CN205472872U - Modular ozone catalytic oxidation device - Google Patents
Modular ozone catalytic oxidation device Download PDFInfo
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- CN205472872U CN205472872U CN201620059508.3U CN201620059508U CN205472872U CN 205472872 U CN205472872 U CN 205472872U CN 201620059508 U CN201620059508 U CN 201620059508U CN 205472872 U CN205472872 U CN 205472872U
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Abstract
The utility model provides a modular ozone catalytic oxidation device. The device includes pond (A) and retort (B), pond (A) includes two at least tanks, and every tank is connected through circulating water inlet tube (D) and circulating water outlet pipe (E) with retort (B), and every tank forms the closed circulation return circuit with retort (B). The utility model discloses a principle that pond (A) and retort (B) combined together and design to the function of coverage area is born to retort (B), through dwindling a jar body diameter, promotes catalyst packing and loads the height, makes the packing layer become drawn -up reaction bed. The utility model discloses this kind of composite set divides functional areas and opens, reduces the equipment investment in the performance maximum efficiency.
Description
Technical field
This utility model belongs to technical field of sewage, relates to a kind of combination type device for catalyzing and oxidating ozone for sewage disposal.
Background technology
Catalytic ozonation technology is a kind of high-level oxidation technology in the environment-protective water treatment technology grown up in recent years, is mainly used in removing the hardly degraded organic substance in sewage, reduces CODCr value.It is generally made up of subsystems such as ozone generation system, reaction tank (tank), catalyst as relatively independent, a complete depth-averaged model system.Wherein ozonator commercialization is for many years, has the generator manufacturer of specialty constantly to carry out technological improvement and performance boost.The combination synergistic oxidation effect (including the group technologies such as microwave+ozone catalytic, photocatalysis+ozone catalytic, ozone catalytic+ultraviolet light (UV)) of the development (including selective catalysis component, catalytic carrier, homogeneous catalysis, heterocatalysis) of catalyst and ozone catalytic and other technologies is had focused largely on currently for the research of catalytic ozonation technology.But the reaction unit for catalytic ozonation is studied the most widely.Unique place that catalytic ozonation reaction unit reacts as catalytic ozonation, oxidation effectiveness also can be had an impact by it.
Conventional device for catalyzing and oxidating ozone can be divided into pond type (steel and concrete structure) and tower (glass steel material) two kinds.Pond type available depth is 5.5～6.5m, the tower depth of water typically can reach about 8.5m, the device for catalyzing and oxidating ozone of complete set includes the release of body, ozone and collection conduit, supporting layer, catalyst filling, inlet and outlet pipe lines, backwash pipeline and related valve, as shown in Figure 1.
Inlet and outlet water mode uses bottom in and top out or upper entering and lower leaving, makes sewage uniformly through catalyst filling layer, and makes its hydroxyl radical free radical produced with ozone under catalyst action carry out oxidative degradation.Ozone is discharged by the gas distributing pipeline of bottom of device (on equipped with titanium material aeration plate DN150), from bottom to top by catalyst filling, tail gas from pond/tank body top tail gas mouth discharges.Device itself is provided with air-water backwashing function, periodically catalyst filling is carried out backwash, it is to avoid packing layer suspension fouling and fouling.
Utility model content
Conventional catalytic ozonation reaction unit inner space can be divided into effective district (having catalyst filling) and dead space (without catalyst filling) two parts.Experimental verification catalytic ozonation effect occurs mainly in effective district, and the catalyst filling quantity in effective district directly determines project investment.The most how to improve sewage time of contact in effective district, improve catalytic ozonation usefulness, reduce catalyst filling quantity is the direction improving catalytic ozonation reaction unit simultaneously as far as possible.
The shortcoming that conventional catalytic ozonation reaction unit exists:
In the most conventional catalytic ozonation reaction unit: 1. the pond type device depth of water is restricted, general pond type available depth is 5.5～6.5m, and ozone generator outlet air pressure is about at 10m water column, mean that ozone stroke in water is short, loss speed, causing ozone utilization rate the highest, average utilization is 70%；2. the tower device depth of water typically can reach about 8.5m, although differential static pressure can be utilized to improve ozone utilization ratio in water body, but cost is expensive compared with pond type.
