CN109052895A - A kind of wave resonance electrochemistry deeply dehydrating sludge technology - Google Patents

A kind of wave resonance electrochemistry deeply dehydrating sludge technology Download PDF

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CN109052895A
CN109052895A CN201810876809.9A CN201810876809A CN109052895A CN 109052895 A CN109052895 A CN 109052895A CN 201810876809 A CN201810876809 A CN 201810876809A CN 109052895 A CN109052895 A CN 109052895A
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sludge
wave
frequency
energy
electrochemistry
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袁颖宏
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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
    • 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
    • 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
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • 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
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/123—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using belt or band filters
    • 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
    • C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/06—Sludge reduction, e.g. by lysis

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Electrochemistry (AREA)
  • Treatment Of Sludge (AREA)

Abstract

The present invention relates to a kind of wave resonance electrochemistry deeply dehydrating sludge technologies, its main method includes: to be measured by the analysis to binding force between associative key and colloid layer, it is external to apply certain energy density and possess the similar wave resonance superposition for combining bond frequency or the bond frequency that associates with certain feature, while resonating on superposition basis to impose current potential appropriate to colloid and migrate out hydrone thoroughly according to the mode of electric osmose electrophoresis in above-mentioned wave and achieving the purpose that dehydration and drying.Method provided by the invention is that water discharges separation under liquid phase state, and without overcoming big phase-change energy, energy consumption is lower；And under electric field action, it is easily isolated by the hydrone of concussion activation, method simplicity is easily-controllable, can reach best dehydration purpose through constant current constant voltage pulse or commutation multiple choices to different sludge.

Description

A kind of wave resonance electrochemistry deeply dehydrating sludge technology
Technical field
The invention belongs to technical field of sludge treatment more particularly to a kind of wave resonance electrochemistry deeply dehydrating sludge technologies.
Background technique
The yield of sludge is in show ascendant trend with the continuous improvement of wastewater treatment in China rate.Sewage disposal process is exactly Harmful substance in liquid waste water is innoxious, pollution dissolution suspended material by proper treatment with solid phase form precipitation and separation, Enter natural water after Water warfare to recycle or recycle.Solid-state separate substance becomes the by-product of water process as sludge, usually Containing a large amount of hardly degraded organic substances, heavy metal and salt and pathogenic microorganism and worm's ovum, if not dealing carefully with will cause seriously Secondary pollution.
Excess sludge, i.e., the sludge generated after sewage treatment, most important feature are exactly moisture content height, even as high as 99%, it is exactly the moisture removed in sludge that realize sludge reduction most, which be directly also most efficient method, but due to excess sludge Complicated component is in wadding body state, and dewatering is very poor, if untreated sludge directly carries out mechanical dehydration, mud cake is aqueous Rate is still up to 80% or so, this is well below China's solid refuse standard of landfill (moisture content is less than 60%).
Currently, common mud dewatering method has desiccation method, Mechanical Method, conditioning method.The commonly natural desiccation of desiccation method With heating and drying two kinds, natural desiccation is a kind of simple traditional dewatering, and dehydration cost is low, but since dehydration efficiency is low, It takes up a large area, it is big to surrounding environment influence, therefore natural desiccation is seldom used in large and medium-sized sewage plant；Heating and drying is to adopt The method manually heated makes a kind of method that the moisture in sludge is quickly evaporated, although dehydration efficiency is high, after dehydration Moisture percentage in sewage sludge can be down to 10%-30%, but operating cost is higher, larger to surrounding environment influence, is relatively more suitable for The centralized processing and disposition of small sewage treatment plant sludge.Mechanical dehydration common are centrifugal dehydration, plate compression dehydration, belt filters pressing Dehydration, vacuum filtering and dewatering, noise is big, and moisture content of the cake is high and takes up a large area, therefore since it is dehydrated for vacuum filtering and dewatering Seldom it is used；Compared to other dewaterings, plate compression dehydrated sludge cake moisture content is lower, but due to its discontinuous Working mould The disadvantages of formula, dehydration efficiency is low, and operating environment is poor, and the degree of automation is not high limits the application of its Large Sewage Treatment Plant at home； Centrifugal dehydration and belt type dehydration are due to easy to operate low with operating cost still widely used.Conditioning method has chemical conditioning, physics Conditioning, biology conditioning, wherein chemical conditioning due to cost of investment it is low, simple operation and other advantages are still widely adopted at present.But The drawbacks of simple Opsonizing method needs a large amount of consumption chemicals, and there are potential pollution and secondary pollutions.Currently, in addition to heating Seasoning, the attainable minimum of deeply dehydrating sludge institute is probably exactly 70%, and the national solid standard of landfill of distance still has quite big Distance.If conditioning method largely adds chemical treatments, sludge solid content can no doubt be down to chemical drugs that are very low, but consuming The solid contaminant of product and increment is not the road that environmental protection treatment should be walked.And heat drying method from energy consumption and environmental protection angularly See it is not a feasible scheme.Therefore, finding a kind of highly effective sludge Deep dehydration technique, to be still current environmental protection industry (epi) diligent One project of diligent effort research and development.
Summary of the invention
In view of the deficiencies of the prior art, the invention proposes a kind of wave resonance electrochemistry deeply dehydrating sludge technology, pass through Electrochemistry conditioning, sludge colloid double electrical layers are changed, formed a kind of predictable sludge colloid closely with diffusion interlayer knot Close bonding force.Then according to this characteristic parameter in conjunction with hydrone its binding force is destroyed from sludge by certain energy wave In release.According to modern physics concept, it is in certain physical frequencies model to the constraint of hydrone that this, which combines bonding force, It has an effect in enclosing.Since this bonding force is usually to pass through conventional mechanical side between chemical bond and physical bond power Method is difficult that this binding force is overcome to release hydrone, the so difficult reason of this namely current deeply dehydrating sludge. This technology fully considers a kind of dewatering technology that environmentally friendly sludge components structure feature is invented with internal colloid dispersed condition: It is measured by the analysis to binding force between associative key and colloid layer, it is external to apply certain energy density and there is certain feature to possess The wave of similar combination bond frequency or the bond frequency that associates, which resonates, to be superimposed, while being resonated to be superimposed on basis in above-mentioned wave and be imposed to colloid Current potential appropriate migrates out hydrone thoroughly according to the mode of electric osmose electrophoresis and achievees the purpose that dehydration and drying.
In order to solve the above technical problems, the technical scheme adopted by the invention is as follows:
The invention proposes a kind of wave resonance electrochemistry deep dehydration method for sludge, comprising the following steps:
S1: flocculation chemical conditioning: 3-15kg conditioner is added in sludge per ton and carries out chemical conditioning；
S2: electrochemistry conditioning: after chemical conditioning, sludge is moved into the electrochemical reactor that voltage is 3-10V and is catalyzed Activation makes the reduction of sludge colloid electric double layer current potential, and the combination bond frequency of hydrone and solid granulates reaches in the sludge colloid Within the scope of energy wave setpoint frequency, activated sludge is obtained；
S3: the confirmation of energy wave setpoint frequency: selecting the energy wave setpoint frequency applied to the activated sludge is 1000- 5000Hz；
S4: generating device energy wave resonance collaboration electric osmose electrophoresis dehydration: is modulated in the energy wave setpoint frequency by wave Selection resonance wave frequency rate identical with the combination bond frequency resonates in range, destroys hydrone in the activated sludge colloid With the associative key of solid granulates, concussion dehydration is carried out to the activated sludge, while voltage is applied to the activated sludge and is carried out Electric osmose electrophoresis, migrates out hydrone thoroughly.
Further, the mode of the electric osmose electrophoresis are as follows: constant current constant voltage pulse mode, wherein voltage 5-100V, electric current Density is 1-50A/dm3, pulse frequency is identical as the resonance wave frequency rate.
Further, when the energy wave setpoint frequency is 1000-5000Hz corresponding electric double layer potential range be ± 50mV。
Further, the conditioner includes: surfactant and electrolyte, wherein the surfactant be sun from Sub- surfactant, the electrolyte are one of alkaline or alkaline-earth salts or a variety of.
It further, further include step S5: when the combination bond frequency of the activated sludge does not set frequency in the energy wave Within the scope of rate, the activated sludge is added after the electrolyte improves and be 6.3-7.5 to pH value, then carries out step S4, Wherein, additive amount is that sludge per ton adds 0.5-3kg electrolyte.
Further, when carrying out the flocculation chemical conditioning, the pH value of sludge is improved to 6.3-7.5.
Further, the concussion dehydration is specifically includes the following steps: S401: adding the conditioner and is improved Concussion activation afterwards；S402: mechanical separation of solid and liquid primary dewatering is carried out after concussion activation；S403: it repeats step S401 and carries out repeatedly It after concussion activation superposition, carries out machinery and is separated by solid-liquid separation deep dehydration, wherein the total time of the concussion dehydration is 5-30 points Clock.
Further, the device of the mechanical dehydration includes: belt filter press or plate type pressure filter.
Further, the energy wave setpoint frequency applied to the activated sludge is selected further include: 8000Hz or more.
Further, it is one in mechanical wave, electromagnetic wave or high frequency shock wave that the energy wave of modulating device, which occurs, for the wave Kind is a variety of, and wave frequency rate is 1000-5000Hz or 8000Hz or more, and energy density of wave is directly proportional to Treatment of Sludge load capacity.
Beneficial effects of the present invention include at least:
1) method provided by the invention is simple, and condition is easy to control；Surfactant and electrolyte is added and electrochemistry is urged Change conditioning, effectively improve the bonding state parameter of water, keeps wave resonance superposition controllable, predictable and operable in one Effective range carries out；
2) method provided by the invention is that water discharges separation under liquid phase state, without overcoming big phase-change energy, energy consumption compared with It is low；
3) the energy wave frequency rate that the present invention selects is adjusted according to the characteristic parameter after different sludge conditionings, thus High-efficient adaptation is wide；
4) present invention is easily isolated, method simplicity is easily-controllable, to difference under electric field action by the hydrone of concussion activation Sludge can reach best dehydration purpose through constant current constant voltage pulse or commutation multiple choices；
5) present invention is easy to and other are mechanical, chemically and physically dehydration equipment synergistic application, can achieve good dehydration Efficiency and desiccation effect.
Detailed description of the invention
Fig. 1 is dewatering flow chart of the present invention.
Fig. 2 is electric osmose principle of electrophoresis schematic diagram of the present invention.
Fig. 3 is electric osmose electrophoresis dehydration schematic diagram of the present invention.
Wherein, electric osmose electrophoresis tank 1, electrode 2, strainer medium 3.
Specific embodiment
In order to make those skilled in the art more fully understand technical solution of the present invention, combined with specific embodiments below to this Invention is described in further detail.The embodiments described below is exemplary, and for explaining only the invention, and cannot be understood For limitation of the present invention.Particular technique or condition are not specified in embodiment, according to the literature in the art described skill Art or condition are carried out according to product description.
In current sewage disposal process, water body harmful waste passes through physical chemistry flocculating setting such as and handles, and solid-state is given up Object is separated, and treated water row reuse or is discharged into natural water again, and the solid waste separated, that is, wait locate The sludge of reason, it already contains a large amount of flocculant, organic-inorganic waste, other additives being added in water treatment procedure, Electrolyte etc..In general, the solid waste sludge that sewage treatment plant comes out mostly is primary treatment sludge, moisture content 80-98% it Between.For the moisture percentage in sewage sludge after advanced treating all in 70-80%, this is also moisture percentage in sewage sludge relatively low in the market currently on the market Value.And the processing moisture content of feed sludge to be processed involved in the art of this patent is when being the sludge of 70-75%, cost performance is higher (the backward described sludge refers both to the sludge of this moisture content level in description), can also handle the dirt that moisture content is 80-98% certainly Mud, but the cost spent can be higher.It is understood that sludge and sewage or preliminary sludge have visibly different feature: (1) contain a large amount of flocculants, pH adjusting agent；(2) sludge routine colloform texture has been destroyed, and electric double layer is greatly compressed In state of aggregation；(3) sludge has been completely in solid state, no mobility, and dehydration becomes water from admittedly completely Overcome superficial attractive forces or binding force to the process of solid external migration between state sludge.
Therefore, for the present invention according to above-mentioned principle, the inventive concept mainly taken is as described below.
