CN2646128Y - Catalysis, electrolysis and oxidation sewage treatment device with multilayer alternation concentric circles electrodes distribution - Google Patents

Catalysis, electrolysis and oxidation sewage treatment device with multilayer alternation concentric circles electrodes distribution Download PDF

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Publication number
CN2646128Y
CN2646128Y CN 03238189 CN03238189U CN2646128Y CN 2646128 Y CN2646128 Y CN 2646128Y CN 03238189 CN03238189 CN 03238189 CN 03238189 U CN03238189 U CN 03238189U CN 2646128 Y CN2646128 Y CN 2646128Y
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electrode
multilayer
sewage
electrolysis
catalysis
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CN 03238189
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Chinese (zh)
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周集体
李玉明
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Dalian University of Technology
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Dalian University of Technology
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Abstract

The utility model relates to a catalysis, electrolysis and oxidation sewage treatment device with multilayer alternation concentric circles electrodes distribution belonging to sewage treatment technical field, in particular to an efficient sewage treatment device and method developed by use of multiphase polynary catalysis, electrolysis and oxidation technical process. The utility model combines processes such as solid adsorption material, electrode material, catalyst carrier, liquid phase catalysis, gas phase oxidant and electrolysis to compose a sewage physical-chemical-electrolytic treatment device with comprehensive removing function; meanwhile, the utility model combines adsorption material and catalyst carrier and is fluidized inside reactor as electrode material at the same time so as to remove biological inhibiting pollutants and biological metabolites, thereby being extensively used in pretreatment before biochemical reaction and sewage advanced treatment after biochemical reaction in order to realize sewage recycling. The utility model is characterized by small equipment volume and floor space, high treatment efficiency, low electricity consumption, easy operation and convenient maintenance etc.

Description

A kind of multilayer replaces concentric electrode distribution catalyzing and electrolyzing oxidation waste disposal plant
Technical field the utility model belongs to technical field of sewage.Be particularly related to a kind of high-efficiency sewage treatment unit that utilizes heterogeneous multiple catalyzing electrolysis oxidizing process process development.
Background technology mainly is oxidation and electrolysis and association process thereof with the process of the thorough mineralising of pollutent in all kinds of sewage physics-chemical treating processes.On chemical nature, all be that pollutent generation oxygenolysis is finally converted into carbonic acid gas.The same with any chemical reaction process, catalyzer has greatly promoter action to reaction, and the reaction that catalyzer can not carry out many non-catalytic processes is carried out fast.The existing way of catalyzer in reaction system has homogeneous phase and heterogeneous two states, has different catalysis characteristicses and operational characteristic separately, and heterogeneous catalyst is because the easy extremely attention of its catalyst recovery.Except catalyzer, oxygenant is one of important factor of reaction, all kinds of oxygenants and the electric energy that comprise air all are important oxygenants, what relate to the latter is exactly electro-oxidation process, electrolytic oxidation has its special advantages when people explore the green oxidation agent, secondly is environmental friendliness oxygenants such as air, ozone and hydrogen peroxide.Certainly, because the reacting phase of concentration and the factory that routinizes of pollutent is than much lower the order of magnitude in the sewage, the mass transfer of pollutent in reaction system is not allow the problem ignored.Therefore, utilizing adsorption process is the important channel of raising the efficiency with enriching pollutants to reaction medium surface (or catalyst surface).All kinds of sorbing materials have different absorption properties, can adapt to all kinds of different pollutents of absorption, thereby effectively pollutent be transferred to solid phase and purified waste water from water.Can be as long as be adsorbed onto the pollutent of solid phase surface by oxygenolysis fast, this adsorption process just can be carried out continuously, finally realizes the continuous treating processes of sewage.In all kinds of sorbent materials, what here should select is the material that has adsorptivity, catalytic, electroconductibility simultaneously, so that satisfy the requirement of above-mentioned technological process.
The predecessor of this technology: continuous adsorption-electrolytic regeneration sewage treatment process and the technology power that patented, in aforementioned techniques, mainly utilize adsorption process that pollutent is transferred to electrode surface, electrode is a sorbing material, carry out the electrolytic decomposition pollutent then, make regneration of adsorbent material simultaneously.Facts have proved that this technology has very application prospects, all showing very high removal efficiency aspect dye wastewater treatment, chemical wastewater treatment, oil extraction waste water processing, refinery water processing, sanitary sewage disposal, advanced treatment of wastewater or the like.But because pollutant kind is various, character is complicated, and thoroughly mineralising of some pollutents is always arranged, the research back finds to introduce catalytic process and oxidising process is necessary.
The summary of the invention the purpose of this utility model a kind ofly can replace concentric electrode distribution catalyzing and electrolyzing oxidation waste disposal plant with the multilayer that biology is had inhibiting pollutent, biological metabolic product, the thorough mineralising of micro-content organism, remove with regard to providing.
Technical solution of the present utility model is: processes such as heterogeneous catalyst, electrolytic decomposition, electrolytic oxidation, chemical oxidation, electricity flocculation are combined, form the problem that removes that the multicomponent reaction process solves multiple pollutent.Heterogeneous catalyst is meant and has adopted solid catalyst and liquid catalyst in this technology that reaction system is the solid, liquid, gas three-phase.The polynary reaction reagent that is meant that this technology relates to is multiple: liquid-phase oxidation agent and gaseous oxidizing agent; The polynary pollutant removing process that refers to that also this technology relates to is multiple: electrolysis, electrooxidation, electricity flocculation, atmospheric oxidation etc.
The utility model has multiple structure formation, as long as can be implemented in filling sorbing material between the positive negative electricity level alternative pole plate, and the formation fluidized state gets final product under the air aeration condition.
The heterogeneous multiple catalyzing electrolysis oxidation of a kind of typical case waste disposal plant, comprise water outlet (1), equipment supporter (2), central electrode draw-in groove (3), standing bolt (4), lower flange (5), following filler back up pad (6), lower cover (8), equipment supporter (9), contact conductor (10), cylindrical electrode (11), upper cover (12), upper flange (13), upper backup pad (14), standing bolt (15), adsorption stuffing (17), equipment body (19), water-in (20), also comprise inlet pipe (21), gas distribution shower nozzle (7), electrode traverse baffle (16) and electrode guide shell (18), center cylindrical electrode (11) is an anode.
Equipment body (19) diameter is greater than 2 meters, and anode and negative electrode are all made bar-shaped, alternately is the concentric(al) circles form and distributes, and divides multilayer form, and this device also comprises cathode sleeve (22).
Electrode materials can be used inert material graphite, noble metal material or plain carbon stool, decides on use occasion and current density size, and general cathode material can adopt common iron, and anode adopts noble electrode, as graphite and inert metal.
Adsorption stuffing (17) is the sorbing material with electroconductibility, comprises activated carbon granule, graphite granule, coke granule, inorganic carrier or resin, and its filling blending ratio is different and different with handling water quality, also requires different the variation with handling the degree of depth.Filler is in the volume ratio filling of 10-15%, and its particle diameter is 10~100 orders.This filling surface has catalytic activity or is loaded with catalyzer.
A kind of heterogeneous multiple catalyzing electrolysis oxidation sewage treatment method is, add water-soluble catalyst at water-in (20), the ratio that adds changes with concentration of wastewater, settlement separate after the water outlet with electricity flocculation flco, fluidizing medium and gaseous oxidant are by in inlet pipe (21), gas distribution shower nozzle (7) the access arrangement main body (19), make adsorption stuffing (17) between electrode, be in fluidized state, gas-water ratio is along with water pollutant concentration and select the difference of sorbing material for use and change, and gas-water ratio is 10/1~120/1.
Device described in the utility model, its power supply is equipped with available constant voltage dc source, Voltage pulsating direct-current supply or high frequency pulse dc power supply, it is different and different with water quality to look process object, and voltage of supply should adopt 36 volts of following safety voltages, and strength of electric field is 1~10 volt/centimetre.
Water-soluble catalyst is a metallic salt, and price general charged is cheaper, and fluidizing medium and gaseous oxidant are air.
Metallic salt is molysite, aluminium salt, magnesium salts or manganese salt.
The residence time of water in equipment body (19) is 0.5~3 hour, depends primarily on former water pollutant concentration, and the residence time is longer during high density, the residence time is shorter during lower concentration, simultaneously also relevant with needed processing horizontal, level is high more, and the residence time is long more.
The beneficial effects of the utility model are:
1. applied widely, this technology can be used for removing each pollutant, comprises agricultural byproducts comprehensive utilization processing waste water, waste water in dye production, dyeing and printing sewage, mechanical workout sewage etc. such as city domestic sewage, hotels' life and bath sewage, oilfield produced water, refining of petroleum sewage, oil product shipping water ballast, petroleum chemical plant sewage, synthetic substantially organic sewage, Xylitol production.Be particularly useful for reusing sewage and removing to micro-content organism in the water treatment.
2. it is wide to be suitable for the concentration range of disposing of sewage, high concentration organic sewage for chemical oxygen demand COD during greater than 1000mg/l is handled, and this technology can be made pretreatment process, except can removing a part of COD, can also improve its biodegradability, be beneficial to the postorder treating processes.Low-concentration organic wastewater for COD during less than 500mg/l is handled, and particularly adopts removing of relict non-degradable thing after the biochemical treatment, and this technology is effective especially, and the draining Pollutant levels are further reduced, and reaches emission standard.The application of this technology also can be used for the advanced treatment of COD less than the slight sewage of 100mg/l, to reach the quality of reused water requirement.
3. processing cost is low, and the processing cost of this technology depends primarily on the concentration of pollutent and the concentration of inorganic salt, as long as inorganic salt concentration is not more than 2000MG/L, specific conductivity is little, leakage current is lower, is example to handle the sewage of COD below 1000mg/l, and power consumption is at 0.2~0.8KWH/ ton water.
4. treating processes is simple, can realize operate continuously, control automatically, does not need manual maintenance and operation substantially.
Description of drawings is further described the utility model below in conjunction with drawings and Examples.
Structure and outside view when Fig. 1 adopts multilayer to replace the concentric(al) circles distribution electrode for the utility model.
Embodiment
Embodiment 1
The advanced treatment and reclamation of enterprise of petrochemical refining sewage adopts this technology to carry out.Original oil refining sewerage after conventional two stage biological is handled COD content below 100mg/l, adopt the heterogeneous multiple catalyzing electrolysis oxidation sewage treatment process of concentric electrode formula to carry out advanced treatment and realize reusing sewage, the anode of equipment used is a graphite, negative electrode is a carbon steel, power supply is a direct supply, filler is a gac, granularity is 10 orders, and the filling ratio is 10%, and the homogeneous catalyst of employing is a trivalent iron salt, dosage is 100mg/l, vapour-liquid ratio is 30/l, and sewage is supplied water to equipment continuously by water pump, and sewage after metering enters reaction unit, hydraulic detention time 1 hour, pollutent is decomposed, oxidation, draining is purified, and water outlet COD content is at 20~30mg/l, be lower than below the national reuse water standard 50mg/l, power consumption is a 0.6KWH/ ton water.This water can be back to the recirculated cooling water second stage employ, has both alleviated environmental pollution, has saved Freshwater resources again.
Embodiment 2
The purpose of water reuse during the advanced treatment of sanitary sewage reaches.Sanitary sewage COD 200-300mg/l is through sedimentation, after the biochemical treatment, COD is about 100mg/l, when adopting this technology advanced treatment, adopt identical structure and catalyzer, sewage is supplied water to equipment continuously by water pump, sewage access arrangement after metering, hydraulic detention time 1 hour, remaining bio-refractory material is removed, water outlet COD reaches water reuse water standard in the country less than 50mg/l, power consumption 0.5KWH/ ton water.

