CN111977781A - High-concentration wastewater pretreatment system applied to extraction of N-methylpyrrolidone - Google Patents
High-concentration wastewater pretreatment system applied to extraction of N-methylpyrrolidone Download PDFInfo
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- CN111977781A CN111977781A CN202010646914.0A CN202010646914A CN111977781A CN 111977781 A CN111977781 A CN 111977781A CN 202010646914 A CN202010646914 A CN 202010646914A CN 111977781 A CN111977781 A CN 111977781A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 73
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 title claims abstract description 25
- 238000000605 extraction Methods 0.000 title claims description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000006243 chemical reaction Methods 0.000 claims abstract description 78
- 238000009826 distribution Methods 0.000 claims abstract description 62
- 238000005191 phase separation Methods 0.000 claims abstract description 38
- 238000003860 storage Methods 0.000 claims abstract description 10
- 238000003466 welding Methods 0.000 claims description 9
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000010802 sludge Substances 0.000 abstract description 24
- 238000000926 separation method Methods 0.000 abstract description 23
- 230000000694 effects Effects 0.000 abstract description 16
- 239000007789 gas Substances 0.000 description 20
- 239000007788 liquid Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000004065 wastewater treatment Methods 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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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)
- Biodiversity & Conservation Biology (AREA)
- Microbiology (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The high-concentration wastewater pretreatment system for extracting the N-methylpyrrolidone comprises a reaction tank, a water distribution device, a three-phase separation device, a water outlet pipe, a gas collection pipe and a gas storage tank; the bottom end of the outer side wall of the reaction tank is provided with a waste water pipe, the water distribution device is arranged at the inner bottom end of the reaction tank, and the water distribution device is connected with the waste water pipe; the three-phase separation device is arranged at the middle end in the reaction tank, and is fixed with the reaction tank through a supporting and fixing mechanism; the water outlet pipe is arranged at the inner top end of the reaction tank and communicated with the outer wall of the reaction tank; the gas collecting pipe is arranged on the inner top surface of the reaction tank; the gas storage tank is arranged on the top surface of the reaction tank and is communicated with the collecting pipe; the wastewater and the activated sludge are fully contacted, so that the reaction rate is high; the three-phase separation device has strong separation effect and high separation speed; the temperature of the reaction tank can be kept at a good separation environment.
Description
Technical Field
The invention relates to the technical field of wastewater treatment, in particular to a high-concentration wastewater pretreatment system applied to extraction of N-methyl pyrrolidone.
Background
The main pollutant indexes of the wastewater produced in the production of methyl pyrrolidone (NMP) are high-concentration COD and ammonia nitrogen, and the wastewater is the wastewater with higher difficulty in chemical wastewater treatment.
The methyl pyrrolidone wastewater is clear and transparent and contains pungent smell, the wastewater has biodegradability, but can inhibit the growth of microorganisms when the concentration is high, so the water inlet concentration of biochemical treatment of a sewage station needs to be strictly controlled, meanwhile, the high ammonia nitrogen wastewater has an inhibiting effect on conventional activated sludge, and the microorganisms are difficult to form a film in a high ammonia nitrogen environment; the methyl pyrrolidone is used as a mailing solvent, and the high-concentration production wastewater of the methyl pyrrolidone not only has a corrosion effect on metals, but also can dissolve PVC glue for bonding PVC pipelines, so that the phenomena of corrosion, falling off and the like of the pipelines are caused; the methyl pyrrolidone waste water generally has temperature, is beneficial to the biochemical treatment of sewage, and ensures the biochemical reaction rate and the growth rate of microorganisms.
The difficulty in treating the methyl pyrrolidone wastewater mainly lies in how to remove high-concentration COD and ammonia nitrogen, wherein for the treatment of the high-concentration COD, a traditional biological denitrification process is generally adopted, the treatment efficiency is lower, the residual sludge amount is large, and the energy consumption is high. With the development of the technology, an upflow anaerobic sludge blanket reactor is provided for the denitrification process of the methyl pyrrolidone, the process flow is that water enters from the bottom of the reactor and is pushed by water power, and the sludge is in an expansion state in the reactor. The mixed liquid is fully reacted and then enters a settling zone with an expanded sectional area, the generated methane enters a gas collection system from the upper part through a three-phase separator, and the sludge returns to the reaction zone by gravity. Sometimes, soft packing is added to the reactor to provide a surface for organisms to grow on, thereby increasing biomass. Its advantages are simple structure, high load rate, short hydraulic stay time, low energy consumption and no need of sludge reflux unit. In the prior art, a water distribution device in a reactor adopts multiple points for distributing wastewater to flow upwards and directly from the bottom end of the reactor, the contact between the wastewater and sludge is poor, the mixing degree of the wastewater and the sludge is low, and the reaction rate of the wastewater at the bottom of the reactor is low; the three-phase separator in the reactor has low separation rate to gas, solid and liquid, and the separation process has insufficient separation; the reaction process of the waste water in the reactor needs to reach a faster reaction separation rate at an adaptive temperature, and the existing device does not have a device for controlling the temperature of the waste water in the reaction tank.
Disclosure of Invention
In order to solve the existing problems, the invention discloses a high-concentration wastewater pretreatment system for extracting N-methylpyrrolidone, which has the following specific technical scheme: the high-concentration wastewater pretreatment system applied to the extraction of the N-methylpyrrolidone comprises a reaction tank, a water distribution device, a three-phase separation device, a water outlet pipe, a gas collection pipe and a gas storage tank;
the bottom end of the outer side wall of the reaction tank is provided with a waste water pipe, the water distribution device is arranged at the inner bottom end of the reaction tank, and the water distribution device is connected with the waste water pipe; the three-phase separation device is arranged at the middle end in the reaction tank, and is fixed with the reaction tank through a supporting and fixing mechanism; the water outlet pipe is arranged at the inner top end of the reaction tank and communicated with the outer wall of the reaction tank; the gas collecting pipe is arranged on the inner top surface of the reaction tank; the gas storage tank is arranged on the top surface of the reaction tank and is communicated with the collecting pipe;
the water distribution device comprises a main pipe, an upper branch pipe, a lower branch pipe, a water distribution disc, a first pipe seat and a second pipe seat; the main pipe is arranged on the inner bottom surface of the reaction tank and is communicated with the waste water pipe; the upper branch pipe is circumferentially arranged on the side wall of the main pipe and is communicated with the main pipe, and an upper branch pipe hole is formed in the end part of the upper branch pipe; the lower branch pipe is arranged on the side wall of the main pipe in the circumferential direction and is communicated with the main pipe; the water distribution disc is circumferentially arranged on the outer side of the main pipe and is fixedly connected with the interior of the reaction tank; the first pipe seat is arranged on the top surface of the water distribution disc and fixed with the upper layer branch pipe; the second pipe seats are arranged on the top surface of the water distribution disc, the lower branch pipes are embedded into each second pipe seat, second pipe seat holes are formed in two sides of each second pipe seat, and the second pipe seat holes are communicated with the lower branch pipes;
the three-phase separation device comprises a shell, a cross frame, a top fixed angle plate, a top movable angle plate, a heat exchange tube, a first bottom angle plate and a second bottom angle plate; the shell is attached to the inner wall of the reaction tank; the transverse frames are arranged at the top end of the interior of the shell and are arranged in parallel; the top fixed angle plates are arranged in parallel at intervals, the top fixed angle plates are arranged on the outer ring of the shell, and the end parts of the top fixed angle plates are respectively fixed with the shell and the cross frame; the top movable angle plate is arranged in the center of the top end of the shell, and two ends of the top movable angle plate are movably connected with the cross frames on two sides; the heat exchange tubes are arranged at the bottom end inside the shell and are arranged in parallel, and each end of the heat exchange tube extends out of the side wall of the reaction tank; the first corner plate is transversely arranged at the bottom end of the interior of the shell, and the shell and the heat exchange tube are fixedly connected through the first corner plate; the second angle plates are arranged between the first angle plates at intervals, and the second angle plates are connected with the shell and the heat exchange tubes;
furthermore, the cross-sectional shape of the main pipe is L-shaped, the transverse section of the main pipe is welded and fixed with the bottom surface of the reaction tank, and the vertical end of the main pipe is welded and fixed with the water distribution disc to be perpendicular to the bottom surface of the reaction tank.
Further, go up the lateral and be the slant set up in the top surface of water distribution dish, go up the lateral all with the person in charge is centripetal setting, the lateral slant set up in the top surface of water distribution dish down, and with go up the lateral and be the layering setting, down the lateral with the person in charge is centripetal setting, go up the lateral with the lateral is dislocation set down.
Furthermore, the upper branch pipe holes are arranged at two sides of the end part of each upper branch pipe and symmetrically arranged, and the upper branch pipe holes at each side are arranged obliquely downwards and face the surface of the water distribution disc; the upper branch pipe holes arranged on each upper branch pipe are densely and sparsely arranged from far to near to the center of the main pipe.
Furthermore, the water distribution plate is disc-shaped and is of an umbrella-shaped structure with a high center and two side bottoms.
Furthermore, the first pipe seats and the corresponding upper branch pipes are arranged in the same direction, and each first pipe seat is obliquely arranged; the cross section of the bottom end of each first pipe seat is of an isosceles trapezoid structure, each first pipe seat is fixed with the top surface of the water distribution disc through welding, the cross section of the top end of each first pipe seat is of a rectangular structure, the top surface of each first pipe seat is supported between the upper branch pipe holes in two sides of each upper branch pipe, and the first pipe seats are fixed with the upper branch pipes through welding.
Furthermore, the section of the second pipe seat is of an isosceles trapezoid structure, the top surface of the second pipe seat is provided with a turbulence block, the turbulence block and the second pipe seat are arranged in the same direction, and the section of the turbulence block is of a diamond structure.
Furthermore, a second pipe seat hole formed in each second pipe seat is symmetrically arranged on two sides, and the second pipe seat hole on each side is obliquely arranged upwards.
Furthermore, the number of the three-phase separation devices is two, and the three-phase separation devices are arranged at the upper side and the lower side; the three-phase separation devices on the two sides are arranged in a staggered mode.
Furthermore, the supporting and fixing mechanism comprises a connecting lug and a supporting ring, the connecting lug is circumferentially welded and fixed to the bottom side of the inner wall of the shell, the supporting ring is welded and fixed to the inner wall of the reaction tank, the shell is supported on the top surface of the supporting ring, and the connecting lug and the supporting ring penetrate through a bolt to fix the shell and the supporting ring.
Furthermore, the surface of the top movable angle plate is provided with an ultrasonic vibration receiver; movable plates are arranged at two end parts of the top movable angle plate, the top movable angle plate is vertically fixed with the movable plates, the section of each movable plate is of a T-shaped structure, fixing columns are arranged on two sides of the top surface and the bottom surface of each movable plate, and the fixing columns are vertically fixed with the movable plates; a spring is sleeved and fixed on the outer wall of the fixed column; the movable plate is attached to the side wall surface of the cross frame, the inner top surface and the inner bottom surface of the cross frame are provided with limiting columns, and one end of each spring is aligned and sleeved on the outer wall of each limiting column, so that the top movable angle plate and the cross frame are movably arranged.
Furthermore, the number of the heat exchange tubes is three, and the heat exchange tubes and the cross frame are arranged in the same direction.
Furthermore, the first bottom angle plate and the heat exchange tube are vertically arranged.
Further, the width of the second bottom corner plate is smaller than that of the first bottom corner plate, and the second bottom corner plate and the first bottom corner plate are arranged at a transverse interval.
The invention has the beneficial effects that:
according to the invention, the water distribution device in the reaction tank is designed into an upper-layer and lower-layer water inlet structure, the upper branch pipe is arranged to spray water obliquely downwards at the upper layer position through the upper branch pipe hole, activated sludge on the bottom surface of the water distribution plate is circulated in a rolling manner, the lower branch pipe is matched to spray water obliquely upwards at the lower layer position through the second pipe seat, and the activated sludge is disturbed through the turbulence block, so that the water distribution device can fully disturb the activated sludge on the top surface of the water distribution plate and form confluence to flow upwards, the wastewater is fully contacted with the activated sludge, the mixing degree of the wastewater and the activated sludge is high, and the reaction rate of the wastewater and the sludge is accelerated.
The reaction tank is internally provided with the two-layer three-phase separation device structure, so that the two-stage separation effect on the wastewater is realized, and the three-phase separation devices on the two sides are arranged in a warp-weft staggered manner, so that the full contact separation effect with the three-phase separation devices in the rising process of the wastewater is ensured, and the full separation process is realized; but the top side center of single three-phase separator designs into vibratable structure between top activity scute and the crossbearer, through the high-frequency vibration acceleration waste water of center side activity scute, the separation effect of gas and mud, aggravation separation effect, separation rate.
The heat exchange tubes are used for replacing a skeleton supporting structure in the three-phase separating device, the heat exchange tubes can realize the supporting and fixing effects on the first bottom angle plate and the second bottom angle plate, meanwhile, the heat exchange tubes are communicated with an external heat flow pipeline, the first bottom angle plate and the second bottom angle plate are used as heat radiating fins at the same time, the heat in the heat exchange tubes can exchange heat with wastewater at the three-phase separating device, the temperature control and the constant temperature of the wastewater in the reaction tank are realized, the good separation temperature environment in the reaction tank is ensured, and the three-phase separation rate of gas, liquid and solid is further promoted; and the structure cost of the three-phase separation device is lower.
Drawings
FIG. 1 is a schematic overall cross-sectional view of the apparatus of the present invention.
FIG. 2 is a schematic view of a partial structure of the water distribution device of the present invention.
Fig. 3 is a schematic structural view of a main pipe of the water distribution device of the present invention.
Fig. 4 is a schematic view of the structure of a three-phase separator of the present invention.
Fig. 5 is a schematic top cross-sectional view of a three-phase separator of the present invention.
Fig. 6 is a schematic cross-sectional elevation view of a three-phase separator of the present invention.
FIG. 7 is a schematic view of the construction between the top gusset and the cross frame of the present invention.
Fig. 8 is a schematic structural view of the support fixing mechanism of the present invention.