The reaction unit of both the above form there is also common drawback: 1. during continuum micromeehanics, water distribution is unsuitable uniformly, needs to arrange independent distributing pipe line system；2. in running, inflow and ozonation aerated amount are relatively small in the intensity of unit are, catalyst filling proportion is bigger, catalyst filling layer is substantially at fixed bed state, gas water is caused easily to form fixing passage when catalyst filling layer passes through, cause the short stream of gas water, have impact on being fully contacted of gas liquid solid three-phase；The sewage that the shortest stream passes through can not repeat to contact with catalyst filling, causes defective sewage to directly affect effluent quality effect；4. anti-shock loading is little, and when influent quality fluctuation is bigger, the Traditional continuous flow response time is difficult to adjust so that final outflow water is difficult to up to standard.
This utility model is solved the technical problem that to be: for the deficiency of existing device for catalyzing and oxidating ozone, a kind of combination type device for catalyzing and oxidating ozone is proposed, use the mode that pond and tank body combine, by optimizing structure and the method for operation of device for catalyzing and oxidating ozone, design a set of device that can preferably play catalytic ozonation usefulness, can reduce investment outlay, can guarantee that again higher treatment effeciency, improve the automatic control degree that system is run simultaneously.
Specifically, the utility model proposes following technical scheme.
A kind of combination type device for catalyzing and oxidating ozone, including pond A and retort B,
Described pond A includes that at least two tank, each tank are connected by circulating water inlet D and circulating water outlet pipe E with retort B, and each tank forms closed circulation with retort B.
Preferably, wherein, described retort B is disposed with from top to bottom: air inlet area B1, inhalant region B2, catalyst zone B3, clear water zone B4 and gas collection district B5；Described inhalant region B2 is connected with each tank, and described clear water zone B4 is connected with each tank.
Preferably, wherein, described catalyst zone B3 highly accounts for the 70-80% of retort B total height；Described clear water zone B4 accounts for the 5-10% of retort B total height；Described air inlet area B1 accounts for the 5-10% of retort B total height, described inhalant region B2 and accounts for the 5-10% of retort B total height, described gas collection district B5 and account for the 5-10% of retort B total height.
Preferably, wherein, described retort B diameter is less than 4m.
Preferably, wherein, it is connected in parallel between tank.
Preferably, wherein, connecting the sewage water inlet pipe of each tank, sewage drainage pipe, circulating water inlet and circulating water outlet pipe are provided with valve；Circulating water inlet is provided with water circulating pump C.
Preferably, wherein, described pond A includes tank A1 and tank A2；
Described tank A1 passes through circulating water inlet branch line D1 and the inhalant region B2 of circulating water inlet D coupled reaction tank B, by circulating water outlet pipe branch line E1 and the clear water zone B4 of circulating water inlet E coupled reaction tank B；It is provided with inlet valve A1-1 on the sewage water inlet pipe branch line F1 of described tank A1, it is provided with recirculated water inlet valve A1-2 on the circulating water inlet branch line D1 of described tank A1, it is provided with on the circulating water outlet pipe branch line E1 of described tank A1 on the sewage drainage pipe branch line G1 of recirculated water flowing water Valve A1-3, described tank A1 and is provided with water discharging valve A1-4；
Described tank A2 passes through circulating water inlet branch line D2 and the inhalant region B2 of circulating water inlet D coupled reaction tank B, by circulating water outlet pipe branch line E2 and the clear water zone B4 of circulating water inlet E coupled reaction tank B；It is provided with inlet valve A2-1 on the sewage water inlet pipe branch line F2 of described tank A2, it is provided with recirculated water inlet valve A2-2 on the circulating water inlet branch line D2 of described tank A2, it is provided with on the circulating water outlet pipe branch line E2 of described tank A2 on the sewage drainage pipe branch line G2 of recirculated water flowing water Valve A2-3, described tank A2 and is provided with water discharging valve A2-4.
Preferably, the air inlet area B1 of described retort B is provided with ozone air inlet pipe B1-1 and ozone gas distributing pipeline B1-2.
Preferably, described retort B air inlet area B1 is additionally provided with backwash air pipe B1-3 and air cloth feed channel B1-4；Retort B inhalant region B2 is additionally provided with backwash water inlet pipe B2-1；Retort B clear water zone B4 is additionally provided with backwash water outlet pipe B4-1；Retort B gas collection district B5 is additionally provided with ozone tail gas row mouth B5-1 and air vent B5-2.