Conditioning of the invention is primarily directed to overcoming association absorption water power lotus between sludge solids capillary solid-liquid two-phase interface Energy barrier and water associative key energy barrier.Used conditioner and conditioning mode are also all different from water treatment procedure, at conventional water Technology used in reason or sludge preliminary hydro-extraction is essentially different.More specifically, due to different sludge sources, at different water The sludge that science and engineering skill generates all is very different, so its interface charge energy barrier and water molecules bond energy build also phase not to the utmost Together.The present invention, will through electrochemical reaction intermediate by the way that surfactant and electrolyte and electrochemical catalysis conditioning is added This energy barrier reduces, combination frequency of electric double layer (the close layer and diffusion layer) potential drop as low as proper level, between water and solid granulates Rate reaches range appropriate, the effective bonding state parameter for improving water, keeps wave resonance controllable, predictable and can grasp in one It carries out in the effective frequency range of work, then is released water by the Sasser resonance of approximate frequency, pass through resonance and be superimposed, water The binding force of molecule is greatly reduced, however the water of liquid still must be transmitted through the migration between solid-liquid and complete complete solid-liquid point From sludge drying.The technology is to impose current potential appropriate to colloid on above-mentioned wave resonance superposition basis to make hydrone according to electric osmose The mode of electrophoresis, which thoroughly migrates out, achievees the purpose that dehydration and drying, makes the moisture content of sludge well below 70-75%, and effect is aobvious It writes.
According to an embodiment of the invention, Fig. 1 is dewatering flow chart of the present invention, shown referring to Fig.1, wave of the present invention Resonate electrochemistry deep dehydration method for sludge, specifically includes following steps.
S1: flocculation chemical conditioning: adding 3-15kg conditioner in sludge per ton and carry out chemical conditioning, improves parameter with double Electric layer current potential ζ-potential (Zeta potential) is as characterization, using energy wave setpoint frequency as target, specifically, the present invention is carrying out institute When stating flocculation chemical conditioning, the pH value of sludge is improved to 6.3-7.5, purpose is that the sludge after making conditioning is carrying out following step After the conditioning of S2 electrochemistry, it can reach within the scope of energy wave setpoint frequency in conjunction with bond frequency.It is understood that of the present invention PH value is the sensitive parameter of isoelectric point and ζ-potential value, and then influences to combine bond frequency, can be with by measurement pH value and conductivity Measure electric double layer current potential ξ value.
According to some embodiments of the present invention, the conditioner includes: surfactant and electrolyte, wherein the table Face activating agent is cationic surfactant, and the electrolyte is one of alkaline or alkaline-earth salts or a variety of, for example potassium, The compound of the anxiety without secondary pollution such as sodium, calcium, magnesium.
S2: electrochemistry conditioning: after chemical conditioning, sludge is moved into the electrochemical reactor that voltage is 3-10V and is catalyzed Activation makes the reduction of sludge colloid electric double layer current potential by the continuous action of electrochemical reaction and electrochemical reaction intermediate, and should The combination bond frequency of hydrone and solid granulates reaches a new balance or stabilization in sludge colloid, falls in energy of the invention Within the scope of wave setpoint frequency, activated sludge is obtained.
According to an embodiment of the invention, more specifically, the electrochemical catalysis activation is that electrochemical oxidation and physical wave are molten Born of the same parents crack residual active sludge.Electrochemical techniques are reduced for residual active sludge, are in electrochemical reactor by certain Chemical reaction, utilize the hydroxyl radical free radical group of the strong oxidizing property formed in electrochemical process or the work of other strong oxidizing properties Property substance (i.e. above-mentioned reaction intermediate) destroys the flocculation structure of sludge, and oxidation activity sludge extracellular polymeric keeps sludge molten Solution participates in sewage treatment, reduces the surplus sludge volume for the treatment of process process, realizes sludge reduction.By the wadding body for changing sludge Structure makes sludge be easier filter-press dehydration to improve the sedimentation and water separation capability of sludge, and the moisture percentage in sewage sludge after filters pressing is lower, To achieve the purpose that reduce processing cost.Electrochemical catalysis activation is selected by suitable parameter (voltage), can influence sludge glue The bonding state feature of hydrone and solid granulates in body, i.e., the described combination bond frequency.
S3: the confirmation of energy wave setpoint frequency: selecting the energy wave setpoint frequency applied to the activated sludge is 1000- 5000Hz；The energy wave setpoint frequency when being 1000-5000Hz corresponding electric double layer current potential Zeta potential enclose for ± 50mV.By There are chemical bond force, association (hydrogen bond) bonding force, charge forces and Van der Waals force in binding force of the solid waste particle to hydrone. Chemical bond force is apparently not the range that sludge dehydration process is considered as.In sludge hydrogen bond according to document observation test data between (4.785-5.1)X1013Hz.So high frequency will overcome this energy barrier in fact with evaporation without too many differences, from energy Also without much meanings from the point of view of source consumption angle.Key of the invention is exactly to select the concussion of frequency 1000-5000Hz range, is passed through Energy accumulation resonance superposition reduces the activation energy of water, to will be penetrated in the form of liquid phase state in conjunction with water under the conditions of low energy consumption Mechanically decoupled program is separated from solid-state, in conjunction with the electric osmose electrophoretic in following step S4, makes hydrone according to electric osmose electricity The mode of swimming, which thoroughly migrates out, achievees the purpose that dehydration and drying.
According to some embodiments of the present invention, according to the difference of sludge partial size and volume size, different resonance waves is selected Frequency carries out resonance processing, and usually big particle size fraction processing frequency is relatively lower, and small particle component frequency wants high, selects model It is trapped among 1000-5000Hz, particular type sludge can choose 8000Hz.The big partial size of the present invention is more than 102μm, less than 101μm general It is interpreted as small particle.
It is understood that selecting the energy wave setpoint frequency applied to the activated sludge also due to sludge source difference It include: that 8000Hz or more has good efficiency, energy density of wave is directly proportional to Treatment of Sludge load capacity, more specifically, wave energy Density is at 5000-40000 joule/kilogram (sludge).
S4: generating device energy wave resonance collaboration electric osmose electrophoresis dehydration: is modulated in the energy wave setpoint frequency by wave Selection resonance wave frequency rate identical with the combination bond frequency resonates in range, destroys hydrone in the activated sludge colloid With the associative key of solid granulates, concussion dehydration is carried out to the activated sludge, while voltage is applied to the activated sludge and is carried out Electric osmose electrophoresis, migrates out hydrone thoroughly.
According to some embodiments of the present invention, it is mechanical wave, electromagnetic wave or height that the energy wave of modulating device, which occurs, for the wave One of frequency Sasser is a variety of, i.e., single or collaboration resonance, wave frequency rate is 1000-5000Hz or 8000Hz or more, drop The combination energy of low water and solid granulates destroys and combines binding force.
According to some embodiments of the present invention, the mode of the electric osmose electrophoresis are as follows: constant current constant voltage pulse mode or pulse Reversing mode, wherein voltage 5-100V, current density 1-50A/dm3, pulse frequency it is identical as the resonance wave frequency rate into Row resonance superposition cooperation.Fig. 2 is electric osmose principle of electrophoresis schematic diagram of the present invention, and Fig. 3 is electric osmose electrophoresis dehydration of the present invention signal Figure, referring to shown in Fig. 2-3, electric osmose electrophoresis is to apply voltage between mobile and fixed electrode to carry out, the present invention by sludge into While row standard is superimposed, then by applying potential voltage between anodic-cathodic, make hydrone according to the mode of electric osmose electrophoresis It is separated with solid granulates, thoroughly migrates out and achieve the purpose that dehydration and drying, be situated between by the strainer that electric osmose electrophoresis trench bottom is arranged Matter filters out.
According to some embodiments of the present invention, the electrode is made of nonmetallic superconductor original part, can be for a long time It bears big pulse current and preferably endures the sludge corrosive environment of separate sources harshness.
According to an embodiment of the invention, the mensuration mode of the combination bond frequency (identical as resonance wave frequency), main to wrap Include following steps: due to having fluid behaviour under pending mud earthquake environment, according to fluid mechanics principle we it follows that
Wherein: P is wavelength unit wave energy flux, and H is wave height, and T is the period；B is medium fluid density, and g adds for gravity Speed.
Wherein: E is the energy density (joule/square metre) of unit horizontal area, i.e., horizontal plane unit area action potential it With.
According to classical double electrode layer theory:
Wherein:For laplacian, ε=ε0εr, ε, ε0And εrRespectively dielectric constant, permittivity of vacuum and phase To dielectric constant, ρ is the density of volume charges.
After introducing corresponding boundary condition, solution of equation are as follows:
Wherein: (3) Ei=ziE ξ,
ziFor i-th kind of particle valence in colloid, e is substantially single electron charge, ni 0For in bulk solution particle i it is dense Degree, k are Boltzmann constant, T absolute temperature, EiSolids are moved into electric double layer position by bulk solution to need to do Function or energy.
According to above formula, EiNamely corresponding amount hydrone is moved fully into required for bulk solution from electric double layer position The function done.In conjunction with above-mentioned hydrodynamics formula, we can establish a resonance wave frequency rate, the wave parameters such as wave amplitude and sludge colloid Corresponding relationship between chemical parameters: by measurement electrochemistry conditioning after activated sludge electric double layer Zeta potential ξ, obtain through E in allusion quotation double electrode layer theoryi(formula 3), then by the formula (2) in fluid mechanics principle it is found that E is multiplied by as total after area E in the function that energy needs to do in other words, as formula (3)i, it therefore, can be in the hope of wave height (amplitude) H, then pass through fluid force The formula (1) in principle is learned it is found that P is multiplied by being the gross energy function that needs to do in other words after wavelength, the as E in formula (2), Can be in the hope of cycle T, inverse is to combine bond frequency, that is, corresponding amount hydrone is moved fully into ontology from electric double layer position The corresponding resonance wave frequency rate of the function done required for solution.
It according to some embodiments of the present invention, further include step S5: when the combination bond frequency of the activated sludge is not in institute It states within the scope of energy wave setpoint frequency, needing to be added the activated sludge electrolyte and improving to pH value is 6.3- After 7.5, after carrying out the conditioning of above-mentioned steps S2 electrochemistry, the combination bond frequency for obtaining its electric double layer current potential resonates wave frequency in other words Rate can reach within the scope of energy wave setpoint frequency, then carry out step S4, wherein additive amount is that sludge per ton adds 0.5-3kg electricity Xie Zhi.
According to an embodiment of the invention, the concussion dehydration is specifically includes the following steps: S401: adding the conditioning Agent shakes activation after being improved；S402: mechanical separation of solid and liquid primary dewatering is carried out after concussion activation；S403: step is repeated After the multiple concussion of S401 progress activates superposition, progress machinery is separated by solid-liquid separation deep dehydration, wherein described to shake the total of dehydration Time is 5-30 minutes, and the device of the mechanical dehydration includes: a variety of mechanical dehydration sides such as belt filter press or plate type pressure filter Formula is selected according to accomplished continuously or intermittently property operating feature, there is satisfied dehydration efficiency.
According to an embodiment of the invention, the method for the invention step all carries out at room temperature.
Embodiment 1: electroplating sludge to be processed:
1. taking 100 kilograms of above-mentioned sludge to be placed in conditioner carries out flocculation chemical conditioning: PDADMAC 0.75%, ackd salt Class mixture 0.28%.
2. conditioning terminates to be transferred to electrochemical reactor progress activating catalytic.
3. selecting wave resonant frequency 1500Hz, three-level resonance mode is dehydrated 15-20 minutes under pressure drainage；It resonates in wave While, 55V electric osmose electrophoretic voltage deep dehydration is applied to sludge.
4. moisture percentage in sewage sludge reaches 40-45% after depth desiccation.
In conclusion method provided by the invention is simple, condition is easy to control；Surfactant and electrolyte and electricity is added Chemical catalysis conditioning, effectively improves the bonding state parameter of water, keeps wave resonance superposition controllable, predictable and can in one The effective range of operation carries out；Method provided by the invention is that water discharges separation under liquid phase state, without overcoming big phase transformation Can, energy consumption is lower；The energy wave frequency rate that the present invention selects is adjusted according to the characteristic parameter after different sludge conditionings, because And it is high-efficient adapt to it is wide；The present invention is easily isolated, method is easy easily under electric field action by the hydrone of concussion activation Control can reach best dehydration purpose through constant current constant voltage pulse or commutation multiple choices to different sludge；The present invention be easy to Other machinery, chemically and physically dehydration equipment synergistic applications, can achieve good dehydration efficiency and desiccation effect.
In the description of this specification, reference term " embodiment ", " some embodiments ", " example ", " specific embodiment ", Or the description of " some examples " etc. means particular features, structures, materials, or characteristics packet described in conjunction with this embodiment or example Contained at least one embodiment of the present invention or example.In the present specification, schematic expression of the above terms need not needle Pair be identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can any one or It can be combined in any suitable manner in multiple embodiment or examples.In addition, without conflicting with each other, those skilled in the art The feature of different embodiments or examples described in this specification and different embodiments or examples can be combined and group It closes.
Although the embodiments of the present invention has been shown and described above, it is to be understood that above-described embodiment is example Property, it is not considered as limiting the invention, those skilled in the art within the scope of the invention can be to above-mentioned Embodiment is changed, modifies, replacement and variant, at the same time, for those skilled in the art, the think of according to the application Think, there will be changes in the specific implementation manner and application range.

Claims (10)

  1. The electrochemistry deep dehydration method for sludge 1. a kind of wave resonates, which comprises the following steps:
    S1: flocculation chemical conditioning: 3-15kg conditioner is added in sludge per ton and carries out chemical conditioning；
    S2: electrochemistry conditioning: after chemical conditioning, moving into the electrochemical reactor that voltage is 3-10V for sludge and carry out catalytic activation, Make the reduction of sludge colloid electric double layer current potential, and the combination bond frequency of hydrone and solid granulates reaches energy wave in the sludge colloid Within the scope of setpoint frequency, activated sludge is obtained；
    S3: the confirmation of energy wave setpoint frequency: selecting the energy wave setpoint frequency applied to the activated sludge is 1000-5000Hz；
    S4: generating device energy wave resonance collaboration electric osmose electrophoresis dehydration: is modulated in the energy wave setpoint frequency range by wave It is interior that resonance wave frequency rate identical with the combination bond frequency is selected to resonate, it destroys hydrone in the activated sludge colloid and consolidates The associative key of state particle carries out concussion dehydration to the activated sludge, while applying voltage to the activated sludge and carrying out electric osmose Electrophoresis migrates out hydrone thoroughly.
  2. The electrochemistry deep dehydration method for sludge 2. wave according to claim 1 resonates, which is characterized in that the electric osmose electrophoresis Mode are as follows: constant current constant voltage pulse mode, wherein voltage 5-100V, current density 1-50A/dm3, pulse frequency and institute It is identical to state resonance wave frequency rate.
  3. The electrochemistry deep dehydration method for sludge 3. wave according to claim 1 resonates, which is characterized in that the energy wave is set Determining corresponding electric double layer potential range when frequency is 1000-5000Hz is ± 50mV.
  4. The electrochemistry deep dehydration method for sludge 4. wave according to claim 1 resonates, which is characterized in that the conditioner packet Include: surfactant and electrolyte, wherein the surfactant be cationic surfactant, the electrolyte be alkali or One of alkali salt is a variety of.
  5. The electrochemistry deep dehydration method for sludge 5. wave according to claim 4 resonates, which is characterized in that further include step S5: when the combination bond frequency of the activated sludge is not within the scope of the energy wave setpoint frequency, to activated sludge progress It adds after the electrolyte improves and be 6.3-7.5 to pH value, then carries out step S4, wherein additive amount is that sludge per ton adds 0.5-3kg electrolyte.
  6. The electrochemistry deep dehydration method for sludge 6. wave according to claim 1 resonates, which is characterized in that carrying out the wadding When solidifying chemical conditioning, the pH value of sludge is improved to 6.3-7.5.
  7. The electrochemistry deep dehydration method for sludge 7. wave according to claim 1 resonates, which is characterized in that the concussion dehydration Processing is specifically includes the following steps: S401: adding and shakes activation after the conditioner is improved；S402: concussion activation is laggard Row is mechanical to be separated by solid-liquid separation primary dewatering；S403: it repeats step S401 and carries out after repeatedly shaking activation superposition, carry out mechanical solid-liquid and divide From deep dehydration, wherein the total time of the concussion dehydration is 5-30 minutes.
  8. The electrochemistry deep dehydration method for sludge 8. wave according to claim 7 resonates, which is characterized in that the mechanical dehydration Device include: belt filter press or plate type pressure filter.
  9. The electrochemistry deep dehydration method for sludge 9. wave according to claim 1 resonates, which is characterized in that selection is to the activation The energy wave setpoint frequency that sludge applies further include: 8000Hz or more.
  10. The electrochemistry deep dehydration method for sludge 10. wave according to claim 9 resonates, which is characterized in that the wave occurs The energy wave of modulating device is one of mechanical wave, electromagnetic wave or high frequency shock wave or a variety of, wave frequency rate 1000- 5000Hz or 8000Hz or more, energy density of wave are directly proportional to Treatment of Sludge load capacity.
CN201810876809.9A 2018-08-03 2018-08-03 A kind of wave resonance electrochemistry deeply dehydrating sludge technology Pending CN109052895A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113441100A (en) * 2021-07-22 2021-09-28 西安近代化学研究所 Device and method for enhancing chemical reaction through acoustic resonance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113441100A (en) * 2021-07-22 2021-09-28 西安近代化学研究所 Device and method for enhancing chemical reaction through acoustic resonance

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