CN104909504A - High-salt high-COD wastewater treatment system and method - Google Patents
High-salt high-COD wastewater treatment system and method Download PDFInfo
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- CN104909504A CN104909504A CN201510332968.9A CN201510332968A CN104909504A CN 104909504 A CN104909504 A CN 104909504A CN 201510332968 A CN201510332968 A CN 201510332968A CN 104909504 A CN104909504 A CN 104909504A
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- 238000000034 method Methods 0.000 title claims abstract description 40
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 17
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 99
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 87
- 230000003647 oxidation Effects 0.000 claims abstract description 84
- 239000002351 wastewater Substances 0.000 claims abstract description 65
- 230000003197 catalytic effect Effects 0.000 claims abstract description 34
- 238000009826 distribution Methods 0.000 claims abstract description 32
- 239000010865 sewage Substances 0.000 claims abstract description 17
- 239000000945 filler Substances 0.000 claims abstract description 8
- 230000015556 catabolic process Effects 0.000 claims abstract description 7
- 238000006731 degradation reaction Methods 0.000 claims abstract description 7
- 238000012856 packing Methods 0.000 claims description 33
- 230000008569 process Effects 0.000 claims description 24
- 150000003839 salts Chemical class 0.000 claims description 23
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical group [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 claims description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims description 6
- 150000004706 metal oxides Chemical group 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 239000008346 aqueous phase Substances 0.000 claims description 3
- 230000000593 degrading effect Effects 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 238000006555 catalytic reaction Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 20
- 238000006243 chemical reaction Methods 0.000 abstract description 14
- 239000007800 oxidant agent Substances 0.000 abstract description 8
- 239000003054 catalyst Substances 0.000 abstract description 6
- 230000002301 combined effect Effects 0.000 abstract 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- 238000005265 energy consumption Methods 0.000 description 6
- 230000004913 activation Effects 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 229910010413 TiO 2 Inorganic materials 0.000 description 3
- -1 hydroxyl free radical Chemical class 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 238000006056 electrooxidation reaction Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000006385 ozonation reaction Methods 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000011949 solid catalyst Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000010504 bond cleavage reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000013522 chelant Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010786 composite waste Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
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- 239000000047 product Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 235000019600 saltiness Nutrition 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a high-salt high-COD wastewater treatment system and method. The system comprises a reaction tank, an electrocatalytic oxidation reactor and an oxidation ejector connected with oxidizing agent supply equipment, wherein a filler layer is arranged at the middle part of the reaction tank; a water distribution unit for distributing water to the filler layer is arranged below the filler layer; a water inlet communicated with raw water is formed in the bottom of the reaction tank, and a sewage outlet is formed in the upper part; a water-in end and a water-out end of the electrocatalytic oxidation reactor are connected with the sewage outlet and water inlet of the reaction tank respectively; and an inlet and an outlet of the oxidation ejector are communicated with the raw water and the filler layer respectively. Multiple treatment systems can be connected in series for use. According to the invention, the high-salt high-COD wastewater is treated by multiple catalytic oxidation technologies and electrocatalytic oxidation technologies; and under the combined effects of hydroxyl radical, an oxidizing agent and a catalyst, the COD degradation rate of the high-salt high-COD wastewater and the utilization rate of the oxidizing agent are very high, and efficient and energy-saving treatment of the high-salt high-COD wastewater can be realized.
Description
Technical field
The present invention relates to a kind of Waste Water Treatment and method, be specifically related to a kind for the treatment of system and the method that are applicable to various high salt high-COD waste water, belong to environment-protective water process field.
Background technology
The process of high salt high-COD waste water is a difficult problem for sewage treatment industry always, because the saltiness of waste water is high, B/C value is too little, and these type of high-salt wastewater great majority have bio-toxicity, cause traditional biochemical processing method to be not too applicable to process this type of waste water, and treatment effect is bad.