Using the technical solution of the utility model, at least have the advantages that and catalytic ozonation efficiency can be improved 15%～20%, system investments saves about 10%.Additionally this utility model device has following advantage compared with conventional device for catalyzing and oxidating ozone:
1. the function difference of effective district and dead space is there is for conventional catalytic ozonation reaction unit, use pond A and retort B principle designed in conjunction, the function in effective district is undertaken with retort B, by reducing tank diameter, promote catalyst filling filling height, make packing layer become thin and tall reaction bed；The tradition independent pond A making steel and concrete structure in dead space so that it is mainly undertake the effect of water, transition.This combination unit of this utility model, separates function zoning, reduces equipment investment while playing maximum efficiency.
2. increasing circulation measure between pond A and retort B, make sewage iterative cycles in retort B, this makes the short stream can be repeatedly through packing layer through the sewage of packing layer, and the reaction preventing conventional equipment from causing because of short conductance is the most thorough；
3. circulation measure is played water distribution again at retort B lower area and cleans the effect of filler, and it is cleaned intensity and can reach 5～10L/m2.s, can effectively prevent float in the blocking of catalyst filling layer, reduce the fouling on catalyst filling surface, harden risk, also can form a mixing wastewater with air turbulent flow group before catalyst filling layer, guarantee that air water is biphase to be first sufficiently mixed, be more preferably combined with solid phase；
4., when fluctuation occurs in present segment water quality, more response time can be striven for for retort B by controlling flooding time and the water discharge time of pond A, to ensure the up to standard of water quality, adds the capacity of resisting impact load of whole catalytic ozonation system.
Accompanying drawing explanation
Fig. 1 existing catalytic ozonation reaction unit schematic diagram.
Fig. 2 this utility model combination type device for catalyzing and oxidating ozone schematic diagram.
Fig. 3 pond A operation logic schematic diagram.
Fig. 4 this utility model device and prior-art devices outlet effect curve chart.
Detailed description of the invention
In order to be better understood from content of the present utility model, below in conjunction with detailed description of the invention, the technical solution of the utility model is described further, but specific embodiment is not the restriction being done this utility model.
This utility model device for catalyzing and oxidating ozone, uses pond A and retort B composite reaction pattern, and pond A is responsible for water inlet, effluent functions regulation, and retort B is responsible for the efficient section reaction of catalytic ozonation.This utility model normality runs program: expose the continuously ozone reaction, the very method of state property on-line operation of water inlet/circulation/draining+retort B of pond A have air purge, water backwashing.All catalytic ozonation techniques that this utility model device relates to be applicable to advanced treatment of wastewater.That this utility model sewage, waste water refer to necessarily to be polluted, from life and the discharge water that produces, usually contain the material that can be aoxidized by strong oxidizer.This utility model COD characterizes the disposition of sewage, waste water.COD COD (Chemical Oxygen Demand) is chemically to measure to need the amount of oxidized reducing substances in water sample.
As in figure 2 it is shown, this utility model combination type device for catalyzing and oxidating ozone schematic diagram.This combination type device for catalyzing and oxidating ozone includes pond A and retort B.Pond A is responsible for receiving water, middle transition, the effect of draining, and retort B provides reacting environment's (bottom exposes ozone continuously) of catalysis oxidation.It is attached by water circulating pump C between pond A and retort B, the effect of water circulating pump C is to squeeze into bottom retort B by the water of pond A, water is made through retort B catalyst filling layer and to react with ozone, the water outlet of retort B upper end flow back into pond A by action of gravity, circulate in forming one, after some cycle-indexes (that is: reaching the response time of requirement), water quality reaching standard, then by arranging outside the A of pond.
This utility model pond A includes at least two tank.Each tank is connected by circulating water inlet D and circulating water outlet pipe E with retort B, and each tank forms closed circulation with retort B.Fig. 2 illustrate only pond A and includes tank A1 and the situation of tank A2, but according to this utility model disclosure, those skilled in the art have the ability to implement to include the combination type device for catalyzing and oxidating ozone of more than three tanks, and situation shown in Fig. 2 is not intended as restriction of the present utility model.
This utility model retort B includes the most successively: air inlet area B1, inhalant region B2, catalyst zone B3, clear water zone B4 and gas collection district B5；Described inhalant region B2 is connected with each tank, and described clear water zone B4 is connected with each tank.
