WO2016188326A1 - Procédé de traitement et de recyclage régénératif des eaux usées issues de la production de semi-coke - Google Patents

Procédé de traitement et de recyclage régénératif des eaux usées issues de la production de semi-coke Download PDF

Info

Publication number
WO2016188326A1
WO2016188326A1 PCT/CN2016/081777 CN2016081777W WO2016188326A1 WO 2016188326 A1 WO2016188326 A1 WO 2016188326A1 CN 2016081777 W CN2016081777 W CN 2016081777W WO 2016188326 A1 WO2016188326 A1 WO 2016188326A1
Authority
WO
WIPO (PCT)
Prior art keywords
waste water
treatment
membrane
blue carbon
wastewater
Prior art date
Application number
PCT/CN2016/081777
Other languages
English (en)
Chinese (zh)
Inventor
张世文
Original Assignee
波鹰(厦门)科技有限公司
张世文
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 波鹰(厦门)科技有限公司, 张世文 filed Critical 波鹰(厦门)科技有限公司
Publication of WO2016188326A1 publication Critical patent/WO2016188326A1/fr

Links

Definitions

  • the invention belongs to the field of water pollution control of environmental engineering, and more specifically refers to a method for treating and recycling recycling of blue carbon waste water.
  • Blue carbon also known as semi-coke, coke powder, is an important raw material for iron alloy, coal gas, coal chemical production, and is obtained from low temperature dry distillation (about 650 °C). Blue carbon production and gas purification process will produce waste water, which is called blue carbon waste water. It is an industrial wastewater with complex composition, high concentration of pollutants, stable nature, poor biodegradability and great treatment.
  • the inorganic pollutants in the blue carbon waste water mainly include sulfides, cyanide, ammonia nitrogen and thiocyanide.
  • the organic pollutants are mainly coal tars, and the content of phenolic compounds is high. In addition, it contains polycyclic aromatics. a compound and a heterocyclic compound containing nitrogen, sulfur and oxygen.
  • the blue carbon waste water is completely different from the coking wastewater. See Table 1 for comparison of the main pollutants of the blue carbon waste water and coking wastewater. From the comparison of Table 1 and Table 2, it can be seen that the main pollutant index of the blue carbon wastewater is ten times that of the coking wastewater. Therefore, although there are many treatment methods for coking wastewater, the treatment method is not suitable for blue carbon wastewater. At present, there is no mature method for the treatment of blue carbon waste water, and its treatment method and comprehensive utilization of its main components are very urgent. He Bin and Wang Yazhen reported on the treatment of blue carbon wastewater by ammonia-dephenol-SBR treatment in the 36th issue of Guangxi Chemical Industry; Yang Yipu et al. introduced the blue carbon in the 12th issue of Environmental Engineering Journal. The effect of extraction and recovery of phenolic substances in wastewater is only a solution to the problem of blue carbon wastewater. Although there are many reports on the treatment of blue carbon wastewater, there is no perfect and mature Lancan wastewater treatment method.
  • Table 1 Main pollutants indicators of blue carbon wastewater and coking wastewater Serial number Major pollutant Blue carbon wastewater Coking wastewater 1 COD (mg/L) 10000 ⁇ 75000 3500 ⁇ 5000 2 BOD (mg/L) 3000 ⁇ 5000 1170 ⁇ 2000 3 pH 8 ⁇ 10 8 ⁇ 9 4 Tar (mg/L) 5000 ⁇ 40000 100 ⁇ 200 5 Ammonia nitrogen (mg/L) 500 ⁇ 5000 200 ⁇ 400 6 Total phenol (mg/L) 1000 ⁇ 6000 600 ⁇ 800 7 Chromaticity (times) 10000 ⁇ 30000 1000 ⁇ 1500
  • the water quality characteristics of the blue carbon wastewater determine its complex hazard. For example, ammonia nitrogen, phenolic compounds and aromatic compounds contained in it pose a huge threat to the ecological environment. In addition, industrial by-products such as coal tar, ammonia, and phenol in blue carbon waste water have the value of recycling.
  • the invention provides a blue carbon waste water treatment and regeneration recycling utilization method, and the main purpose thereof is to overcome the shortcomings of the prior art that the blue carbon waste water treatment depth is insufficient.
  • a blue carbon waste water treatment and regeneration recycling device and method comprising the following steps:
  • Crude filtration blue carbon wastewater with COD of 10000 to 75000 mg/L, ammonia nitrogen of 500 to 5000 mg/L, total phenol of 1000 to 6000 mg/L, color of 10,000 to 30,000 times, and pH of 8 to 10. Filtration through a grid or screen to remove large particles;
  • Step (2) is filtered through a membrane to obtain a concentrated solution rich in coal tar, which is subjected to gravity sedimentation separation or centrifugal separation to obtain de-tarred blue carbon waste water, and the COD removal rate thereof is 30 to 55%;
  • Desulfurization adding desulfurization agent, such as ferrous sulfate, to the deaminated blue carbon wastewater after step (5) deamination of nitrogen to form iron sulfide precipitation and desulfurization blue carbon waste water, the COD removal rate is 10-20%, preventing Sulfide poisoning to biochemistry, improve its biochemical effects;
  • desulfurization agent such as ferrous sulfate
  • Anaerobic treatment the desulfurized blue carbon waste water obtained by desulfurization in step (6) is added to an alkali solution to adjust the pH to 6-9, and enters the anaerobic tank through the lift pump, and passes through the anaerobic and anaerobic bacteria in the anaerobic tank.
  • the adsorption, fermentation and methanogenesis work together to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater and remove most of the COD by anaerobic treatment, and improve the biodegradability of the wastewater;
  • Aerobic treatment after step (7) anaerobic treatment, the blue carbon waste water passes through the lift pump into the aerobic tank and the intermediate sedimentation tank, and part of the sludge in the intermediate sedimentation tank is returned to the aerobic tank through the reflux pump, and the good
  • the oxygen treatment further oxidizes and decomposes the organic matter in the blue carbon waste water to deeply remove COD and BOD; the aerobic pool is uniformly filled with a large amount of biological suspended filler to provide a habitat for aerobic microorganisms to grow and reproduce, so that the microorganism forms a biofilm on the surface of the filler.
  • An aeration and oxygenation agitation system is arranged at the bottom of the aerobic tank to oxygenate the sewage to maintain the dissolved oxygen in the water at 2 to 4 mg/L, and at the same time, the action of the gas rises to make the suspended matter and water in the pool more Full contact, and the agitation action of gas and water backwashing can effectively wash the aged biofilm grown on the surface of the filler, promote the replacement of the biofilm, and maintain the high activity of the biofilm;
  • Electrolysis After the aerobic treatment in step (8), the blue carbon waste water enters the electrolysis machine for electrolysis to remove the chromaticity and odor, and at the same time, the difficult biochemical macromolecular compound in the wastewater is opened and broken, and becomes biochemical.
  • the small molecule further increases the B/C value and improves the conditions of the subsequent biochemical treatment; the voltage between the adjacent electrodes of the electrolysis machine is 2 to 12 V, and the current density is 10 to 320 mA/cm 2 ;
  • Step (10) The second anaerobic treated blue carbon wastewater enters the MBR treatment device or the aerated biological filter, and the wastewater is purified by filtration separation or biological oxidative degradation of the membrane treatment device to further remove COD, SS and ammonia nitrogen. Obtaining purified wastewater;
  • Step (11) The wastewater after MBR treatment or biological bioreactor biochemistry (BAF biochemical) enters the desalination device, and the dialysis water and concentrated water are separated, the dialysis water enters the reclaimed water storage tank, and the concentrated water passes through the drainage channel.
  • the effluent enters the evaporation crystallization tank for crystallization treatment; the desalination device may be one of a reverse osmosis system and a nanofiltration system.
  • the membrane filtration in the step (2) is one of ceramic membrane filtration or metal membrane filtration; the ceramic membrane element of the ceramic membrane filtration system has a pore diameter of 20 to 100 nm; the metal membrane element of the metal membrane filtration system has a pore diameter of 30 to 100 nm; and the working pressure It is 3 to 6 bar and the temperature is 15 to 55 °C.
  • the membrane tar obtained by the step (2) is all concentrated in the concentrate, the COD of the dialysate is about 5,000 to 34,000 mg/L, and the COD removal rate is 30 to 55%.
  • Step (2) Membrane Filtration
  • the membrane-filtered coal-rich tar-rich concentrate is pumped into a centrifuge and separated into coal tar and de-coke blue carbon wastewater by centrifugation; the centrifugal force of centrifugation is 2200-4000.
  • Step (3) De-tarding
  • the gravity sedimentation separation is performed by placing the membrane-filtered concentrated coal-rich tar into a gravity sedimentation tank and separating it into coal tar and de-coke blue carbon wastewater by gravity sedimentation.
  • Step (3) De-tar treatment not only realizes the recovery and utilization of coal tar in the blue carbon wastewater, but also reduces the COD of the wastewater by 30-55%, greatly reduces the chroma and ensures the subsequent production process.
  • the detarred oil according to the step (3) is an acid added to adjust the pH to 2 to 5, and the acid used is one of sulfuric acid, hydrochloric acid or nitric acid; most preferably sulfuric acid, and the amount is 5 to 7 kg/m 3 .
  • Step (4) Phenol Removal of the extractant used is kerosene, N, N '- dimethylheptyl acetamide (N, N' one kind -503), or tributyl phosphate, or benzol mixture;
  • Step (4) Phenol Removal optimum extractant employed for the 20-30% of N, N '- (-503 N , N) dimethylheptyl acetamide' kerosene mixture.
  • Step (4) Dephenolization
  • the preferred extractant used for the extraction is a mixture of 20-33% tributyl phosphate and kerosene.
  • the ratio of the extractant used in the step (4) dephenolization extraction to the blue carbon waste water is preferably 1:5, that is, 200 L of extractant per cubic meter of carbon waste water in Milan.
  • Electrolytic electrolysis machine is provided with a power source and an electrolytic cell, and the electrode materials in the electrolysis cell are graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert material. One of them.
  • the membrane module of the MBR device according to the step (11) is selected from the group consisting of a polyvinylidene fluoride hollow fiber membrane, a polypropylene hollow fiber membrane, a polysulfone hollow fiber membrane, a polyethersulfone, a polyacrylonitrile, and a polyvinyl chloride hollow fiber membrane.
  • a polyvinylidene fluoride hollow fiber membrane a polypropylene hollow fiber membrane
  • a polysulfone hollow fiber membrane a polyethersulfone
  • a polyacrylonitrile a polyvinyl chloride hollow fiber membrane.
  • One of them has a membrane pore diameter of 0.10 to 0.2 ⁇ m, a working pressure of -1 to -50 kPa, and an operating temperature of 5 to 45 ° C;
  • the reverse osmosis membrane module of the reverse osmosis system is a roll membrane module, and the membrane material is an acetate membrane or a composite membrane in an organic membrane.
  • the molecular weight cutoff of the membrane material is 50-200 MWCO, and the inlet pressure can be 6.0. ⁇ 45.0 bar, the pressure can be 4.5 ⁇ 33.5bar.
  • the nanofiltration membrane module in the nanofiltration system is a tubular membrane module, a membrane membrane module or a flat membrane module, and the working pressure is 6 to 45 bar, and the working temperature is 20 to 45 ° C. The optimum temperature is 35 to 40 °C.
  • Table 2 shows the removal effect of major pollution indicators project pH Chroma COD (mg/L) Total phenol (mg/L) Ammonia nitrogen (mg/L) Contaminant removal rate (%)
  • Raw water 8-10 10000-30000 10000-75000 1000-6000 500-5000 Coarse filtration 8-10 1000-3000 10000-75000 1000-6000 500-5000 Demulsification 2-6 1000 10000-75000 1000-6000 500-5000 Detarred oil 2-6 500 5000-34000 1000-6000 500-5000 COD30 ⁇ 55% Dephenolation 2-6 500 2000-19000 300-600 500-5000 COD35-70% Deamination 9-11 500 1500-4500 300-400 30-80 More than 99% ammonia nitrogen Desulfurization 7-8 300 1400-3800 80-200 30-80 COD10-20% Oxidation 7-8 200 1400-3800 10-70 20-60 Anaerobic treatment 7-8 150 350-950 5-20 5-40 More than 75% COD Aerobic 7-8 100 140-380 5-10 5-20 More than 60% COD Electrolytic treatment 7-8 20
  • the invention has the following advantages:
  • the tar in the blue carbon waste water is concentrated into the concentrated liquid through membrane filtration, which can reduce the volume of the blue carbon waste water by more than three times, saving equipment investment and reducing energy consumption. , greatly reducing production costs.
  • the dephenolized blue carbon waste water obtained by deamination can be removed by adjusting the pH and heating and evaporating, and 0.5 to 5 kg of ammonia can be recovered from each cubic wastewater to realize the recovery and utilization of ammonia.
  • Figure 1 is a process flow diagram of the present invention.
  • the invention is based on the composition, properties and existing treatment scheme of the blue carbon waste water, and designs a blue carbon waste water treatment and regeneration recycling method, which relates to membrane filtration, de-tarting, dephenolization, deamination, anaerobic treatment, aerobic treatment A combined treatment process of treatment, electrolysis, desalination, etc., thereby forming a method for effectively realizing the deep treatment and recycling of blue carbon waste water.
  • Crude filtration The crude carbon waste water with COD of 10000 mg/L, ammonia nitrogen of 500 mg/L, total phenol of 1000 mg/L, color of 10000 times and pH of 8 is coarsely filtered through a grid or sieve. Remove large particles and debris;
  • the membrane filtration is ceramic membrane filtration, and the ceramic membrane element of the ceramic membrane filtration system has a pore diameter of 30 nm; the working pressure is 3 to 6 bar, and the temperature is 15 to 55 °C.
  • step (2) is filtered through a membrane to obtain a concentrated solution rich in coal tar, and after gravity sedimentation for 24 hours, the recovered coal tar and detarred oil wastewater are separated.
  • the gravity sedimentation is that the concentrated carbon waste water concentrated by the membrane filtration in the step (2) is placed in a gravity sedimentation tank, and separated into an upper layer of coal tar and a lower layer of decoking wastewater by gravity sedimentation, and the upper layer of coal tar is passed through The recovery pipe recovered 3 kg/m 3 of coal tar.
  • the degassed oil has a COD of 7213 mg/L, an ammonia nitrogen of 521 mg/L, a total phenol of 1103 mg/L, and a color of 500 times.
  • the extractant used is extracted N, N '- (-503 N , N) dimethylheptyl acetamide' kerosene mixture.
  • the dephenolized wastewater has a COD of 2932 mg/L, an ammonia nitrogen of 532 mg/L, a total phenol of 103 mg/L, and a color of 500 times.
  • Deamination nitrogen The blue carbon waste water obtained by removing the phenol from the step (4) is added to the alkali solution to adjust the pH to 11, and the ammonia gas is removed by heating and evaporation, and the ammonia gas is absorbed by the sulfuric acid solution to produce ammonium sulfate or cooled to obtain liquid ammonia and Deammonia blue carbon wastewater.
  • the pollutant index of the decarbonized blue carbon waste water is: COD is 1913 mg / L, ammonia nitrogen is 65.1 mg / L, total phenol is 213.4 mg / L, and the color is 500 times.
  • Desulfurization adding desulfurization agent, such as ferrous sulfate, to the deaminated carbon waste water after step (5) deamination of nitrogen to form iron sulfide precipitation and desulfurization of blue carbon waste water, preventing the poisoning of the sulfide by biochemistry and improving its biochemical effect.
  • desulfurization agent such as ferrous sulfate
  • the pollutant index of the desulfurized blue carbon waste water is: COD is 1554.92 mg/L, ammonia nitrogen is 49 mg/L, total phenol is 210 mg/L, and chroma is 200 times.
  • Anaerobic treatment the desulfurized blue carbon waste water obtained by desulfurization in step (6) is added to an alkali solution to adjust the pH to 6-9, and enters the anaerobic tank through the lift pump, and passes through the anaerobic and anaerobic bacteria in the anaerobic tank.
  • the adsorption, fermentation and methanogenesis work together to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater and remove most of the COD by anaerobic treatment, and improve the biodegradability of the wastewater.
  • the pollutant index of the anaerobic treated blue carbon waste water is: COD is 403 mg/L, ammonia nitrogen is 51 mg/L, total phenol is 11 mg/L, and chroma is 150 times.
  • the blue carbon waste water passes through the lift pump into the aerobic tank and the intermediate sedimentation tank, and part of the sludge in the intermediate sedimentation tank is returned to the aerobic tank through the reflux pump, and is treated by aerobic treatment. Further oxidize and decompose organic matter in the blue carbon waste water to deeply remove COD and BOD; the aerobic pool is uniformly filled with a large amount of biological suspended filler to provide a habitat for aerobic microorganisms to grow and reproduce, so that microorganisms form a biofilm on the surface of the filler.
  • the aerobic tank is equipped with an aeration and oxygenation agitation system to oxygenate the sewage to maintain the dissolved oxygen in the water at 2 to 4 mg/L.
  • the gas is used to make the suspended solids in the pool more fully contact with the water.
  • the aged biofilm grown on the surface of the filler can be effectively washed, and the biofilm is replaced, so that the biofilm maintains high activity.
  • the pollutant index of the aerobic treated blue carbon waste water is: COD is 320 mg/L, ammonia nitrogen is 11 mg/L, total phenol is 1 mg/L, and chromaticity is 100 times.
  • Step (8) After the aerobic treatment, the blue carbon waste water enters the electrolysis machine for electrolysis to remove the color and smell, and at the same time, the difficult biochemical macromolecular compound in the wastewater is opened and broken, and becomes biochemically small.
  • the molecule further increases the B/C value and improves the conditions of the subsequent biochemical treatment; the voltage between the adjacent electrodes of the electrolysis machine is 2 to 12 V, and the current density is 10 to 320 mA/cm 2 ;
  • the electrolyzer is provided with a power source and an electrolytic cell, and the electrode material in the electrolytic cell is one of graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert material. .
  • the step (9 blue carbon waste water obtained by electrolysis enters the secondary anaerobic tank through the lift pump, and the anaerobic bacteria, anaerobic bacteria adsorption, fermentation, and methanogenesis in the anaerobic tank will work together.
  • the organic acid is decomposed into methane and carbon dioxide, and the B/C value of the wastewater is increased by anaerobic treatment and further COD is further removed to improve the biodegradability of the wastewater.
  • the pollutant index of the secondary anaerobic treatment of blue carbon waste water is: COD is 80.2 mg/L, ammonia nitrogen is 16 mg/L, total phenol is 1 mg/L, and color is 150 times.
  • the desalination device is a nanofiltration system.
