CN109734228A - A kind of compound sewage processing method - Google Patents
A kind of compound sewage processing method Download PDFInfo
- Publication number
- CN109734228A CN109734228A CN201910228587.4A CN201910228587A CN109734228A CN 109734228 A CN109734228 A CN 109734228A CN 201910228587 A CN201910228587 A CN 201910228587A CN 109734228 A CN109734228 A CN 109734228A
- Authority
- CN
- China
- Prior art keywords
- water
- parts
- coagulation
- processing method
- solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a kind of compound sewage processing methods, method includes the following steps: Step 1: cylinder machine filters；Step 2: coagulating sedimentation；Step 3: photocatalytic degradation；Step 4: second coagulation；Step 5: modified polyvinilidene fluoride nano fibrous membrane filters.Compound sewage processing method provided by the invention, removal impurity and suspended particulate are filtered by cylinder machine first, then oil removal is gone by first time coagulation, dye molecule, organic matter and part heavy metal, it is reacted again by photocatalytic degradation by dye molecule, the thorough mineralising such as organic molecule, then second coagulation removes the complexing heavy metal released, finally by the desalination of modified polyvinilidene fluoride nano fibrous membrane and sterilization, each step collaboration, guarantee contained suspended matter in compound sewage, organic matter, heavy metal, salt removal is thorough, it is easy to operate, it is high-efficient, it is without secondary pollution, it is low in cost, effluent quality meets industrial reuse water quality standard, water utilization rate is high, it is good in economic efficiency.
Description
Technical field
The present invention relates to technical field of sewage, and in particular to a kind of compound sewage processing method.
Background technique
With the rapid development of the national economy, the discharge amount of sewage also increasingly increases, many industrial wastewaters, such as papermaking,
Sugaring, alcohol, starch, monosodium glutamate, process hides, food industry high concentration organic sewage and other industrial wastewaters such as dyeing waste water, plating
Waste water, petroleum wastewater, wastewater from chemical industry, smelting wastewater etc. and medical institutions' sewage, city domestic sewage discharge amount every year all
Increasing.If these sewage are not subject to any processing and arbitrarily discharge, it will cause serious pollution to environment, while endangering yet
Evil ecology and human health, so very crucial to the reasonable processing of the sewage of discharge.
In recent years, as the increasingly raising of environmental quality standards, wastewater treatment rate and sewage treatment degree also increasingly obtain
Improve and in-depth, there are many kinds of the methods for handling sewage at present, can be divided into physical method, chemical method, Photosynthetic Bacteria, bioanalysis and
Electrochemical process.Physical method is usually with modes such as filtering, precipitating, air bearings to handle sewage, with disengaging time short, device simply,
The advantages that treating capacity is big, but it is higher to processing equipment performance requirement, and investment cost and operating cost are all higher；Chemical method is usually
By the way that specific chemical reagent, such as flocculant, complexing agent or soda acid inorganic agent is added, element toxic in water is handled, tool
Have that few capital expenditure, simple process, operation is easy, low energy consumption, adaptable to the variation of temperature, but disadvantage is also comparison list
One, the organic wastewater of the high concentration of content complexity cannot be handled, it is especially lower to the removal rate of waste water small molecular organic matter；
Photosynthetic Bacteria handles waste water, has machine pollutants removal rate high, with low investment, and land occupation is few, and thallus sludge be to person poultry harmless,
Protein feed rich in nutrition, but Photosynthetic Bacteria is sensitive to temperature change, needs heating and attemperator accordingly, running cost
With higher, management inconvenience etc..Bioanalysis has the advantages that technology maturation is reliable, impact resistance ability is strong, high treating effect, but takes up an area
Area is big, and energy consumption is high, and investment cost and operating cost are high, by the environmental influences such as the water temperature of waste water, pH, noxious material compared with
Greatly, and processing is not thorough, it is difficult to reach discharge standard.Electrochemical process is with equipment volume is small, occupied area is few, controllability is good
The advantages of, but there are pollutant resistance to mass tranfer greatly caused by current density is low, operating cost is high or generates side reaction the disadvantages of.
The processes such as neutralization, precipitating, anaerobism, aeration, air bearing are generally included in existing sewage disposal technology, and it is multiple to there is operation
It is miscellaneous, the problems such as treatment effeciency is low, operating cost is high and effluent quality is unstable, therefore research and develop one kind and can completely remove sewage
In various pollutants, simple process, treatment effeciency are high, effluent quality is good, low-cost compound sewage processing method has
Significance.
Summary of the invention
In view of the deficiency of existing sewage water treatment method, the present invention provide a kind of simple process is flexible, controllability is good, processing effect
The compound sewage processing method that rate is high, low energy consumption, without secondary pollution, effluent quality is good.Specific technical solution is as follows:
A kind of compound sewage processing method, method includes the following steps:
Step 1: cylinder machine filters: the compound sewage of plant emissions passes through cylinder machine, removes the floating material in water, suspends
The impurity such as object；
Step 2: coagulating sedimentation: the filtered water outlet of cylinder machine is passed through in coagulation reaction tank, is added by the dosage of 200g/t
Enter composite flocculation agent, after quickly stirring 20s, then 1~2h of standing sedimentation completes muddy water point in siphon mud discharge type horizontal flow basin
From particulate matter, dye molecule, most heavy metals and larger molecular organics in removing water；
Step 3: photocatalytic degradation: horizontal flow basin water outlet is passed through photocatalytic degradation reactor, and reactor is horizontal cylindrical,
Wall is opaque, and internal longitudinal uniformly arrangement multilayer load has TiO2-WO3Carbon fibre web, machine is equipped between carbon fibre web interval
Tool stirring rod, reactor axis connect exhaust gas processing device, reaction time 15 to column light source, reactor upper right side is provided centrally with
~30min, by dye molecule, the direct mineralising of small organic molecule, the heavy metal of complexing is released in water body；
Step 4: second coagulation: the water outlet of photocatalytic degradation reactor being passed through in second coagulation pond, by the throwing of 50g/t
Composite flocculation agent is added in dosage, carries out second coagulation, removes in water after remaining micro particulate matter, organic matter and photocatalytic degradation
The complexing heavy metal of release；
Step 5: modified polyvinilidene fluoride nano fibrous membrane filters: the water outlet of second coagulation is passed through modified polyvinilidene fluorine second
Alkene nanofiber membrane filter, removes 95% or more inorganic salts, and effluent quality reaches industrial reuse water quality standard.
