CN108946914B - Coal chemical industry advanced wastewater treatment CoSD reaction tower - Google Patents
Coal chemical industry advanced wastewater treatment CoSD reaction tower Download PDFInfo
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- CN108946914B CN108946914B CN201810820383.5A CN201810820383A CN108946914B CN 108946914 B CN108946914 B CN 108946914B CN 201810820383 A CN201810820383 A CN 201810820383A CN 108946914 B CN108946914 B CN 108946914B
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- ozone
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- 238000006243 chemical reaction Methods 0.000 title claims abstract description 78
- 239000003245 coal Substances 0.000 title claims abstract description 23
- 239000000126 substance Substances 0.000 title claims abstract description 23
- 238000004065 wastewater treatment Methods 0.000 title abstract description 4
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 107
- 239000002351 wastewater Substances 0.000 claims abstract description 56
- 238000000926 separation method Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000010865 sewage Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims 1
- 239000003054 catalyst Substances 0.000 description 7
- 230000002035 prolonged effect Effects 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000006555 catalytic reaction Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 125000005575 polycyclic aromatic hydrocarbon group Chemical group 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000005273 aeration Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 150000002391 heterocyclic compounds Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/007—Modular design
Abstract
The invention belongs to the technical field of coal chemical wastewater treatment, and particularly relates to a coal chemical wastewater advanced treatment CoSD reaction tower which comprises a reaction tower body and a separation tower, wherein a vertical ozone pipe is arranged on the bottom surface in the reaction tower body; the upper end of the separation tower is connected with one side of the reaction tower body through a water guide pipe; the ozone generator also comprises a spiral tube and a swing module, wherein the ozone tube is provided with an elastic spiral tube, and two ends of the spiral tube are communicated with the inside of the ozone tube; the swing module comprises a slide block, a gear, a swing rod and a support ring, wherein straight teeth are arranged on two sides of the slide block, and the slide block is used for driving the gear to rotate; the gear is arranged on the inner wall of the ozone pipe, and one side of the gear is fixedly connected with one end of the oscillating rod; the other end of the swinging rod is provided with a supporting ring; the support ring is sleeved on the spiral pipe. According to the invention, through the spiral pipe and the swing module, ozone is enabled to react rapidly in the reaction tower, so that efficient advanced treatment of the coal chemical industry wastewater is realized.
Description
Technical Field
The invention belongs to the technical field of coal chemical wastewater treatment, and particularly relates to a CoSD reaction tower for advanced treatment of coal chemical wastewater.
Background
The coal chemical industry wastewater is organic wastewater which is complex in components and difficult to biodegrade, the main organic components of the wastewater are phenolic compounds, Polycyclic Aromatic Hydrocarbons (PAH), heterocyclic compounds containing S, N, O and the like, and toxic and harmful pollutants which are difficult to biodegrade are generated. Therefore, the standard discharge of the coal chemical industry wastewater becomes a bottleneck restricting the development of the coal chemical industry, and further advanced treatment of the coal chemical industry wastewater becomes an urgent need for the development of the coal chemical industry.
Ozone oxidation is a commonly used advanced treatment technology for coal chemical wastewater at present, and has the advantages of strong oxidizing property and excellent decoloring capability of ozone; the defects of low ozone utilization rate, secondary pollution of ozone tail gas, high water purification cost and selectivity on degradation of organic matters, and influence on further industrial popularization and application. The ozone catalysis is to utilize a catalyst to catalyze ozone to generate hydroxyl radicals with stronger oxidation capacity than ozone, the hydroxyl radicals have no selectivity, the cost of the ozone catalysis is only 40% of that of the ozone oxidation, the pollutant removal rate is far higher than that of the ozone oxidation, organic matters which are difficult to oxidize by ozone can be degraded at normal temperature and normal pressure, and the ozone catalysis is a preferred technology for advanced treatment of coal chemical wastewater.
Some advanced treatment technical schemes using ozone also appear in the prior art, for example, a chinese patent with application number 2017107699716 discloses a low-cost coal chemical industry wastewater advanced treatment CoSD reaction tower, which comprises a reaction tower body, the upper end of the reaction tower body is provided with a sewage inlet, and the inner bottom surface of the reaction tower body is provided with a vertical ozone pipe, the lower surface of the reaction tower body is provided with an ozone booster pump, a catalyst can be put into the reaction tower body through a first feeding port, so that the reaction is more thorough, ozone can be extracted into the reaction tower body through the ozone booster pump, gas is released into the reaction tower body through an ozone pipe and an aeration pipe, so that the reaction is more sufficient, unreacted ozone in the reaction tower body can be extracted into a separation tower through an air extracting pump, waste residues in sewage can be separated through the separation tower, water is further purified, and the low-cost coal chemical industry wastewater advanced treatment CoSD reaction tower has a simple structure, the operation is simple, the ozone can be fully utilized, the secondary pollution is avoided, and the water purification cost is saved.
The technical scheme can realize the advanced treatment of the coal chemical industry wastewater, but the reaction of ozone and wastewater is insufficient in the scheme, and the efficiency needs to be improved; aiming at the defects, the invention provides a coal chemical industry wastewater advanced treatment CoSD reaction tower which can realize high-efficiency wastewater advanced treatment.
Disclosure of Invention
In order to make up the defects of the prior art, the coal chemical wastewater advanced treatment CoSD reaction tower provided by the invention has the advantages that sewage is pumped into the reaction tower body through the sewage inlet, the ozone catalyst is simultaneously placed into the reaction tower body, ozone is pumped into the ozone pipe through the ozone booster pump, and then the ozone is released into the reaction tower body through the spiral pipe communicated with the ozone pipe; when ozone is filled into the ozone pipe, the sliding block in the ozone pipe slides to the top, so that the gear on the inner wall of the ozone pipe is driven, the swinging rod drives the supporting ring to swing, the spiral pipe further swings, ozone and wastewater are in full contact, and the reaction efficiency is improved.
The technical scheme adopted by the invention for solving the technical problems is as follows: the coal chemical wastewater advanced treatment CoSD reaction tower comprises a reaction tower body and a separation tower, wherein a sewage inlet is formed in the upper end of the reaction tower body, and a vertical ozone pipe is arranged on the bottom surface in the reaction tower body; the lower surface of the reaction tower body is provided with an ozone booster pump; the upper end of one side of the reaction tower body is provided with a first feeding port; the upper end of the separation tower is connected with one side of the reaction tower body through a water guide pipe; the ozone generator also comprises a spiral tube and a swing module, wherein the ozone tube is provided with an elastic spiral tube, two ends of the spiral tube are communicated with the inside of the ozone tube, and the spiral tube is provided with uniformly distributed air outlets; the swing module comprises a slide block, a gear, a swing rod and a support ring, and the slide block is arranged in the ozone pipe; straight teeth are arranged on two sides of the sliding block, and the sliding block is used for driving the gear to rotate; the gear is arranged on the inner wall of the ozone pipe, and one side of the gear is fixedly connected with one end of the oscillating rod; the other end of the swinging rod is provided with a supporting ring; the support ring is sleeved on the spiral pipe. When the device works, sewage is pumped into the reaction tower body through the sewage inlet, the ozone catalyst is placed into the reaction tower body, ozone is pumped into the ozone pipe through the ozone booster pump, and then the spiral pipe communicated with the ozone pipe releases the ozone into the reaction tower body; when ozone is filled into the ozone pipe, the sliding block in the ozone pipe slides to the top, so that the sliding block drives the gear on the inner wall of the ozone pipe to drive the oscillating rod, the oscillating rod drives the supporting ring to oscillate, the spiral pipe oscillates, ozone is fully contacted with wastewater, and the reaction efficiency is improved.
Preferably, the swinging rod and the supporting ring are connected through a connecting rod; one end of the connecting rod is hinged to the swinging rod, and the other end of the connecting rod is fixedly connected to the support ring. During operation, the connecting rod connected on the oscillating rod and the support ring drives the connecting rod to swing when the oscillating rod is stressed to swing, so that the effect of stirring waste water can be achieved, and further the reaction efficiency is improved.
Preferably, the support ring is composed of a middle ring and two side rings, the side rings are respectively positioned at two sides of the middle ring, and the side rings are connected with the middle ring through elastic elements. During operation, when the connecting rod swings, the support ring can be driven to push the spiral pipe outwards, so that the support ring connected through the elastic element contracts inwards, the local stress of the spiral pipe is reduced, and the service life of the spiral pipe is prolonged.
Preferably, the elastic element is a spring or an arc-shaped elastic plate; the arc elastic plate is protruded towards the inner side of the spiral pipe. During operation, when the connecting rod swings, the supporting ring is driven to contract inwards, and wastewater in the arc elastic plate is extruded, so that the flow of the wastewater is improved, and the reaction efficiency can be improved.
Preferably, the side ring is provided with a round angle at the contact side with the spiral pipe. During operation, when the connecting rod swings, the inner side of the side ring is provided with the round angle to reduce the local stress of the spiral pipe, so that the service life of the spiral pipe can be prolonged.
Preferably, the support ring is provided with a trumpet-shaped through hole. During operation, set up tubaeform through-hole on the support ring for waste water is gathered when passing through, improves the mobility of waste water, makes ozone and waste water intensive mixing, thereby can improve reaction efficiency.
Preferably, the axis of the through hole is perpendicular to the connecting rod. During operation, when the connecting rod rotates, the resistance of waste water is reduced when passing through the through hole, so that the waste water can better pass through the through hole, and the reaction efficiency is improved.
The invention has the following beneficial effects:
1. sewage is pumped into the reaction tower body through the sewage inlet, the ozone catalyst is placed into the reaction tower body, ozone is pumped into the ozone pipe through the ozone booster pump, and then the spiral pipe communicated with the ozone pipe releases the ozone into the reaction tower body; when the ozone pipe is filled with ozone, the slide block in the ozone pipe slides to the top, so as to drive the gear on the inner wall of the ozone pipe; the support ring is driven to swing by the swing rod, and the spiral pipe is further swung by the swing rod; a connecting rod is arranged between the oscillating rod and the support ring, and when the oscillating rod is stressed to oscillate, the connecting rod is driven to oscillate to stir the wastewater; thereby being capable of leading the ozone to be fully contacted with the waste water and improving the reaction efficiency.
2. According to the invention, the support ring is composed of three rings, and when the connecting rod swings, the connecting rod drives the support ring to push the spiral tube outwards, so that the support ring connected through the elastic element contracts inwards, and the local stress of the spiral tube is reduced; the inner side of the side ring is provided with a fillet, so that the stress of the spiral pipe is further reduced; thereby improving the service life of the spiral pipe.
3. According to the invention, the elastic element is specifically set to be the spring or the arc-shaped elastic plate, and the arc-shaped elastic plate protruding towards the side of the spiral pipe can extrude the wastewater in the arc-shaped elastic plate when the support ring swings, so that the flowability of the wastewater can be improved, and the reaction efficiency is improved; and set up the through-hole of loudspeaker form on the support ring, the through-hole axis is perpendicular with the connecting rod for thereby by the pinching when waste water passes through, thereby reduce the resistance that waste water passed through can be better pass from the through-hole, improve the mobility of waste water, make ozone and waste water intensive mixing, thereby can further improve reaction efficiency.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is a cross-sectional view B-B of FIG. 2;
FIG. 4 is a schematic structural view of a support ring of the present invention;
in the figure: the device comprises a reaction tower body 1, a sewage inlet 11, a first feed inlet 12, a separation tower 2, an ozone pipe 3, a spiral pipe 4, a swing module 5, a slide block 51, a gear 51, a swing rod 53, a support ring 54, a connecting rod 55, a middle ring 6, a side ring 7, an arc-shaped elastic plate 8, a fillet 9 and a through hole 10.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the CoSD reaction tower for advanced treatment of coal chemical wastewater comprises a reaction tower body 1 and a separation tower 2, wherein a sewage inlet 11 is formed at the upper end of the reaction tower body 1, and a vertical ozone pipe 3 is arranged at the bottom surface in the reaction tower body 1; the lower surface of the reaction tower body 1 is provided with an ozone booster pump; the upper end of one side of the reaction tower body 1 is provided with a first feeding port 12; the upper end of the separation tower 2 is connected with one side of the reaction tower body 1 through a water guide pipe; the ozone generator further comprises a spiral tube 4 and a swing module 5, wherein the ozone tube 3 is provided with the elastic spiral tube 4, two ends of the spiral tube 4 are communicated with the inside of the ozone tube 3, and the spiral tube 4 is provided with uniformly distributed air outlets; the swing module 5 comprises a slide block 51, a gear 52, a swing rod 53 and a support ring 54, wherein the slide block 51 is arranged inside the ozone tube 3; straight teeth are arranged on two sides of the sliding block 51, and the sliding block 51 is used for driving the gear 52 to rotate; the gear 52 is arranged on the inner wall of the ozone tube 3, and one side of the gear 52 is fixedly connected with one end of the oscillating rod 53; the other end of the swinging rod 53 is provided with a supporting ring 54; the support ring 54 is sleeved on the spiral pipe 4. When the device works, sewage is pumped into the reaction tower body 1 through the sewage inlet 11, the ozone catalyst is placed into the reaction tower body 1, ozone is pumped into the ozone pipe 3 through the ozone booster pump, and then the ozone is released into the reaction tower body 1 through the spiral pipe 4 communicated with the ozone pipe 3; when ozone is filled into the ozone tube 3, the sliding block 51 in the ozone tube 3 slides to the top, so that the gear 52 on the inner wall of the ozone tube 3 is driven, the swinging rod 53 drives the supporting ring 54 to swing, the spiral tube 4 swings, ozone is fully contacted with wastewater, and the reaction efficiency is improved.
As an embodiment of the present invention, the swing lever 53 and the support ring 54 are connected by a link 55; one end of the connecting rod 55 is hinged on the swinging rod 53, and the other end of the connecting rod 55 is fixedly connected on the supporting ring 54. During operation, the connecting rod 55 connected to the oscillating rod 53 and the support ring 54 drives the connecting rod 55 to oscillate when the oscillating rod 53 is stressed to oscillate, so as to achieve the effect of stirring wastewater, and further improve the reaction efficiency.
In one embodiment of the present invention, the support ring 54 is composed of a middle ring 6 and two side rings 7, the side rings 7 are respectively located at two sides of the middle ring 6, and the side rings 7 are connected with the middle ring 6 through elastic elements. In operation, when the connecting rod 55 swings, the support ring 54 is driven to push the spiral tube 4 outwards, so that the support ring 54 connected by the elastic element contracts inwards, the local stress of the spiral tube 4 is reduced, and the service life of the spiral tube 4 is prolonged.
As an embodiment of the invention, according to claim 3, the elastic element is a spring or an arc-shaped elastic plate 8; the arc-shaped elastic plate 8 protrudes towards the inner side of the spiral pipe 4. During operation, when the connecting rod 55 swings, the supporting ring 54 is driven to contract inwards, and the wastewater in the arc-shaped elastic plate 8 is extruded, so that the flow of the wastewater is improved, and the reaction efficiency can be improved.
In one embodiment of the invention, the side ring 7 is provided with a fillet 9 on the side contacting the spiral tube 4. During operation, when the connecting rod 55 swings, the inner side of the side ring 7 is provided with the round angle 9 to reduce the local stress of the spiral pipe 4, so that the service life of the spiral pipe 4 can be prolonged.
In one embodiment of the present invention, the support ring 54 is provided with a trumpet-shaped through hole 10. During operation, the support ring 54 is provided with the horn-shaped through hole 10, so that waste water is collected when passing through, the mobility of the waste water is improved, ozone and the waste water are fully mixed, and the reaction efficiency can be improved.
In one embodiment of the present invention, the axis of the through hole 10 is perpendicular to the connecting rod 55. In operation, when the connecting rod 55 rotates, the resistance of the waste water passing through the through hole 10 is reduced so that the waste water can better pass through the through hole 10, thereby improving the reaction efficiency.
When the device works, sewage is pumped into the reaction tower body 1 through the sewage inlet 11, the ozone catalyst is placed into the reaction tower body 1, ozone is pumped into the ozone pipe 3 through the ozone booster pump, and then odor is released into the reaction tower body 1 through the spiral pipe 4 communicated with the ozone pipe 3; when ozone is filled into the ozone tube 3, the slide block 51 in the ozone tube 3 slides towards the top, so that the gear 52 on the inner wall of the ozone tube 3 is driven, the swinging rod 53 drives the support ring 54 to swing, and the spiral tube 4 swings, so that the ozone is fully contacted with the wastewater, and the reaction efficiency is improved; a connecting rod 55 is arranged between the swinging rod 53 and the supporting ring 54, and when the swinging rod 53 is stressed to swing, the connecting rod 55 is driven to swing so as to stir the wastewater; when the connecting rod 55 swings, the connecting rod 55 drives the supporting ring 54 to push the spiral tube 4 outwards, so that the supporting ring 54 consisting of three rings and connected by an elastic element contracts inwards, the local stress of the spiral tube 4 is reduced, and the service life of the spiral tube 4 is prolonged; meanwhile, the inner side of the side ring 7 is provided with a fillet 9, so that the stress of the spiral pipe 4 is further reduced; the elastic element is specifically a spring or an arc-shaped elastic plate 8, and the arc-shaped elastic plate 8 protruding towards the side of the spiral tube 4 can extrude the wastewater in the arc-shaped elastic plate 8 when the support ring 54 swings, so that the flowability of the wastewater is improved, and the reaction efficiency can be improved; and set up tubaeform through-hole 10 on support ring 54, the through-hole 10 axis is perpendicular with connecting rod 55 for waste water is gathered when passing through, thereby the resistance that reduces waste water and pass through that can be better from through-hole 10, improves the mobility of waste water, makes ozone and waste water intensive mixing, thereby can improve reaction efficiency.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A coal chemical industry wastewater advanced treatment CoSD reaction tower comprises a reaction tower body (1) and a separation tower (2), wherein a sewage inlet (11) is formed in the upper end of the reaction tower body (1), and a vertical ozone pipe (3) is arranged on the bottom surface in the reaction tower body (1); the lower surface of the reaction tower body (1) is provided with an ozone booster pump; the upper end of one side of the reaction tower body (1) is provided with a first feeding port (12); the upper end of the separation tower (2) is connected with one side of the reaction tower body (1) through a water guide pipe; the method is characterized in that: the ozone generator is characterized by further comprising a spiral pipe (4) and a swing module (5), wherein the spiral pipe (4) is elastic and arranged on the ozone pipe (3), two ends of the spiral pipe (4) are communicated with the inside of the ozone pipe (3), and air outlet holes are uniformly distributed in the spiral pipe (4); the swing module (5) comprises a slide block (51), a gear (52), a swing rod (53) and a support ring (54), wherein the slide block (51) is arranged inside the ozone pipe (3); straight teeth are arranged on two sides of the sliding block (51), and the sliding block (51) is used for driving the gear (52) to rotate; the gear (52) is arranged on the inner wall of the ozone tube (3), and one side of the gear (52) is fixedly connected with one end of the swinging rod (53); the other end of the swinging rod (53) is provided with a supporting ring (54); the support ring (54) is sleeved on the spiral pipe (4);
the swing rod (53) is connected with the support ring (54) through a connecting rod (55); one end of the connecting rod (55) is hinged to the swinging rod (53), and the other end of the connecting rod (55) is fixedly connected to the supporting ring (54);
the support ring (54) consists of a middle ring (6) and two side rings (7), the side rings (7) are respectively positioned at two sides of the middle ring (6), and the side rings (7) are connected with the middle ring (6) through elastic elements;
the elastic element is a spring or an arc-shaped elastic plate (8); the arc-shaped elastic plate (8) protrudes towards the inner side of the spiral pipe (4);
a fillet (9) is arranged at the contact side of the side ring (7) and the spiral pipe (4);
the support ring (54) is provided with a trumpet-shaped through hole (10).
2. The coal chemical industry wastewater advanced treatment CoSD reaction tower according to claim 1, characterized in that: the axis of the through hole (10) is vertical to the connecting rod (55).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810820383.5A CN108946914B (en) | 2018-07-24 | 2018-07-24 | Coal chemical industry advanced wastewater treatment CoSD reaction tower |
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| CN201810820383.5A CN108946914B (en) | 2018-07-24 | 2018-07-24 | Coal chemical industry advanced wastewater treatment CoSD reaction tower |
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| CN115520953A (en) * | 2022-06-28 | 2022-12-27 | 胡长龙 | Coal chemical industry advanced wastewater treatment CoSD reaction tower |
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| CN206014451U (en) * | 2016-08-15 | 2017-03-15 | 李恩屹 | A kind of high efficiency air float machine of quick process |
| CN107364960A (en) * | 2017-08-29 | 2017-11-21 | 湖南中本智能科技发展有限公司 | A kind of rotary sanitary sewage aeration mechanism |
| CN107364947B (en) * | 2017-08-31 | 2020-12-11 | 山东丰硕建筑劳务有限公司 | Low-cost coal chemical industry advanced wastewater treatment CoSD reaction tower |
| CN107746106A (en) * | 2017-11-25 | 2018-03-02 | 深圳市娅安科技有限公司 | A kind of high efficient aeration pond for being used to handle sanitary sewage |
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Denomination of invention: A CoSD reactor for advanced treatment of coal chemical wastewater Effective date of registration: 20231219 Granted publication date: 20210924 Pledgee: Benxi Branch of Guangfa Bank Co.,Ltd. Pledgor: Liaoning Donghao Chemical Co.,Ltd. Registration number: Y2023210000349 |
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