CN109126705A - A kind of method that high-concentration waste water pollutant is extracted and utilized - Google Patents

A kind of method that high-concentration waste water pollutant is extracted and utilized Download PDF

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Publication number
CN109126705A
CN109126705A CN201811097307.2A CN201811097307A CN109126705A CN 109126705 A CN109126705 A CN 109126705A CN 201811097307 A CN201811097307 A CN 201811097307A CN 109126705 A CN109126705 A CN 109126705A
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waste water
extract
cation exchange
utilized
blocky
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柳荣展
蔡豆豆
潘颖
张宾
石宝龙
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Qingdao University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
    • 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
    • C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00—Multistage treatment of water, waste water or sewage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00—Aspects relating to sorbent materials
    • B01J2220/40—Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/48—Sorbents characterised by the starting material used for their preparation
    • B01J2220/4875—Sorbents characterised by the starting material used for their preparation the starting material being a waste, residue or of undefined composition
    • 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
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • 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
    • C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • 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
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • 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
    • C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
    • C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/10—Inorganic compounds
    • C02F2101/16—Nitrogen compounds, e.g. ammonia
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00—Nature of the contaminant
    • C02F2101/30—Organic compounds
    • C02F2101/308—Dyes; Colorants; Fluorescent agents
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00—General aspects of water treatment
    • C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Inorganic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

The present invention discloses a kind of method that high-concentration waste water pollutant is extracted and utilized, comprising the following steps: appropriate cation exchange material is added into waste water, being stirred to react makes extractable matter in waste water just be condensed into insoluble tiny solid particle；Cation exchange material is isolated, appropriate chemical agent is added into waste water while stirring and generates micro-bubble, bubble is made to stick the tiny solid particle in waste water, reduce waste water viscosity；With ultrasonication and temperature is heated to higher than above 0-20 DEG C of binder softening point, is cohered tiny solid particle mutually, is formed bulky grain solid；Ultrasonic wave isothermal holding certain time causes to form blocky extract；Extract saturation potassium hydroxide solution cooling down；By the blocky extract after drying under nitrogen protection in 700 DEG C of one step carbonization-activation 1-4h, adsorbent is made after being crushed.Adsorbent made from the method for the present invention is to dye of positive ion adsorption capacity up to 450mg/g or more.

Description

A kind of method that high-concentration waste water pollutant is extracted and utilized
Technical field
The invention belongs to environmental protection technical field, in particular to a kind of side high-concentration waste water pollutant extraction and utilized Method.
Background technique
Ink is the important materials for printing, can be divided into oil-based ink and water-based ink.Oil-based ink is with organic molten Agent is solvent, seriously polluted, is gradually eliminated.Water-based ink is mainly by water-soluble binder (resin), pigment, alcohol, amine or ammonia And other additives and water form.Water-based ink is widely used to every field because of its health environment-friendly, safe characteristic. Currently, the packaging materials such as a large amount of plastics use water-based ink in stamp, printing more and more, needed when replacing color Printing equipment and ink reservoir are cleaned, a certain amount of high concentration aqueous's ink jet printing waste water is produced.Contain in this kind of printing waste water There are the pollutants such as pigment, water soluble acrylic resin, alcohol, amine (ammonia), content of organics is more, and coloration is high, pollutes extremely serious (coloration: 30,000 times or more, CODCr: 100,000-50 ten thousand mg/L), it is difficult to it handles.
Processing for this kind of waste water generallys use the chemical methodes such as Coagulation Method and is pre-processed, i.e., adds into waste water Coagulant makes pollutant agglomerate to form sludge, then rolls filter, belt type dewaterer or centrifugal dehydrator etc. using sheet frame and carry out machinery The solid-liquid separating methods such as dehydration are handled, and water outlet recycles other chemistry or bioremediation to qualified discharge.Due to useless Water pollutant concentration is high, and the sludge solid content of formation is up to 5-10%, it is difficult to dehydration, and by mechanism filter-pressing or from The mud cake formed after heart dehydration carries out landfill disposal usually as solid waste, be easy to cause secondary pollution.
In recent years, domestic and foreign scholars to using various pollutants prepare adsorbent and for dye waste water adsorbing and discoloring carry out A large amount of research.Such as Su Shiung Lam utilizes orange peel in microwave-assisted lower obtained adsorbent, to the balance of peacock green Adsorption capacity is up to 28.5 mgg-1；Adsorbent is made using plant residue in Alejandra Alicia etc., contaminates acidity The equilibrium adsorption capacities of material and basic dye are respectively up to 312.5 mgg-1With 500.0 mgg-1；Ta í sL Silva etc. is utilized Adsorbent is made in industrial washing sludge, to reactive dye brilliant blue R equilibrium adsorption capacities up to 36.5 mgg-1；Syieluing Adsorbent is made using weaving sludge in Wong etc., and the equilibrium adsorption capacities to active black and methylene blue are respectively 5 mgg-1 With 3.66 mgg-1；Adsorbent is made using leather-making mud in Geethakarthi A etc., measures it and inhales to the balance of REACTIVE RED 31 Attached capacity reaches 39.37mgg-1；Adsorbent is made using paper mill sludge in Li Wenhong etc., inhales to the balance of Reactive Red 24 Attached capacity is up to 15.68 mgg-1.Adsorbent is prepared with trade waste, not only prevent secondary pollution can be realized solid waste again Resource utilization, have good environmental benefit and social benefit.But with the absorption of adsorbent prepared by trade waste Performance is affected by raw material, and the adsorption effect of sludge base adsorbent is generally far below plant base adsorbent, the absorption to dyestuff It is clearly present the low problem of equilibrium adsorption capacities.
Containing a large amount of organic matter available resources such as water-based acrylic resin in water-based ink sludge, as being prepared At adsorbent and be applied to it is dye decolored, the secondary use of sludge may be implemented." a kind of high concentration is black printed useless for patent of invention The method that liquid pollutant is extracted and utilized " (application number 201610904367.5) summary of the invention is " by high concentration black water oil Ink-printed waste liquid acidification, stirring make pollutant agglomerate to form paste sludge；The 100-500 mesh calcium of 5-10g/L is added into sludge Sludge is heated to 50-90 DEG C of dehydration while stirring after mixing evenly by miberal powder, is made sludge curing at bulk, is taken off Chinese effluent；It takes Sludge hot is squeezed to moisture percentage in sewage sludge dry lower than after 40% out；Sludge isolation air after drying is heated to 400-700 DEG C of guarantor Warm 1-4h；Sludge is cooled to 50 DEG C or less and is broken into graininess, the misty wetting agent that sprinkling mass concentration is 0.1-0.2% is molten It is uniformly mixed after liquid；Mud granule is added in cationic dyeing waste water by 2-10g/L waste water dosage, aeration stirring 10-120min, precipitating or filtering removal mud granule, decolourize discharge of wastewater；Mud granule recycles 400-700 DEG C of hot recycling, follows Ring uses." it is used for cationic dyeing waste water decoloring adsorbent dosage as 5-10g/L waste water.As embodiment 1 " to 92% concentrated sulfuric acid is slowly added in the high concentration black water ink jet printing waste liquid that COD is 39.2 ten thousand mg/L, stirring makes pollutant Cohesion forms sludge；Sludge, is heated to by the 200-500 mesh calcium miberal powder that 8g/L is added into sludge while stirring after mixing evenly 75 DEG C of dehydrations make sludge curing at bulk, take off Chinese effluent；Take out sludge hot squeeze to moisture content it is dry lower than after 40%；It will do Sludge isolation air after dry is heated to 500 DEG C of heat preservation 2h；Sludge is cooled to 50 DEG C or less and is broken into graininess, sprays quality It is uniformly mixed after the misty wetting agent solution that concentration is 0.1%；Mud granule is added to yellow cationic by 5g/L waste water dosage In dyeing waste water, aeration stirring 100min, precipitating removal mud granule, decolourize discharge of wastewater, cationic yellow dyes dye Color decolorization rate of wastewater reaches 99.5% or more." its adsorbent dosage is 5g/L waste water, hence it is evident that there are adsorbent adsorption capacity is low, The big defect of adsorbent amount.
