CN109160700B - Device and method for breaking wall and removing sand of excess sludge - Google Patents
Device and method for breaking wall and removing sand of excess sludge Download PDFInfo
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- CN109160700B CN109160700B CN201811121065.6A CN201811121065A CN109160700B CN 109160700 B CN109160700 B CN 109160700B CN 201811121065 A CN201811121065 A CN 201811121065A CN 109160700 B CN109160700 B CN 109160700B
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- 239000004576 sand Substances 0.000 title claims abstract description 174
- 239000010802 sludge Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims description 18
- 238000011282 treatment Methods 0.000 claims abstract description 18
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 230000005684 electric field Effects 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 19
- 244000005700 microbiome Species 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 9
- 210000000170 cell membrane Anatomy 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000001154 acute effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 230000000415 inactivating effect Effects 0.000 claims description 3
- 230000000593 degrading effect Effects 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 230000009471 action Effects 0.000 description 4
- 210000002421 cell wall Anatomy 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000010525 oxidative degradation reaction Methods 0.000 description 4
- 230000001590 oxidative effect Effects 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000001818 nuclear effect Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000030833 cell death Effects 0.000 description 1
- 239000012295 chemical reaction liquid Substances 0.000 description 1
- 238000003487 electrochemical reaction Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
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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
-
- 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
- C02F11/004—Sludge detoxification
-
- 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
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
- C02F11/08—Wet air oxidation
Abstract
The invention discloses a device for breaking wall and removing sand of excess sludge, which comprises a circulating pump, a high-potential wall breaking component, a rotational flow sand removing component and an ultrasonic wave transmitting device, wherein the circulating pump is connected with the high-potential wall breaking component; the high-potential wall breaking component comprises at least one group of high-potential wall breaking tubes, and the two ends of each high-potential wall breaking tube are respectively provided with an electrode A and an electrode B; the cyclone sand removal assembly comprises at least one cyclone sand remover, and the ultrasonic wave transmitting device is arranged at the top end of the cyclone sand remover; the outlet pipeline of the circulating pump is communicated with the inlet of the high-potential broken wall pipe in a matched mode, the outlet of the high-potential broken wall pipe is communicated with the feed inlet of the cyclone sand remover in a matched mode through a pipeline, and the discharge outlet of the cyclone sand remover is communicated with the inlet pipeline of the circulating pump in a matched mode; the inlet pipeline of the circulating pump is provided with a system feeding pipe orifice and a system discharging pipe orifice. The high-potential wall breaking component can be subjected to wall breaking treatment by a high-voltage electric field, and can be subjected to sand removal and ultrasonic wall breaking treatment, so that the wall breaking efficiency is effectively improved, the energy consumption is low, and the resource utilization of the residual sludge is facilitated.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, in particular to a device and a method for breaking wall and removing sand of excess sludge.
Background
The cyclone sand remover integrates cyclone and filtration, is mainly used for removing underground water and solid particles in underground hot water and other water sources, and has remarkable effects of removing sand, reducing turbidity, separating solid from liquid and the like in the field of water supply treatment. According to the principle of centrifugal sedimentation and density difference, when water flow enters the equipment from the inlet of the sand remover in a tangential direction under a certain pressure, strong rotary motion can be generated, and due to different sand water densities, clear water with low density is raised under the actions of centrifugal force, centripetal buoyancy and fluid drag force and is discharged from an overflow port, and sand with high density is settled to the bottom and is discharged from a sand discharge port, so that the purpose of sand removal is achieved. Under a certain range and condition, the larger the water inlet pressure of the sand remover is, the higher the sand removal rate is, and a plurality of sand removers can be used in parallel.
The principle of the cyclone sand remover is as follows: the rotational flow sand remover utilizes the centrifugal separation principle to remove sand, because the water inlet pipe is arranged at the eccentric position of the cylinder, when water passes through the water inlet pipe of the rotational flow sand remover, firstly, oblique downward surrounding fluid is formed along the circumferential tangential direction of the cylinder, the water flow rotationally and downwards pushes, when the water flow reaches a certain part of the cone, the water flow rotates upwards along the axis of the cylinder, finally, the water flow is discharged through the water outlet pipe, and the impurity falls into the conical slag hopper at the lower part of the equipment along the wall surface of the cone under the action of the inertial centrifugal force of the fluid and the self gravity, the lower part of the cone is provided with a component for preventing the impurity from rising upwards, and when the impurity accumulated in the slag hopper reaches a certain degree, the impurity can flow out of the rotational flow sand remover under the action of the water flow by opening the manual butterfly valve.
Wherein, the main function of the cyclone sand remover is sand removal; since the fluids such as sewage, sludge and the like also contain a plurality of harmful microorganisms, the clear liquid can be separated through the desanding of the cyclone desanding device, but a plurality of harmful microorganisms can be mixed in the clear liquid, so that the filtered clear liquid can not be directly recycled; in order to reuse the clear liquid, the treatment such as sterilization is often needed, so that the process is complicated, the utilization rate is low, time and labor are wasted, and the cost is increased.
Disclosure of Invention
First, the technical problem to be solved
The invention aims to solve the technical problem of providing a recycling device for carrying out sand removal and wall breaking treatment on excess sludge, and a method for breaking the wall and removing the sand of the residual sludge by using the device.
(II) technical scheme
In order to solve the technical problems, the invention provides a device for breaking the wall and removing the sand of excess sludge, which comprises a circulating pump, a high-potential wall breaking component, a rotational flow sand removing component and an ultrasonic wave transmitting device; the high-potential wall breaking component comprises at least one group of high-potential wall breaking pipes, two ends of each high-potential wall breaking pipe are respectively provided with an electrode A and an electrode B, a high-potential wall breaking inlet penetrating the high-potential wall breaking pipe is arranged near the electrode A, and a high-potential wall breaking outlet penetrating the high-potential wall breaking pipe is arranged near the electrode B; the cyclone sand removal assembly comprises at least one cyclone sand remover, and the ultrasonic wave transmitting device is arranged at the top end of the cyclone sand remover;
the circulating pump outlet pipeline of the circulating pump is communicated with the high-potential broken wall inlet of the high-potential broken wall pipe in a matched mode, the high-potential broken wall outlet of the high-potential broken wall pipe is communicated with the feeding port of the cyclone sand remover in a matched mode through a pipeline, and the discharging port of the cyclone sand remover is communicated with the circulating pump inlet pipeline of the circulating pump in a matched mode; a system feeding pipe orifice is arranged on the inlet pipeline of the circulating pump close to the circulating pump, and a system discharging pipe orifice is arranged on the inlet pipeline of the circulating pump close to the discharging port of the cyclone sand remover; the bottom of the cyclone sand remover is provided with a slag outlet of the cyclone sand remover.
The system feeding pipe orifice is connected into the inlet pipeline of the circulating pump in an acute angle mode; the opening of the discharging pipe orifice of the system is horizontally upwards and forms an acute angle with the internal flow direction of the inlet pipeline of the circulating pump.
The high-potential wall breaking component comprises at least two groups of high-potential wall breaking pipes which are connected in parallel or in series.
The high-potential wall breaking component comprises three groups of high-potential wall breaking pipes which are connected in series; the circulating pump outlet pipeline of the circulating pump is communicated with the high-potential wall breaking inlets of the first group of high-potential wall breaking pipes in a matching way, the high-potential wall breaking outlets of the first group of high-potential wall breaking pipes are communicated with the high-potential wall breaking outlets of the second group of high-potential wall breaking pipes in a matching way, the high-potential wall breaking inlets of the second group of high-potential wall breaking pipes are communicated with the high-potential wall breaking inlets of the third group of high-potential wall breaking pipes in a matching way, and the high-potential wall breaking outlets of the third group of high-potential wall breaking pipes are communicated with the feeding inlet of the cyclone remover in a matching way.
The cyclone sand removal assembly comprises at least two cyclone sand removers which are connected in parallel; the high-potential wall breaking outlet of the high-potential wall breaking pipe is respectively communicated with the feeding inlet of the cyclone sand remover of each cyclone sand remover in a matching way through a pipeline; the discharge port of the cyclone sand remover of each cyclone sand remover is communicated with the inlet pipeline of the circulating pump in a matching way.
The cyclone sand removal assembly comprises at least two cyclone sand removers which are connected in series; the high-potential wall breaking outlet of the high-potential wall breaking pipe is communicated with the cyclone sand remover feeding hole of the first cyclone sand remover in a matched manner through a pipeline, the cyclone sand remover discharging hole of the first cyclone sand remover is communicated with the cyclone sand remover feeding hole of the next cyclone sand remover in a matched manner and is sequentially connected with all the cyclone sand removers in series, and the cyclone sand remover discharging hole of the last cyclone sand remover is communicated with the circulating pump inlet pipeline of the circulating pump in a matched manner.
The voltage between the electrode A and the electrode B of the high-potential broken wall tube is higher than the safety voltage.
The electrodes A and B of the high-potential broken wall tube can be switched to positive and negative electrodes at regular time.
Wherein, circulating pump outlet pipeline and pipeline both are provided with the earthing pole.
The method for breaking the wall and removing the sand of the surplus sludge by utilizing the device for breaking the wall and removing the sand of the surplus sludge comprises the following steps of:
a. the sludge enters from a feeding pipe orifice of the system, and is sucked into the circulating pump from an inlet pipeline of the circulating pump and is input into a high-potential wall breaking pipe of the first high-potential wall breaking component through an outlet pipeline of the circulating pump under the working of the circulating pump;
b. the sludge flows between the electrode A and the electrode B in each high-potential broken wall pipe, and the high-voltage electric field between the electrode A and the electrode B in each high-potential broken wall pipe is utilized to destroy, inactivate, oxidize and degrade the cell membrane of microorganisms in the sludge;
c. after wall breaking treatment is carried out on the sludge in the high-potential wall breaking component, the sludge is conveyed to a feed inlet of a cyclone sand remover of the cyclone sand remover from a last high-potential wall breaking pipe through a pipeline and enters the cyclone sand remover; the sludge is subjected to a desanding process in the cyclone desanding device, and microorganisms in the sludge are subjected to ultrasonic wall breaking treatment through an ultrasonic transmitting device in the process;
d. after the sludge is subjected to desanding and ultrasonic wall breaking treatment in the cyclone desander, some sludge is discharged through a slag outlet of the cyclone desander, and other purified clear liquid enters an inlet pipeline of the circulating pump through a discharge outlet of the cyclone desander;
e. and a part of clear liquid entering an inlet pipeline of the circulating pump is discharged through a discharge pipe orifice of the system, and a part of clear liquid is mixed with sludge entering from a feed pipe orifice of the system through the inlet pipeline of the circulating pump and is sucked into the circulating pump again to start a new round of wall breaking and sand removal.
(III) beneficial effects
According to the invention, the high-potential wall breaking device is added on the basis of the cyclone sand remover, and in the process of removing the sand from the residual sludge, the wall breaking treatment can be performed to kill microorganisms, so that the separated clear liquid can be reused under the harmless condition.
The working mechanism of the high-potential wall breaking device comprises two parts, namely cell membrane destruction, inactivation and oxidative degradation; the reason why the high voltage electric field causes cell death is that the semipermeable channels on the cell membrane are irreversibly denatured, resulting in loss of membrane function. The high-voltage pulse electric field causes the cell membrane to generate a transmembrane voltage, and the transmembrane voltage damages the cell membrane of the microorganism; the electrochemical oxidation mainly refers to an electrochemical anode process, and strong oxidizing substances such as hydroxyl radicals generated by the anodic oxidation can destroy cell membranes of bacteria in the sludge.
The ultrasonic wave transmitting device is arranged on the cyclone sand remover and has the function of causing cavitation bubbles to collapse after ultrasonic wave acts on liquid, and local high-temperature and high-pressure environment is generated, so that the cell walls of microorganisms can be damaged; the high pressure released by collapse of cavitation bubbles will be opposite the liquid phase generates strong shock waves and jet streams, thereby generating huge shearing force and destroying the microbial cell wall; when cavitation bubbles collapse, due to the high temperature and high pressure conditions, water molecules entering the cavitation bubbles are easy to break, and oxidative substances such as OH and H free radicals are generated, so that the microbial cell walls can be oxidatively degraded.
In addition, the high-potential wall breaking device and the ultrasonic wave transmitting device can cooperate to enhance cavitation nuclear effect, inactivate favorable wall breaking, double oxidative degradation and the like;
enhancing cavitation nuclear effects: h formed via electrochemical reaction 2 、O 2 Small bubbles are formed in the residual sludge liquid, and a large amount of sufficient micro-gas nuclei are provided for ultrasound in the reaction liquid, so that the ultrasonic cavitation jet effect is enhanced;
inactivating with breaking the wall: bacteria in the surplus sludge lose activity, cell wall perforation and the like under the action of a high-voltage electric field, so that the reaction time and the energy threshold value for realizing wall breaking in an ultrasonic field are reduced;
double oxidative degradation: in the electrocatalytic system, nascent oxygen [ O ] generated by anode reaction and nascent hydrogen generated by cathode reaction cooperate with OH and H free radicals generated under high temperature and high pressure conditions when cavitation bubbles in an ultrasonic field collapse to strengthen oxidative degradation of residual sludge, thereby improving efficiency.
Compared with the prior art, the invention has the advantages of short residence time, low energy consumption and thorough wall breaking through high-potential and ultrasonic synergistic wall breaking, realizes the desanding and inorganic matter proportion reduction in the device synchronously, and provides pretreatment preparation for realizing recycling of residual sludge.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for breaking wall and removing sand from excess sludge according to the present invention.
Reference numerals illustrate: 11. a circulation pump; 12. an inlet pipeline of the circulating pump; 13. a circulation pump outlet pipeline; 14. a system feed pipe orifice; 15. a system discharging pipe orifice; 21. a high potential wall breaking assembly; 22. a high potential wall breaking tube; 23. an electrode A; 24. an electrode B; 25. high potential wall breaking inlet; 26. a high potential wall breaking outlet; 27. a ground electrode; 31. a cyclone desanding assembly; 32. a cyclone desander; 33. a feed inlet of the cyclone sand remover; 34. a slag outlet of the cyclone sand remover; 35. a discharge hole of the cyclone sand remover; 41. an ultrasonic wave emitting device; 51. and (5) a pipeline.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention but are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural diagram of a device for breaking wall and removing sand from excess sludge, which is composed of a circulating pump 11, a high-potential wall breaking assembly 21, a cyclone sand removing assembly 31 and an ultrasonic wave transmitting device 41, and connection relation between the circulating pump 11, the high-potential wall breaking assembly 21, the cyclone sand removing assembly 31 and the ultrasonic wave transmitting device.
The structure of the device and the method for breaking the wall and removing the sand of the excess sludge is shown in figure 1, and the device for breaking the wall and removing the sand of the excess sludge comprises a circulating pump 11, a high-potential wall breaking component 21, a rotational flow sand removing component 31 and an ultrasonic wave transmitting device 41; the high-potential wall breaking assembly 21 comprises at least one group of high-potential wall breaking pipes 22, two ends of each high-potential wall breaking pipe 22 are respectively provided with an electrode A23 and an electrode B24, a high-potential wall breaking inlet 25 penetrating through the high-potential wall breaking pipe 22 is arranged near the electrode A23, and a high-potential wall breaking outlet 26 penetrating through the high-potential wall breaking pipe 22 is arranged near the electrode B24; the cyclone sand removal assembly 31 comprises at least one cyclone sand remover 32, and an ultrasonic wave transmitting device 41 is arranged at the top end of the cyclone sand remover 32;
the circulating pump outlet pipeline 13 of the circulating pump 11 is communicated with the high-potential broken wall inlet 25 of the high-potential broken wall pipe 22 in a matched mode, the high-potential broken wall outlet 26 of the high-potential broken wall pipe 22 is communicated with the cyclone sand remover inlet 33 of the cyclone sand remover 32 in a matched mode through a pipeline 51, and the cyclone sand remover outlet 35 of the cyclone sand remover 32 is communicated with the circulating pump inlet pipeline 12 of the circulating pump 11 in a matched mode; a system feed pipe orifice 14 is arranged on the circulating pump inlet pipeline 12 near the circulating pump 11, and a system discharge pipe orifice 15 is arranged on the circulating pump inlet pipeline 12 near the discharge port 35 of the cyclone sand remover; the bottom end of the cyclone sand remover 32 is provided with a slag outlet 34 of the cyclone sand remover. Wherein the high potential broken wall tube 22 is made of insulating material; or the inner wall of the high potential broken wall tube 22 is treated by insulation; or the high-potential broken wall tube 22 is made of insulating material and the inner wall thereof is insulated; after the insulation treatment is adopted, the high-potential broken wall pipe 22 is ensured not to leak electricity and escape electricity, and the safety is ensured.
According to the invention, the high-potential wall breaking component is added on the basis of the cyclone sand remover, and the high-voltage electric field can be utilized to break the wall to kill microorganisms while the residual sludge is desanding, and the ultrasonic wave is utilized to further improve the wall breaking effect, so that the energy consumption is low, and the separated clear liquid can be reused under the harmless condition, so that the method is economical and practical.
As shown in fig. 1, in this embodiment, the system feed nozzle 14 is connected to the circulation pump inlet line 12 at an acute angle; wherein, the inlet pipeline 12 of the circulating pump provided with the feeding pipe orifice 14 of the system is vertically paved, which is beneficial to the smooth flow of the residual sludge when the residual sludge is connected into the inlet pipeline 12 of the circulating pump. The opening of the system discharge pipe orifice 15 is horizontally upwards and forms an acute angle with the internal flow direction of the circulating pump inlet pipeline 12; the inlet pipeline 12 of the circulating pump provided with the system discharge pipe orifice 15 is horizontally paved, so that the upper half part of the clear liquid flowing in the inlet pipeline 12 of the circulating pump can smoothly flow out of the system discharge pipe orifice 15, and the quality of the liquid outlet is ensured.
In this embodiment, the high potential wall breaking assembly 21 comprises at least two sets of high potential wall breaking tubes 22 connected in parallel or in series, preferably in series. When two or more groups of high-potential broken wall pipes 22 are connected in parallel, the circulating pump outlet pipeline 13 of the circulating pump 11 is respectively communicated with the high-potential broken wall inlets 25 of all the high-potential broken wall pipes 22 in a matched mode, and the high-potential broken wall outlets 26 of all the high-potential broken wall pipes 22 are distributed and communicated with the cyclone sand remover feeding port 33 of the cyclone sand remover 32 in a matched mode through the pipeline 51. When two or more groups of high-potential broken wall pipes 22 are connected in series, a circulating pump outlet pipeline 13 of a circulating pump 11 is communicated with a high-potential broken wall inlet 25 of a first group of high-potential broken wall pipes 22 in a matched manner, two adjacent groups of high-potential broken wall pipes 22 are sequentially connected in series in a mode that a high-potential broken wall outlet 26 is connected with the high-potential broken wall outlet 26 or the high-potential broken wall inlet 25 is connected with the high-potential broken wall inlet 25 through a high-potential broken wall outlet 26, and the rest of the high-potential broken wall inlets 25 or the high-potential broken wall outlets 26 of the last group of high-potential broken wall pipes 22 are distributed and communicated with a cyclone sand remover feed inlet 33 of a cyclone sand remover 32 in a matched manner through a pipeline 51; namely, two groups of adjacent high-potential wall breaking pipes 22 are connected in series by matching and butting the interfaces with the same potential.
As shown in fig. 1, in the present embodiment, the high-potential wall breaking assembly 21 includes three groups of high-potential wall breaking tubes 22 connected in series; the circulation pump outlet pipeline 13 of the circulation pump 11 is communicated with the high-potential wall breaking inlets 25 of the first group of high-potential wall breaking pipes 22 in a matching way, the high-potential wall breaking outlets 26 of the first group of high-potential wall breaking pipes 22 are communicated with the high-potential wall breaking outlets 26 of the second group of high-potential wall breaking pipes 22 in a matching way, the high-potential wall breaking inlets 25 of the second group of high-potential wall breaking pipes 22 are communicated with the high-potential wall breaking inlets 25 of the third group of high-potential wall breaking pipes 22 in a matching way, and the high-potential wall breaking outlets 26 of the third group of high-potential wall breaking pipes 22 are communicated with the feeding port 33 of the cyclone sand remover 32 in a matching way through a pipeline 51. The high-potential wall breaking component 21 of the invention is subjected to three times of high-voltage electric field wall breaking treatments.
In this embodiment, the cyclone sand removal assembly 31 includes at least two cyclone sand removers 32 connected in parallel; the high-potential broken wall outlet 26 of the high-potential broken wall pipe 22 is respectively communicated with the cyclone sand remover feed inlet 33 of each cyclone sand remover 32 in a matching way through a pipeline 51; the cyclone sand remover discharge port 35 of each cyclone sand remover 32 is respectively communicated with the circulating pump inlet pipeline 12 of the circulating pump 11 in a matching way. The parallel structure of the cyclone sand remover can effectively improve the working efficiency of sand removal. Wherein the ultrasonic wave emitting means 41 may be provided at the pipe line 51.
In this embodiment, the cyclone sand removal assembly 31 includes at least two cyclone sand removers 32 connected in series; the high-potential broken wall outlet 26 of the high-potential broken wall pipe 22 is communicated with the cyclone sand separator feed inlet 33 of the first cyclone sand separator 32 in a matching way through a pipeline 51, the cyclone sand separator discharge outlet 35 of the first cyclone sand separator 32 is communicated with the cyclone sand separator feed inlet 33 of the next cyclone sand separator 32 in a matching way and is sequentially connected with all the cyclone sand separators 32 in series, and the cyclone sand separator discharge outlet 35 of the last cyclone sand separator 32 is communicated with the circulating pump inlet pipeline 12 of the circulating pump 11 in a matching way. The cyclone sand remover serial structure can effectively improve the quality of clear liquid separated after sand removal.
In this embodiment, the voltage between the electrode a23 and the electrode B24 of the high potential broken wall tube 22 is higher than the safety voltage.
In this embodiment, the electrodes A23 and B24 of the high-potential broken wall tube 22 can be switched in timing.
As shown in fig. 1, in the present embodiment, both the circulation pump outlet pipe 13 and the pipe 51 of the circulation pump 11 are provided with the grounding electrode 27, ensuring safety performance.
The method for breaking the wall and removing the sand of the surplus sludge by utilizing the device for breaking the wall and removing the sand of the surplus sludge comprises the following steps of:
a. sludge enters from a system feed pipe orifice 14, is sucked into the circulating pump 11 from a circulating pump inlet pipeline 12 and is input into a high-potential wall breaking pipe 22 of a first high-potential wall breaking component 21 through a circulating pump outlet pipeline 13 under the operation of the circulating pump 11;
b. the sludge flows between the electrode A23 and the electrode B24 in each high-potential broken pipe 22, and the high-voltage electric field between the electrode A23 and the electrode B24 in each high-potential broken pipe 22 is used for destroying, inactivating, oxidizing and degrading the cell membrane of microorganisms in the sludge;
c. after the sludge is subjected to wall breaking treatment in the high-potential wall breaking assembly 21, the sludge is conveyed to a cyclone sand remover feed inlet 33 of the cyclone sand remover 32 from the last high-potential wall breaking pipe 22 through a pipeline 51 and enters the cyclone sand remover 32; the sludge is subjected to a sand removal process in the cyclone sand remover 32, and microorganisms in the sludge are subjected to ultrasonic wall breaking treatment through an ultrasonic wave transmitting device 41 in the process;
d. after the sludge is subjected to sand removal and ultrasonic wall breaking treatment in the cyclone sand remover 32, some sludge is discharged through a slag outlet 34 of the cyclone sand remover 32, and other purified clear liquid enters the inlet pipeline 12 of the circulating pump through a discharge outlet 35 of the cyclone sand remover 32;
e. the clear liquid entering the inlet pipeline 12 of the circulating pump is partially discharged through the outlet pipe orifice 15 of the system, and partially mixed with the sludge entering from the inlet pipe orifice 14 of the system through the inlet pipeline 12 of the circulating pump and is sucked into the circulating pump 11 again to start a new round of wall breaking and sand removal.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that it will be apparent to those skilled in the art that modifications and variations can be made without departing from the technical principles of the present invention, and these modifications and variations should also be regarded as the scope of the invention.
Claims (8)
1. Device of broken wall of surplus mud and degritting, its characterized in that: the device for breaking the wall and removing the sand of the excess sludge comprises a circulating pump (11), a high-potential wall breaking component (21), a rotational flow sand removing component (31) and an ultrasonic wave transmitting device (41); the high-potential wall breaking assembly (21) comprises at least one group of high-potential wall breaking pipes (22), two ends of each high-potential wall breaking pipe (22) are respectively provided with an electrode A (23) and an electrode B (24), a high-potential wall breaking inlet (25) penetrating through the high-potential wall breaking pipe (22) is arranged near the electrode A (23), and a high-potential wall breaking outlet (26) penetrating through the high-potential wall breaking pipe (22) is arranged near the electrode B (24); the cyclone sand removal assembly (31) comprises at least one cyclone sand remover (32), and the ultrasonic wave emission device (41) is arranged at the top end of the cyclone sand remover (32);
the circulating pump outlet pipeline (13) of the circulating pump (11) is communicated with the high-potential wall-breaking inlet (25) of the high-potential wall-breaking pipe (22), the high-potential wall-breaking outlet (26) of the high-potential wall-breaking pipe (22) is communicated with the cyclone sand remover feeding port (33) of the cyclone sand remover (32) in a matched mode through a pipeline (51), and the cyclone sand remover discharging port (35) of the cyclone sand remover (32) is communicated with the circulating pump inlet pipeline (12) of the circulating pump (11) in a matched mode; a system feeding pipe orifice (14) is arranged on the circulating pump inlet pipeline (12) close to the circulating pump (11), and a system discharging pipe orifice (15) is arranged on the circulating pump inlet pipeline (12) close to the discharge port (35) of the cyclone sand remover; a slag outlet (34) of the cyclone sand remover is arranged at the bottom end of the cyclone sand remover (32);
the system feed pipe orifice (14) is connected into the circulating pump inlet pipeline (12) in an acute angle mode; the opening of the system discharging pipe orifice (15) is horizontally upwards and forms an acute angle with the internal flow direction of the circulating pump inlet pipeline (12);
the high-potential wall breaking component (21) comprises at least two groups of high-potential wall breaking pipes (22) which are connected in parallel or in series.
2. The device for breaking wall and removing sand from excess sludge according to claim 1, wherein: the high-potential wall breaking component (21) comprises three groups of high-potential wall breaking pipes (22) which are connected in series; the circulating pump outlet pipeline (13) of the circulating pump (11) is communicated with the high-potential wall-breaking inlets (25) of the first group of high-potential wall-breaking pipes (22), the high-potential wall-breaking outlets (26) of the first group of high-potential wall-breaking pipes (22) are communicated with the high-potential wall-breaking outlets (26) of the second group of high-potential wall-breaking pipes (22), the high-potential wall-breaking inlets (25) of the second group of high-potential wall-breaking pipes (22) are communicated with the high-potential wall-breaking inlets (25) of the third group of high-potential wall-breaking pipes (22), and the high-potential wall-breaking outlets (26) of the third group of high-potential wall-breaking pipes (22) are communicated with the feeding inlet (33) of the cyclone sand remover (32) in a matched manner through a pipeline (51).
3. The device for breaking wall and removing sand from excess sludge according to claim 1, wherein: the cyclone sand removal assembly (31) comprises at least two cyclone sand removers (32) which are connected in parallel; the high-potential wall-breaking outlet (26) of the high-potential wall-breaking pipe (22) is respectively communicated with the feed inlet (33) of the cyclone sand remover of each cyclone sand remover (32) in a matching way through a pipeline (51); the discharge port (35) of the cyclone sand remover of each cyclone sand remover (32) is communicated with the circulating pump inlet pipeline (12) of the circulating pump (11) in a matching way.
4. The device for breaking wall and removing sand from excess sludge according to claim 3, wherein: the cyclone sand removal assembly (31) comprises at least two cyclone sand removers (32) which are connected in series; the high-potential broken wall outlet (26) of the high-potential broken wall pipe (22) is communicated with the feeding inlet (33) of the cyclone sand remover of the first cyclone sand remover (32) in a matching way through a pipeline (51), the cyclone sand separator discharge port (35) of the first cyclone sand separator (32) is communicated with the cyclone sand separator feed port (33) of the next cyclone sand separator (32) in a matched mode and is sequentially connected with all the cyclone sand separators (32) in series, and the cyclone sand separator discharge port (35) of the last cyclone sand separator (32) is communicated with the circulating pump inlet pipeline (12) of the circulating pump (11) in a matched mode.
5. The device for breaking wall and removing sand from excess sludge according to any one of claims 1 to 4, wherein: the voltage between the electrode A (23) and the electrode B (24) of the high-potential broken wall tube (22) is higher than the safety voltage.
6. The device for breaking wall and removing sand from excess sludge according to claim 5, wherein: the electrode A (23) and the electrode B (24) of the high-potential broken wall tube (22) can be switched in positive and negative electrodes at fixed time.
7. The device for breaking wall and removing sand from excess sludge according to claim 6, wherein: both the circulation pump outlet pipeline (13) and the pipeline (51) of the circulation pump (11) are provided with a grounding electrode (27).
8. A method for breaking wall and removing sand of excess sludge is characterized by comprising the following steps: the device for breaking wall and removing sand by using the residual sludge according to claim 7, the method for realizing the wall breaking and sand removal of the excess sludge comprises the following steps:
a. the sludge enters from a system feeding pipe orifice (14), is sucked into the circulating pump (11) from a circulating pump inlet pipeline (12) and is input into a high-potential wall breaking pipe (22) of a first high-potential wall breaking component (21) through a circulating pump outlet pipeline (13) under the operation of the circulating pump (11);
b. the sludge flows between an electrode A (23) and an electrode B (24) in each high-potential broken wall pipe (22), and the high-voltage electric field between the electrode A (23) and the electrode B (24) in each high-potential broken wall pipe (22) is used for destroying and inactivating cell membranes and oxidatively degrading microorganisms in the sludge;
c. after the sludge is subjected to wall breaking treatment in the high-potential wall breaking component (21), the sludge is conveyed to a cyclone sand remover feed inlet (33) of the cyclone sand remover (32) from a last high-potential wall breaking pipe (22) through a pipeline (51) and enters the cyclone sand remover (32); the sludge is subjected to a sand removal process in a cyclone sand remover (32), and microorganisms in the sludge are subjected to ultrasonic wall breaking treatment through an ultrasonic transmitting device (41);
d. after the sludge is subjected to sand removal and ultrasonic wall breaking treatment in the cyclone sand remover (32), some sludge is discharged through a slag outlet (34) of the cyclone sand remover (32), and other purified clear liquid enters an inlet pipeline (12) of the circulating pump through a discharge outlet (35) of the cyclone sand remover (32);
e. the clear liquid entering the inlet pipeline (12) of the circulating pump is partially discharged through the outlet pipe orifice (15) of the system, and partially mixed with the sludge entering from the inlet pipe orifice (14) of the system through the inlet pipeline (12) of the circulating pump and is sucked into the circulating pump (11) again to start a new round of wall breaking and sand removing.
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| CN201811121065.6A CN109160700B (en) | 2018-09-26 | 2018-09-26 | Device and method for breaking wall and removing sand of excess sludge |
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| CN201811121065.6A CN109160700B (en) | 2018-09-26 | 2018-09-26 | Device and method for breaking wall and removing sand of excess sludge |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948154A (en) * | 2010-09-10 | 2011-01-19 | 江苏大学 | Acoustoelectric integrated water treatment sterilization and algal removal system |
| CN106145579A (en) * | 2016-08-05 | 2016-11-23 | 华东理工大学 | Alkaline residue and excess sludge coupled rotational flow release carbon method and device |
| CN108046550A (en) * | 2017-11-28 | 2018-05-18 | 四川理工学院 | A kind of excess sludge ultrasound rotational flow, which is combined, cracks technique |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948154A (en) * | 2010-09-10 | 2011-01-19 | 江苏大学 | Acoustoelectric integrated water treatment sterilization and algal removal system |
| CN106145579A (en) * | 2016-08-05 | 2016-11-23 | 华东理工大学 | Alkaline residue and excess sludge coupled rotational flow release carbon method and device |
| CN108046550A (en) * | 2017-11-28 | 2018-05-18 | 四川理工学院 | A kind of excess sludge ultrasound rotational flow, which is combined, cracks technique |
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