CN108503128B - Treatment process of pharmaceutical wastewater - Google Patents
Treatment process of pharmaceutical wastewater Download PDFInfo
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- CN108503128B CN108503128B CN201810173410.4A CN201810173410A CN108503128B CN 108503128 B CN108503128 B CN 108503128B CN 201810173410 A CN201810173410 A CN 201810173410A CN 108503128 B CN108503128 B CN 108503128B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 78
- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000003647 oxidation Effects 0.000 claims abstract description 40
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 40
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 39
- 230000000813 microbial effect Effects 0.000 claims abstract description 31
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 22
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 19
- 239000000701 coagulant Substances 0.000 claims abstract description 18
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 15
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 15
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 15
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000004062 sedimentation Methods 0.000 claims abstract description 9
- 230000015271 coagulation Effects 0.000 claims abstract description 8
- 238000005345 coagulation Methods 0.000 claims abstract description 8
- 238000007599 discharging Methods 0.000 claims abstract description 8
- 239000002244 precipitate Substances 0.000 claims abstract description 8
- 238000001556 precipitation Methods 0.000 claims abstract description 8
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 24
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 claims description 16
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 16
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 12
- 240000008042 Zea mays Species 0.000 claims description 10
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 claims description 10
- 235000002017 Zea mays subsp mays Nutrition 0.000 claims description 10
- 235000005822 corn Nutrition 0.000 claims description 10
- 239000001648 tannin Substances 0.000 claims description 10
- 235000018553 tannin Nutrition 0.000 claims description 10
- 229920001864 tannin Polymers 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 9
- 239000010902 straw Substances 0.000 claims description 9
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 8
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 8
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 8
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 claims description 8
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims description 8
- 229910052943 magnesium sulfate Inorganic materials 0.000 claims description 8
- 235000019341 magnesium sulphate Nutrition 0.000 claims description 8
- 229920002401 polyacrylamide Polymers 0.000 claims description 8
- 239000011347 resin Substances 0.000 claims description 8
- 229920005989 resin Polymers 0.000 claims description 8
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 claims description 8
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 claims description 8
- 235000019345 sodium thiosulphate Nutrition 0.000 claims description 8
- 239000004408 titanium dioxide Substances 0.000 claims description 8
- 244000063299 Bacillus subtilis Species 0.000 claims description 7
- 235000014469 Bacillus subtilis Nutrition 0.000 claims description 7
- 241000605272 Acidithiobacillus thiooxidans Species 0.000 claims description 6
- 241000190984 Rhodospirillum rubrum Species 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 4
- 241000193830 Bacillus <bacterium> Species 0.000 claims description 3
- 241001509286 Thiobacillus denitrificans Species 0.000 claims description 3
- 241000605268 Thiobacillus thioparus Species 0.000 claims description 3
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 2
- 239000005751 Copper oxide Substances 0.000 claims description 2
- 241001062813 Stewartia sinensis Species 0.000 claims description 2
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 2
- 229910000431 copper oxide Inorganic materials 0.000 claims description 2
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 2
- 241000254158 Lampyridae Species 0.000 claims 1
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000010865 sewage Substances 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000003912 environmental pollution Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 3
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 3
- 241000108664 Nitrobacteria Species 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 230000002195 synergetic effect Effects 0.000 description 3
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 239000003403 water pollutant Substances 0.000 description 2
- 241000006384 Jeotgalibacillus marinus Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003933 environmental pollution control Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- 239000010815 organic waste Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010907 stover Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- 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
- 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
- C02F2103/343—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 pharmaceutical industry, e.g. containing antibiotics
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
-
- 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
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention belongs to the technical field of sewage treatment, and particularly relates to a sewage treatment deviceThe pharmaceutical wastewater treatment process comprises the following steps: s1, coagulation treatment: collecting waste generated in the pharmaceutical process into a waste water tank, adding a coagulant, stirring for 30-60 minutes, standing for 2-8 hours, and removing precipitates; s2, Fenton oxidation: the wastewater treated in the step S1 enters a Fenton oxidation tank, ferrous sulfate and hydrogen peroxide are added into the Fenton oxidation tank, and the wastewater reacts for 8-12 hours under the irradiation of ultraviolet rays; s3, microbial treatment: feeding the wastewater treated in the step S2 into a microbial treatment pool, adding a microbial preparation, and stirring for 8-28 hours; s4, ozone treatment: feeding the wastewater treated in the step S4 into an ozone oxidation tank, introducing ozone into the ozone oxidation tank, and adding a catalyst; s5, precipitation: and (4) sending the wastewater treated in the step S4 into a sedimentation tank, and directly discharging the precipitated water. The pharmaceutical wastewater treatment process is simple, and COD iscrBOD and NH3The removal rate of-N is high.