  • the nanofiltration membrane module in the nanofiltration system is a tubular membrane module, a coil membrane module or a flat membrane module, and the working pressure is 6 to 45 bar, the working temperature is 20 to 45 ° C, and the optimal temperature is 35. ⁇ 40 ° C.
  • Crude filtration The crude carbon waste water with a COD of 34967 mg/L, an ammonia nitrogen of 1911 mg/L, a total phenol of 6231 mg/L, a chromaticity of 2000 times, and a pH of 8.1 was coarsely filtered through a grid or a sieve. Remove large particles and debris;
  • the membrane filtration is ceramic membrane filtration, and the ceramic membrane element of the ceramic membrane filtration system has a pore diameter of 20 to 100 nm, a working pressure of 3 to 6 bar, and a temperature of 15 to 55 °C.
  • the dialysate obtained by the membrane filtration has a COD of 9800 to 11500 mg/L.
  • step (2) is filtered through a membrane to obtain a concentrated coal-rich tar, which is subjected to centrifugal separation, the lower layer of coal tar and the upper layer of decoking wastewater, and the lower layer of coal tar is recovered to obtain coal tar of 17.6 kg/m. 3 .
  • the centrifugal force for centrifugation was 3219.
  • the extractant used is extracted N, N '- (-503 N , N) dimethylheptyl acetamide' kerosene mixture.
  • the pollutant index of the dephenolized blue carbon waste water is: COD is 4905 mg/L, ammonia nitrogen is 2211 mg/L, total phenol is 339 mg/L, and chroma is 500 times.
  • step (4) The blue carbon waste water after the dephenolization in step (4) is added to the potassium hydroxide solution to adjust the pH to 10, and the ammonia gas is removed by heating and evaporation, and the ammonia gas is absorbed by the sulfuric acid solution to produce ammonium sulfate.
  • the pollutant index of the decarbonized blue carbon waste water is: COD is 1745.36 mg / L, ammonia nitrogen is 46.4 mg / L, total phenol is 207 mg / L, and the chromaticity is 500 times.
  • Desulfurization adding desulfurizing agent, such as ferrous sulfate, to the deaminated carbon waste water after step (5) deamination of nitrogen to form iron sulfide precipitated and desulfurized blue carbon waste water, preventing sulfide poisoning to biochemistry and improving its biochemical effect.
  • desulfurizing agent such as ferrous sulfate
  • the pollutant index of the blue carbon waste water after desulfurization is: COD is 1455.36mg/L, ammonia nitrogen is 47.4mg/L, total phenol is 192mg/L, and chroma is 200 times.
  • Anaerobic treatment the desulfurized carbon waste water obtained by the step (6) desulfurization is added to the alkali solution to adjust the pH to 6-9, and the anaerobic tank enters the anaerobic tank through the lift pump, and passes through the anaerobic and anaerobic bacteria in the anaerobic tank.
  • Adsorption, fermentation, and methanogenesis work together to decompose organic acids into methane and carbon dioxide, improve the B/C value of wastewater and remove most of the COD by anaerobic treatment, and improve the biodegradability of wastewater.
  • the pollutant index of the blue carbon waste water after the anaerobic treatment is: COD is 436.34 mg / L, ammonia nitrogen is 13.4 mg / L, total phenol is 207 mg / L, and the chromaticity is 500 times.
  • Aerobic treatment after step (7) anaerobic treatment, the blue carbon waste water passes through the lift pump into the aerobic tank and the intermediate sedimentation tank, and part of the sludge in the intermediate sedimentation tank is returned to the aerobic tank through the reflux pump, and the good
  • the oxygen treatment further oxidizes and decomposes the organic matter in the blue carbon waste water to deeply remove COD and BOD; the aerobic pool is uniformly filled with a large amount of biological suspended filler to provide a habitat for aerobic microorganisms to grow and reproduce, so that the microorganism forms a biofilm on the surface of the filler.
  • An aerated oxygenation and agitation system is arranged at the bottom of the aerobic tank to oxygenate the sewage to maintain the dissolved oxygen in the water at 2 to 4 mg/L, and at the same time, the gas is used to increase the suspended matter and water in the pool.
  • Contact in addition to the agitation of gas and water backwashing, can effectively scouring the aged biofilm grown on the surface of the filler, promoting the replacement of the biofilm, so that the biofilm maintains high activity.
  • the pollutant index of the blue carbon waste water after the aerobic treatment is: COD is 174.54 mg/L, ammonia nitrogen is 9.4 mg/L, total phenol is 7 mg/L, and chromaticity is 80 times.
  • Electrolysis After the step (8), the blue carbon waste water enters the electrolysis machine for electrolysis to remove the chromaticity and odor, and at the same time, the difficult biochemical macromolecular compound in the waste water is opened and broken, and becomes biochemically small.
  • the molecule further increases the B/C value and improves the conditions of the subsequent biochemical treatment; the voltage between the adjacent electrodes of the electrolysis machine is 2 to 12 V, and the current density is 10 to 320 mA/cm 2 ;
  • the electrolyzer is provided with a power source and an electrolytic cell, and the electrode material in the electrolytic cell is one of graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert material. .
  • Anaerobic treatment the blue carbon waste water obtained by the electrolysis in step (9) is passed through a lift pump into a secondary anaerobic tank, and the anaerobic bacteria, anaerobic bacteria adsorption, fermentation, and methanogenesis are combined in the anaerobic tank.
  • the organic acid is decomposed into methane and carbon dioxide, and the B/C value of the wastewater is increased by anaerobic treatment and further COD is further removed to improve the biodegradability of the wastewater.
  • the pollutant index of the blue carbon waste water after the anaerobic treatment is: COD is 58.34 mg / L, ammonia nitrogen is 7.7 mg / L, total phenol is 1 mg / L, and the chromaticity is 20 times.
  • Step (10) The second anaerobic treated blue carbon wastewater enters the MBR treatment device, and the wastewater is purified by filtration separation of the MBR treatment device to further remove COD, SS and ammonia nitrogen to obtain purified wastewater;
  • Step (11) The wastewater after membrane treatment enters the desalting device, and the dialysis water and concentrated water are separated, and the dialysis water enters the reclaimed water storage tank, and the concentrated water is discharged into the evaporation crystallization tank through the drainage channel for crystallization treatment;
  • the desalination device may be a reverse osmosis system, and the yield of reclaimed water is 75%.
  • the reverse osmosis membrane module of the reverse osmosis system is a roll membrane module, and the membrane material is an acetate membrane or a composite membrane in an organic membrane.
  • the molecular weight cutoff of the membrane material is 50-200 MWCO, and the inlet pressure can be 6.0-45.0 bar. The pressure can be 4.5 to 33.5 bar.
  • Crude filtration The crude carbon waste water with COD of 29335 mg/L, ammonia nitrogen of 1500 mg/L, total phenol of 4100 mg/L, color of 19,000 times and pH of 8.1 is coarsely filtered through a grid or sieve. Remove large particles and debris;
  • the membrane filtration is ceramic membrane filtration, and the ceramic membrane element of the ceramic membrane filtration system has a pore diameter of 20 to 100 nm, a working pressure of 3 to 6 bar, and a temperature of 15 to 55 °C.
  • step (2) is subjected to membrane filtration to obtain a concentrated solution rich in coal tar, and the recovered coal tar and detarred oil wastewater are obtained;
  • the centrifugal separation is to pump the concentrated carbon waste water separated and concentrated by the membrane into a centrifuge, and then centrifuge to separate the lower coal tar and the upper decoking wastewater, and the lower coal tar is recovered through the recovery pipe; centrifugal force of centrifugal separation It is 3400.
  • the coal tar was recovered to obtain coal tar of 15.2 kg/m 3 .
  • the pollutant index of the blue carbon waste water after the recovery of the coal tar is: COD is 11494 mg/L, ammonia nitrogen is 1617 mg/L, total phenol is 4239 mg/L, and the chromaticity is 500 times.
  • the extractant used in the extraction is kerosene.
  • the pollutant index of the dephenolized blue carbon waste water is: COD is 5280.9 mg/L, ammonia nitrogen is 1701 mg/L, total phenol is 309 mg/L, and chroma is 500 times.
  • step (4) The blue carbon waste water after the dephenolization in step (4) is added to the potassium hydroxide solution to adjust the pH to 10, and the ammonia gas is removed by heating and evaporation, and the ammonia gas is absorbed by the sulfuric acid solution to produce ammonium sulfate.
  • the pollutant index of the blue carbon waste water after deamination is: 2488.4 mg/L COD, 43.9 mg/L ammonia nitrogen, 201 mg/L total phenol, and 500 times chromaticity.
  • Desulfurization adding desulfurization agent, such as ferrous sulfate, to the deaminated carbon waste water after step (5) deamination of nitrogen to form iron sulfide precipitation and desulfurization of blue carbon waste water, preventing the poisoning of the sulfide by biochemistry and improving its biochemical effect.
  • desulfurization agent such as ferrous sulfate
  • the pollutant index of the blue carbon waste water after desulfurization is: COD is 1959.00 mg/L, ammonia nitrogen is 39.8 mg/L, total phenol is 170 mg/L, and chroma is 200 times.
  • Anaerobic treatment the desulfurized blue carbon waste water obtained by desulfurization in step (6) is added to an alkali solution to adjust the pH to 6-9, and enters the anaerobic tank through the lift pump, and passes through the anaerobic and anaerobic bacteria in the anaerobic tank.
  • the adsorption, fermentation and methanogenesis work together to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater and remove most of the COD by anaerobic treatment, and improve the biodegradability of the wastewater.
  • the pollutant index of the anaerobic blue carbon waste water is: COD is 622.1 mg/L, ammonia nitrogen is 39.1 mg/L, total phenol is 9 mg/L, and chromaticity is 500 times.
  • Aerobic treatment after step (7) anaerobic treatment, the blue carbon waste water passes through the lift pump into the aerobic tank and the intermediate sedimentation tank, and part of the sludge in the intermediate sedimentation tank is returned to the aerobic tank through the reflux pump, and the good
  • the oxygen treatment further oxidizes and decomposes the organic matter in the blue carbon waste water to deeply remove COD and BOD; the aerobic pool is uniformly filled with a large amount of biological suspended filler to provide a habitat for aerobic microorganisms to grow and reproduce, so that the microorganism forms a biofilm on the surface of the filler.
  • An aerated oxygenation and agitation system is arranged at the bottom of the aerobic tank to oxygenate the sewage to maintain the dissolved oxygen in the water at 2 to 4 mg/L, and at the same time, the gas is used to increase the suspended matter and water in the pool.
  • Contact in addition to the agitation of gas and water backwashing, can effectively scouring the aged biofilm grown on the surface of the filler, promoting the replacement of the biofilm, so that the biofilm maintains high activity.
  • the pollutant index of the aerobic blue carbon waste water is: COD is 241.6 mg/L, ammonia nitrogen is 9.1 mg/L, total phenol is 1 mg/L, and chroma is 70 times.
  • Electrolysis After the aerobic treatment in step (8), the blue carbon waste water enters the electrolysis machine for electrolysis to remove the chromaticity and odor, and at the same time, the difficult biochemical macromolecular compound in the wastewater is opened and broken, and becomes biochemical.
  • the small molecule further increases the B/C value and improves the conditions of the subsequent biochemical treatment; the voltage between the adjacent electrodes of the electrolysis machine is 2 to 12 V, and the current density is 10 to 320 mA/cm 2 ;
  • the electrolyzer is provided with a power source and an electrolytic cell, and the electrode material in the electrolytic cell is one of graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert material. .
  • Step (10) After the secondary anaerobic treatment, the blue carbon waste water enters the biological aerated filter, and the wastewater is purified by biooxidation degradation to further remove COD, SS and ammonia nitrogen to obtain purified wastewater.
  • Step (11) The wastewater after biological biochemistry (BAF biochemical) of aerated biological filter enters the desalting device, and the dialysis water and concentrated water are separated, and the dialysis water enters the reclaimed water storage tank, and the concentrated water is discharged into the evaporation through the drainage channel.
  • the crystallization tank is subjected to crystallization treatment;
  • the desalination device is a nanofiltration system.
  • the nanofiltration membrane module in the nanofiltration system is a tubular membrane module, a coil membrane module or a flat membrane module, and the working pressure is 6 to 45 bar, the working temperature is 20 to 45 ° C, and the optimal temperature is 35. ⁇ 40 ° C.
  • Crude filtration The crude carbon waste water with a COD of 34967 mg/L, an ammonia nitrogen of 1911 mg/L, a total phenol of 6231 mg/L, a chromaticity of 2000 times, and a pH of 8.1 was coarsely filtered through a grid or a sieve. Remove large particles and debris;
  • the membrane is filtered into a ceramic membrane, and the ceramic membrane element of the ceramic membrane filtration system has a pore diameter of 20 to 100 nm, a working pressure of 3 to 6 bar, and a temperature of 15 to 55 °C.
  • Detarred oil The step (2) is filtered through a membrane to obtain a concentrated solution rich in coal tar, and sulfuric acid is added to adjust the pH to 4, and after centrifugation, the lower layer of coal tar and the upper layer of decoking waste water are recovered, and the lower layer of coal tar is recovered.
  • the coal tar was 17.8 kg/m 3 .
  • the centrifugal force for centrifugation was 3219.
  • the extractant used for the extraction is a mixture of tributyl phosphate and kerosene as an extractant.
  • the pollutant index of the dephenolized blue carbon waste water is: COD is 4116 mg/L, ammonia nitrogen is 2200 mg/L, total phenol is 357 mg/L, and chromaticity is 500 times.
  • step (4) The blue carbon waste water after the dephenolization in step (4) is added to a sodium hydroxide solution to adjust the pH to 10, and the ammonia gas is removed by heating and evaporation, and the ammonia gas is absorbed by the sulfuric acid solution to produce ammonium sulfate.
  • the pollutant index of the blue carbon waste water after deamination is: COD is 1642.31 mg/L, ammonia nitrogen is 36.5 mg/L, total phenol is 226 mg/L, and color is 500 times.
  • Desulfurization adding desulfurizing agent, such as ferrous sulfate, to the deaminated carbon waste water after step (5) deamination of nitrogen to form iron sulfide precipitated and desulfurized blue carbon waste water, preventing sulfide poisoning to biochemistry and improving its biochemical effect.
  • desulfurizing agent such as ferrous sulfate
  • Anaerobic treatment the desulfurized blue carbon waste water obtained by desulfurization in step (6) is added to an alkali solution to adjust the pH to 6-9, and enters the anaerobic tank through the lift pump, and passes through the anaerobic and anaerobic bacteria in the anaerobic tank.
  • the adsorption, fermentation and methanogenesis work together to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater and remove most of the COD by anaerobic treatment, and improve the biodegradability of the wastewater.
  • the pollutant index of the blue carbon waste water after the anaerobic treatment is: COD is 314.31 mg/L, ammonia nitrogen is 11.5 mg/L, total phenol is 197 mg/L, and chromaticity is 500 times.
  • Aerobic treatment after step (7) anaerobic treatment, the blue carbon waste water passes through the lift pump into the aerobic tank and the intermediate sedimentation tank, and part of the sludge in the intermediate sedimentation tank is returned to the aerobic tank through the reflux pump, and the good
  • the oxygen treatment further oxidizes and decomposes the organic matter in the blue carbon waste water to deeply remove COD and BOD; the aerobic pool is uniformly filled with a large amount of biological suspended filler to provide a habitat for aerobic microorganisms to grow and reproduce, so that the microorganism forms a biofilm on the surface of the filler.
  • An aerated oxygenation and agitation system is arranged at the bottom of the aerobic tank to oxygenate the sewage to maintain the dissolved oxygen in the water at 2 to 4 mg/L, and at the same time, the gas is used to increase the suspended matter and water in the pool.
  • Contact in addition to the agitation of gas and water backwashing, can effectively scouring the aged biofilm grown on the surface of the filler, promoting the replacement of the biofilm, so that the biofilm maintains high activity.
  • the pollutant index of the blue carbon waste water after the aerobic treatment is: COD is 97.80 mg/L, ammonia nitrogen is 10.7 mg/L, total phenol is 1 mg/L, and chromaticity is 80 times.
  • Electrolysis After the aerobic treatment in step (8), the blue carbon waste water enters the electrolysis machine for electrolysis to remove the chromaticity and odor, and at the same time, the difficult biochemical macromolecular compound in the wastewater is opened and broken, and becomes biochemical.
  • the small molecule further increases the B/C value and improves the conditions of the subsequent biochemical treatment; the voltage between the adjacent electrodes of the electrolysis machine is 2 to 12 V, and the current density is 10 to 320 mA/cm 2 ;
  • the electrolyzer is provided with a power source and an electrolytic cell, and the electrode material in the electrolytic cell is one of graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert material. .
  • Secondary anaerobic treatment the blue carbon waste water obtained by the electrolysis in step (9) is passed through a lift pump into a secondary anaerobic tank, and the anaerobic bacteria and facultative bacteria in the anaerobic tank are adsorbed, fermented, and methanogenic.
  • the function is to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater by anaerobic treatment and further remove most of the COD, thereby improving the biodegradability of the wastewater.
  • the pollutant index of the blue carbon waste water after the anaerobic treatment is: COD is 48.34 mg/L, ammonia nitrogen is 7.5 mg/L, and the chromaticity is 10 times.
  • Step (10) The second anaerobic treated blue carbon waste water enters the MBR treatment device, and the wastewater is purified by filtration separation of the membrane treatment device to further remove COD and ammonia nitrogen to obtain purified wastewater;
  • Step (11) The wastewater after MBR treatment enters the desalination device, and the dialysis water and concentrated water are separated, and the dialysis water enters the reclaimed water storage tank, and the concentrated water is discharged into the evaporation crystallization tank through the drainage channel for crystallization treatment;
  • the desalination device may be a reverse osmosis system, and the yield of reclaimed water is 75%.
  • the reverse osmosis membrane module of the reverse osmosis system is a roll membrane module, and the membrane material is an acetate membrane or a composite membrane in an organic membrane.
  • the molecular weight cutoff of the membrane material is 50-200 MWCO, and the inlet pressure can be 6.0-45.0 bar. The pressure can be 4.5 to 33.5 bar.
  • Crude filtration The crude carbon waste water with a COD of 14393 mg/L, an ammonia nitrogen of 1772 mg/L, a total phenol of 1900 mg/L, a color of 19,000 times, and a pH of 8.3 is coarsely filtered through a grid or a sieve. Remove large particles and debris;
  • the membrane filtration is ceramic membrane filtration, and the ceramic membrane element of the ceramic membrane filtration system has a pore diameter of 20 to 100 nm, a working pressure of 3 to 6 bar, and a temperature of 15 to 55 °C.
  • Step (2) is subjected to membrane filtration to obtain a concentrated solution rich in coal tar, and the recovered coal tar and detarred oil wastewater are obtained;
  • the centrifugal separation is to pump the concentrated carbon waste water separated and concentrated by the membrane into a centrifuge, and then centrifuge to separate the lower coal tar and the upper decoking wastewater, and the lower coal tar is recovered through the recovery pipe; centrifugal force of centrifugal separation It is 3400.
  • the coal tar was recovered to obtain coal tar of 3.2 kg/m 3 .
  • the pollutant index of the blue carbon waste water after the recovery of the coal tar is: COD is 11196 mg / L, ammonia nitrogen is 1817 mg / L, total phenol is 5039 mg / L, and the chromaticity is 500 times.
  • the extracting agent used for the extraction is crude benzene.
  • the pollutant indicators of the dephenolized blue carbon waste water are: COD is 2447.9 mg/L, ammonia nitrogen is 1701 mg/L, total phenol is 309 mg/L, and color is 500 times.
  • step (4) The blue carbon waste water after the dephenolization in step (4) is added to the potassium hydroxide solution to adjust the pH to 10, and the ammonia gas is removed by heating and evaporation, and the ammonia gas is absorbed by the sulfuric acid solution to produce ammonium sulfate.
  • the pollutant index of the blue carbon waste water after deamination is: COD is 1527.4 mg/L, ammonia nitrogen is 65.3 mg/L, total phenol is 201 mg/L, and color is 500 times.
  • Desulfurization adding desulfurizing agent, such as ferrous sulfate, to the deaminated carbon waste water after step (5) deamination of nitrogen to form iron sulfide precipitated and desulfurized blue carbon waste water, preventing sulfide poisoning to biochemistry and improving its biochemical effect.
  • desulfurizing agent such as ferrous sulfate
  • Anaerobic treatment the desulfurized blue carbon waste water obtained by desulfurization in step (6) is added to an alkali solution to adjust the pH to 6-9, and enters the anaerobic tank through the lift pump, and passes through the anaerobic and anaerobic bacteria in the anaerobic tank.
  • the adsorption, fermentation and methanogenesis work together to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater and remove most of the COD by anaerobic treatment, and improve the biodegradability of the wastewater.
  • the pollutant index of the anaerobic blue carbon waste water is: COD is 332.6 mg/L, ammonia nitrogen is 39.1 mg/L, total phenol is 9 mg/L, and chromaticity is 500 times.
  • Aerobic treatment after step (7) anaerobic treatment, the blue carbon waste water passes through the lift pump into the aerobic tank and the intermediate sedimentation tank, and part of the sludge in the intermediate sedimentation tank is returned to the aerobic tank through the reflux pump, and the good
  • the oxygen treatment further oxidizes and decomposes the organic matter in the blue carbon waste water to deeply remove COD and BOD; the aerobic pool is uniformly filled with a large amount of biological suspended filler to provide a habitat for aerobic microorganisms to grow and reproduce, so that the microorganism forms a biofilm on the surface of the filler.
  • An aerated oxygenation and agitation system is arranged at the bottom of the aerobic tank to oxygenate the sewage to maintain the dissolved oxygen in the water at 2 to 4 mg/L, and at the same time, the gas is used to increase the suspended matter and water in the pool.
  • Contact in addition to the agitation of gas and water backwashing, can effectively scouring the aged biofilm grown on the surface of the filler, promoting the replacement of the biofilm, so that the biofilm maintains high activity.
  • the pollutant index of the aerobic blue carbon waste water is: COD is 152.6 mg/L, ammonia nitrogen is 9.1 mg/L, total phenol is 1 mg/L, and chromaticity is 70 times.
  • Electrolysis After the aerobic treatment in step (8), the blue carbon waste water enters the electrolysis machine for electrolysis to remove the chromaticity and odor, and at the same time, the difficult biochemical macromolecular compound in the wastewater is opened and broken, and becomes biochemical.
  • the small molecule further increases the B/C value and improves the conditions of the subsequent biochemical treatment; the voltage between the adjacent electrodes of the electrolysis machine is 2 to 12 V, and the current density is 10 to 320 mA/cm 2 ;
  • the electrolyzer is provided with a power source and an electrolytic cell, and the electrode material in the electrolytic cell is one of graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert material. .
  • Step (10) After the secondary anaerobic treatment, the blue carbon waste water enters the biological aerated filter, and the wastewater is purified by biooxidation degradation to further remove COD, SS and ammonia nitrogen to obtain purified wastewater.
  • Step (11) The wastewater after biological biochemistry (BAF biochemical) of aerated biological filter enters the desalting device, and the dialysis water and concentrated water are separated, and the dialysis water enters the reclaimed water storage tank, and the concentrated water is discharged into the evaporation through the drainage channel.
  • the crystallization tank is subjected to crystallization treatment;
  • the desalination device may be a reverse osmosis system, and the yield of reclaimed water is 75%.
  • the reverse osmosis membrane module of the reverse osmosis system is a roll membrane module, and the membrane material is an acetate membrane or a composite membrane in an organic membrane.
  • the molecular weight cutoff of the membrane material is 50-200 MWCO, and the inlet pressure can be 6.0-45.0 bar. The pressure can be 4.5 to 33.5 bar.
  • Crude filtration The crude carbon waste water with a COD of 14679 mg/L, an ammonia nitrogen of 1740 mg/L, a total phenol of 4900 mg/L, a color of 18,000 times, and a pH of 8.3 is coarsely filtered through a grid or a sieve. Remove large particles and debris;
  • the membrane filtration is ceramic membrane filtration, and the ceramic membrane element of the ceramic membrane filtration system has a pore diameter of 20 to 100 nm, a working pressure of 3 to 6 bar, and a temperature of 15 to 55 °C.
  • the COD of the dialysate obtained by the filtration of the ceramic membrane was 9679 mg/L, and the removal rate of COD by membrane filtration was 34%.
  • Step (2) is subjected to membrane filtration to obtain a concentrated solution rich in coal tar, and the recovered coal tar and detarred oil wastewater are obtained;
  • the centrifugal separation is to pump the concentrated carbon waste water separated and concentrated by the membrane into a centrifuge, and then centrifuge to separate the lower coal tar and the upper decoking wastewater, and the lower coal tar is recovered through the recovery pipe; centrifugal force of centrifugal separation It is 3400.
  • the coal tar was recovered to obtain coal tar of 5.2 kg/m 3 .
  • the pollutant index of the blue carbon waste water after the de-tarring oil is: COD is 9991 mg/L, ammonia nitrogen is 1817 mg/L, total phenol is 5039 mg/L, and the chromaticity is 500 times.
  • the extracting agent used for the extraction is crude benzene.
  • the extracted organic phase is separated by distillation to obtain 4.753 kg/m 3 of crude phenol, and the organic phase is recycled as crude benzene.
  • the pollutant index of the dephenolized blue carbon waste water is: COD is 3580.9 mg/L, ammonia nitrogen is 1771 mg/L, total phenol is 309 mg/L, and chroma is 500 times.
  • step (4) The blue carbon waste water after the dephenolization in step (4) is added to the potassium hydroxide solution to adjust the pH to 11, and the ammonia gas is removed by heating and evaporation, and the ammonia gas is absorbed by the sulfuric acid solution to produce ammonium sulfate.
  • the pollutant index of the blue carbon waste water after deamination is: COD is 2088.4 mg/L, ammonia nitrogen is 43.9 mg/L, total phenol is 201 mg/L, and chromaticity is 500 times.
  • Desulfurization adding desulfurizing agent, such as ferrous sulfate, to the deaminated carbon waste water after step (5) deamination of nitrogen to form iron sulfide precipitated and desulfurized blue carbon waste water, preventing sulfide poisoning to biochemistry and improving its biochemical effect.
  • desulfurizing agent such as ferrous sulfate
  • the pollutant index of the blue carbon waste water after desulfurization is: COD is 1655.9 mg/L, ammonia nitrogen is 46.9 mg/L, total phenol is 160 mg/L, and chroma is 200 times.
  • Anaerobic treatment the desulfurized blue carbon waste water obtained by desulfurization in step (6) is added to an alkali solution to adjust the pH to 6-9, and enters the anaerobic tank through the lift pump, and passes through the anaerobic and anaerobic bacteria in the anaerobic tank.
  • the adsorption, fermentation and methanogenesis work together to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater and remove most of the COD by anaerobic treatment, and improve the biodegradability of the wastewater.
  • the pollutant index of the anaerobic blue carbon waste water is: COD is 411.6 mg/L, ammonia nitrogen is 39.1 mg/L, total phenol is 9 mg/L, and chromaticity is 500 times.
  • Aerobic treatment after step (7) anaerobic treatment, the blue carbon waste water passes through the lift pump into the aerobic tank and the intermediate sedimentation tank, and part of the sludge in the intermediate sedimentation tank is returned to the aerobic tank through the reflux pump, and the good
  • the oxygen treatment further oxidizes and decomposes the organic matter in the blue carbon waste water to deeply remove COD and BOD; the aerobic pool is uniformly filled with a large amount of biological suspended filler to provide a habitat for aerobic microorganisms to grow and reproduce, so that the microorganism forms a biofilm on the surface of the filler.
  • An aerated oxygenation and agitation system is arranged at the bottom of the aerobic tank to oxygenate the sewage to maintain the dissolved oxygen in the water at 2 to 4 mg/L, and at the same time, the gas is used to increase the suspended matter and water in the pool.
  • Contact in addition to the agitation of gas and water backwashing, can effectively scouring the aged biofilm grown on the surface of the filler, promoting the replacement of the biofilm, so that the biofilm maintains high activity.
  • the pollutant index of the aerobic blue carbon waste water is: COD is 156.1 mg/L, ammonia nitrogen is 9.1 mg/L, total phenol is 1 mg/L, and chroma is 70 times.
  • Electrolysis After the aerobic treatment in step (8), the blue carbon waste water enters the electrolysis machine for electrolysis to remove the chromaticity and odor, and at the same time, the difficult biochemical macromolecular compound in the wastewater is opened and broken, and becomes biochemical.
  • the small molecule further increases the B/C value and improves the conditions of the subsequent biochemical treatment; the voltage between the adjacent electrodes of the electrolysis machine is 2 to 12 V, and the current density is 10 to 320 mA/cm 2 ;
  • the electrolyzer is provided with a power source and an electrolytic cell, and the electrode material in the electrolytic cell is one of graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert material. .
  • Step (10) After the secondary anaerobic treatment, the blue carbon waste water enters the biological aerated filter, and the wastewater is purified by biooxidation degradation to further remove COD, SS and ammonia nitrogen to obtain purified wastewater.
  • Step (11) The wastewater after biological biochemistry (BAF biochemical) of aerated biological filter enters the desalting device, and the dialysis water and concentrated water are separated, and the dialysis water enters the reclaimed water storage tank, and the concentrated water is discharged into the evaporation through the drainage channel.
  • the crystallization tank is subjected to crystallization treatment;
  • the desalination device is a nanofiltration system.
  • the nanofiltration membrane module in the nanofiltration system is a tubular membrane module, a coil membrane module or a flat membrane module, and the working pressure is 6 to 45 bar, the working temperature is 20 to 45 ° C, and the optimal temperature is 35. ⁇ 40 ° C.
  • the membrane filtration is metal membrane filtration; the metal membrane element of the metal membrane filtration system has a pore diameter of 30 to 100 nm; the working pressure is 3 to 6 bar, and the temperature is 15 to 55 °C.
  • step (2) is filtered through a membrane to obtain a concentrated solution rich in coal tar, and centrifuged to obtain recovered coal tar and detarred oil wastewater.
  • the centrifugal separation is to pump the concentrated carbon waste water separated and concentrated by the membrane into a centrifuge, and then centrifuge to separate the lower coal tar and the upper decoking wastewater, and the lower coal tar is recovered to obtain tar 40 kg/m 3 .
  • the pollutant index of the blue carbon waste water after the de-tarring is: COD is 23841 mg/L, ammonia nitrogen is 6383 mg/L, total phenol is 6305.9 mg/L, and the chromaticity is 500 times.
  • the extracting agent used for the extraction is kerosene, the ratio of kerosene to wastewater is 1:5, extracted three times, the phenol is extracted into the kerosene organic phase, and the liquid-liquid separation is performed to obtain the phenol-containing kerosene organic phase and the blue carbon waste water phase.
  • the crude phenol was separated by 5.9 kg/m 3 .
  • the pollutant index of the wastewater after the dephenolation treatment is: COD is 9928 mg / L, ammonia nitrogen is 6383 mg / L, total phenol is 305.3 mg / L, and the color is 500.
  • the pollutant index of the wastewater after the deamination treatment is: COD is 2587.5 mg/L, ammonia nitrogen is 81 mg/L, total phenol is 301.5 mg/L, and chroma is 500 times.
  • Desulfurization adding desulfurizing agent, such as ferrous sulfate, to the deaminated carbon waste water after step (5) deamination of nitrogen to form iron sulfide precipitated and desulfurized blue carbon waste water, preventing sulfide poisoning to biochemistry and improving its biochemical effect.
  • desulfurizing agent such as ferrous sulfate
  • Anaerobic treatment the desulfurized blue carbon waste water obtained by desulfurization in step (6) is added to an alkali solution to adjust the pH to 6-9, and enters the anaerobic tank through the lift pump, and passes through the anaerobic and anaerobic bacteria in the anaerobic tank.
  • the adsorption, fermentation and methanogenesis work together to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater and remove most of the COD by anaerobic treatment, and improve the biodegradability of the wastewater.
  • the pollutant index of the wastewater after the anaerobic treatment is: COD is 595.2 mg/L, ammonia nitrogen is 51 mg/L, total phenol is 433 mg/L, and chromaticity is 500 times.
  • Aerobic treatment after step (7) anaerobic treatment, the blue carbon waste water passes through the lift pump into the aerobic tank and the intermediate sedimentation tank, and part of the sludge in the intermediate sedimentation tank is returned to the aerobic tank through the reflux pump, and the good
  • the oxygen treatment further oxidizes and decomposes the organic matter in the blue carbon waste water to deeply remove COD and BOD; the aerobic pool is uniformly filled with a large amount of biological suspended filler to provide a habitat for aerobic microorganisms to grow and reproduce, so that the microorganism forms a biofilm on the surface of the filler.
  • An aerated oxygenation and agitation system is arranged at the bottom of the aerobic tank to oxygenate the sewage to maintain the dissolved oxygen in the water at 2 to 4 mg/L, and at the same time, the gas is used to increase the suspended matter and water in the pool.
  • Contact in addition to the agitation of gas and water backwashing, can effectively scouring the aged biofilm grown on the surface of the filler, promoting the replacement of the biofilm, so that the biofilm maintains high activity.
  • the pollutant index of the wastewater after the aerobic treatment is: COD is 232.1 mg/L, ammonia nitrogen is 11 mg/L, total phenol is 0.3 mg/L, and chroma is 200 times.
  • Electrolysis After the aerobic treatment in step (8), the blue carbon waste water enters the electrolysis machine for electrolysis to remove the chromaticity and odor, and at the same time, the difficult biochemical macromolecular compound in the wastewater is opened and broken, and becomes biochemical.
  • the small molecule further increases the B/C value and improves the conditions of subsequent biochemical treatment; the voltage between adjacent electrodes of the electrolysis machine is 2 to 12 V, and the current density is 10 to 320 mA/cm 2 .
  • the electrolyzer is provided with a power source and an electrolytic cell, and the electrode material in the electrolytic cell is one of graphite, titanium, iron, aluminum, zinc, copper, lead, nickel, molybdenum, chromium, alloy and nano catalytic inert material. .
  • Secondary anaerobic treatment the blue carbon waste water obtained by the electrolysis in step (9) is passed through a lift pump into a secondary anaerobic tank, and the anaerobic bacteria and facultative bacteria in the anaerobic tank are adsorbed, fermented, and methanogenic.
  • the function is to decompose the organic acid into methane and carbon dioxide, improve the B/C value of the wastewater by anaerobic treatment and further remove most of the COD, thereby improving the biodegradability of the wastewater.
  • the pollutant index of the wastewater after the anaerobic treatment is: COD is 116.08 mg/L, ammonia nitrogen is 9 mg/L, and the chroma is 200 times.
  • Step (10) The secondary anaerobic treated blue carbon wastewater enters the MBR treatment device, and the wastewater is purified by filtration separation or biological oxidative degradation of the MBR treatment device to further remove COD and ammonia nitrogen to obtain purified wastewater.
  • the membrane module of the MBR device is selected from the group consisting of a polyvinylidene fluoride hollow fiber membrane, a polypropylene hollow fiber membrane, a polysulfone hollow fiber membrane, a polyethersulfone, a polyacrylonitrile, and a polyvinyl chloride hollow fiber membrane. It is 0.10 to 0.2 ⁇ m, the working pressure is -1 to -50 kPa, and the working temperature is 5 to 45 °C.
  • the pollutant index of the wastewater after the MBR treatment is 71.11 mg/L, the ammonia nitrogen is 8 mg/L, and the color is 12.
  • Step (11) The wastewater after membrane treatment enters the desalting device, and the dialysis water and concentrated water are separated, and the dialysis water enters the reclaimed water storage tank, and the concentrated water is discharged into the evaporation crystallization tank through the drainage channel for crystallization treatment;
  • the desalination device is a nanofiltration system.
  • the nanofiltration membrane module in the nanofiltration system is a tubular membrane module, a coil membrane module or a flat membrane module, and the working pressure is 6 to 45 bar, the working temperature is 20 to 45 ° C, and the optimal temperature is 35. ⁇ 40 ° C.
  • the invention can be applied industrially and has good industrial applicability.

Abstract

L'invention concerne un procédé de traitement et de recyclage régénératif des eaux usées issues de la production de semi-coke, comprenant les étapes suivantes : (1) filtration grossière; (2) filtration sur membrane; (3) dégoudronnnage; (4) déphénolisation; (5) élimination d'ammoniac-azote; (6) désulfuration; (7) traitement anaérobie; (8) traitement aérobie; (9) électrolyse; (10) traitement anaérobie secondaire; (11) traitement par membrane ou traitement biochimique d'un filtre biologique aéré; et (12) dessalage.
PCT/CN2016/081777 2015-05-27 2016-05-12 Procédé de traitement et de recyclage régénératif des eaux usées issues de la production de semi-coke WO2016188326A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201510277196.3 2015-05-27
CN201510277196.3A CN104926030A (zh) 2015-05-27 2015-05-27 兰炭废水处理及再生循环利用方法

Publications (1)

Publication Number Publication Date
WO2016188326A1 true WO2016188326A1 (fr) 2016-12-01

Family

ID=54113499

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2016/081777 WO2016188326A1 (fr) 2015-05-27 2016-05-12 Procédé de traitement et de recyclage régénératif des eaux usées issues de la production de semi-coke

Country Status (2)

Country Link
CN (1) CN104926030A (fr)
WO (1) WO2016188326A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107935299A (zh) * 2017-11-17 2018-04-20 山西振钢化工有限公司 一种焦化废水处理方法及装置
CN108503059A (zh) * 2018-04-11 2018-09-07 江苏赛瑞迈科新材料有限公司 一种延迟焦化废水过滤处理装置及其方法
DE102017207286A1 (de) * 2017-04-28 2018-10-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und vorrichtung zur aufbereitung von abfallprodukten
CN109970290A (zh) * 2019-04-29 2019-07-05 南京林业大学 一种零排放处理高含盐乙腈废水的方法及其专用装置
CN111517561A (zh) * 2020-03-31 2020-08-11 临涣焦化股份有限公司 一种焦化化工产品精制废水处理方法
CN111807589A (zh) * 2019-04-12 2020-10-23 江苏南大环保科技有限公司 一种煤化工高氨氮废水回收高品位氯化铵的方法
CN112047550A (zh) * 2020-08-28 2020-12-08 环球润博能源科技(北京)有限公司 一种处理含复杂有机污染物及氨氮废水的系统及方法
CN112090919A (zh) * 2019-08-22 2020-12-18 上海巨道环保科技有限公司 一种盐硝危固废资源再利用的处理工艺
CN113713755A (zh) * 2021-09-28 2021-11-30 榆林学院 一种混合金属氧化物介孔材料及其用于处理兰炭废水的方法
CN114409170A (zh) * 2022-01-29 2022-04-29 陕西东鑫垣化工有限责任公司 一种酚氨废水处理的水油氨硫渣分离系统和方法
CN114702192A (zh) * 2022-01-24 2022-07-05 艾特克控股集团股份有限公司 一种含苯环类物质废液处理装置及处理方法
CN114950523A (zh) * 2022-05-23 2022-08-30 榆林学院 一种兰炭废水处理催化剂及其制备方法和应用
CN115304209A (zh) * 2022-06-28 2022-11-08 陕西东鑫垣化工有限责任公司 一种酚氨废水处理的水油氨硫分离装置及工艺
CN115611459A (zh) * 2022-10-14 2023-01-17 深圳市华虹清源环保科技有限公司 氨法磷酸铁生产洗水的处理方法及系统
CN115947471A (zh) * 2022-11-01 2023-04-11 伊沃环境科技(南京)有限公司 一种兰炭废水达标回用的处理工艺
CN116969638A (zh) * 2023-08-30 2023-10-31 江苏沃德凯环保科技有限公司 一种兰炭废水的脱氨处理方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104926030A (zh) * 2015-05-27 2015-09-23 波鹰(厦门)科技有限公司 兰炭废水处理及再生循环利用方法
CN112479423B (zh) * 2020-11-18 2022-12-27 辽东学院 一种生产含氨基酚类化合物的废水处理方法
CN113321379A (zh) * 2021-06-02 2021-08-31 山东环发科技开发有限公司 一种电化学辅助高效复合脱盐方法
CN113683267A (zh) * 2021-09-11 2021-11-23 成都九翼环保科技有限公司 一种针对高浓度难降解兰炭废水的处理系统及处理方法
CN113943078B (zh) * 2021-10-28 2023-07-21 内蒙古万众炜业科技环保股份公司 一种煤炭裂解产生污水处理工艺
CN114956482B (zh) * 2022-06-23 2023-07-21 昆明理工大学 一种酸性矿坑/矿井水回用至煤化工的联合节水方法

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2116247C1 (ru) * 1995-08-22 1998-07-27 Роберт Павлович Бернгардт Способ получения плавающего адсорбента нефтепродуктов из твердых остатков горения каменного и бурого углей
CN101875523A (zh) * 2009-04-28 2010-11-03 福建高科环保研究院有限公司 煤焦油加工废水处理方法及系统
CN103112991A (zh) * 2013-01-25 2013-05-22 深圳力合环保技术有限公司 焦化废水处理系统及焦化废水处理方法
CN103121774A (zh) * 2013-01-31 2013-05-29 陕西华祥能源科技集团有限公司 一种兰炭生产废水资源化多级回收装置及方法
CN103435134A (zh) * 2013-08-23 2013-12-11 西安科技大学 一种基于CNTs/Fe3O4三维电-Fenton提高兰炭废水可生化性的方法
CN103693810A (zh) * 2013-12-23 2014-04-02 北京清大国华环保科技有限公司 一种难降解废水高效生化处理的方法与装置
CN104860483A (zh) * 2015-05-27 2015-08-26 张世文 一种兰炭废水处理再生循环利用及资源回收利用方法
CN104860490A (zh) * 2015-06-10 2015-08-26 张世文 一种兰炭废水处理再生及资源回收利用装置
CN104926029A (zh) * 2015-05-27 2015-09-23 张世文 兰炭废水中焦油、酚及氨的综合利用和废水处理循环利用方法
CN104926030A (zh) * 2015-05-27 2015-09-23 波鹰(厦门)科技有限公司 兰炭废水处理及再生循环利用方法
CN104944691A (zh) * 2015-06-10 2015-09-30 张世文 基于膜浓缩的兰炭废水处理再生及资源回收利用装置

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2116247C1 (ru) * 1995-08-22 1998-07-27 Роберт Павлович Бернгардт Способ получения плавающего адсорбента нефтепродуктов из твердых остатков горения каменного и бурого углей
CN101875523A (zh) * 2009-04-28 2010-11-03 福建高科环保研究院有限公司 煤焦油加工废水处理方法及系统
CN103112991A (zh) * 2013-01-25 2013-05-22 深圳力合环保技术有限公司 焦化废水处理系统及焦化废水处理方法
CN103121774A (zh) * 2013-01-31 2013-05-29 陕西华祥能源科技集团有限公司 一种兰炭生产废水资源化多级回收装置及方法
CN103435134A (zh) * 2013-08-23 2013-12-11 西安科技大学 一种基于CNTs/Fe3O4三维电-Fenton提高兰炭废水可生化性的方法
CN103693810A (zh) * 2013-12-23 2014-04-02 北京清大国华环保科技有限公司 一种难降解废水高效生化处理的方法与装置
CN104860483A (zh) * 2015-05-27 2015-08-26 张世文 一种兰炭废水处理再生循环利用及资源回收利用方法
CN104926029A (zh) * 2015-05-27 2015-09-23 张世文 兰炭废水中焦油、酚及氨的综合利用和废水处理循环利用方法
CN104926030A (zh) * 2015-05-27 2015-09-23 波鹰(厦门)科技有限公司 兰炭废水处理及再生循环利用方法
CN104860490A (zh) * 2015-06-10 2015-08-26 张世文 一种兰炭废水处理再生及资源回收利用装置
CN104944691A (zh) * 2015-06-10 2015-09-30 张世文 基于膜浓缩的兰炭废水处理再生及资源回收利用装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LUO, XIONGWEI ET AL.: "Progress on Coal Semi-Coke Wastewater Treatment Technology", COAL PROCESSING & COMPREHENSIVE UTILIZATION, 25 February 2015 (2015-02-25), ISSN: 1005-8397 *

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017207286A1 (de) * 2017-04-28 2018-10-31 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Verfahren und vorrichtung zur aufbereitung von abfallprodukten
CN107935299A (zh) * 2017-11-17 2018-04-20 山西振钢化工有限公司 一种焦化废水处理方法及装置
CN107935299B (zh) * 2017-11-17 2024-01-05 山西振钢生物科技股份有限公司 一种焦化废水处理方法及装置
CN108503059A (zh) * 2018-04-11 2018-09-07 江苏赛瑞迈科新材料有限公司 一种延迟焦化废水过滤处理装置及其方法
CN111807589A (zh) * 2019-04-12 2020-10-23 江苏南大环保科技有限公司 一种煤化工高氨氮废水回收高品位氯化铵的方法
CN109970290A (zh) * 2019-04-29 2019-07-05 南京林业大学 一种零排放处理高含盐乙腈废水的方法及其专用装置
CN112090919A (zh) * 2019-08-22 2020-12-18 上海巨道环保科技有限公司 一种盐硝危固废资源再利用的处理工艺
CN111517561A (zh) * 2020-03-31 2020-08-11 临涣焦化股份有限公司 一种焦化化工产品精制废水处理方法
CN112047550A (zh) * 2020-08-28 2020-12-08 环球润博能源科技(北京)有限公司 一种处理含复杂有机污染物及氨氮废水的系统及方法
CN113713755A (zh) * 2021-09-28 2021-11-30 榆林学院 一种混合金属氧化物介孔材料及其用于处理兰炭废水的方法
CN114702192A (zh) * 2022-01-24 2022-07-05 艾特克控股集团股份有限公司 一种含苯环类物质废液处理装置及处理方法
CN114702192B (zh) * 2022-01-24 2023-10-24 艾特克控股集团股份有限公司 一种含苯环类物质废液处理装置及处理方法
CN114409170B (zh) * 2022-01-29 2023-04-07 陕西东鑫垣化工有限责任公司 一种酚氨废水处理的水油氨硫渣分离系统和方法
CN114409170A (zh) * 2022-01-29 2022-04-29 陕西东鑫垣化工有限责任公司 一种酚氨废水处理的水油氨硫渣分离系统和方法
CN114950523A (zh) * 2022-05-23 2022-08-30 榆林学院 一种兰炭废水处理催化剂及其制备方法和应用
CN114950523B (zh) * 2022-05-23 2024-01-26 榆林学院 一种兰炭废水处理催化剂及其制备方法和应用
CN115304209A (zh) * 2022-06-28 2022-11-08 陕西东鑫垣化工有限责任公司 一种酚氨废水处理的水油氨硫分离装置及工艺
CN115304209B (zh) * 2022-06-28 2023-08-15 陕西东鑫垣化工有限责任公司 一种酚氨废水处理的水油氨硫分离装置及工艺
CN115611459A (zh) * 2022-10-14 2023-01-17 深圳市华虹清源环保科技有限公司 氨法磷酸铁生产洗水的处理方法及系统
CN115947471A (zh) * 2022-11-01 2023-04-11 伊沃环境科技(南京)有限公司 一种兰炭废水达标回用的处理工艺
CN116969638A (zh) * 2023-08-30 2023-10-31 江苏沃德凯环保科技有限公司 一种兰炭废水的脱氨处理方法

Also Published As

Publication number Publication date
CN104926030A (zh) 2015-09-23

Similar Documents

Publication Publication Date Title
WO2016188326A1 (fr) Procédé de traitement et de recyclage régénératif des eaux usées issues de la production de semi-coke
WO2014190876A1 (fr) Dispositif et procédé de traitement d'eaux usées provenant de la production de feuilles reconstituées de tabac
WO2018155802A1 (fr) Appareil de traitement d'eaux usées pour l'élimination simplifiée d'azote à l'aide d'une oxydation anaérobie de l'ammonium et d'une nitritation partielle à l'aide de granulés de bactéries oxydant l'ammonium
WO2018155803A1 (fr) Appareil de traitement des eaux usées riches en azote utilisant un réservoir de réacteur biologique séquentiel de nitritation partielle relié à un réservoir de production de granulés de bactéries oxydant l'ammonium et oxydation d'ammonium anaérobie
WO2014187296A1 (fr) Appareil et procédé de régénération et de recyclage destinés aux eaux usées de traitement avancé dans la fabrication du papier
WO2012126316A2 (fr) Dispositif de recyclage des eaux usées fondé sur les technologies mbr et d'électrolyse et procédé associé
WO2012055263A1 (fr) Appareil et méthode de traitement et de recyclage des eaux usées de tannerie basés sur une technologie d'électrolyse nanocatalytique et une technologie de membrane
WO2013010388A1 (fr) Appareil de traitement des lixiviats de décharge et un produit de traitement associé
WO2013163963A1 (fr) Dispositif de traitement et de recyclage par régénération des eaux usées, et procédé associé
WO2013143506A1 (fr) Procédé de traitement d'un percolat de déchets
WO2012083673A1 (fr) Appareil de traitement et de réutilisation d'eaux résiduaires d'impression et de teinture, et procédé associé
WO2011063769A1 (fr) Dispositif d'épuration et procédé pour traiter de manière novatrice les eaux usées provenant de l'impression et la coloration
WO2012083674A1 (fr) Appareil de traitement et de réutilisation d'eaux résiduaires de tannage, et procédé associé
WO2012089102A1 (fr) Appareil de recyclage pour les eaux usées de processus d'impression et de teinture reposant sur l'électrolyse combinée avec une technologie de membrane, et méthode associée
WO2013048010A1 (fr) Système évolué de traitement de l'eau pour la séparation par membrane basé sur l'élimination des phosphores et des matériaux obstruant la membrane contenus dans un flux latéral
WO2016155101A1 (fr) Système et procédé de traitement pour l'élimination combinée d'huile de phénol à partir d'eaux usées de phénol-ammoniac
WO2014198179A1 (fr) Dispositif de recyclage basé sur la décalcification chimique et procédé pour le traitement de pointe d'eaux résiduaires de fabrication du papier
WO2018021840A1 (fr) Appareil compact de traitement de l'eau avancé utilisant un milieu filtrant spongieux
CN104860483A (zh) 一种兰炭废水处理再生循环利用及资源回收利用方法
CN115583764A (zh) 煤气化废水的处理方法
CN111732249A (zh) 一种一体化芬顿设备集成系统前处理工艺
CN107827315A (zh) 兰炭废水处理方法
CN101723537A (zh) 一种城市污水再利用处理新工艺
WO2024058441A1 (fr) Procédé de récupération de métal du groupe du platine à partir de déchets de catalyseur en utilisant du biocyanure et du liquide ionique
CN101177329A (zh) 消除工业废水中水溶性有机污染物浓度变化波动的方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 16799215

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 16799215

Country of ref document: EP

Kind code of ref document: A1