CN109775896A - A kind of device and method of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water - Google Patents
A kind of device and method of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water Download PDFInfo
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- CN109775896A CN109775896A CN201910213352.8A CN201910213352A CN109775896A CN 109775896 A CN109775896 A CN 109775896A CN 201910213352 A CN201910213352 A CN 201910213352A CN 109775896 A CN109775896 A CN 109775896A
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- tail water
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- zoneofoxidation
- ozone
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 52
- 238000004062 sedimentation Methods 0.000 title claims abstract description 46
- 230000001112 coagulating effect Effects 0.000 title claims abstract description 40
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 35
- 238000006385 ozonation reaction Methods 0.000 title claims abstract description 32
- 230000008878 coupling Effects 0.000 title claims abstract description 27
- 238000010168 coupling process Methods 0.000 title claims abstract description 27
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 27
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000005345 coagulation Methods 0.000 claims abstract description 68
- 230000015271 coagulation Effects 0.000 claims abstract description 68
- 239000003054 catalyst Substances 0.000 claims abstract description 41
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- 239000007788 liquid Substances 0.000 claims abstract description 16
- 239000007789 gas Substances 0.000 claims description 25
- 239000010410 layer Substances 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 11
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 239000002356 single layer Substances 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052684 Cerium Inorganic materials 0.000 claims description 6
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 3
- 150000002505 iron Chemical class 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 239000002351 wastewater Substances 0.000 abstract description 12
- 230000015572 biosynthetic process Effects 0.000 abstract description 3
- 230000035484 reaction time Effects 0.000 abstract description 3
- 150000002391 heterocyclic compounds Chemical class 0.000 abstract description 2
- 239000004021 humic acid Substances 0.000 abstract description 2
- 239000006227 byproduct Substances 0.000 abstract 1
- 244000005700 microbiome Species 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 description 14
- 230000008569 process Effects 0.000 description 13
- 239000000126 substance Substances 0.000 description 11
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- 238000005516 engineering process Methods 0.000 description 6
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical class Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 5
- 239000000693 micelle Substances 0.000 description 5
- 239000010865 sewage Substances 0.000 description 5
- 238000004065 wastewater treatment Methods 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
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- 239000002969 artificial stone Substances 0.000 description 2
- 230000003311 flocculating effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010826 pharmaceutical waste Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
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- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
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- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
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- -1 hydroxyl radical free radical Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
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- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 description 1
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- 231100000419 toxicity Toxicity 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to advanced treatment of wastewater technical fields, and in particular to a kind of device and method of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water, which is divided into three functional areas: zoneofoxidation, coagulation area and settling zone, and functional areas are connected；Zoneofoxidation bottom water inlet and air inlet connect gas-liquid mixing jet device, and inside is equipped with catalyst layer；Coagulant dosage device, tube mixer and perpendicular folding plate washer unit are equipped with inside coagulation area；Inclined plate unit is equipped with inside settling zone；Coagulation area and settling zone bottom are equipped with sludge drainage system；Biochemical tail water removes heterocyclic compound and humic acids etc. through zoneofoxidation first, and formation is discharged containing ozone again through coagulation area and settling zone, and depth removes dissolubility microorganism by-product etc. in biochemical tail water；Biochemical tail water is handled using apparatus and method of the present invention, occupied area is small, and the reaction time is short, and can effectively improve ozone, catalyst utilization, reduces coagulant consumption.
Description
Technical field
The invention belongs to advanced treatment of wastewater technical fields, and in particular to a kind of catalytic ozonation coupling coagulating sedimentation is deep
Spend the device and method of purification biochemistry tail water.
Background technique
Wastewater from chemical industry is from a wealth of sources, complicated component, and salt content is high, and difficulty of governance is big, becomes public attention in recent years
Social hotspots.It is mutually tied currently, mainly taking enterprise's pretreatment to focus on garden composite wastewater treatment plant for such waste water
The mode of conjunction, still, this tupe do not consider the complexity of waste component, a large amount of nitrogen heterocycles, multiring aromatic hydrocarbon, nitre
Base benzene type organic strong toxicity, it is difficult to be removed by traditional biochemical process.Therefore, chemical wastewater biochemical tail water how is realized
Advanced treating, have important Significance for Environment.
