CN112979020B - Hydraulic engineering sludge wastewater treatment device and process - Google Patents
Hydraulic engineering sludge wastewater treatment device and process Download PDFInfo
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- CN112979020B CN112979020B CN202110204569.XA CN202110204569A CN112979020B CN 112979020 B CN112979020 B CN 112979020B CN 202110204569 A CN202110204569 A CN 202110204569A CN 112979020 B CN112979020 B CN 112979020B
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- 239000010802 sludge Substances 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 180
- 230000001954 sterilising effect Effects 0.000 claims abstract description 69
- 239000002245 particle Substances 0.000 claims abstract description 60
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 49
- 239000002351 wastewater Substances 0.000 claims abstract description 41
- 238000000926 separation method Methods 0.000 claims abstract description 31
- 230000008014 freezing Effects 0.000 claims abstract description 29
- 238000007710 freezing Methods 0.000 claims abstract description 29
- 238000009825 accumulation Methods 0.000 claims abstract description 9
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract 2
- 238000002156 mixing Methods 0.000 claims description 21
- 230000003197 catalytic effect Effects 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 17
- 239000007787 solid Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 6
- 244000005700 microbiome Species 0.000 claims description 6
- 230000005484 gravity Effects 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 238000000859 sublimation Methods 0.000 claims description 4
- 230000008022 sublimation Effects 0.000 claims description 4
- 239000008213 purified water Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 2
- 239000003054 catalyst Substances 0.000 claims 1
- 239000010865 sewage Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 19
- 230000000694 effects Effects 0.000 description 8
- 239000010935 stainless steel Substances 0.000 description 7
- 229910001220 stainless steel Inorganic materials 0.000 description 7
- 239000013049 sediment Substances 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
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- 229910000838 Al alloy Inorganic materials 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
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- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 230000000415 inactivating effect Effects 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
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- 238000000746 purification Methods 0.000 description 1
- 238000003900 soil pollution Methods 0.000 description 1
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- 231100000331 toxic Toxicity 0.000 description 1
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Images
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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/22—Treatment of water, waste water, or sewage by freezing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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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)
- Physical Water Treatments (AREA)
Abstract
The application relates to a hydraulic engineering sludge wastewater treatment device and a process, which relate to the technical field of sewage treatment, wherein the treatment device comprises a freezing chamber, a sterilization mechanism, a separation mechanism and a water collection mechanism; the freezing chamber is used for solidifying the sludge wastewater into ice particles; the sterilization mechanism comprises a sterilization bin and an ultraviolet lamp arranged in the sterilization bin, and the sterilization bin is provided with a feeding hole and a discharging hole; the separating mechanism comprises a separating bin, an ash accumulation hopper and an air pump, wherein the separating bin is provided with a feed inlet and a discharge outlet, the ash accumulation hopper is detachably fixed at the discharge outlet, and an air inlet on the air pump is connected with the separating bin through a pipeline; the water collecting mechanism comprises a water collecting tank and a condensing pipe positioned in the water collecting tank, and an air outlet of the air extracting pump is connected with the bottom of the water collecting tank through a pipeline; the treatment process comprises ice particle preparation, ultraviolet sterilization, negative pressure separation and water-gas liquefaction. The application has the advantage of high-efficient separation treatment mud waste water.
Description
Technical Field
The application relates to the technical field of sewage treatment, in particular to a hydraulic engineering sludge wastewater treatment device and process.
Background
Along with social development, people increase the degree of attention to the environment, and the treatment of river sewage is widely carried out. River sewage treatment needs reduction, stabilization and harmless treatment on sludge so as to avoid soil pollution caused by sludge transfer.
The related technology is shown in Chinese patent application with application publication number CN107601799A, which discloses an in-situ treatment method for river sediment, comprising the following steps: extracting the river sediment, and inactivating the river sediment through an inactivation device to kill toxic and harmful substances in the river sediment; mixing the inactivated sediment and the auxiliary agent according to a certain proportion to prepare a sediment mixture; injecting the mixed bottom mud mixture into a filler layer in a sludge filtering tank, standing for several days in the sun, and filtering; standing for several days, detecting the heavy metal content of the sludge above the filler layer, and preparing the culture soil of the plants.
