CN112250258A - Treatment system for coal chemical industry mixed wastewater - Google Patents
Treatment system for coal chemical industry mixed wastewater Download PDFInfo
- Publication number
- CN112250258A CN112250258A CN202011159698.3A CN202011159698A CN112250258A CN 112250258 A CN112250258 A CN 112250258A CN 202011159698 A CN202011159698 A CN 202011159698A CN 112250258 A CN112250258 A CN 112250258A
- Authority
- CN
- China
- Prior art keywords
- tank
- wastewater
- chemical industry
- coal chemical
- mixed wastewater
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- 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
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
-
- 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
- C02F3/30—Aerobic and anaerobic processes
Landscapes
- 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention relates to a treatment system for coal chemical industry mixed wastewater. The system comprises an inclined tube sedimentation tank, a pretreatment system, a UASB reaction system, an A/O system, an activated sludge tank and a sedimentation tank; wherein the inclined tube sedimentation tank, the pretreatment system, the UASB reaction system, the A/O system, the activated sludge tank and the sedimentation tank are connected in sequence; the pretreatment system comprises a homogenizing pool, a pH neutralization pool and a middle water pool; the A/O system comprises a denitrification tank and an aerobic nitrification tank. The treatment system for the coal chemical industry mixed wastewater can carry out uniform mixed treatment on the coal chemical industry wastewater, the organic wastewater and the nitrogen fertilizer wastewater generated in the production process. The problems of unstable final wastewater parameters (namely large fluctuation of ammonia nitrogen and COD), heavy peculiar smell of a wastewater treatment site and the like are solved. The final wastewater can reach a stable target: the ammonia nitrogen is less than or equal to 0.8mg/L, and the COD is less than or equal to 78mg/L, so that the harm to operators and the environment is reduced.
Description
Technical Field
The invention belongs to the field of water treatment, and particularly relates to a treatment system for mixed wastewater in coal chemical industry.
Background
At present, the requirement of the country on environmental protection is increasingly promoted, more and more enterprises begin to increase the strength of self-treatment of wastewater discharged by production, however, the traditional wastewater treatment only can treat a single wastewater type, such as organic wastewater, nitrogen fertilizer wastewater or coal chemical wastewater. This causes related enterprises to have to separately establish wastewater treatment systems for different types of wastewater, which inevitably increases land usage area, labor cost and equipment quantity cost, is not favorable for integration of resources, and brings additional economic expenditure to the enterprises.
Therefore, the scheme of the invention is provided on the basis of the method.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a treatment system for mixed wastewater in coal chemical industry. The treatment system for the coal chemical industry mixed wastewater can carry out uniform mixed treatment on the coal chemical industry wastewater, the organic wastewater and the nitrogen fertilizer wastewater generated in the production process. The problems of unstable final wastewater parameters (namely large fluctuation of ammonia nitrogen and COD), heavy peculiar smell of a wastewater treatment site and the like are solved. The final wastewater can reach a stable target: the ammonia nitrogen is less than or equal to 0.8mg/L, and the COD is less than or equal to 78mg/L, so that the harm to operators and the environment is reduced.
The scheme of the invention is to provide a treatment system of coal chemical industry mixed wastewater, which is characterized by comprising an inclined tube sedimentation tank, a pretreatment system, a UASB reaction system, an A/O system, an activated sludge tank and a sedimentation tank; wherein the inclined tube sedimentation tank, the pretreatment system, the UASB reaction system, the A/O system, the activated sludge tank and the sedimentation tank are connected in sequence; the pretreatment system comprises a homogenizing pool, a pH neutralization pool and a middle water pool; the A/O system comprises a denitrification tank and an aerobic nitrification tank.
In order to facilitate understanding of the technical scheme of the invention, the working principle of the treatment system of the coal chemical industry mixed wastewater is further explained:
firstly, coal chemical industry wastewater generated in the production process enters the inclined tube sedimentation tank through metering, a flocculating agent (added with polyacrylamide with the addition concentration of 9-12 ppm) is proportioned according to the weight of the entering coal chemical industry wastewater, the flocculating agent and suspended matters, cyanides and sulfides contained in the coal chemical industry wastewater form stable floccules and then automatically sediment by using gravity, and supernatant is introduced into a homogenizing tank in the pretreatment system through a power pump after ammonia nitrogen and COD (chemical oxygen demand) detection.