If the adsorption capacity of prepared adsorbent can be improved, adsorbent amount can be greatly reduced, save the cost, at raising Effect is managed, overcomes adsorbent adsorption capacity during cationic dyeing waste water adsorbing and discoloring low, adsorbent amount is big to be lacked It falls into.
Summary of the invention
A kind of method extracted and utilized the invention proposes high-concentration waste water pollutant, can be used for cationic dye wastewater Adsorption bleaching can increase substantially the adsorption capacity of adsorbent prepared by printing waste water extract, reduce adsorbent amount, mention The utilization rate of high adsorbent saves processing cost.
For achieving the above object, the technical method that the present invention uses are as follows:
A kind of method that high-concentration waste water pollutant is extracted and utilized, which comprises the following steps:
(1) suitable cation exchange material is added into waste water, is stirred to react, and handing over for cation exchange material release is utilized The degree of ionization that ion inhibits the ionogen of water-soluble binder in waste water is changed, its solubility is reduced, destroys binder Stability makes extractable matter in waste water be condensed into insoluble tiny solid particle, while solia particle can be made through subsequent processing Ultimately form curable blocky extract；
(2) cation exchange material is isolated, is slowly added into waste water generate small gas with waste water reaction in right amount while stirring The chemical agent of bubble makes bubble stick the tiny solid particle in waste water, and gas, liquid, solid three-phase is formed between tiny solid particle Contact interface prevents the flocculation of tiny solid particle；
(3) it is simultaneously heated to temperature simultaneously with ultrasonication and is higher than water-soluble above 0-20 DEG C of softening point of binder, gradually make thin Small solia particle mutually coheres, and forms the bulky grain solid extract of internal package micro-bubble and water；
(4) ultrasonication and held for some time are kept, using binder macromolecular chain roll up and intermolecular force makes Bulky grain solid extract sufficiently coheres, and volume is constantly shunk, until forming the blocky extract of internal void prosperity, while protecting Keep hole between blocky extract internal particle uniform using ultrasonic wave and heat effect during temperature, keeps extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, stops ultrasonication, water is discharged；
(6) with saturation KOH solution that blocky extract surface fast cooling is cooling, make the quick-hardening of extract surface, reduction mentions Object surface viscosity is taken, and extract is made to fully absorb KOH；
(7) it takes out blocky extract to be fully cooled, extract is lower than to the softening of aqueous high molecular organic matter after being crushed in temperature Low temperature drying below point temperature；
(8) adsorbent is made after being crushed under nitrogen protection in 700 DEG C of one step charing, activation 1-4h in the extract after drying.
Cation exchange material in the step (1) is hydrogen form cation exchange material, is exchanged if sodium form cation Material need to be handled with acid in advance；Chemical agent in the step (2) is one kind of water soluble carbonate hydrogen salt or carbonate Or mixtures thereof；Ultrasonic frequency in the step (3) is greater than 20KHz；In the step (6) saturation potassium hydroxide solution with Extract volume ratio is 3-5:1.
The utility model has the advantages that
A. high concentration aqueous's ink jet printing waste water is after this method extracts pollutant, and decolorization rate of wastewater is up to 99.8% or more, ammonia For nitrogen removal efficiency up to 85% or more, organic pollutant recovery rate is greatly lowered contaminated wastewater load up to 95% or more, convenient for subsequent Processing；
B. the exchangeable ion H of cation exchange material release is utilized+Inhibit water-soluble binder ionogen in waste water Ionization, and generation-COOH group is reacted with binder, internal hydrogen bond is advantageously formed, is sufficiently cohered conducive to extract particles, Volume contraction, and deviate from internal moisture, and cation exchange material has suction-operated to ammonia nitrogen, can remove in waste water simultaneously Part ammonia nitrogen；
C. the tiny solid particle in waste water is sticked with micro-bubble, forms gas, liquid, solid three between tiny solid particle and connects Interface is touched, Gu solid-contact interface energy can be reduced, prevents the flocculation increase of solia particle and subsequent cure closely knit, is conducive to be formed Internal small mesoporous quantity, improves adsorption capacity；
D. temperature is higher than above 0-20 DEG C of binder softening point, and binder macromolecular chain can be made sufficiently to shrink, form new consolidate Body surface face and free volume further increase interior porosity, improve adsorption capacity, and keep sludge curing abundant；
E. ultrasonic wave and heat effect can make micro-bubble inside blocky extract acutely vanish, and generate shock wave, and part is caused to be stirred It is dynamic, keep molecular chain movement violent, be not only conducive to be formed mesoporous but also keep hole between blocky extract internal particle uniform, improves absorption and hold Amount, while being also beneficial to the abjection of extract internal moisture；
F. for prepared adsorbent to when the dye of positive ion solution dosage of concentration 300mg/L is 0.6g/L, adsorption capacity is high Up to 450mg/g or more, up to 95% or more, adsorbent dosage is substantially reduced solution percent of decolourization, improves the utilization of adsorbent Rate.
Specific embodiment
The present invention is further illustrated below by specific embodiment.
Embodiment 1
(1) highly acid hydrogen type cation exchange resin is added into high concentration aqueous's ink jet printing waste water, is stirred to react, reduces water The solubility of soluble macromolecular binder, destroys the stability of binder, until being condensed into extractable matter in waste water just not Dissolubility tiny solid particle；
(2) cation exchange resin is isolated, slowly adds appropriate sodium bicarbonate powder into waste water while stirring, it is anti-with waste water Microbubble should be generated, bubble is made to stick the tiny solid particle in waste water, forms gas, liquid, solid three-phase between tiny solid particle Contact interface；
(3) it is simultaneously heated to temperature simultaneously with the ultrasonication of 40KHz and is higher than 5 DEG C of water-soluble binder softening point or more, gradually It coheres tiny solid particle mutually, forms the bulky grain solid extract of internal package micro-bubble and water；
(4) keep ultrasonication and keep the temperature 20min, using binder strand roll up and power makes the effects of intermolecular hydrogen bonding Bulky grain solid extract is sufficiently cohered, is deformed, and volume is constantly shunk, and forms blocky extract, while sharp in insulating process Keep hole between blocky extract internal particle uniform with ultrasonic wave and heat effect, to keep extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, stops ultrasonication, water is discharged；
(6) blocky extract is placed in saturation potassium hydroxide solution (potassium hydroxide solution is 3:1 with extract volume ratio) makes Its surface cooling is cooling, makes the quick-hardening of extract surface and fully absorbs potassium hydroxide, reduces extract surface viscosity；
(7) it takes out blocky extract to be fully cooled, extract is lower than to the softening of aqueous high molecular organic matter after being crushed in temperature Low temperature drying below point temperature；
(8) absorption is made after being crushed under nitrogen protection in 700 DEG C of one step carbonization-activation 1.5h in the blocky extract after drying Agent.
Embodiment 2
(1) faintly acid hydrogen type cation exchange resin is added into high concentration aqueous's ink jet printing waste water, is stirred to react, reduces water The solubility of soluble macromolecular binder, destroys the stability of binder, until being condensed into extractable matter in waste water just not Dissolubility tiny solid particle；
(2) cation exchange resin is isolated, slowly adds proper amount of sodium carbonate powder into waste water while stirring, with waste water reaction Microbubble is generated, bubble is made to stick the tiny solid particle in waste water, gas, liquid, solid three is formed between tiny solid particle and connects Touch interface；
(3) it is simultaneously heated to temperature simultaneously with the ultrasonication of 40KHz and is higher than 10 DEG C of water-soluble binder softening point or more, gradually It coheres tiny solid particle mutually, forms the bulky grain solid extract of internal package micro-bubble and water；
(4) keep ultrasonication and keep the temperature 25min, using binder strand roll up and power makes the effects of intermolecular hydrogen bonding Bulky grain solid extract is sufficiently cohered, is deformed, and volume is constantly shunk, and forms blocky extract, while sharp in insulating process Keep hole between blocky extract internal particle uniform with ultrasonic wave and heat effect, to keep extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, stops ultrasonication, water is discharged；
(6) blocky extract is placed in saturation potassium hydroxide solution (potassium hydroxide solution is 4:1 with extract volume ratio) makes Its surface cooling is cooling, makes the quick-hardening of extract surface and fully absorbs potassium hydroxide, reduces extract surface viscosity；
(7) it takes out blocky extract to be fully cooled, extract is lower than to the softening of aqueous high molecular organic matter after being crushed in temperature Low temperature drying below point temperature；
(8) absorption is made after being crushed under nitrogen protection in 700 DEG C of one step carbonization-activation 3h in the blocky extract after drying Agent.
Embodiment 3
(1) highly acid hydrogen type cation exchange resin is added into high concentration aqueous's ink jet printing waste water, is stirred to react, reduces water The solubility of soluble macromolecular binder, destroys the stability of binder, until being condensed into extractable matter in waste water just not Dissolubility tiny solid particle；
(2) cation exchange resin is isolated, slowly adds proper amount of sodium carbonate powder into waste water while stirring, with waste water reaction Microbubble is generated, bubble is made to stick the tiny solid particle in waste water, gas, liquid, solid three is formed between tiny solid particle and connects Touch interface；
(3) it is simultaneously heated to temperature simultaneously with the ultrasonication of 40KHz and is higher than 20 DEG C of water-soluble binder softening point or more, gradually It coheres tiny solid particle mutually, forms the bulky grain solid extract of internal package micro-bubble and water；
(4) keep ultrasonication and keep the temperature 20min, using binder strand roll up and power makes the effects of intermolecular hydrogen bonding Bulky grain solid extract is sufficiently cohered, is deformed, and volume is constantly shunk, and forms blocky extract, while sharp in insulating process Keep hole between blocky extract internal particle uniform with ultrasonic wave and heat effect, to keep extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, stops ultrasonication, water is discharged；
(6) blocky extract is placed in saturation potassium hydroxide solution (potassium hydroxide solution is 5:1 with extract volume ratio) makes Its surface cooling is cooling, makes the quick-hardening of extract surface and fully absorbs potassium hydroxide, reduces extract surface viscosity；
(7) it takes out blocky extract to be fully cooled, extract is lower than to the softening of aqueous high molecular organic matter after being crushed in temperature Low temperature drying below point temperature；
(8) absorption is made after being crushed under nitrogen protection in 700 DEG C of one step carbonization-activation 2h in the blocky extract after drying Agent.
Comparative example 1:
Water-based ink printing waste water is added into the sludge press filtration dehydration that PAC coagulation obtains, it is after dry that blocky extract is broken simultaneously Potassium hydroxide (mass ratio 1: 5) is added to be uniformly mixed, under nitrogen protection in 700 DEG C of one 2 h of step carbonization-activation, is made after being crushed Adsorbent.
Comparative example 2:
Water-based ink printing waste water is added after the sludge press filtration that PAC coagulation obtains is dehydrated, is dry that blocky extract is broken simultaneously Potassium hydroxide (mass ratio 1: 4) is added to be uniformly mixed, under nitrogen protection in 700 DEG C of one 2.5 h of step carbonization-activation, is made after broken Obtain adsorbent.
Adsorbent made from embodiment 1, embodiment 2, embodiment 3 and comparative example 1 and comparative example 2 is used for cation respectively For 24 hours, until adsorption equilibrium, filtering removes adsorbent to the adsorption bleaching of dye solution, passes through spectrophotometric determination decolorizing effect, knot Fruit is as shown in the table:
By decolorizing effect in table as it can be seen that dye solution for same concentrations, reach identical decolorizing effect, prepared by the present invention Adsorbent dosage is far below comparative example, about the 12% of comparative example dosage, and adsorption capacity is up to 450mg/g or more.The present invention Method substantially increases the adsorption capacity of adsorbent prepared by printing waste water extract.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, Any those skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its invent Design is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (5)

1. a kind of method that high-concentration waste water pollutant is extracted and utilized, which comprises the following steps:
(1) suitable cation exchange material is added into waste water, is stirred to react, and handing over for cation exchange material release is utilized The degree of ionization that ion inhibits the ionogen of water-soluble binder in waste water is changed, its solubility is reduced, destroys binder Stability makes extractable matter in waste water be condensed into insoluble tiny solid particle, while solia particle can be made through subsequent processing Ultimately form curable blocky extract；
(2) cation exchange material is isolated, is slowly added into waste water generate small gas with waste water reaction in right amount while stirring The chemical agent of bubble makes bubble stick the tiny solid particle in waste water, and gas, liquid, solid three-phase is formed between tiny solid particle Contact interface prevents the flocculation of tiny solid particle；
(3) it is simultaneously heated to temperature simultaneously with ultrasonication and is higher than water-soluble above 0-20 DEG C of softening point of binder, gradually make thin Small solia particle mutually coheres, and forms the bulky grain solid extract of internal package micro-bubble and water；
(4) ultrasonication and held for some time are kept, using binder macromolecular chain roll up and intermolecular force makes Bulky grain solid extract sufficiently coheres, and volume is constantly shunk, until forming the blocky extract of internal void prosperity, while protecting Keep hole between blocky extract internal particle uniform using ultrasonic wave and heat effect during temperature, keeps extract structure uniform；
(5) it is shunk sufficiently to blocky extract volume, stops ultrasonication, water is discharged；
(6) with saturation KOH solution that blocky extract surface fast cooling is cooling, make the quick-hardening of extract surface, reduction mentions Object surface viscosity is taken, and extract is made to fully absorb KOH；
(7) it takes out blocky extract to be fully cooled, extract is lower than to the softening of aqueous high molecular organic matter after being crushed in temperature Low temperature drying below point temperature；
(8) adsorbent is made after being crushed under nitrogen protection in 700 DEG C of one step charing, activation 1-4h in the extract after drying.
2. the method that a kind of high-concentration waste water pollutant according to claim 1 is extracted and utilized, which is characterized in that described Cation exchange material in step (1) is hydrogen form cation exchange material, need to be used in advance if sodium form cation exchange material Acid is handled.
3. the method that a kind of high-concentration waste water pollutant according to claim 1 is extracted and utilized, which is characterized in that described Chemical agent in step (2) is or mixtures thereof water soluble carbonate hydrogen salt or one kind of carbonate.
4. the method that a kind of high-concentration waste water pollutant according to claim 1 is extracted and utilized, which is characterized in that described Ultrasonic frequency in step (3) is greater than 20KHz.
5. the method that a kind of high-concentration waste water pollutant according to claim 1 is extracted and utilized, which is characterized in that described Saturation potassium hydroxide solution and extract volume ratio are 3-5:1 in step (6).
CN201811097307.2A 2018-09-20 2018-09-20 A kind of method that high-concentration waste water pollutant is extracted and utilized Pending CN109126705A (en)

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CN109603755A (en) * 2019-01-16 2019-04-12 青岛大学 A method of improving latex waste water extract resource utilization
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CN109938389A (en) * 2019-04-28 2019-06-28 河南卷烟工业烟草薄片有限公司 A kind of purification method that can remove tobacco extract small particles suspended matter
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