Coagulant sedimentation is the most common deep treatment method of wastewater treatment in China factory, but precipitation process of coagulation focuses on pair
The removal of total phosphorus is influenced limited to organic matter removal efficiency by complicated water quality.In practical applications generally by coagulant sedimentation
It is combined with other further treatment techniques, is such as combined with the methods of absorption method, membrane separation process, Fenton oxidation, ozone oxidation.It is Chinese special
Sharp application number 201810017810.6 discloses a kind of method of gradient coagulation, adsorption treatment artificial stone's waste water, passes through three-level
Coagulative precipitation tank, adsorption precipitation pond group technology handle artificial stone's waste water, this method amount of consumption of drugs is big, produces that sludge quantity is big, sets
It is standby to take up a large area.For another example Chinese Patent Application No. 201520535667.1 discloses a kind of coagulating treatment and UF membrane combination is useless
Water treatment system realizes that mud-water separation, this method are still difficult to solve the film dirt of organic matter bring by the filtration of microfiltration membranes
Dye and flux depression problem, add somewhat to operating cost.
In existing patent, although Chinese Patent Application No. 201721163647.1 discloses one kind based on catalytic ozonation
And the waste water treatment system of coagulant sedimentation.But this method is only that catalytic ozonation and coagulation are heavy to the removal effect of organic matter
The simple adduction of shallow lake method has no the collaboration removal effect to organic matter.Chinese Patent Application No. 201610367055.5 discloses
A kind of ozone coagulation promoting organic matter removal efficiency mutually promotees synergisting method, realizes that oxidation and coagulation are made simultaneously in same system
With, this method needs additionally prepare Ozone Water under the conditions of pH=3, and it is complicated for operation, and it is primarily adapted for use in low concentration biochemistry tail
Water/drinking water advanced treating.
In conclusion existing coagulant sedimentation can be improved with other further treatment technique joint technology to a certain degree to having
The removal effect of machine object, but there are process flows it is long, reagent consumption is big, complicated for operation the problems such as, in addition, the removal to organic matter
Effect is only the simple adduction of group technology.
Catalytic ozonation technology is that one kind of strong oxidizing property based on ozone, the absorption of catalyst and catalytic performance is advanced
Oxidation technology, oxidation mechanism is mainly the generation of the surface hydroxyl and ozone reaction acceleration hydroxyl radical free radical of catalyst, to water
Middle hardly degraded organic substance has preferable removal ability.The coagulant such as aluminium, molysite can form hydroxyl polynuclear complex after being dissolved in water,
Ozone environment can weaken the zeta current potential of water-borne glue body particle simultaneously.Based on this, a kind of catalytic ozonation coupling coagulation is researched and developed
The device and method of depth of precipitation purification biochemistry tail water, simplification of flowsheet reduce occupied area, shorten the reaction time, reduce
Reaction process energy consumption effectively improves the removal rate of ozone, catalyst utilization and tail Organic substance in water, for biochemical tail water
The great Significance for Environment of advanced treatment process.
Summary of the invention
The present invention solves the above-mentioned technical problems in the prior art, and it is heavy to provide a kind of catalytic ozonation coupling coagulation
The device and method of shallow lake deep purifying biochemical tail water.
To solve the above problems, technical scheme is as follows:
A kind of device of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water, including shell, the shell
Interior setting zoneofoxidation, coagulation area and settling zone；
The zoneofoxidation bottom is equipped with water inlet, air inlet and gas-liquid mixing jet device, and the water inlet and air inlet connect
Enter gas-liquid mixing jet device, catalyst layer is equipped with inside the zoneofoxidation, top is equipped with ozone reflux unit and tail gas absorption fills
It sets；
Tube mixer is arranged in the coagulation area, and the tube mixer is furnished with coagulant dosage device, the coagulation area
It is connected to zoneofoxidation by tube mixer, perpendicular folding plate washer unit is equipped with inside the coagulation area；
The settling zone is connected to coagulation area by bottom, and inside is equipped with inclined plate unit, and side wall is equipped with overflow weir, described to overflow
The bottom Liu Yan is equipped with water outlet diversion pipe；
The coagulation area and settling zone bottom are equipped with sludge drainage system.
Preferably, the number of the tube mixer is 2；The number of the perpendicular folding plate washer unit is 6, for increasing
Water body turbulent fluctuation improves flocculating effect.