With respect to the related art among the above, the inventors consider that the following drawbacks exist: the sludge treatment process needs to be kept still for several days in the sun, so that the weather condition is required, and the application range is limited.
Disclosure of Invention
In order to solve the problem that the application range is limited due to weather in the sludge treatment process, the application provides a hydraulic engineering sludge wastewater treatment device and process.
First aspect, the application provides a hydraulic engineering sludge wastewater treatment device adopts following technical scheme:
a hydraulic engineering sludge wastewater treatment device comprises a freezing chamber, a sterilization mechanism, a separation mechanism and a water collection mechanism; the freezing chamber is used for solidifying the sludge wastewater into ice particles; the sterilization mechanism comprises a sterilization bin and an ultraviolet lamp arranged in the sterilization bin, and the sterilization bin is provided with a feeding hole and a discharging hole; the separating mechanism comprises a separating bin, an ash accumulation hopper and an air pump, wherein the separating bin is provided with a feeding hole and a discharging hole, the ash accumulation hopper is detachably fixed at the discharging hole, and an air inlet on the air pump is connected with the separating bin through a pipeline and can enable the separating bin to be in a negative pressure state; the water collecting mechanism comprises a water collecting tank and a condensing pipe positioned in the water collecting tank, and the gas outlet of the air pump is connected with the bottom of the water collecting tank through a pipeline.
Through adopting above-mentioned technical scheme, freeze the mud waste water in the freezer chamber and become the ice particle, on the one hand carry out the low temperature to the microorganism in the mud waste water and kill, on the other hand conveniently shifts. The ice particles are put into the sterilizing bin from the feeding hole, and are subjected to ultraviolet sterilization treatment under the irradiation of an ultraviolet lamp, so that most of bacteria and microorganisms in the ice particles are killed. The separation bin is thrown into to the ice grain once more, because the aspiration pump takes out the negative pressure to the separation bin, the ice grain carries out the sublimation in the separation bin, and moisture is direct to be gaseous water from solid-state ice sublimation, and the solid sludge in the ice grain falls under the action of gravity. The gas flow containing the gaseous water is liquefied into liquid water at a condensing pipe in the water collecting tank, so that the sludge wastewater is purified.
Optionally, a spiral plate with gradually reduced height is fixedly connected between the feed inlet and the discharge outlet of the sterilization bin.
Through adopting above-mentioned technical scheme, the ice particle landing on the spiral plate after getting into from the feed inlet in sterilization storehouse, because the height of spiral plate reduces gradually, increased the travel time of ice particle in sterilization storehouse, it is long when having improved ultraviolet irradiation, sterilization effect is good.
Optionally, the ultraviolet lamps are vertically arranged, and the spiral plates are spirally distributed around the ultraviolet lamps.
Through adopting above-mentioned technical scheme, the ultraviolet lamp of vertical setting can shine around 360, and the ice grain removes around the ultraviolet lamp around the helix, and the volume reduces greatly when carrying out the sterilization to the ice grain, and equipment integration nature is high.
Optionally, the spiral plate is a transparent plate.
Through adopting above-mentioned technical scheme, the ultraviolet ray can see through transparent spiral plate and disinfect to the ice particle, has increased the sterilization effect.
Optionally, at least one dispersing component is installed in the sterilization bin, and the dispersing component comprises a stirring shaft located above the spiral plate and a motor driving the stirring shaft to rotate.
Through adopting above-mentioned technical scheme, motor work drives the (mixing) shaft and rotates, and the (mixing) shaft stirs the ice particle on the spiral plate for the light that the ultraviolet lamp sent can shine the ice particle at different positions, improves the sterilization effect.
Optionally, effluent treatment plant still includes the water pump of being connected with the freezer, is equipped with inlet tube and outlet pipe on the water pump, and the outlet pipe is located the freezer in-connection and has the shower nozzle, install heating portion on inlet tube and/or the outlet pipe.
Through adopting above-mentioned technical scheme, mud waste water enters into the freezer under the pump sending of water pump, and the heating part heats mud waste water more than 85 ℃ at this in-process, and hot mud waste water passes through the shower nozzle with the cement form blowout back, meets the low temperature of freezer and solidifies in the twinkling of an eye, shortens the setting time, is favorable to forming the ice particle.
