CN109368959A - A kind of method of DC additional high pressure impulse electric field processing paper mill sludge - Google Patents
A kind of method of DC additional high pressure impulse electric field processing paper mill sludge Download PDFInfo
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- CN109368959A CN109368959A CN201811600335.1A CN201811600335A CN109368959A CN 109368959 A CN109368959 A CN 109368959A CN 201811600335 A CN201811600335 A CN 201811600335A CN 109368959 A CN109368959 A CN 109368959A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/006—Electrochemical treatment, e.g. electro-oxidation or electro-osmosis
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/18—Treatment of sludge; Devices therefor by thermal conditioning
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/26—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof
- C02F2103/28—Nature of the water, waste water, sewage or sludge to be treated from the processing of plants or parts thereof from the paper or cellulose industry
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Abstract
The invention belongs to animal vegetable tissue and microbial disruption technical field, in particular to a kind of device and method using DC additional high pressure impulse electric field processing paper mill sludge.The device that paper mill sludge is cracked using the electric discharge of DC additional high pressure impulse electric field, successively includes DC corona processing unit and high-voltage pulse processing unit, and DC corona processing unit is connected with high-voltage pulse processing unit through sludge flow duct.Paper mill sludge enters the second sludge flow duct of high-voltage pulse processing unit after the processing of DC processing unit by suction pump through the first sludge flow duct.The configuration of the present invention is simple, manufacturing cost is cheap, highly-safe, due to effective application to DC corona and high-frequency impulse electric discharge phenomena, the energy consumption that paper mill sludge cracks is significantly reduced, the effect and efficiency of sludge disintegration are improved, facilitates the minimizing for being intended to paper mill sludge of more efficient economy.
Description
Technical field
The invention belongs to animal vegetable tissue and microbial disruption technical fields, in particular to a kind of to utilize DC additional high pressure arteries and veins
The device and method for rushing electric field treatment paper mill sludge.
Background technique
For paper mill sludge with the rapid development of China's paper industry, it also becomes one of the main industries of pollution environment.?
In pulping and papermaking processes, a large amount of paper waste is generated from different workshop sections, is generated by one section and two sections of water process a large amount of
Paper mill sludge, it contains other harmful substances such as a large amount of heavy metal ion, pathogen, organic pollutant, if dealt with improperly
Secondary pollution can be brought to environment.It handles the extension that disposition is paper production treatment process, is that papermaking enterprise carries out cleaning life
The steps necessary of production, and control water pollution, the protection indispensable steps necessary of urban environment.
The sludge of paper industry can be divided into following a few classes by fiber source: the sludge generated with former wood pulp papermaking is called one
Secondary sludge；The sludge that secondary fibre recycling generates in deinking process, is called deinked sludge；It is generated by secondary biochemical treatment
Activated sludge is called secondary sludge；The sludge that waste paper and activated sludge mix is called mixing sludge.The master of primary sludge
Wanting ingredient is fiber, ash content, filler etc.；The small organism containing bacterium, fungi etc. of secondary sludge is more；Deinked sludge is containing a large amount of
Ink and various impurity, ash content etc..According to the technology status in current China, paper industry sewage can reach discharge standard, but its
No matter the sludge of generation is used landfill, burns, which kind of disposal options such as sea thrown, all deposited due to its solid property and biological property
In secondary pollution, at high cost, consuming energy, dispose the problem of space.The sludge yield of paper waste is big, usually same isotactic
5~10 times of mould municipal sewage plant, and complicated component, water content is high, and processing difficulty is big.
Current excess sludge crack method includes that ultrasonic wave cracks method, fluid shearing cracks method, broken microwave method, smelly
Oxygen, oxidizing process, pyrohydrolytic method, and alkaline hydrolysiss combination ultrasonic disintegration or microwave irradiation etc..Although current various methods respectively have
Advantage, but there are problems that high energy consumption jointly, high cost, low crack rate.
How to improve the disintegration effect of sludge and energy consumption is greatly reduced, improving sludge physicochemical property and improving it biological can drop
Solution property is current letter problem to be solved.
Summary of the invention
To solve the above problems, assisting height using DC (direct current, DC current) the present invention provides a kind of
The method for pressing impulse electric field discharge treatment paper mill sludge is formed using the moment superhigh-temperature and-pressure that high pressure pulse discharge generates
Shock wave and sludge are in DC in DC corona and the oxidation materials such as OH free radical and ozone can be introduced into sludge system, realize high
Effect cracks a kind of new technology of paper mill sludge.The technology can efficiently break up the zoogloea in paper mill sludge, and ablation bacterium is simultaneously
Microbial cell structure and macromolecular substances are destroyed, significantly improves the physicochemical property of paper mill sludge, promotes bacterium intracellular organic matter
Outflow, provides approach for extensive efficient process paper mill sludge.The technology can also be answered by converting different technological parameters
During sterilizing and historrhexis for various industries etc., and play good effect.
