CN106186556A - A kind of ozone Oxidation Treatment chlopyrifos produces the method for waste water - Google Patents

A kind of ozone Oxidation Treatment chlopyrifos produces the method for waste water Download PDF

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CN106186556A
CN106186556A CN201610741899.1A CN201610741899A CN106186556A CN 106186556 A CN106186556 A CN 106186556A CN 201610741899 A CN201610741899 A CN 201610741899A CN 106186556 A CN106186556 A CN 106186556A
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waste water
chlopyrifos
produces
oxidation treatment
ozone oxidation
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CN106186556B (en
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戴百雄
熊传宗
贺丛国
刘兵
罗斌
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HUBEI BENXING AGROCHEMICAL CO Ltd
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HUBEI BENXING AGROCHEMICAL CO Ltd
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/78Treatment of water, waste water, or sewage by oxidation with ozone
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/001Processes for the treatment of water whereby the filtration technique is of importance
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/281Treatment of water, waste water, or sewage by sorption using inorganic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/66Treatment of water, waste water, or sewage by neutralisation; pH adjustment
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/72Treatment of water, waste water, or sewage by oxidation
    • C02F1/725Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F2001/007Processes including a sedimentation step
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Water Treatment By Sorption (AREA)
  • 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)

Abstract

The present invention provides a kind of method that ozone Oxidation Treatment chlopyrifos produces waste water, including step: (1) acidizing pretreatment: utilize one or more the regulation chlopyrifos in acid waste water, hydrochloric acid, sulphuric acid to produce waste water so that it is pH is 2~3;(2) settlement separate: acidified pretreated chlopyrifos produces waste water and produces a large amount of precipitums, by filtering or standing, remove in waste water precipitum and recycle;(3) quick lime neutralizes, (4) catalytic ozonation: the clear liquid after neutralization enters the gas-liquid reactor equipped with filler, is passed through ozone 20mim~150min, (5) sorbent treatment, and (6) decolour.The method that the present invention proposes, efficiently solves chlopyrifos and produces waste water after treatment, the phenomenons such as Exposure to Sunlight color reddens, irritant abnormal smells from the patient.Using after catalytic ozonation technique, in waste water, the Organic substance of difficult degradation is oxidized, decompose, and COD declines substantially, and clearance reaches 92%, and total phosphorus content has declined.

