device, constantly follow
During ring, a part of wastewater effluent discharge;When pressure is reduced to the blow pressure of safety valve in ozone oxidation device, safety valve
Stop release ozone tail gas process.
7. organic wastewater bio-chemical effluent ozone deep treatment method as claimed in claim 6, which is characterized in that the safety
Valve opening pressure is 0.2Mpa or 0.3Mpa, and blow pressure is 0.12Mpa or 0.16Mpa.
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CN204689706U (en) * | 2015-06-04 | 2015-10-07 | 陕西宝钢气体有限公司 | A kind of Multistage external circulating formula ozone contact reaction device |
CN106007078A (en) * | 2016-07-05 | 2016-10-12 | 双良节能系统股份有限公司 | Intermittent adsorption-catalytic oxidation treatment method for removing organic matters of coal chemical high-salt water |
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CN203200067U (en) * | 2012-07-13 | 2013-09-18 | 天津大港油田科远石油工程有限责任公司 | Sewage treatment device for improving utilization ratio of ozone by catalytic oxidation |
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