The high salt high-COD waste water treatment technology used at present, as Shi Shi catalytic oxidation (CWO/WAO), photochemical oxidation method, sonochemical oxidation, Ozonation, electrochemical oxidation process, Fenton oxidation method, Fenton-like method etc., mostly all there is technique comparatively complicated, and the defect that equipment manufacturing cost is expensive, operational condition is harsh.Shi Shi catalytic oxidation needs to operate under high-temperature and high-pressure conditions, and energy expenditure is large, dangerous high; Then there is the shortcomings such as oxidizing condition is single, occupation area of equipment is large, oxidation efficiency is low in photochemical oxidation method, sonochemical oxidation, Ozonation and electrochemical oxidation process etc.; Then there is the shortcomings such as medicament input amount is large, sludge quantity is large in Fenton oxidation method, Fenton-like method etc.Therefore, a kind of efficient, energy-conservation high salt high-COD waste water treatment system is developed and method is very necessary.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of efficient energy-saving and the low high salt high-COD waste water treatment system of comprehensive energy consumption.In addition, present invention also offers a kind for the treatment of process of high salt high-COD waste water.
For achieving the above object, the present invention is by the following technical solutions:
A kind of high salt high-COD waste water treatment system, comprise retort, electrocatalysis oxidation reaction device and the oxidation injector be connected with oxygenant supply equipment, wherein: the middle part of described retort is provided with packing layer, the below of described packing layer is provided with the water distribution unit to packing layer water distribution, the bottom of described retort is provided with a water inlet logical with former aqueous phase, its top is provided with a sewage outlet, the water intake end of described electrocatalysis oxidation reaction device and water side are connected with the sewage outlet of retort and water inlet respectively, the entrance of described oxidation injector communicates with former water and packing layer respectively with outlet.
Preferably: described packing layer is provided with catalyzer and/or inertia filtrate; Described catalyzer is metal oxide, is carried on the metal on carrier or metal oxide, at least one in porous material.
Preferably: described oxygenant is ozone or hydrogen peroxide; The electrode of described electrocatalysis oxidation reaction device is diamond alloy electrode.
Preferably: described water distribution unit comprises the water distribution pipeline that is connected with water inlet and is located in water distribution pipeline, for the water-distribution nozzle to packing layer water distribution.
Further: the top of described retort is provided with waste gas outlet, above sewage outlet, water out up to standard is provided with.
Preferably: described oxidation injector nozzle distributes symmetrically and evenly and has certain obliquity.
Preferably: described electric catalysis reactor can be arranged in parallel multiple stage.
Preferably: described oxidation injector can be arranged in parallel multiple stage.
Preferably: described treatment system can use in multiple series connection.
Another object of the present invention, a kind of method utilizing high salt high-COD waste water treatment system as above to process high salt high-COD waste water, its step comprises:
1) the former water of effluent part enters in retort through water inlet, and through water distribution unit water distribution uniformity on packing layer, another part waste water enters oxidation injector, deliver to after mixing with oxygenant on the packing layer of retort, after through water distribution unit, the waste water be arranged on packing layer mixes, the COD of waste water under the combined action of filler and oxygenant in degrading waste water;
2) waste water after packing layer catalytic oxidation treatment enters electrocatalysis oxidation device from sewage outlet and carries out catalytic oxidation process, with after after waste water circulation after catalytic oxidation process mixes to the former water of retort water inlet and waste water, part waste water enters in retort, another part waste water also again carry out step 1 after being again introduced into and mix with oxygenant in oxidation injector in feeding retort) in waste water COD degradation treatment, circulation like this repeatedly, until the waste water after process meets the requirement of qualified discharge.
Beneficial effect of the present invention is, the present invention adopts multinomial catalytic oxidation technologies and electro-catalytic oxidation technology to process high salt high-COD waste water, high salt high-COD waste water is under the compound action of hydroxyl free radical, oxygenant and catalyzer, the COD degradation rate of waste water and the utilization ratio of oxygenant all very high, the energy-efficient process of high salt high-COD waste water can be realized.The comprehensive energy consumption for the treatment of system of the present invention is very low, and its comprehensive energy consumption is roughly equivalent to 80% of traditional high-level oxidation technology, and treatment system of the present invention also has filtering function concurrently, effectively can control the suspended substance in water outlet.
Accompanying drawing explanation
Fig. 1 shows the structural representation of high salt high-COD waste water treatment system of the present invention;
Fig. 2 shows the reaction mechanism of heterogeneous catalytic oxidation;
Fig. 3 shows the structural representation of described high salt high-COD waste water treatment system according to embodiments of the invention 1.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
As shown in Figure 1, high salt high-COD waste water treatment system of the present invention, comprise retort 1, electrocatalysis oxidation reaction device 2 and oxidation injector 3, wherein: the bottom of described retort 1 is provided with a water inlet connected with former aqueous phase, its top is provided with a sewage outlet, and the water intake end of described electrocatalysis oxidation reaction device 2 and water side are connected with the sewage outlet of retort 1 and water inlet respectively, the middle part of described retort 1 is provided with packing layer 11, in the present invention, the packing height of described packing layer 11 can be determined according to carrying out adjustment the duration of contact of sewage and filler, as long as guaranteeing that its end face crosses water flow velocity is 6-8m/h, described packing layer 11 is provided with the inertia filtrate promoting and accelerate the active catalyst that COD is oxidized and/or its filteration that can be evenly arranged according to COD amount and the composition of water, the below of described packing layer 11 is provided with water distribution unit 12, described water distribution unit 12 comprises the water distribution pipeline that is connected with water inlet and is connected with water distribution pipeline, for carrying out the water-distribution nozzle of water distribution on packing layer 11, described oxidation injector 3 is connected with the oxygenant supply equipment of outside, its entrance is connected with packing layer 11 with former water respectively with outlet, and the exit end of described oxidation injector 3 is preferably provided with a water-distribution nozzle, carry out catalyzed oxidation to be evenly arranged on packing layer 11 by the former water being mixed with oxygenant.
In the present invention, described retort 1 can be one for holding water pot or the pond of sewage, its cross section crosses water flow velocity 6-8m/h, the total residence time of waste water in retort 1 is 4-12 hour, a water outlet up to standard is also provided with above the sewage outlet of described retort 1, and the top of retort 1 also can be provided with a waste gas outlet, for the waste gas of generation will be reacted in retort from Base top contact retort 1.The preferred diamond alloy electrode of electrode of described electrocatalysis oxidation reaction device 2, according to the difference of water quality, the current density of described electrode controls at 1000-20000A/m
2; Described electrocatalysis oxidation reaction device 1 can adopt any electrocatalysis oxidation reaction device structure adopting catalytic oxidation or equivalent way to carry out catalyzed oxidation known in the art, does not repeat them here; The vacuum acquirement device of described oxidation injector 3 for utilizing fluid to come transferring energy and quality, the current of certain pressure are adopted to be sprayed by oxygenant by nozzle, its concrete structure is the state of the art, do not repeat them here, but preferably, the nozzle of described oxidation injector 3 preferably distributes symmetrically and evenly and has certain obliquity; In the present invention, described oxygenant is the strong oxidizer such as ozone, hydrogen peroxide; And in the COD in waste water, in oxidation injector 3, the dosage of oxygenant is: oxygenant: COD=1-1.4:1 (mol ratio), the volumetric flow rate of oxygenant is 0.8-1.2:1 with the volume flow ratio entering the waste water be oxidized in injector 3.In addition, Waste Water Treatment of the present invention also comprises connecting pipe for connecting each equipment and recycle pump; And electrocatalysis oxidation reaction device 2 that multiple stage is arranged in parallel can be comprised to improve catalytic oxidation efficiency; Described oxidation injector 3 also can use in multiple stage parallel connection.Further, Waste Water Treatment of the present invention can use, with lifting waste water processing efficiency in multiple series connection.
Adopt the present invention's Waste Water Treatment as above to process high salt high-COD waste water, its treating processes comprises the following steps:
1) the former water of effluent part enters in retort 1 through the water inlet be located at bottom retort 1, through water distribution unit 2 water distribution uniformity on packing layer 11, another part waste water is through being pumped in oxidation injector 3, mix with oxygenant and send on the packing layer 11 of retort 1, after mixing through water distribution unit 2 waste water be evenly arranged on packing layer 11, the COD of waste water under the combined action of filler (catalyzer and/or filtrate) and oxygenant in degrading waste water;
2) after packing layer 11 catalytic oxidation treatment, waste water to be pressurized to electrocatalysis oxidation device 2 through recycle pump from sewage outlet and to carry out catalytic oxidation process, with after after the effluent cycle being rich in hydroxyl free radical after catalytic oxidation process mixes to the water inlet of retort 1 with the former water of waste water, part waste water enters in retort 1, another part waste water again first after mixing with oxygenant in recycle pump press-in oxidation injector 3 in feeding retort 1 again carry out step 1) in waste water COD degradation treatment, circulation like this repeatedly, until the waste water after process meets the requirement of qualified discharge.In retort 1, the product water up to standard at top can discharge retort 1 qualified discharge or recovery through the water out up to standard on retort 1 top, and the waste gas that in retort, reaction produces draws retort 1 from the waste gas outlet at top.
The present invention adopts multinomial catalytic oxidation technologies and electro-catalytic oxidation technology to process high salt high-COD waste water.Wherein, as shown in the multi-phase catalytic oxidation mechanism (oxygenant is ozone) of Fig. 2, multinomial catalytic oxidation technologies take solid catalyst as carrier, and the selection of solid catalyst is the key whether this technology has efficient oxidation usefulness, and its effect is mainly manifested in:
1, adsorb organic compound, for the catalyzer that those loading capacities are larger, when water and catalyst exposure, first the organism in water is attracted to the surface of these catalyzer, is formed with the surface chelate compound of affinity, makes oxygenant more efficient;
2, catalytic activation oxidizer molecule, utilize the high-efficiency catalytic activity of catalyzer, effective catalytic activation oxidizer molecule, oxidizer molecule is easy to decompose the free radical produced as the high oxidative of hydroxyl radical free radical and so under the effect of this kind of catalyzer, thus improves the oxidation efficiency of oxygenant;
3, the synergy of absorption and activation, can efficient adsorption organic pollutants, simultaneously again can catalytic activation oxidizer molecule, produce the free radical of high oxidative, on the surface of catalyzer, the activation synergy of the adsorption and oxidation agent of organic pollutant, and then obtain better catalytic oxidation effect.In the present invention, catalyzer that can be different according to the different choice of former aqueous nature, optional catalyzer has: metal oxide, as Al
2o
3, TiO
2, MnO
2in at least one, be carried on the metal on carrier or metal oxide, as Cu/TiO
2, Cu/Al
2o
3, TiO
2/ Al
2o
3in at least one, or the porous material had compared with bigger serface is as gac etc.
Electro-catalytic oxidation technology puts as energy source, and wherein, electro catalytic electrode is the key point of this technology.In general, electro catalytic electrode is made up of surfacing, basic electrode, carrier and surface tissue.Electro catalytic electrode can conduct electricity, and can activate again to reactant, has good electroconductibility, high catalytic activity, high chemical stability and excellent mechanical property concurrently.The preferred diamond alloy electrode of the present invention (BDD electrode), its reaction equation is as follows:
1, selective combustion reaction:
BDD+H
2O→BDD(·OH)+H
++e
-
BDD(·OH)+R·→BDD+mCO
2+nH
2O+H
++e
-
2, competing reaction:
BDD(·OH)→BDD+1/2O
2+H
++e
-
3, scission reaction:
RH+BDD(·OH)→R·+H
2O+BDD
R·+O
2→ROO·
ROO·+RH→ROOH+R·
4, cathodic reduction reaction:
NO
3 -+3H
2O+5e
-＝1/2N
2+6OH
-
5, other reaction:
Cl
-·+Cl
-·→Cl
2+2e
-
Cl
2+H
2O→HOCl+H
++Cl
-
2NH
4 ++3HOCl→N
2+5H
++3Cl
-+3H
2O
In general, heterogeneous catalytic oxidation technology and electro-catalytic oxidation technology all have excellent oxidation susceptibility, wherein, the reaction of multinomial catalytic oxidation technologies is gentleer, energy consumption is lower, but thorough to the oxidation of the larger molecular organics of some difficult degradations, and for the higher waste water of heavy metal content, the usefulness of catalyzer then can be suppressed (poisoning of catalyst).And the reaction process of electro-catalytic oxidation technology is comparatively violent, oxidation is comparatively thorough, but energy consumption is higher, and in general, salts contg is higher, and catalytic oxidation effect is better, but energy consumption is also higher.