Description

A kind of ozone Oxidation Treatment chlopyrifos produces the method for waste water
Technical field
The invention belongs to purification of waste water field, be specifically related to a kind of method using catalysed oxidation processes to purify waste water.
Background technology
13 Plan idea environmental improvement basis systems, set up the enterprise's discharge permit system covering all stationary sources Degree, establishes and improve environmental monitoring system.Chlopyrifos has the features such as wide spectrum, efficient, low-residual and hypotoxicity, has insect good Good tag, fumigate, stomach toxicity etc. acts on.Applicable industry production method major part is Aqueous phase, produces substantial amounts of industrial wastewater.Should Waste water Main Ingredients and Appearance has: sodium chloride, 4 chloro pyridine, 3,5,6-trichloro pyridyl sodium alcoholate, surfactant, chlopyrifos, ethylmercury chloride Thing and derivant etc. thereof.Being characterized in that salinity is high, waste water color bronzing, complicated, processing cost is high, difficult etc..
Chinese invention patent (ZL201110420347.8) discloses a kind of chlopyrifos and produces the processing method of waste water, at it Reason step is as follows: (1) pH value regulates: utilize sulfhydrylation acid waste water regulation chlopyrifos to produce waste water to acid;(2) Fenton oxygen Change: the waste water after step (1) regulation pH value is introduced Fenton oxidation pond and aoxidizes;(3) neutralize, flocculate and filter: will step Suddenly the waste water after (2) oxidation introduces neutralization pond, and Xiang Chizhong adds quick lime and is neutralized, and produces flocculation sediment, then carries out Filter;(4) activated carbon adsorption: the waste water after step (3) being filtered introduces active carbon adsorption column and adsorbs.The method is to waste water The removal of middle phosphorus is the most complete.
At present, the method administering chlopyrifos waste water both at home and abroad mainly has: triple effect evaporation method, Fenton oxidation+biochemistry AAO technique Method etc..Triple effect evaporation method is bigger due to wastewater flow rate, although water quality treatment reaches discharging standards, but energy consumption is high, produces waste gas Waste residue, produces secondary pollution, and processing cost is high.Though biochemical treatment process is low energy consumption and non-secondary pollution, but to high concentration salt Chlopyrifos waste water, big to Ecotoxicology, deal with the most difficult.
Ozonation, can become micromolecular compound effectively to be removed oxidation operation.Ozone can be by residual in waste water The macromole, the long-chain that stay, being difficult to biodegradable organic moiety and be direct oxidation into carbon dioxide and water, decomposed is little point Sub-easily biological-degradable material, destroys the most biodegradable organic structure, reduces toxicity, improves B/C ratio.Research both at home and abroad Focus is used for electro-catalytic oxidation technology, is also based on efficiently utilizing the oxidation mechanisms of ozone, is improved.Patent of the present invention is adopted It is main by ozone oxidation, processes the mode combined with the method such as other physical chemistry, process chlopyrifos to greatest extent and produce Waste water so that it is reach discharge standard.
Summary of the invention
It is an object of the invention to overcome the weak point of the existence of prior art, it is provided that a kind of ozone Oxidation Treatment is poisoned with poison Ticks produces the method for waste water.
Realizing above-mentioned purpose technical scheme of the present invention is:
A kind of ozone Oxidation Treatment chlopyrifos produces the method for waste water, including step:
(1) acidizing pretreatment: utilize one or more the regulation chlopyrifos in acid waste water, hydrochloric acid, sulphuric acid to produce waste water, Making its pH is 2~3;Described acid waste water is sulfhydrylation acid waste water;
(2) settlement separate: acidified pretreated chlopyrifos produces waste water and produces a large amount of precipitums, by filtering or quiet Put, remove in waste water precipitum and recycle;
(3) quick lime neutralizes: isolated clear liquid quick lime is neutralized, and after neutralization, pH is maintained at 11~12;
(4) catalytic ozonation: clear liquid after neutralization enters the gas-liquid reactor equipped with filler, be passed through ozone 20mim~ 150min,
(5) sorbent treatment: adsorb with adsorbent, carries out solid-liquid separation by adsorbent;
(6), decolouring: the waste water after sorbent treatment adds decolorising agent, make decolorising agent and waste water 30~ 120min, isolates decolorising agent.
In the method for the invention, it is to produce in the production process with Aqueous Phase Synthesis of Chlorpyrifos that described chlopyrifos produces waste water Raw waste water.In this waste water, major pollutants are sodium chloride, sodium carbonate, diethylaluminum monochloride analyte, 4 chloro pyridine and chlopyrifos, PH value be 8-9.5, COD be 9000-15000mg/L, total phosphorus content is 1000-1500mg/L.
Wherein, in described step (2), use flame filter press to filter after producing precipitum, or take after sucking filtration, or standing Clear liquid.
Wherein, in described step (4), catalytic ozonation equipment therefor is the gas-liquid reactor equipped with filler, and filler is The carrier of supported catalyst, described carrier is the one in aluminium oxide, silicon oxide, zeolite or pottery, described catalyst be copper, One or more in cobalt, manganese, copper oxide, manganese oxide, cobalt oxide.
Further, described gas-liquid reactor is prepared by oxidation and corrosion material, can be plastic material, or liner The stainless steel of fluoroplastics;Described filler is the ceramic ring of supported catalyst, described catalyst manganese oxide and cobalt oxide quality Ratio is 2~4:1.
Wherein, in described step (4), ozone and air are configured to the air-flow of ozone content 50-200mg/L and are passed through, and are passed through Speed be 10~60L/L h (i.e. unit volume reactor is passed through the speed of air-flow).
In described step (5), described adsorbent is Alumen, activated alumina, crystal aluminum chloride, activated carbon, silica gel, diatom One or more in soil, adsorbent is filled in filled column, and it is 30~100min that waste water flows through the time of filled column.
In described step (6), described decolorising agent is sodium sulfite, one in aqueous sodium hypochlorite solution, hydrogen peroxide or Several, the quality that decolorising agent adds accounts for the 0.1~1% of wastewater quality.
After step (6) desolventing technology, filtering, regulation pH value is 6~9.
The beneficial effects of the present invention is:
(1), the present invention propose method, efficiently solve chlopyrifos produce waste water after treatment, Exposure to Sunlight color reddens, The phenomenons such as irritant abnormal smells from the patient.
(2), after the present invention uses catalytic ozonation technique, in waste water, the Organic substance of difficult degradation is oxidized, decompose, COD Declining substantially, clearance reaches 92%, and total phosphorus content has declined.
(3), the present invention use gas-liquid reaction apparatus, use oxidation and corrosion material to prepare, filler and carrier are easy to point Dress, and can be used in series, disposal ability is big.
(4), the present invention has recycled chlopyrifos and has produced 3,5,6-pyridine sodium alkoxide in waste water, described method step (2) Middle coagulant precipitation layer after treatment, continues condensation reaction with diethylaluminum monochloride, can obtain the chlopyrifos of certain content, save life Produce cost.
(5), further, acidizing pretreatment of the present invention utilizes in producing the isooctyl thioglycolate acidified waste water produced, Reduce the treating capacity of sulfydryl esterification acid waste water.
Accompanying drawing explanation
Fig. 1 is the process chart that ozone Oxidation Treatment chlopyrifos produces waste water.
Fig. 2 is the structural representation of this gas-liquid reactor.
In figure, 1 is gas-liquid reactor main body, and 2 prop up support plate for aeration, and 3 is filler, and 401 is waste water inlet, and 402 is waste water Outlet, 502 is air inlet, 501 gas outlets.
Detailed description of the invention
Below by most preferred embodiment, the present invention is described.Those skilled in the art institute it should be understood that, embodiment is only used for Illustrate rather than for limiting the scope of the present invention.
In embodiment, if no special instructions, means used are the means that this area is conventional.
Embodiment 1
A kind of method using ozone Oxidation Treatment chlopyrifos to produce waste water, gives up to generation in certain chlopyrifos production process Water processes.
The method includes the steps of:
(1), take 500g chlopyrifos produce waste water in 2000ml beaker, add hydrochloric acid, regulation pH be 2;
(2), by above-mentioned waste water sand core funnel sucking filtration, filtrate, filter cake recycling are obtained;
(3), use in quick lime and above-mentioned filtrate, obtain clear liquid after neutralization for next procedure;
(4), select the filler device of fluoroplastics material as reaction unit (diameter 0.5 meter), in laboratory conditions, adopt Doing carrier with pottery, it is 3:1 that manganese oxide, cobalt oxide do the mass ratio of catalyst, manganese oxide and cobalt oxide, step (3) is processed After waste water be passed through in gas-liquid reactor, and in order to improve reaction efficiency, reaction unit is put and vibrates on the oscillator;It is passed through smelly Oxygen stream 1h, in air-flow, ozone concentration is 100mg/l, and the flow velocity of air-flow is 15L/L h.Air-flow and waste water are counter current contacting.
(5), filtering above-mentioned waste water with activated carbon packed column, pillar flow velocity is 15ml/min, it is ensured that waste water is at post In son, the time of staying is 30 minutes.It is about 5 through the water crystal aluminum chloride regulation pH of activated carbon pillar, filters off residue, obtain Clear liquid.
(6), the clear liquid sodium sulfite that adds 0.5%, stir 30 minutes, filter after standing, regulation pH is 7, after give birth to Change subsequent treatment.
Waste water index before and after process is as follows:
The present embodiment uses the method to process chlopyrifos and produces waste water, and COD clearance reaches 92.8%, and processed waste water is colourless Free from extraneous odour.Waste water after process is placed on observed under daylight three days, does not observe rubescent phenomenon.
Embodiment 2
A kind of method using ozone Oxidation Treatment chlopyrifos to produce waste water, gives up to generation in certain chlopyrifos production process Water processes.
The method includes the steps of:
(1), take 500g chlopyrifos and produce waste water in 2000ml beaker, add in isooctyl thioglycolate production process Acid waste water, regulation pH is 2;
(2), above-mentioned waste water sand core funnel is filtered, obtain filtrate, filter cake recycling;
(3), use in quick lime and above-mentioned filtrate, obtain clear liquid after neutralization for next procedure;
(4), selecting fluorine moulding material to do reaction unit, use pottery to do carrier, manganese oxide, cobalt oxide do filler, manganese oxide Being 3:1 with the mass ratio of cobalt oxide, proceed in gas-liquid reactor by above-mentioned (3) waste water, be passed through ozone 2h, ozone concentration is 100mg/l, flow velocity is 15L/L h.
(5), filtering above-mentioned waste water with activated carbon packed column, pillar flow velocity is 15ml/min, it is ensured that waste water is at post In son, the time of staying was at 30 minutes.It is about 5 through the water crystal aluminum chloride regulation pH of activated carbon pillar, filters off residue, obtain Clear liquid.
(6), the clear liquid sodium sulfite that adds 0.5%, stir 30 minutes, filter after standing, regulation pH is 7, laggard passes through Biochemical subsequent treatment.
Waste water index before and after process is as follows:
The present embodiment 2 use the method process chlopyrifos produce waste water, COD clearance reaches 93.5%, processed waste water without Color free from extraneous odour.Waste water after process is placed on observed under daylight three days, does not observe rubescent phenomenon.
Embodiment 3
A kind of method using ozone Oxidation Treatment chlopyrifos to produce waste water, gives up to generation in certain chlopyrifos production process Water processes.
The method includes the steps of:
(1), take 500g chlopyrifos produce waste water in 2000ml beaker, add sulphuric acid, regulation pH be 2;
(2), above-mentioned waste water sand core funnel is filtered, obtain filtrate, filter cake recycling;
(3), use in quick lime and above-mentioned filtrate, obtain clear liquid after neutralization for next procedure;
(4), select the filler device of fluoroplastics material as reaction unit, use pottery to do carrier, manganese oxide, cobalt oxide The mass ratio doing filler, manganese oxide and cobalt oxide is 3:1, proceeds in gas-liquid reactor by above-mentioned (3) waste water, is passed through ozone 1h, Ozone concentration is 100mg/l, and flow velocity is 15L/L h.
(5), filtering above-mentioned waste water with unmodified packed column, pillar flow velocity is 15ml/min, it is ensured that waste water is at pillar The middle time of staying was at 30 minutes.It is about 5 through the water crystal aluminum chloride regulation pH of activated carbon pillar, filters off residue, obtain clear Liquid.
(6), the clear liquid hydrogen peroxide that adds 0.5%, stir 30 minutes, filter after standing, regulation pH is 7, laggard biochemistry of passing through Subsequent treatment.
Waste water index before and after process is as follows:
The present embodiment 3 use the method process chlopyrifos produce waste water, COD clearance reaches 92.9%, processed waste water without Color free from extraneous odour.Waste water after process is placed on observed under daylight three days, does not observe rubescent phenomenon.
Embodiment 4
Use Chinese invention patent (ZL201110420347.8) processing method of waste water " a kind of chlopyrifos produce ", to The embodiment of the present application 3 processes according to the method for this patent Example 4 with the waste water produced in a collection of chlopyrifos production process.
Waste water index before and after process is as follows:
" processing method of a kind of chlopyrifos production waste water " patent processes chlopyrifos and produces waste water, and COD clearance reaches 93.6%, but bad to the removal effect of total phosphorus.Waste water after process observes that water is rubescent after being placed on daylight one day.
Embodiment 5
A kind of method using ozone Oxidation Treatment chlopyrifos to produce waste water, gives up to generation in certain chlopyrifos production process Water processes.
(1) during plant-scale chlopyrifos produces waste water, adding isooctyl thioglycolate acidified waste water, regulation pH is 2;
(2), above-mentioned waste water flame filter press is filtered, obtain filtrate, filter cake recycling;
(3), use in quick lime and above-mentioned filtrate, obtain clear liquid after neutralization for next procedure;
(4), selecting 316L stainless steel to do gas-liquid reactor 1, reaction unit is 316L rustless steel (diameter 2.5 meters), Inner lining fluoroplastics (see Fig. 2).Filler 3 in gas-liquid reactor 1 is to use ceramic ring to do carrier, and load manganese oxide, cobalt oxide do The mass ratio of catalyst, manganese oxide and cobalt oxide is 3:1, and filler is placed on aeration and props up between support plate 2.Waste water is from waste water inlet 401 Entering reactor, discharge from wastewater outlet 402, air-flow enters from air inlet 502, and gas outlet 501 goes out, and waste water counter current contacting.
Waste water after step (3) being processed proceeds in gas-liquid reactor, is passed through streams of ozone 2h, the ozone concentration in air-flow For 100mg/l, air-flow velocity is 60L/L h.
(5), filtering above-mentioned waste water with activated carbon packed column, pillar flow velocity is 15ml/min, it is ensured that waste water is at post In son, the time of staying was at 30 minutes.It is about 5 through the water crystal aluminum chloride regulation pH of activated carbon pillar, filters off residue, obtain Clear liquid.
(6), the clear liquid hydrogen peroxide that adds 0.5%, stir 30 minutes, bag type filtering machine filters, and regulation pH is 7.Laggard pass through Biochemical subsequent treatment.Waste water after process is placed on observed under daylight three days, does not observe rubescent phenomenon.
Waste water index before and after process is as follows:
Above embodiment is only to be described the preferred embodiment of the present invention, not enters the scope of the present invention Row limits, on the premise of designing spirit without departing from the present invention, and this area ordinary skill technical staff technical side to the present invention Various modification that case is made and improvement, all should fall in the protection domain that claims of the present invention determines.

Claims (8)

1. the method that an ozone Oxidation Treatment chlopyrifos produces waste water, it is characterised in that include step:
(1) acidizing pretreatment: utilize one or more the regulation chlopyrifos in acid waste water, hydrochloric acid, sulphuric acid to produce waste water so that it is PH is 2~3;Described acid waste water is sulfhydrylation acid waste water;
(2) settlement separate: acidified pretreated chlopyrifos produces waste water and produces a large amount of precipitums, by filtering or standing, Remove in waste water precipitum and recycle;
(3) quick lime neutralizes: isolated clear liquid quick lime is neutralized, and after neutralization, pH is maintained at 11~12;
(4) catalytic ozonation: clear liquid after neutralization enters the gas-liquid reactor equipped with filler, be passed through ozone 20mim~ 150min,
(5) sorbent treatment: adsorb with adsorbent, carries out solid-liquid separation by adsorbent;
(6) decolouring: add decolorising agent in the waste water after sorbent treatment, make decolorising agent and waste water 30~120min, point Separate out decolorising agent.
Ozone Oxidation Treatment chlopyrifos the most according to claim 1 produces the method for waste water, it is characterised in that: described step (2), in, use flame filter press to filter after producing precipitum, or take supernatant after sucking filtration, or standing.
Ozone Oxidation Treatment chlopyrifos the most according to claim 1 produces the method for waste water, it is characterised in that: described step (4) in, catalytic ozonation equipment therefor is the gas-liquid reactor equipped with filler, and filler is the carrier of supported catalyst, described Carrier is the one in aluminium oxide, silicon oxide, zeolite or pottery, described catalyst be copper, cobalt, manganese, silver, copper oxide, manganese oxide, One or more in cobalt oxide.
Ozone Oxidation Treatment chlopyrifos the most according to claim 3 produces the method for waste water, it is characterised in that: described gas-liquid Reactor is the stainless steel of plastics or inner lining fluoroplastics;Described filler is the ceramic ring of supported catalyst, described catalyst Middle manganese oxide and cobalt oxide mass ratio are 2~4:1.
Ozone Oxidation Treatment chlopyrifos the most according to claim 1 produces the method for waste water, it is characterised in that: described step (4) in, ozone and air are configured to the air-flow of ozone content 50~200mg/L and are passed through, and the speed being passed through is 10~60L/L h.
Ozone Oxidation Treatment chlopyrifos the most according to claim 1 produces the method for waste water, it is characterised in that: described step (5) in, described adsorbent is Alumen, activated alumina, crystal aluminum chloride, activated carbon, the one or many in silica gel, kieselguhr Kind, adsorbent is filled in filled column, and it is 30~100min that waste water flows through the time of filled column.
Ozone Oxidation Treatment chlopyrifos the most according to claim 1 produces the method for waste water, it is characterised in that: described step (6) in, described decolorising agent is sodium sulfite, one or more in aqueous sodium hypochlorite solution, hydrogen peroxide, and decolorising agent adds Quality accounts for the 0.1~1% of wastewater quality.
Ozone Oxidation Treatment chlopyrifos the most according to claim 1 produces the method for waste water, it is characterised in that: through step (6) after desolventing technology, filtering, regulation pH value is 6~9.
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CN110240352A (en) * 2019-05-15 2019-09-17 生态环境部南京环境科学研究所 A kind of method of thermal activation persulfate removal water body Chlorpyrifos
CN110683694A (en) * 2019-09-06 2020-01-14 山东埃森化学有限公司 Method for treating ethyl chloride production wastewater by ozone oxidation method
CN112777653A (en) * 2020-12-31 2021-05-11 哈尔滨工业大学(深圳) Method for quickly decoloring azo dye wastewater

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Publication number Priority date Publication date Assignee Title
CN110240352A (en) * 2019-05-15 2019-09-17 生态环境部南京环境科学研究所 A kind of method of thermal activation persulfate removal water body Chlorpyrifos
CN110683694A (en) * 2019-09-06 2020-01-14 山东埃森化学有限公司 Method for treating ethyl chloride production wastewater by ozone oxidation method
CN112777653A (en) * 2020-12-31 2021-05-11 哈尔滨工业大学(深圳) Method for quickly decoloring azo dye wastewater

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