Being connected in parallel between this utility model tank, connect the sewage water inlet pipe of each tank, sewage drainage pipe, circulating water inlet and circulating water outlet pipe are provided with valve；Circulating water inlet is provided with water circulating pump C.Concrete, as in figure 2 it is shown, tank A1 is by circulating water inlet branch line D1 and the inhalant region B2 of circulating water inlet D coupled reaction tank B, by circulating water outlet pipe branch line E1 and the clear water zone B4 of circulating water inlet E coupled reaction tank B.Sewage water inlet pipe F has on the sewage water inlet pipe branch line F1 of sewage water inlet pipe branch line F1, described tank A1 and is provided with inlet valve A1-1.Circulating water inlet D has on the circulating water inlet branch line D1 of circulating water inlet branch line D1, described tank A1 and is provided with recirculated water inlet valve A1-2.Circulating water outlet pipe E has on the circulating water outlet pipe branch line E1 of circulating water outlet pipe branch line E1, described tank A1 and is provided with recirculated water flowing water Valve A1-3.Sewage drainage pipe G has sewage drainage pipe branch line G1, and the sewage drainage pipe branch line G1 of described tank A1 is provided with water discharging valve A1-4.Tank A2 passes through circulating water inlet branch line D2 and the inhalant region B2 of circulating water inlet D coupled reaction tank B, by circulating water outlet pipe branch line E2 and the clear water zone B4 of circulating water inlet E coupled reaction tank B.Sewage water inlet pipe F has on the sewage water inlet pipe branch line F2 of sewage water inlet pipe branch line F2, described tank A2 and is provided with inlet valve A2-1.Circulating water inlet D has on the circulating water inlet branch line D2 of circulating water inlet branch line D2, described tank A2 and is provided with recirculated water inlet valve A2-2.Circulating water outlet pipe E has on the circulating water outlet pipe branch line E2 of circulating water outlet pipe branch line E2, described tank A2 and is provided with recirculated water flowing water Valve A2-3.Sewage drainage pipe G has sewage drainage pipe branch line G2, and the sewage drainage pipe branch line G2 of described tank A2 is provided with water discharging valve A2-4.Fig. 2 illustrate only pond A and includes tank A1 and the situation of tank A2.But in the case of those skilled in the art can be inferred that tank is more than or equal to 3, the facilities of valve and the annexation of pipeline.Additionally, the recirculated water of the water outlet of this utility model recirculated water and water inlet reference retort B moves towards name, it is circulating water outlet pipe that recirculated water flows out the pipeline of retort B, the valve arranged on it is recirculated water flowing water Valve, it is circulating water inlet that recirculated water flows into the pipeline of retort B, and the valve that it is arranged is recirculated water inlet valve.
Include, as a example by tank A1 and tank A2, the trend of this utility model sewage being described by pond A below.Being first turned on the inlet valve A1-1 of tank A1, sewage water flows into tank A1 through pump lifting or gravity through sewage water inlet pipe F and sewage water inlet pipe branch line F1, stops water inlet after water inlet reaches regulation liquid level.Now close tank A1 inlet valve A1-1, open the inlet valve A2-1 of tank A2, the most in succession open recirculated water inlet valve A1-2, the water circulating pump C of tank A1, and recirculated water flowing water Valve A1-3.Water in tank A1 squeezes into retort B through circulating water inlet branch line D1 and circulating water inlet D from inhalant region B2 under the effect of water circulating pump C, and sewage flows from bottom to top.The ozone of retort B flows from bottom to top through air inlet area B1.Sewage reacts at catalyst zone B3 with ozone.By circulating water outlet pipe branch line E1 and circulating water inlet E, circulating water inlet branch line D1 and circulating water inlet D, processed water circulates between pond A1 and retort B, until the water in the A1 of pond reaches requirement stopped reaction.When the reaction is finished, stop water circulating pump C, close the recirculated water inlet valve A1-2 of tank A1, open the water discharging valve A1-4 of tank A1, tank A1 carries out draining, at the end of tank A1 draining, tank A2 water inlet has reached regulation liquid level, now close tank A1 water discharging valve A1-4, close tank A2 inlet valve A2-1, open the inlet valve A1-1 of tank A1, the most in succession open the recirculated water inlet valve A2-2 of tank A2, water circulating pump C, with recirculated water flowing water Valve A2-3, water in tank A2 squeezes into B tank through circulating water inlet branch line D2 and circulating water inlet D from inhalant region B2 under the effect of water circulating pump C, sewage flows from bottom to top, react at catalyst zone B3 with ozone.By circulating water outlet pipe branch line E2 and circulating water inlet E, circulating water inlet branch line D2 and circulating water inlet D, processed water circulates between pond A2 and retort B, until the water in tank A2 reaches requirement stopped reaction.When the reaction is finished, stop water circulating pump C, the recirculated water inlet valve A2-2 of closedown tank A2, open the water discharging valve A2-4 of tank A2.Tank A1 and tank A2 so moves in circles, and has coordinated the course of reaction of whole catalytic ozonation with retort B.
Connected by water circulating pump C between this utility model tank A and retort B, make short stream the reaction caused because of short conductance can be prevented the most thorough repeatedly through catalyst zone B3 through the sewage of packing layer.Water circulating pump C makes the catalyst zone B3 of retort B avoid the occurrence of suspended particle clogging, the tendency of filling surface fouling.
Tank A1 and tank A2 is equivalent to a sequence in running and criticizes state, is sequentially completed into water, circulation, the process of draining, and logical relation is as it is shown on figure 3, TA1 water inlet=TA2 circulates+TA2 draining (T express time).
This utility model catalyst uses the conventional catalyst being applied to sewage disposal, such as the heterogeneous ozone catalytic oxidation catalyst of one or more with activated carbon as carrier, in the metal-oxide such as Supported Manganese, copper, ferrum, cerium, zirconium, nickel；The heterogeneous ozone catalytic oxidation catalyst of one or more with activated alumina as carrier, in the metal-oxide such as Supported Manganese, copper, ferrum, cerium, zirconium, nickel.
When retort B is after using some cycles, and catalyst zone B3 can retain and adsorb a certain amount of float, needs to carry out air-water backwashing.Retort B air inlet area B1 is additionally provided with backwash air pipe B1-3 and air cloth feed channel B1-4；Retort B inhalant region B2 is additionally provided with backwash water inlet pipe B2-1；Retort B clear water zone B4 is additionally provided with backwash water outlet pipe B4-1；Retort B gas collection district B5 is additionally provided with ozone tail gas row mouth B5-1 and air vent B5-2.Opening aerator (not shown) makes air-flow enter retort B through backwash air pipe B1-3, the most inversely by the catalyst zone B3 of retort B, water under high pressure enters retort B from backwash water inlet pipe B2-1, the most inversely by the catalyst zone B3 of retort B, by the packing layer of the collision friction power cleaning catalyst district B3 of air-flow and the shearing force of current and granule, the dirt in the B3 packing layer of catalyst zone is made to depart from.Gas after cleaning is discharged from air vent B5-2, and the water after cleaning is discharged from backwash water outlet pipe B4-1.
Ozone used by this utility model can be generated by conventional ozonizer, then enters retort B from ozone air inlet pipe B1-1 and ozone gas distributing pipeline B1-2.Preferably, ozone gas distributing pipeline B1-2 is provided with aeration plate DN150, plays the effect of abundant gas distribution.Ozone, after being fully contacted with waste water, generates containing ozone, oxygen and the mixed gas of carbon dioxide, and this mixed gas passes clear water zone, collects in gas collection district, after then destroying remaining ozone preferably through ozone tail gas destructor, is discharged in air.
Water quality, scale and process according to waste water require design pond A and the size of retort B, and pond A is usually common Reinforced Concrete Structure, internal non-functional accessory, its single lattice volume=inflow × (T circulates+T draining).Described catalyst zone B3 highly accounts for the 70-80% of retort B total height；Described clear water zone B4 accounts for the 5-10% of retort B total height；Described air inlet area B1 accounts for the 5-10% of retort B total height, described inhalant region B2 and accounts for the 5-10% of retort B total height, described gas collection district B5 and account for the 5-10% of retort B total height.The flow of water circulating pump C according to current at the surface loading 3～5L/m of retort B2/ s designs.Changing according to the response time, amount of inlet water is 5～12m3/h。
Embodiment and comparative example measure COD (COD) with potassium dichromate for oxidant.
It is measured with the potassium bichromate solution of 0.25mol/L concentration.
Reflux: the full glass refluxing unit of band 250mL conical flask.
Heater: electric hot plate or variable resistance electric furnace.
Ferroin indicator solution: weigh 1.485g neighbour phenanthrene quinoline (C12H8N2H2O), 0.695g ferrous sulfate (FeSO4 7H2O) soluble in water, it is diluted to 100mL, is stored in brown bottle.