Preferably, the inclined plate cell spacing is 60~150mm, for accelerating wadding body to precipitate.
Preferably, catalyst used by the catalyst layer is the beaded catalyst of Metal Supported granular activated carbon, institute
Metal is stated as the combination of any two kinds or more metals in iron, cerium, manganese, zinc, copper, aluminium.
Preferably, the number of plies of the catalyst layer is one or more layers, and single-layer catalyst dosage is 2~4g/L.
Preferably, the sludge drainage system includes sludge bucket and sludge pipe；The sludge bucket outlet at bottom accesses sludge pipe.
Preferably, offgas outlet pipeline is equipped at the top of the zoneofoxidation, setting ozone detects on the offgas outlet pipeline
Device, the offgas outlet pipeline are connected with ozone reflux unit and device for absorbing tail gas respectively by triple valve.
Preferably, gas mixer is arranged in the air inlet, and the ozone reflux unit accesses gas mixer.
A kind of method of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water, comprising the following steps:
Step 1: biochemical tail water and ozone being passed through into water inlet, air inlet is passed through gas-liquid mixing jet device respectively, then led to
Enter zoneofoxidation；
Step 2: the biochemical tail water containing ozone handled through step 1 is mixed by tube mixer with coagulant, subsequently into
Coagulation area；
Step 3: through treated in step 2 coagulation area, water enters settling zone, through settling of floccus separation process qualified discharge.
According to the concentration and component of organic matter in biochemical tail water, catalyst type and the number of plies, ozone concentration and coagulation are adjusted
Agent dosage.Biochemical tail water removes heterocyclic compound and humic acids etc. through zoneofoxidation first, and the water outlet containing ozone of formation passes through again
Coagulation area and settling zone, depth remove dissolved phenols etc. in biochemical tail water.
Preferably, the zoneofoxidation inlet COD concentration range is 50~200mg/L.
Preferably, the zoneofoxidation ozone concentration is 4.0~6.0mg/min；The zoneofoxidation hydraulic detention time is 10
~30min.
Preferably, the coagulant is aluminium system, iron series, any, dosage 80 in ferro-aluminum system inorganic coagulant
~150mg/L.
Preferably, coagulation area's hydraulic detention time is 5~10min.
Preferably, settling zone hydraulic detention time is 15~30min.
Compared with the existing technology, advantages of the present invention is as follows,
(1) installation area of catalytic ozonation of the invention coupling coagulating sedimentation deep purifying biochemical tail water is small,
Reaction time is short, easy to operate, and organic removal rate is high, suitable for the biochemical tail waters containing all kinds of complexity, hardly degraded organic substance, no
It is influenced vulnerable to tail water water quality fluctuation and salinity, there is broad spectrum activity.
(2) device of catalytic ozonation of the invention coupling coagulating sedimentation deep purifying biochemical tail water, by by three
Functional areas are placed in same reaction unit, be can make full use of the ozone in zoneofoxidation water outlet, are significantly improved ozone and coagulation
The utilization rate of agent reduces coagulant consumption, compared with conventional coagulation+ozone combined method, identical ozone, catalyst amounts
The lower present invention can be improved 20%~30% to the removal rate of tail Organic substance in water, at the same dosage of PAC can reduce by 20%~
30%, and different function area can effectively remove different classes of organic matter.
(3) method of catalytic ozonation of the invention coupling coagulating sedimentation deep purifying biochemical tail water, on the one hand smelly
The zeta current potential that oxygen environment is lauched middle colloidal solid reduces, and the hydrolytic polymerization degree of coagulant increases, to make the de- steady formation of micelle
The hydroxyl that the massive floccule body of grain, another aspect catalyst and coagulant surface hydrolysis are formed promotes ozone to generate hydroxyl free
Base, to realize effectively removing for organic matter.
(4) catalyst layer can be set as a floor or multilayer according to catalytic ozonation area Inlet and outlet water water quality in the present invention,
Catalyst utilization is significantly improved, is optimized by carrier to catalyst and metal proportion, can further improve waste water
Treatment effect has broad application prospects in terms of the biochemical tail water improvement containing complicated organic matter.