Preferably, composite flocculation agent used in step 2 and step 4, is prepared by following raw material in parts by weight: living
Property 15~25 parts of carbon fiber, 4~11 parts of acrylamide, 0.003~0.006 part of initiator, 2~9 parts of sodium carboxymethylcellulose, poly-
5~17 parts of vinyl alcohol, 3~6 parts of crosslinking agent, 4~8 parts of cysteine-modifying three-dimensional grapheme, 10~15 parts of starch xanthate,
15~26 parts of modified alta-mud, 5~15 parts of activating fly ash.
Preferably, the initiator is ammonium ceric nitrate；The crosslinking agent is N, N '-methylene-bisacrylamide, N, N'- bis-
One or more of allyl tartaric acid diamides, divinylbenzene.
Preferably, the method for preparing modified bentonite is first to be uniformly mixed bentonite solution with hydrotalcite solution,
It adds urea to stir evenly, is transferred to autoclave, reacts 5h at 120 DEG C, the solid reacted is washed, dried i.e.
?.
Preferably, the activation temperature of the activating fly ash is 350 DEG C.
Preferably, the preparation method of the composite flocculation agent, comprising the following steps:
I, copolyreaction: being added starch xanthate, cysteine-modifying three-dimensional grapheme in distilled water, and stirring is equal
It is even, acrylamide monomer solution is injected, 45 ± 5 DEG C of stirring in water bath reactions are added dropwise initiator after leading to 10~20min of nitrogen, continue
Sticky fluffy wadding body to appear is stirred, dries, pulverize；
II, prepared by mixed material: in deionized water by step 1 copolyreaction product ultrasonic disperse, bentone is added
Soil, activated carbon fibre, activating fly ash, ultrasonic disperse is uniform, obtains mixed material；
III, solution is prepared: in deionized water by sodium carboxymethylcellulose, polyvinyl alcohol dissolution, keeping temperature is 80 ± 5
DEG C, 6~8h is persistently stirred, solution is configured to；
IV, prepared by flocculant: mixed material obtained by step 2 is added in poly-vinyl alcohol solution, adds crosslinking agent, 55
~75 DEG C of 2~4h of insulation reaction are to get composite flocculation agent.
Preferably, load has TiO in step 32-WO3Carbon fibre web be to pass through Best-Effort request using carbon fibre web as carrier
Method is by TiO2-WO3Colloidal sol is carried on carbon fiber surface, carries out annealing to it using superheated steam and is made.
Preferably, modified polyvinilidene fluoride nano fibrous membrane is Ag-SiO in step 52- PVDF blending and modifying composite membrane,
Preparation method are as follows: PVDF original film is first subjected to surface hydroxylation, be then soaked into the n-hexane oil solution of TMC 30min into
Row TMC is modified, is finally immersed in Ag-SiO260~90min in dispersion liquid adjusts pH to 9, and pure water is cleaned, obtained by drying.
Compound sewage processing method provided by the invention, using mechanical filter method removal compound sewage in impurity and
Suspended matter adsorbs the particulate matter not filtered off using composite flocculation agent later by coagulating sedimentation, and passes through active carbon in flocculant
Fiber, cysteine-modifying three-dimensional grapheme active site in conjunction with dye molecule, macromolecular organic pollutant, starch xanthan
Acid esters separates in conjunction with heavy metal, and through standing sedimentation with water body, evenly dispersed modification in the hydrogel that flocculant is formed
Bentonite and active fly ash substantially increase the rate of adsorption and adsorption capacity of flocculant；Then load has TiO2-WO3Carbon
Web can make dye molecule and the thorough mineralising of organic pollutant under action of ultraviolet light, without secondary pollution；By secondary mixed
Remaining micro particulate matter, organic matter are adsorbed and removed by solidifying used flocculant, the heavy metal that photocatalytic degradation further discharges from
Son is by the way that in conjunction with flocculant, and standing sedimentation is separated with water body, guarantees that pollutant is gone with the complexing of starch xanthate
Except thorough；Last modified polyvinilidene fluoride nano fibrous membrane filtering, can remove solvable inorganic salts and play biocidal efficacies, obtain
It is colourless, clarification, tasteless, COD value in 50mg/L hereinafter, the recycle-water of 90% or more removal of heavy metal ions rate, can direct reuse
In textile printing and dyeing process.
The raw materials used natural environmental-protective of composite flocculation agent used in the present invention, cheap and easy to get, preparation method is simple, flocculation excitation effect
Fruit and gel are good at nuclearity, have high specific surface area and crosslink density, are not influenced by water body hardness, Applicable temperature and pH range
Extensively, by a variety of effect adsorpting dye molecules, larger molecular organics and fixed heavy metal can be complexed, and to dye molecule, have
The removal non-selectivity of machine object and heavy metal, adding less, sludge yield is few, can be effectively reduced equipment operation and post-process at
This.Activated carbon fibre used using biological material as raw material, through hydrothermal carbonization and it is sulfuric acid activated obtain, turn waste into wealth, hydro-thermal
The fiber morphology of biological material can be maintained in method treatment process, and the glucose spheres that cellulose hydrolysis generates are attached to carbon
Fiber surface, then by the concentrated sulfuric acid activate, introduce sulfonic acid group, so that carbon fiber surface is become coarse, at the same hydrophily also have compared with
It is big to improve.Activated carbon fibre obtained reaches as high as 597.8mgg to the adsorbance of dye molecule-1.Starch xanthate used
It can make organic or inorganic particle loss of stability by bridge formation flocculoreaction, have to the particulate matter in suspension system in waste water
Powerful capture and settlement action, substantially increases the rate of settling of flocculant；In addition, preparing copolyreaction process in flocculant
In, the same amide group with chelating effect can be accessed, on starch xanthate so as to as heavy metal chelating
Heavy metal ion in agent and compound sewage acts on, and effectively removes the heavy metal in waste water.Cysteine-modifying three-dimensional used
Graphene, good mechanical property and have good thermal stability, have porous network structure, L-Cys functionalization GOs process
In, redox reaction occurs for sulfydryl and hydroxyl, epoxy group, dehydration occurs with-COOH, with the side of-C (O)-S-C- key sum
Formula carries out graft modification to GOs；And amidation process occurs for-NH2 and-COOH, forms peptide bond (- C (O)-N (H) -) for L-Cys
It is connect with GOs.By reacting above, L-Cys promotes graphene sheet layer connection to gradually form tridimensional network.With active carbon fibre
Synergistic sorption dye molecule is tieed up, thus composite flocculation agent rate of adsorption in compound sewage coagulation process is fast, adsorption capacity is big, takes off
Color effect is good.
Used load has TiO in photocatalytic degradation reactor of the present invention2-WO3Carbon fibre web be with carbon fibre web for carry
Body, carbon fibre web have the characteristics that high mechanical strength, oxidation resistance be strong, corrosion resistance and good, pass through setting multilayer carbon fiber
Net and setting mechanical stirring stick, can guarantee TiO2-WO3Nanoparticle comes into full contact with compound sewage, improves light-catalyzed reaction speed
Rate, TiO2-WO3It is supported on carbon fibre web by colloidal sol form, it is not easily to fall off, catalytic efficiency is used for a long time without reduction.
Modified polyvinilidene fluoride nano fibrous membrane used in the present invention is Ag-SiO2- PVDF blending and modifying composite membrane, due to
SiO2Material surface contains a large amount of hydrophilic hydroxyls, increases the affinity between composite membrane and water, significantly improves film
Hydrophily so that the antifouling property of composite membrane greatly enhances, pollutant is clear more easily by physics after film pollutes
Washout is gone；In use process, Ag+Gradually from Ag-SiO2It is dissolved out in material, in conjunction with bacterial cell wall proteins, makes bacterial cell
Loss of biological activity reaches sterilization and fungistatic effect to achieve the purpose that antibacterial.
Compound sewage processing method provided by the invention, has the advantages that compared with prior art
1. the present invention uses two step coagulations, pollutants removal rate can be improved and mitigate subsequent technique load significantly, institute
There is great specific surface area with composite flocculation agent, the adsorption site of substantial amounts, flocculation rate is fast, being capable of quick adsorption particle
Object, organic matter, dye molecule and heavy metal, and by corresponding active site fixed dye molecule and heavy metal, make it with wadding
Solidifying agent settles together, is kept completely separate with water body, and treatment effeciency is high, and removal effect is good；Polyacrylamide amine content in composite flocculation agent
It is less, and existed in the form with starch xanthate, the copolymerization of cysteine-modifying three-dimensional grapheme, in water treatment procedure
It can all be settled with flocculant, be not easy to remain in water body, avoid causing secondary pollution to water body；
2. photocatalytic degradation reactor used in the present invention, by TiO2-WO3Nanoparticle is securely supported on carbon fibre web,
Overcome TiO2The shortcomings that partial size is small, and use process is easy to run off, mechanical stirring not will cause the loss of photochemical catalyst, WO3Addition
TiO can be overcome2Itself have the defects that photo-generated carrier low separation efficiency, improve the catalytic activity of photochemical catalyst, directly will
Remaining dye molecule and small molecule organic pollutant mineralising thoroughly remove the organic matter for not being flocculated agent absorption, after being not necessarily to
Reason；
3. the present invention by being modified to polyvinylidene fluoride nanometer tunica fibrosa, by adding Ag nanoparticle, makes its tool
Two processing steps of the desalination of traditional wastewater processing and sterilization are reduced to a step and completed by standby bactericidal property, while modified
The enhancing of composite membrane hydrophily, antifouling property greatly promote, and the backwash cycle of film extends, and cleaning difficulty reduces, and significantly reduce
Process costs；
4. compound sewage processing method provided by the invention, simple process is flexible, and the complexity that can adapt to sewage composition is more
Become, cooperateed with by each step, guarantees contained suspended matter in compound sewage, organic matter, heavy metal, salt removal thoroughly, operation letter
Single, high-efficient, without secondary pollution, low in cost, return water rate is greater than 85%, and water utilization rate is high, good in economic efficiency.
Detailed description of the invention
Fig. 1 is photocatalytic degradation structure of reactor schematic diagram, wherein 1- reflux pump, 2- reactor wall, 3- ultraviolet source, 4-
Exhaust gas processing device, 5- mechanical stirring stick, 6- load have TiO2-WO3Carbon fibre web.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with attached drawing and of the invention excellent
Embodiment is selected to be described in detail.
Embodiment 1
A kind of compound sewage processing method, method includes the following steps:
Step 1: cylinder machine filters: the compound sewage of plant emissions passes through cylinder machine, removes the floating material in water, suspends
The impurity such as object；
Step 2: coagulating sedimentation: the filtered water outlet of cylinder machine is passed through in coagulation reaction tank, is added by the dosage of 200g/t
Enter composite flocculation agent, after quickly stirring 20s, then standing sedimentation 1h completes mud-water separation in siphon mud discharge type horizontal flow basin, removes
Remove particulate matter, dye molecule, most heavy metals and the larger molecular organics in water；
Step 3: photocatalytic degradation: horizontal flow basin water outlet is passed through photocatalytic degradation reactor (Fig. 1 through reflux pump (1 in Fig. 1)
It is shown), reactor is horizontal cylindrical, and wall (2 in Fig. 1) is opaque, and internal longitudinal uniformly arrangement multilayer load has TiO2-WO3
Carbon fibre web (6 in Fig. 1), be equipped with mechanical stirring stick (5 in Fig. 1) between carbon fibre web interval, the setting of reactor axial centre
Having column light source (3 in Fig. 1), reactor upper right side connects exhaust gas processing device (4 in Fig. 1) and connects, the reaction time 15~
30min, by dye molecule, the direct mineralising of small organic molecule, the heavy metal of complexing is released in water body；
Step 4: second coagulation: the water outlet of photocatalytic degradation reactor being passed through in second coagulation pond, by the throwing of 50g/t
Composite flocculation agent is added in dosage, carries out second coagulation, removes in water after remaining micro particulate matter, organic matter and photocatalytic degradation
The complexation heavy metal ion of release；
Step 5: modified polyvinilidene fluoride nano fibrous membrane filters: the water outlet of second coagulation is passed through modified polyvinilidene fluorine second
Alkene nanofiber membrane filter, removes 95% or more inorganic salts, and effluent quality reaches industrial reuse water quality standard.
Preferably, composite flocculation agent used in step 2 and step 4, is prepared by following raw material in parts by weight: living
Property 15 parts of carbon fiber, 4 parts of acrylamide, 0.003 part of initiator, 2 parts of sodium carboxymethylcellulose, 5 parts of polyvinyl alcohol, crosslinking agent 3
Part, 4 parts of cysteine-modifying three-dimensional grapheme, 10 parts of starch xanthate, 15 parts of modified alta-mud, 5 parts of activating fly ash.
Preferably, the initiator is ammonium ceric nitrate；The crosslinking agent is N, N '-methylene-bisacrylamide, N, N'- bis-
One or more of allyl tartaric acid diamides, divinylbenzene.
Preferably, the method for preparing modified bentonite is first to be uniformly mixed bentonite solution with hydrotalcite solution,
It adds urea to stir evenly, is transferred to autoclave, reacts 5h at 120 DEG C, the solid reacted is washed, dried i.e.
?.
Preferably, the activation temperature of the activating fly ash is 350 DEG C.
Preferably, the preparation method of the composite flocculation agent, comprising the following steps:
I, copolyreaction: being added starch xanthate, cysteine-modifying three-dimensional grapheme in distilled water, and stirring is equal
It is even, acrylamide monomer solution is injected, 45 ± 5 DEG C of stirring in water bath reactions are added dropwise initiator after leading to nitrogen 10min, continue to stir
Sticky fluffy wadding body to appear, dries, pulverizes；
II, prepared by mixed material: in deionized water by step 1 copolyreaction product ultrasonic disperse, bentone is added
Soil, activated carbon fibre, activating fly ash, ultrasonic disperse is uniform, obtains mixed material；
III, solution is prepared: in deionized water by sodium carboxymethylcellulose, polyvinyl alcohol dissolution, keeping temperature is 80 ± 5
DEG C, 6h is persistently stirred, solution is configured to；
IV, prepared by flocculant: mixed material obtained by step 2 is added in poly-vinyl alcohol solution, adds crosslinking agent, 55
DEG C insulation reaction 2h is to get composite flocculation agent.
Preferably, load has TiO in step 32-WO3Carbon fibre web be to pass through Best-Effort request using carbon fibre web as carrier
Method is by TiO2-WO3Colloidal sol is carried on carbon fiber surface, carries out annealing to it using superheated steam and is made.
Preferably, modified polyvinilidene fluoride nano fibrous membrane is Ag-SiO in step 52- PVDF blending and modifying composite membrane,
Preparation method are as follows: PVDF original film is first subjected to surface hydroxylation, be then soaked into the n-hexane oil solution of TMC 30min into
Row TMC is modified, is finally immersed in Ag-SiO260~90min in dispersion liquid adjusts pH to 9, and pure water is cleaned, obtained by drying.
Embodiment 2
A kind of compound sewage processing method, method includes the following steps:
Step 1: cylinder machine filters: the compound sewage of plant emissions passes through cylinder machine, removes the floating material in water, suspends
The impurity such as object；
Step 2: coagulating sedimentation: the filtered water outlet of cylinder machine is passed through in coagulation reaction tank, is added by the dosage of 200g/t
Enter composite flocculation agent, after quickly stirring 20s, then standing sedimentation 1h completes mud-water separation in siphon mud discharge type horizontal flow basin, removes
Remove particulate matter, dye molecule, most heavy metals and the larger molecular organics in water；
Step 3: photocatalytic degradation: horizontal flow basin water outlet is passed through photocatalytic degradation reactor (Fig. 1 through reflux pump (1 in Fig. 1)
It is shown), reactor is horizontal cylindrical, and wall (2 in Fig. 1) is opaque, and internal longitudinal uniformly arrangement multilayer load has TiO2-WO3
Carbon fibre web (6 in Fig. 1), be equipped with mechanical stirring stick (5 in Fig. 1) between carbon fibre web interval, the setting of reactor axial centre
Having column light source (3 in Fig. 1), reactor upper right side connects exhaust gas processing device (4 in Fig. 1) and connects, the reaction time 15~
30min, by dye molecule, the direct mineralising of small organic molecule, the heavy metal of complexing is released in water body；
Step 4: second coagulation: the water outlet of photocatalytic degradation reactor being passed through in second coagulation pond, by the throwing of 50g/t
Composite flocculation agent is added in dosage, carries out second coagulation, removes in water after remaining micro flocculant, organic matter and photocatalytic degradation
The complexation heavy metal ion of release；
Step 5: modified polyvinilidene fluoride nano fibrous membrane filters: the water outlet of second coagulation is passed through modified polyvinilidene fluorine second
Alkene nanofiber membrane filter, removes 95% or more inorganic salts, and effluent quality reaches industrial reuse water quality standard.
Preferably, composite flocculation agent used in step 2 and step 4, is prepared by following raw material in parts by weight: living
Property 20 parts of carbon fiber, 8 parts of acrylamide, 0.004 part of initiator, 5 parts of sodium carboxymethylcellulose, 10 parts of polyvinyl alcohol, crosslinking agent 4
Part, 6 parts of cysteine-modifying three-dimensional grapheme, 13 parts of starch xanthate, 20 parts of modified alta-mud, 10 parts of activating fly ash.
Preferably, the initiator is ammonium ceric nitrate；The crosslinking agent is N, N '-methylene-bisacrylamide, N, N'- bis-
One or more of allyl tartaric acid diamides, divinylbenzene.
Preferably, the method for preparing modified bentonite is first to be uniformly mixed bentonite solution with hydrotalcite solution,
It adds urea to stir evenly, is transferred to autoclave, reacts 5h at 120 DEG C, the solid reacted is washed, dried i.e.
?.
Preferably, the activation temperature of the activating fly ash is 350 DEG C.
Preferably, the preparation method of the composite flocculation agent, comprising the following steps:
I, copolyreaction: being added starch xanthate, cysteine-modifying three-dimensional grapheme in distilled water, and stirring is equal
It is even, acrylamide monomer solution is injected, 45 ± 5 DEG C of stirring in water bath reactions are added dropwise initiator after leading to nitrogen 15min, continue to stir
Sticky fluffy wadding body to appear, dries, pulverizes；
II, prepared by mixed material: in deionized water by step 1 copolyreaction product ultrasonic disperse, bentone is added
Soil, activated carbon fibre, activating fly ash, ultrasonic disperse is uniform, obtains mixed material；
III, solution is prepared: in deionized water by sodium carboxymethylcellulose, polyvinyl alcohol dissolution, keeping temperature is 80 ± 5
DEG C, 7h is persistently stirred, solution is configured to；
IV, prepared by flocculant: mixed material obtained by step 2 is added in poly-vinyl alcohol solution, adds crosslinking agent, 65
DEG C insulation reaction 3h is to get composite flocculation agent.
Preferably, load has TiO in step 32-WO3Carbon fibre web be to pass through Best-Effort request using carbon fibre web as carrier
Method is by TiO2-WO3Colloidal sol is carried on carbon fiber surface, carries out annealing to it using superheated steam and is made.
Preferably, modified polyvinilidene fluoride nano fibrous membrane is Ag-SiO in step 52- PVDF blending and modifying composite membrane,
Preparation method are as follows: PVDF original film is first subjected to surface hydroxylation, be then soaked into the n-hexane oil solution of TMC 30min into
Row TMC is modified, is finally immersed in Ag-SiO275min in dispersion liquid adjusts pH to 9, and pure water is cleaned, obtained by drying.
Embodiment 3
A kind of compound sewage processing method, method includes the following steps:
Step 1: cylinder machine filters: the compound sewage of plant emissions passes through cylinder machine, removes the floating material in water, suspends
The impurity such as object；
Step 2: coagulating sedimentation: the filtered water outlet of cylinder machine is passed through in coagulation reaction tank, is added by the dosage of 200g/t
Enter composite flocculation agent, after quickly stirring 20s, then standing sedimentation 1h completes mud-water separation in siphon mud discharge type horizontal flow basin, removes
Remove particulate matter, dye molecule, most heavy metals and the larger molecular organics in water；
Step 3: photocatalytic degradation: horizontal flow basin water outlet is passed through photocatalytic degradation reactor (Fig. 1 through reflux pump (1 in Fig. 1)
It is shown), reactor is horizontal cylindrical, and wall (2 in Fig. 1) is opaque, and internal longitudinal uniformly arrangement multilayer load has TiO2-WO3
Carbon fibre web (6 in Fig. 1), be equipped with mechanical stirring stick (5 in Fig. 1) between carbon fibre web interval, the setting of reactor axial centre
Having column light source (3 in Fig. 1), reactor upper right side connects exhaust gas processing device (4 in Fig. 1) and connects, the reaction time 15~
30min, by dye molecule, the direct mineralising of small organic molecule, the heavy metal of complexing is released in water body；
Step 4: second coagulation: the water outlet of photocatalytic degradation reactor being passed through in second coagulation pond, by the throwing of 50g/t
Composite flocculation agent is added in dosage, carries out second coagulation, removes in water after remaining micro particulate matter, organic matter and photocatalytic degradation
The complexation heavy metal ion of release；
Step 5: modified polyvinilidene fluoride nano fibrous membrane filters: the water outlet of second coagulation is passed through modified polyvinilidene fluorine second
Alkene nanofiber membrane filter, removes 95% or more inorganic salts, and effluent quality reaches industrial reuse water quality standard.
Preferably, composite flocculation agent used in step 2 and step 4, is prepared by following raw material in parts by weight: living
Property 25 parts of carbon fiber, 11 parts of acrylamide, 0.006 part of initiator, 9 parts of sodium carboxymethylcellulose, 17 parts of polyvinyl alcohol, crosslinking agent
6 parts, 8 parts of cysteine-modifying three-dimensional grapheme, 15 parts of starch xanthate, 26 parts of modified alta-mud, 15 parts of activating fly ash.
Preferably, the initiator is ammonium ceric nitrate；The crosslinking agent is N, N '-methylene-bisacrylamide, N, N'- bis-
One or more of allyl tartaric acid diamides, divinylbenzene.
Preferably, the method for preparing modified bentonite is first to be uniformly mixed bentonite solution with hydrotalcite solution,
It adds urea to stir evenly, is transferred to autoclave, reacts 5h at 120 DEG C, the solid reacted is washed, dried i.e.
?.
Preferably, the activation temperature of the activating fly ash is 350 DEG C.
Preferably, the preparation method of the composite flocculation agent, comprising the following steps:
I, copolyreaction: being added starch xanthate, cysteine-modifying three-dimensional grapheme in distilled water, and stirring is equal
It is even, acrylamide monomer solution is injected, 45 ± 5 DEG C of stirring in water bath reactions are added dropwise initiator after leading to nitrogen 20min, continue to stir
Sticky fluffy wadding body to appear, dries, pulverizes；
II, prepared by mixed material: in deionized water by step 1 copolyreaction product ultrasonic disperse, bentone is added
Soil, activated carbon fibre, activating fly ash, ultrasonic disperse is uniform, obtains mixed material；
III, solution is prepared: in deionized water by sodium carboxymethylcellulose, polyvinyl alcohol dissolution, keeping temperature is 80 ± 5
DEG C, 8h is persistently stirred, solution is configured to；
IV, prepared by flocculant: mixed material obtained by step 2 is added in poly-vinyl alcohol solution, adds crosslinking agent, 75
DEG C insulation reaction 4h is to get composite flocculation agent.
Preferably, load has TiO in step 32-WO3Carbon fibre web be to pass through Best-Effort request using carbon fibre web as carrier
Method is by TiO2-WO3Colloidal sol is carried on carbon fiber surface, carries out annealing to it using superheated steam and is made.
Preferably, modified polyvinilidene fluoride nano fibrous membrane is Ag-SiO in step 52- PVDF blending and modifying composite membrane,
Preparation method are as follows: PVDF original film is first subjected to surface hydroxylation, be then soaked into the n-hexane oil solution of TMC 30min into
Row TMC is modified, is finally immersed in Ag-SiO290min in dispersion liquid adjusts pH to 9, and pure water is cleaned, obtained by drying.
Comparative example 1
Flocculant used is polyacrylamide flocculant in step 2 and step 4, remaining is the same as embodiment 2.
Comparative example 2
Second coagulation is not carried out, remaining is the same as embodiment 2.
The sewage of certain textile mills is handled using the compound sewage processing method in the embodiment of the present invention 1~3, waste water
Water quality indicator are as follows: suspended matter (SS) 840~1130mg/L, 620~830 times of coloration, COD (COD) 850~1460mg/
L, biochemical oxygen demand (BOD) (BOD) 320~580mg/L, 630~780mg/L of ammonia nitrogen, 640~750mg/L of total hardness, copper 5.23~
21.31mg/L, 2.90~4.17mg/L of chromium, 3.01~4.96mg/L of lead, 2030~2190us/cm of conductivity, are discharged after processing
Water quality is as shown in table 1:
Pollutant load after the processing of 1 Examples 1 to 3 compound sewage of table
Pollutant load after being handled by 1 Examples 1 to 3 compound sewage of table is it is found that compound sewage provided by the invention is handled
Method is greater than 99.7% to removal efficiency, can significantly reduce the coloration of compound sewage, and removal rate is greater than 98%；Removal has
The removal rate that machine object removal rate is greater than 97.0%, inorganic salts is greater than 95%, and common heavy metal removal rate is greater than 99%, is discharged nothing
Color, tasteless, water quality meets industrial reuse water quality standard.And the effluent quality of comparative example 1 and comparative example 2 obviously not as good as embodiment 1~
3, suspended matter, coloration, organic matter, heavy metal removal rate be decreased obviously, this illustrates flocculation used in embodiment coagulation process
Agent is great on the influence of the removal effect of every pollutant, also indicates that second coagulation plays in terms of improving water pollutant removal rate
Key effect.
To sum up, compound sewage processing method provided by the invention, first by mechanical filter remove most impurity and
Suspended matter；Peculiar smell, most of dye molecule, organic matter and complexation heavy metal ion are adsorbed by coagulating sedimentation again, and by quiet
It sets sedimentation to separate with water body, significantly reduces the coloration of waste water；Energy is provided by ultraviolet light in photocatalytic degradation reactor,
TiO2-WO3As photochemical catalyst, can be water by the organic dyestuff of difficult for biological degradation and the thorough light degradation of other small organic molecules,
Carbon dioxide and inorganic salts, so that the organic matter in sewage is completely removed, so that COD removal rate declines in 97% or more, BOD
To 5mg/L hereinafter, the process is easy to operate, treatment effeciency is high, without secondary pollution, moreover it is possible to play the role of sterilizing；It is secondary
Coagulation can remove the heavy metal ion discharged after photocatalytic degradation and other minimal residue organic pollutants and particulate matter, guarantee
Major pollutants removal rate is 90% or more；Modified polyvinilidene fluoride nano fibrous membrane integrates desalination and sterilization, can take off
Go out total hardness of water except most of inorganic salts, after processing and be less than 200mg/L, while having good bactericidal effect.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, ability
Other modifications or equivalent replacement that domain those of ordinary skill makes technical solution of the present invention, without departing from skill of the present invention
The spirit and scope of art scheme, are intended to be within the scope of the claims of the invention.
Claims (8)
1. a kind of compound sewage processing method, which is characterized in that method includes the following steps:
Step 1: cylinder machine filters: the compound sewage of plant emissions passes through cylinder machine, removes floating material, suspended matter etc. in water
Impurity；
Step 2: coagulating sedimentation: the filtered water outlet of cylinder machine is passed through in coagulation reaction tank, is added by the dosage of 200 g/t
Composite flocculation agent, after quickly stirring 20 s, then 1 ~ 2 h of standing sedimentation completes mud-water separation in siphon mud discharge type horizontal flow basin,
Remove particulate matter, dye molecule, most heavy metals and the larger molecular organics in water；
Step 3: photocatalytic degradation: horizontal flow basin water outlet is passed through photocatalytic degradation reactor, and reactor is horizontal cylindrical, wall
Opaque, internal longitudinal uniformly arrangement multilayer load has TiO2-WO3Carbon fibre web, carbon fibre web stirs between interval equipped with machinery
Stick is mixed, reactor axis connects exhaust gas processing device, reaction time 15 ~ 30 to column light source, reactor upper right side is provided centrally with
Min, by dye molecule, the direct mineralising of small organic molecule, the heavy metal of complexing is released in water body；
Step 4: second coagulation: the water outlet of photocatalytic degradation reactor being passed through in second coagulation pond, by the dosage of 50 g/t
Composite flocculation agent is added, carries out second coagulation, removes in water and is discharged after remaining micro particulate matter, organic matter and photocatalytic degradation
Complexing heavy metal；
Step 5: modified polyvinilidene fluoride nano fibrous membrane filters: the water outlet of second coagulation being passed through modified polyvinilidene fluoride and is received
Rice cellulose membrane filter, removes 95% or more inorganic salts, and effluent quality reaches industrial reuse water quality standard.
2. the processing method of dyeing waste water according to claim 1, which is characterized in that used multiple in step 2 and step 4
Flocculant is closed, is prepared by following raw material in parts by weight: 15 ~ 25 parts of activated carbon fiber, 4 ~ 11 parts of acrylamide, initiator
0.003 ~ 0.006 part, 2 ~ 9 parts of sodium carboxymethylcellulose, 5 ~ 17 parts of polyvinyl alcohol, 3 ~ 6 parts of crosslinking agent, cysteine-modifying three-dimensional
4 ~ 8 parts of graphene, 10 ~ 15 parts of starch xanthate, 15 ~ 26 parts of modified alta-mud, 5 ~ 15 parts of activating fly ash.
3. the processing method of dyeing waste water according to claim 2, which is characterized in that the initiator is ammonium ceric nitrate；
The crosslinking agent is N, N '-methylene-bisacrylamide, N, one in N'- diallyl tartardiamide, divinylbenzene
Kind is several.
4. the processing method of dyeing waste water according to claim 2, which is characterized in that the preparation side of the modified alta-mud
Method is first to be uniformly mixed bentonite solution with hydrotalcite solution, adds urea and stirs evenly, is transferred to autoclave,
5 h are reacted at 120 DEG C, the solid reacted is washed, is drying to obtain.
5. the processing method of dyeing waste water according to claim 2, which is characterized in that the activation temperature of the activating fly ash
Degree is 350 DEG C.
6. the processing method of dyeing waste water according to claim 2, which is characterized in that the preparation side of the composite flocculation agent
Method, comprising the following steps:
I, copolyreaction: starch xanthate, cysteine-modifying three-dimensional grapheme being added in distilled water, stirs evenly, and infuse
Enter acrylamide monomer solution, 45 ± 5 DEG C of stirring in water bath reactions are added dropwise initiator after leading to 10 ~ 20 min of nitrogen, continue to stir
Sticky fluffy wadding body to appear, dries, pulverizes；
II, prepared by mixed material: in deionized water by step 1 copolyreaction product ultrasonic disperse, addition modified alta-mud,
Activated carbon fibre, activating fly ash, ultrasonic disperse is uniform, obtains mixed material；
III, solution is prepared: in deionized water by sodium carboxymethylcellulose, polyvinyl alcohol dissolution, keeping temperature is 80 ± 5 DEG C,
6 ~ 8 h are persistently stirred, solution is configured to；
IV, prepared by flocculant: mixed material obtained by step 2 is added in poly-vinyl alcohol solution, adds crosslinking agent, 55 ~ 75
DEG C 2 ~ 4 h of insulation reaction is to get composite flocculation agent.
7. the processing method of dyeing waste water according to claim 1, which is characterized in that load has TiO in step 32-WO3
Carbon fibre web be using carbon fibre web as carrier, by dip-coating method by TiO2-WO3Colloidal sol is carried on carbon fiber surface, utilizes
Superheated steam carries out annealing to it and is made.
8. the processing method of dyeing waste water according to claim 1, which is characterized in that modified polyvinilidene fluoride in step 5
Nano fibrous membrane is Ag-SiO2- PVDF blending and modifying composite membrane, preparation method are as follows: PVDF original film is first subjected to surface hydroxyl
Change, is then soaked into 30 min progress TMC in the n-hexane oil solution of TMC and is modified, be finally immersed in Ag-SiO260 in dispersion liquid ~
90 min adjust pH to 9, and pure water is cleaned, obtained by drying.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228587.4A CN109734228B (en) | 2019-03-25 | 2019-03-25 | Composite sewage treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910228587.4A CN109734228B (en) | 2019-03-25 | 2019-03-25 | Composite sewage treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109734228A true CN109734228A (en) | 2019-05-10 |
| CN109734228B CN109734228B (en) | 2021-11-09 |
Family
ID=66371345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910228587.4A Active CN109734228B (en) | 2019-03-25 | 2019-03-25 | Composite sewage treatment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109734228B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902801A (en) * | 2019-12-11 | 2020-03-24 | 深圳大学 | Carbon fiber net, preparation and recovery method and application thereof in sewage treatment |
| CN111439877A (en) * | 2020-04-16 | 2020-07-24 | 苏州大学 | Intelligent urban rainwater treatment device and analysis system |
| CN111533348A (en) * | 2020-05-22 | 2020-08-14 | 云南云铜锌业股份有限公司 | Method and device for removing ammonia nitrogen in zinc smelting wastewater |
| CN112934947A (en) * | 2021-03-31 | 2021-06-11 | 郑州大学 | Ecological restoration method for mining wasteland |
| CN113634134A (en) * | 2021-08-13 | 2021-11-12 | 江苏威久科技发展有限公司 | Carbon fiber composite filtering membrane for sewage treatment and preparation method thereof |
| CN113666508A (en) * | 2021-08-16 | 2021-11-19 | 山东得和明兴生物科技有限公司 | Microbial composite product for improving water quality and preparation method thereof |
| CN116986657A (en) * | 2023-09-25 | 2023-11-03 | 新乡学院 | Sewage detection treatment system and method based on silicon-based aerogel |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1978337A (en) * | 2005-12-01 | 2007-06-13 | 曹健 | Printing-dyeing waste water treatment process |
| CN102701500A (en) * | 2012-06-25 | 2012-10-03 | 龙岩市康琦环保科技有限公司 | Printing and dyeing wastewater zero-discharge reuse treatment method |
| CN103143265A (en) * | 2013-01-23 | 2013-06-12 | 丽水学院 | Ultrafiltration membrane with hydrophilism and antibacterial property and preparation method thereof |
| CN105597576A (en) * | 2015-12-25 | 2016-05-25 | 西南石油大学 | Preparation method of beta-cyclodextrin grafted polyvinylidene fluoride ultrafiltration membrane |
| CN106310980A (en) * | 2016-08-18 | 2017-01-11 | 广州清沃膜材料科技有限公司 | Antibacterial external-pressure polyvinylidene fluoride hollow fiber membrane |
| CN106582324A (en) * | 2016-12-30 | 2017-04-26 | 哈尔滨工业大学 | Production method of nano-silver/silica core-shell doped PVDF ultrafilter membrane |
| CN108393087A (en) * | 2018-03-28 | 2018-08-14 | 华南农业大学 | A kind of method of activated carbon fiber loaded catalysis material |
-
2019
- 2019-03-25 CN CN201910228587.4A patent/CN109734228B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1978337A (en) * | 2005-12-01 | 2007-06-13 | 曹健 | Printing-dyeing waste water treatment process |
| CN102701500A (en) * | 2012-06-25 | 2012-10-03 | 龙岩市康琦环保科技有限公司 | Printing and dyeing wastewater zero-discharge reuse treatment method |
| CN103143265A (en) * | 2013-01-23 | 2013-06-12 | 丽水学院 | Ultrafiltration membrane with hydrophilism and antibacterial property and preparation method thereof |
| CN105597576A (en) * | 2015-12-25 | 2016-05-25 | 西南石油大学 | Preparation method of beta-cyclodextrin grafted polyvinylidene fluoride ultrafiltration membrane |
| CN106310980A (en) * | 2016-08-18 | 2017-01-11 | 广州清沃膜材料科技有限公司 | Antibacterial external-pressure polyvinylidene fluoride hollow fiber membrane |
| CN106582324A (en) * | 2016-12-30 | 2017-04-26 | 哈尔滨工业大学 | Production method of nano-silver/silica core-shell doped PVDF ultrafilter membrane |
| CN108393087A (en) * | 2018-03-28 | 2018-08-14 | 华南农业大学 | A kind of method of activated carbon fiber loaded catalysis material |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110902801A (en) * | 2019-12-11 | 2020-03-24 | 深圳大学 | Carbon fiber net, preparation and recovery method and application thereof in sewage treatment |
| CN110902801B (en) * | 2019-12-11 | 2022-04-19 | 深圳大学 | Carbon fiber net, preparation and recovery method and application thereof in sewage treatment |
| CN111439877A (en) * | 2020-04-16 | 2020-07-24 | 苏州大学 | Intelligent urban rainwater treatment device and analysis system |
| WO2021208445A1 (en) * | 2020-04-16 | 2021-10-21 | 苏州大学 | Intelligent urban rainwater treatment apparatus and analysis system |
| CN111533348A (en) * | 2020-05-22 | 2020-08-14 | 云南云铜锌业股份有限公司 | Method and device for removing ammonia nitrogen in zinc smelting wastewater |
| CN112934947A (en) * | 2021-03-31 | 2021-06-11 | 郑州大学 | Ecological restoration method for mining wasteland |
| CN112934947B (en) * | 2021-03-31 | 2022-06-14 | 郑州大学 | Ecological restoration method for mining wasteland |
| CN113634134A (en) * | 2021-08-13 | 2021-11-12 | 江苏威久科技发展有限公司 | Carbon fiber composite filtering membrane for sewage treatment and preparation method thereof |
| CN113666508A (en) * | 2021-08-16 | 2021-11-19 | 山东得和明兴生物科技有限公司 | Microbial composite product for improving water quality and preparation method thereof |
| CN116986657A (en) * | 2023-09-25 | 2023-11-03 | 新乡学院 | Sewage detection treatment system and method based on silicon-based aerogel |
| CN116986657B (en) * | 2023-09-25 | 2023-12-26 | 新乡学院 | Sewage detection treatment system and method based on silicon-based aerogel |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109734228B (en) | 2021-11-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109734228A (en) | A kind of compound sewage processing method | |
| Qiao et al. | Pre-oxidation with KMnO4 changes extra-cellular organic matter's secretion characteristics to improve algal removal by coagulation with a low dosage of polyaluminium chloride | |
| WO2020010678A1 (en) | Novel material for in-situ decontamination of turbid river water and preparation method thereof | |
| CN107311387B (en) | A kind of deep treatment method of dyeing waste water | |
| CN102616881A (en) | Treatment process for printing and dyeing wastewater | |
| CN109734145A (en) | A kind for the treatment of of dyeing wastewater composite flocculation agent | |
| CN105130096B (en) | A kind of chemical engineering sewage advanced treatment system | |
| CN109133508A (en) | The high-efficient treatment method of textile printing and dyeing wastewater | |
| CN105461032A (en) | Sewage treatment flocculant and application thereof | |
| CN109879539A (en) | A kind of waste water of basic printing and dyeing circular regeneration processing method | |
| CN107540135A (en) | A kind of safe and efficient percolate nanofiltration concentrate processing group technology | |
| CN106745591A (en) | A kind of preparation method of heavy metal ion adsorbed type composite flocculation agent and products thereof | |
| CN106336038A (en) | Treatment method for heavy metal-containing polluted wastewater | |
| CN107585970A (en) | The technique of hardly degraded organic substance advanced treating in a kind of Industrial reverse osmosis concentrated water | |
| CN101502761A (en) | Technique for preparing ethylenediamine tetraacetic acid modified polyvinylidene fluoride separation membrane and resin | |
| CN105417851B (en) | Treatment method of printing and dying wastewater and its Compound biological flocculant preparation method | |
| CN108585276A (en) | A kind of river sewage processing method | |
| CN105693007B (en) | It is a kind of can be with the chemical engineering sewage advanced treatment system of deodorization | |
| CN108059297A (en) | A kind of carbon nano tube compound material sewage treatment drug and processing method | |
| CN112744979A (en) | Method for treating micro-polluted water | |
| CN104973722B (en) | A kind of dyeing and printing sewage processing system | |
| CN209113686U (en) | A kind of combination unit handling hc effluent with high salt | |
| CN106745592A (en) | It is a kind of with heavy metal ion adsorbed and detection function composite flocculation agent and preparation method thereof | |
| CN110002527A (en) | It is water body dephosphorized dose a kind of and preparation method thereof | |
| CN110436680A (en) | A kind of processing method of nanoparticles to pharmaceutical wastewater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |