CN110240387B - Rotary electroosmosis sludge dewatering system and method for oxidative degradation of organic matters - Google Patents
Rotary electroosmosis sludge dewatering system and method for oxidative degradation of organic matters Download PDFInfo
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- CN110240387B CN110240387B CN201910490898.8A CN201910490898A CN110240387B CN 110240387 B CN110240387 B CN 110240387B CN 201910490898 A CN201910490898 A CN 201910490898A CN 110240387 B CN110240387 B CN 110240387B
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- 238000005370 electroosmosis Methods 0.000 title claims abstract description 101
- 239000010802 sludge Substances 0.000 title claims abstract description 77
- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000010525 oxidative degradation reaction Methods 0.000 title claims abstract description 14
- 239000003814 drug Substances 0.000 claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000018044 dehydration Effects 0.000 claims abstract description 22
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 22
- 230000008569 process Effects 0.000 claims abstract description 20
- 238000005516 engineering process Methods 0.000 claims abstract description 14
- 238000002347 injection Methods 0.000 claims abstract description 14
- 239000007924 injection Substances 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 14
- 230000003647 oxidation Effects 0.000 claims abstract description 12
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 12
- 239000007921 spray Substances 0.000 claims abstract description 11
- 239000005416 organic matter Substances 0.000 claims abstract description 10
- 239000000203 mixture Substances 0.000 claims abstract description 4
- 238000003860 storage Methods 0.000 claims description 53
- 238000005507 spraying Methods 0.000 claims description 21
- 238000003756 stirring Methods 0.000 claims description 20
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 16
- 239000003795 chemical substances by application Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 13
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 9
- 239000004343 Calcium peroxide Substances 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 8
- LHJQIRIGXXHNLA-UHFFFAOYSA-N calcium peroxide Chemical compound [Ca+2].[O-][O-] LHJQIRIGXXHNLA-UHFFFAOYSA-N 0.000 claims description 8
- 235000019402 calcium peroxide Nutrition 0.000 claims description 8
- PFUVRDFDKPNGAV-UHFFFAOYSA-N sodium peroxide Chemical compound [Na+].[Na+].[O-][O-] PFUVRDFDKPNGAV-UHFFFAOYSA-N 0.000 claims description 7
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 6
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 6
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 6
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 6
- 239000007800 oxidant agent Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000000593 degrading effect Effects 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000011068 loading method Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 7
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 5
- 239000003153 chemical reaction reagent Substances 0.000 description 3
- 230000005684 electric field Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- -1 hydrogen ions Chemical class 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- TUJKJAMUKRIRHC-UHFFFAOYSA-N hydroxyl Chemical compound [OH] TUJKJAMUKRIRHC-UHFFFAOYSA-N 0.000 description 1
- 239000010954 inorganic particle Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002905 metal composite material Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000000967 suction filtration Methods 0.000 description 1
- 238000007725 thermal activation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003828 vacuum filtration Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- 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
- C02F11/15—Treatment of sludge; Devices therefor by de-watering, drying or thickening by treatment with electric, magnetic or electromagnetic fields; by treatment with ultrasonic waves
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Treatment Of Sludge (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model provides an oxidative degradation organic matter rotation type electroosmosis sludge dewatering system, including automatic pole constant voltage constant current power supply that falls, adjustable speed electric drive arrangement, negative pole rotary rod and cylindrical electroosmosis reactor, the inside of electroosmosis reactor is provided with the positive pole barrel, automatic pole constant voltage constant current power supply falls respectively with negative pole rotary rod and positive pole barrel through the wire and is connected, the injection installation slot hole has been seted up at the top of electroosmosis reactor and positive pole barrel, install spray type medicine sprinkling device in the injection installation slot hole, the mud mouth has been seted up to the bottom of electroosmosis reactor. The invention also discloses a dehydration method of the oxidative degradation organic matter rotary electroosmosis sludge dehydration system. The invention adopts the rotary electroosmosis oxidation organic matter dehydration technology, can greatly reduce the water content of the sludge, greatly reduce the corrosion degree of the anode cylinder, uniformly mix the medicament and the sludge, and greatly improve the dehydration efficiency; the mud loading and mud cake taking out processes are convenient and quick.
Description
Technical Field
The invention belongs to the technical field of sludge dewatering treatment, and particularly relates to a rotary electroosmosis sludge dewatering system and method for oxidative degradation of organic matters.
Background
Sludge is a product obtained after sewage treatment and is formed by organic residues, bacterial cells, inorganic particles, colloid and the like and complex non-uniform mass thereof. With the rapid development of Chinese economy, town sludge, oily sludge, medical sludge and the like are also increasing, and if standardized treatment and disposal are not obtained, secondary pollution is generated to the ecological environment, and adverse effects on animal and plant health and human health are possible. Research shows that deep dehydration of sludge can reduce the disposal difficulty, and can change waste into valuable for reuse.
At present, most of sewage treatment plants in China adopt a mechanical dehydration method, which comprises the following steps: the technologies of vacuum filtration, mechanical squeezing, centrifugal filtration and the like only carry out shallow treatment on the sludge, and cannot meet the requirements of national subsequent treatment.
For many of the above reasons, many experts and scholars have a great deal of interest in deep sludge dewatering technology. For example, the advanced oxidation system is only aimed at liquid sludge with high water content, but needs to combine a large amount of inorganic medicaments to treat the sludge, so that the sludge cannot be directly utilized, and equipment is damaged.
Chinese patent literature (publication No. CN 103693827A) discloses a pretreatment process for dehydrating advanced oxidized sludge, wherein the water content of specific sludge is 85-95%, feSO is obtained 4 ·7H 2 O、K 2 FeO 4 、 K 2 MnO 4 And H 2 O 2 Uniformly mixing according to a proportion to obtain a sludge dewatering pretreatment reagent, stirring the diluted sludge for more than 10 minutes, then adjusting the pH value of sludge slurry to be 2.5-3.5, stirring for more than 10 minutes again to obtain sludge acid liquor, stirring the sludge pretreatment reagent for reaction, and carrying out suction filtration and dewatering to obtain a sludge cake. The technology adds a large amount of inorganic conditioning agent, the treated filtrate is highly acidic, equipment is corroded in the practical application process, and the technology is complex and difficult to realize.
Electroosmosis technology has begun to be applied to dewatering of sludge as an emerging deep dewatering technology, however, conventional electroosmosis technology still has a number of drawbacks: (1) When the electroosmosis dehydration technology is independently used, the sludge anode is seriously dried, cracks appear in the sludge cake, the contact area between the sludge cake and the anode plate is reduced, and the sludge dehydration effect is poor; (2) the electroosmotic anode plate is severely corroded; (3) The mud cake cathode and anode has uneven water distribution, low water content of the anode and high water content of the cathode, and the water content is different by 10% -20%.
The Chinese patent literature (publication No. CN 105800891A) discloses a sludge dewatering method with electroosmosis and mechanical pressure coupling. The mechanical filter pressing method is firstly used for dehydrating the sludge to 75% -80%, then electroosmosis and mechanical filter pressing are carried out for coupling dehydration, and the water content of the sludge can be reduced to below 50% by alternating pressure transformation.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a rotary electroosmotic sludge dewatering system and method for oxidative degradation of organic matters, which are characterized in that a small amount of advanced oxidant is added, an anode rotary rod cannot be excessively corroded to damage equipment, the pH value is close to neutral, the sludge moisture is uniformly distributed, the organic matters are efficiently degraded, and the process is simple and practical.
In order to solve the technical problems, the invention adopts the following technical scheme: the rotary electroosmosis sludge dewatering system for oxidative degradation of organic matters comprises an automatic reverse pole type constant voltage constant current power supply, an adjustable speed electric driving device, a bottom frame and a cylindrical electroosmosis reactor, wherein a bedplate is arranged on the bottom frame, four inclined supporting rods are arranged on the bedplate, the lower ends of the four inclined supporting rods are hinged on the bedplate through a detachable hinge, the four detachable hinges are positioned on four vertexes of a rectangle, the central line of the electroosmosis reactor is horizontally arranged along the left-right direction, the upper ends of the two inclined supporting rods on the left side are fixedly connected on the left end face of the electroosmosis reactor, the upper ends of the two inclined supporting rods on the right side are fixedly connected on the right end face of the electroosmosis reactor, a cathode rotary rod is rotationally connected with the same central line in the electroosmosis reactor, the power output end of the adjustable speed electric driving device is in transmission connection with one end of the cathode rotary rod, the inside of electro-osmotic reactor is provided with the positive pole barrel with the central line, automatic pole constant voltage constant current power supply falls respectively with negative pole rotary rod and positive pole barrel through the wire, the medicine injection installation slot hole has been seted up at the top of electro-osmotic reactor and positive pole barrel, install spraying type medicine sprinkling device in the medicine injection installation slot hole, the business turn over mud mouth has been seted up to the bottom of electro-osmotic reactor, business turn over mud mouth department is provided with outer apron, outer apron medial surface is provided with the interior cover that the area is less than outer apron, outer apron and interior cover are arc structure, this arc structure coincides with the central line of electro-osmotic reactor, be provided with the filter cloth between inner apron and the outer apron, the through-hole that corresponds with the inner cover is all seted up to the part that outer apron and inner apron correspond to the filter cloth, the inner cup is located the through-hole, the inner cup flushes with the internal surface of positive pole barrel bottom.
The platen is provided with a blanking port positioned below the electroosmosis reactor, the lower surface of the platen is provided with a drawer type water and mud storage bin positioned below the blanking port, and the middle part in the drawer type water and mud storage bin is horizontally provided with a supporting net.
The spray type medicine spraying device comprises a cuboid-shaped medicine storage box, wherein the lower part of the medicine storage box is fixedly arranged in a medicine injection installation long hole, the upper part of the medicine storage box is fixed at the top of an electroosmosis reactor through a U-shaped buckle, a first sealing strip is arranged between the periphery of the medicine storage box and the peripheral side wall of the medicine injection installation long hole, the lower surface of the medicine storage box is flush with the inner side surface of the top of an anode cylinder, a plurality of medicine spraying micropores are uniformly formed in the bottom of the medicine storage box, a connecting pipe with an open top is respectively arranged on the left side and the right side of the top of the medicine storage box, and a first injector and a second injector are respectively correspondingly arranged in the connecting pipes on the left side and the right side.
The right side of the top of the electroosmosis reactor is provided with a perforation, and the lead passes through the perforation to be connected with the anode cylinder.
The left end and the right-hand member of negative pole rotary rod all rotate through the bearing and connect at the left end face and the right-hand member of electroosmosis reactor, are provided with a plurality of stirring blade that all is located the inside of positive pole barrel on the negative pole rotary rod, and the electroosmosis reactor is stretched out to negative pole rotary rod right-hand member, and the right-hand member of negative pole rotary rod is connected with the power take off of adjustable speed electric drive, is provided with the conductive slip ring who is connected with the wire on the negative pole rotary rod.
The rear side of the outer cover plate is hinged with the electroosmosis reactor through a hinge, the front side of the outer cover plate is connected with the electroosmosis reactor through a hasp, a second sealing strip which is in pressure connection and sealing with the outer surface of the anode cylinder body is arranged on the periphery of the inner cover plate on the inner side surface of the outer cover plate, and the edge of the inner cover plate is connected with the inner side surface of the outer cover plate through a hasp.
The dewatering method of the rotary electroosmosis sludge dewatering system for oxidative degradation of organic matters comprises the following steps,
(1) Filling sludge into an electroosmosis reactor;
(2) Preparing a medicament, and placing the prepared medicament into a spray type medicament spraying device;
(3) Starting an adjustable-speed electric driving device to drive a cathode rotating rod to mix sludge and medicament;
(4) Starting an automatic reverse electrode type constant voltage and constant current power supply, and dehydrating by using an electroosmosis double oxidation technology;
(5) And collecting mud cakes.
The concrete process of the step (1) is that two detachable hinges on the front side are opened, the electroosmosis reactor is turned over backwards upwards by taking the two detachable hinges on the rear side as fulcrums, the buckles connected between the outer cover plate and the electroosmosis reactor are opened, the outer cover plate and the inner cover plate are opened, quantitative sludge is put into the anode cylinder through the sludge inlet and outlet, then the outer cover plate is closed, the buckles are locked, and then the two detachable hinges on the front side are connected to the bedplate to enable the electroosmosis reactor to be stably placed;
the specific process of the step (2) is that corresponding concentration agents are prepared according to the proportion of the selected oxidant to the sludge, wherein the selected agents are sodium peroxide, hydrogen peroxide, calcium peroxide, ammonium persulfate, sodium persulfate or potassium persulfate; one of sodium peroxide, hydrogen peroxide and calcium peroxide is pumped into a first injector, one of ammonium persulfate, sodium persulfate and potassium persulfate is pumped into a second injector, the first injector stretches into a left connecting pipe, liquid medicine is injected into a medicine storage box, then the second injector stretches into a right connecting pipe, the liquid medicine is injected into the medicine storage box, the liquid medicine enters into an anode cylinder through a medicine spraying micropore at the bottom of the medicine storage box, and the two connecting pipes are blocked.
The specific process of the step (3) is that an adjustable-speed electric driving device is started, the adjustable-speed electric driving device drives a cathode rotating rod to rotate, and a stirring blade on the cathode rotating rod rotates to stir and mix the spraying agent and the sludge;
setting the power source inverting time after uniformly mixing, turning on an automatic inverting constant voltage constant current power source, electrifying a cathode rotating rod and an anode cylinder, simultaneously driving a stirring blade to rotate at a constant speed by the cathode rotating rod to continuously stir sludge, finally removing water under the action of double oxidation agents and electroosmosis, and collecting the discharged water in a drawer type water storage and mud storage bin through water permeable holes on an inner cover plate, filter cloth and water permeable holes on an outer cover plate;
the specific process of the step (5) is to turn off the speed-adjustable electric driving device and the automatic reverse pole type constant voltage and constant current power supply,
the two detachable hinges on the front side are opened, the electroosmosis reactor is turned upwards and backwards by taking the two detachable hinges on the rear side as fulcrums, the hasp connected between the outer cover plate and the electroosmosis reactor is opened, the outer cover plate and the inner cover plate are opened, then the electroosmosis reactor is turned over again, mud cakes fall into the drawer type water storage mud bin through the mud inlet and outlet, then the outer cover plate is closed, the hasp is locked, and then the two detachable hinges on the front side are connected to the bedplate to enable the electroosmosis reactor to be stably placed.
By adopting the technical scheme, the dehydration experimental mechanism of the electroosmosis double oxidation technology dehydration is as follows:
the pH value gradient and the electric field intensity can be controlled, and the persulfate can be added at proper temperature to control the OH and SO 4 - The amount of organic matter produced, and then the degradation process of the organic matter in the sludge:
OH and SO in electroosmotic advanced oxidation systems 4 - The generation is mainly achieved by:
(1) Hydrogen peroxide released by the calcium peroxide generates a large amount of hydroxyl free radicals through electrocatalytic reaction under the action of an external electric field;
(2) The persulfate generates a large amount of sulfate radical through electrocatalytic reaction under the action of an external electric field;
(3) Persulfates are capable of releasing a large amount of sulfate radicals under high temperature conditions.
In the process of electroosmosis reaction, a first oxidation reagent with mild reaction is firstly applied to generate hydroxyl free radicals, part of organic matters are decomposed into simple small molecular compounds under the action of the hydroxyl free radicals, at the moment, the temperature in the electroosmosis reactor rises, persulfate is added through a dosing device, a large amount of sulfate radicals are generated under the combined action of electric activation and thermal activation by the persulfate, the organic matters which are difficult to oxidize the hydroxyl free radicals are oxidized again to decompose into the small molecular compounds, and as the sludge continuously rotates, the anode and cathode are reversed according to a certain rule, the pH value in the system is dynamically changed nearby neutrality, and the sulfate radicals and the hydroxyl free radicals can exist stably in the range, so that the degradation effect on the organic matters is improved.
Compared with the prior art, the invention has the following effects:
(1) The invention adopts the rotary electroosmosis oxidation organic matter dehydration technology, can treat municipal sludge, oily sludge and medical sludge with the water content of 75-85 percent, and reduces the water content of the sludge;
(2) The invention mainly aims at the sludge subjected to primary mechanical dehydration;
(3) The invention does not need to add a large amount of inorganic conditioning agent to change the pH value in the system, the position of the sludge can be changed through the rotation action in the system, the hydrogen ions and the hydroxyl ions are subjected to neutralization reaction, and the pH value is maintained near neutrality;
(4) The invention adds a small amount of double oxidant, which can make up the defects that the reaction of calcium peroxide, sodium peroxide and hydrogen peroxide in the sludge is too slow and the adaptive pH value range is small, improve the phenomenon that the persulfate reaction is too strong to damage the device, and generate sulfate radical and hydroxyl radical, which can widen the range of degrading organic matters;
(5) According to the invention, a constant-voltage and constant-current power supply capable of automatically inverting the pole is used, the anode cylinder and the cathode rotating rod are made of nonmetal-metal composite conductive materials, the water content of the dehydrated mud cake is relatively uniform, and the corrosion degree of the anode cylinder is greatly reduced;
(6) The invention installs the speed-adjustable electric driving device (motor reducer) on the cathode rotating rod, the speed-adjustable electric driving device drives the cathode rotating rod to rotate and controls the rotating speed, the stirring blade is arranged on the cathode rotating rod, the sludge can be stirred in the electro-osmotic dehydration process, and the dehydration efficiency is improved;
(7) According to the invention, the drawer type water storage and mud storage bin is used for storing water and mud cakes, the water is stored at the bottom of the drawer type water storage and mud storage bin through the supporting net, the mud cakes fall on the supporting net, and the drawer type water storage and mud storage is of a drawing type structure, so that the water and mud cakes can be conveniently detached and poured out;
(8) The spray type medicine spraying device is arranged at the top of the electroosmosis reactor, the spray type medicine spraying device comprises two injectors, medicines can be sequentially applied in time intervals, the outer circle of each injector is sealed with the inner wall of the connecting pipe, when the injectors inject medicine liquid into the medicine storage box, the injector has certain pressure, the medicine liquid is sprayed out through medicine spraying micropores at the bottom of the medicine storage box, and the medicine liquid is uniformly sprayed on sludge and can be fully mixed through stirring of the cathode rotating rod.
(9) The invention arranges the mud inlet and outlet at the bottom of the electroosmosis reactor, reduces the area of the mud inlet and outlet as much as possible, thus increasing the surface area of the anode cylinder as much as possible, improving the dehydration efficiency and effect, and being convenient and quick in mud loading and mud cake taking out processes by operating the detachable hinge.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a side view of a cathode rotating rod;
FIG. 4 is a top view of the outer and inner cover plates of FIG. 1;
fig. 5 is an enlarged view of the cartridge of fig. 1.
Detailed Description
As shown in figures 1-5, the oxidative degradation organic matter rotary type electroosmosis sludge dewatering system comprises an automatic reverse pole type constant voltage constant current power supply, an adjustable speed electric driving device, a bottom frame 1 and a cylindrical electroosmosis reactor 2, wherein a bedplate 3 is arranged on the bottom frame 1, four diagonal braces 4 are arranged on the bedplate 3, the lower ends of the four diagonal braces 4 are hinged on the bedplate 3 through a detachable hinge 5, the four detachable hinges 5 are positioned on four vertexes of a rectangle, the central line of the electroosmosis reactor 2 is horizontally arranged along the left and right directions, the upper ends of the two diagonal braces 4 on the left side are fixedly connected on the left end face of the electroosmosis reactor 2, the upper ends of the two diagonal braces 4 on the right side are fixedly connected on the right end face of the electroosmosis reactor 2, a cathode rotary rod 6 is rotatably connected with the same central line in the electroosmosis reactor 2, the power output end of the speed-adjustable electric driving device is in transmission connection with one end of a cathode rotating rod 6, an anode cylinder 7 is arranged in the electroosmosis reactor 2 at the same center line, an automatic inverted-pole constant-voltage constant-current power supply is respectively connected with the cathode rotating rod 6 and the anode cylinder 7 through wires, medicine injection installation long holes are formed in the tops of the electroosmosis reactor 2 and the anode cylinder 7, a spray type medicine spraying device is arranged in the medicine injection installation long holes, a mud inlet and outlet is formed in the bottom of the electroosmosis reactor 2, an outer cover plate 8 is arranged at the mud inlet and outlet, an inner cover plate 9 with an area smaller than that of the outer cover plate 8 is arranged on the inner side surface of the outer cover plate 8, the outer cover plate 8 and the inner cover plate 9 are of arc structures, the arc structures are overlapped with the center line of the electroosmosis reactor 2, a filter cloth 10 is arranged between the inner cover plate 9 and the outer cover plate 8, water permeable holes are formed in parts of the outer cover plate 8 and the inner cover plate 9 corresponding to the filter cloth 10, the bottom of the anode cylinder 7 is provided with a through hole corresponding to the inner cover plate 9, the inner cover plate 9 is positioned in the through hole, and the inner cover is flush with the inner surface of the bottom of the anode cylinder 7. The automatic reverse pole type constant voltage and constant current power supply and the speed-adjustable electric driving device are both of the prior art, and are not shown in the drawings, and specific structures are not repeated.
The platen 3 is provided with a blanking port positioned below the electroosmosis reactor 2, the lower surface of the platen 3 is provided with a drawer type water and mud storage bin 11 positioned below the blanking port, and the middle part in the drawer type water and mud storage bin 11 is horizontally provided with a supporting net.
The spray type medicine spraying device comprises a cuboid-shaped medicine storage box 12, the lower part of the medicine storage box 12 is fixedly arranged in a medicine injection installation slot hole, the upper part of the medicine storage box 12 is fixed at the top of an electroosmosis reactor 2 through a U-shaped buckle 24, a first sealing strip is arranged between the periphery of the medicine storage box 12 and the peripheral side wall of the medicine injection installation slot hole, the lower surface of the medicine storage box 12 is flush with the inner side surface of the top of an anode cylinder 7, a plurality of medicine spraying micropores 13 are uniformly formed in the bottom of the medicine storage box 12, a connecting pipe 14 with an open top is respectively arranged on the left side and the right side of the top of the medicine storage box 12, and a first injector 15 and a second injector 16 are respectively correspondingly arranged in the connecting pipes 14 on the left side and the right side.
The right side of the top of the electroosmosis reactor 2 is provided with a through hole 17, and the lead wire passes through the through hole 17 to be connected with the anode cylinder 7.
The left end and the right-hand member of negative pole rotary rod 6 all rotate through the bearing and connect at the left end face and the right-hand member face of electro-osmotic reactor 2, are provided with a plurality of stirring blade 18 that all are located the inside of positive pole barrel 7 on the negative pole rotary rod 6, and the electro-osmotic reactor 2 is stretched out to negative pole rotary rod 6 right-hand member, and the right-hand member of negative pole rotary rod 6 is connected with adjustable speed electric drive's power take off end, is provided with the electrically conductive sliding ring 19 of being connected with the wire on the negative pole rotary rod 6.
The rear side of the outer cover plate 8 is hinged with the electroosmosis reactor 2 through a hinge 20, the front side of the outer cover plate 8 is connected with the electroosmosis reactor 2 through a hasp 21, a second sealing strip 22 which is in pressure welding sealing with the outer surface of the anode cylinder 7 is arranged around the inner cover plate 9 on the inner side surface of the outer cover plate 8, and the edge of the inner cover plate 9 is connected with the inner side surface of the outer cover plate 8 through a hasp 23.
The automatic inverted electrode type constant voltage and constant current power supply is in the prior art, and specific structures and principles are not repeated.
The dewatering method of the rotary electroosmosis sludge dewatering system for oxidative degradation of organic matters comprises the following steps,
(1) Charging sludge into an electroosmosis reactor 2;
(2) Preparing a medicament, and placing the prepared medicament into a spray type medicament spraying device;
(3) Starting an adjustable-speed electric driving device to drive the cathode rotating rod 6 to mix sludge and medicament;
(4) Starting an automatic reverse electrode type constant voltage and constant current power supply, and dehydrating by using an electroosmosis double oxidation technology;
(5) And collecting mud cakes.
The specific process of the step (1) is that two detachable hinges 5 on the front side are opened, the electroosmosis reactor 2 is turned upwards and backwards by taking the two detachable hinges 5 on the rear side as fulcrums, a hasp 21 connected between an outer cover plate 8 and the electroosmosis reactor 2 is opened, the outer cover plate 8 and an inner cover plate 9 are opened, quantitative sludge is put into the anode cylinder 7 through a sludge inlet and outlet, then the outer cover plate 8 is closed, the hasp 21 is locked, and then the two detachable hinges 5 on the front side are connected to a bedplate 3 to enable the electroosmosis reactor 2 to be stably placed;
the specific process of the step (2) is that corresponding concentration agents are prepared according to the proportion of the selected oxidant to the sludge, wherein the selected agents are sodium peroxide, hydrogen peroxide, calcium peroxide, ammonium persulfate, sodium persulfate or potassium persulfate; one of sodium peroxide, hydrogen peroxide and calcium peroxide is pumped into a first injector 15, one of ammonium persulfate, sodium persulfate and potassium persulfate is pumped into a second injector 16, the first injector 15 extends into a left connecting pipe 14, the liquid medicine is injected into a medicine storage box 12, then the second injector 16 extends into a right connecting pipe 14, the liquid medicine is injected into the medicine storage box 12, the liquid medicine enters into an anode cylinder 7 from a medicine spraying micropore 13 at the bottom of the medicine storage box 12, and the two connecting pipes 14 are blocked.
The specific process of the step (3) is that an adjustable-speed electric driving device is started, the adjustable-speed electric driving device drives a cathode rotating rod 6 to rotate, and a stirring blade 18 on the cathode rotating rod 6 rotates to stir and mix the spraying agent and the sludge;
the specific process of the step (4) is that after the mixing is uniform, the power supply inverting time is set, an automatic inverting constant voltage constant current power supply is turned on, the cathode rotating rod 6 and the anode cylinder 7 are electrified, meanwhile, the cathode rotating rod 6 drives the stirring blade 18 to rotate at a constant speed to continuously stir the sludge, finally, the water is removed under the action of double oxidation agents and electroosmosis, the removed water flows downwards through the water permeable holes on the inner cover plate 9, the filter cloth 10 and the water permeable holes on the outer cover plate 8, and the discharged water is collected in the drawer type water storage mud bin 11;
the specific process of the step (5) is to turn off the speed-adjustable electric driving device and the automatic reverse pole type constant voltage and constant current power supply,
the two detachable hinges 5 on the front side are opened, the electroosmosis reactor 2 is turned backwards upwards by taking the two detachable hinges 5 on the rear side as fulcrums, the hasp 21 connected between the outer cover plate 8 and the electroosmosis reactor 2 is opened, the outer cover plate 8 and the inner cover plate 9 are opened, then the electroosmosis reactor 2 is turned over again, mud cakes fall into the drawer type water storage mud storage bin 11 through the mud inlet and outlet, then the outer cover plate 8 is closed, the hasp 21 is locked, and then the two detachable hinges 5 on the front side are connected to the bedplate 3 to enable the electroosmosis reactor 2 to be placed stably.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.
Claims (5)
1. The rotary electroosmosis sludge dewatering system for oxidizing and degrading organic matters is characterized in that: comprises an automatic reverse pole type constant voltage constant current power supply, an adjustable speed electric driving device, a bottom frame and a cylindrical electroosmosis reactor, wherein a bedplate is arranged on the bottom frame, four inclined supporting rods are arranged on the bedplate, the lower ends of the four inclined supporting rods are hinged on the bedplate through a detachable hinge, the four detachable hinges are positioned on four vertexes of a rectangle, the central line of the electroosmosis reactor is horizontally arranged along the left-right direction, the upper ends of the two inclined supporting rods on the left side are fixedly connected on the left end surface of the electroosmosis reactor, the upper ends of the two inclined supporting rods on the right side are fixedly connected on the right end surface of the electroosmosis reactor, the power output end of the adjustable speed electric driving device is in transmission connection with one end of the cathode rotating rod in the same central line, the anode cylinder body is arranged in the same central line in the electroosmosis reactor, the automatic reverse electrode type constant voltage constant current power supply is respectively connected with a cathode rotating rod and an anode cylinder body through wires, medicine injection installation long holes are formed in the tops of the electroosmosis reactor and the anode cylinder body, a spray type medicine spraying device is arranged in each medicine injection installation long hole, a mud inlet and outlet is formed in the bottom of the electroosmosis reactor, an outer cover plate is arranged at the mud inlet and outlet, an inner cover plate with the area smaller than that of the outer cover plate is arranged on the inner side surface of the outer cover plate, the outer cover plate and the inner cover plate are of arc structures, the arc structures coincide with the central line of the electroosmosis reactor, filter cloth is arranged between the inner cover plate and the outer cover plate, water permeable holes are formed in parts of the outer cover plate and the inner cover plate corresponding to the filter cloth, through holes corresponding to the inner cover plate are formed in the bottom of the anode cylinder body, and the inner cover plate is positioned in the through holes;
a blanking port positioned below the electroosmosis reactor is formed in the bedplate, a drawer type water and mud storage bin positioned below the blanking port is arranged on the lower surface of the bedplate, and a supporting net is horizontally arranged in the middle of the drawer type water and mud storage bin;
the spray type medicine spraying device comprises a cuboid medicine storage box, the lower part of the medicine storage box is fixedly arranged in a medicine injection installation long hole, the upper part of the medicine storage box is fixed at the top of the electroosmosis reactor through a U-shaped buckle, a first sealing strip is arranged between the periphery of the medicine storage box and the side wall of the periphery of the medicine injection installation long hole, the lower surface of the medicine storage box is flush with the inner side surface of the top of the anode cylinder, a plurality of medicine spraying micropores are uniformly formed in the bottom of the medicine storage box, a connecting pipe with an open top is respectively arranged on the left side and the right side of the top of the medicine storage box, and a first injector and a second injector are respectively correspondingly arranged in the connecting pipes on the left side and the right side;
the right side of the top of the electroosmosis reactor is provided with a perforation, and the lead passes through the perforation to be connected with the anode cylinder;
the left end and the right end of the cathode rotating rod are respectively connected to the left end face and the right end face of the electroosmosis reactor through bearings in a rotating way, a plurality of stirring blades which are respectively positioned in the anode cylinder are arranged on the cathode rotating rod, the right end of the cathode rotating rod extends out of the electroosmosis reactor, the right end of the cathode rotating rod is connected with the power output end of the speed-adjustable electric driving device, and a conductive slip ring connected with a lead is arranged on the cathode rotating rod;
the rear side of the outer cover plate is hinged with the electroosmosis reactor through a hinge, the front side of the outer cover plate is connected with the electroosmosis reactor through a hasp, a second sealing strip which is in pressure connection and sealing with the outer surface of the anode cylinder body is arranged on the periphery of the inner cover plate on the inner side surface of the outer cover plate, and the edge of the inner cover plate is connected with the inner side surface of the outer cover plate through a hasp.
2. The dehydration method of the rotary electroosmosis sludge dehydration system for oxidative degradation of organic matters according to claim 1, which is characterized in that: comprises the steps of,
(1) Filling sludge into an electroosmosis reactor;
(2) Preparing a medicament, and placing the prepared medicament into a spray type medicament spraying device;
(3) Starting an adjustable-speed electric driving device to drive a cathode rotating rod to mix sludge and medicament;
(4) Starting an automatic reverse electrode type constant voltage and constant current power supply, and dehydrating by using an electroosmosis double oxidation technology;
(5) And collecting mud cakes.
3. The dehydration method of the oxidative degradation organic matter rotary electroosmosis sludge dehydration system according to claim 2, characterized by comprising the following steps: the concrete process of the step (1) is that two detachable hinges on the front side are opened, the electroosmosis reactor is turned over upwards and backwards by taking the two detachable hinges on the rear side as fulcrums, the buckles connected between the outer cover plate and the electroosmosis reactor are opened, the outer cover plate and the inner cover plate are opened, quantitative sludge is put into the anode cylinder body through the sludge inlet and outlet, then the outer cover plate is closed, the buckles are locked, and the two detachable hinges on the front side are connected to the bedplate to enable the electroosmosis reactor to be stably placed.
4. The method for dehydrating an oxidative degradation organic matter rotary electroosmosis sludge dehydration system as claimed in claim 3, wherein the method comprises the steps of: the specific process of the step (2) is that corresponding concentration agents are prepared according to the proportion of the selected oxidant to the sludge, wherein the selected agents are sodium peroxide, hydrogen peroxide, calcium peroxide, ammonium persulfate, sodium persulfate or potassium persulfate; one of sodium peroxide, hydrogen peroxide and calcium peroxide is pumped into a first injector, one of ammonium persulfate, sodium persulfate and potassium persulfate is pumped into a second injector, the first injector stretches into a left connecting pipe, liquid medicine is injected into a medicine storage box, then the second injector stretches into a right connecting pipe, the liquid medicine is injected into the medicine storage box, the liquid medicine enters into an anode cylinder through a medicine spraying micropore at the bottom of the medicine storage box, and the two connecting pipes are blocked.
5. The method for dehydrating an oxidative degradation organic matter rotary electroosmosis sludge dehydration system as claimed in claim 4, wherein the method comprises the following steps: the specific process of the step (3) is that an adjustable-speed electric driving device is started, the adjustable-speed electric driving device drives a cathode rotating rod to rotate, and a stirring blade on the cathode rotating rod rotates to stir and mix the spraying agent and the sludge;
setting the power source inverting time after uniformly mixing, turning on an automatic inverting constant voltage constant current power source, electrifying a cathode rotating rod and an anode cylinder, simultaneously driving a stirring blade to rotate at a constant speed by the cathode rotating rod to continuously stir sludge, finally removing water under the action of double oxidation agents and electroosmosis, and collecting the discharged water in a drawer type water storage and mud storage bin through water permeable holes on an inner cover plate, filter cloth and water permeable holes on an outer cover plate;
the specific process of the step (5) is to turn off the speed-adjustable electric driving device and the automatic reverse pole type constant voltage and constant current power supply,
the two detachable hinges on the front side are opened, the electroosmosis reactor is turned upwards and backwards by taking the two detachable hinges on the rear side as fulcrums, the hasp connected between the outer cover plate and the electroosmosis reactor is opened, the outer cover plate and the inner cover plate are opened, then the electroosmosis reactor is turned over again, mud cakes fall into the drawer type water storage mud bin through the mud inlet and outlet, then the outer cover plate is closed, the hasp is locked, and then the two detachable hinges on the front side are connected to the bedplate to enable the electroosmosis reactor to be stably placed.
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| CN104958956A (en) * | 2015-07-02 | 2015-10-07 | 天津霍普环保科技有限公司 | Cleaning device for filter belt of sludge electroosmosis dewatering machine |
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| CN104958956A (en) * | 2015-07-02 | 2015-10-07 | 天津霍普环保科技有限公司 | Cleaning device for filter belt of sludge electroosmosis dewatering machine |
| JP5913698B1 (en) * | 2015-07-23 | 2016-04-27 | 巴工業株式会社 | Electroosmotic rotary pressure dehydrator |
| CN106904803A (en) * | 2017-03-24 | 2017-06-30 | 河南工程学院 | Transfer electron formula electro-osmosis advanced oxidation sludge dewatering system and its dewatering |
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