The present invention adopts heterogeneous catalytic oxidation technology and electro-catalytic oxidation technology to combine, give full play to the advantage of heterogeneous catalytic oxidation technology and electro-catalytic oxidation technology, waste water carries out catalytic oxidation and electrocatalysis oxidation reaction with the internal circulating load being several times as much as system water inlet at system internal recycle, organic DeR in waste water is made to be able to continual carrying out, the processing efficiency of lifting waste water, after repeatedly circulating, organism in waste water thoroughly can be degraded or be reduced extremely low-level, meets the requirement of qualified discharge or reuse.
Embodiment 1
Adopt the high salt high-COD waste water that the present invention's treatment system described above and method process chemical industrial park produce, wherein: wastewater flow rate is 50t/h, specific conductivity 30000 μ s/cm, COD600ppm.
For processing above-mentioned waste water, the mode that treatment system of the present invention adopts two Cascade Systems to run, and, as shown in Figure 2: 1) parallel connection is provided with the retort 1 of two D4.0 × H9.0m altogether, and packing layer 11 adopts coke to make catalyzer, and loading height is 3.6m; 2) each retort is respectively connected with two oxidation injectors 3 be arranged in parallel and corresponding recycle pump, is provided with 4 oxidation injectors 3 in whole treatment system altogether, i.e. four oxidation loops, and oxygenant adopts ozone, ozone amount 4kg/h, every bar loop 50t/h; 3) each retort is also respectively connected with three electrocatalysis oxidation reaction devices 2 be arranged in parallel and corresponding recycle pump, namely be provided with six circulation loops in whole treatment system altogether, adopt BDD electrode, electric current 125A, direct supply power 37kW, every bar loop 25t/h.
For single reaction tank, the operational process of system is as follows: the waste water of 25t/h enters bottom retort 1, with mixing from 3 circulation loop water of 75t/h, composite waste is 100t/h, then 2 oxidation loops are entered into, oxidation injector 3 is entered after pressurization, enter in retort 1 after mixing with ozone, evenly catalyst layer is passed through under the effect of water distribution unit, in most catalyst layer, COD in waste water is by ozone degradation, subsequently, water in the middle part of the retort of 75t/h enters circulation loop, after recycle pump pressurization, entering electrocatalysis oxidation reaction device 2 with the COD in further oxidized waste water enters next reaction cycle, the water of the 25t/h on retort top is outside qualified discharge mouth drain tank, the waste gas outlet of the oxidation gaseous effluent produced in retort 1 through retort 1 top is discharged.Chemical industrial park high slat-containing wastewater is after as above processing, and water outlet COD is the total removal amount of 60ppm, COD is 25kg/h.
The present invention is by preferred embodiment having carried out detailed explanation.But, by studying carefully above, to the change of each embodiment with to increase also be that one of ordinary skill in the art institute is apparent.Being intended that all these changes and increasing of applicant has dropped in the protection domain of the claims in the present invention.Term used herein is only and is illustrated specific embodiment, and it is also not intended to limit invention.Unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) are all identical with the understanding of one of ordinary skill in the art of the present invention.Known function or structure are for briefly and clearly consider or repeat no more.
Claims (10)
1. one kind high salt high-COD waste water treatment system, it is characterized in that: comprise retort, electrocatalysis oxidation reaction device and the oxidation injector be connected with oxygenant supply equipment, wherein: the middle part of described retort is provided with packing layer, the below of described packing layer is provided with the water distribution unit to packing layer water distribution, the bottom of described retort is provided with a water inlet logical with former aqueous phase, its top is provided with a sewage outlet, the water intake end of described electrocatalysis oxidation reaction device and water side are connected with the sewage outlet of retort and water inlet respectively, the entrance of described oxidation injector communicates with former water and packing layer respectively with outlet.
2. treatment system according to claim 1, is characterized in that: described packing layer is provided with catalyzer and/or inertia filtrate; Described catalyzer is metal oxide, is carried on the metal on carrier or metal oxide, at least one in porous material.
3. treatment system according to claim 1, is characterized in that: described oxygenant is ozone or hydrogen peroxide; The electrode of described electrocatalysis oxidation reaction device is diamond alloy electrode.
4. treatment system according to claim 1, is characterized in that: described water distribution unit comprises the water distribution pipeline that is connected with water inlet and is located in water distribution pipeline, for the water-distribution nozzle to packing layer water distribution.
5. treatment system according to claim 1, is characterized in that: the top of described retort is provided with waste gas outlet, is provided with water out up to standard above sewage outlet.
6. treatment system according to claim 1, is characterized in that: described oxidation injector nozzle distributes symmetrically and evenly and has certain obliquity.
7. treatment system according to claim 1, is characterized in that: described electric catalysis reactor can be arranged in parallel multiple stage.
8. treatment system according to claim 1, is characterized in that: described oxidation injector can be arranged in parallel multiple stage.
9. according to the treatment system in claim 1-8 described in any one, it is characterized in that: described treatment system can use in multiple series connection.
10. the method utilizing high salt high-COD waste water treatment system as claimed in claim 1 to process high salt high-COD waste water, is characterized in that: comprise the following steps:
1) the former water of effluent part enters in retort through water inlet, and through water distribution unit water distribution uniformity on packing layer, another part waste water enters oxidation injector, deliver to after mixing with oxygenant on the packing layer of retort, after through water distribution unit, the waste water be arranged on packing layer mixes, the COD of waste water under the combined action of filler and oxygenant in degrading waste water;
2) waste water after packing layer catalytic oxidation treatment enters electrocatalysis oxidation device from sewage outlet and carries out catalytic oxidation process, with after after waste water circulation after catalytic oxidation process mixes to the former water of retort water inlet and waste water, part waste water enters in retort, another part waste water also again carry out step 1 after being again introduced into and mix with oxygenant in oxidation injector in feeding retort) in waste water COD degradation treatment, circulation like this repeatedly, until the waste water after process meets the requirement of qualified discharge.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105585180A (en) * | 2015-12-21 | 2016-05-18 | 江苏中金环保科技有限公司 | Efficient reverse-osmosis concentrated water treatment method |
| CN108069491A (en) * | 2016-11-18 | 2018-05-25 | 北京化工大学 | For the electrocatalytic oxidation method and reaction unit of used water difficult to degradate |
| CN108178283A (en) * | 2017-12-27 | 2018-06-19 | 苏州大学 | The method for removing organic matter in high-chloride wastewater |
| CN109019784A (en) * | 2018-09-10 | 2018-12-18 | 湖南银和瓷业有限公司 | Sewage water treatment method |
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| CN101555082A (en) * | 2008-04-09 | 2009-10-14 | 中国科学院理化技术研究所 | Waste water treatment method and device combining electrochemical degradation and photocatalytic oxidation technologies |
| CN102452753A (en) * | 2010-10-26 | 2012-05-16 | 中国石油化工股份有限公司 | Saliferous organic wastewater treatment method |
| CN102642911A (en) * | 2012-05-02 | 2012-08-22 | 山东绿泉环保工程有限公司 | Advanced oxidation treatment device and advanced oxidation treatment process of refractory organic wastewater |
| CN103395908A (en) * | 2013-07-09 | 2013-11-20 | 江南大学 | Series type internal circulation Fenton fluidized-bed oxidizing tower |
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| CN204874145U (en) * | 2015-06-16 | 2015-12-16 | 北京纬纶华业环保科技股份有限公司 | High COD effluent disposal system of high salt |
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| CN108069491A (en) * | 2016-11-18 | 2018-05-25 | 北京化工大学 | For the electrocatalytic oxidation method and reaction unit of used water difficult to degradate |
| CN108069491B (en) * | 2016-11-18 | 2021-06-25 | 北京化工大学 | Electrocatalytic oxidation method and reaction device for refractory wastewater |
| CN108178283A (en) * | 2017-12-27 | 2018-06-19 | 苏州大学 | The method for removing organic matter in high-chloride wastewater |
| CN109019784A (en) * | 2018-09-10 | 2018-12-18 | 湖南银和瓷业有限公司 | Sewage water treatment method |
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