Ferrous ammonium sulfate standard solution: weigh 39.5g Ferrous ammonium sulfate (C (NH4)2Fe(SO4)2 6H2O) soluble in water, it is slowly added into 20mL concentrated sulphuric acid while stirring, moves in 1000mL volumetric flask after cooling, be diluted with water to graticule, shake up.Before use, demarcate with potassium dichromate standard solution.Scaling method: absorption 10.00mL potassium dichromate standard solution, in 500mL conical flask, is diluted with water to about 110mL, is slowly added to 30mL concentrated sulphuric acid, mixing.After cooling, adding 3 examinations ferrous iron record indicator solution (about 0.15mL), titrate with Ferrous ammonium sulfate, the color from yellow of solution is terminal through aeruginous to bronzing.
C=0.2500 × 10.00/V
In formula: C-Ferrous ammonium sulfate standard solution concentration, mol/L；The consumption of V-Ferrous ammonium sulfate standardized titration, mL.
Sulphuric acid-silver sulfate solution: add 25g silver sulfate in 2500mL concentrated sulfuric acid solution.Placing 1～2 day, shake frequently makes it dissolve.
Mercury bisulfate.: crystallization or powder.
Experimental procedure: take the water sample of 20.00mL mix homogeneously, put the backflow conical flask of 250mL ground, accurately add 10.00ml 0.25mol/L potassium dichromate standard solution and several clean beades or zeolite, connect ground reflux condensing tube, it is slowly added 30ml sulphuric acid-silver sulfate solution from condensing tube is suitable for reading, being shaken gently for conical flask makes solution mix, and is heated to reflux 2 hours (timing when certainly coming to life).
After cooling, slowly rinse condensation tube wall with 90mL water from top, take off conical flask.Overall solution volume must not be less than 140mL, and otherwise too big because of acidity, titration end-point is inconspicuous.
Solution cool down once again or, add three ferroin indicators, titrate with Ferrous ammonium sulfate standard solution, the color from yellow of solution is terminal through aeruginous to bronzing, the consumption of record Ferrous ammonium sulfate standard solution.
While measuring water sample, with 20.00mL distilled water, make blank assay by same operating procedure.The consumption of Ferrous ammonium sulfate standard solution when record titration is blank.
Data process CODcr concentration (with O2Meter) in the examination of (mg/L)=(V0-V1) × C × 8 × 1000/V: the concentration of C-Ferrous ammonium sulfate standard solution, mol/L；
The consumption of Ferrous ammonium sulfate standard solution, mL when V0-titration is blank；
The consumption of Ferrous ammonium sulfate standard solution, mL during V1-Titration Water Sample；
The volume of V-water sample, mL；
8-oxygen (1/2O) molal weight, g/mol.
Embodiment 1:
The combination type device for catalyzing and oxidating ozone shown in Fig. 2 is used to carry out waste water process.Retort B rational height 8.5～9.5m (available depth 7.5～8.5m), diameter 2m, clear water zone 0.5-0.8m.In retort B, bottom arranges the air inlet area B1 and inhalant region B2 of about 1m.The flow of water circulating pump C according to current at the surface loading 4L/m of retort B2/ s designs.
Being sampling of wastewater number shown in Fig. 4 to COD curve chart in waste water or water outlet, before processing, aniline waste water COD is in 150～185mg/L (meansigma methodss 170mg/L).The present embodiment has been carried out twice giving up water treatment experiment, for the first time waste water reaction 30min, for the second time waste water reaction 50min altogether.During waste water reaction 30min, aniline waste water flow is 12m3/ h, ozone dosage is 100mg/L.During waste water reaction 50min, aniline waste water flow is 6m3/ h, ozone dosage is 100mg/L.30min reaction and 50min reaction are sampled respectively.As shown in Figure 4, reaction 30min water outlet COD is averagely at 70mg/L, and 50min water outlet COD is averagely at 30mg/L in reaction.
Comparative example 1:
The device for catalyzing and oxidating ozone using Fig. 1 carries out waste water process.This device height 7-8m (available depth 5.5-6.5m), diameter 3.5m.Before processing, aniline waste water COD is in 150～185mg/L (meansigma methodss 170mg/L).This comparative example has been carried out twice giving up water treatment experiment, for the first time waste water reaction 30min, for the second time waste water reaction 50min altogether.During waste water reaction 30min, aniline waste water flow is 12m3/ h, ozone dosage is 100mg/L.During waste water reaction 50min, aniline waste water flow is 6m3/ h, ozone dosage is 100mg/L.30min reaction and 50min reaction are sampled respectively.As shown in Figure 4, reaction 30min water outlet COD is averagely at 85mg/L, and 50min water outlet COD is averagely at 50mg/L in reaction.
Claims (9)
1. a combination type device for catalyzing and oxidating ozone, it is characterised in that include pond (A) and retort (B),
(A) includes at least two tank in described pond, each tank is connected by circulating water inlet (D) and circulating water outlet pipe (E) with retort (B), and each tank forms closed circulation with retort (B).
Device the most according to claim 1, it is characterized in that, described retort (B) is disposed with from top to bottom: air inlet area (B1), inhalant region (B2), catalyst zone (B3), clear water zone (B4) and gas collection district (B5)；Described inhalant region (B2) is connected with each tank, and described clear water zone (B4) is connected with each tank.
Device the most according to claim 2, it is characterised in that described catalyst zone (B3) highly accounts for the 70-80% of retort (B) total height；Described clear water zone (B4) accounts for the 5-10% of retort (B) total height；Described air inlet area (B1) accounts for the 5-10% of retort (B) total height, described inhalant region (B2) accounts for the 5-10% of retort (B) total height, and described gas collection district (B5) accounts for the 5-10% of retort (B) total height.
Device the most according to claim 3, it is characterised in that described retort (B) diameter is less than 4m.
Device the most according to claim 1, it is characterised in that be connected in parallel between tank.
Device the most according to claim 5, it is characterised in that connect the sewage water inlet pipe of each tank, sewage drainage pipe, circulating water inlet and circulating water outlet pipe are provided with valve；Circulating water inlet is provided with water circulating pump (C).
Device the most according to claim 6, it is characterised in that described pond (A) includes tank (A1) and tank (A2)；
Described tank (A1) passes through circulating water inlet branch line (D1) and the inhalant region (B2) of circulating water inlet (D) coupled reaction tank (B), by the clear water zone (B4) of circulating water outlet pipe branch line (E1) and circulating water inlet (E) coupled reaction tank (B)；It is provided with inlet valve (A1-1) on the sewage water inlet pipe branch line (F1) of described tank (A1), it is provided with recirculated water inlet valve (A1-2) on the circulating water inlet branch line (D1) of described tank (A1), it is provided with recirculated water flowing water Valve (A1-3) on the circulating water outlet pipe branch line (E1) of described tank (A1), sewage drainage pipe branch line (G1) of described tank (A1) is provided with water discharging valve (A1-4)；
Described tank (A2) passes through circulating water inlet branch line (D2) and the inhalant region (B2) of circulating water inlet (D) coupled reaction tank (B), by the clear water zone (B4) of circulating water outlet pipe branch line (E2) and circulating water inlet (E) coupled reaction tank (B)；It is provided with inlet valve (A2-1) on the sewage water inlet pipe branch line (F2) of described tank (A2), it is provided with recirculated water inlet valve (A2-2) on the circulating water inlet branch line (D2) of described tank (A2), it is provided with recirculated water flowing water Valve (A2-3) on the circulating water outlet pipe branch line (E2) of described tank (A2), sewage drainage pipe branch line (G2) of described tank (A2) is provided with water discharging valve (A2-4).
Device the most according to claim 1, it is characterised in that the air inlet area (B1) of described retort (B) is provided with ozone air inlet pipe (B1-1) and ozone gas distributing pipeline (B1-2).
Device the most according to claim 8, it is characterised in that described retort (B) air inlet area (B1) is additionally provided with backwash air pipe (B1-3) and air cloth feed channel (B1-4)；Retort (B) inhalant region (B2) is additionally provided with backwash water inlet pipe (B2-1)；Retort (B) clear water zone (B4) is additionally provided with backwash water outlet pipe (B4-1)；Retort (B) gas collection district (B5) is additionally provided with ozone tail gas row's mouth (B5-1) and air vent (B5-2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620059508.3U CN205472872U (en) | 2016-01-21 | 2016-01-21 | Modular ozone catalytic oxidation device |
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| CN115814813B (en) * | 2022-12-30 | 2024-03-08 | 华能嘉祥发电有限公司 | Anti-hardening catalyst, pretreatment system and pretreatment method |
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