Detailed description of the invention
Fig. 1 is the structure for the device that a kind of catalytic ozonation of the invention couples coagulating sedimentation deep purifying biochemical tail water
Schematic diagram；
In figure: 1, water inlet；2, air inlet；3, gas-liquid mixing jet device；4, catalyst layer；5, coagulant dosage device；
6, tube mixer；7, folding plate washer unit is erected；8, inclined plate unit；9, sludge bucket；10, sludge pipe；11, overflow weir；12, water outlet is led
Flow tube；13, ozone detector；14, ozone reflux unit；15, device for absorbing tail gas；16, gas mixer；17, shell.
Fig. 2 is the part-structure of the top view of Fig. 1.
Fig. 3 is coagulating sedimentation area of the present invention dosage of PAC compared with the dosage of PAC of single coagulation process.
Fig. 4 is the zeta current potential of zoneofoxidation water-borne glue body particle of the present invention compared with the zeta current potential of raw water.
Fig. 5 is coagulating sedimentation area wadding body partial size of the present invention compared with the wadding body partial size of single coagulation process.
Specific embodiment
Embodiment 1
Handle certain chemical industrial park sewage treatment plant biochemical tail water, COD 95mg/L, a kind of ozone catalytic of the present embodiment
The device and method of oxidation coupling coagulating sedimentation deep purifying biochemical tail water.
A kind of device of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water, including shell 17, the shell
Setting zoneofoxidation, coagulation area and settling zone in body 17；
The zoneofoxidation bottom is equipped with water inlet 1, air inlet 2 and gas-liquid mixing jet device 3, the water inlet 1 and air inlet
Mouth 2 accesses gas-liquid mixing jet devices 3, catalyst layer 4 is equipped with inside the zoneofoxidation, top is equipped with ozone reflux unit 14 and tail
Aspiration receiving apparatus 15；Preferably, it is equipped with offgas outlet pipeline at the top of the zoneofoxidation, ozone is set on the offgas outlet pipeline
Detector 13, the offgas outlet pipeline are connected with ozone reflux unit 14 and device for absorbing tail gas 15 respectively by triple valve；
Gas mixer 16 is arranged in the air inlet 2, and the ozone reflux unit 14 accesses gas mixer 16；
Tube mixer 6 is arranged in the coagulation area, and the tube mixer 6 is furnished with coagulant dosage device 5, the coagulation
Area is connected to zoneofoxidation by tube mixer 6, and perpendicular folding plate washer unit 7 is equipped with inside the coagulation area；Preferably, the tubular type
The number of mixer 6 is 2；The number of the perpendicular folding plate washer unit 7 is 6, for increasing water body turbulent fluctuation, improving flocculation effect
Fruit；
The settling zone is connected to coagulation area by bottom, and inside is equipped with inclined plate unit 8, and side wall is equipped with overflow weir 11, institute
It states 11 bottom of overflow weir and is equipped with water outlet diversion pipe 12；Preferably, 8 spacing of inclined plate unit is 60~150mm, for accelerating wadding
Body precipitating；
The coagulation area and settling zone bottom are equipped with sludge drainage system；Preferably, the sludge drainage system includes 9 He of sludge bucket
Sludge pipe 10；9 outlet at bottom of sludge bucket accesses sludge pipe 10.
The device is divided into three functional areas: zoneofoxidation, coagulation area and settling zone, and functional areas are connected.Wherein, the oxygen
The bottom Hua Qu water inlet 1 and air inlet 2 connect gas-liquid mixing jet device 3, and inside is equipped with catalyst layer 4.Above-mentioned zoneofoxidation is equipped with one
Layer catalyst layer 4, the catalyst are the granular activated carbon of iron, the load of cerium bimetallic, and single-layer catalyst dosage is 2.0g/L, smelly
Oxygen is prepared by high voltage discharge type ozone generator, and the ozone of generation is through micro porous aeration head from bottom to top through gas-liquid mixing jet device
3 are passed through zoneofoxidation, and offgas outlet is equipped with ozone detector 13, enters ozone according to gas outlet ozone concentration part ozone gas
Reflux unit 14 is mixed through gas mixer 16 with ozone；Part ozone gas enters device for absorbing tail gas 15.Ozone concentration
For 4.0mg/min, hydraulic detention time 20min.Biochemical tail water enters from the inlet, and is passed through oxygen through gas-liquid mixing jet device 3
Change area.
The coagulation area is connected to zoneofoxidation by tube mixer, and it is 0.7mg/L that zoneofoxidation, which is formed by ozone concentration,
Water outlet enter coagulation area, 2 tube mixers 6 are arranged in coagulation area, and each mixer is furnished with coagulant dosage device 5, is used for
Dosing coagulant, inside are equipped with 6 perpendicular folding plate washers 7 of waterpower mixing.The settling zone is connected to coagulation area by bottom, is inside equipped with
Inclined plate unit 8, inclined plate spacing are 110mm, and 11 bottom of side wall overflow weir is equipped with water outlet diversion pipe 12.Through treated in coagulation area water
Into settling zone, through settling of floccus separation process qualified discharge；Coagulation area and settling zone bottom are equipped with sludge bucket 9 and sludge pipe
10.Above-mentioned 10% polymeric aluminum chlorides solution of coagulation area (10% is mass fraction, similarly hereinafter) dosage is 80mg/L, tube mixer
Flow velocity is 1.0m/s, hydraulic detention time 8min.Treated water is through settling of floccus separation process qualified discharge, sedimentation time
For 20min.
Embodiment 2:
Handle certain pharmaceutical waste water biochemical tail water, COD 147mg/L, a kind of catalytic ozonation of the present embodiment
The device and method for coupling coagulating sedimentation deep purifying biochemical tail water changes each operation ginseng using device same as Example 1
Number, carrying out practically are as follows: the zoneofoxidation is equipped with two catalyst layers, and single-layer catalyst dosage is 3g/L, and ozone concentration is
4.8mg/min, hydraulic detention time 25min.The coagulation area is connected to zoneofoxidation by tube mixer, zoneofoxidation institute shape
At ozone concentration be 0.8mg/L water outlet enter coagulation area.Above-mentioned 12% polymeric aluminum chlorides solution dosage of coagulation area is
100mg/L, tube mixer flow velocity are 1.0m/s, hydraulic detention time 8min.Treated, and water was separated through settling of floccus
Journey qualified discharge, sedimentation time 25min.
Embodiment 3:
Handle certain petrochemical wastewater biochemical tail water, COD 190mg/L, a kind of catalytic ozonation coupling of the present embodiment
The device and method of coagulating sedimentation deep purifying biochemical tail water changes each operating parameter using device same as Example 1, tool
Running body is as follows: the catalytic ozonation area is equipped with two catalyst layers, which is iron, cerium, three Metal Supported of zinc
Granular activated carbon, single-layer catalyst dosage are 4g/L, ozone concentration 5.6mg/min, dwell time of sewage 30min.Institute
It states coagulation area and is connected to zoneofoxidation by tube mixer, zoneofoxidation is formed by the water outlet that ozone concentration is 0.9mg/L and enters
Coagulation area.Above-mentioned 15% polymeric aluminum chlorides solution dosage of coagulation area is 120mg/L, and tube mixer flow velocity is 1.0m/s, water
The power residence time is 10min.Treated water is through settling of floccus separation process qualified discharge, sedimentation time 30min.
Embodiment 4:
Certain chemical industrial park sewage treatment plant biochemical tail water is handled, a kind of ozone of COD 160mg/L, the present embodiment are urged
The device and method for changing oxidation coupling coagulating sedimentation deep purifying biochemical tail water changes each fortune using device same as Example 1
Row parameter, carrying out practically are as follows: the catalytic ozonation area is equipped with two catalyst layers, which is manganese, copper, three gold medal of aluminium
Belong to the granular activated carbon of load, single-layer catalyst dosage is 4g/L, ozone concentration 5.0mg/min, and dwell time of sewage is
20min.The coagulation area is connected to zoneofoxidation by overflow port, and zoneofoxidation is formed by the water outlet that ozone concentration is 0.8mg/L
Into coagulation area.Above-mentioned 15% polymeric aluminum chlorides solution dosage of coagulation area is 110mg/L, and tube mixer flow velocity is 1.0m/
S, hydraulic detention time 10min.Treated water is through settling of floccus separation process qualified discharge, sedimentation time 25min.
By Examples 1 to 4, each embodiment is as shown in table 1 to organic matter removal situation in waste water.
Table 1 gives up the removal situation unit of Organic substance in water: mg/L
As shown in table 1, biochemistry of the ozone catalytic coupling coagulation-settlement process to separate sources, different organic pollutant loads
Tail water can be effectively treated, and urban wastewater treatment firm discharge primary standard can be fully achieved in water outlet COD after processing.
By Examples 1 to 4, coagulating sedimentation area dosage of PAC is as shown in Figure 3 in each embodiment.
As shown in figure 3, dosage of PAC reduces 20%~27% compared with single coagulation process.
By Examples 1 to 4, the zeta current potential of zoneofoxidation colloidal solid is as shown in Figure 4 in each embodiment.
As shown in figure 4, ozone can change the electrification on micelle surface in biochemical tail water compared with untreated biochemical tail water
The zeta current potential of situation, micelle reduces by 2.7~7.1mV, and the hydration shell on micelle surface weakens therewith, is conducive to the de- steady of micelle.
By Examples 1 to 4, the wadding body partial size that coagulating sedimentation area is formed in each embodiment is as shown in Figure 5.
As shown in figure 5, the wadding body partial size that aluminium polychloride coagulant is formed in the present invention increases compared with single coagulation process
Add 40~70%.
Embodiment 5:
Comparative example: the present invention and conventional coagulation+ozone combined method compare.
Certain chemical industrial park sewage treatment plant biochemical tail water is handled, COD 95mg/L is combined using conventional coagulation+ozone
Method, the specific steps of which are as follows: being sequentially connected coagulating sedimentation area, zoneofoxidation along waste water circulating direction.The coagulating sedimentation area
10% polymeric aluminum chlorides solution dosage is 80mg/L.Whipping process in coagulative precipitation tank is divided into two stages, the first stage,
Mixing speed is 100r/min, mixing time 1min；Second stage, mixing speed 20r/min, mixing time 8min.
Water through flocculation treatment is separated by solid-liquid separation by inclined-plate clarifying basin, sedimentation time 20min.The zoneofoxidation water inlet and settling zone
Water outlet connection.Zoneofoxidation is equipped with one layer of catalyst layer, which is the granular activated carbon of iron, the load of cerium bimetallic, single
Layer catalyst amounts are 2g/L, and ozone prepared by high voltage discharge type ozone generator, the ozone of generation through hole aeration head oneself
Catalytic ozonation tower is passed through on down, and offgas outlet is equipped with ozone detector, according to gas outlet ozone concentration part ozone
Gas enters ozone reflux unit and mixes through gas mixer with ozone；Part ozone gas enters device for absorbing tail gas.It is smelly
Oxygen concentration is 4.0mg/min, hydraulic detention time 20min.Water outlet is collected again.
Embodiment 6:
Comparative example: the present invention and conventional coagulation+ozone combined method compare.
Handle certain pharmaceutical waste water biochemical tail water, COD 147mg/L, using conventional coagulation+ozone combined method,
Its device and process are same as Example 4, change each operating parameter, and carrying out practically is as follows: the coagulating sedimentation area 12% polymerize
Liquor alumini chloridi dosage is 100mg/L.Whipping process in coagulative precipitation tank is divided into two stages, first stage, stirring speed
Degree is 120r/min, mixing time 1min；Second stage, mixing speed 20r/min, mixing time 8min.Through flocculating
The water of processing is separated by solid-liquid separation by inclined-plate clarifying basin, sedimentation time 25min.The zoneofoxidation is equipped with two catalyst layers, single
Layer catalyst amounts are 3g/L, ozone concentration 4.8mg/min, hydraulic detention time 25min.
Embodiment 7:
Comparative example: the present invention and conventional coagulation+ozone combined method compare.
Handle certain petrochemical wastewater biochemical tail water, COD 190mg/L, using conventional coagulation+ozone combined method, dress
It sets and process is same as Example 4, change each operating parameter, carrying out practically is as follows: 15% polyaluminium of coagulating sedimentation area
Aluminum solutions dosage is 120mg/L.Whipping process in coagulative precipitation tank is divided into two stages, and the first stage, mixing speed is
130r/min, mixing time 1min；Second stage, mixing speed 20r/min, mixing time 10min.Through flocculation treatment
Water pass through inclined-plate clarifying basin be separated by solid-liquid separation, sedimentation time 30min.The zoneofoxidation is equipped with two catalyst layers, the catalysis
Agent is the granular activated carbon of iron, cerium, three Metal Supported of zinc, and single-layer catalyst dosage is 4g/L, ozone concentration 5.6mg/
Min, hydraulic detention time 30min.
By embodiment 5~7, each embodiment is as shown in table 2 to organic matter removal situation in waste water.
Table 2 gives up the removal situation unit of Organic substance in water: mg/L
As shown in table 2, in the case where influent quality and operating parameter are consistent, conventional coagulation+ozone combined method
Middle coagulating sedimentation area is lower than 10% to the removal rate of organic matter, and total COD removal rate is only 30%~47%.The present invention (table 1,
Examples 1 to 3) it is compared with conventional coagulation+ozone combined method (table 2, embodiment 5~7): ozone oxidation area can promote subsequent
Coagulating sedimentation area acts on the removal of organic matter, and total COD removal rate removal rate improves 24%~28%.
It should be noted that above-described embodiment is only presently preferred embodiments of the present invention, there is no for the purpose of limiting the invention
Protection scope, the equivalent substitution or substitution made on the basis of the above all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of device of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water, which is characterized in that including shell,
Setting zoneofoxidation, coagulation area and settling zone in the shell；
The zoneofoxidation bottom is equipped with water inlet, air inlet and gas-liquid mixing jet device, and the water inlet and air inlet access gas
Liquid mixing jet device, the zoneofoxidation inside is equipped with catalyst layer, top is equipped with ozone reflux unit and device for absorbing tail gas；
Tube mixer is arranged in the coagulation area, and the tube mixer is furnished with coagulant dosage device, the coagulation area and oxygen
Change area to be connected to by tube mixer, perpendicular folding plate washer unit is equipped with inside the coagulation area；
The settling zone is connected to coagulation area by bottom, and inside is equipped with inclined plate unit, and side wall is equipped with overflow weir, the overflow weir
Bottom is equipped with water outlet diversion pipe；
The coagulation area and settling zone bottom are equipped with sludge drainage system.
2. the device of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water as described in claim 1, feature
It is, the number of the tube mixer is 2；The number of the perpendicular folding plate washer unit is 6；The inclined plate cell spacing is
60~150mm.
3. the device of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water as described in claim 1, feature
Be, catalyst used by the catalyst layer be Metal Supported granular activated carbon beaded catalyst, the metal be iron,
Cerium, manganese, zinc, copper, in aluminium any two kinds or more metals combination.
4. the device of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water as described in claim 1, feature
It is, the number of plies of the catalyst layer is one or more layers, and single-layer catalyst dosage is 2~4g/L.
5. the device of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water as described in claim 1, feature
It is, the sludge drainage system includes sludge bucket and sludge pipe；The sludge bucket outlet at bottom accesses sludge pipe.
6. the device of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water as described in claim 1, feature
It is, offgas outlet pipeline is equipped at the top of the zoneofoxidation, ozone detector, the tail gas are set on the offgas outlet pipeline
Outlet conduit is connected with ozone reflux unit and device for absorbing tail gas respectively by triple valve；Gas mixing is arranged in the air inlet
Device, the ozone reflux unit access gas mixer.
7. a kind of method of catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water, which is characterized in that including with
Lower step:
Step 1: biochemical tail water and ozone being passed through into water inlet, air inlet is passed through gas-liquid mixing jet device respectively, then pass to oxygen
Change area；
Step 2: the biochemical tail water containing ozone handled through step 1 is mixed by tube mixer with coagulant, subsequently into coagulation
Area；
Step 3: through treated in step 2 coagulation area, water enters settling zone, through settling of floccus separation process qualified discharge.
8. the method for catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water as claimed in claim 7, special
Sign is that the zoneofoxidation inlet COD concentration range is 50~200mg/L.
9. the method for catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water as claimed in claim 7, special
Sign is that the zoneofoxidation ozone concentration is 4.0~6.0mg/min；The zoneofoxidation hydraulic detention time is 10~30min；
Coagulation area's hydraulic detention time is 5~10min；Settling zone hydraulic detention time is 15~30min.
10. the method for catalytic ozonation coupling coagulating sedimentation deep purifying biochemical tail water as claimed in claim 7, special
Sign is, the coagulant is aluminium system, iron series, any in ferro-aluminum system inorganic coagulant, and dosage is 80~150mg/
L。
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