CN107337282A - The artificial wet land system and processing method of low concentration wastewater are butchered in processing - Google Patents
The artificial wet land system and processing method of low concentration wastewater are butchered in processing Download PDFInfo
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- CN107337282A CN107337282A CN201710785251.9A CN201710785251A CN107337282A CN 107337282 A CN107337282 A CN 107337282A CN 201710785251 A CN201710785251 A CN 201710785251A CN 107337282 A CN107337282 A CN 107337282A
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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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/22—Nature of the water, waste water, sewage or sludge to be treated from the processing of animals, e.g. poultry, fish, or parts thereof
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Abstract
The invention discloses the artificial wet land system and processing method that low concentration wastewater is butchered in a kind of processing, including, low concentration wastewater will be butchered artificial wet land system is flowed into by water distributor, low concentration wastewater is butchered from top to bottom respectively by plantation layer, organic matter purifying layer, nitrogen phosphorus adsorption layer, gravel collection water layer, the gravel collection water layer carries out filtering to sewage and catchmented, and the water outlet after purification is discharged by perforated drain pipe；Low concentration slaughtering wastewater is handled by the artificial wet land system of the present invention, can comprehensively it be handled butchering low concentration wastewater, and pass through the nitrogen phosphorus adsorption layer and organic matter purifying layer of the present invention, make after wastewater treatment that nitrogen, phosphorus, heavy metal, organic matter equal size significantly lower in water outlet, solve the problems, such as that nitrogen in low concentration wastewater, phosphorus, heavy metal, feeding organic matter etc. are exceeded well.
Description
Technical field
The present invention relates to the system and method that low concentration wastewater is butchered in a kind of processing, and in particular to processing is butchered low concentration and given up
The artificial wet land system and processing method of water.
Background technology
Scale slaughterhouse fecal sewage belongs to high concentrated organic wastewater.These pollutants only have 20% to pass through innoxious place
Reason, treatment facility is not polluted in most slaughterhouses.There are many slaughterhouses that fecal sewage is directly discharged into water channel or pond, it is few
Part of contaminated water is used for agricultural irrigation, and a part permeates the ground, and most of sewage then pours river course in flood season with rainwater, serious dirty
Surface and ground water is contaminated, causes agriculture and animal husbandry community and Qinghai-Tibet water environment degradation.
N, P problem in slaughtering wastewater is more more prominent than organic matter, is difficult to eliminate using conventional treatment mode.From feed
The heavy metal of additive and a large amount of veterinary drug compositions needed to use by epidemic prevention.Although advocating the recycling of waste water, consider
To food security and Toxic with food chain amplification step by step, and long-term directly field irrigation medicine, additive, again
The enrichments such as metal are accumulated, and the slaughtering wastewater without ecology processing can not be cultivated directly in irrigated farmland or fishing class.
Low concentration wastewater (containing biogas slurry) refers to that slaughtering wastewater reaches country after conventional technical finesse《Integrated wastewater discharge mark
It is accurate》(GB8978-1996) the first pollutant highest allows concentration of emission primary standard in, but is handled without ecology, nitrogen,
The exceeded waste water such as phosphorus, heavy metal, feeding organic matter.This kind of low concentration wastewater directly discharge or Treated sewage reusing are always scale
Slaughterhouse wastewater treatment fails the problem solved very well.
Artificial Wetland Techniques originating from Europe, the artificial swamp of early stage by sand filter bed and plant with reference to and it is caused.Due to
The combination of plant root and sand filter bed is fine to wastewater treatment efficiency, therefore also referred to as root area method, and it is existing to be developing progressively later
In the artificial swamp of maturation, including surface flow artificial marshland, horizontal drowned flow artificial wet land and vertical subsurface flow wetland, artificial swamp
Not only early in American-European Large scale construction, also it is widely used in China in recent years.Artificial swamp is a kind of similar with marshland
By the synthesis ecosystem manually building and control, when sewage flows through artificial swamp, by the place of plant, soil and microorganism
Reason is purified.Its principle is the ecosystem formed using the Institute of Micro-biology adhered on soil, the water plant of cultivation and filler
System absorbs and decomposed the organic carbon pollutant in sewage and the auxotype pollutant containing nitrogen, phosphorus.It has high treating effect, fortune
Turn the features such as maintenance management is convenient, engineering capital construction and running expense is low, be widely used in agriculture point source and pollution of area source and
Body eutrophication issue handling, preserves the ecological environment.
