CN102153240A - Method for treating waste water from production of metronidazole - Google Patents
Method for treating waste water from production of metronidazole Download PDFInfo
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- CN102153240A CN102153240A CN 201110102987 CN201110102987A CN102153240A CN 102153240 A CN102153240 A CN 102153240A CN 201110102987 CN201110102987 CN 201110102987 CN 201110102987 A CN201110102987 A CN 201110102987A CN 102153240 A CN102153240 A CN 102153240A
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Abstract
The invention relates to a method for treating waste water from production of metronidazole. The steps of the method are as follows: adding alkali in metronidazole process waste water to adjust pH value and after evaporation, sending the metronidazole process waste water to a waste water adjusting tank; allowing imidazole process waste water and nitration process waste water to enter the waste water adjusting tank respectively through a grating; after mixture as well as water-quality and water-quantity adjustment by the waste water adjusting tank, sending the imidazole process waste water and the nitration process waste water to an electrolyzer for electrochemical catalysis water treatment; adding lime milk in the effluent of the electrolyzer to adjust pH value, sequentially removing ammonia-nitrogen by a neutralization aeration tank, adding flocculant, separating by a coagulative precipitation tank, and allowing supernatant water to enter a facultative tank for anaerobic degradation; and conducting oxic degradation by a biomembrane aeration tank and precipitation by a secondary precipitation tank on the effluent of the facultative tank for standardized discharge. Adopting a electrochemical catalysis water treatment technology for pretreating waste water, the method effectively eliminates the biotoxicity of the waste water, lowers the pollutant concentration of the waste water and greatly improves the biodegradability of the waste water, thus laying foundation for standardized biochemical treatment. The method is simple in technology and convenient in operation.
Description
Technical field
The present invention relates to the production wastewater treatment method, particularly is a kind of metronidazole production wastewater treatment method.
Background technology
Metronidazole has been widely used in clinical as killing one of main medicine of anerobe.But contain the toxic substance that suppresses microorganism growth even killing microorganisms in the metronidazole factory effluent, also contain salts such as sodium formiate and sodium sulfate, complicated component, organic concentration and salt concn are all high, bio-toxicity is big, its biodegradability extreme difference.Existing metronidazole production wastewater treatment method mainly contains catalytic oxidation, internal electrolysis and thin up microbiological treatment.
Catalytic oxidation is under catalyst action, and the organism in the waste water is by the strong oxidizer oxygenolysis, and the two bond ruptures in the organic constitution are oxidized to small molecules by macromole, and small molecules further is oxidized to carbonic acid gas and water, eliminates the bio-toxicity of waste water, makes COD
CrDescend BOD significantly
5/ COD
CrValue improves, and improves the biodegradability of waste water.But this method facility investment is big, processing cost is high.
Internal electrolysis is to utilize iron and charcoal component formation micro cell in the iron filings, with the sewage that charges into is electrolyte solution, in the slant acidity environment, organic pollutant is implemented reduction reaction, to remove part colourity, partial organic substances in the waste water, improve the biodegradability energy of waste water.This method processing cost is low, but restricted application, and have engineering defect such as iron carbon slab knot, generation channel, equipment move freely, operational difficulty.
The thin up microbiological treatment can only reduce Pollutant levels and can not change the character of pollutent, goes back waste water resource.
Therefore, it is very necessary to design a kind of technology metronidazole production wastewater treatment method simple, easy and simple to handle.
Summary of the invention
The purpose of this invention is to provide a kind of technology metronidazole production wastewater treatment method simple, easy and simple to handle.
For achieving the above object, the present invention adopts following technical scheme:
A kind of metronidazole production wastewater treatment method, its step is as follows:
A. the waste water of metronidazole operation adds the adjusting PH with base value to 7.5-8.0, with being pumped into evaporation unit, behind removal salinity, high boiling material and the residue, enters wastewater equalization pond;
B. the waste water of imidazoles operation and nitrated operation enters wastewater equalization pond after separating, scum by grid respectively;
C. mix through wastewater equalization pond, and after regulating water quality, the water yield, send into electrolyzer and carry out the electrochemical catalysis water treatment;
D. the water outlet of electrolyzer adds milk of lime and regulates the pH value to 8.5-9.0, and in entering and aeration tank is with the air compressor machine deamination-nitrogen of blowing;
The water outlet of e. and aeration tank enters coagulative precipitation tank and carries out precipitate and separate after adding flocculation agent;
F. the supernatant water of coagulative precipitation tank enters oxygen compatibility pool and carries out anoxic degraded;
G. the oxygen compatibility pool water outlet enters the biofilm aeration pond and carries out aerobic degradation;
H. the water outlet of biofilm aeration pond enters the second pond precipitation;
I. the primary water qualified discharge of second pond.
Further, described electrochemical catalysis water treatment is population electrochemical catalysis water treatment device and the electrolysis of pulse electrochemical catalysis water treatment device two-stage.
Further, describedly be evaporated to triple effect evaporation.