Optionally, an exhaust port is arranged on the water collecting tank, and a catalytic bed is installed at the exhaust port of the water collecting tank.
By adopting the technical scheme, gases such as VOC contained in the sludge are catalyzed and oxidized at the catalytic bed, so that the harm to the environment is reduced.
Optionally, a heat exchanger is connected between the catalytic bed and the pipe on the suction pump.
Through adopting above-mentioned technical scheme, the catalytic bed is exothermic when gaseous catalytic oxidation to VOC, and the heat exchanger can heat this part heat transfer to the pipeline of aspiration pump on, the gas of pumping out the aspiration pump for aqueous vapor in the gas is in the higher state of temperature, and gaseous water is the liquid water more easily condensation when this gas meets the condenser pipe.
In a second aspect, the application provides a hydraulic engineering sludge wastewater treatment process, which adopts the following technical scheme:
a hydraulic engineering sludge wastewater treatment process comprises the following steps:
preparing ice particles: freezing the sludge wastewater to prepare ice particles;
ultraviolet sterilization: sterilizing the ice particles by ultraviolet irradiation;
and (3) negative pressure separation: sublimating and separating ice particles under negative pressure, sublimating moisture in the ice particles from solid state to gaseous state, and separating the moisture from sludge solid in the ice particles to obtain sludge solid particles;
water vapor liquefaction: and condensing the gaseous water into liquid water to obtain purified water.
Optionally, the ice particle making steps are as follows: heating the sludge wastewater to above 85 ℃, then spraying the sludge wastewater in a water drop form, and solidifying the sludge wastewater into ice particles below-10 ℃.
Through adopting above-mentioned technical scheme, can be continuous carry out the separation of mud and waste water to mud waste water to can handle microorganism and VOC gas that contains in the mud simultaneously, environmental protection is effectual.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the sludge wastewater can be continuously separated and treated to obtain purified water, so that the dependence on weather conditions is reduced, and the applicability is wide;
2. the method can decompose VOC gas and microorganisms contained in the sludge when the sludge and the wastewater are separated, and reduce the harm to the environment.
Drawings
FIG. 1 is a schematic overall structure diagram of an embodiment of the present application;
FIG. 2 isbase:Sub>A cross-sectional view taken along the line A-A in FIG. 1;
fig. 3 is a schematic structural view of a sterilization mechanism.
Description of reference numerals: 1. a support; 11. an auxiliary lever; 2. a slurry mixing tank; 21. a filter screen; 3. a water pump; 31. a water inlet pipe; 32. a water outlet pipe; 321. a spray head; 4. a freezing chamber; 41. a blanking hopper; 5. a sterilization mechanism; 51. a sterilization bin; 52. a spiral plate; 53. a dispersion assembly; 531. a motor; 532. a stirring shaft; 54. an ultraviolet lamp; 55. a protective cover; 6. a separating mechanism; 61. separating the bins; 62. a vibration motor; 63. an ash accumulation hopper; 64. an air pump; 641. an air inlet pipe; 642. an air outlet pipe; 7. a water collecting mechanism; 71. a water collection tank; 711. an exhaust port; 72. a condenser tube; 73. a catalytic bed; 74. a drain pipe; 8. a heat exchanger.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses hydraulic engineering mud effluent treatment plant. Referring to fig. 1 and 2, the hydraulic engineering sludge wastewater treatment device comprises a slurry mixing tank 2, a freezing chamber 4, a sterilization mechanism 5, a separation mechanism 6 and a water collecting mechanism 7 which are connected in sequence, wherein a water pump 3 is connected between the slurry mixing tank 2 and the freezing chamber 4. Sludge wastewater is uniformly mixed in the slurry mixing tank 2, slurry water is pumped into the freezing chamber 4 through the water pump 3 to form ice particles, the ice particles enter the sterilizing mechanism 5 for sterilization treatment, the sterilized ice particles are separated into water vapor and sludge powder after passing through the separating mechanism 6, and the water vapor is cooled and condensed into water in the water collecting mechanism 7, so that clean water can be obtained by treating the sludge wastewater.
Referring to fig. 1, the inner cavity of the slurry mixing tank 2 may be a rectangular parallelepiped structure, and the structure of the slurry mixing tank 2 may also be other shapes such as a cylinder according to actual needs. The slurry mixing tank 2 can be made of stainless steel through welding, and can also be made of concrete through pouring after underground excavation of a foundation pit. A filter screen 21 is horizontally arranged in the slurry mixing tank 2, and the filter screen 21 can be a stainless steel punching screen plate and has good corrosion resistance. In the process of injecting the sludge wastewater into the slurry mixing tank 2, larger particle impurities in the wastewater are filtered by the filter screen 21.
The water pump 3 is provided with a water inlet and a water outlet, the water inlet of the water pump 3 is connected with the slurry mixing pool 2 through a water inlet pipe 31, and the water inlet pipe 31 extends into the slurry mixing pool 2; the water outlet of the water pump 3 is connected with the freezing chamber 4 through a water outlet pipe 32, and the water outlet pipe 32 extends into the top wall of the freezing chamber 4. The water inlet pipe 31 or the water outlet pipe 32 is provided with a heater which can be an electric water heating rod, so that the output water temperature reaches more than 85 ℃. Referring to fig. 2, a nozzle 321 is fixedly installed at the end of the water outlet pipe 32, and the nozzle 321 may be a shower nozzle. The heated wastewater is sprayed from the nozzle 321 to form water droplets.
Referring to fig. 1 and 2, in order to reduce the occupied space, the detaching mechanism 6 is connected with a support 1 for supporting, and the support 1 includes a support plate horizontally disposed and pillars fixed to four corners of the support plate. The separating mechanism 6 is installed on a supporting plate of the support 1, the freezing chamber 4 and the sterilizing mechanism 5 are sequentially installed above the separating mechanism 6 from top to bottom, the support 1 further comprises a plurality of auxiliary rods 11 which are vertically fixed on the supporting plate, and the auxiliary rods 11 are used for supporting and fixing the freezing chamber 4 and the sterilizing mechanism 5.
The freezing chamber 4 comprises a cylindrical hollow shell, the outer wall of the shell is fixedly connected with the auxiliary rod 11, and the connection mode can be bolt fixing or welding. The casing is connected to an external freezer which is capable of forming a temperature of-10 ℃ or less in the freezing chamber 4, where the temperature in the freezing chamber 4 may be-15 ℃. In order to save energy, the side wall of the shell is sequentially provided with a stainless steel layer, a heat reflection layer, a heat preservation layer and a stainless steel layer from inside to outside, the stainless steel layer is a stainless steel plate with the thickness of 2mm, the heat reflection layer is an aluminum foil with the thickness of 0.2mm, and the heat preservation layer is a sponge with the thickness of 30 mm. A funnel-shaped hopper 41 is fixed to the bottom of the freezing chamber 4. The hot water is immediately frozen in the environment of-15 ℃ after being sprayed out from the spray nozzle 321 to form ice particles and fall, the particle size of the ice particles is between 5mm and 15mm, and the particle size of the ice particles is optimally controlled to be 5mm for better subsequent sterilization effect.
Referring to fig. 2 and 3, the sterilizing unit 5 is installed below the freezing chamber 4, and the ice particles in the freezing chamber 4 are introduced into the sterilizing unit 5 by gravity. In another embodiment of the present embodiment, the sterilization means 5 may be provided separately from the freezing chamber 4, and the ice particles in the freezing chamber 4 may be transferred to the sterilization means 5 by transportation.
The sterilizing mechanism 5 comprises a sterilizing chamber 51, a dispersing component 53 and an ultraviolet lamp 54, the sterilizing chamber 51 is connected with the freezing chamber 4, and the dispersing component 53 and the ultraviolet lamp 54 are arranged in the sterilizing chamber 51.
The sterilization bin 51 is a cylindrical shell with openings at the upper end and the lower end and a hollow interior, the outer wall of the sterilization bin 51 is fixedly connected with the auxiliary rod 11, the blanking hopper 41 at the top end of the sterilization bin 51 is fixedly connected, and the connection part is sealed; the ultraviolet lamp 54 is a lamp post coaxially and vertically fixed in the sterilization cabin 51, the irradiance value of the ultraviolet lamp 54 at the inner wall of the sterilization cabin 51 is greater than or equal to 90uW/cm, and a lamp holder for supporting the ultraviolet lamp 54 is fixed at the bottom of the sterilization cabin 51. The inner wall of the sterilizing bin 51 is fixed with a spiral plate 52, and the spiral plate 52 is spirally arranged around the axis of an ultraviolet lamp 54. The spiral plate 52 may be a transparent plate, which is beneficial for the light of the ultraviolet lamp 54 to irradiate on the ice particles through the transparent plate, so as to improve the sterilization effect. The spiral plate 52 is a tempered glass plate with a thickness of 20mm, which is not only beneficial to the penetration of ultraviolet rays, but also can maintain the stability under the ultraviolet irradiation state.
In order to improve the irradiation sterilization effect of ultraviolet rays on ice particles, an LED ultraviolet lamp strip is also fixed inside the glass plate.
The dispersing unit 53 is provided with a plurality of spiral plates 52 and is fixedly arranged on the sterilizing chamber 51 along the spiral line. The dispersing component 53 comprises a motor 531 and a stirring shaft 532, the axis of the stirring shaft 532 is horizontally arranged and passes through the sterilizing bin 51, and the stirring shaft 532 is rotatably connected with the side wall of the sterilizing bin 51 through a sealed bearing; the motor 531 is fixed to the outer wall of the sterilization chamber 51 by bolts. The (mixing) shaft 532 includes the axostylus axostyle and along the fixed branch of axostylus axostyle length direction, and the axostylus axostyle sets up along the radial of sterilizing the storehouse 51, and branch and axostylus axostyle vertical fixation.
In order to prevent the ultraviolet lamp 54 from being damaged by the ice particles impacting the ultraviolet lamp 54 during the sliding process, a transparent protective cover 55 is coaxially sleeved and fixed outside the ultraviolet lamp 54, and the protective cover 55 may be a cylindrical toughened glass shell with the thickness of 20 mm.
Referring to fig. 2, the separating mechanism 6 includes a separating bin 61, a vibration motor 62, an ash depositing bucket 63 and an air pump 64, the separating bin 61 is fixedly connected with the bracket 1, the bottom of the separating bin 61 is funnel-shaped, the vibration motor 62 is fixedly mounted on the outer wall of the bottom of the separating bin 61 through a bolt, the ash depositing bucket 63 is detachably fixed and sealed with the bottom of the separating bin 61, and the detachable mode is selected from threaded connection. The air suction pump 64 is provided with an air inlet and an air outlet, the air inlet of the air suction pump 64 is connected with the separation bin 61 through an air inlet pipe 641, the air inlet pipe 641 is installed on the top wall of the separation bin 61, and the air outlet of the air suction pump 64 is connected with an air outlet pipe 642.
The air pump 64 works to pump air inside the separation bin 61, so that the inside of the separation bin 61 is in a negative pressure state, the air pressure inside the separation bin 61 can be-0.06 MPa to-0.08 MPa, and the air pressure inside the separation bin 61 is-0.06 MPa. After the ice particles enter the separation bin 61, under a negative pressure state, the water in a crystalline state in the ice particles is directly sublimated into water vapor, and the water vapor is pumped out along with the air flow by the air pump 64. The soil solid contained in the ice particles falls to the bottom wall of the separation bin 61 in a powdery or granular form under the action of gravity, and the resistance of the solid soil is small due to the low air pressure inside the separation bin 61, so that the possibility of generating dust is reduced. The vibration motor 62 operates to prevent soil solids from sticking, which enter the hopper 63. After working for a period of time, the dust hopper 63 is opened to remove the soil inside.
Referring to fig. 2, the water vapor is pumped by the air pump 64 and then sent to the water collecting mechanism 7 through the air outlet pipe 642. The water collecting mechanism 7 comprises a water collecting tank 71, a condensing pipe 72 and a catalytic bed 73, the water collecting tank 71 can be a plastic tank body or a stainless steel tank body, and an air outlet pipe 642 is connected to the bottom of the side wall of the water collecting tank 71; the condensation pipe 72 can be an aluminum alloy coil pipe fixed inside the water collection tank 71, and cold water which circularly flows is introduced into the aluminum alloy coil pipe; an exhaust port 711 is formed at the top of the water collecting tank 71, and the catalytic bed 73 is fixedly installed at the position of the exhaust port 711 of the water collecting tank 71.
In order to improve the condensation and liquefaction effect of the moisture, an electric heating wire is installed on the air outlet pipe 642, so that the temperature of the air blown out of the air outlet pipe 642 is kept above 20 ℃, the temperature of the air blown out of the air outlet pipe 642 is 50 ℃, and the temperature of the cold water in the condensation pipe 72 is 3-5 ℃. When the air is blown out from the bottom of the water collecting tank 71, the moisture in the hot air flow is cooled and liquefied at the condensing pipe 72 into water drops, and the water drops are collected in the water collecting tank 71. A drain pipe 74 is installed at the bottom of the water collecting tank 71, a control valve is installed on the drain pipe 74, and when the water in the water collecting tank 71 is large, the control valve on the drain pipe 74 is opened to drain the water. Because the water in the water collecting tank 71 is liquefied by the water gas, the purification degree of the waste water is greatly improved compared with the original waste water.
The catalytic bed 73 can be a CCO-500X type catalytic bed, the catalytic bed 73 is fixed on the upper part of the water collecting tank 71 by bolts, malodorous gases such as ammonia, hydrogen sulfide and VOC contained in the released gas in the sludge can be catalytically decomposed at the catalytic bed 73, and the purified gas is discharged from the gas outlet 711, so that the possibility of air pollution caused by the malodorous gases is reduced.
Since the gas releases heat when catalytically decomposed at the catalytic bed 73, in order to make full use of this heat, a heat exchanger 8 is connected between the catalytic bed 73 and the outlet tube 642, and the heat at the catalytic bed 73 can heat the gas at the outlet tube 642.
The application discloses a hydraulic engineering mud effluent treatment plant's theory of operation as follows:
and pouring the sludge wastewater into the slurry mixing tank 2 and keeping stirring to uniformly mix the sludge wastewater as much as possible. The sludge wastewater is pumped into the freezing chamber 4 under the action of the water pump 3 and is sprayed out in a water drop form, and the sludge wastewater is heated to 85 ℃ in the conveying process, so that the fertilizer water sprayed out in the water drop form is instantly frozen to form ice particles.
The ice particles fall into the sterilization chamber 51 and slide along the spiral plate 52, and are sterilized by the ultraviolet lamp 54 during the process, so that most of the bacteria and microorganisms in the waste water are killed. The sterilized ice particles fall into the separation bin 61, the water in the ice particles is sublimated into gas, and the solid substances fall into the dust accumulation hopper 63 under the action of gravity.
The air flow containing moisture enters the water collecting tank 71 and is liquefied into water droplets on the surface of the condensation duct 72, and the water is collected in the water collecting tank 71. The remaining gas is catalytically oxidized as it passes through the catalytic bed 73, reducing the VOC content of the gas.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (5)
1. The utility model provides a hydraulic engineering mud effluent treatment plant which characterized in that includes: the device comprises a slurry mixing tank (2), a freezing chamber (4), a sterilizing mechanism (5), a separating mechanism (6) and a water collecting mechanism (7) which are connected in sequence; the sludge wastewater is uniformly mixed in the slurry mixing pool (2), the slurry is pumped into the freezing chamber (4) through the water pump (3), and the freezing chamber (4) is used for solidifying the sludge wastewater into ice particles; the sterilization mechanism (5) comprises a sterilization bin (51) and an ultraviolet lamp (54) arranged in the sterilization bin (51), and the sterilization bin (51) is provided with a feeding hole and a discharging hole; the separation mechanism (6) comprises a separation bin (61), an ash accumulation hopper (63) and an air pump (64), wherein a feeding hole and a discharging hole are formed in the separation bin (61), the ash accumulation hopper (63) is detachably fixed at the discharging hole of the separation bin (61), the feeding hole of the separation bin (61) is connected with the discharging hole of the sterilization bin (51), and an air inlet in the air pump (64) is connected with the separation bin (61) through a pipeline and can enable the separation bin (61) to be in a negative pressure state; the water collecting mechanism (7) comprises a water collecting tank (71) and a condensing pipe (72) positioned in the water collecting tank (71), and an air outlet of the air pump (64) is connected with the bottom of the water collecting tank (71) through an air outlet pipe (642);
a spiral plate (52) with gradually reduced height is fixedly connected between the feed inlet and the discharge outlet of the sterilizing bin (51);
an exhaust port (711) is formed in the top end of the water collecting tank (71), a catalytic bed (73) is installed at the position, located at the exhaust port (711), of the water collecting tank (71), a drain pipe (74) is installed at the bottom of the water collecting tank (71), and a condensing pipe (72) is located between the catalytic bed (73) and an air outlet pipe (642);
the freezing chamber (4) and the sterilization bin (51) of the sterilization mechanism (5) are sequentially arranged above the separation bin (61) of the separation mechanism (6) from top to bottom;
the hydraulic engineering sludge wastewater treatment device is used for pouring sludge wastewater into the slurry mixing tank (2) and keeping stirring to uniformly mix the sludge wastewater, the sludge wastewater is pumped into the freezing chamber (4) under the action of the water pump (3) and is sprayed out in a water drop mode, and the sludge wastewater is heated to 85 ℃ in the conveying process of the water pump (3), so that the wastewater sprayed out in the water drop mode is instantly frozen to form ice particles;
the ice particles fall into a sterilization bin (51) and slide along a spiral plate (52), and are irradiated by an ultraviolet lamp (54) for sterilization in the process, most of bacteria and microorganisms in the wastewater are killed, the sterilized ice particles fall into a separation bin (61), the water in the ice particles is sublimated into gas under the negative pressure state, and the solid substances fall into an ash accumulation hopper (63) under the action of gravity;
the gas containing water obtained after sublimation enters a water collecting tank (71) and is liquefied into water drops on the surface of a condensing pipe (72), and the water is gathered in the water collecting tank (71), and the residual gas is catalyzed and oxidized when passing through a catalyst bed (73), so that the content of VOC in the gas is reduced;
the ultraviolet lamps (54) are vertically arranged, and the spiral plates (52) are spirally distributed around the ultraviolet lamps (54);
the spiral plate (52) is a transparent plate;
be equipped with inlet tube (31) and outlet pipe (32) on water pump (3), outlet pipe (32) are located freezer (4) in-connection and have shower nozzle (321), install heating portion on inlet tube (31) and outlet pipe (32) at least one.
2. The hydraulic engineering sludge wastewater treatment device of claim 1, wherein: at least one dispersing component (53) is installed in the sterilizing bin (51), and the dispersing component (53) comprises a stirring shaft (532) positioned above the spiral plate (52) and a motor (531) for driving the stirring shaft (532) to rotate.
3. The hydraulic engineering sludge wastewater treatment device of claim 1, wherein: a heat exchanger (8) is connected between the catalytic bed (73) and the gas outlet pipe (642) to heat the gas at the gas outlet pipe (642) by the heat at the catalytic bed (73).
4. The hydraulic engineering sludge wastewater treatment process is characterized by comprising the following steps based on the implementation method of the hydraulic engineering sludge wastewater treatment device according to claim 1:
preparing ice particles: freezing the sludge wastewater to prepare ice particles;
ultraviolet sterilization: sterilizing the ice particles by ultraviolet irradiation;
and (3) negative pressure separation: sublimating and separating the sterilized ice particles under negative pressure, sublimating the water in the ice particles from a solid state to a gaseous state, and separating the water from the sludge solids in the ice particles to obtain sludge solid particles;
water vapor liquefaction: and condensing gaseous water obtained by sublimation in the ice particles into liquid water to obtain purified water.
5. The hydraulic engineering sludge wastewater treatment process according to claim 4, characterized in that: the ice particle preparation steps are as follows: heating the sludge wastewater to above 85 ℃, then spraying the sludge wastewater in a water drop form, and solidifying the sludge wastewater into ice particles below-10 ℃.
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