CN110054348A - A kind for the treatment of process of fluorine bacterium azoles pesticide wastewater - Google Patents
A kind for the treatment of process of fluorine bacterium azoles pesticide wastewater Download PDFInfo
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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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- 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
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
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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
- 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
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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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind for the treatment of process of fluorine bacterium azoles pesticide wastewater; the treatment process of fluorine bacterium azoles pesticide wastewater removes ammonia and again flocculating setting and ultra-filtration process by pretreatment, the removal of impurities of iron carbon reactor, flocculating setting, anaerobic digester, contact aerobic tank; obtained waste discharge meets emission regulation; COD numerical value is extremely low, content of organics is less; protection environment, the target of green production may be implemented.
Description
Technical field
The present invention relates to pesticide wastewater processing technology field, specially a kind of processing of fluorine bacterium azoles pesticide wastewater
Technique.
Background technique
The progress of agricultural production generally requires to promote crops smooth growth, yield to increase in crop growth
Each stage sprays corresponding pesticide, prevent and treat it is possible that or the diseases and pests of agronomic crop that has already appeared.Sterilization class at present
In crops triazole pesticide using commonplace, the especially types pesticide such as fluorine bacterium azoles, penconazole, a large amount of fluorine bacterium azoles agriculture
The production and preparation of medicine are easy to produce complicated component, salt content due to having a large amount of organic synthesis technique in production preparation process
High pesticide wastewater, direct emission are difficult to degrade, and are easy pollution environment, and many useful components in pesticide wastewater
Also because being wasted without recycling.
Chinese patent CN104230081B discloses a kind of paraquat pesticides waste water treatment process, it is characterised in that paraquat
Waste water (5-7MPa) pressure and at a temperature of (220-290 DEG C) in stills for air blowing, under the action of catalyst, using air in waste water
CN- and organic matter carry out oxidative degradation, the COD and CN- of waste water are greatly reduced after oxidation, then at stripping tower PH (12-14)
Under temperature (40-60 DEG C), under the action of catalyst, air stripping is passed through 3-5 hours by stripping tower bottom.By the ammonia in waste water
Nitrogen is recycled in the form of ammonia.It is re-fed into evaporator, is evaporated under temperature (60-80 DEG C), evaporation liquid is sent at biochemical system
Manage rear discharge up to standard.By cooling centrifugation, obtaining solid salinity can sell concentrate outside, and centrifuge mother liquor is sent to wastewater collection pond waiting
Evaporation next time.But in the invention, pesticides waste water treatment process complex steps, energy consumption is higher.
Chinese patent CN101913733B discloses a kind of method of dimethoate pesticide wastewater treatment.Light is carried out to it first to help
Fenton oxidation pre-processes 15-120 minutes, water outlet is diluted to two volumes after reaction, into Cyclic Activated Sludge System
It carries out biological treatment 5-8 hours；Dimethoate pesticide waste water only need to be by Fenton technology pretreatment and CAST technique two procedures；, but
It is that in the invention, pesticide wastewater processing cost is higher, recycling is incomplete.
Chinese patent CN102531216B discloses one kind 2,4-D pesticides waste water treatment process, including uses oily mutually extraction
Agent extraction wastewater removal partial organic substances, water phase enter adsorption system and further remove organic matter, then pass through nanofiltration membrane desalination,
Optionally include nanofiltration membrane cleaning step.It realizes to organic matter, the extraction of salt, concentration, separation and reuse in water body, in entirety
On, the process for cleanly preparing system of 2,4-D agricultural chemicals waste water quasi-zero emission processing is formed, but in the invention, abstraction impurity removal
Energy consumption is higher, and is easy waste of resource, not easy to operate.
In conclusion how to prepare a kind of pesticide wastewater treatment process, it is used for fluorine bacterium azoles production wastewater treatment, is realized
Resource recycling, and environment is protected, it is those skilled in the art's urgent problem.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind for the treatment of process of fluorine bacterium azoles pesticide wastewater, solves
The treatment process of fluorine bacterium azoles pesticide wastewater is not perfect at present, and not exclusively, waste discharge treatment process is multiple for effective component recycling
It is miscellaneous, the higher problem of energy consumption.
In order to achieve the goal above, the present invention is achieved by the following technical programs:
A kind for the treatment of process of fluorine bacterium azoles pesticide wastewater, the treatment process of fluorine bacterium azoles pesticide wastewater, including with
Lower step:
Fluorine bacterium azoles pesticide wastewater is aoxidized under the conditions of temperature is 245 DEG C~285 DEG C, utilizes hydroxide by step 1
Sodium solution absorbs the nitrogen and carbon dioxide that waste water decomposes, and obtains pretreated waste water；High-temperature oxydation can will be organic in waste water
Object decomposes, and sodium hydroxide solution is facilitated to absorb；
Step 2, step 1 gained pretreated waste water are reacted 40 minutes~55 minutes in iron carbon reactor, react heel row
It is added flocculant in waste water out, sedimentation 30 minutes~after sixty minutes, filter to obtain upper layer waste water；Iron carbon reactor can will contain phenyl ring
Compound, Long carbon chain organic compound Partial digestion, reduce the COD of waste water；Flocculant can remove small molecular weight impurity and hang
Floating object facilitates air lift to remove ammonia；
Step 3, the upper layer waste water in step 2 enter air lift pond except ammonia 60 minutes~120 minutes, and micropore continuously exposes in pond
Gas is kept for 120 minutes~240 minutes under anaerobe effect subsequently into anaerobic digester, finally enters catalytic oxidation
Pond is passed through oxygen, ammonia is further removed using aerobic microbiological 60 minutes~120 minutes；Micropore continuous aeration can promote ammonia
Volatilization；Under the action of anaerobe, macromolecule organic is degraded to small organic molecule, further divides for aerobic microbiological
Solution lays the foundation, while anaerobe can decompose nitrate etc. into one, further removes ammonia；Aerobic microbiological is further right
Small organic molecule is decomposed, is degraded, and removes ammonia again；
Step 4, flocculant is added again and settles 30 minutes~60 minutes for the aerobic waste water except after ammonia in step 3, filtrate
Using obtain after the ultrafiltration membrane ultrafiltration of 20nm~30nm can waste discharge.Flocculant can again will be after microbial degradation
Waste water sedimentation removes suspended matter and impurity, and by ultrafiltration, further improves water quality.
Further, in step 1, oxidation process under the conditions of temperature is 245 DEG C~285 DEG C specifically: fluorine bacterium azoles pesticide
Production waste water is warming up to 125 DEG C~135 DEG C with 5 DEG C/min~10 DEG C/min of rate, keeps the temperature 2 hours~3 hours, then with
10 DEG C/min~20 DEG C/min of rate is warming up to 245 DEG C~285 DEG C, aoxidizes 2 hours~4 hours.
Further, in step 1, the concentration of sodium hydroxide solution is 0.2mol/L~0.5mol/L.
Further, in step 2, in iron carbon reactor: iron content is 79%~83%, and carbon content is 14%~18%,
Palladium catalyst surplus.Palladium chtalyst can promote iron carbon primary battery quickly to be formed, stable environment, improve reaction rate.
Further, in iron carbon reactor: iron content 81%, carbon content 16%, palladium catalyst surplus.
Further, in step 2, the ratio that pretreated waste water is added in flocculant is 10kg:50L~60L.
Further, in step 2, flocculant is pressed by aluminium polychloride, alumina silicate, flyash, sodium sulfite, diatomite
1~2:0.8:0.5:0.3:0.6 of mass ratio composition.
Further, in step 3, into anaerobic digester before in conditioning tank, pH is adjusted with 0.5mol/L sulfuric acid solution
To 6.88~7.88.
Further, in step 3, oxygen flow is 1.5L/min~3.5L/min.
Further, in step 4, the ratio that flocculant is added again is 9kg:90L~100L.
The beneficial effects of the present invention are:
(1) treatment process of fluorine bacterium azoles pesticide wastewater of the present invention is heavy by pretreatment, the removal of impurities of iron carbon reactor, flocculation
Drop, anaerobic digester contact aerobic tank and again flocculating setting and ultra-filtration process, and obtained waste discharge meets discharge rule
Fixed, COD numerical value is extremely low, content of organics is less, and protection environment, the target of green production may be implemented；
(2) treatment process of fluorine bacterium azoles pesticide wastewater of the present invention adds special flocculant, and flocculating effect is good, can
To be substantially reduced COD content in fluorine bacterium azoles pesticide wastewater, while flocculating setting period, energy consumption can be reduced, reduce at
This investment；
(3) the treatment process processing step of fluorine bacterium azoles pesticide wastewater of the present invention is simple, easy to operate, energy conservation and environmental protection,
Process cycle is shorter, and cost input is few, better economic benefit, is suitble to be widely popularized.
Specific embodiment
In order to enable the purposes, technical schemes and advantages of technical solution of the present invention are clearer, below in conjunction with this
Invention specific embodiment carries out clear, complete description to the technical solution of the embodiment of the present invention.
It should be noted that embodiment of the present invention is only to realize preferred embodiment of the invention, to belonging to this
Invention general idea, and be only obvious change, be within the scope of protection of the invention within.
Embodiment 1
A kind for the treatment of process of fluorine bacterium azoles pesticide wastewater
The following steps are included:
Fluorine bacterium azoles pesticide wastewater is warming up to 125 DEG C with 5 DEG C/min of rate, keeps the temperature 2 hours, then by step 1
245 DEG C are warming up to 10 DEG C/min of rate, is aoxidized 2 hours, is absorbed using the sodium hydroxide solution that concentration is 0.2mol/L useless
The nitrogen and carbon dioxide of water decomposition, obtain pretreated waste water；
Step 2, step 1 gained pretreated waste water are reacted 40 minutes in iron carbon reactor, are discharged in waste water after reaction
Flocculant is added and filters to obtain upper layer waste water after sedimentation 30 minutes；
More than, in iron carbon reactor: iron content 79%, carbon content 18%, palladium catalyst 3%；Flocculant is added pre-
The ratio for handling waste water is 10kg:50L；Flocculant presses matter by aluminium polychloride, alumina silicate, flyash, sodium sulfite, diatomite
Amount is formed than 1:0.8:0.5:0.3:0.6.
Step 3, the upper layer waste water in step 2 enter air lift pond except ammonia 60 minutes, micropore continuous aeration and are adjusting in pond
Pond is saved, adjusts pH to 6.88 with 0.5mol/L sulfuric acid solution, subsequently into anaerobic digester, is kept under anaerobe effect
120 minutes, contact-oxidation pool is finally entered, is passed through oxygen, is further removed using aerobic microbiological ammonia 60 minutes；
More than, oxygen flow 1.5L/min.
Step 4, flocculant is added again and settles 30 minutes for the aerobic waste water except after ammonia in step 3, and filtrate uses 20nm
Ultrafiltration membrane ultrafiltration after obtain can waste discharge.
More than, the ratio that flocculant is added again is 9kg:90L.
Embodiment 2
A kind for the treatment of process of fluorine bacterium azoles pesticide wastewater
The following steps are included:
Fluorine bacterium azoles pesticide wastewater is warming up to 135 DEG C with 10 DEG C/min of rate, keeps the temperature 3 hours, so by step 1
285 DEG C are warming up to 20 DEG C/min of rate afterwards, is aoxidized 4 hours, is absorbed using the sodium hydroxide solution that concentration is 0.5mol/L
The nitrogen and carbon dioxide that waste water decomposes, obtain pretreated waste water；
Step 2, step 1 gained pretreated waste water are reacted 55 minutes in iron carbon reactor, are discharged in waste water after reaction
Flocculant is added, sedimentation after sixty minutes, filters to obtain upper layer waste water；
More than, in iron carbon reactor: iron content 83%, carbon content 14%, palladium catalyst 3%；Flocculant is added pre-
The ratio for handling waste water is 10kg:60L；Flocculant presses matter by aluminium polychloride, alumina silicate, flyash, sodium sulfite, diatomite
Amount is formed than 2:0.8:0.5:0.3:0.6.
Step 3, the upper layer waste water in step 2 enter air lift pond except ammonia 120 minutes, micropore continuous aeration and are adjusting in pond
Pond is saved, adjusts pH to 7.88 with 0.5mol/L sulfuric acid solution, subsequently into anaerobic digester, is kept under anaerobe effect
240 minutes, contact-oxidation pool is finally entered, is passed through oxygen, is further removed using aerobic microbiological ammonia 120 minutes；
More than, oxygen flow 3.5L/min.
Step 4, flocculant is added again and settles 60 minutes for the aerobic waste water except after ammonia in step 3, and filtrate uses 30nm
Ultrafiltration membrane ultrafiltration after obtain can waste discharge.
More than, the ratio that flocculant is added again is 9kg:100L.
Embodiment 3
A kind for the treatment of process of fluorine bacterium azoles pesticide wastewater
The following steps are included:
Fluorine bacterium azoles pesticide wastewater is warming up to 127 DEG C with 6 DEG C/min of rate, keeps the temperature 3 hours, then by step 1
255 DEG C are warming up to 12 DEG C/min of rate, is aoxidized 4 hours, is absorbed using the sodium hydroxide solution that concentration is 0.3mol/L useless
The nitrogen and carbon dioxide of water decomposition, obtain pretreated waste water；
Step 2, step 1 gained pretreated waste water are reacted 45 minutes in iron carbon reactor, are discharged in waste water after reaction
Flocculant is added, sedimentation after forty minutes, filters to obtain upper layer waste water；
More than, in iron carbon reactor: iron content 80%, carbon content 15%, palladium catalyst 5%；Flocculant is added pre-
The ratio for handling waste water is 10kg:60L；Flocculant presses matter by aluminium polychloride, alumina silicate, flyash, sodium sulfite, diatomite
Amount is formed than 1.2:0.8:0.5:0.3:0.6.
Step 3, the upper layer waste water in step 2 enter air lift pond except ammonia 70 minutes, micropore continuous aeration and are adjusting in pond
Pond is saved, adjusts pH to 6.93 with 0.5mol/L sulfuric acid solution, subsequently into anaerobic digester, is kept under anaerobe effect
140 minutes, contact-oxidation pool is finally entered, is passed through oxygen, is further removed using aerobic microbiological ammonia 80 minutes；
More than, oxygen flow 2.0L/min.
Step 4, flocculant is added again and settles 40 minutes for the aerobic waste water except after ammonia in step 3, and filtrate uses 22nm
Ultrafiltration membrane ultrafiltration after obtain can waste discharge.
More than, the ratio that flocculant is added again is 9kg:100L.
Embodiment 4
A kind for the treatment of process of fluorine bacterium azoles pesticide wastewater
The following steps are included:
Fluorine bacterium azoles pesticide wastewater is warming up to 132 DEG C with 8 DEG C/min of rate, keeps the temperature 2 hours, then by step 1
275 DEG C are warming up to 18 DEG C/min of rate, is aoxidized 3.5 hours, is absorbed using the sodium hydroxide solution that concentration is 0.4mol/L
The nitrogen and carbon dioxide that waste water decomposes, obtain pretreated waste water；
Step 2, step 1 gained pretreated waste water are reacted 52 minutes in iron carbon reactor, are discharged in waste water after reaction
Flocculant is added and filters to obtain upper layer waste water after sedimentation 50 minutes；
More than, in iron carbon reactor: iron content 81%, carbon content 16%, palladium catalyst 3%；Flocculant is added pre-
The ratio for handling waste water is 10kg:50L；Flocculant presses matter by aluminium polychloride, alumina silicate, flyash, sodium sulfite, diatomite
Amount is formed than 1.8:0.8:0.5:0.3:0.6.
Step 3, the upper layer waste water in step 2 enter air lift pond except ammonia 110 minutes, micropore continuous aeration and are adjusting in pond
Pond is saved, adjusts pH to 7.72 with 0.5mol/L sulfuric acid solution, subsequently into anaerobic digester, is kept under anaerobe effect
220 minutes, contact-oxidation pool is finally entered, is passed through oxygen, is further removed using aerobic microbiological ammonia 110 minutes；
More than, oxygen flow 3.0L/min.
Step 4, flocculant is added again and settles 50 minutes for the aerobic waste water except after ammonia in step 3, and filtrate uses 28nm
Ultrafiltration membrane ultrafiltration after obtain can waste discharge.
More than, the ratio that flocculant is added again is 9kg:90L.
Embodiment 5
A kind for the treatment of process of fluorine bacterium azoles pesticide wastewater
The following steps are included:
Fluorine bacterium azoles pesticide wastewater is warming up to 130 DEG C with 8 DEG C/min of rate, keeps the temperature 2.5 hours, so by step 1
265 DEG C are warming up to 15 DEG C/min of rate afterwards, is aoxidized 3 hours, is absorbed using the sodium hydroxide solution that concentration is 0.3mol/L
The nitrogen and carbon dioxide that waste water decomposes, obtain pretreated waste water；
Step 2, step 1 gained pretreated waste water are reacted 50 minutes in iron carbon reactor, are discharged in waste water after reaction
Flocculant is added and filters to obtain upper layer waste water after sedimentation 45 minutes；
More than, in iron carbon reactor: iron content 81%, carbon content 16%, palladium catalyst 3%；Flocculant is added pre-
The ratio for handling waste water is 10kg:55L；Flocculant presses matter by aluminium polychloride, alumina silicate, flyash, sodium sulfite, diatomite
Amount is formed than 1.5:0.8:0.5:0.3:0.6.
Step 3, the upper layer waste water in step 2 enter air lift pond except ammonia 100 minutes, micropore continuous aeration and are adjusting in pond
Pond is saved, adjusts pH to 7.34 with 0.5mol/L sulfuric acid solution, subsequently into anaerobic digester, is kept under anaerobe effect
160 minutes, contact-oxidation pool is finally entered, is passed through oxygen, is further removed using aerobic microbiological ammonia 100 minutes；
More than, oxygen flow 2.5L/min.
Step 4, flocculant is added again and settles 45 minutes for the aerobic waste water except after ammonia in step 3, and filtrate uses 25nm
Ultrafiltration membrane ultrafiltration after obtain can waste discharge.
More than, the ratio that flocculant is added again is 9kg:95L.
Experimental example
The fluorine bacterium azoles pesticide wastewater discharge of 1~5 treatment process of embodiment of the present invention processing is detected, is as a result seen
Table 1:
1 embodiment of the present invention of table, 1~5 treatment process handles fluorine bacterium azoles pesticide wastewater result
| Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | |
| pH | 6.62 | 6.58 | 6.80 | 6.73 | 6.75 |
| COD(mg/L) | 89.3 | 85.4 | 92.1 | 93.5 | 96.4 |
| BOD(mg/L) | 17.6 | 14.6 | 16.8 | 15.9 | 19.0 |
| NH3-N(mg/L) | 10.6 | 12.8 | 14.0 | 11.2 | 9.5 |
The fluorine bacterium azoles pesticide wastewater of 1~5 treatment process of embodiment of the present invention processing as can be seen from Table 1, row
It puts and meets agricultural chemicals waste water emission regulation, COD, BOD, NH of treated fluorine bacterium azoles pesticide wastewater3The content of-N compared with
It is low, it can trust discharge, not can cause environmental pollution, ecology will not be destroyed.
These are only the preferred embodiment of the present invention, is not intended to restrict the invention, for those skilled in the art
For member, the invention may be variously modified and varied.All within the spirits and principles of the present invention, it is made it is any modification,
Equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind for the treatment of process of fluorine bacterium azoles pesticide wastewater, which is characterized in that the place of the fluorine bacterium azoles pesticide wastewater
Science and engineering skill, comprises the following steps that
Step 1 aoxidizes fluorine bacterium azoles pesticide wastewater under the conditions of temperature is 245 DEG C~285 DEG C, molten using sodium hydroxide
Liquid absorbs the nitrogen and carbon dioxide that waste water decomposes, and obtains pretreated waste water；
Step 2, step 1 gained pretreated waste water are reacted 40 minutes~55 minutes in iron carbon reactor, are discharged after reaction useless
It is added flocculant in water, sedimentation 30 minutes~after sixty minutes, filter to obtain upper layer waste water；
Step 3, the upper layer waste water in step 2 enter air lift pond except ammonia 60 minutes~120 minutes, micropore continuous aeration in pond,
Subsequently into anaerobic digester, is kept for 120 minutes~240 minutes under anaerobe effect, finally enters contact-oxidation pool,
It is passed through oxygen, ammonia is further removed using aerobic microbiological 60 minutes~120 minutes；
Step 4, flocculant is added again and settles 30 minutes~60 minutes for the aerobic waste water except after ammonia in step 3, and filtrate uses
Obtaining after the ultrafiltration membrane ultrafiltration of 20nm~30nm can waste discharge.
2. treatment process as described in claim 1, which is characterized in that in step 1, it is described temperature be 245 DEG C~285 DEG C
Under the conditions of oxidation process specifically: fluorine bacterium azoles pesticide wastewater is warming up to 125 DEG C with 5 DEG C/min~10 DEG C/min of rate
~135 DEG C, 2 hours~3 hours are kept the temperature, is then warming up to 245 DEG C~285 DEG C with 10 DEG C/min~20 DEG C/min of rate,
Oxidation 2 hours~4 hours.
3. treatment process as described in claim 1, which is characterized in that in step 1, the concentration of the sodium hydroxide solution is
0.2mol/L~0.5mol/L.
4. treatment process as described in claim 1, which is characterized in that in step 2, in the iron carbon reactor: iron content is
79%~83%, carbon content is 14%~18%, palladium catalyst surplus.
5. treatment process as claimed in claim 4, which is characterized in that in the iron carbon reactor: iron content 81%, carbon contains
Amount is 16%, palladium catalyst surplus.
6. treatment process as described in claim 1, which is characterized in that in step 2, pretreated waste water is added in the flocculant
Ratio be 10kg:50L~60L.
7. treatment process as described in claim 1, which is characterized in that in step 2, the flocculant is by aluminium polychloride, silicon
Sour aluminium, flyash, sodium sulfite, diatomite 1~2:0.8:0.5:0.3:0.6 in mass ratio composition.
8. treatment process as described in claim 1, which is characterized in that in step 3, the anaerobic digester that enters exists before
Conditioning tank adjusts pH to 6.88~7.88 with 0.5mol/L sulfuric acid solution.
9. treatment process as described in claim 1, which is characterized in that in step 3, the oxygen flow be 1.5L/min~
3.5L/min。
10. treatment process as described in claim 1, which is characterized in that in step 4, the ratio that flocculant is added again
For 9kg:90L~100L.
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|---|---|---|---|---|
| EP2365941A1 (en) * | 2008-10-15 | 2011-09-21 | The University Of Queensland | Treatment of solutions or wastewater |
| CN102838195A (en) * | 2012-09-14 | 2012-12-26 | 大连格兰清水环境工程有限公司 | Composite flocculant for sewage treatment |
| CN103112994A (en) * | 2013-02-06 | 2013-05-22 | 上海问鼎环保科技有限公司 | Method for treating pesticide wastewater |
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