CN103466731B - A kind of fiber base sewage decoloring scavenging material and preparation method thereof - Google Patents
A kind of fiber base sewage decoloring scavenging material and preparation method thereof Download PDFInfo
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Abstract
A kind of fiber base sewage decoloring scavenging material, is characterized in that: this material is made up of component (I) and component (II), and component (II) accounts for the 5-10% of total mass; Described component (I) be followed successively by 36% formaldehyde solution of 1.0 ~ 1.3:0.50 ~ 0.65:0.60 ~ 0.70:0.06 ~ 0.09 by mass ratio, product that Dyhard RU 100, ammonium chloride, property-modifying additive A are obtained by reacting, described property-modifying additive A is the mixture that magnesium sulfate and magnesium chloride are mixed to get according to mass ratio 2.0 ~ 3.5:8.0 ~ 6.5 ratio; Described component (II) is the natural fiber (plant and/or animal) through cation modifier modification.This material is a kind of collection decolouring, flocculates, tangles, removes the multi-functional sewage decoloring scavenging materials such as COD.Reach more than 93% to the percent of decolourization of sewage, COD value clearance exceeds more than 10% than prior art, can realize Treated sewage reusing, reduces sewage discharge.
Description
One, technical field
The present invention relates to sewage treating material preparation, specifically a kind of for dyeing sewage decoloration fiber base sewage decoloring scavenging material preparation method.
Two, background technology
Because industrialization, Development of China's Urbanization are accelerated, China's water scarcity, distributed pole are uneven, surface water, groundwater pollution are on the rise, and have become the restraining factors of building beautiful China, sustainable economic development, social harmonious development, the shortage of the water pollutions be on the rise heavy water resource more.China is textile printing and dyeing processing base the biggest in the world, and annual processing fiber amount reaches more than 2,000 ten thousand tons, relates to cotton, fiber crops, silk, hair, chemical fibre etc., the coloured sewage discharge expanding day of textile printing and dyeing.
Wherein dyeing and printing sewage dye discoloration is the most serious, and more than Chinese dyestuff Year's consumption few hundred thousand tonnes of, kind reaches hundreds of, and in dyeing process, the tinctorial yield of dyestuff on fabric only has 70-80%, and the dyestuff of not upper dye forms the sewage of high-concentration and high-chromaticity.Dyeing and printing sewage is industrial wastewater discharge rich and influential family, and quantity discharged accounts for 1/10 of industrial sewage total release, and China about has 6 × 10 every year
8~ 7 × 10
8t dyeing and printing sewage discharges, constantly dilution, repeated contamination, is difficult to process.Realize the Sustainable development of dyeing, thoroughly must solve dyeing and printing sewage pollution problem!
The feature of dyeing and printing sewage is that quantity discharged is large, complicated component, organic content are high, colourity is dark, chemical oxygen demand (COD) (CODcr) is high, and biochemical oxygen demand (BOD) (BOD5) is relatively low, biodegradability is poor, except containing except dyestuff, auxiliary agent and slurry, also containing the toxic organic pollutant containing groups such as phenyl ring, amido, azos such as heavy metal ion, aniline, oil of mirbane, O-phthalic acids in sewage, be difficult to biological degradation, serious environment pollution, mostly be carcinogenic substance, process more general sewage more difficult.The desolventing technology of coloured sewage has become one of domestic and international environmental protection circle urgent need to solve the problem.
Domestic and international dyeing sewage decoloration method at present, has summed up following several:
1, adsorption bleaching
A major advantage of adsorption bleaching dyestuff can be removed from water by the effect of absorption, and adsorption process remains the structure of dyestuff.Gac is widely used in coloured sewage disposal as a kind of superior adsorbent already, so far the best sorbent material of coloured dyeing waste water is still, gac has selectivity to dyestuff, and its decoloration performance order is followed successively by basic dyestuff, substantive dyestuff, matching stain and thioxine dyes.Gac is expensive, regenerates difficulty in addition, is generally only applied to the lower treatment of dyeing wastewater of concentration or advanced treatment.Molecular sieve, active aluminum, granulated active carbon (GAC), diatomite and wood sawdust can be used as the sorbent material of dispersed dyestuff.The greatest problem of sorbent material is to be difficult to realize situ regeneration.S karcher: have developed a kind of novel reproducible sorbent material Cucurbituril, it is a kind of cyclic condensation polymer formed by glycoluril and formaldehyde condensation polymer.Show through great many of experiments, this material is nontoxic, and at Ca
2+concentration 1 ~ 100mmol/L, in solution, the total concn of salt is less than 100-1000mmol/L.Time, can obtain high adsorptive capacity, remaining colourity is very low.
2, redox decolouring
The effective ways that the conjugated system of dyestuff or chromophoric group are printing and dyeing desolventing technology are destroyed by redoxomorphism.Except the oxychlorination method of routine, domestic and international research emphasis mainly concentrates on ozone oxidation, hydrogen peroxide oxidation, electrolytic oxidation and photoxidation aspect.
Ozone is good decolouring oxygenant, for containing water-soluble dyestuff as active, directly, the waste water from dyestuff such as positively charged ion and acidity, its percent of decolourization is very high; Also better decolorizing effect is had to dispersed dye; But other are present in the reduction in waste water, sulfuration and coating with suspended state, decolorizing effect is poor.Ozone oxidation also can with other treatment technology connected applications.As with FeSO
4, Fe
2(SO
4)
3, and FeCl
3, after cohesion, can desolventing technology be improved by ozonize again; Ozone electrolysis treatment can make directly, the percent of decolourization of matching stain increases by 25 ~ 40% than simple ozonize, increases by 10% to alkalescence and reactive dyestuffs.Ozone adds uv-radiation or carries out ionizing rays simultaneously and also can improve oxidation efficiency.Because ozone oxidation is high to dye species wide adaptability, decolorizing efficiency, O simultaneously
3reduzate in waste water and superfluous O
3, O can be decomposed into rapidly in solution and air
2, secondary pollution can not be caused to environment.Therefore O
3decolouring technology has certain industrial applications prospect.The main drawback of current ozone oxidation is that working cost is relatively higher.
Fenton reagent is in process waste water process except having oxygenizement, and also have coagulation concurrently, therefore decolorizing efficiency is higher.Increasingly extensive application is obtained in recent years, traditional H in the desolventing technology of dye well waste water
2o
2oxidation all occurs with the form of Fenton reagent at present.In order to fully understand the decoloring ability of Fenton reagent to various dyestuff, Kuo W G has selected the representative compound covering 90% common dyes kind to carry out modeling effort.Result shows, in acid condition (pH<3), and average percent of decolourization reaches 97%, COD clearance also can reach 90%.
Advanced oxidation processes decolouring is considered to a kind of up-and-coming method.So-called advanced oxidation processes is as UV+H
2o
2, UV+O
3because produce hydroxyl radical free radical in oxidising process, its strong oxidizing property makes decoloring dye waste water.Find that the decolouring of its azo dyes is very effective after deliberation.In actual production, chemical auxiliary can improve decolorizing effect with some. and UV+H
2o
2the degraded product that method process azo reactive dye produces is completely harmless to environment.Nearest research finds that dichloro diazine fundamental mode azo reactive dyestuffs use UV+H
2o
2method decolouring also has good effect.
A wretched insufficiency part of advanced oxidation processes is that processing costs is higher.Thus limit widely using of it.
3, coagulation decoloration treatment technology
(1) inorganic coagulant
The inorganic coagulant of current appearance comprises metallic salt and inorganic polymer polyelectrolyte, wherein based on the compound of molysite, magnesium salts, aluminium salt and silicon, calcium constituent.According to applicable cases, the simple aluminium salt such as aluminium chlorohydroxide, Tai-Ace S 150, trivalent iron salt is all not high to the percent of decolourization of some water-soluble dye wastewaters, and the pH scope used is narrower.FeSO
4all have good decolorizing effect for most of water-soluble dye, such as, process sulphur dyes wastewater, chroma removal rate is 95%, and sulfide and BOD clearance are 96% and 59%.But due to FeSO
4the mechanism of decolouring is reduced by chromophoric group, and reduzate is that organic molecule can not effectively be removed by coagulation, and therefore the clearance of CODcr is not high, and comparatively large to the consumption of basicity in solution, and the consumption of coagulating agent is also larger.
MgO, MgSO
4deng magnesium salts, the Mg (OH) utilizing it to generate in aqueous
2strong adsorption effect, to having good treatment effect containing the water-soluble dye of sulfonic acid group, percent of decolourization, CODcr clearance can reach more than 98% and 70% respectively; .Adopt MgCl
2with Ca (OH)
2process reactive dyestuffs and dispersed dyestuff waste water, its effect is better than A1
2(SO
4)
3, PAC, FeSO
4/ Ca (OH)
2.Its mechanism is Mg
2+with hydroxyl, carboxyl or SO
4 2-reaction generates stable inner complex, and these inner complexs are removed from waste water by throwing out.But also there is the shortcoming of pH narrow range in magnesium salts.
A lot of research and application practice shows, adopt inorganic coagulant to comprise molysite, aluminium salt, magnesium salts and inorganic wadding agent and to the dyestuff be present in waste water with colloid or suspended state, there is good decolorizing effect, substantive dyestuff as larger in the vat dyes after dispersed dye, thioxine dyes, oxidation, the glacial dye after coupling, pigment and molecular weight and neutral dye; To the water-soluble dye not easily forming colloidal particle substantive dyestuff waste water as micromolecular in matching stain, reactive dyestuffs and part, then coagulate decoloring effect is undesirable.
(2) organic floculant
Tensio-active agent: the report that tensio-active agent is used for treatment of dyeing wastewater is a lot, alcohol dissolubility acetic acid stearylamine can be used for processing insoluble dyes, and as the dye cotton wastes water of process Containing Sulfur Black B dyestuff, dyestuff clearance can reach 99.2%.Stoica L octadecyl trimethyl ammonium chloride and cetyl pyridinium bromide salt binding Al
2(SO
4)
3carry out coagulation air-float process when pH value is 4 ~ 11 to the silk dyeing waste water containing acid and substantive dyestuff, percent of decolourization can reach 90 ~ 100%.But the charge neutrality effect of cats product and dye molecule has stronger selectivity, be used alone and be difficult to reach good effect, need and the composite use of aluminium salt.
Natural polymer and modified flocculant thereof: natural organic high-molecular flocculant due to raw material sources extensive.Cheap, nontoxic, be easy to the features such as biological degradation and show good application prospect.Natural macromolecule flocculating agent for treatment of dyeing wastewater mainly contains the three major types such as native starch and derivative, lignin derivative, chitin derivativ.
In wastewater treatment, most of subparticle and colloid are all with negative charge, and in order to improve starch and lignin molecule to the ability to function of these small-molecule substances, carrying out cation-modified is an important research direction.Cation modifying starch and xylogen can process anionic dyestuff, substantive dyestuff and Acid Dye Wastewater, and percent of decolourization is all more than 90%.
Syn-Organic flocculants: the organic polymer coargulator molecular weight of synthesis is high. in molecular chain with active function groups many, range of extension in water is large, and flocculating property is good, and consumption is few, pH scope is wide, all has superior performance in solid-liquid separation operating aspects such as filtration, dehydrations simultaneously.Current polymeric flocculant PAN-DCD effect is best, and it take polyacrylonitrile as main chain, carries out modified side chain in the basic conditions by Dicyanodiamide, makes it to become polyamphoteric electrolyte that is water miscible, band various active group.The decolorizing effect of PAN-DCD centering dyestuff, reactive dyestuffs, matching stain is good, percent of decolourization all reaches more than 90%, has decolouring concurrently and remove the double effects of COD to dyeing waste water, if with polymerize aluminum chloride compound use, removal effect is better, and the highest COD clearance is 63%.Another kind of noticeable discoloring agent is the Dicyandiamine-formaldehyde condensation product occurred in recent years, and it has excellent decolorizing effect for dyeing waste water, but dosage conference improves processing cost.
About flocculating decoloring agent, disclosed Chinese patent has CN101935094A, CN101759264A, CN102515331A, CN101851018A, CN1607185A etc.
For the sulfonic group containing strongly hydrophilic in reactive dyestuffs and substantive dyestuff molecular structure and carboxyl, all with the feature of negative charge after dissolving in water, key is the hydrophilic radical of destruction or closed dyestuff, reduce its hydration, then de-steady under the effect of flocculation agent, coagulation, flocculation. reach the object separated from solution.Nearest Tongji University Environmental capacity and Resource analysis National Key Laboratory succeed in developing TJ series discoloring agent, it has flocculation and precipitation dual function, can the soluble dye such as the various activity of effective elimination, acidity, percent of decolourization reaches 98-100%, for China's treatment of dyeing wastewater provides a good approach; This serial discoloring agent adopts guanidine like polymer, closes the hydrophilic radical of dyestuff, by dye precipitated out.All this discoloring agent can be used, for the not specific requirement of water processing establishment after biochemical treatment or in preprocessing process.
4, other desolventing technology technology
Except absorption, oxidation and coagulation decoloration, both at home and abroad ion-exchange decolouring, ultra-filtration membrane decolouring and biological decolouring technology are also studied.Wherein, adopt the method process of ion-exchange to be studied to the water-soluble dye that ordinary method is difficult to decolour, obtain certain progress.Its research concentrates on ion exchange resin and ion-exchange decolouring fiber two aspects.
Ultrafiltration or reverse osmosis technology can be adopted to carry out desolventing technology for microsolubility dyestuff and the larger dyestuff component of molecular weight, but consider economic feasibility, current ultra-filtration technique is used for high density dye well modifying porcelain, especially to the recycling of insoluble dyes.
Because in dyeing waste water, the biodegradability of dye component is poor, routine biochemistry method always can not be satisfactory in decolouring.Current solution is improved except wastewater biodegradability except taking pre-treatment, mainly screens excellent Decolourization Bacteria and enhanced bio-treatment.With regard to it in general, biological decolouring there is no breakthrough, also must be combined with other treatment process.
In sum, synthesize and produce a kind of efficient, environment-friendly sewage purification and decoloration material that cost performance is excellent and apply it to tool in the process of high chroma sewage and be of great significance.
Three, summary of the invention
The present invention is directed to a difficult problem for sewage decoloring, particularly dyeing sewage decoloration, aim to provide a kind of new sewage decoloring scavenging material, technical problem to be solved gives material several functions, and Here it is, and collection decolours, flocculates, tangles, falls to all over the body, and removes COD simultaneously.
Described new sewage decoloring scavenging material is a kind of fiber base sewage decoloring scavenging material, and this material is made up of component (I) and component (II) mixing, and component (II) accounts for the 5-10% of total mass; Described component (I) be followed successively by 36% formaldehyde solution of 1.0 ~ 1.3:0.50 ~ 0.65:0.60 ~ 0.70:0.06 ~ 0.09 by mass ratio, product (resin) that Dyhard RU 100, ammonium chloride, property-modifying additive A are obtained by reacting, described property-modifying additive A is the mixture that magnesium sulfate and magnesium chloride are mixed to get according to mass ratio 2.0 ~ 3.5:8.0 ~ 6.5 ratio; Described component (II) is the natural fiber through cation modifier modification.
Described natural fiber is selected from plant cellulose or animal protein fiber.
Described vegetable fibre is selected from one or more mixed plant fibers in shell (Pericarppium arachidis hypogaeae, nut-shell etc.), rice husk, cotton seed hulls, crop material, waste of flax, reed, bagasse, corn cob, rice bran, sawdust etc.
Described animal fibre is selected from one or more mixing animal fibres in chicken feather, goose feather, drake feather, the rabbit hair, wool etc. and lint thereof, short fiber.
The modification of the protein fibre described in the present invention and cellulosic fibre, hydroxyl in vegetable fibre Mierocrystalline cellulose is energy partial ionization in water, make cellulosic strip negative charge, due to coloured sewage and the cellulosic strip identical charges of printing and dyeing, there is certain repulsive force, in sewage, colored component is not easily combined with Mierocrystalline cellulose, for this reason, by cellulose graft cation group, make cellulosic strip positive charge, the colored component that so just can improve in sewage is combined with Mierocrystalline cellulose fast, reaches the object removing color.Cellulosic graft copolymerization can be divided into 3 classes: radical polymerization, ionic polymerization and condensation or addition polymerization, graft copolymerization can improve the structure and properties of cellulose and its derivates, its new performance is given while the intrinsic advantage of Mierocrystalline cellulose can be made not to be destroyed, by the modified cellulosic materials that graft copolymerization obtains, there is function of decolouring preferably.
Protein in animal fibre, containing the amino acid of the side bases such as-NH2 and=NH, they can react by salt with epoxy season, and its new performance given by modified protein fiber, have good adsorption bleaching function.
The preparation method of this decolorizing purification material comprises the synthesis of component (I), the preparation of component (II) and mixing, the synthesis of described component (I) is in reactor, add 36% formaldehyde solution of 1/3rd proportional quantities and the Dyhard RU 100 of proportional quantity successively, ammonium chloride, after stirring and dissolving, be warmed up to 40-50 DEG C, reaction 0.5-1.5h, add the property-modifying additive A of proportional quantity and 36% formaldehyde solution of 1/3rd proportional quantities again, react 1.5-2.5h more at this temperature, finally add 36% formaldehyde solution of remaining 1/3rd proportional quantities, thermopositive reaction is warming up to 70-85 DEG C naturally, reaction 3.0-4.0h, cool to room temperature, the reaction product obtained and component (I), by the component (II) of component (I) and preparation, be namely uniformly mixed be fiber base sewage decoloring scavenging material.
Product of the present invention is pasty fluid, pH=6.0 ~ 7.0, is a kind of sewage decoloring scavenging material integrating the functions such as decolouring, flocculation, entanglement, removal COD.Product is rich in high-density positive charge, aqueous synthetic-resin and modification adsorbing fiber etc., have the special efficacy removing sewage color, purify water, on aqueous synthetic-resin, a large amount of positively charged ion can make electric charge on anionic dyestuff molecule be neutralized and unstability, flocculation, sedimentation fast.Tangled by the absorption of fibrillation fiber and form stable flocs unit, mutually tangle, separate and subside speed can be accelerated, in water body, the organic or inorganic gel component of a large amount of dispersion is modified adsorbing fiber absorption, tangled mass, to be separated from water body together with floss is quick, to reach the object removing sewage color, remove COD of sewage, purify water.Can Treated sewage reusing be realized, reduce waste water reduction, improve water body environment.Product of the present invention has that efficiency of disposing of sewage is high, mud is few, and aftertreatment cost is low, reduces the expense of mud transport, non-secondary pollution, Nonpoisonous, non-environmental-pollution.
The present invention passes through the selection of raw material, the optimization of technique, make use of waste straw, waste feathers plumage silk etc. and reduce production cost, improve the flocculation ability of product, have that preparation process is easy to control, simple to operate, product is stablized, produce when being applied to sewage disposal that flco is large, settling velocity fast, percent of decolourization and COD clearance advantage high and with low cost, the desolventing technology of various dyeing waste water can be widely used in and reduce COD.
Product of the present invention has following advantage:
1) raw material sources are extensive, and preparation or extraction are conveniently, cheap.Applied range, is used in the coloured sewage of printing and dyeing and other coloured sewage disposals such as direct, active, acid and dispersed dye.
2) flocculation time short (0.5 ~ 1min flocculation), form flocks fast, the closely knit volume of throw out is little, is easy to filter-press dehydration, reduces mud trucking costs.
3) this product is rich in high-density positive charge, so when water temperature is low, still can keep stable treatment effect.
4) this product is rich in primitive fiber hole sorbing material, broad variety organic composition in adsorbable removing water body, high-efficiency broad spectrum.
5) low cost product of the present invention, easy and simple to handle, take up an area less, processing efficiency is high.
6) product Nonpoisonous, non-environmental-pollution of the present invention, applies this product non-secondary pollution, belongs to environment-friendly sewage purification and decoloration novel material.
7) production technique of the present invention is simple, and top temperature is not higher than 80 DEG C, with low cost.
8) have unique flocculation decoloration, purify water ability, reaches more than 93% to the percent of decolourization of sewage, COD value clearance exceeds more than 10% than prior art, can realize Treated sewage reusing, reduces sewage discharge.
9) product suitability is wide, both can be applicable to dyeing sewage decoloration process, and has also been applicable to the purifying treatment in the waters such as river course, streams, lake, ecological water seedbed, natural landscape waters and water factory's intake.
Four, embodiment
Non-limiting examples is described below.For sake of convenience, be part hereinafter referred to as mass parts.
(1) preparation of property-modifying additive A
Get 275 parts, magnesium sulfate to mix with 725 parts, magnesium chloride and get final product.
(2) preparation of modified fibre
1, the preparation of modified-cellulose vegetable fibre
By cellulose graft cation group, make positively charged, can to significantly improve in sewage that electronegative dyestuff is plain with sorbent fibers fast to be combined, reach the object of decolouring from water.
The preparation of modified-cellulose vegetable fibre: cellulosic graft copolymerization can be divided into 3 classes: radical polymerization ionic polymerization and condensation or addition polymerization graft copolymerization can improve the structure and properties of cellulose and its derivates, and the present invention can be obtained by Mierocrystalline cellulose and epoxy chloropropane, dimethylamine reaction intermediate.(see the volume fourth phase " performance of carboxymethyl cellulose and acrylic amide graft copolymerization and multipolymer " author: Yang Fang Li Gang etc. in " polymer material science and engineering " July the 23rd in 2007).
2, the preparation of modified protein fiber
In animal fibre, some are containing-NH
2with the amino acid of the side bases such as=NH, they can react by salt with epoxy season, and its new performance given by modified protein fiber, have function of decolouring preferably.Protein fibre and cation modifier-epoxy season see figure by reactant salt equation: (see the volume fourth phase in " textile journal " April the 31st in 2010 " synthesis of reactive chitosan quaternary ammonium salt and the application in tussah silk antibacterial finish thereof " author: Lu Yanhua Liu Zhi plum etc.)
(3) preparation of decolorizing purification material
1, (1) adds 33.3 part of 36% formaldehyde solution, 50 parts of Dyhard RU 100s, 60 parts of ammonium chlorides in a kettle. successively, after stirring and dissolving, is warmed up to 40 DEG C, reaction 1h, add 33.3 part of 36% formaldehyde solution and 6 parts of property-modifying additive A again, react 2h more at this temperature, finally add 33.4 part of 36% formaldehyde solution, thermopositive reaction is warming up to 70 DEG C naturally, reaction 3.0h, namely cool to room temperature obtains component (I), appearance colorless clear viscous liquids, pH=6.0 ~ 7.0,20 DEG C of proportion 1.15g/mL.
(2) production equipment is the same, and above-mentioned (1) products obtained therefrom and 11 parts of modified plant fibers (fibrillation vegetable fibre through cation modifier modification) add in reactor, normal temperature stirring at low speed successively, mix and obtain product.
Product is fibre-bearing viscous fluid, pH=6.0 ~ 7.0.
Formulary
| Sequence number | Title | Number |
| 1 | 36% formaldehyde | 100 |
| 2 | Property-modifying additive A | 6 |
| 3 | Dyhard RU 100 | 50 |
| 4 | Ammonium chloride | 60 |
| 5 | Modified cellulose fibre | 11 |
2, (1) adds 43 part of 36% formaldehyde solution, 65 parts of Dyhard RU 100s, 70 parts of ammonium chlorides in a kettle. successively, after stirring and dissolving, is warmed up to 50 DEG C, reaction 1h, add 43 part of 36% formaldehyde solution and 9 parts of property-modifying additive A again, react 2h more at this temperature, finally add 44 part of 36% formaldehyde solution, thermopositive reaction is warming up to 85 DEG C naturally, reaction 4.0h, namely cool to room temperature obtains component (I), and outward appearance is water white transparency thick liquid, pH=6.0 ~ 7.0,20 DEG C of proportion 1.15g/mL.
(2) production equipment is the same, and above-mentioned (1) products obtained therefrom and 27.4 parts of modified protein fibers (fibrillation is through cation modifier modification) add in reactor successively, and normal temperature stirring at low speed, mixes and obtain product.
Product is fibre-bearing pasty fluid, pH=6.0 ~ 7.0.
Formulary
| Sequence number | Title | Number |
| 1 | 36% formaldehyde | 130 |
| 2 | Property-modifying additive A | 9 |
| 3 | Dyhard RU 100 | 65 |
| 4 | Ammonium chloride | 70 |
| 5 | Modified protein fiber | 27.4 |
3, (1) adds 40 part of 36% formaldehyde solution, 58 parts of Dyhard RU 100s, 65 parts of ammonium chlorides in a kettle. successively, after stirring and dissolving, is warmed up to 45 DEG C, reaction 1h, add 40 part of 36% formaldehyde solution and 8 parts of property-modifying additive A again, react 2h more at this temperature, finally add 40 part of 36% formaldehyde solution, thermopositive reaction is warming up to 78 DEG C naturally, reaction 3.5h, namely cool to room temperature obtains component (I), appearance colorless clear viscous liquids, pH=6.0 ~ 7.0,20 DEG C of proportion 1.15g/mL.
(2) production equipment is the same, and above-mentioned (1) products obtained therefrom and 18 parts of modified cellulose fibres (fibrillation through cation modifier modification) add in reactor successively, and normal temperature carries out stirring at low speed, mixes and unanimously namely obtains product.
Product is fibre-bearing pasty fluid, pH=6.0 ~ 7.0.
Formulary
| Sequence number | Title | Number |
| 1 | 36% formaldehyde | 120 |
| 2 | Property-modifying additive A | 8 |
| 3 | Dyhard RU 100 | 58 |
| 4 | Ammonium chloride | 65 |
| 5 | Modified cellulose fibre | 18 |
(4) Application Example
This decolorizing purification material send relevant enterprise to carry out sewage decoloring purifying treatment, its treatment effect far above enterprise discoloring agent.Concrete outcome sees the following form.
Note: above test sewage and be the sewage produced in the daily production process of respective factory.Get representative sewage 1L, add product 1mL of the present invention, stir 3min, after leaving standstill, get supernatant liquor, test colourity, calculating percent of decolourization %, COD and COD clearance.
(5) annex
The testing method of colourity, percent of decolourization and COD and COD clearance.
1, colourity testing method: by trade effluent by certain extension rate, be diluted with water to close to time colourless, record extension rate, represents the colourity of this water sample with this, unit doubly.Instrument: 50ml color-comparison tube, its graticule height wants consistent.Step: 1, get 100 ~ 150 clarification water samples and put in beaker, with white porcelain plate for background, observe and describe its color category.2, divide the water sample getting clarification, be diluted with water to different multiples, point getting 50ml is placed in 50ml colorimetric cylinder respectively, serve as a contrast a white porcelain plate bottom pipe, observe the color of the rear water sample of dilution from top to bottom, and compared with distilled water, until just do not see color, record extension rate now.
2, percent of decolourization (%) method of calculation:
Colority of Sewage Water before the colourity of water (before the desolventing technology after Colority of Sewage Water-desolventing technology)/desolventing technology
3, COD testing method: applied chemistry oxygen requirement (COD) Quick testing instrument 5B-3C measures, manufactured by Lanzhou Lian Hua Environmental Protection Technology Co., Ltd, step: prepare number side reaction pipe and to be placed on the empty cooling tank of cooling frame → to prepare but to measure 2.5ml distilled water be added to each water sample 2.5ml of " 0 " number reaction tubes → measure respectively join successively other reaction tubess → with 1ml batchmeter successively to each reaction tubes add 0.7ml special consumptive material D reagent → with 5ml batchmeter successively to each reaction tubes add the special consumptive material E reagent of 4.8ml and mix → put into successively by each reaction tubes digestion device clear up hole, cover spray guard and press " 10 minutes " key (being preheating to 165 DEG C in advance) → open photometer switch, carry out preheating → digestion device 10 minutes timing alarms to it point out → each sample to be put into successively on the air cooling groove of cooling frame, then press " 2 minutes " key → digestion device 2 minutes timing alarms prompting → add 2.5ml distilled water successively in each reaction tubes and mix → be put into by each reaction tubes in the water-cooling groove of cooling frame and (in water-cooling groove, add tap water in advance), and press " 2 minutes " key → digestion device 2 minutes timing alarms and point out → each reaction tubes is taken out from water-cooling groove, and solution is poured in the cuvette of reference numeral successively.Adjustment spectrometer wavelength is to 610nm, optical path is selected to be 30mm cuvette → " 0 " number cuvette is put into cell, close upper cover, regulate T/100% → other each cuvettes are put into cell successively and closed upper cover according to photometric working method, record the COD value of each sample.
4, COD clearance (%) method of calculation: COD of sewage before the COD of water (before the desolventing technology after COD of sewage-desolventing technology)/desolventing technology.
Claims (1)
1. a fiber base sewage decoloring scavenging material, is characterized in that: this material is made up of component (I) and component (II), and component (II) accounts for the 5-10% of total mass; Described component (I) be followed successively by 36% formaldehyde solution of 1.0 ~ 1.3:0.50 ~ 0.65:0.60 ~ 0.70:0.06 ~ 0.09 by mass ratio, product that Dyhard RU 100, ammonia chloride, property-modifying additive A are obtained by reacting, described property-modifying additive A is the mixture that magnesium sulfate and magnesium chloride are mixed to get according to mass ratio 2.0 ~ 3.5:8.0 ~ 6.5 ratio; Described component (II) is the natural animal fibres through cation modifier modification; Described animal fibre is selected from one or more mixing animal fibres in chicken feather, goose feather, drake feather, the rabbit hair, wool and lint thereof, short fiber; Described cation modifier is epoxy quaternary ammonium salt.
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| CN201310451427.9A CN103466731B (en) | 2013-09-27 | 2013-09-27 | A kind of fiber base sewage decoloring scavenging material and preparation method thereof |
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| CN105727900A (en) * | 2016-04-27 | 2016-07-06 | 苏州圣谱拉新材料科技有限公司 | Water purifying material prepared from waste straw and preparation method thereof |
| CN106315802A (en) * | 2016-09-19 | 2017-01-11 | 珠海立德环保科技有限公司 | Powder shaped decolorized flocculant and preparation method thereof |
| CN110586044A (en) * | 2019-09-18 | 2019-12-20 | 广东二十四克垃环保科技有限公司 | Salt reduction adsorbent for papermaking production and preparation method and application thereof |
| CN114288996A (en) * | 2022-01-11 | 2022-04-08 | 三明医学科技职业学院 | Preparation method of printing and dyeing sewage treatment agent based on biomass |
| CN114436362A (en) * | 2022-01-27 | 2022-05-06 | 中国科学院水生生物研究所 | Method for removing algae and algae toxins by coupling positively charged substances with positively charged modified fibers |
| CN115041126B (en) * | 2022-06-13 | 2024-05-07 | 五邑大学 | Adsorbent and preparation method and application thereof |
| CN115739044A (en) * | 2022-11-15 | 2023-03-07 | 西安工程大学 | Wide-area pH organic cationic decolorizing adsorbent and preparation method thereof |
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| CN101327979A (en) * | 2008-07-31 | 2008-12-24 | 南京大学 | Preparation of explosive waste water flocculating decoloring agent |
| CN102764635A (en) * | 2012-08-10 | 2012-11-07 | 广西师范大学 | Method for preparing quaternary ammonium salt cationic absorbing agent by using manioc straw/ manioc waste and application |
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