CN108218159A - A kind of high-voltage pulse electrolysis device and the belt-type sludge press filter processing system for adding the device - Google Patents
A kind of high-voltage pulse electrolysis device and the belt-type sludge press filter processing system for adding the device Download PDFInfo
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- CN108218159A CN108218159A CN201810057452.1A CN201810057452A CN108218159A CN 108218159 A CN108218159 A CN 108218159A CN 201810057452 A CN201810057452 A CN 201810057452A CN 108218159 A CN108218159 A CN 108218159A
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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
- 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
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (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)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention discloses a kind of high-voltage pulse electrolysis device and adds the belt-type sludge press filter processing system of the device.Device is electrolysed including high-voltage pulse, further include dioxygen water storage tank and hydrogen peroxide metering pump, dioxygen water storage tank is connected to sludge concentration tank by hydrogen peroxide metering pump and pipeline, sludge concentration tank connection connects additional high-pressure pulser with pipeline by sludge variable pump, is attached the pulser that adds high pressure and sludge is delivered to the dehydration of sludge dewatering belt type sludge filter press after high-voltage pulse is handled again.Sludge dewatering system of the present invention is suitable for the excess sludge deep dehydration of trade effluent and municipal wastewater treatment plant, has the advantages that easy to operate, easy to maintain and low energy consumption.
Description
(1) technical field
The present invention relates to the belt-type sludge press filter processing systems of a kind of high-voltage pulse electrolysis device and the additional device, belong to
Field of solid waste treatment.
(2) background technology
With the industrialized development in China, amount of sludge is more and more huger, and according to statistics, national the planned city, county add up to build
Into urban wastewater treatment firm more than 40000, about 1.50 hundred million m of sewage treatment capacity3/ d, year generate the sludge of water content 80%
Ten thousand t more than 3500.Biological floe of these sludge by activated sludge, mushroom cell composition have containing poisonous and harmful in inorganic particle
Machine object, heavy metal ion and each quasi-microorganism containing a large amount of bacteriums.At present, the sludge dewatering mode of urban wastewater treatment firm be from
The dewatering types such as the heart, squeezing, this mechanical dehydration mode can only take off moisture percentage in sewage sludge to 80%.National environmental protection portion ring is done
[2010] No. 157《About the notice for strengthening urban sewage treatment plant sludge prevention and cure of pollution work》It is required that " sewage treatment plant is to store
Sludge is transported into factory circle for the purpose of (disposition is not handled deposit), it is necessary to by sludge dewatering to moisture content below 50%." therefore,
Deeply dehydrating sludge processing is reduced into moisture content to 50% hereinafter, current sludge reduction, the urgent of harmless treatment target are essential
It asks.
Moisture in sludge is generally categorized into void among particles water, four class of capillary water, the absorption water of particle and internal water,
The relationship for the degree that various moisture are combined with mud granule can be expressed as：Internal water>Adsorb water>Capillary water>Interstitial water more exists
Preceding combination degree is higher, is more difficult to remove.The main reason for mechanical treatment moisture percentage in sewage sludge is high is the steady of zoogloea network in sludge
It is set for using, these zoogloeas are difficult to be mechanically destruction, and the rigid structure of sludge microbe cell wall hinders intracellular
The release of moisture.The sludge of more than 80% moisture content is further dehydrated, needs to pre-process sludge, improves sludge
After dewatering, deep dehydration further is carried out to sludge by other measures, sludge cake moisture content is made to reach less than 50%.
Sludge dewatering technology in the country's includes filtration method and centrifugal process mainly using mechanical dehydration at present.Device is mainly
Sludge centrifuge and sludge filter press.Sludge centrifuge is reached by means of tendency to drift aways different caused by solid, liquid difference in specific gravity in sludge
To mud-water separation.Centrifugal dehydrator have can continuous production, the advantages of automatically controlling and take up little area, but the requirement of sludge pretreatment
It is higher.The equipment of filtration method has plate and frame filter press, vacuum filter and band filter.Plate and frame filter press is commonly used for chemical industry and is set
Standby, filtered driving force is big, and moisture content of the cake is relatively low, is interval into mud, mud extraction, and productivity is relatively low.Vacuum filter continuously into
Mud, continuous mud extraction, operates steadily, but affiliated facility is more.Band filter is novel filter, there is rotating belt, de- on one side
Water, transports mud on one side, and device is more complicated.Above-mentioned mechanical dehydration method is mainly used for digested sludge and primary sedimentation pond sludge, sludge
Such as without Chemical treatment, moisture content of the cake is generally more than 80%.Main two kinds of deeply dehydrating sludge mode, one kind plus chemistry
Reagent improves, such as adds in flocculant, lime conditioning, then carry out mechanism filter-pressing dehydration, and this method sludge quantity will increase 10-
20%, and secondary pollution is generated to filtering water.Another method is heat treatment method, is dried naturally using heat drying, solar energy
The methods of dry, provides thermal energy, destroys sludge micella by heating means, dissociates sludge internal water, is heat-treated consumption mass energy,
Natural drying then needs place to accumulate sludge, and easily generates stench etc. in the drying process, and polluted underground water, now
It is prohibited from using.
Electroosmose process treated sewage, sludge have more research, generally use iron or iron electrode, in electrolytic process
Anodic solution iron ion has flocculation, and electrodialysis and press filtration are combined, and carries out press filtration to sludge simultaneously in electrodialysis, can have
Effect improves the dehydration efficiency of sludge.But electroosmose process power consumption is big, fever phenomenon is apparent, still the difficult micella in biochemical sludge
Water.Therefore, it develops a kind of industrialization deep dehydration of Direct Dehydration to moisture content of the cake less than 60% and handles sludge system, solve
The problem of belt press filtration sludge treater moisture content is high has especially important meaning for reducing sludge quantity and sludge treatment.
(3) invention content
The purpose of the present invention is to propose to a kind of high-voltage pulse electrolysis devices and the belt-type sludge press filter for adding the device to be handled
System in the system, before sludge enters belt, is handled by dirty high-voltage pulse electrolysis, dissociate internal water in sludge and
Water is adsorbed, realizes belt filter press high-efficiency dehydration processing sludge.
For achieving the above object, the present invention adopts the following technical scheme that：
A kind of high-voltage pulse is electrolysed device, it is characterised in that cloudy by high-voltage pulse power source, high-voltage pulse anode, high-voltage pulse
Pole, auxiliary doser composition, the high-voltage pulse power source include positive pulse, negative pulse, positive negative sense dipulse, and pulse voltage is
0-60kV is adjustable, and pulse current 0-50mA is adjustable, and pulse frequency 10-100Hz is adjustable；The high-voltage pulse anode is exhausted for cladding
The metal or alloy electrode of edge material, cathode be coat insulating materials metal or alloy electrode, electrode spacing 10-50cm.
Preferably, the additional high-pressure pulser is diaphragm-free electrolysis device, it is rectangular groove structure or drum type
Structure, the insulating materials be polyethylene, polypropylene, polyvinyl chloride and polytetrafluoroethylene (PTFE), insulation thickness 0.5-5cm.
Preferably, a kind of belt-type sludge press filter processing system of high-pressure pulse device, fills comprising above-mentioned high-voltage pulse
It puts, further includes dioxygen water storage tank and hydrogen peroxide metering pump, dioxygen water storage tank is connected to sludge by hydrogen peroxide metering pump and pipeline
Concentration basin, sludge concentration tank connection connect additional high-pressure pulser with pipeline by sludge variable pump, are attached the pulse dress that adds high pressure
It puts and sludge is delivered to the dehydration of sludge dewatering belt type sludge filter press after high-voltage pulse is handled again.
Preferably, the operating voltage U of the processing system passes through high-voltage pulse anode composite insulating material thickness Y and height
Pulsed cathode composite insulating material thickness X is pressed to adjust, operating voltage is U=C × (X+Y), and X, Y are electrode outer layer insulation thickness
Degree, C be and sludge quality, insulating layer material and the relevant constant of electrode spacing,
Preferably, when being handled using above-mentioned mud press filtration processing system, mud dry weight 0.005-0.02% is first added in
20% concentration hydrogen peroxide, biochemical sludge by 0.5-60kV high voltage pulses processing after input sludge dewatering belt filter press,
Obtain the sludge cake of moisture content 45-65%.
Preferably, sludge residence time in additional high-pressure pulser is 1-30 minutes.
Preferably, high-voltage pulse processing unit can also be made in decanter centrifuge, plate and frame filter press processing sludge system
Application for pretreatment unit.
The sludge main source is sewage disposal plant excess sludge, after sanitary sewage and Industrial Waste Water Treatments
Excess sludge.
Apparatus of the present invention handle sludge and chemical method and oven drying method compares, and have the advantages that following prominent：(1) may be used
It is 45-65% that directly biochemical sludge, which is dehydrated to moisture content,；(2) high-voltage pulse processing unit and with belt filter press, sheet frame pressure
A variety of sludge dehydration device combinations such as filter, decanter centrifuge；(3) compared to heat drying, low energy consumption.
(4) it illustrates
Fig. 1 is a kind of belt-type sludge press filter processing system schematic diagram of additional high-pressure pulser of the present invention.
Fig. 2 is high-field electrode cathode schematic diagram of the present invention.
Fig. 3 is high-field electrode anode schematic diagram of the present invention.
Wherein 1- high-voltage pulse power sources, 2- additional high-pressure electrolysis units, 3- belt type sludge dehydration filter press, 4- sludge condensations
Pond, 5- dioxygen water storage tanks, 6- belt conveyors, 7- sludge variable pumps, 8- hydrogen peroxide metering pumps, the pulse of 9- cylindrical pressures are cloudy
Pole, A- cathodic metal plates, B- and cathode composite insulating board, X- cathode insulation plate thickness, the disk-shaped high-voltage pulse anode poles of 10-
(being rolled into cylindrical shape), C- anode metal plates, D- and anode composite insulating board.
(5) specific embodiment
In order to make the purpose of the present invention and technical solution and advantage clearer, the present invention is said with following embodiment
It is bright, but the present invention is not limited to these examples.
Embodiment 1
With reference to Fig. 1-Fig. 3：The belt-type sludge press filter processing system of additional high-pressure pulser as shown in Figure 1, by high-tension pulse
It rushes electrolysis unit 2, dioxygen water storage tank 5 and hydrogen peroxide metering pump 8, be arranged in belt type sludge filter press processing sludge system.It will
Cylindrical anode connects high-voltage pulse power source anode, and cylindrical cathode connection pulse power cathode, power supply is 0-60kV negative pulses
Power supply 1, pulse frequency 0-100Hz is adjustable, and anode is grounded while connecting Gaoyang plate.Entire high-pressure electrolysis device other
It insulate with filter press and ground part.
The belt-type sludge press filter processing system of additional high-pressure pulser used in the embodiment of the present invention, additional high-pressure pulse
Electrolysis unit, anode 10 be stainless steel polypropylene composite material, stainless steel plate C thickness 0.5mm, polypropylene lining plate D thickness 5mm,
A diameter of 60cm cylinders of opening are formed, are highly 100cm, bottom and welding polypropylene board；9 cylinder conductive metal A of cathode
For copper rod, diameter 5cm, composite polypropylene stick B annulus thickness X is 2cm.Anode stainless steel is connected into pulse power anode, simultaneously
Anode is connected into ground wire；Cathode copper rod connects pulse power cathode.The pulse power is negative unidirectional pulse, and voltage 0-60kV is adjustable,
Pulse frequency is 50Hz,.Sewage plant excess sludge is conveyed in sludge concentration tank 4, moisture percentage in sewage sludge 95-100%, sludge
Sludge retention time is 10min in 7 flow control high-voltage pulse of variable pump electrolysis device 2, i.e. sludge is electrolysed slot in high-voltage pulse
Middle flow velocity is 1500kg/h.20% hydrogen peroxide is added in dioxygen water storage tank 5,8 flows of pump are 200g/h.Treat that sludge is full of pulse
After electrolysis unit, unbalanced pulse power supply, adjusting pulse voltage is 10kV.Through extra pulse treated sludge, by belt conveyor 6
It is handled into test-type belt type sludge filter press 3.It is 56.6% to test moisture percentage in sewage sludge.
Embodiment 2-17
As described in Example 1, in the belt-type sludge press filter processing system of additional high-pressure pulser, anode is constant,
Pulse frequency is 50Hz, changes cathode insulation layer thickness X and pulse output voltage, residence time, dioxygen water flow, and experiment is above-mentioned
The moisture content of sludge after belt-type sludge press filter is tested in influence of the technological parameter to deeply dehydrating sludge.The wherein pole of pulse voltage
Limit value and cathode are related with the thickness of insulating layer of anode, and operating voltage is U=C × (X+Y), and X, Y are electrode outer insulation
Thickness, C be and sludge quality, insulating layer material and the relevant constant of electrode spacing, can be to prevent by suitable thickness of insulating layer
Only it is broken down by high-voltage.Result of the test such as table 1.
The belt-type sludge press filter processing system technological parameter of 1 additional high-pressure pulser of table influences dehydration rate
Embodiment 18-21
As described in Example 1, in the belt-type sludge press filter processing system of additional high-pressure pulse electrolysis device, cathode is exhausted
Edge layer thickness is 2 centimetres, pulse output voltage 10kV, pulse frequency 50Hz, residence time 10min.Sludge source is changed into
Municipal sludge sewage plant and the excess sludge of trade effluent factory, will electrolysis treated sludge respectively with plate and frame filter press and
Mechanical centrifuge dehydration, plate and frame filter press are hydraulic pressure filter, pressure 1MPa.Experimental result such as table 2.
The belt-type sludge press filter processing system sludge types and mechanical dehydration result of 2 additional high-pressure pulser of table
| Embodiment | Sludge types | Sludge source | Pulse current/A | Dewatering type | Moisture content/% |
| 18 | Municipal sludge | Municipal wastewater treatment plant | 0 | Plate compression | 59.1 |
| 19 | Municipal sludge | Municipal wastewater treatment plant | 0 | Centrifugal dehydration | 56.8 |
| 20 | Industrial sludge | Enterprise's sewage plant | 0 | Plate compression | 61.2 |
| 21 | Industrial sludge | Enterprise's sewage plant | 0 | Centrifugal dehydration | 58.3 |
Claims (7)
1. a kind of high-voltage pulse is electrolysed device, it is characterised in that cloudy by high-voltage pulse power source, high-voltage pulse anode, high-voltage pulse
Pole, auxiliary doser composition, the high-voltage pulse power source include positive pulse, negative pulse, positive negative sense dipulse, and pulse voltage is
0-60kV is adjustable, and pulse current 0-50mA is adjustable, and pulse frequency 10-100Hz is adjustable；The high-voltage pulse anode is exhausted for cladding
The metal or alloy electrode of edge material, cathode be coat insulating materials metal or alloy electrode, electrode spacing 10-50cm.
A kind of 2. high-voltage pulse electrolysis device according to claim 1, it is characterised in that the additional high-pressure pulse dress
Diaphragm-free electrolysis device is set to, is rectangular groove structure or drum type structure, the insulating materials is polyethylene, polypropylene, is gathered
Vinyl chloride and polytetrafluoroethylene (PTFE), insulation thickness 0.5-10cm.
A kind of 3. belt-type sludge press filter processing system of high-voltage pulse electrolysis device, it is characterised in that belt-type sludge press filter processing system
Electrolysis unit is filled comprising high-voltage pulse described in claim 1 in system, further includes dioxygen water storage tank and hydrogen peroxide metering pump, dioxygen
Water storage tank is connected to sludge concentration tank by hydrogen peroxide metering pump and pipeline, and sludge concentration tank is connected by sludge variable pump and pipeline
Additional high-pressure pulser is connected, the pulser that adds high pressure is attached and sludge is delivered to sludge dewatering after high-voltage pulse is handled again
Belt type sludge filter press is dehydrated.
4. a kind of belt-type sludge press filter processing system of additional high-pressure pulse electrolysis device according to claim 3, special
Sign is that the operating voltage U of the processing system passes through high-voltage pulse anode composite insulating material thickness Y and high-voltage pulse cathode
Composite insulating material thickness X adjust, U=C × (X+Y), X, Y be pole plate coat insulating layer thickness, C be and sludge quality, absolutely
Edge layer material and the relevant constant of electrode spacing.
5. the method for the belt-type sludge press filter processing system processing sludge of a kind of additional high-pressure pulser, it is characterised in that add in
The 20% concentration hydrogen peroxide of mud dry weight 0.005-0.02%, biochemical sludge input after the processing of 10-60kV high voltage pulses
Sludge dewatering belt filter press obtains the sludge cake of moisture content 45-65%.
6. a kind of belt-type sludge press filter processing system processing sludge of additional high-pressure pulser according to claim 4
Method, it is characterised in that sludge residence time in additional high-pressure pulser is 1-30 minutes.
7. a kind of high-voltage pulse processing unit is used as pretreatment unit in decanter centrifuge, plate and frame filter press processing sludge system
Application.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810057452.1A CN108218159A (en) | 2018-01-22 | 2018-01-22 | A kind of high-voltage pulse electrolysis device and the belt-type sludge press filter processing system for adding the device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115159794A (en) * | 2022-07-11 | 2022-10-11 | 南京苏曼等离子科技有限公司 | Low-pressure high-frequency sludge wall breaking and dewatering device |
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| CN107055984A (en) * | 2016-12-01 | 2017-08-18 | 浙江工业大学 | A kind of method that high-voltage pulse electrolytic tension filter method deep dehydration handles sludge |
| CN107055985A (en) * | 2016-12-01 | 2017-08-18 | 浙江工业大学 | A kind of plate frame press filter device of additional electrolysis deep dehydration sludge |
| CN208279480U (en) * | 2018-01-22 | 2018-12-25 | 浙江工业大学 | A kind of high-voltage pulse electrolysis device and the belt-type sludge press filter processing system for adding the device |
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| CN107055984A (en) * | 2016-12-01 | 2017-08-18 | 浙江工业大学 | A kind of method that high-voltage pulse electrolytic tension filter method deep dehydration handles sludge |
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| CN115159794A (en) * | 2022-07-11 | 2022-10-11 | 南京苏曼等离子科技有限公司 | Low-pressure high-frequency sludge wall breaking and dewatering device |
| CN115159794B (en) * | 2022-07-11 | 2023-10-27 | 南京苏曼等离子科技有限公司 | Low-pressure high-frequency sludge wall-breaking dehydration device |
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