List of reference numerals:
a reaction tank 1;
1-1 of a waste water pipe;
a water distribution device 2;
2-1 main pipe, 2-2 upper branch pipe, 2-2-1 upper branch pipe hole, 2-3 lower branch pipe, 2-4 water distribution disc, 2-5 first pipe seat, 2-6 second pipe seat, 2-6-1 second pipe seat hole and 2-7 turbulent flow block;
a three-phase separation device 3;
the device comprises a shell 3-1, a cross frame 3-2, a top fixed angle plate 3-3, a top movable angle plate 3-4, a heat exchange tube 3-5, a first bottom angle plate 3-6, a second bottom angle plate 3-7, an ultrasonic vibration receiver 3-8, a movable plate 3-9, a fixed column 3-10, a spring 3-11 and a limiting column 3-12;
a water outlet pipe 4;
a gas collection pipe 5;
a gas storage tank 6;
a supporting and fixing mechanism 7, a connecting lug 7-1 and a supporting ring 7-2.
Detailed Description
In order to make the technical scheme of the invention clearer and clearer, the invention is further described with reference to the accompanying drawings, and any scheme obtained by carrying out equivalent replacement and conventional reasoning on the technical characteristics of the technical scheme of the invention falls into the protection scope of the invention. The fixed connection, the fixed arrangement and the fixed structure mentioned in the embodiment are all known technologies known to those skilled in the art, such as welding, screw connection, bolt-nut connection, riveting and the like.
The attached drawing shows that the high-concentration wastewater pretreatment system applied to the extraction of the N-methyl pyrrolidone comprises a reaction tank 1, a water distribution device 2, a three-phase separation device 3, a water outlet pipe 4, a gas collection pipe 5 and a gas storage tank 6;
a waste water pipe 1-1 is arranged at the bottom end of the outer side wall of the reaction tank 1, the water distribution device 2 is arranged at the inner bottom end of the reaction tank 1, and the water distribution device 2 is connected with the waste water pipe 1-1; the three-phase separation device 3 is arranged at the middle end in the reaction tank 1, and the three-phase separation device 3 is fixed with the reaction tank 1 through a supporting and fixing mechanism 7; the water outlet pipe 4 is arranged at the inner top end of the reaction tank 1, and the water outlet pipe 4 is communicated with the outer wall of the reaction tank 1; the gas collecting pipe 5 is arranged on the inner top surface of the reaction tank 1; the gas storage tank 6 is arranged on the top surface of the reaction tank 1 and is communicated with the collecting pipe;
the water distribution device 2 comprises a main pipe 2-1, an upper branch pipe 2-2, a lower branch pipe 2-3, a water distribution disc 2-4, a first pipe seat 2-5 and a second pipe seat 2-6; the main pipe 2-1 is arranged on the inner bottom surface of the reaction tank 1 and is communicated with the waste water pipe 1-1; the upper branch pipe 2-2 is circumferentially arranged on the side wall of the main pipe 2-1 and is communicated with the main pipe 2-1, and an upper branch pipe hole 2-2-1 is arranged at the end part of the upper branch pipe 2-2; the lower branch pipe 2-3 is arranged on the side wall of the main pipe 2-1 in the circumferential direction and is communicated with the main pipe 2-1; the water distribution disc 2-4 is circumferentially arranged at the outer side of the main pipe 2-1, and the water distribution disc 2-4 is fixedly connected with the inside of the reaction tank 1; the first pipe seats 2-5 are arranged on the top surfaces of the water distribution discs 2-4, and the first pipe seats 2-5 are fixed with the upper-layer branch pipes; the second pipe seats 2-6 are arranged on the top surfaces of the water distribution discs 2-4, the lower branch pipes 2-3 are embedded into each second pipe seat 2-6, second pipe seat holes 2-6-1 are formed in two sides of each second pipe seat 2-6, and the second pipe seat holes 2-6-1 are communicated with the lower branch pipes 2-3;
the three-phase separation device 3 comprises a shell 3-1, a cross frame 3-2, a top fixed angle plate 3-3, a top movable angle plate 3-4, a heat exchange tube 3-5, a first bottom angle plate 3-6 and a second bottom angle plate 3-7; the shell 3-1 is attached to the inner wall of the reaction tank 1; the transverse frames 3-2 are arranged at the top end of the interior of the shell 3-1 in parallel; the top fixed angle plates 3-3 are arranged in parallel at intervals, the top fixed angle plates 3-3 are arranged on the outer ring of the shell 3-1, and the end parts of the top fixed angle plates 3-3 are respectively fixed with the shell 3-1 and the cross frame 3-2; the top movable angle plate 3-4 is arranged in the center of the top end of the shell 3-1, and two ends of the top movable angle plate 3-4 are movably connected with the transverse frames 3-2 on two sides; the heat exchange tubes 3-5 are arranged at the bottom end of the interior of the shell 3-1 in parallel, and each end of the heat exchange tube 3-5 extends out of the side wall of the reaction tank 1; the first corner plate is transversely arranged at the bottom end of the interior of the shell 3-1, and the shell 3-1 and the heat exchange tube 3-5 are fixedly connected through the first corner plate; the second angle plates are arranged between the first angle plates at intervals and are connected with the shell 3-1 and the heat exchange tubes 3-5;
furthermore, the cross section of the main pipe 2-1 is L-shaped, the transverse section of the main pipe 2-1 is welded and fixed with the bottom surface of the reaction tank 1, and the vertical end of the main pipe 2-1 is welded and fixed with the water distribution disc 2-4 to be perpendicular to the bottom surface of the reaction tank 1.
Furthermore, the upper branch pipes 2-2 are obliquely arranged on the top surface of the water distribution disc 2-4, the upper branch pipes 2-2 and the main pipe 2-1 are arranged centripetally, the lower branch pipes 2-3 are obliquely arranged on the top surface of the water distribution disc 2-4 and are arranged in layers with the upper branch pipes 2-2, the lower branch pipes 2-3 and the main pipe 2-1 are arranged centripetally, and the upper branch pipes 2-2 and the lower branch pipes 2-3 are arranged in a staggered manner.
Furthermore, the upper branch pipe holes 2-2-1 are arranged at two sides of the end part of each upper branch pipe 2-2 symmetrically, and the upper branch pipe holes 2-2-1 at each side are arranged obliquely downwards towards the surface of the water distribution disc 2-4; the upper branch pipe holes 2-2-1 arranged on each upper branch pipe 2-2 are densely and sparsely arranged from far to near to the center of the main pipe 2-1.
Further, the water distribution plate 2-4 is disc-shaped, and the water distribution plate 2-4 is of an umbrella-shaped structure with a high center and two side bottoms.
Further, the first pipe seats 2-5 are arranged in the same direction corresponding to each upper branch pipe 2-2, and each first pipe seat 2-5 is obliquely arranged; the cross section of the bottom end of each first pipe seat 2-5 is of an isosceles trapezoid structure, each first pipe seat 2-5 is fixed with the top surface of the water distribution disc 2-4 through welding, the cross section of the top end of each first pipe seat 2-5 is of a rectangular structure, the top surface of each first pipe seat 2-5 is supported between the upper branch pipe holes 2-2-1 on the two sides of the upper branch pipe 2-2, and the first pipe seats 2-5 are fixedly supported with the upper branch pipes 2-2 through welding.
Furthermore, the section of the second pipe seat 2-6 is in an isosceles trapezoid structure, the top surface of the second pipe seat 2-6 is provided with a turbulence block 2-7, the turbulence block 2-7 and the second pipe seat 2-6 are arranged in the same direction, and the section of the turbulence block 2-7 is in a diamond structure.
Furthermore, second pipe seat holes 2-6-1 arranged on each second pipe seat 2-6 are symmetrically arranged on two sides, and the second pipe seat holes 2-6-1 on each side are obliquely upwards arranged.
Furthermore, the number of the three-phase separation devices 3 is two, and the three-phase separation devices are arranged at the upper side and the lower side; the three-phase separation devices 3 on the two sides are arranged in a staggered manner.
Further, the supporting and fixing mechanism 7 comprises a connecting lug 7-1 and a supporting ring 7-2, the connecting lug 7-1 is circumferentially welded and fixed to the bottom side of the inner wall of the shell 3-1, the supporting ring 7-2 is welded and fixed to the inner wall of the reaction tank 1, the shell 3-1 is supported on the top surface of the supporting ring 7-2, and the shell 3-1 and the supporting ring 7-2 are fixed by penetrating the connecting lug 7-1 and the supporting ring 7-2 through bolts.
Further, the surface of the top movable angle plate 3-4 is provided with an ultrasonic vibration receiver 3-8; movable plates 3-9 are arranged at two end parts of the top movable angle plate 3-4, the top movable angle plate 3-4 is vertically fixed with the movable plates 3-9, the section of the movable plate 3-9 is of a T-shaped structure, fixed columns 3-10 are arranged on two sides of the top surface and the bottom surface of the movable plate 3-9, and the fixed columns 3-10 are vertically fixed with the movable plates 3-9; the outer wall of the fixed column 3-10 is sleeved and fixed with a spring 3-11; the movable plates 3-9 are attached to the side wall surfaces of the transverse frames 3-2, the inner top surfaces and the inner bottom surfaces of the transverse frames 3-2 are provided with limiting columns 3-12, one end of each spring 3-11 is in contraposition and sleeved on the outer walls of the limiting columns 3-12, and the top movable angle plate 3-4 and the transverse frames 3-2 are movably arranged.
Furthermore, the number of the heat exchange tubes 3-5 is three, and the heat exchange tubes and the cross frames 3-2 are arranged in the same direction.
Further, the first bottom angle plate 3-6 is perpendicular to the heat exchange tube 3-5.
Further, the second bottom corner panel 3-7 has a width less than the width of the first bottom corner panel 3-6, and the second bottom corner panel 3-7 is laterally spaced from the first bottom corner panel 3-6.
The structural principle of the invention is as follows:
the invention injects waste water into a reaction tank through a communicated waste water pipe, the waste water is distributed by a main pipe through a water distribution device, the waste water respectively fills a lower branch pipe and an upper branch pipe through the split flow of the main pipe, the waste water in the upper branch pipe obliquely flows downwards through the upper branch pipe holes on two sides and flows to one side of a second pipe seat by being attached to the top surface of a water distribution disc, meanwhile, the waste water in the lower branch pipe obliquely flows upwards through the second pipe seat holes, and is converged and coiled with the waste water flowing out of the upper branch pipe holes to flow upwards along with movable sludge, and the flow of the waste water is disturbed by a turbulence block to form turbulent flow upwards; in the three-phase separation device for upward flowing of the wastewater, the sludge, the wastewater and the gas generated by reaction are subjected to multi-layer separation through a first bottom angle plate and a second bottom angle plate; meanwhile, the heat exchange tube is communicated with an external hot water pipeline, hot water is connected into the heat exchange tube, the first bottom angle plate and the second bottom angle plate are used as heat exchange fins at the same time, heat in the heat exchange tube is exchanged with waste water, and the temperature in the three-phase separation device is kept constant; the top movable angle plate on the top layer of the shell is vibrated by the ultrasonic vibration receiver, the movable plate and the cross frame are slightly vibrated vertically, and the top movable angle plate accelerates the three-phase separation of the wastewater in the center of the shell; after the separation of the two three-phase separation devices, the movable sludge falls back to the bottom surface of the reaction tank, the gas is collected in the gas storage tank through the gas collecting pipe, and the waste liquid is discharged through the water outlet pipe.
The invention has the beneficial effects that:
according to the invention, the water distribution device in the reaction tank is designed into an upper-layer and lower-layer water inlet structure, the upper branch pipe is arranged to spray water obliquely downwards at the upper layer position through the upper branch pipe hole, activated sludge on the bottom surface of the water distribution plate is circulated in a rolling manner, the lower branch pipe is matched to spray water obliquely upwards at the lower layer position through the second pipe seat, and the activated sludge is disturbed through the turbulence block, so that the water distribution device can fully disturb the activated sludge on the top surface of the water distribution plate and form confluence to flow upwards, the wastewater is fully contacted with the activated sludge, the mixing degree of the wastewater and the activated sludge is high, and the reaction rate of the wastewater and the sludge is accelerated.
The reaction tank is internally provided with the two-layer three-phase separation device structure, so that the two-stage separation effect on the wastewater is realized, and the three-phase separation devices on the two sides are arranged in a warp-weft staggered manner, so that the full contact separation effect with the three-phase separation devices in the rising process of the wastewater is ensured, and the full separation process is realized; but the top side center of single three-phase separator designs into vibratable structure between top activity scute and the crossbearer, through the high-frequency vibration acceleration waste water of center side activity scute, the separation effect of gas and mud, aggravation separation effect, separation rate.
The heat exchange tubes are used for replacing a skeleton supporting structure in the three-phase separating device, the heat exchange tubes can realize the supporting and fixing effects on the first bottom angle plate and the second bottom angle plate, meanwhile, the heat exchange tubes are communicated with an external heat flow pipeline, the first bottom angle plate and the second bottom angle plate are used as heat radiating fins at the same time, the heat in the heat exchange tubes can exchange heat with wastewater at the three-phase separating device, the temperature control and the constant temperature of the wastewater in the reaction tank are realized, the good separation temperature environment in the reaction tank is ensured, and the three-phase separation rate of gas, liquid and solid is further promoted; and the structure cost of the three-phase separation device is lower.
Claims (10)
1. The high-concentration wastewater pretreatment system applied to the extraction of the N-methylpyrrolidone comprises a reaction tank (1), a water distribution device (2), a three-phase separation device (3), a water outlet pipe (4), a gas collection pipe (5) and a gas storage tank (6);
a waste water pipe (1-1) is arranged at the bottom end of the outer side wall of the reaction tank (1), the water distribution device (2) is arranged at the inner bottom end of the reaction tank (1), and the water distribution device (2) is connected with the waste water pipe (1-1); the three-phase separation device (3) is arranged at the middle end in the reaction tank (1), and the three-phase separation device (3) is fixed with the reaction tank (1) through a supporting and fixing mechanism (7); the water outlet pipe (4) is arranged at the inner top end of the reaction tank (1), and the water outlet pipe (4) is communicated with the outer wall of the reaction tank (1); the gas collecting pipe (5) is arranged on the inner top surface of the reaction tank (1); the gas storage tank (6) is arranged on the top surface of the reaction tank (1) and is communicated with the collecting pipe;
the water distribution device (2) is characterized by comprising a main pipe (2-1), an upper branch pipe (2-2), a lower branch pipe (2-3), a water distribution disc (2-4), a first pipe seat (2-5) and a second pipe seat (2-6); the main pipe (2-1) is arranged on the inner bottom surface of the reaction tank (1) and is communicated with the waste water pipe (1-1); the upper branch pipe (2-2) is circumferentially arranged on the side wall of the main pipe (2-1) and is communicated with the main pipe (2-1), and an upper branch pipe hole (2-2-1) is formed in the end part of the upper branch pipe (2-2); the lower branch pipe (2-3) is arranged on the side wall of the main pipe (2-1) in the circumferential direction and is communicated with the main pipe (2-1); the water distribution discs (2-4) are circumferentially arranged on the outer side of the main pipe (2-1), and the water distribution discs (2-4) are fixedly connected with the inside of the reaction tank (1); the first pipe seats (2-5) are arranged on the top surfaces of the water distribution discs (2-4), and the first pipe seats (2-5) are fixed with the upper-layer branch pipes; the second pipe seats (2-6) are arranged on the top surfaces of the water distribution discs (2-4), the lower branch pipes (2-3) are embedded into each second pipe seat (2-6), second pipe seat holes (2-6-1) are formed in two sides of each second pipe seat (2-6), and the second pipe seat holes (2-6-1) are communicated with the lower branch pipes (2-3);
the three-phase separation device (3) comprises a shell (3-1), a cross frame (3-2), a top fixed angle plate (3-3), a top movable angle plate (3-4), a heat exchange tube (3-5), a first bottom angle plate (3-6) and a second bottom angle plate (3-7); the shell (3-1) is attached to the inner wall of the reaction tank (1); the transverse frames (3-2) are arranged at the top end of the interior of the shell (3-1) in parallel; the top fixing angle plates (3-3) are arranged in parallel at intervals, the top fixing angle plates (3-3) are arranged on the outer ring of the shell (3-1), and the end parts of the top fixing angle plates (3-3) are respectively fixed with the shell (3-1) and the cross frame (3-2); the top movable angle plate (3-4) is arranged in the center of the top end of the shell (3-1), and two ends of the top movable angle plate (3-4) are movably connected with the cross frames (3-2) on two sides; the heat exchange tubes (3-5) are arranged at the bottom end in the shell (3-1) in parallel, and each end of the heat exchange tube (3-5) extends out of the side wall of the reaction tank (1); the first corner plate is transversely arranged at the bottom end of the interior of the shell (3-1), and the shell (3-1) and the heat exchange tube (3-5) are fixedly connected through the first corner plate; the second angle plates are arranged between the first angle plates at intervals and are connected with the shell (3-1) and the heat exchange tubes (3-5).
2. The pretreatment system for high concentration wastewater for N-methylpyrrolidone extraction according to claim 1, wherein the main pipe (2-1) has an L-shaped cross section, the horizontal section of the main pipe (2-1) is fixed by welding with the bottom surface of the reaction tank (1), and the vertical end of the main pipe (2-1) is fixed by welding with the water distribution plate (2-4) and is arranged perpendicular to the bottom surface of the reaction tank (1).
3. The pretreatment system for high concentration wastewater for N-methylpyrrolidone extraction according to claim 1, wherein said upper branch pipes (2-2) are obliquely arranged on the top surface of said water distribution tray (2-4), said upper branch pipes (2-2) are all arranged centripetally to said main pipe (2-1), said lower branch pipes (2-3) are obliquely arranged on the top surface of said water distribution tray (2-4) and are arranged in layers to said upper branch pipes (2-2), said lower branch pipes (2-3) are arranged centripetally to said main pipe (2-1), and said upper branch pipes (2-2) and said lower branch pipes (2-3) are arranged in offset positions.
4. The pretreatment system for high concentration wastewater for N-methylpyrrolidone extraction according to claim 1, wherein said upper branch pipe holes (2-2-1) are symmetrically disposed at both sides of the end of each of said upper branch pipes (2-2), and the surface of each of said upper branch pipe holes (2-2-1) facing the water distribution tray (2-4) is disposed diagonally downward; the upper branch pipe holes (2-2-1) arranged on each upper branch pipe (2-2) are densely and sparsely arranged from far to near to the center of the main pipe (2-1).
5. The pretreatment system for high concentration wastewater for N-methylpyrrolidone extraction according to claim 1, wherein said first pipe seats (2-5) are provided in the same direction corresponding to each of said upper branch pipes (2-2), and each of said first pipe seats (2-5) is provided in an inclined direction; the cross section of the bottom end of each first pipe seat (2-5) is of an isosceles trapezoid structure, the cross section of the top end of each first pipe seat (2-5) is fixed with the top surface of the water distribution disc (2-4) through welding, the cross section of the top end of each first pipe seat (2-5) is of a rectangular structure, the top surface of each first pipe seat (2-5) is supported between the upper branch pipe holes (2-2-1) on the two sides of the upper branch pipe (2-2), and the first pipe seats (2-5) are fixedly supported with the upper branch pipes (2-2) through welding.
6. The pretreatment system for high concentration wastewater for N-methylpyrrolidone extraction according to claim 1, wherein the cross section of said second pipe socket (2-6) is isosceles trapezoid structure, the top surface of said second pipe socket (2-6) is provided with turbulence block (2-7), said turbulence block (2-7) and said second pipe socket (2-6) are arranged in the same direction, the cross section of said turbulence block (2-7) is diamond structure.
7. The pretreatment system for high concentration wastewater for N-methylpyrrolidone extraction according to claim 1, wherein said second socket holes (2-6-1) of each of said second sockets (2-6) are symmetrically disposed at both sides, and said second socket holes (2-6-1) of each side are disposed in an inclined upward direction.
8. The pretreatment system for high concentration wastewater for N-methylpyrrolidone extraction according to claim 1, wherein the number of said three-phase separation means (3) is two, and said three-phase separation means is disposed at upper and lower sides; the three-phase separation devices (3) on the two sides are arranged in a staggered manner.
9. The high-concentration wastewater pretreatment system applied to the extraction of N-methylpyrrolidone according to claim 1, wherein said supporting and fixing mechanism (7) comprises an engaging lug (7-1) and a supporting ring (7-2), said engaging lug (7-1) is circumferentially welded and fixed on the bottom side of the inner wall of said housing (3-1), said supporting ring (7-2) is welded and fixed on the inner wall of said reaction tank (1), said housing (3-1) is supported on the top surface of said supporting ring (7-2), and said housing (3-1) and said supporting ring (7-2) are fixed by bolts penetrating through said engaging lug (7-1) and said supporting ring (7-2).
10. The pretreatment system for high concentration wastewater for N-methylpyrrolidone extraction according to claim 1, wherein the surface of said top movable corner plate (3-4) is provided with an ultrasonic vibration receiver (3-8); movable plates (3-9) are arranged at two end parts of the top movable angle plate (3-4), the top movable angle plate (3-4) is vertically fixed with the movable plates (3-9), the section of each movable plate (3-9) is of a T-shaped structure, fixed columns (3-10) are arranged on two sides of the top surface and the bottom surface of each movable plate (3-9), and the fixed columns (3-10) are vertically fixed with the movable plates (3-9); the outer wall of the fixed column (3-10) is sleeved and fixed with a spring (3-11); the movable plates (3-9) are attached to the side wall surfaces of the transverse frames (3-2), limiting columns (3-12) are arranged on the inner top surfaces and the inner bottom surfaces of the transverse frames (3-2), one end of each spring (3-11) is in contraposition sleeve joint with the outer walls of the limiting columns (3-12), and the top movable angle plates (3-4) and the transverse frames (3-2) are movably arranged.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007678A (en) * | 2007-01-19 | 2007-08-01 | 华南理工大学 | Temperature controlled USAB anaerobic ammoxidation strain denitrogenation method and its apparatus |
| JP2014188485A (en) * | 2013-03-28 | 2014-10-06 | Sumitomo Heavy Ind Ltd | Anaerobic treatment method |
| CN203922846U (en) * | 2014-05-23 | 2014-11-05 | 富民富发生态牧业有限公司 | A kind of UASB reactor with heat exchange function |
| CN207738597U (en) * | 2017-12-13 | 2018-08-17 | 浙江深澜环境工程有限公司 | A kind of EGSB anaerobic reactors |
| CN111137974A (en) * | 2020-01-09 | 2020-05-12 | 甘肃朴门生态管理咨询有限公司 | Reactor for high-temperature anaerobic fermentation of kitchen sewage |
| CN212292989U (en) * | 2020-06-23 | 2021-01-05 | 山东太平洋环保股份有限公司 | Reactor for removing organic carbon, nitrate nitrogen and ammonia nitrogen in industrial wastewater |
-
2020
- 2020-07-07 CN CN202010646914.0A patent/CN111977781A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101007678A (en) * | 2007-01-19 | 2007-08-01 | 华南理工大学 | Temperature controlled USAB anaerobic ammoxidation strain denitrogenation method and its apparatus |
| JP2014188485A (en) * | 2013-03-28 | 2014-10-06 | Sumitomo Heavy Ind Ltd | Anaerobic treatment method |
| CN203922846U (en) * | 2014-05-23 | 2014-11-05 | 富民富发生态牧业有限公司 | A kind of UASB reactor with heat exchange function |
| CN207738597U (en) * | 2017-12-13 | 2018-08-17 | 浙江深澜环境工程有限公司 | A kind of EGSB anaerobic reactors |
| CN111137974A (en) * | 2020-01-09 | 2020-05-12 | 甘肃朴门生态管理咨询有限公司 | Reactor for high-temperature anaerobic fermentation of kitchen sewage |
| CN212292989U (en) * | 2020-06-23 | 2021-01-05 | 山东太平洋环保股份有限公司 | Reactor for removing organic carbon, nitrate nitrogen and ammonia nitrogen in industrial wastewater |
Non-Patent Citations (1)
| Title |
|---|
| *** 编著: "《超声波清洗技术》", 30 September 2019, 武汉理工大学出版社 * |
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