Secondly, when the supernatant enters a homogenizing tank, the organic wastewater and the nitrogen fertilizer wastewater are introduced together for mixing. The homogenizing tank mainly plays a role in uniformly mixing and also has the functions of regulating water quantity, balancing water quality, cooling and distributing oxygen; then the mixed wastewater enters a pH neutralization tank to adjust and stabilize the pH value, and preparation is made for the next microbial fermentation; and the mixed wastewater continuously enters the intermediate water tank to buffer, store and increase nutrition, and enters the UASB reaction system after the parameters of the mixed wastewater are stable.
And thirdly, the mixed wastewater is introduced into the bottom of the UASB reaction system, the water flow upwards flows through a sludge bed, a sludge suspension layer to a three-phase separator and a settling zone according to a certain flow velocity, the water flow in the UASB reactor is in a plug flow form, the mixed wastewater is fully mixed and contacted with microorganisms in the sludge bed and the sludge suspension layer and is subjected to anaerobic decomposition, a large amount of methane is generated, the methane lifts sludge particles in the rising process, the sludge bed is obviously expanded, the stirring action generated by rising of bubbles becomes more and more severe along with the continuous increase of the gas production rate of the reactor, so that the resistance of the bubbles carried in the sludge is reduced, and the gas is suddenly escaped from the sludge bed to cause the surface of the sludge bed to be in a boiling and fluidized state. Flocculent sludge with poor settling property in the reactor forms a sludge suspension layer on the upper part of the reactor under the stirring action of gas, granular sludge with good settling property is positioned on the lower part of the reactor to form a high-concentration sludge bed, a gas-water-sludge three-phase mixed solution rises into the three-phase separator along with the rising flow of water flow, and the gas is folded to a gas collection chamber after encountering a reflective baffle plate and is effectively separated and discharged; and the sludge and water enter the static settling zone at the upper part, the sludge and the water are separated under the action of gravity, the sludge falls back to a sludge layer, and the supernatant is discharged into subsequent equipment through a water collecting weir.
Then, the supernatant enters a denitrification tank (A tank to generate anaerobic reaction), meanwhile, nitrobacteria are added, most of COD pollutants in the mixed wastewater after anaerobic treatment are removed, but the ammonia nitrogen concentration is not changed, and even the COD pollutants are improved due to the ammoniation of organic nitrogen; then, the mixed wastewater enters an aerobic nitrification tank (O tank), SG1001 efficient nitrifying bacteria are inoculated under the conventional aerobic biochemical condition, the aerobic nitrification denitrification effect is enhanced, the ammonia nitrogen is nitrified into nitrate and nitrite, and the sludge in the sedimentation tank flows back to the nitrification tank. Under the anoxic condition, the denitrifying bacteria utilize the organic matters in the anaerobic effluent as carbon source and the nitro nitrogen in the reflux nitrifying liquid to perform denitrification reaction, thereby further reducing the concentration of the organic matters and the total nitrogen in the wastewater.
Then, the mixed sewage flowing out of the A/O system enters the activated sludge tank, and the sewage and various microorganism populations are continuously mixed and cultured under the condition of oxygenation to form activated sludge. The biological coagulation, adsorption and oxidation of the activated sludge are utilized to decompose and remove organic matters in the sewage.
And finally, separating the sludge from water in a sedimentation tank, wherein the water can be discharged after reaching the standard through detection, and the sludge can be dried and then transported outside.
Preferably, two baffling walls are arranged in the homogenizing tank.
Preferably, an air aeration pipe is arranged in the homogenizing pool.
Preferably, the number of the air aeration pipes is 50-60.
Wherein, set up two sides baffling wall and 50 ~ 60 air aeration pipes in the homogeneity pond, can the intensive mixing waste water to the time of extension waste water dwell. Stirring air is provided by a Roots blower, and the air consumption is 580-620 m3/h。
Preferably, the pH neutralization tank is provided with a pH real-time monitoring device.
Preferably, the pH neutralization tank comprises a pH coarse adjustment tank and a pH fine adjustment tank which are arranged in series.
Preferably, the pH of the waste water in the pH fine adjustment tank is 5-7.
The pH neutralization tank adopts two-stage series connection, namely, in the pH coarse adjustment tank, the pH of the mixed wastewater is detected firstly, a detection signal can be transmitted into a main control DCS system, and the acid and alkali adding amount is controlled by changing the opening degree of a corresponding acid-base valve automatically by a main control or manually by an operator, so that the primary adjustment of the pH of the mixed wastewater is realized; similarly, in the pH fine adjustment tank, after the mixed wastewater with the primarily adjusted pH is detected, the pH value of the mixed wastewater is further accurately adjusted and stabilized at 5-7 under the control of the master control (the specific set value is related to the quality of inlet water, and the adjustment is mainly controlled according to the pH value of the effluent of the UASB).