Compared with prior art, the present invention adopts the electrochemical catalysis water technology that the metronidazole factory effluent is carried out pre-treatment, by electrochemistry direct oxidation-reduction and indirect oxidation-reduction, the different organic molecule of structure is implemented the oxygenolysis or the reduction modification of non-selectivity, make open loop, scission of link, degraded, modifications such as ring texture, painted group and sterilization component, eliminated the bio-toxicity of waste water effectively, the Pollutant levels of waste water have been reduced, increased substantially the biodegradability of waste water, thereby laid a good foundation for the biochemical treatment qualified discharge.Technology of the present invention is simple, easy and simple to handle.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments, but this embodiment should not be construed as limitation of the present invention.
Embodiment 1
A kind of metronidazole production wastewater treatment method, its step is as follows:
A. the waste water of metronidazole operation adds the adjusting PH with base value to 7.5-8.0, with being pumped into evaporation unit, behind removal salinity, high boiling material and the residue, enters wastewater equalization pond;
B. the waste water of imidazoles operation and nitrated operation enters wastewater equalization pond after separating, scum by grid respectively;
C. mix through wastewater equalization pond, and after regulating water quality, the water yield, send into electrolyzer and carry out the electrochemical catalysis water treatment;
D. the water outlet of electrolyzer adds milk of lime and regulates the pH value to 8.5-9.0, and in entering and aeration tank is with the air compressor machine deamination-nitrogen of blowing;
The water outlet of e. and aeration tank enters coagulative precipitation tank and carries out precipitate and separate after adding flocculation agent;
F. the supernatant water of coagulative precipitation tank enters oxygen compatibility pool and carries out anoxic degraded;
G. the oxygen compatibility pool water outlet enters the biofilm aeration pond and carries out aerobic degradation;
H. the water outlet of biofilm aeration pond enters the second pond precipitation;
I. the primary water qualified discharge of second pond.
Embodiment 2
In the scheme of embodiment 1 record, described electrochemical catalysis water treatment is population electrochemical catalysis water treatment device and the electrolysis of pulse electrochemical catalysis water treatment device two-stage.
Embodiment 3
In the scheme of embodiment 1 record, describedly be evaporated to triple effect evaporation.
Embodiment 4
A kind of metronidazole production wastewater treatment method, its step is as follows:
The waste water of metronidazole operation adds adjusting PH with base value to 7.8 ± 0.2 earlier, send into the triple effect evaporation system with sump pump again, tell residue at the bottom of at the bottom of telling sodium sulfate, 2nd effect evaporator still at the bottom of the 1st effective evaporator still, continue dividing salt, triple-effect evaporator still, the steam of cat head cause water jet pump with water outlet to wastewater equalization pond;
The waste water of imidazoles operation and nitrated operation flows into wastewater equalization pond after separating, scum by grid respectively;
Very poor through the mixed wastewater biochemical of wastewater equalization pond, BOD
5/ COD
CrBe about 0.1, after adjusting water quality, the water yield, send into population electrochemical catalysis water treatment device and carry out first step electrolysis;
The water outlet of population electrochemical catalysis water treatment device flows into pulse electrochemical catalysis water treatment device and carries out second stage electrolysis;
The BOD of pulse electrochemical catalysis water treatment device water outlet
5/ COD
CrReach 0.37-0.48, the existing effect of bio-toxicity removed, and after adding milk of lime and regulating pH value to 8.8 ± 0.2, in entering and aeration tank is with the air compressor machine deamination-nitrogen of blowing;
In and after the water outlet of aeration tank adds polymerize aluminum chloride (PAC), enter coagulative precipitation tank and carry out precipitate and separate;
The supernatant water of coagulative precipitation tank enters oxygen compatibility pool and carries out the anoxic degraded;
The oxygen compatibility pool water outlet enters the biofilm aeration pond and carries out aerobic degradation;
The water outlet of biofilm aeration pond enters the second pond precipitation;
The primary water qualified discharge of second pond.
The content that is not described in detail in this specification sheets belongs to the those skilled in the art known prior art.
Claims (3)
1. metronidazole production wastewater treatment method, its step is as follows:
A. the waste water of metronidazole operation adds the adjusting PH with base value to 7.5-8.0, with being pumped into evaporation unit, behind removal salinity, high boiling material and the residue, enters wastewater equalization pond;
B. the waste water of imidazoles operation and nitrated operation enters wastewater equalization pond after separating, scum by grid respectively;
C. mix through wastewater equalization pond, and after regulating water quality, the water yield, send into electrolyzer and carry out the electrochemical catalysis water treatment;
D. the water outlet of electrolyzer adds milk of lime and regulates the pH value to 8.5-9.0, and in entering and aeration tank is with the air compressor machine deamination-nitrogen of blowing;
The water outlet of e. and aeration tank enters coagulative precipitation tank and carries out precipitate and separate after adding flocculation agent;
F. the supernatant water of coagulative precipitation tank enters oxygen compatibility pool and carries out anoxic degraded;
G. the oxygen compatibility pool water outlet enters the biofilm aeration pond and carries out aerobic degradation;
H. the water outlet of biofilm aeration pond enters the second pond precipitation;
I. the primary water qualified discharge of second pond.
2. metronidazole production wastewater treatment method according to claim 1 is characterized in that: described electrochemical catalysis water treatment is population electrochemical catalysis water treatment device and the electrolysis of pulse electrochemical catalysis water treatment device two-stage.
3. metronidazole production wastewater treatment method according to claim 1 and 2 is characterized in that: describedly be evaporated to triple effect evaporation.
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| CN2011101029874A CN102153240B (en) | 2011-04-25 | 2011-04-25 | Method for treating waste water from production of metronidazole |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863105A (en) * | 2012-09-12 | 2013-01-09 | 浙江工商大学 | Technology and system for treating high-salt high-nitrogen high-organic matter chemical wastewater |
| CN102976560A (en) * | 2012-12-11 | 2013-03-20 | 常州大学 | Process for treating sulfamide-containing pharmaceutical wastewater |
| CN103408082A (en) * | 2013-08-10 | 2013-11-27 | 黄冈师范学院 | Recovery method and device for formic acid solvent during metronidazole production |
| CN107585953A (en) * | 2017-09-15 | 2018-01-16 | 湖北省宏源药业科技股份有限公司 | A kind of benzoic methyl nitroazole method of wastewater treatment |
| CN110171902A (en) * | 2018-05-04 | 2019-08-27 | 武汉武药制药有限公司 | A kind of integrated conduct method of metronidazole waste water |
| WO2020220409A1 (en) * | 2019-04-30 | 2020-11-05 | 贵州民族大学 | Integrated treatment system for domestic garbage |
| CN116606021A (en) * | 2023-06-09 | 2023-08-18 | 威海蓝创环保设备有限公司 | Metronidazole waste water treatment system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857295A (en) * | 2010-05-19 | 2010-10-13 | 华南师范大学 | Method for quickly removing metronidazole by utilizing nanoscale zero-valent iron and application thereof |
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2011
- 2011-04-25 CN CN2011101029874A patent/CN102153240B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101857295A (en) * | 2010-05-19 | 2010-10-13 | 华南师范大学 | Method for quickly removing metronidazole by utilizing nanoscale zero-valent iron and application thereof |
Non-Patent Citations (2)
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| 《工业水处理》 20090930 陶龙骧等 "电催化和粒子群电极用于处理有机工业污水" 第1-3页 1-3 第20卷, 第9期 2 * |
| 《现代工业》 20100630 方丽萍等 "多效蒸发-生化组合工艺处理甲硝唑工业废水" 第81-84页 1-3 第30卷, 第6期 2 * |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102863105A (en) * | 2012-09-12 | 2013-01-09 | 浙江工商大学 | Technology and system for treating high-salt high-nitrogen high-organic matter chemical wastewater |
| CN102863105B (en) * | 2012-09-12 | 2013-09-11 | 浙江工商大学 | Technology and system for treating high-salt high-nitrogen high-organic matter chemical wastewater |
| CN102976560A (en) * | 2012-12-11 | 2013-03-20 | 常州大学 | Process for treating sulfamide-containing pharmaceutical wastewater |
| CN103408082A (en) * | 2013-08-10 | 2013-11-27 | 黄冈师范学院 | Recovery method and device for formic acid solvent during metronidazole production |
| CN103408082B (en) * | 2013-08-10 | 2014-12-03 | 黄冈师范学院 | Recovery method and device for formic acid solvent during metronidazole production |
| CN107585953A (en) * | 2017-09-15 | 2018-01-16 | 湖北省宏源药业科技股份有限公司 | A kind of benzoic methyl nitroazole method of wastewater treatment |
| CN110171902A (en) * | 2018-05-04 | 2019-08-27 | 武汉武药制药有限公司 | A kind of integrated conduct method of metronidazole waste water |
| CN110171902B (en) * | 2018-05-04 | 2022-01-11 | 武汉武药制药有限公司 | Comprehensive treatment method of metronidazole wastewater |
| WO2020220409A1 (en) * | 2019-04-30 | 2020-11-05 | 贵州民族大学 | Integrated treatment system for domestic garbage |
| CN116606021A (en) * | 2023-06-09 | 2023-08-18 | 威海蓝创环保设备有限公司 | Metronidazole waste water treatment system |
| CN116606021B (en) * | 2023-06-09 | 2023-11-14 | 威海蓝创环保设备有限公司 | Metronidazole waste water treatment system |
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| CN102153240B (en) | 2012-07-04 |
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Application publication date: 20110817 Assignee: Huanggang Yinhe Aarti Pharmaceutical Co.,Ltd. Assignor: Wuhan Weimeng Chemical Mechine Co., Ltd. Contract record no.: 2014420000122 Denomination of invention: Method for treating waste water from production of metronidazole Granted publication date: 20120704 License type: Exclusive License Record date: 20140627 |
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