A kind of device cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field successively includes that DC corona is handled
Device and high-voltage pulse processing unit, DC corona processing unit and high-voltage pulse processing unit are connected through sludge flow duct.
Paper mill sludge enters high-voltage pulse processing unit through the first sludge flow duct by suction pump after the processing of DC processing unit
The second sludge flow duct, such as Fig. 4, arrow indicates sludge flow duct in figure.
The DC corona treatment plant include: insulating vessel (8), the first discharge electrode, the first sludge flow duct (9),
Transmission facility.The insulating vessel (8) is shell, and shell is equipped with the first sludge flow duct and top, and there are needle-like electrodes to insert
Mouth (10)；First discharge electrode includes needle-like electrode (6) and plate electrode (7), and needle-like electrode (6) the electric discharge section passes through
In needle-like electrode sockets (10) the insertion insulating vessel on insulating vessel top, plate electrode (7) is laid in insulating vessel (8) bottom
End；The transmission facility is HVDC transmission facility.Preferably, the first sludge flow duct (9) insulating vessel side wall be located at away from
At bottom plate 15-25cm, as shown in Figure 1.It is furthermore preferred that the first sludge flow duct (9) is located at distance in insulating vessel side wall
At bottom plate 20cm.
Explanation of nouns: HVDC (high voltage direct current), high-voltage direct current.
Preferably, for the DC corona treatment plant in addition to electrode discharge position, outer surface is coated with insulating materials.
The high-voltage pulse processing unit includes: pressure vessel (4), the second sludge flow duct (3), the second discharge electrode
(2), transmission facility, insulating nut (1).The pressure vessel (4) is shell, and the second dirt is equipped on pressure vessel (4)
Mud flow duct (3) and electrode sockets (11).Second sludge flow duct (3) position such as Fig. 3, the second sludge flow duct (3)
On the outside of the pressure vessel (4), the mud inlet of the second sludge flow duct (3) by suction pump with and insulating vessel be connected
First sludge flow duct (9) mud mouth is connected, and two sludge flow ducts are not same flow duct.The second electric discharge electricity
The discharge end of pole (2) is put into container by electrode sockets.Insulating nut (1) is covered in electrode exterior, electrode is fixed on resistance to
On pressure vessel (4).
Preferably, the high-voltage pulse processing unit further includes side cover set (12), and the side cover is covered in insulating nut (1)
Outside, for protecting insulating nut, insulating nut (1) is fixed on pressure vessel (4).Described device removes electrode discharge position
Outside, outer surface is coated with insulating materials.
First discharge electrode of the DC processing unit includes needle-like electrode (6) and plate electrode (7), wherein needle-like electricity
Pole number is 20 or more；It is preferred that 20~40；And the plate of needle-like electrode discharge end extended line and insulating vessel bottom
Electrode (7) is vertical.The needle-like electrode (6) presses annular arrangement from inside to outside, and number of poles is adjustable.The plate electrode (7)
It is laid in insulating vessel bottom, the insulating vessel is preferably cuboid.
The high-voltage pulse processing unit discharge electrode number is preferably 2 or more；It is preferred that 2~5；And it discharges
Electrode discharge end extended line intersects at the central point of pressure vessel.The pressure vessel is preferably spherical shell.The electrode
It is equipped with screw thread or card slot etc. and adjusts the structure that electrode penetrates container length.
Preferably, using the small red copper of internal resistance as electrode material.
Above-mentioned apparatus is connected by sludge flow duct is connected into multilevel device, is also segmented into two devices and individually transports
Row.
The present invention also provides the application methods of above-mentioned apparatus, include the following steps:
DC corona treatment plant application method:
1) insulating nut is covered on needle-like electrode, then extend into needle-like electrode in insulating vessel by electrode sockets
Portion, and needle-like electrode is fixed on insulating vessel upper surface by insulating nut, wherein the distance of electrode distance sludge can
It adjusts；
2) plate electrode is laid in insulating vessel bottom；
3) binding post of HVDC (high-voltage direct current) power supply is connected to needle-like electrode and plate electricity by cable
On extremely, power parameter and conduction time are adjusted；
Power parameter described in step 3) is nominal input voltage 12kV, and input voltage range is 1kV~12kV；Institute
The conduction time stated is 3~9s.
Preferably, in step 3), voltage range is 2~5kV, and discharge time is 3~7s；It can be by adjusting controllable HVDC
Power supply come realize regulation.
4) flowing velocity for entering paper mill sludge in container is adjusted, keeps it consistent with inter-spike intervals, flows through the device
Paper mill sludge obtain the DC corona processing of same intensity, it is free by introducing a large amount of OH after sided corona treatment in sludge system
The oxidizing substances such as base and ozone, so that the free electron number in sludge increases.
Preferably, the flowing velocity of paper mill sludge described in step 5) is 1.2m/s~1.8m/s.