Claims (4)

1. a multilayer replaces concentric electrode distribution catalyzing and electrolyzing oxidation waste disposal plant, comprise water outlet (1), equipment supporter (2), central electrode draw-in groove (3), standing bolt (4), lower flange (5), following filler back up pad (6), lower cover (8), equipment supporter (9), contact conductor (10), cylindrical electrode (11), upper cover (12), upper flange (13), upper backup pad (14), standing bolt (15), adsorption stuffing (17), equipment body (19), water-in (20), it is characterized in that, also comprise inlet pipe (21), gas distribution shower nozzle (7), electrode traverse baffle (16), electrode guide shell (18) and cathode sleeve (22), center cylindrical electrode (11) is an anode.
2. replace concentric electrode distribution catalyzing and electrolyzing oxidation waste disposal plant according to claims 1 described a kind of multilayer, it is characterized in that anode and negative electrode are all made bar-shaped, alternately be the concentric(al) circles form and distribute, divide multilayer form.
3. replace concentric electrode distribution catalyzing and electrolyzing oxidation waste disposal plant according to claims 1 described a kind of multilayer, it is characterized in that, electrode materials adopts graphite, noble metal material or plain carbon stool.
4. replace concentric electrode distribution catalyzing and electrolyzing oxidation waste disposal plant according to claims 1 described a kind of multilayer, it is characterized in that, adsorption stuffing (17) is the sorbing material with electroconductibility, comprise activated carbon granule, graphite granule, coke granule, inorganic carrier or resin, its filling ratio is loaded in 10~15% volume ratio, and its particle diameter is 10~100 orders.
CN 03238189 2003-09-09 2003-09-09 Catalysis, electrolysis and oxidation sewage treatment device with multilayer alternation concentric circles electrodes distribution Expired - Fee Related CN2646128Y (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101811757A (en) * 2010-04-26 2010-08-25 中国科学院过程工程研究所 Air-assisted electro-coagulation algae water separation device and using method thereof
CN105967313A (en) * 2016-06-21 2016-09-28 中国海洋石油总公司 Internal recycle photoelectron-catalytic oxidation combined treatment device
CN107572636A (en) * 2017-09-20 2018-01-12 云南腾雅环境科技有限公司 A kind of equipment for minimizing energy-efficient overflow-type electric flocculation technique

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101811757A (en) * 2010-04-26 2010-08-25 中国科学院过程工程研究所 Air-assisted electro-coagulation algae water separation device and using method thereof
CN105967313A (en) * 2016-06-21 2016-09-28 中国海洋石油总公司 Internal recycle photoelectron-catalytic oxidation combined treatment device
CN105967313B (en) * 2016-06-21 2019-03-05 中国海洋石油集团有限公司 Photoelectrocatalysioxidization oxidization combined treatment device is recycled in a kind of
CN107572636A (en) * 2017-09-20 2018-01-12 云南腾雅环境科技有限公司 A kind of equipment for minimizing energy-efficient overflow-type electric flocculation technique

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