Description
Technical Field
The invention belongs to the technical field of sewage treatment, and particularly relates to a treatment process of pharmaceutical wastewater.
Background
Organic pollutant wastewater generated in the production process of the pharmaceutical industry is one of the recognized serious environmental pollution sources. In China, the pharmaceutical industry has the characteristics of large number of enterprises and various production varieties, but most of the enterprises have small scale and dispersed layout, and the problems of large input of raw materials, small output ratio and prominent environmental pollution exist in the production process. The pharmaceutical industry has been put into one of 12 industries for major pollution control by national environmental protection planning, and the wastewater generated in the production process of pharmaceutical industry becomes the major factor in environmental pollution control. Moreover, with the adoption of more and more strict treatment requirements of the country on the environmental pollution, since 2008, 8.1, the national environmental protection department requires all pharmaceutical enterprises to start to execute the water pollutant discharge standard of the pharmaceutical industry, and for the enterprises with water pollutants not reaching the standard, the environmental protection department shall order the enterprises to stop production and settle. Throughout the pharmaceutical industry emissions standards are known, many of which are very stringent, and the main ones are even more stringent than the us standards. For example: chemical Oxygen Demand (COD) and five-day Biochemical Oxygen Demand (BOD) generated by fermentation pharmaceutical enterprises5) Emission standards for total cyanide compounds, etc. approach the strictest European Union emission standards, where the Chemical Oxygen Demand (COD) emission limit was reduced from the previous 300rng/L to 120 mg/L. Meanwhile, the standard covers all product production lines of the whole pharmaceutical industry, and six pharmaceutical industries including fermentation pharmacy, extraction pharmacy, chemical synthesis pharmacy, biological engineering pharmacy, traditional Chinese medicine pharmacy and mixed preparation pharmacy are included. Therefore, the further treatment of pharmaceutical wastewater and the standard discharge thereof become very difficult. The waste water produced in the pharmaceutical industry belongs to one of the high-difficulty organic waste water which is difficult to treat, and simultaneouslyIs also one of the industrial wastewater with the most serious pollution and the most difficult treatment in China. The waste water has the common characteristics of complex components, various pollutant types and B0D5The ratio of the water quality to COD is lower, the fluctuation is large, the SS concentration is high, and the fluctuation of the water quality and the water quantity is large due to the adoption of an intermittent production method by most enterprises. Therefore, it is peculiar in treatment. At present, the common methods for treating pharmaceutical industry wastewater include physical and chemical methods, biochemical treatment methods, various process method combinations and the like. The existing sewage treatment process is complex and has poor wastewater treatment effect.
Disclosure of Invention
The invention aims to provide a pharmaceutical wastewater treatment process for improving the pharmaceutical wastewater treatment effect and reducing the environmental pollution.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a treatment process of pharmaceutical wastewater comprises the following steps:
s1, coagulation treatment: collecting waste generated in the pharmaceutical process into a waste water tank, adding a coagulant, stirring for 30-60 minutes, standing for 2-8 hours, and removing precipitates;
s2, Fenton oxidation: the wastewater treated in the step S1 enters a Fenton oxidation tank, ferrous sulfate and hydrogen peroxide are added into the Fenton oxidation tank, and the wastewater reacts for 8-12 hours under the irradiation of ultraviolet rays;
s3, microbial treatment: feeding the wastewater treated in the step S2 into a microbial treatment pool, adding a microbial preparation, and stirring for 8-28 hours;
s4, ozone treatment: feeding the wastewater treated in the step S4 into an ozone oxidation tank, introducing ozone into the ozone oxidation tank, and adding a catalyst;
s5, precipitation: and (4) sending the wastewater treated in the step S4 into a sedimentation tank, and directly discharging the precipitated water.
In the pharmaceutical wastewater treatment process provided by the invention, preferably, the coagulant mainly comprises the following raw materials in parts by weight: 10-35 parts of aluminum sulfate, 5-23 parts of magnesium sulfate, 2-18 parts of tannin, 3-41 parts of acrylonitrile resin, 12-32 parts of azodiisobutyronitrile, 5-19 parts of sodium thiosulfate, 2-27 parts of sodium dodecyl benzene sulfonate, 7-33 parts of hexadecyl trimethyl ammonium bromide, 17-40 parts of acetic acid, 3-17 parts of polyacrylamide and 30-87 parts of crushed corn straws.
In the pharmaceutical wastewater treatment process provided by the invention, preferably, the coagulant mainly comprises the following raw materials in parts by weight: 18-30 parts of aluminum sulfate, 10-17 parts of magnesium sulfate, 6-15 parts of tannin, 17-31 parts of acrylonitrile resin, 26-32 parts of azodiisobutyronitrile, 10-19 parts of sodium thiosulfate, 9-18 parts of sodium dodecyl benzene sulfonate, 14-26 parts of hexadecyl trimethyl ammonium bromide, 23-35 parts of acetic acid, 5-13 parts of polyacrylamide and 40-75 parts of crushed corn straws.
In the pharmaceutical wastewater treatment process provided by the invention, the addition amount of the ferrous sulfate is preferably 270-350 mg/L.
In the pharmaceutical wastewater treatment process provided by the invention, preferably, the addition amount of the hydrogen peroxide is 1-5% of the volume of the wastewater.
In the pharmaceutical wastewater treatment process provided by the invention, preferably, the microbial preparation comprises one or more of denitrifying bacillus, stewartia sinensis, bacillus marinus, bacillus subtilis, nitrite bacteria, nitrate bacteria, rhodospirillum rubrum, thiobacillus thiooxidans, thiobacillus denitrificans and thiobacillus thioparus.
In the pharmaceutical wastewater treatment process provided by the invention, preferably, the adding amount of the ozone is 255-320 mg/m3∙h。
In the pharmaceutical wastewater treatment process provided by the invention, preferably, the addition amount of the catalyst is 40-60 mg/L.
In the pharmaceutical wastewater treatment process provided by the invention, preferably, the catalyst is one or more of titanium dioxide, copper oxide, manganese oxide, iron oxide and cerium oxide.
By adopting the technical scheme, the crushed corn straws and the tannin can improve COD (chemical oxygen demand) in the pharmaceutical wastewatercrBOD and NH3The removal rate of-N has the synergistic and synergistic effect, and the COD is improvedcrBOD and NH3-removal rate of N. Hair brushSimple process for treating waste water of pharmaceutical industry, and high CODcrBOD and NH3The removal rate of-N is high, and the pharmaceutical wastewater treatment effect is good.
Detailed Description
The following further describes the embodiments of the present invention. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The embodiment provides a treatment process of pharmaceutical wastewater, which comprises the following steps:
s1, coagulation treatment: collecting waste generated in the pharmaceutical process into a waste water tank, adding a coagulant, stirring for 60 minutes, standing for 2 hours, and removing precipitates;
the coagulant is mainly composed of the following raw materials in parts by weight: 35 parts of aluminum sulfate, 23 parts of magnesium sulfate, 2 parts of tannin, 3 parts of acrylonitrile resin, 32 parts of azobisisobutyronitrile, 5 parts of sodium thiosulfate, 2 parts of sodium dodecyl benzene sulfonate, 7 parts of hexadecyl trimethyl ammonium bromide, 40 parts of acetic acid, 17 parts of polyacrylamide and 30 parts of crushed corn straws.
S2, Fenton oxidation: the wastewater treated in the step S1 enters a Fenton oxidation tank, ferrous sulfate and hydrogen peroxide are added into the Fenton oxidation tank, and the wastewater reacts for 12 hours under the irradiation of ultraviolet rays;
the addition of the ferrous sulfate is 350mg/L, and the addition of the hydrogen peroxide is 1 percent of the volume of the wastewater.
S3, microbial treatment: feeding the wastewater treated in the step S2 into a microbial treatment pool, adding a microbial preparation, and stirring for 28 hours;
the microbial preparation comprises bacillus subtilis, nitrite bacteria, nitrate bacteria, thiobacillus denitrificans and thiobacillus thioparus in a weight ratio of 3:1:2:1: 1.
S4, ozone treatment: feeding the wastewater treated in the step S4 into an ozone oxidation tank, introducing ozone into the ozone oxidation tank, and adding a catalyst;
the adding amount of the ozone is 320mg/m3∙ h, the adding amount of the catalyst is 40 mg/L;
the catalyst is titanium dioxide and manganese oxide, and the weight ratio of the titanium dioxide to the manganese oxide is 1: 1.
S5, precipitation: and (4) sending the wastewater treated in the step S4 into a sedimentation tank, and directly discharging the precipitated water.
Example 2
The embodiment provides a treatment process of pharmaceutical wastewater, which comprises the following steps:
s1, coagulation treatment: collecting waste generated in the pharmaceutical process into a waste water tank, adding a coagulant, stirring for 30 minutes, standing for 8 hours, and removing precipitates;
the coagulant is mainly composed of the following raw materials in parts by weight: 10 parts of aluminum sulfate, 5 parts of magnesium sulfate, 18 parts of tannin, 41 parts of acrylonitrile resin, 12 parts of azobisisobutyronitrile, 19 parts of sodium thiosulfate, 27 parts of sodium dodecyl benzene sulfonate, 33 parts of hexadecyl trimethyl ammonium bromide, 17 parts of acetic acid, 3 parts of polyacrylamide and 87 parts of crushed corn straws.
S2, Fenton oxidation: the wastewater treated in the step S1 enters a Fenton oxidation tank, ferrous sulfate and hydrogen peroxide are added into the Fenton oxidation tank, and the wastewater reacts for 8 hours under the irradiation of ultraviolet rays;
the addition of the ferrous sulfate is 270mg/L, and the addition of the hydrogen peroxide is 5 percent of the volume of the wastewater.
S3, microbial treatment: feeding the wastewater treated in the step S2 into a microbial treatment pool, adding a microbial preparation, and stirring for 8 hours;
the microbial preparation comprises bacillus subtilis, nitrobacteria, rhodospirillum rubrum and thiobacillus thiooxidans in a weight ratio of 2:3:2:1: 1.
S4, ozone treatment: feeding the wastewater treated in the step S4 into an ozone oxidation tank, introducing ozone into the ozone oxidation tank, and adding a catalyst;
the adding amount of the ozone is 255mg/m3∙ h, the adding amount of the catalyst is 60 mg/L; the catalyst is titanium dioxide.
S5, precipitation: and (4) sending the wastewater treated in the step S4 into a sedimentation tank, and directly discharging the precipitated water.
Example 3
The embodiment provides a treatment process of pharmaceutical wastewater, which comprises the following steps:
s1, coagulation treatment: collecting waste generated in the pharmaceutical process into a waste water tank, adding a coagulant, stirring for 42 minutes, standing for 6 hours, and removing precipitates;
the coagulant is mainly composed of the following raw materials in parts by weight: 23 parts of aluminum sulfate, 14 parts of magnesium sulfate, 11 parts of tannin, 25 parts of acrylonitrile resin, 23 parts of azobisisobutyronitrile, 15 parts of sodium thiosulfate, 6 parts of sodium dodecyl benzene sulfonate, 11 parts of hexadecyl trimethyl ammonium bromide, 31 parts of acetic acid, 16 parts of polyacrylamide and 65 parts of crushed corn straws.
S2, Fenton oxidation: the wastewater treated in the step S1 enters a Fenton oxidation tank, ferrous sulfate and hydrogen peroxide are added into the Fenton oxidation tank, and the wastewater reacts for 10 hours under the irradiation of ultraviolet rays;
the addition of the ferrous sulfate is 300mg/L, and the addition of the hydrogen peroxide is 3 percent of the volume of the wastewater.
S3, microbial treatment: feeding the wastewater treated in the step S2 into a microbial treatment pool, adding a microbial preparation, and stirring for 16 hours;
the microbial preparation comprises bacillus subtilis, nitrite bacteria, nitrate bacteria, rhodospirillum rubrum and thiobacillus thiooxidans in a weight ratio of 2:1:2:1: 1.
S4, ozone treatment: feeding the wastewater treated in the step S4 into an ozone oxidation tank, introducing ozone into the ozone oxidation tank, and adding a catalyst;
the dosage of the ozone is 280mg/m3∙ h, the adding amount of the catalyst is 50 mg/L; the catalyst is titanium dioxide.
S5, precipitation: and (4) sending the wastewater treated in the step S4 into a sedimentation tank, and directly discharging the precipitated water.
Example 4
The embodiment provides a treatment process of pharmaceutical wastewater, which comprises the following steps:
s1, coagulation treatment: collecting waste generated in the pharmaceutical process into a waste water tank, adding a coagulant, stirring for 35 minutes, standing for 4 hours, and removing precipitates;
the coagulant is mainly composed of the following raw materials in parts by weight: 10 parts of aluminum sulfate, 5 parts of magnesium sulfate, 41 parts of acrylonitrile resin, 12 parts of azodiisobutyronitrile, 12 parts of sodium thiosulfate, 19 parts of sodium dodecyl benzene sulfonate, 27 parts of cetyl trimethyl ammonium bromide, 17 parts of acetic acid, 3 parts of polyacrylamide and 87 parts of crushed corn straws.
S2, Fenton oxidation: the wastewater treated in the step S1 enters a Fenton oxidation tank, ferrous sulfate and hydrogen peroxide are added into the Fenton oxidation tank, and the mixture reacts for 9 hours under the irradiation of ultraviolet rays;
the addition of ferrous sulfate is 280mg/L, and the addition of hydrogen peroxide is 4% of the volume of the wastewater.
S3, microbial treatment: feeding the wastewater treated in the step S2 into a microbial treatment pool, adding a microbial preparation, and stirring for 20 hours;
the microbial preparation comprises bacillus subtilis, nitrobacteria, rhodospirillum rubrum and thiobacillus thiooxidans in a weight ratio of 2:3:2:1: 1.
S4, ozone treatment: feeding the wastewater treated in the step S4 into an ozone oxidation tank, introducing ozone into the ozone oxidation tank, and adding a catalyst;
the dosage of the ozone is 270mg/m3∙ h, the adding amount of the catalyst is 45 mg/L; the catalyst is titanium dioxide.
S5, precipitation: and (4) sending the wastewater treated in the step S4 into a sedimentation tank, and directly discharging the precipitated water.
Example 5
The embodiment provides a treatment process of pharmaceutical wastewater, which comprises the following steps:
s1, coagulation treatment: collecting waste generated in the pharmaceutical process into a waste water tank, adding a coagulant, stirring for 53 minutes, standing for 7 hours, and removing precipitates;
the coagulant is mainly composed of the following raw materials in parts by weight: 23 parts of aluminum sulfate, 17 parts of magnesium sulfate, 18 parts of tannin, 31 parts of acrylonitrile resin, 21 parts of azobisisobutyronitrile, 19 parts of sodium thiosulfate, 27 parts of sodium dodecyl benzene sulfonate, 24 parts of hexadecyl trimethyl ammonium bromide, 26 parts of acetic acid and 3 parts of polyacrylamide.
S2, Fenton oxidation: the wastewater treated in the step S1 enters a Fenton oxidation tank, ferrous sulfate and hydrogen peroxide are added into the Fenton oxidation tank, and the wastewater reacts for 11 hours under the irradiation of ultraviolet rays;
the addition of the ferrous sulfate is 270mg/L, and the addition of the hydrogen peroxide is 2 percent of the volume of the wastewater.
S3, microbial treatment: feeding the wastewater treated in the step S2 into a microbial treatment pool, adding a microbial preparation, and stirring for 24 hours;
the microbial preparation comprises bacillus subtilis, nitrobacteria, rhodospirillum rubrum and thiobacillus thiooxidans in a weight ratio of 2:3:2:1: 1.
S4, ozone treatment: feeding the wastewater treated in the step S4 into an ozone oxidation tank, introducing ozone into the ozone oxidation tank, and adding a catalyst;
the adding amount of the ozone is 310mg/m3∙ h, the adding amount of the catalyst is 60 mg/L; the catalyst is titanium dioxide.