Preferably, the A/O system is provided with a pH real-time monitoring device and a dissolved oxygen real-time monitoring device.
Wherein, the pH value of the O pool can be reduced in the nitration process, the pH value and the dissolved oxygen of the O pool are monitored by a pH real-time monitoring device and a dissolved oxygen real-time monitoring device, the pH value is controlled to be about 7.5-8.5, and the dissolved oxygen is controlled to be about 2-6 mg/L, so that the O pool is in a normal range.
Preferably, the treatment system for the coal chemical industry mixed wastewater further comprises a sludge concentration tank; the sludge concentration tank is respectively connected with the inclined tube sedimentation tank, the pretreatment system, the UASB reaction system, the A/O system, the activated sludge tank and the sedimentation tank.
Preferably, the treatment system for the coal chemical industry mixed wastewater further comprises a sludge dewatering machine; the sludge dewatering machine is connected with the sludge concentration tank.
Wherein, in the reaction of each stage, corresponding sediment or sediment is generated, and the efficiency of each stage of reaction is improved by carrying out centralized and unified collection and treatment on the sediment or sediment, so the sludge concentration tank is arranged. In pipe chute sedimentation tank, pretreatment systems, UASB reaction system, AO system, activated sludge pond and sedimentation tank, all can produce corresponding silt and deposit, silt deposit through the mud pump unified collect in the mud thickening jar carries out gravity concentration, can isolate most space water in the mud. Discharging the light phase with high void water content to a filtrate tank through a clear liquid discharge valve of the sludge concentration tank; heavy-phase sludge with the water content of 94-98% is cut into long fibers by a sludge cutting machine, the long fibers are sent out by a sludge feeding pump, and are mixed with 0.1% PAM to generate alum flocs which enter a sludge dewatering machine, and a centrifugal machine can separate adsorption water and capillary water in the sludge, wherein the adsorption water and the capillary water account for 15-25% of the total water content in the sludge.
The invention has the beneficial effects that:
the treatment system for the coal chemical industry mixed wastewater can mix and treat the coal chemical industry wastewater, the organic wastewater and the nitrogen fertilizer wastewater uniformly, and solves the problems of unstable final wastewater parameters (namely large ammonia nitrogen and COD fluctuation), heavy peculiar smell in a wastewater treatment site and the like. The final wastewater can reach a stable target: the ammonia nitrogen is less than or equal to 0.8mg/L, and the COD is less than or equal to 78mg/L, so that the harm to operators and the environment is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a process flow diagram of a treatment system for coal chemical industry mixed wastewater according to the invention.
FIG. 2 is a pre-treatment system according to the present invention.
FIG. 3 is an A/O system according to the present invention.
Fig. 4 is a detected value of the COD content in the mixed wastewater obtained by the treatment of the treatment system for coal chemical industry mixed wastewater of the present invention during the period from 10 months in 2018 to 1 month in 2019.
FIG. 5 shows the measured values of the ammonia nitrogen content in the mixed wastewater obtained by the treatment of the treatment system for coal chemical industry mixed wastewater of the invention during the period from 10 months in 2018 to 1 month in 2019.
Reference numbers in the figures:
1-an inclined tube sedimentation tank; 2-a pretreatment system; 21-homogenizing pool; 22-pH neutralization tank; 23-an intermediate pool; 3-UASB reaction system; 4-A/O system; 41-a denitrification tank; 42-an aerobic nitrification tank; 5-an activated sludge tank; 6-a sedimentation tank; 7-sludge concentration tank; 8-sludge dewatering machine.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Examples
The embodiment provides a treatment system of coal chemical industry mixed wastewater, and with reference to fig. 1, the treatment system comprises an inclined tube sedimentation tank 1, a pretreatment system 2, a UASB reaction system 3, an A/O system 4, an activated sludge tank 5 and a sedimentation tank 6;
wherein the inclined tube sedimentation tank 1, the pretreatment system 2, the UASB reaction system 3, the A/O system 4, the activated sludge tank 5 and the sedimentation tank 6 are connected in sequence;
referring to fig. 2, the pretreatment system 2 includes a homogenizing tank 21, a pH neutralizing tank 22, and an intermediate water tank 23;
referring to fig. 3, the a/O system 4 includes a denitrification tank 41 and an aerobic nitrification tank 42.
As an alternative embodiment, two baffle walls are arranged in the homogenizing tank 21.
As an alternative embodiment, an air aeration pipe is arranged in the homogenizing tank 21.
As an optional embodiment, the number of the air aeration pipes is 50-60.
As an alternative embodiment, the pH neutralization tank 22 is provided with a pH real-time monitoring device.
Referring to fig. 4, as an alternative embodiment, the pH neutralization tank 22 includes a pH rough adjustment tank and a pH fine adjustment tank which are arranged in series.
As an optional implementation mode, the pH of the waste water in the pH fine adjustment tank is 5-7.
As an alternative embodiment, the a/O system 4 is provided with a pH real-time monitoring device and a dissolved oxygen real-time monitoring device.
Referring to fig. 1, as an alternative embodiment, the treatment system for the coal chemical industry mixed wastewater further includes a sludge concentration tank 7; the sludge concentration tank 7 is respectively connected with the inclined tube sedimentation tank 1, the pretreatment system 2, the UASB reaction system 3, the A/O system 4, the activated sludge tank 5 and the sedimentation tank 6.
Referring to fig. 1, as an alternative embodiment, the treatment system for the coal chemical industry mixed wastewater further includes a sludge dewatering machine 8; the sludge dewatering machine 8 is connected with the sludge concentration tank 7.
In order to show the treatment effect of the treatment system for the mixed wastewater in the coal chemical industry, a detection test is carried out, and the test result is shown in table 1.
The detection method comprises the following steps: taking mixed wastewater at an inlet for detection, and then detecting the wastewater at a water outlet after timing sampling treatment.
TABLE 1 Water quality test results (mg/L)
From table 1, it can be seen: after the treatment system for the coal chemical industry mixed wastewater provided by the invention stably runs for 96 hours, the ammonia nitrogen and COD indexes of the wastewater at the water outlet meet the standards.
And as can be seen from the attached figure 4, the COD of the treated water outlet wastewater is always maintained at 20-62 mg/L from 10 months in 2018 to 1 month in 2019, so that the treated water outlet wastewater reaches a good treatment standard.
As can be seen from the attached figure 5, in the period from 10 months to 1 month in 2019 in 2018, the ammonia nitrogen of the treated water outlet wastewater is always maintained at 0.05-0.8 mg/L (only one group of data has higher fluctuation, and reaches 1.4mg/L), and the good treatment standard is also achieved.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A treatment system for mixed wastewater in coal chemical industry is characterized by comprising an inclined tube sedimentation tank (1), a pretreatment system (2), a UASB reaction system (3), an A/O system (4), an activated sludge tank (5) and a sedimentation tank (6);
wherein the inclined tube sedimentation tank (1), the pretreatment system (2), the UASB reaction system (3), the A/O system (4), the activated sludge tank (5) and the sedimentation tank (6) are connected in sequence;
the pretreatment system (2) comprises a homogenizing pool (21), a pH neutralization pool (22) and an intermediate water pool (23);
the A/O system (4) comprises a denitrification tank (41) and an aerobic nitrification tank (42).
2. The system for treating the mixed wastewater in the coal chemical industry as defined in claim 1, wherein two baffle walls are disposed in the homogenizing tank (21).
3. The system for treating the coal chemical industry mixed wastewater as defined in claim 1, wherein an air aeration pipe is provided in the homogenizing tank (21).
4. The system for treating the coal chemical industry mixed wastewater as defined in claim 3, wherein the number of the air aeration pipes is 50-60.
5. The system for treating the coal chemical industry mixed wastewater as defined in claim 1, wherein the pH neutralization tank (22) is provided with a pH real-time monitoring device.
6. The system for treating the coal chemical industry mixed wastewater as defined in claim 5, wherein the pH neutralization tank (22) comprises a pH rough adjustment tank and a pH fine adjustment tank which are arranged in series.
7. The system for treating the coal chemical industry mixed wastewater as defined in claim 6, wherein the pH of the wastewater inside the pH fine adjustment tank is 5-7.
8. The treatment system for the mixed wastewater in the coal chemical industry according to claim 1, wherein the A/O system (4) is provided with a pH real-time monitoring device and a dissolved oxygen real-time monitoring device.
9. The system for treating the mixed wastewater in the coal chemical industry according to claim 1, further comprising a sludge thickening tank (7); the sludge concentration tank (7) is respectively connected with the inclined tube sedimentation tank (1), the pretreatment system (2), the UASB reaction system (3), the A/O system (4), the activated sludge tank (5) and the sedimentation tank (6).
