CN104709978A - Rotary cage net type electric flocculation reactor - Google Patents

Rotary cage net type electric flocculation reactor Download PDF

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Publication number
CN104709978A
CN104709978A CN201510075314.2A CN201510075314A CN104709978A CN 104709978 A CN104709978 A CN 104709978A CN 201510075314 A CN201510075314 A CN 201510075314A CN 104709978 A CN104709978 A CN 104709978A
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China
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cage net
net formula
electrode
filler
controller
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CN201510075314.2A
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CN104709978B (en
Inventor
董黎明
秦泽敏
周恋彤
郑心愿
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Beijing Technology and Business University
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Beijing Technology and Business University
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Water Treatment By Electricity Or Magnetism (AREA)
  • Physical Water Treatments (AREA)

Abstract

The invention discloses a rotary cage net type filling material electric flocculation reactor which comprises an electric flocculation reaction tank, a water inlet pipeline, a water outlet pipeline, a flocculation body discharge pipeline, a water inflow retaining wall, a rotary cage net type filling material electrode, an activated carbon particle feeding device, an ultra-violet lamp, a variable frequency motor and a controller, wherein an iron base filling material or an Al-based filling material, coated with a nanometer titanium dioxide photocatalyst, produces photoelectronchemistry concerted reaction under the effect of the irradiation of the ultra-violet lamp and the effect of an electric field, so that organic matters, which are hard to resolve and remove, in water can be converted into flocculation pollutants through photocatalysis chemical reaction, and concentrated on the surface of a filling material. According to the waste water processed through the reactor, the chemical oxygen demand removal rate can reach 95.1 percent, the chromaticness removal rate can reach 98.9 percent, the removal rate of suspended solids reaches 99.2%, the removal rate of organic matters difficult to resolve reaches 98.9%,and the removal rate of harmful microbes, virus and bacteria can reach 96.9 percent.

Description

A kind of rotation cage net formula electricity flocculation reactor
Technical field
The present invention relates to a kind of rotation cage net formula filler electricity flocculation reactor, belong to the water treatment field in environment protection.
Background technology
The reaction mechanism of electricity flocculation is with the metal such as aluminium, iron for anode and cathode, under galvanic effect, and anodic dissolution, produce metal ion, in a series of hydrolysis of experience, polymerization, ferrous oxidising process, develop into various hydroxo complex, this hydroxo complex has very strong throwing out; Negative electrode can make reducing hydrogen ions in waste water be hydrogen, hydrogen generation air supporting effect, and these two kinds of effects can remove colloid, suspended matter etc. in waste water.Electricity flocculation can be widely used in as pre-treatment such as electroplating wastewater, percolate, waste water in pharmaceutical plants, food wastewater and petrochemical wastewaters.Existing electric flocculation technique exist as; Anodic dissolution and can the shortcomings such as passivation, wastewater treatment load can reduce along with the corrosion of anode, the specific surface area of electrode is little, flocculation cost is higher in flocculation process.A kind of cage net formula filler electricity of patent disclosure of the present invention flocculation reactor, effectively can overcome the problems referred to above, have good application prospect.
Summary of the invention
The object of this invention is to provide one and rotate the electric flocculation reactor of cage net formula, its structure is simple, reliable, overcomes the problems such as electric flocculation sewage treatment equipment Anodic consumption now, anode passivation and working cost are high.
Specifically comprise electric flocculation tank, inlet channel, outlet conduit, flco discharge line, water inlet barricade, rotate cage net formula filler electrode, ultraviolet lamp, activated carbon granule supply device, variable-frequency motor and controller;
Wherein electric flocculation tank comprises in funnelform pond body, top is cylindrical, and bottom is conical, and end face is made up of 6 steelframes being mutually 60 ° of angles, every root steelframe is provided with 1 and rotates cage net formula filler electrode, electrode tip and steel framed structure bolt rivet clasp; The right upper portion of electricity flocculation tank arranges inlet channel, left lower is provided with outlet conduit, electricity flocculation tank bottom centre is provided with flco discharge line, water inlet dams setting is on the left of inlet channel in the body of pond, water inlet barricade is the left and right two portions be separated, left side vertical baffle plate is fixed on reaction tank end face steelframe, and right side " L " type baffle plate is fixed on the reaction tank pool wall on the downside of inlet channel, for alleviating water inlet to the impact in reaction tank;
Electricity flocculation tank inner side-wall is provided with multiple ultraviolet lamp;
Rotate cage net formula filler electrode and comprise cage net formula electrode and inner stuffing, cage net formula electrode is the up-thin-low-thick round bottom taper of diameter, adopt polyethylene material, inner stuffing is the iron-based filler of coated with nano titanium dioxide optical catalyst or aluminium base filler, the cage screen distance of electrode is less than the particle diameter of inner stuffing, and cage net formula filler electrode can carry out speed-changing rotation under the control of controller and variable-frequency motor;
Outside electricity flocculation tank, activated carbon granule supply device is set;
Controller is an integrated PLC block, with rotation cage net formula filler Electrode connection, controls electrode current, voltage, rotating speed, motor exchange cycle; Controller is connected with variable-frequency motor and controls motor speed; Controller is connected with activated carbon granule supply device and is used for controlling to add activated carbon granule in electric flocculation tank.
Electricity flocculation tank pond body diameter 3m, Upper cylindrical height 2m, lower cone height 1m.
Rotating cage net formula filler electrode height is 100cm, top diameter 25cm, mid diameter 45cm.
Inlet channel, outlet conduit and flco discharge line all adopt cast-iron pipe, and caliber is respectively 100mm, 100mm and 150mm.
The invention has the advantages that:
(1) this reactor available iron base or aluminium base filler, need not change electrode, saves energy and reduce the cost and can reduce electric flocculation expense;
(2) cage net formula filler electrode is because of the filler of its inner dispersion, has very high specific surface area, and round bottom taper has good hydraulics, and flocculation efficiency significantly improves; Simultaneously cage net formula filler electrode can high speed rotating under the driving of motor, while stirring water body rotary becomes eddy flow, filler is constantly rolled in the reactor, greatly add contact area and the duration of contact of filler and water body and pollutent, make better to be attached to filling surface by throw out in waste water, the water body simultaneously rotated and the filler of rolling can make the irradiation of ultraviolet lamp more evenly fully, avoid lighting dead angle.
(3) the iron-based filler of coated with nano titanium dioxide optical catalyst or aluminium base filler under the irradiation of ultraviolet lamp and the effect of electric field issue third contact of a total solar or lunar eclipse electrochemistry concerted reaction, the difficulty in waste water is decomposed, difficult organics removal changes into by photochemical catalysis chemical reaction the pollutent that can flocculate.
(4) passive film of formation can puncture by electrode in the process of periodicity change poles, improves processing efficiency.
(5) by the synergistic effect of ultraviolet catalytic, electric field, the harmful microorganism in waste water, virus, bacterium etc. are thoroughly removed effectively.
By the waste water of this reactor for treatment, the clearance of chemical oxygen demand (COD) reaches 95.1%, and the clearance of colourity reaches 98.9%, and the clearance of suspended substance reaches 99.2%, the clearance of difficult decomposing organic matter reaches 98.9%, and the clearance of harmful microorganism, virus, bacterium reaches 96.9%.
Accompanying drawing explanation
Fig. 1 is the longitudinal sectional drawing rotating cage net formula filler electricity flocculation reactor;
Fig. 2 is the transverse cross-sectional view rotating cage net formula filler electricity flocculation reactor;
Fig. 3 is cage net formula filler electrode schematic diagram.
In figure: 1-electricity flocculation tank, 2-inlet channel, 3-outlet conduit, 4-flco discharge line, 5-water inlet barricade, 6-variable-frequency motor, 7-ultraviolet lamp, 8-filler, 9-rotate cage net formula filler electrode, 10-controller, 11-activated carbon granule supply device.
Embodiment
In order to understand the present invention better, below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, the present invention rotates cage net formula electricity flocculation reactor, comprises electric flocculation tank 1, inlet channel 2, outlet conduit 3, flco discharge line 4, water inlet barricade 5, ultraviolet lamp 7, rotates cage net formula filler electrode 9, variable-frequency motor 6 and controller 10;
Wherein electric flocculation tank 1 comprises rounded funnelform pond body, pond body diameter 3m, cylinder height 2m, downside cone height 1m; End face is made up of (as Fig. 2) 6 steelframes being mutually 60 ° of angles, every root steelframe is provided with 1 and rotates cage net formula filler electrode 9, electrode tip and steel framed structure bolt rivet clasp; The right upper portion of electricity flocculation tank 1 arranges inlet channel 2, left lower is provided with outlet conduit 3, be provided with center bottom electricity flocculation tank and be provided with body discharge line 4, inlet channel 2, outlet conduit 3 and flco discharge line 4 all adopt cast-iron pipe, and caliber is respectively 100mm, 100mm and 150mm; Water inlet barricade 5 is arranged on the left of influent waste water pipeline 2, barricade height 20cm, long 20cm, water inlet barricade 5 is the left and right two portions be separated, left side vertical baffle plate is fixed on reaction tank top steelframe, right side " L " type baffle plate is fixed on the reaction tank pool wall on the downside of inlet channel, for alleviating water inlet to the impact in reaction tank.
Rotate cage net formula filler electrode 9 (as Fig. 3), comprise cage net formula electrode and inner stuffing 8.Cage body is round bottom taper, high 100cm, top diameter 25cm, mid diameter 45cm, adopts polyethylene material; Inner stuffing 8 is the iron-based filler of coated with nano titanium dioxide optical catalyst or aluminium base filler.Cage net formula filler electrode 9 can carry out speed-changing rotation under the control of controller 10 and variable-frequency motor 6.
Electricity flocculation tank 1 inner side-wall is provided with multiple ultraviolet lamp 7.
Outside electricity flocculation tank, activated carbon granule supply device 11 is set;
Controller 10 is integrated PLC blocks, is connected, controls electrode current, voltage, rotating speed with rotation cage net formula filler electrode 9; Controller 10 is connected with variable-frequency motor 6 and controls for motor speed.Controller 10 is connected with activated carbon granule supply device 11 and is used for controlling to add activated carbon granule in electric flocculation tank.
The working process rotating cage net formula filler electricity flocculation reactor is as follows:
Waste water enters electric flocculation tank 1 pond body by inlet channel 2, by water inlet barricade 5, water inlet barricade can reduce its disturbance caused at Chi Tizhong, water inlet is stopped after waste water fills electric flocculation tank 1 pond body, controller 10 starts to arrange the electric current rotating cage net formula filler electrode, voltage, rotating speed, reaction times, the parameters such as electrode exchange cycle, reactor is started working, rotate cage net formula filler electrode and pass into electric current, start to rotate, ultraviolet lamp is opened and is irradiated, iron-based filler or the aluminium base filler of coated with nano titanium dioxide optical catalyst constantly roll in the reactor, with the pollutent generation photoelectrochemistry concerted reaction in water body under the irradiation of ultraviolet lamp and under the effect of electric field, difficulty in waste water is decomposed, difficult organics removal changes into by photochemical catalysis chemical reaction the pollutent that can flocculate, activated carbon granule supply device is controlled with Time Controller 10, activated carbon granule is added as throw out condensation nucleus in electric flocculation tank 1, the throw out of generation is made to be enriched in activated carbon granule surface, after having reacted, rotate cage net formula filler electrode 9 and stop the rotation, precipitation for some time, after the water purification after process is discharged from outlet conduit 3, open flco discharge line 4 and will produce flco discharge, so far complete a reaction time.
By the waste water of this reactor for treatment, the clearance of chemical oxygen demand (COD) reaches 98.1%, and the clearance of colourity reaches 98.9%, and the clearance of suspended substance reaches 99.9%, the clearance of difficult decomposing organic matter reaches 99.9%, and the clearance of harmful microorganism, virus, bacterium reaches 96.9%.

Claims (4)

1. rotate a cage net formula electricity flocculation reactor, comprise electric flocculation tank, inlet channel, outlet conduit, flco discharge line, water inlet barricade, rotate cage net formula filler electrode, ultraviolet lamp, activated carbon granule supply device, variable-frequency motor and controller etc.; It is characterized in that: wherein electric flocculation tank comprises in funnelform pond body, top is cylindrical, and bottom is conical, and pond body end face is made up of 6 steelframes being mutually 60 ° of angles, every root steelframe is provided with 1 and rotates cage net formula filler electrode, electrode tip and steel framed structure bolt rivet clasp; The right upper portion of electricity flocculation tank arranges inlet channel, left lower is provided with outlet conduit, electricity flocculation tank bottom centre is provided with flco discharge line, water inlet dams setting is on the left of inlet channel in the body of pond, water inlet barricade is the left and right two portions be separated, left side vertical baffle plate is fixed on reaction tank end face steelframe, and right side " L " type baffle plate is fixed on the reaction tank pool wall on the downside of inlet channel, for alleviating water inlet to the impact in reaction tank;
Electricity flocculation tank inner side-wall is provided with multiple ultraviolet lamp;
Rotate cage net formula filler electrode and comprise cage net formula electrode and inner stuffing, cage net formula electrode is the up-thin-low-thick round bottom taper of diameter, adopt polyethylene material, inner stuffing is the iron-based filler of coated with nano titanium dioxide optical catalyst or aluminium base filler, the cage screen distance of electrode is less than the particle diameter of inner stuffing, and cage net formula filler electrode can carry out speed-changing rotation under the control of controller and variable-frequency motor;
Outside electricity flocculation tank, activated carbon granule supply device is set;
Controller is an integrated PLC block, with rotation cage net formula filler Electrode connection, controls electrode current, voltage, rotating speed, motor exchange cycle; Controller is connected with variable-frequency motor and controls motor speed; Controller is connected with activated carbon granule supply device and is used for controlling to add activated carbon granule in electric flocculation tank.
2. rotation cage net formula electricity flocculation reactor according to claim 1, is characterized in that, electric flocculation tank pond body diameter 3m, Upper cylindrical height 2m, lower cone height 1m.
3. rotation cage net formula electricity flocculation reactor according to claim 1, is characterized in that, rotating cage net formula filler electrode height is 100cm, top maximum diameter 25cm, middle part maximum diameter 45cm.
4. rotation cage net formula electricity flocculation reactor according to claim 1, it is characterized in that, inlet channel, outlet conduit and flco discharge line all adopt cast-iron pipe, and caliber is respectively 100mm, 100mm and 150mm.
CN201510075314.2A 2015-02-12 2015-02-12 One kind rotation cage net formula electric flocculation reactor Expired - Fee Related CN104709978B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108033523A (en) * 2017-12-21 2018-05-15 江南大学 A kind of electric flocculation handles the technique containing zinc-nickel complex compound electroplating wastewater
CN111018062A (en) * 2019-11-08 2020-04-17 江苏科技大学 Device for treating wastewater by adopting electric flocculation coupling electrocatalytic oxidation and treatment method thereof
CN115159629A (en) * 2022-06-19 2022-10-11 北京工业大学 Sewage treatment device capable of exchanging cathode and anode reaction chambers and stirring electrode fillers

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CN203498212U (en) * 2013-09-24 2014-03-26 兰州交通大学 Integrated miniature multi-dimensional electrode electric flocculation combined immersed ultrafiltration water purification device
CN103848534A (en) * 2014-03-17 2014-06-11 碧海舟(北京)石油化工设备有限公司 Oily sewage ultrasonic magneto-electric flocculation suspension filtering purifying process
CN104071871A (en) * 2014-06-20 2014-10-01 张家港格林台科环保设备有限公司 High-density electric flocculation device with slidable pole plates and use method thereof

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JP2007319812A (en) * 2006-06-02 2007-12-13 Sharp Corp Method and apparatus for cleaning water
CN101500947A (en) * 2006-08-08 2009-08-05 新加坡科技劲力私人有限公司 Method and apparatus for treating water or wastewater or the like
CN201309849Y (en) * 2008-11-12 2009-09-16 东莞市沃杰森水处理科技有限公司 Electrocagulation device for wastewater treatment
DE102010061925A1 (en) * 2010-11-25 2012-05-31 Voith Patent Gmbh Purifying waste water by electro-flocculation, comprises conducting the waste water through electro-flocculation tank, in which a voltage source is connected and electrodes are contacted with the waste water
CN202186913U (en) * 2011-06-20 2012-04-11 广西博世科环保科技股份有限公司 Electric flocculation device adopting external circulation stirring and movable electrode
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108033523A (en) * 2017-12-21 2018-05-15 江南大学 A kind of electric flocculation handles the technique containing zinc-nickel complex compound electroplating wastewater
CN111018062A (en) * 2019-11-08 2020-04-17 江苏科技大学 Device for treating wastewater by adopting electric flocculation coupling electrocatalytic oxidation and treatment method thereof
CN111018062B (en) * 2019-11-08 2022-08-26 江苏科技大学 Device for treating wastewater by adopting electrocoagulation coupled electrocatalytic oxidation and treatment method thereof
CN115159629A (en) * 2022-06-19 2022-10-11 北京工业大学 Sewage treatment device capable of exchanging cathode and anode reaction chambers and stirring electrode fillers
CN115159629B (en) * 2022-06-19 2023-12-01 北京工业大学 Sewage treatment device capable of exchanging cathode and anode reaction chambers and stirring electrode fillers

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