Artificial wet land system is applied to butcher the processing of low concentration wastewater, can to the nitrogen in waste water, phosphorus, heavy metal,
The certain treatment effect of the realizations such as feeding organic matter；But it is effective removal effect to be also present, the problem of removing overall efficiency difference.
The content of the invention
It is an object of the invention to solve at least the above and/or defect, and provide at least will be described later it is excellent
Point.
In order to realize according to object of the present invention and further advantage, there is provided low concentration wastewater is butchered in a kind of processing
Artificial wet land system, the bottom of the wet land system is impervious barrier, is gravel collection water layer successively thereon, nitrogen phosphorus adsorption layer, organic
Thing purifying layer, plantation layer；Plantation wetland plant in the plantation layer；The top of the wet land system sets the cloth towards plantation layer
Water pipe, apopore is evenly distributed with the water distributor；The water distributor will butcher low concentration wastewater and be delivered to plantation layer；It is described
Lay perforated drain pipe in the inside of gravel collection water layer；Osculum is evenly arranged with the perforated drain pipe；The perforation draining
Gravel collection water layer is stretched out in one end of pipe to butcher low concentration wastewater discharge after wet land system is handled；
Wherein, the nitrogen phosphorus adsorption layer includes the raw material mixing composition of following parts by weight：30~50 parts of furfural dregs, 20~30
The extra large oyster shell of part, 10~20 parts of zeolites, 10~15 parts of kaolin；
The organic matter purifying layer is modified montmorillonoid.
Preferably, the ratio of the thickness of the thickness of the plantation layer and organic matter purifying layer is 1:1.5~3；It is described to have
The ratio of the thickness of machine thing purifying layer and the thickness of nitrogen phosphorus adsorption layer is 1:1~2；The thickness of the gravel collection water layer and plantation layer
Thickness ratio be 1.5~2.5:1, gravel collection water layer cobble-stone particle diameter is 5~10mm.
Preferably, the particle diameter of furfural dregs is 3~5mm in the nitrogen phosphorus adsorption layer, the particle diameter of extra large oyster shell is 3~5mm, boiling
The particle diameter of stone is 4~6mm, kaolinic particle diameter is 3~5mm.
Preferably, the particle diameter of montmorillonite is 5~8mm.
Preferably, the furfural dregs replace with modified furfural residue, and its preparation method is：By weight, by 20~50 parts
Furfural dregs are added in the alkaline solution that 100~150 parts of mass fractions are 30~50%, stir 30~90min, filtering, washing is extremely
Neutrality, obtain pre-processing furfural dregs；By weight, 10~25 parts of furfural dregs of pretreatment, third are added in supercritical reaction apparatus
20~25 parts of e pioic acid methyl ester, 5~10 parts of diallyldimethylammonium chloride, 0.02~0.1 part of persalt ammonium, water 150~200
Part, stir, then seal system, be passed through under conditions of carbon dioxide to 30~40MPa, 60~75 DEG C of temperature and react 2
~5 hours, release, then with ethanol precipitation, dry, remove homopolymer caused by dereaction with acetone elution, obtain modified furfural
Slag.
Preferably, it is characterised in that the modified furfural residue also includes following processing procedure：By weight, 30 are taken~
50 parts of modified furfural residues are added in the sodium hydroxide solution that 80~100 parts of concentration are 15%, stirring, while stirring by 20~
The epoxychloropropane solution that 30 parts of concentration are 50~60wt% is added dropwise to, and after being added dropwise to complete, continues 60~90min of stirring, is filtered,
Washing obtains modified furfural residue to neutrality.
Preferably, the montmorillonite replaces with modified montmorillonoid, and its preparation method is：By montmorillonite and concentration be 10~
25% mixed in hydrochloric acid, the acid activation 3-7 hours at 60-100 DEG C, it is washed with water and washs to pH value to 4-5, it is modified to obtain the acid
The liquid-solid ratio of montmorillonite, hydrochloric acid and montmorillonite is 2-5：1, sour modified montmorillonoid is configured to the acid that concentration is 15~20wt% and changed
Property montmorillonite suspension；The sour modified montmorillonoid suspension is added in supercritical reaction apparatus, while it is molten to add quaternary ammonium salt
Liquid, stirring, then system is sealed, under conditions of being passed through at carbon dioxide to 45~60MPa, 40~60 DEG C of temperature react 60~
120min, release, dry, obtain modified montmorillonoid.
Preferably, the mass percent concentration of the quaternary ammonium salt solution is 15~20wt%, sour modified montmorillonoid and season
In the reaction system that ammonium salt solution is formed, solid-to-liquid ratio 1:20~25.
Preferably, the quaternary ammonium salt solution is diallyldimethylammonium chloride, double octyl alkyl dimethyl ammonium chlorides, ten
Any one in dialkyl dimethyl benzyl ammonium chloride, cetyl trimethylammonium bromide solution.
The present invention also provides a kind of method for handling and butchering low concentration wastewater, will butcher low concentration wastewater and flows through above-mentioned people
Work wet land system；It is described that to butcher residence time of the low concentration wastewater in artificial wet land system be 2~5h.
The present invention comprises at least following beneficial effect：Low concentration slaughtering wastewater is entered by the artificial wet land system of the present invention
Row processing, can comprehensively be handled butchering low concentration wastewater, and pass through the nitrogen phosphorus adsorption layer and organic matter of the present invention
Purifying layer, makes after wastewater treatment that nitrogen, phosphorus, heavy metal, organic matter equal size significantly lower in water outlet, solves low concentration well
The problem of nitrogen, phosphorus, heavy metal, feeding organic matter etc. are exceeded in waste water.
Further advantage, target and the feature of the present invention embodies part by following explanation, and part will also be by this
The research and practice of invention and be understood by the person skilled in the art.
Embodiment：
With reference to embodiment, the present invention is described in further detail, to make those skilled in the art with reference to specification
Word can be implemented according to this.
It should be appreciated that such as " having ", "comprising" and " comprising " term used herein do not allot one or more
The presence or addition of individual other elements or its combination.
Fig. 1 shows that the artificial wet land system of low concentration wastewater is butchered in a kind of processing of the present invention, the wet land system 1
Bottom is impervious barrier 2, is gravel collection water layer 3, nitrogen phosphorus adsorption layer 4, organic matter purifying layer 5, plantation layer 6 successively thereon；The kind
Plant plantation wetland plant 7 in layer 6；The top of the wet land system 1 sets the water distributor 8 towards plantation layer, on the water distributor 8
It is evenly distributed with apopore 9；The water distributor 8 will butcher low concentration wastewater and be delivered to plantation layer 6；The gravel collection water layer 3
Lay perforated drain pipe 10 in inside；Osculum 11 is evenly arranged with the perforated drain pipe 10；The perforated drain pipe 10
Gravel collection water layer is stretched out in one end to butcher low concentration wastewater discharge after wet land system 1 is handled；
Wherein, the nitrogen phosphorus adsorption layer includes the raw material mixing composition of following parts by weight：30~50 parts of furfural dregs, 20~30
The extra large oyster shell of part, 10~20 parts of zeolites, 10~15 parts of kaolin；Can efficiently it be removed using the nitrogen phosphorus adsorption layer
The organic matter purifying layer is montmorillonite.
In this technical scheme, butcher low concentration wastewater and artificial wet land system is flowed into by water distributor, set on water distributor
Apopore, water distribution uniformity enable to butcher low concentration wastewater and uniformly flow into artificial wet land system, butcher low concentration wastewater and arrived from above
It is lower to pass through plantation layer, organic matter purifying layer, nitrogen phosphorus adsorption layer, gravel collection water layer respectively, efficiently remove organic in slaughtering wastewater
The pollutant such as thing, N, P, the gravel collection water layer carry out filtering to sewage and catchmented, and the water outlet after purification is discharged by perforated drain pipe.
The present invention is purified by being layered, and is progressively removed pollutant, is reached the purpose of efficient process.
In another technical solution, the ratio of the thickness of the plantation layer and the thickness of organic matter purifying layer is 1:1.5
~3；The ratio of the thickness of the organic matter purifying layer and the thickness of nitrogen phosphorus adsorption layer is 1:1~2；The thickness of the gravel collection water layer
The ratio of degree and the thickness of plantation layer is 1.5~2.5:1, gravel collection water layer cobble-stone particle diameter is 5~10mm, using this side
Formula, purified by being layered, each layer thickness proportion is rationally set, progressively removes pollutant, reaches the purpose of efficient process.
In another technical solution, the particle diameter of furfural dregs is 3~5mm, the particle diameter of extra large oyster shell in the nitrogen phosphorus adsorption layer
Particle diameter for 3~5mm, zeolite is 4~6mm, kaolinic particle diameter is 3~5mm, in this way, can efficiently be removed
Nitrogen phosphorus in slaughtering wastewater.
In another technical solution, the particle diameter of the montmorillonite is 5~8mm.
In another technical solution, the furfural dregs replace with modified furfural residue, and its preparation method is：By weight,
20~50 parts of furfural dregs are added in the alkaline solution that 100~150 parts of mass fractions are 30~50%, stir 30~90min, mistake
Filter, is washed to neutrality, obtains pre-processing furfural dregs；By weight, pretreatment furfural dregs 10 are added in supercritical reaction apparatus
~25 parts, 20~25 parts of methyl acrylate, 5~10 parts of diallyldimethylammonium chloride, 0.02~0.1 part of persalt ammonium, water
150~200 parts, stir, then seal system, be passed through carbon dioxide to 30~40MPa, the condition of 60~75 DEG C of temperature
Lower reaction 2~5 hours, release, then with ethanol precipitation, dry, remove homopolymer caused by dereaction with acetone elution, changed
Property furfural dregs.
In another technical solution, the modified furfural residue also includes following processing procedure：By weight, 30~50 are taken
Part modified furfural residue is added in the sodium hydroxide solution that 80~100 parts of concentration are 15%, stirring, by 20~30 while stirring
The epoxychloropropane solution that part concentration is 50~60wt% is added dropwise to, and after being added dropwise to complete, continues 60~90min of stirring, is filtered, is washed
Wash to neutrality, obtain modified furfural residue.
In another technical solution, the montmorillonite replaces with modified montmorillonoid, and its preparation method is：By montmorillonite with
Concentration is 10~25% mixed in hydrochloric acid, the acid activation 3-7 hours at 60-100 DEG C, is washed with water and washs to pH value to 4-5, obtain
The liquid-solid ratio of the sour modified montmorillonoid, hydrochloric acid and montmorillonite is 2-5：1, by sour modified montmorillonoid be configured to concentration for 15~
20wt% sour modified montmorillonoid suspension；The sour modified montmorillonoid suspension is added in supercritical reaction apparatus, simultaneously
Quaternary ammonium salt solution is added, stirring, is then sealed system, the bar being passed through at carbon dioxide to 45~60MPa, 40~60 DEG C of temperature
60~120min is reacted under part, release, dries, obtains modified montmorillonoid.
In another technical solution, the mass percent concentration of the quaternary ammonium salt solution is 15~20wt%, and acid is modified
In the reaction system that montmorillonite is formed with quaternary ammonium salt solution, solid-to-liquid ratio 1:20~25.
In another technical solution, the quaternary ammonium salt solution is diallyldimethylammonium chloride, double octyl diformazans
Any one in ammonium chloride, dodecyl benzyl dimethyl ammonium chloride, cetyl trimethylammonium bromide solution.
Embodiment 1：
It is a kind of to handle the method for butchering low concentration wastewater, low concentration wastewater will be butchered artificial swamp system is flowed into by water distributor
System, sets apopore on water distributor, water distribution uniformity, enables to butcher low concentration wastewater and uniformly flows into artificial wet land system, butchers
Low concentration wastewater is from top to bottom respectively by plantation layer, organic matter purifying layer, nitrogen phosphorus adsorption layer, gravel collection water layer, the gravel
Collection water layer carries out filtering to sewage and catchmented, and the water outlet after purification is discharged by perforated drain pipe；The low concentration wastewater of butchering is in people
Residence time in work wet land system is 3h；The ratio of the thickness of the plantation layer and the thickness of organic matter purifying layer is 1:2；Institute
The ratio for stating the thickness of organic matter purifying layer and the thickness of nitrogen phosphorus adsorption layer is 1:1.5；The thickness and kind of the gravel collection water layer
The ratio for planting the thickness of layer is 2:1, gravel integrates water layer cobble-stone particle diameter as 8mm；
Wherein, the nitrogen phosphorus adsorption layer includes the raw material mixing composition of following parts by weight：25 parts of furfural dregs, 25 parts of extra large oysters
Shell, 15 parts of zeolites, 12 parts of kaolin；The particle diameter of furfural dregs is 5mm in the nitrogen phosphorus adsorption layer, the particle diameter of extra large oyster shell is 5mm, boiling
The particle diameter of stone is 4mm, kaolinic particle diameter is 3mm；
The organic matter purifying layer is montmorillonite；The particle diameter of the montmorillonite is 5~8mm；Using the method for the present embodiment
Handle butchering low concentration wastewater, organic removal rate is obtained as 92.2%, nitrogen removal rate 91.5%, total phosphorus through experiment
Clearance 90.6%.
Embodiment 2：
The furfural dregs replace with modified furfural residue, and its preparation method is：By weight, 20 parts of furfural dregs are added 100
Part mass fraction is in 30% alkaline solution, stirs 30min, filtering, washs to neutrality, obtains pre-processing furfural dregs；By weight
Part is measured, 10 parts of furfural dregs of pretreatment, 20 parts of methyl acrylate, diallyidimethylammonium chloride are added in supercritical reaction apparatus
5 parts of ammonium, 0.02 part of persalt ammonium, 150 parts of water, stir, then seal system, are passed through carbon dioxide to 30MPa, temperature
React 2 hours under conditions of 60 DEG C, release, then with ethanol precipitation, dry, homopolymerization caused by dereaction is removed with acetone elution
Thing, obtain modified furfural residue；The alkaline solution is that weight ratio is 2:1 urea and the mixed solution of sodium hydroxide；
Its with technological parameter and process with it is identical in embodiment 1.It is low dense to butchering using the method for the present embodiment
Degree waste water is handled, and organic removal rate is obtained as 93.5%, nitrogen removal rate 94.2%, total tp removal rate through experiment
93.5%.
Embodiment 3：
The furfural dregs replace with modified furfural residue, and its preparation method is：By weight, 30 parts of furfural dregs are added 120
Part mass fraction is in 40% alkaline solution, stirs 60min, filtering, washs to neutrality, obtains pre-processing furfural dregs；By weight
Part is measured, 20 parts of furfural dregs of pretreatment, 25 parts of methyl acrylate, diallyidimethylammonium chloride are added in supercritical reaction apparatus
10 parts of ammonium, 0.05 part of persalt ammonium, 180 parts of water, stir, then seal system, are passed through carbon dioxide to 40MPa, temperature
React 5 hours under conditions of 70 DEG C of degree, release, then with ethanol precipitation, dry, homopolymerization caused by dereaction is removed with acetone elution
Thing, obtain modified furfural residue；The alkaline solution is that weight ratio is 2:1 urea and the mixed solution of sodium hydroxide.
Its with technological parameter and process with it is identical in embodiment 1.It is low dense to butchering using the method for the present embodiment
Degree waste water is handled, and organic removal rate is obtained as 93.3%, nitrogen removal rate 94.8%, total tp removal rate through experiment
93.7%.
Embodiment 4：
The modified furfural residue also includes following processing procedure：By weight, take 30 parts of 80 parts of modified furfural residues additions dense
Spend in the sodium hydroxide solution for 15%, stir, epoxychloropropane solution while stirring by 20 parts of concentration for 50wt%
It is added dropwise to, after being added dropwise to complete, continues to stir 60min, filtering, wash to neutrality, obtain modified furfural residue；The speed of the dropwise addition
For 10mL/min；
Its with technological parameter and process with it is identical in embodiment 2.It is low dense to butchering using the method for the present embodiment
Degree waste water is handled, and organic removal rate is obtained as 93.6%, nitrogen removal rate 95.3%, total tp removal rate through experiment
94.6%.
Embodiment 5：
The modified furfural residue also includes following processing procedure：By weight, take 40 parts of 90 parts of modified furfural residues additions dense
Spend in the sodium hydroxide solution for 15%, stir, epoxychloropropane solution while stirring by 30 parts of concentration for 55wt%
It is added dropwise to, after being added dropwise to complete, continues to stir 60min, filtering, wash to neutrality, obtain modified furfural residue；The speed of the dropwise addition
For 10mL/min；
Its with technological parameter and process with it is identical in embodiment 3.It is low dense to butchering using the method for the present embodiment
Degree waste water is handled, and organic removal rate is obtained as 93.5%, nitrogen removal rate 95.4%, total tp removal rate through experiment
94.5%.
Embodiment 6：
The montmorillonite replaces with modified montmorillonoid, and its preparation method is：Montmorillonite is mixed with concentration for 10% hydrochloric acid
Close, acid activation 3 hours at 60 DEG C, be washed with water and wash to pH value to 4, obtain the sour modified montmorillonoid, hydrochloric acid and montmorillonite
Liquid-solid ratio be 2：1, sour modified montmorillonoid is configured to the sour modified montmorillonoid suspension that concentration is 15wt%；The acid is changed
Property montmorillonite suspension add in supercritical reaction apparatus, while add quaternary ammonium salt solution, stir, then seal system, lead to
60min is reacted under conditions of entering at carbon dioxide to 45MPa, 40 DEG C of temperature, release, dries, obtains modified montmorillonoid.The season
The mass percent concentration of ammonium salt solution is 15wt%, in the reaction system that sour modified montmorillonoid is formed with quaternary ammonium salt solution, Gu
Liquor ratio is 1:20；The quaternary ammonium salt solution is diallyldimethylammonium chloride solution；
Its with technological parameter and process with it is identical in embodiment 1.It is low dense to butchering using the method for the present embodiment
Degree waste water is handled, and organic removal rate is obtained as 95.8%, nitrogen removal rate 92.8%, total tp removal rate through experiment
91.7%.
Embodiment 7：
The montmorillonite replaces with modified montmorillonoid, and its preparation method is：Montmorillonite is mixed with concentration for 15% hydrochloric acid
Close, acid activation 5 hours at 80 DEG C, be washed with water and wash to pH value to 5, obtain the sour modified montmorillonoid, hydrochloric acid and montmorillonite
Liquid-solid ratio be 4：1, sour modified montmorillonoid is configured to the sour modified montmorillonoid suspension that concentration is 20wt%；The acid is changed
Property montmorillonite suspension add in supercritical reaction apparatus, while add quaternary ammonium salt solution, stir, then seal system, lead to
120min is reacted under conditions of entering under carbon dioxide to 60MPa, temperature 50 C, release, dries, obtains modified montmorillonoid.It is described
The mass percent concentration of quaternary ammonium salt solution is 20wt%, in the reaction system that sour modified montmorillonoid is formed with quaternary ammonium salt solution,
Solid-to-liquid ratio is 1:25；The quaternary ammonium salt solution is dodecyl benzyl dimethyl ammonium chloride solution；
Its with technological parameter and process with it is identical in embodiment 1.
Handled using the method for the present embodiment butchering low concentration wastewater, obtaining organic removal rate through experiment is
96.2%th, nitrogen removal rate 92.6%, total tp removal rate 91.8%.
Embodiment 8：
The montmorillonite replaces with modified montmorillonoid, and its preparation method is：Montmorillonite is mixed with concentration for 15% hydrochloric acid
Close, acid activation 5 hours at 80 DEG C, be washed with water and wash to pH value to 5, obtain the sour modified montmorillonoid, hydrochloric acid and montmorillonite
Liquid-solid ratio be 4：1, sour modified montmorillonoid is configured to the sour modified montmorillonoid suspension that concentration is 20wt%；The acid is changed
Property montmorillonite suspension add in supercritical reaction apparatus, while add quaternary ammonium salt solution, stir, then seal system, lead to
90min is reacted under conditions of entering under carbon dioxide to 50MPa, temperature 50 C, release, dries, obtains modified montmorillonoid.The season
The mass percent concentration of ammonium salt solution is 20wt%, in the reaction system that sour modified montmorillonoid is formed with quaternary ammonium salt solution, Gu
Liquor ratio is 1:25；The quaternary ammonium salt solution is dodecyl benzyl dimethyl ammonium chloride solution；
Its with technological parameter and process with it is identical in embodiment 2.It is low dense to butchering using the method for the present embodiment
Degree waste water is handled, and organic removal rate is obtained as 96.7%, nitrogen removal rate 95.9%, total tp removal rate through experiment
94.6%.
Embodiment 9：
The montmorillonite replaces with modified montmorillonoid, and its preparation method is：Montmorillonite is mixed with concentration for 15% hydrochloric acid
Close, acid activation 5 hours at 80 DEG C, be washed with water and wash to pH value to 5, obtain the sour modified montmorillonoid, hydrochloric acid and montmorillonite
Liquid-solid ratio be 4：1, sour modified montmorillonoid is configured to the sour modified montmorillonoid suspension that concentration is 20wt%；The acid is changed
Property montmorillonite suspension add in supercritical reaction apparatus, while add quaternary ammonium salt solution, stir, then seal system, lead to
90min is reacted under conditions of entering under carbon dioxide to 50MPa, temperature 50 C, release, dries, obtains modified montmorillonoid.The season
The mass percent concentration of ammonium salt solution is 20wt%, in the reaction system that sour modified montmorillonoid is formed with quaternary ammonium salt solution, Gu
Liquor ratio is 1:25；The quaternary ammonium salt solution is dodecyl benzyl dimethyl ammonium chloride solution；
Its with technological parameter and process with it is identical in embodiment 4.
Handled using the method for the present embodiment butchering low concentration wastewater, obtaining organic removal rate through experiment is
97.8%th, nitrogen removal rate 96.6%, total tp removal rate 95.3%.
Although embodiment of the present invention is disclosed as above, it is not restricted in specification and embodiment listed
With it can be applied to various suitable the field of the invention completely, can be easily for those skilled in the art
Other modification is realized, therefore under the universal limited without departing substantially from claim and equivalency range, it is of the invention and unlimited
In specific details and shown here as the example with description.
Claims (10)
1. a kind of handle the artificial wet land system for butchering low concentration wastewater, it is characterised in that the bottom of the wet land system is anti-
Infiltration layer, it is gravel collection water layer, nitrogen phosphorus adsorption layer, organic matter purifying layer, plantation layer successively thereon；Plantation wetland in the plantation layer
Plant；The top of the wet land system sets the water distributor towards plantation layer, and apopore is evenly distributed with the water distributor；Institute
State water distributor and will butcher low concentration wastewater and be delivered to plantation layer；Lay perforated drain pipe in the inside of the gravel collection water layer；It is described
Osculum is evenly arranged with perforated drain pipe；One end of the perforated drain pipe stretch out gravel collection water layer will be through wet land system at
Low concentration wastewater discharge is butchered after reason；
Wherein, the nitrogen phosphorus adsorption layer includes the raw material mixing composition of following parts by weight：30~50 parts of furfural dregs, 20~30 parts of seas
Oyster shell, 10~20 parts of zeolites, 10~15 parts of kaolin；
The organic matter purifying layer is montmorillonite.
2. the artificial wet land system of low concentration wastewater is butchered in processing as claimed in claim 1, it is characterised in that the plantation layer
Thickness and organic matter purifying layer thickness ratio be 1:1.5~3；The thickness of the organic matter purifying layer and nitrogen phosphorus adsorption layer
Thickness ratio be 1:1~2；The ratio of the thickness of the gravel collection water layer and the thickness of plantation layer is 1.5~2.5:1, gravel
Stone collection water layer cobble-stone particle diameter is 5~10mm.
3. the artificial wet land system of low concentration wastewater is butchered in processing as claimed in claim 1, it is characterised in that the nitrogen phosphorus is inhaled
The particle diameter of furfural dregs is 3~5mm in attached layer, the particle diameter of extra large oyster shell is 3~5mm, the particle diameter of zeolite is 4~6mm, kaolinic grain
Footpath is 3~5mm.
4. the artificial wet land system of low concentration wastewater is butchered in processing as claimed in claim 1, it is characterised in that the grain of montmorillonite
Footpath is 5~8mm.
5. the artificial wet land system of low concentration wastewater is butchered in processing as claimed in claim 1, it is characterised in that the furfural dregs
Modified furfural residue is replaced with, its preparation method is：By weight, 20~50 parts of furfural dregs are added into 100~150 parts of mass fractions
In 30~50% alkaline solution, to stir 30~90min, filtering, wash to neutrality, obtain pre-processing furfural dregs；By weight
Part, 10~25 parts of furfural dregs of pretreatment, 20~25 parts of methyl acrylate, diallyl dimethyl are added in supercritical reaction apparatus
5~10 parts of ammonium chloride, 0.02~0.1 part of persalt ammonium, 150~200 parts of water, stir, then seal system, be passed through
React 2~5 hours under conditions of carbon dioxide to 30~40MPa, 60~75 DEG C of temperature, release, then with ethanol precipitation, do
It is dry, homopolymer caused by dereaction is removed with acetone elution, obtains modified furfural residue.
6. the artificial wet land system of low concentration wastewater is butchered in processing as claimed in claim 5, it is characterised in that its feature exists
In the modified furfural residue also includes following processing procedure：By weight, 30~50 parts of modified furfural residues are taken to add 80~100
Part concentration is in 15% sodium hydroxide solution, is stirred, ring while stirring by 20~30 parts of concentration for 50~60wt%
Oxygen chloropropane solution is added dropwise to, and after being added dropwise to complete, continues 60~90min of stirring, filtering, is washed to neutrality, is obtained modified furfural
Slag.
7. the artificial wet land system of low concentration wastewater is butchered in processing as claimed in claim 1, it is characterised in that the montmorillonite
Modified montmorillonoid is replaced with, its preparation method is：By the mixed in hydrochloric acid that montmorillonite and concentration are 10~25%, at 60-100 DEG C
Acid activation 3-7 hours, it is washed with water and washs to pH value to 4-5, obtain the liquid-solid ratio of the sour modified montmorillonoid, hydrochloric acid and montmorillonite
For 2-5：1, sour modified montmorillonoid is configured to the sour modified montmorillonoid suspension that concentration is 15~20wt%；The acid is modified
Montmorillonite suspension is added in supercritical reaction apparatus, while adds quaternary ammonium salt solution, is stirred, is then sealed system, be passed through
60~120min is reacted under conditions of at carbon dioxide to 45~60MPa, 40~60 DEG C of temperature, release, dries, obtains being modified illiteracy
De- soil.
8. the artificial wet land system of low concentration wastewater is butchered in processing as claimed in claim 7, it is characterised in that the quaternary ammonium salt
The mass percent concentration of solution is 15~20wt%, in the reaction system that sour modified montmorillonoid is formed with quaternary ammonium salt solution, Gu
Liquor ratio is 1:20~25.
9. the artificial wet land system of low concentration wastewater is butchered in processing as claimed in claim 8, it is characterised in that the quaternary ammonium salt
Solution is diallyldimethylammonium chloride, double octyl alkyl dimethyl ammonium chlorides, dodecyl benzyl dimethyl ammonium chloride, 16
Any one in alkyl trimethyl ammonium bromide solution.
10. a kind of handle the method for butchering low concentration wastewater, it is characterised in that will butcher low concentration wastewater and flows through such as claim
Artificial wet land system described in 1~9 any one；It is described to butcher residence time of the low concentration wastewater in artificial wet land system as 2
~5h.
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Application publication date: 20171110 |