S5, precipitation: and (4) sending the wastewater treated in the step S4 into a sedimentation tank, and directly discharging the precipitated water.
Test examples
In order to verify the beneficial technical effects of the invention, the medical wastewater is treated according to the above examples, and then the quality of the treated water is detected, and the results are shown in table 1.
TABLE 1 Water quality results (mg/L) of medical wastewater treated in examples
As can be seen from the above table, the COD of the pharmaceutical wastewater treated in accordance with the methods of examples 1 to 3crBOD and NH3The content of-N is significantly lower than that of pharmaceutical wastewater treated by the methods of examples 4 and 5. In the method of example 4In the method, tannin is lacked in the coagulant; in the process of example 7, there was a lack of comminuted corn stover in the coagulant; therefore, the pair of the crushed corn straws and the tannin can improve COD in the pharmaceutical wastewatercrBOD and NH3The removal rate of-N has a synergistic effect. The pharmaceutical wastewater treatment process is simple, and COD iscrBOD and NH3The removal rate of-N is high, and the pharmaceutical wastewater treatment effect is good.
The embodiments of the present invention have been described in detail, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, and the scope of protection is still within the scope of the invention.
Claims (4)
1. A treatment process of pharmaceutical wastewater is characterized by comprising the following steps:
s1, coagulation treatment: collecting wastewater generated in the pharmaceutical process into a wastewater tank, adding a coagulant, stirring for 30-60 minutes, standing for 2-8 hours, and removing precipitates;
s2, Fenton oxidation: the wastewater treated in the step S1 enters a Fenton oxidation tank, ferrous sulfate and hydrogen peroxide are added into the Fenton oxidation tank, and the wastewater reacts for 8-12 hours under the irradiation of ultraviolet rays;
s3, microbial treatment: feeding the wastewater treated in the step S2 into a microbial treatment pool, adding a microbial preparation, and stirring for 8-28 hours;
s4, ozone treatment: feeding the wastewater treated in the step S3 into an ozone oxidation tank, introducing ozone into the ozone oxidation tank, and adding a catalyst;
s5, precipitation: sending the wastewater treated in the step S4 into a sedimentation tank, and directly discharging the water after sedimentation;
the coagulant is mainly composed of the following raw materials in parts by weight: 18-30 parts of aluminum sulfate, 10-17 parts of magnesium sulfate, 6-15 parts of tannin, 17-31 parts of acrylonitrile resin, 26-32 parts of azodiisobutyronitrile, 10-19 parts of sodium thiosulfate, 9-18 parts of sodium dodecyl benzene sulfonate, 14-26 parts of hexadecyl trimethyl ammonium bromide, 23-35 parts of acetic acid, 5-13 parts of polyacrylamide and 40-75 parts of crushed corn straws;
the microbial preparation comprises one or more of denitrifying bacillus, stewartia sinensis, bacillus firefly aerothrix, bacillus subtilis, rhodospirillum rubrum, thiobacillus thiooxidans, thiobacillus denitrificans and thiobacillus thioparus;
the adding amount of the catalyst is 40-60 mg/L;
the catalyst is one or more of titanium dioxide, copper oxide, manganese oxide, iron oxide and cerium oxide.
2. The pharmaceutical wastewater treatment process according to claim 1, wherein the addition amount of the ferrous sulfate is 270-350 mg/L.
3. The pharmaceutical wastewater treatment process according to claim 1, wherein the addition amount of the hydrogen peroxide is 1-5% of the volume of the wastewater.
4. The pharmaceutical wastewater treatment process according to claim 1, wherein the dosage of the ozone is 255-320 mg/m3∙h。
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| CN112321090A (en) * | 2020-11-05 | 2021-02-05 | 苏州仕净环保科技股份有限公司 | Treatment process of pharmaceutical wastewater |
| CN113024014A (en) * | 2021-01-29 | 2021-06-25 | 云南和泽环保科技有限公司 | Hospital sewage treatment method |
| CN113003855A (en) * | 2021-01-29 | 2021-06-22 | 云南和泽环保科技有限公司 | Treatment method of traditional Chinese medicine extraction wastewater |
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| CN113880335A (en) * | 2021-11-12 | 2022-01-04 | 李墨爱 | Pharmaceutical sewage treatment method |
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