High-voltage pulse processing unit application method:
A, insulating nut is covered on discharge electrode, is then extend into the discharge end of discharge electrode by electrode sockets resistance to
Inside pressure vessel, and electrode is fixed on pressure vessel outer surface by insulating nut；
B, it by screw thread on insulating nut and discharge electrode, card slot or adjusts electrode by other means and penetrates container
Length is to adjust discharge end distance, while two electrodes are 50 °~70 ° with the angle of horizontal plane, are more advantageous to sensitive adjusting,
And the extended line of discharge electrode discharge end intersects at the central point of pressure vessel；Preferably, two electrodes with horizontal plane
Angle is 60 °.
C, the binding post of high frequency pulse power supply is connected on discharge electrode by cable, adjustment pulse power ginseng
Number, turns on the power switch, and control electric discharge cracks the time in 2~10s；
Preferably, the pulse power is TD2202, power parameter are as follows: output voltage 1kV~100Kv, output power
1.5~2.5kW.It is furthermore preferred that output power 2kW.
D, the flowing velocity for entering paper mill sludge in container is adjusted, keeps it consistent with inter-spike intervals, flows through the device
Excess sludge obtain the shock wave of identical energy, generate explosion, the zoogloea in paper mill sludge broken up, bacteria cell wall and
Macromolecular substances are broken, the outflow of bacterium intracellular organic matter；
E, high-voltage pulse processing unit is discharged in pulse treated paper mill sludge.
Preferably, in step c), the voltage range of high frequency pulse power supply is 10kV~40kV, and discharge time is 2~8s；It is logical
It crosses and the regulation realized to voltage swing and discharge time is adjusted to high-voltage pulse power source.
Preferably, the flowing velocity of paper mill sludge described in step d) is 1.4m/s~1.6m/s.
Device working principle designed by this invention is as follows:
DC sided corona treatment principle:
The high-voltage direct current that DVDC power supply generates is applied on needle-like electrode by cable, paper mill sludge as medium,
The plate electrode of bottom is reached by paper mill sludge by needle-like electrode discharge.Corona discharge can form many oxide matter,
Including high energy particle and ozone.DC corona acts on lower high energy particle and the electrochemical reaction of hydrone is as follows:
e-+O2→O(3P)+O(1D)+e-；O+O2+M→O3+M；O(1D)+H2O→·OH+·OH；
Reaction can produce the OH and ozone of strong oxidizing property.
Ozone can be by free electron e-Hydroxyl radical free radical (OH) is converted into H.It can be formed in positive corona discharge
H, correlated response are as follows:
H2O+e-→H·+·OH+e-；2H2O+e-→H2O2+H2+e-；e-+O3→O3·-；H·+O3→HO3·；
O3 -+H+→HO3·；HO3·→·OH+O2.
Above-mentioned reaction can be seen that DC sided corona treatment produces the OH free radical with high oxidative capacity, ozone, atom
Oxygen and metastable oxygen molecule.When these oxidation materials appear in paper mill sludge system, Strong oxdiative substance and cell membrane postback life
Chemical reaction, microbial cell structure can change.Cell membrane is made of double-layer of lipoid, and important component is unsaturated fat
Acid.Unsaturated fatty acid makes film have gel property.The presence of ozone and OH can damage membrane lipid, so that membrane lipid
Lose the barrier action for preventing ion and polar compound transport.Therefore, ion and electronics are easier to move in sludge media.
Another component of the protein molecule as cell membrane, is substantially made of the linear chain of amino acid, vulnerable to elemental oxygen or metastable
The oxidation of oxygen molecule.Therefore, the oxidation material that corona discharge generates often destroys microbial cell structure in paper mill sludge, and
Change the conduction property of sludge, subsequent high-voltage pulse processing is additionally aided while destroying eucaryotic cell structure.
The high frequency unidirectional pulse electric current that the pulse power generates is applied on discharge electrode by cable, when electrode gap reaches
When certain distance, the paper mill sludge due to being filled with moisture content height between electrode and containing impurity and a large amount of free electrons, pulse
Charged particle is formed under the action of the electric field formed between Electrode, and electron number returns and increases with the increase of electric field strength
Add；When polar plate voltage reaches a certain particular value, sludge media will be breakdown, forms positive electricity, negative electricity by a large amount of high-speed motions
And the discharge channel of neutral particle composition, because sludge media have passed through DC sided corona treatment this discharge channel can be easier
It is formed；The electronegative particle of interchannel marches on towards anode, and positively charged particle marches on towards cathode, in the process of movement between particle mutually
It hitting, kinetic energy is quickly converted to thermal energy, channel moment is made to reach excessive temperature, and liquid vaporizes and carries high temperature to spread around,
It is exceedingly fast since impingment particle enormous amount causes vapour volume to be pushed the speed, the instantaneous enormous impact wave direction surrounding that generates is propagated, i.e.,
Generate blast impulse wave effect.