10. The system for treating the mixed wastewater in the coal chemical industry according to claim 9, further comprising a sludge dewatering machine (8); the sludge dewatering machine (8) is connected with the sludge concentration tank (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011159698.3A CN112250258A (en) | 2020-10-26 | 2020-10-26 | Treatment system for coal chemical industry mixed wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011159698.3A CN112250258A (en) | 2020-10-26 | 2020-10-26 | Treatment system for coal chemical industry mixed wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112250258A true CN112250258A (en) | 2021-01-22 |
Family
ID=74262651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011159698.3A Pending CN112250258A (en) | 2020-10-26 | 2020-10-26 | Treatment system for coal chemical industry mixed wastewater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112250258A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115040990A (en) * | 2022-07-04 | 2022-09-13 | 云南水富云天化有限公司 | Driving force lifting control device between sections of low-temperature methanol washing tower |
| CN115155253A (en) * | 2022-07-04 | 2022-10-11 | 云南水富云天化有限公司 | Automatic control system for carbon dioxide content of coal-to-methanol synthesis gas |
-
2020
- 2020-10-26 CN CN202011159698.3A patent/CN112250258A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115040990A (en) * | 2022-07-04 | 2022-09-13 | 云南水富云天化有限公司 | Driving force lifting control device between sections of low-temperature methanol washing tower |
| CN115155253A (en) * | 2022-07-04 | 2022-10-11 | 云南水富云天化有限公司 | Automatic control system for carbon dioxide content of coal-to-methanol synthesis gas |
| CN115040990B (en) * | 2022-07-04 | 2023-05-23 | 云南水富云天化有限公司 | Thrust lifting control device between low-temperature methanol washing tower sections |
| CN115155253B (en) * | 2022-07-04 | 2023-05-26 | 云南水富云天化有限公司 | Automatic control system for carbon dioxide content of coal-to-methanol synthesis gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104003522B (en) | A kind of modified segmental influent multistage A/O denitrification system | |
| CN106430845A (en) | Kitchen garbage wastewater treatment apparatus | |
| CN109205954A (en) | Light electrolysis catalysis oxidation, biochemical treatment high-concentration waste hydraulic art | |
| CN114291964B (en) | Sewage treatment system and method for denitrification and phosphorus recovery | |
| CN101781056B (en) | Treatment method of waste papermaking water | |
| CN112250258A (en) | Treatment system for coal chemical industry mixed wastewater | |
| CN1331780C (en) | Integrative bioreactor for treating refuse leachate | |
| CN103449659A (en) | Novel partial nitrification-denitrification biological nitrogen removal device | |
| CN108191159B (en) | Kitchen garbage waste water non-membrane method processing system | |
| CN111003816B (en) | Biochemical tail water biological denitrification method for inhibiting non-filamentous bacterium expansion | |
| CN112978922A (en) | Efficient pulse water distribution anaerobic sludge denitrification reaction method and device | |
| CN110697893B (en) | Upflow type hydrolysis aerobic denitrification process for high ammonia nitrogen wastewater with poor biodegradability | |
| CN108178454B (en) | Non-membrane treatment method for kitchen waste wastewater | |
| CN107986443B (en) | Whole-course autotrophic nitrogen removal method suitable for sewage with large COD/N fluctuation | |
| CN213652202U (en) | Treatment system for coal chemical industry mixed wastewater | |
| CN216377647U (en) | High-efficient pulse water distribution anaerobism sludge denitrification reaction unit | |
| CN108975607B (en) | Method for coupling treatment of sludge digestion liquid and urban domestic sewage by using SNAD as core technology | |
| CN109081452B (en) | Sequencing batch sewage treatment device and process with immobilized carrier biological membrane and activated sludge coupled | |
| CN207792993U (en) | A kind of pretreatment system of kitchen garbage, waste-water | |
| CN207792815U (en) | A kind of kitchen garbage, waste-water biochemical treatment system | |
| CN208345854U (en) | The novel nitrogenous petrochemical wastewater processing unit of height | |
| CN112624500A (en) | Kitchen waste sewage treatment system and method | |
| Hanafy et al. | Upgrading conventional activated sludge system using bio-media: a case study of Zenin wastewater treatment plant, Egypt | |
| CN112093974B (en) | Efficient biochemical treatment system and method for phosphorus-containing latex wastewater by using composite microbial inoculum | |
| CN212293234U (en) | Easily-degradable high-concentration industrial wastewater treatment system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |