CN104211263A - Treating method of refractory organics in biochemical tailrace of traditional Chinese medicine wastewater - Google Patents
Treating method of refractory organics in biochemical tailrace of traditional Chinese medicine wastewater Download PDFInfo
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- CN104211263A CN104211263A CN201410486007.9A CN201410486007A CN104211263A CN 104211263 A CN104211263 A CN 104211263A CN 201410486007 A CN201410486007 A CN 201410486007A CN 104211263 A CN104211263 A CN 104211263A
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Abstract
The invention relates to a treating method of refractory organics in biochemical tailrace of traditional Chinese medicine wastewater. The treating method comprises the following steps that the biochemical tailrace enters a multi-stage catalysis ozone advanced oxidation pool firstly, then enters a biological aerated filter and is discharged after treating finally. According to the treating method, the water flow direction of the multi-stage catalysis ozone advanced oxidation pool is upward, the hydraulic retention time is 35-60 minutes, and ozone, H2O2 and a catalyst are added in the multi-stage catalysis ozone advanced oxidation pool; the water flow direction of the biological aerated filter is upward, the hydraulic retention time is 4-6h, and white rot fungi are added in the biological aerated filter. With the adoption of the treating method, after residual refractory organics in a water body are decomposed by virtue of prepositive multi-stage catalysis ozone advanced oxidation, enhanced biological treatment is carried out by the biological aerated filter so as to further degrade the refractory organics in the water body, thus removing the refractory organics in the biochemical tailrace of the traditional Chinese medicine wastewater. The treating method is simple, is low in cost and is high in treating efficiency.
Description
Technical field
The present invention relates to the processing technology field of traditional Chinese medicine wastewater, the treatment process of hardly degraded organic substance in especially a kind of traditional Chinese medicine wastewater biochemical tail water.
Background technology
Traditional Chinese medicine wastewater is the high dense organic industrial sewage of a kind of typical difficult degradation, after second-stage treatment, it is very difficult that COD and colourity are removed further again, mainly because wherein contain hardly degraded organic substance as materials such as lignin, Mierocrystalline cellulose, hemicellulose, carbohydrates, make effluent quality be difficult to meet " Chinese medicine class pharmaceutical industry water pollutions emission standard " (GB21906-2008) table 3 standard-required, the inevitable choice that efficient process is herbal pharmaceutical enterprise is carried out to hardly degraded organic substance in Chinese medicine wastewater biochemical tail water.
At present, the treatment process of hardly degraded organic substance in known traditional Chinese medicine wastewater biochemical tail water, processing efficiency is low, and working cost is high, operation stability is poor, sludge yield is large, makes the efficient process of hardly degraded organic substance in traditional Chinese medicine wastewater biochemical tail water lack operability in reality.
Summary of the invention
For overcoming the above problems, the object of the invention is to provide hardly degraded organic substance treatment technology in the traditional Chinese medicine wastewater biochemical tail water that a kind of working cost is cheap, easy and simple to handle, sludge yield is few.
For reaching above object, hardly degraded organic substance treatment process in the traditional Chinese medicine wastewater biochemical tail water that the present invention proposes, has following steps: first biochemical tail water enters multistage catalytic ozone high grade oxidation pond, then enters the rear outer row of BAF, finally process.
In multistage catalytic ozone high grade oxidation pond of the present invention, water (flow) direction upwards, and hydraulic detention time 35-60 minute, adds ozone, H in this pond
2o
2and catalyzer; In described BAF, water (flow) direction upwards, hydraulic detention time 4-6 hour, adds whiterot fungi in this pond.
After adopting above technical scheme, initial cost of the present invention few (cost of investment≤740 yuan/ton), working cost low (running cost≤1.6 yuan/ton), sludge yield is few, little to the secondary pollution of environment.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
According to Fig. 1, hardly degraded organic substance treatment process in traditional Chinese medicine wastewater biochemical tail water of the present invention, has following steps: first biochemical tail water enters multistage catalytic ozone high grade oxidation pond, then enters the rear outer row of BAF, finally process.
In multistage catalytic ozone high grade oxidation pond of the present invention, water (flow) direction upwards, and hydraulic detention time 35-60 minute, adds ozone, H in this pond
2o
2and catalyzer; In described BAF, water (flow) direction upwards, hydraulic detention time 4-6 hour, adds whiterot fungi in this pond.
The present invention adopts multistage catalytic ozone high grade oxidation-BAF combination treatment technology: first biochemical tail water enters flowing bottom multistage catalytic ozone high grade oxidation pond, from bottom to top, and the ozone successively through bottom is oxidized separately, the ozone/H at middle part
20
2ozone/the H on oxidation, top
20
2/ obligate catalyst oxidation, carries out the catalytic oxidation of for some time, and water outlet enters BAF, carries out further biological reinforced process, and the water outlet after process is arranged outward.
Above-mentioned each process apparatus function realizes by the following method: traditional Chinese medicine wastewater biochemical tail water is entered bottom multistage catalytic ozone high grade oxidation pond by water inlet pipe, then opens ozone dosage system, H respectively
20
2dosing system, obligate catalyzer dosing system, add ozone, the H of different amount in this pond according to practical situation
2o
2with obligate catalyzer, be convenient to the degraded of hardly degraded organic substance in traditional Chinese medicine wastewater, hydraulic detention time is 35-60 minute altogether, and ozone derives from CF series ozone generator, in situ preparation, dosage 25-45 mg/L, and other oxygenant dosages can according to process runoff investigation.After removing the hardly degraded organic substance that in water body, major part is residual, enter the further biological reinforced process of BAF, in BAF, water (flow) direction upwards, at the hydraulic detention time 4-6 hour of this biochemical reaction, and adds whiterot fungi.
Above-mentioned high-efficient treatment method takes first multistage catalytic O
3the operational path of BAF intensive treatment technology is connect again after high-level oxidation technology process.At O
3add H
2o
2or catalyzer, can produce the OH free radical that oxidation capacity is stronger, its oxidizing potential is 2.80V, compares O
3(oxidizing potential 2.07V) and H
2o
2(oxidizing potential 1.76V) difference more than high 35% and 59%.OH radical pair organism does not have selectivity, can be carbonic acid gas, water or mineral salt by its direct oxidation, can not cause new problem of environmental pollution, and pollutent be at O
3/ H
2o
2faster than single oxidising process 2 ~ 200 times of degradation rate in/catalyst oxidation process, treatment effect is higher than O
3or H
2o
2the effect of individual curing and O
3/ H
2o
2combination treatment effect, is a kind of chemical oxidization method of effective process organic wastewater with high concentration, but is used alone O
3/ H
2o
2, O
3/ H
2o
2/ catalyst oxidation technology is often too high by the expense needed for COD permineralization.Multistage catalytic O
3gao Ji Yangization – BAF technology is by the chemical oxidation pre-treatment of routine and biological treatment conbined usage, first this technique utilize the partial organic substances in chemical catalysis preoxidation removal traditional Chinese medicine wastewater, more crucially hardly degraded organic substance in traditional Chinese medicine wastewater is decomposed into the organism of easily degraded, improve the biodegradability of refractory organic, then carry out biochemical treatment by follow-up BAF.This process integration not only possesses the high efficiency that chemical catalytic oxidation is removed hardly degraded organic substance, and has possessed again the economy of general biological treatment.Advanced oxidation is not taked the mode of direct for COD mineralising, and just as pre-treatment, reduce part COD, improve the biodegradability of waste water simultaneously, therefore its expense is 1/5 ~ 1/3 of general chemical oxidation, after advanced oxidation process, follow-up employing is for the most efficient BAF of low concentration wastewater (BAF) technique, COD, colourity in further reduction traditional Chinese medicine wastewater, residual substance in further removal water body, water outlet reaches " Chinese medicine class pharmaceutical industry water pollutions emission standard " (GB21906-2008) table 3 standard-required.In addition BAF intensive treatment technology has the microbial biomass compared with horn of plenty, can tackle the fluctuation of water quantity and quality preferably, is beneficial to eliminate traditional Chinese medicine enterprise and to fix output quota by sales the disadvantageous effect brought.
Embodiment:
In this example, multistage catalytic ozone high grade oxidation pond, BAF are stainless steel, multistage catalytic ozone high grade oxidation pond diameter 250mm, height 1100mm, ozone derives from CF-G-10 ozonizer, in situ preparation, dosage 25-45 mg/L, totally 40 minutes reaction times.BAF diameter 600mm, height 3100mm, its hydraulic detention time 4-6 hour.
Water inlet is certain traditional Chinese medicine enterprise biochemical tail water, after this treatment technology process, water body hardly degraded organic substance is removed, in water outlet, COD drops to 32-41mg/L from 286-296mg/L, colourity drops to 23 from 120, meets " Chinese medicine class pharmaceutical industry water pollutions emission standard " (GB21906-2008) table 3 standard-required completely.
Claims (3)
1. the treatment process of hardly degraded organic substance in traditional Chinese medicine wastewater biochemical tail water, is characterized in that having following steps: first biochemical tail water enters multistage catalytic ozone high grade oxidation pond, then enters outer row after BAF, finally process.
2. the treatment process of hardly degraded organic substance in a kind of traditional Chinese medicine wastewater biochemical tail water according to claim 1, it is characterized in that: in described multistage catalytic ozone high grade oxidation pond, water (flow) direction upwards, hydraulic detention time 35-60 minute, adds ozone, H in this pond
2o
2and catalyzer.
3. the treatment process of hardly degraded organic substance in a kind of traditional Chinese medicine wastewater biochemical tail water according to claim 1, is characterized in that: in described BAF, water (flow) direction upwards, hydraulic detention time 4-6 hour, in this pond, adds whiterot fungi.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410486007.9A CN104211263A (en) | 2014-09-23 | 2014-09-23 | Treating method of refractory organics in biochemical tailrace of traditional Chinese medicine wastewater |
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| CN201410486007.9A CN104211263A (en) | 2014-09-23 | 2014-09-23 | Treating method of refractory organics in biochemical tailrace of traditional Chinese medicine wastewater |
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| CN104211263A true CN104211263A (en) | 2014-12-17 |
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| CN201410486007.9A Pending CN104211263A (en) | 2014-09-23 | 2014-09-23 | Treating method of refractory organics in biochemical tailrace of traditional Chinese medicine wastewater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105541007A (en) * | 2015-12-23 | 2016-05-04 | 张宏伟 | Deep treatment method for electroplating wastewater |
| CN106927616A (en) * | 2015-12-29 | 2017-07-07 | 广东卓信环境科技股份有限公司 | Biological aerated filter sewage treatment integrated device and its processing method |
| CN110894130A (en) * | 2019-12-17 | 2020-03-20 | 内蒙古科技大学 | Device and method for treating phenol-containing coal chemical wastewater by using advanced oxidation method and immobilized white-rot fungi |
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| CN1733624A (en) * | 2005-06-28 | 2006-02-15 | 天津大学 | Photocatalytic oxidation reaction- membrane separation method for processing antibiotic industry waste water |
| RU2315720C2 (en) * | 2005-09-07 | 2008-01-27 | Общество с ограниченной ответственностью "Компания "ВЕНТОЛ" | Cross-flow contactor-ozonizer |
| CN103708641A (en) * | 2013-09-29 | 2014-04-09 | 武汉纺织大学 | Process for decoloration degradation of industrial organic wastewater through tandem catalytic oxidation |
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2014
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1733624A (en) * | 2005-06-28 | 2006-02-15 | 天津大学 | Photocatalytic oxidation reaction- membrane separation method for processing antibiotic industry waste water |
| RU2315720C2 (en) * | 2005-09-07 | 2008-01-27 | Общество с ограниченной ответственностью "Компания "ВЕНТОЛ" | Cross-flow contactor-ozonizer |
| CN103708641A (en) * | 2013-09-29 | 2014-04-09 | 武汉纺织大学 | Process for decoloration degradation of industrial organic wastewater through tandem catalytic oxidation |
Non-Patent Citations (1)
| Title |
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| 韩万玉等: "O3/BAF组合工艺深度处理制药废水试验研究", 《中国给水排水》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105541007A (en) * | 2015-12-23 | 2016-05-04 | 张宏伟 | Deep treatment method for electroplating wastewater |
| CN106927616A (en) * | 2015-12-29 | 2017-07-07 | 广东卓信环境科技股份有限公司 | Biological aerated filter sewage treatment integrated device and its processing method |
| CN110894130A (en) * | 2019-12-17 | 2020-03-20 | 内蒙古科技大学 | Device and method for treating phenol-containing coal chemical wastewater by using advanced oxidation method and immobilized white-rot fungi |
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Application publication date: 20141217 |