The pulse power can produce several thousands of or even tens of thousands of single pulses in one second, when a pulsed discharge generates
Blast impulse wave effect, electric discharge terminate after entering interpulse period, and liquid medium is gradually recovered insulation；When pressure vessel is ball
When shape, the shock wave for generation of discharging can produce reflection on spherical container wall, form secondary wave, and tertiary wave is even more repeatedly anti-
It penetrates, these waves and next shock wave can produce synergistic effect, and the generation of synergistic effect greatly enhances the energy of impulse wave
Amount；Shock wave caused by superhigh-temperature and-pressure passes through sludge media and constantly impacts around, generates extremely strong destruction to sludge media
Ability；It so repeats the above process in cycles, the zoogloea in paper mill sludge is broken up, bacteria cell wall and macromolecular substances
It is ablated and be crushed, bacterium intracellular organic matter outflow, to achieve the purpose that crack paper mill sludge.
The present invention also provides the methods for cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field, including following step
It is rapid:
1) paper mill sludge enters DC corona treatment plant through the first sludge flow duct, sludge flowing velocity 1.4m/s~
1.6m/s variation, paper mill sludge enter after DC device that microbial cell is destroyed after the processing of corona, paper mill sludge physics and chemistry
Matter is improved, and paper mill sludge becomes free electron number and number of free radicals in loose and sludge solutions and increases significantly.In the middle part of sludge
Point non-solubility organic matter is decomposed into CO2 and H2O by the free-radical oxidation of strong oxidizing property, so Sludge Surface has bubble production
It is raw.
2) paper mill sludge after DC corona treatment plant enters high-voltage pulse processing unit through the second sludge flow duct,
Sludge flowing velocity changes in 1.4m/s~1.6m/s, paper mill sludge further bacterial cell and sludge after high-voltage pulse is handled
Zoogloea is broken breaks up completely, and intracellular organic matter can freely be discharged, and paper mill sludge is in weak solution shape, it can be achieved that paper mill sludge depth
The purpose of minimizing.
Preferably, the method for cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field, including following step
It is rapid:
1) paper mill sludge enters DC corona treatment plant through the first sludge flow duct, sludge flowing velocity 1.4m/s~
1.6m/s variation, DC corona treatment plant input voltage range are 1kV~10kV；Conduction time is 3~9s；
2) paper mill sludge after DC corona treatment plant enters high-voltage pulse processing unit through the second sludge flow duct,
Sludge flowing velocity changes in 1.4m/s~1.6m/s, and the power supply of the high-voltage pulse processing unit is TD2202, power supply ginseng
Number are as follows: output voltage 1kV~100Kv, 1.5~2.5kW of output power, electric discharge crack the time in 2~10s；
3) high-voltage pulse processing unit is discharged in pulse treated paper mill sludge.
Preferably, in step 1), voltage range is 2~5kV, and discharge time is 3~7s；Preferably can by adjust can
HVDC power supply is controlled to realize regulation.
Preferably, in step 2), the voltage range of high frequency pulse power supply is 10kV~40kV, and discharge time is 2~8s；It is logical
It crosses and the regulation realized to voltage swing and discharge time is adjusted to high-voltage pulse power source.It is furthermore preferred that high frequency pulse power supply
Voltage range be 20kV~30kV.
The present invention has the advantages that
It is first dirty with the papermaking of DC sided corona treatment before high-voltage pulse processing in order to which shock wave is more readily formed in sludge media
Mud improves the physicochemical property of sludge, is destroyed to a certain extent by the microorganism in the processing sludge media of DC corona
And to generate a large amount of oxidizing species and a large amount of free electrons in sludge media, it is more conducive to the processing of later period high-voltage pulse
High energy pulse shock wave is formed in the process.
In order to enable paper mill sludge must play preferable DC corona processing in DC processing unit and reduce energy consumption, needle-like electrode
It is annularly arranged using positive corona electrode, and at the top of insulating vessel using container center as the center of circle, improves DC sided corona treatment efficiency.
In order to meet the physical condition that shock wave is crushed sludge, achieve the purpose that efficiently to crack paper mill sludge, using big function
Rate high-voltage pulse power source makes the pulse shock to be formed have enough energy as energy outputing device.
In order to utilize the energy of shock wave efficiently, energy consumption is reduced, pressure vessel uses spherical shell, and shock wave can
The shock wave that pulsed discharge to obtain multiple reflections on spherical shell again, and next time generates can be stacked with reflection configuration
Add effect, improve the damage capability of shock wave, reinforces the effect of sludge disintegration.
In DC corona treatment plant, processing different material needle-like electrode is different from the optimum distance of medium, in order to meet needle
Type electrode distance is adjustable, and needle-like electrode is equipped with card slot, and uses adjustable DVDC power supply, realizes the efficient utilization of energy；Arteries and veins
It rushes requirement to electrode gap of spark discharge in electric field arrangement and cracks the different demands of different material shock wave energy, realize
The efficient utilization of energy, using electrode gap tunable arrangement and the adjustable pulse power, so that realization device generates in various degree
Damage capability.
In order to realize energy saving and safe operation purpose, using the small copper of internal resistance as electrode material, electrode used therein
It is fixed on device by insulating nut, and insulation processing is carried out to device, to ensure that DC corona treatment plant and high pressure
Pulse processing unit precisely can effectively discharge, and the loss for reducing energy also ensures the safety of device operation.
The configuration of the present invention is simple, manufacturing cost is cheap, highly-safe, due to DC corona and high-frequency impulse electric discharge phenomena
Effectively application, significantly reduces the energy consumption that paper mill sludge cracks, improves the effect and efficiency of sludge disintegration, facilitate more efficient
The economic minimizing for being intended to paper mill sludge.
Detailed description of the invention
Fig. 1 is the schematic front view of DC corona treatment plant of the present invention.
Fig. 2 is the cross-sectional view of Fig. 1 in the horizontal direction.
Fig. 3 is high-pressure pulse device schematic diagram of the present invention.
Fig. 4 is concise description schematic diagram of the present invention
Wherein: 1- insulating nut, the second discharge electrode of 2-, 3- the second sludge flow duct, 4- pressure vessel, 5- papermaking are dirty
Mud processing pond, 6- needle-like electrode, 7- plate electrode, 8- insulating vessel, 9- the first sludge flow duct, 10- needle-like electrode sockets,
11- electrode sockets, 12- side cover set.
Specific embodiment
The following examples are further illustrations of the invention, but the present invention is not limited thereto.
Embodiment 1
A kind of device cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field, wherein DC sided corona treatment papermaking
The device of sludge includes: insulating vessel 8, needle-like electrode 6, plate electrode 7, the first sludge flow duct 9, transmission facility (HVDC
Power supply, such as Fig. 1).The insulating vessel is shell, and is equipped with the first sludge flow duct 9, the top of insulating vessel 8 there are
Needle-like electrode sockets 10, first discharge electrode include needle-like electrode 6 and plate electrode 7, the electric discharge section of the needle-like electrode 6
It is inserted into container by the needle-like electrode sockets 10 of upper vessel portion, plate electrode 7 is laid in container bottom end, and the transmission facility is
HVDC transmission facility, for described device in addition to electrode discharge position, outer surface is coated with insulating materials, and shell is cuboid, and
The first sludge flow duct 9 is equipped in two sides.When individually using DC sided corona treatment paper mill sludge, we are indicated with the value of △ S%
(SCOD, i.e. resolvable chemical oxygen demand can indicate the number of dissolved organic matter in solution for the variation of SCOD in sludge solutions.)
When increasing to 5kV from 1kV using positive corona electrode and D/C voltage, the processing time is 6s, and sludge flowing velocity is 1.5m/s, △
S% is reduced to 6.8% from 15.6%；When using negative corona electrode, when D/C voltage increases to 5kV from 1kV, △ S% increases from 0%
To 21.4%.
The preferred present apparatus uses positive corona electrode, higher cracks efficiency, the increase table of △ S% just having compared with low energy consumption
Show that resolvability organic matter increases in sludge solutions, indicates that DC sided corona treatment is destroyed the microorganism structure in sludge, carefully
Organic matter intracellular can be discharged into extracellularly, and carry out free electron measurement to sludge solutions after processing, the results showed that, sludge
Free electron increases significantly in solution, facilitates the formation of the pulse shock of subsequent high-voltage pulse processing.
Embodiment 2
A kind of device cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field, wherein high-voltage pulse processing dress
Set includes: pressure vessel 4, the second sludge flow duct 3, the first discharge electrode 2, insulating nut 1 and high-voltage transmission equipment.It is described
Pressure vessel 4 is shell, and is put on pressure vessel 4 equipped with described in the second sludge flow duct 3 and electrode sockets 11 second
The discharge end of electrode 2 be put into container by electrode sockets 11 by 1 set of insulating nut electrode is fixed in electrode exterior it is resistance to
On pressure vessel, insulating nut 1 is fixed on pressure vessel 4 described device except electrode is put outside insulating nut by side cover set 12
Outside electric position, outer surface is coated with insulating materials, and shell is sphere, is stayed on shell there are two sludge stream pipe joint.When independent
When handling paper mill sludge with high-voltage pulse processing unit, high-voltage pulse 50kV, △ S% increases to from 8.6%
42.2%, the processing time is 10s, and sludge flowing velocity is 1.5m/s, and treatment temperature is 40 DEG C, frequency 12Hz；The results show that arteries and veins
The effect that voltage processing cracks highly significant to paper mill sludge is rushed, the physicochemical structure of paper mill sludge can be efficiently improved,
Release intracellular organic matter simultaneously breaks up zoogloea；The Preliminary Determination that experiment also carries out high-voltage pulse processing intensity and energy consumption, when
Pulse voltage increases to 50Kv from 10kV, and energy consumption increases to 18kJ/kg from 1kJ/kg, and the processing time is 10s, treatment temperature
40 DEG C, frequency 12Hz；The results show that with the increase of pulse voltage intensity, energy consumption is consequently increased；Preferred high-tension pulse
Rushing size is that 30kV~40kV treatment effect and energy consumption consumption effect are best, it can be achieved that paper mill sludge efficiently cracks.
Embodiment 3
A kind of device cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field, including DC sided corona treatment is (the same as real
Apply example 1) and high-voltage pulse processing (with embodiment 2) two parts, when with stream oriented device to handle paper mill sludge, D/C voltage is
2kV, high-voltage pulse electric are pressed in as 20kV, and the processing time is 5s, and sludge flowing velocity is 1.4m/s, and treatment temperature is 40 DEG C, arteries and veins
Rush frequency 12Hz；The results show that when D/C voltage is 2kV, △ S% reaches 65% when pulse voltage is 20kV；Significantly find out,
Stream oriented device Combined Treatment paper mill sludge significantly improves the value of △ S%, this shows that paper mill sludge is cracked more complete, in sludge
Zoogloea almost all broken up, bacterial cell is broken, and achieves fabulous treatment effect, it is efficient to can reach paper mill sludge
Minimizing；And DC additional high pressure impulse electric field is handled, and further reduced energy consumption, when D/C voltage is 2kV, pulse voltage is
When 20kV, energy consumption is only 8kJ/kg；It realizes low-energy-consumption high-efficiency and cracks the purpose of paper mill sludge, it can be achieved that paper mill sludge
Abundant minimizing.
Embodiment 4
A kind of device cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field, including DC sided corona treatment is (the same as real
Apply example 1) and high-voltage pulse processing (with embodiment 2) two parts, when with stream oriented device to handle paper mill sludge, D/C voltage is
5kV handles time 3s, and sludge flowing velocity is that 1.5m/s high-voltage pulse electric is pressed in as 10kV, and the processing time is 2s, and sludge flows
Speed is 1.5m/s, and treatment temperature is 40 DEG C, pulse frequency 12Hz；The results show that working as, when D/C voltage is 5kV, △ S% reaches
36.4%；When D/C voltage is 5kV, under conditions of pulse voltage is 10kV, energy consumption 5kJ/kg；It can be seen that the condition
Under, energy consumption is lower but treatment effect is unobvious.DC additional high pressure impulse electric field handles paper mill sludge in D/C voltage
5kV, under the conditions of pulse voltage is 10kV, the value variation of S% is smaller, and paper mill sludge physicochemical property is not changed thoroughly.
Embodiment 5
A kind of device cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field, including DC sided corona treatment is (the same as real
Apply example 1) and high-voltage pulse processing (with embodiment 2) two parts, when with stream oriented device to handle paper mill sludge, D/C voltage is
3kV handles time 6s, and sludge flowing velocity is that 1.6m/s high-voltage pulse electric is pressed in as 40kV, and the processing time is 5s, and sludge flows
Speed is 1.6m/s, and treatment temperature is 40 DEG C, pulse frequency 12Hz；The results show that when pulse voltage is 10kV, D/C voltage is
When 5kV, △ S% reaches 53.0%.
As can be seen that the value of △ S% is but lower than the value that pulse voltage is 20kV when high-voltage pulse reaches 40kV, by
, it is found that paper mill sludge is during positive corona Electrode treatment, the high mars free radical quantity in solution can be with D/C voltage for this
Raising and reduce, so as to cause treatment effect reduction.DC additional high pressure impulse electric field handles paper mill sludge in D/C voltage
5kV, energy consumption has reached 30kJ/kg under conditions of high-voltage pulse reaches 40kV, under the premise of high energy consumption, △ S%
Value still also have and significantly promoted, but treatment effect is not best.The Contrast on effect of each embodiment is shown in Table 1.
The Contrast on effect of each embodiment of table 1
It can be seen that DC additional high pressure pulse handles papermaking by the comparison between embodiment 1, embodiment 2 and embodiment 3
Sludge will be good than the efficiency that cracks of any of which method processing paper mill sludge is used alone；By embodiment 2 and in fact
Although although the comparison for applying example 4 can be seen that paper mill sludge have passed through DC processing but still reaches to less than optimization process effect,
Reason is: D/C voltage is excessively high in DC treatment process will lead in sludge solutions free radical and consumes a part by organic matter, more
Main reasons is that the relatively low treatment effect that can not have been generated of high-voltage pulse；It can by the comparison of embodiment 3 and embodiment 5
To find out, under the DC processing of almost peer-level, high-voltage pulse is that the treatment effect of 40kV will be lower than high-voltage pulse electric
Pressure is the treatment effect of 20kV, the reason is that the excessively high high mars free radical that can reduce the generation of DC sided corona treatment of high-voltage pulse
Effect, can not but reach optimal treatment effect under the premise of high energy consumption.Therefore DC additional high pressure impulse electric field processing is made
Paper sludge is 2kV in D/C voltage, handles time 6s, and sludge flowing velocity is 1.4m/s；High-voltage pulse is 20kV, when processing
Between be 5s, sludge flowing velocity be 1.4m/s when, can achieve optimal treatment effect.
Embodiment 6
Other with embodiment 3, the difference is that,
D/C voltage is 2kV, handles time 5s, and sludge flowing velocity is 1.4m/s；High-voltage pulse electric is pressed in as 30kV, processing
Time is 8s, and sludge flowing velocity is 1.4m/s, and treatment temperature is 40 DEG C, pulse frequency 12Hz；The results show that working as pulse voltage
For 30kV, when D/C voltage is 2kV, △ S% reaches 61.0%.
Claims (10)
1. a kind of device for cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field successively includes DC corona processing dress
It sets and is connected with high-voltage pulse processing unit through sludge flow duct with high-voltage pulse processing unit, DC corona processing unit.It makes
Paper sludge enters high-voltage pulse processing unit through the first sludge flow duct by suction pump after the processing of DC processing unit
Second sludge flow duct.
2. device as described in claim 1, which is characterized in that the DC corona treatment plant includes: insulating vessel (8),
One discharge electrode, the first sludge flow duct (9), transmission facility.The insulating vessel (8) is shell, and shell is equipped with first
Sludge flow duct and there are needle-like electrode sockets (10) on top；First discharge electrode includes needle-like electrode (6) and plate
Electrode (7), needle-like electrode (6) the electric discharge section are inserted into insulating vessel by the needle-like electrode sockets (10) on insulating vessel top
Interior, plate electrode (7) is laid in insulating vessel (8) bottom end；The transmission facility is HVDC transmission facility；
The high-voltage pulse processing unit include: pressure vessel (4), the second sludge flow duct (3), the second discharge electrode (2),
Transmission facility, insulating nut (1).The pressure vessel (4) is shell, and the second sludge stream is equipped on pressure vessel (4)
Dynamic pipeline (3) and electrode sockets (11)；Second sludge flow duct (3) is located on the outside of pressure vessel (4), the second sludge flow duct
The mud inlet in road (3) by suction pump with and first sludge flow duct (9) mud mouth for being connected of insulating vessel be connected；Institute
The discharge end for stating the second discharge electrode (2) is put into container by electrode sockets.Insulating nut (1) is covered in electrode exterior, it will
Electrode is fixed on pressure vessel (4).
3. device as claimed in claim 2, which is characterized in that the first sludge flow duct (9) is located in insulating vessel side wall
At bottom plate 15-25cm.
4. device as described in any one of claims 1-3, which is characterized in that the high-voltage pulse processing unit further includes side cover
Cover (12), the side cover set (12) insulating nut (1) outside, insulating nut (1) is fixed on pressure vessel (4).
5. device as described in any one of claims 1-3, which is characterized in that the first discharge electrode packet of the DC processing unit
Include needle-like electrode (6) and plate electrode (7), wherein needle-like number of poles is 20~40；And needle-like electrode discharge end extends
Line is vertical with plate electrode (7) of insulating vessel bottom；The needle-like electrode (6) presses annular arrangement, the plate from inside to outside
Electrode (7) is laid in insulating vessel bottom, and the insulating vessel is cuboid；
The high-voltage pulse processing unit discharge electrode number is 2 2~5；And discharge electrode discharge end extended line intersects
In the central point of pressure vessel；The pressure vessel is spherical shell.The electrode is equipped with screw thread or card slot etc. and adjusts electrode
Penetrate the structure of container length.
6. the application method of device as described in any one in claim 1-5, includes the following steps:
DC corona treatment plant application method:
1) insulating nut is covered on needle-like electrode, then extend into needle-like electrode inside insulating vessel by electrode sockets,
And needle-like electrode is fixed on insulating vessel upper surface by insulating nut, wherein the distance of electrode distance sludge is adjustable；
2) plate electrode is laid in insulating vessel bottom；
3) binding post of HVDC (high-voltage direct current) power supply is connected on needle-like electrode and plate electrode by cable,
Adjust power parameter and conduction time；
4) flowing velocity for entering paper mill sludge in container is adjusted, keeps it consistent with inter-spike intervals, flows through making for the device
Paper sludge obtain same intensity DC corona processing, by introduced in sludge system after sided corona treatment a large amount of OH free radicals and
The oxidizing substances such as ozone, so that the free electron number in sludge increases.
High-voltage pulse processing unit application method:
A, insulating nut is covered on discharge electrode, the discharge end of discharge electrode is then extend into resistance to pressure-volume by electrode sockets
Inside device, and electrode is fixed on pressure vessel outer surface by insulating nut；
B, it by screw thread on insulating nut and discharge electrode, card slot or adjusts electrode by other means and penetrates container length
To adjust discharge end distance, while two electrodes are 50 °~70 ° with the angle of horizontal plane, and discharge electrode discharge end
Extended line intersects at the central point of pressure vessel；
C, the binding post of high frequency pulse power supply is connected on discharge electrode by cable, adjusts pulse power parameters, beats
Switch power supply switch, control electric discharge crack the time in 2~10s；
D, the flowing velocity for entering paper mill sludge in container is adjusted, keeps it consistent with inter-spike intervals, flows through the surplus of the device
Remaining sludge obtains the shock wave of identical energy, generates explosion, the zoogloea in paper mill sludge is broken up, bacteria cell wall and big point
Sub- substance is broken, the outflow of bacterium intracellular organic matter；
E, high-voltage pulse processing unit is discharged in pulse treated paper mill sludge.
7. application method as claimed in claim 6, it is characterised in that: power parameter described in step 3) is input voltage model
It encloses for 1kV~12kV；The conduction time is 3~9s.Preferably, in step 3), voltage range is 2~5kV, discharge time
For 3~7s；Regulation can be realized by adjusting controllable HVDC power supply.
The flowing velocity of paper mill sludge described in step 5) is 1.2m/s~1.8m/s.
In step c), the pulse power is TD2202, power parameter are as follows: output voltage 1kV~100Kv, output power 1.5
~2.5kW.Preferably, in step c), the voltage range of high frequency pulse power supply is 10kV~40kV, and discharge time is 2~8s.
Preferably, the flowing velocity of paper mill sludge described in step d) is 1.4m/s~1.6m/s.
8. a kind of method for cracking paper mill sludge using the electric discharge of DC additional high pressure impulse electric field, including the following steps:
1) paper mill sludge enters DC corona treatment plant through the first sludge flow duct, sludge flowing velocity 1.4m/s~
1.6m/s variation, DC corona treatment plant input voltage range is 1kV~10kV；Conduction time is 3~9s；
2) paper mill sludge after DC corona treatment plant enters high-voltage pulse processing unit, sludge through the second sludge flow duct
Flowing velocity changes in 1.4m/s~1.6m/s, and the power supply of the high-voltage pulse processing unit is TD2202, power parameter are as follows:
Output voltage 1kV~100Kv, 1.5~2.5kW of output power, electric discharge crack the time in 2~10s；
3) high-voltage pulse processing unit is discharged in pulse treated paper mill sludge.
9. the method as described in right wants 8, which is characterized in that in step 1), voltage range be 2~5kV, discharge time be 3~
7s。
10. the method as described in right wants 8, which is characterized in that in step 2), the voltage range of high frequency pulse power supply be 10kV~
40kV, discharge time are 2~8s.It is furthermore preferred that the voltage range of high frequency pulse power supply is 20kV~30kV.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671874A (en) * | 1981-04-06 | 1987-06-09 | Champion International Corporation | Continuous dewatering apparatus |
| CN103723898A (en) * | 2014-01-10 | 2014-04-16 | 天津机科环保科技有限公司 | Pipeline type high-voltage decomposition sludge crushing device |
| CN104692604A (en) * | 2015-03-20 | 2015-06-10 | 东北大学 | Device using high-voltage pulsed discharge to break excess sludge and application method thereof |
| KR101673134B1 (en) * | 2014-05-26 | 2016-11-07 | 주홍점 | Sludge decrement apparatus |
| CN207002537U (en) * | 2017-07-31 | 2018-02-13 | 厦门理工学院 | A kind of multi-electrode dielectric barrier discharge plasma sludge treatment equipment |
| CN108298778A (en) * | 2017-12-27 | 2018-07-20 | 武汉都市环保工程技术股份有限公司 | Sludge cell wall breakage system and method based on high voltage pulse shaped wire |
-
2018
- 2018-12-26 CN CN201811600335.1A patent/CN109368959A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4671874A (en) * | 1981-04-06 | 1987-06-09 | Champion International Corporation | Continuous dewatering apparatus |
| CN103723898A (en) * | 2014-01-10 | 2014-04-16 | 天津机科环保科技有限公司 | Pipeline type high-voltage decomposition sludge crushing device |
| KR101673134B1 (en) * | 2014-05-26 | 2016-11-07 | 주홍점 | Sludge decrement apparatus |
| CN104692604A (en) * | 2015-03-20 | 2015-06-10 | 东北大学 | Device using high-voltage pulsed discharge to break excess sludge and application method thereof |
| CN207002537U (en) * | 2017-07-31 | 2018-02-13 | 厦门理工学院 | A kind of multi-electrode dielectric barrier discharge plasma sludge treatment equipment |
| CN108298778A (en) * | 2017-12-27 | 2018-07-20 | 武汉都市环保工程技术股份有限公司 | Sludge cell wall breakage system and method based on high voltage pulse shaped wire |
Non-Patent Citations (1)
| Title |
|---|
| 门业堃: "基于μs-PEF的城市剩余污泥微生物细胞破解研究", 《中国优秀硕士学位论文全文数据库 工程科技I辑》 * |
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