CN102247814A - Biomass adsorbent for treatment of heavy metal wastewater and treatment method of heavy metal wastewater - Google Patents
Biomass adsorbent for treatment of heavy metal wastewater and treatment method of heavy metal wastewater Download PDFInfo
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- CN102247814A CN102247814A CN201110127112XA CN201110127112A CN102247814A CN 102247814 A CN102247814 A CN 102247814A CN 201110127112X A CN201110127112X A CN 201110127112XA CN 201110127112 A CN201110127112 A CN 201110127112A CN 102247814 A CN102247814 A CN 102247814A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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Abstract
The invention discloses a biomass adsorbent for the treatment of heavy metal wastewater and a treatment method of the heavy metal wastewater. The biomass adsorbent is prepared through the following steps of: dehydrating and drying corchorus olitorius; and then grinding into powder. The treatment method of the heavy metal wastewater comprises the following steps of: pouring the biomass adsorbent into the heavy metal wastewater; and then oscillating the heavy metal wastewater. The biomass adsorbent disclosed by the invention has very high adsorption capacity on heavy metals contained in the wastewater; by treating the heavy metal wastewater by using the method, various heavy metals can be effectively removed, wherein the removal rate on cadmium, copper, lead, chromium, zinc, manganese, mercury, and the like can reach 95.0-99.9 percent, and the removal rate on nickel is more than 80 percent; and in addition, the heavy metals absorbed by the biomass adsorbent disclosed by the invention can be recovered through methods, such as an incineration smelting method or a chemical reduction method and the like, and therefore higher utilization value is created.
Description
Technical field
The present invention relates to a kind of adsorbent and process for treating heavy-metal waste water that is used for heavy metal containing wastewater treatment.
Background technology
At present, the countries in the world process for treating heavy-metal waste water mainly contains three classes: the first kind is the method that heavy metal ions in wastewater is removed by the generation chemical reaction, comprises neutralization precipitation method, sulphide precipitation, ferrite coprecipitation, chemical reduction method, electrochemical reducing and high molecular heavy metals trapping agent method etc.Second class is the method that makes the heavy metal in the waste water adsorb, concentrate, separate under the condition that does not change its chemical form, comprises that absorption, solvent extraction, evaporation and freezing method, ion-exchange and film separate etc.The 3rd class is to remove the method for heavy metal in the waste water by effects such as the flocculation of microorganism or plant, absorption, accumulation, enrichments, comprising bioflocculation, biochemical process and plant ecological reparation etc.And on producing, use at most and comparative maturity be to adopt iron oxide to carry out ion-exchange, add that artificial synthetic organic polymer flocculant (as polyacrylamide) flocculates, heavy metal ion can effectively be precipitated and reach removal effect.But this method because organic polymer is difficult to degraded, may cause secondary pollution to environment on the one hand, and this organic synthesis thing be non-renewable and cost higher.
Summary of the invention
The present invention aims to provide a kind of physical absorption that both had, and has capture of macromolecule electronics and flocculation simultaneously, can not produce secondary pollution and cost are lower, can regenerate biomass adsorbent that is used for heavy metal containing wastewater treatment and process for treating heavy-metal waste water.
This biomass adsorbent that is used for heavy metal containing wastewater treatment provided by the invention, this biomass adsorbent are dehydrated by corchorus olitorius and clay into power then and make.
The granule size of described powder is the 100-150 order.
The method that the present invention handles heavy metal wastewater thereby with above-mentioned biomass adsorbent is that described adsorbent is sprinkled in the heavy metal wastewater thereby, shakes heavy metal wastewater thereby then.
The above-mentioned concussion time is 20-40 minute.
Main Ingredients and Appearance in the biomass adsorbent of the present invention has: cellulose, lignin, extraordinary polysaccharide (mucus), pectin, tannin, protein, polyaminoacid etc., drop into biomass adsorbent of the present invention in the heavy metal wastewater thereby and during concussion, polysaccharide in the biomass adsorbent, tannin, cellulose, active function groups in the compositions such as lignin, as amino, carboxyl, hydroxyl etc., pass through ionic bond, hydrogen bond and Fan Dehuali adsorb the heavy metal ion in the waste water simultaneously and form a plurality of colloidal solids, between particle, produce " bridge formation " phenomenon, form a kind of netted three-dimensional structure and precipitate, thereby show very strong adsorption capacity, in this process, both had physical absorption, have capture of macromolecule electronics and flocculation again.Record this adsorbent by inventor's repetition test and can reach 95.0-99.9% the clearance of cadmium, copper, lead, chromium, zinc, manganese, mercury etc., to the clearance of nickel more than 80%, demonstrate fully adsorbent of the present invention heavy metal in the waste water is had very strong adsorption capacity, can efficiently remove the heavy metal in the waste water, adsorbent of the present invention in addition can not produce secondary pollution, and cost is lower.This adsorbent heavy metal can reclaim heavy metal through incinerating methods such as smelting or electronation, creates bigger value.
The specific embodiment
Embodiment one:
The biological yield height of corchorus olitorius, generally after the plantation regular period, plant height reaches about 30cm, begins to pluck the tender tip and blade, dehydrates, and when treating crop flowers all leaves and cane is gathered in the crops respectively, and leaf, stem dry respectively.
Pretreatment of raw material: tender tip cauline leaf must in time carry out the preliminary working preliminary treatment after plucking.Main flow process: pluck-dehydrate-preliminary grinding-storage.Cane is in the preceding results of blooming, the preliminary treatment of ripe cane: dehydrate-cane cuts off (5cm is long)-pulverizing-preliminary grinding-storage.
Adsorbent preparation: above-mentioned pretreated feedstock is finely ground to 100-150 order powder, obtains the cauline leaf powder respectively.
Because mucus amount is higher in the leaf powder, adsorption capacity is stronger, can prepare stem, the leaf powder of different proportion as required, and the proportioning of present embodiment cauline leaf powder is 3:1.
Heavy metal containing wastewater treatment: at 1 liter of cadmium (Cd
2+) concentration is to add the good adsorbent of above-mentioned outfit 5 grams in the water of 10mg/L, shake 30 minutes, centrifugation detection clear liquid cadmium concentration, the clearance of cadmium is 99.6%.
Embodiment two:
Pretreatment of raw material: must in time carry out the preliminary working preliminary treatment after tender tip cauline leaf is plucked by stages and in groups.Main flow process: pluck-dehydrate-preliminary grinding-storage.Cane is disposable results before blooming, the preliminary treatment of ripe cane: dehydrate-cane cut-out (5cm is long)-pulverizing-preliminary grinding-storage.
Sorbing material preparation: the above-mentioned mixing through pretreated feedstock 3:1 is finely ground to 100-150 order powder.
Heavy metal containing wastewater treatment: at 1 liter of lead (Pb
2+) concentration is to add above-mentioned fine grinding in the water of 10mg/L to 100-150 purpose adsorbent 5 grams, shake 30 minutes, centrifugation detection clear liquid cadmium concentration, plumbous clearance reaches 99.5%.
Embodiment three:
This is the experiment that an adsorbent that obtains with the preparation method of embodiment 2 carries out the heavy metal copper wastewater treatment.
Heavy metal containing wastewater treatment: at 1 liter of copper (Cu
2+) concentration is to add adsorbent 5 grams that embodiment 2 obtains in the water of 10mg/L, shake 30 minutes, centrifugation detection clear liquid cadmium concentration, copper removal rate reaches 98%.
Embodiment four:
This is that a preparation method with embodiment 1 obtains stem, leaf corase grind powder respectively, and the tailored version adsorbent of producing in cauline leaf 2:1 ratio carries out the experiment of heavy metal nickel wastewater treatment then
Heavy metal containing wastewater treatment: at 1 liter of nickel (Ni
2+) concentration is to add sorbing material 5 grams in the water of 10mg/L, shake 30 minutes, centrifugation detection clear liquid cadmium concentration, the nickel clearance is 80%.
Embodiment five:
Pretreatment of raw material: cane disposable results-full bar band leaf before blooming dehydrates-cane cut-out (5cm is long)-pulverizing-preliminary grinding-storage.
Adsorbent preparation: above-mentioned pretreated feedstock is finely ground to 100-150 order powder.
Heavy metal containing wastewater treatment: at 1 liter of zinc (Zn
2+) concentration is to add sorbing material 5 grams in the water of 10mg/L, shake 30 minutes, centrifugation detection clear liquid cadmium concentration, the zinc clearance is 92.5%.
Embodiment six:
Pretreatment of raw material: in time carry out the preliminary working preliminary treatment after tender tip cauline leaf is plucked in batches.Main flow process: pluck-dehydrate-preliminary grinding-storage.
Adsorbent preparation: above-mentioned pretreated feedstock is finely ground to 150 order left and right sides powder.
Heavy metal containing wastewater treatment: at 1 liter of cadmium (Cd
2+), plumbous (Pb
2+), copper (Cu
2+), nickel (Ni
2+), zinc (Zn
2+), concentration is respectively and adds sorbing material 10 grams in the composite waste of 10mg/L, shake centrifugation detection clear liquid cadmium concentration, cadmium (Cd 30 minutes
2+), plumbous (Pb
2+), copper (Cu
2+), nickel (Ni
2+), zinc (Zn
2+) clearance is respectively 99.8%, 99.6%, 99.2%, 82.5%, 98.0%.
Except above-mentioned experiment, the inventor also tests the waste water that contains chromium, manganese, mercury with adsorbent of the present invention, test by allocating different cauline leaf proportionings, the result shows that adsorbent of the present invention is strong especially to the adsorption capacity of heavy metal in the waste water, can effectively remove each heavy metal species in the waste water, wherein the clearance to cadmium, copper, lead, chromium, zinc, manganese, mercury etc. reaches 95.0-99.9%, to the clearance of nickel more than 80%.
Adsorbent of the present invention should be selected the kind of viscous pill content when selecting corchorus olitorius for use, the ability of the high more absorption heavy metal of the mucus amount of adsorbent is strong more.
Claims (4)
1. biomass adsorbent that is used for heavy metal containing wastewater treatment is characterized in that this adsorbent is clayed into power then by the corchorus olitorius dewatered drying to form.
2. according to the described biomass adsorbent that is used for heavy metal containing wastewater treatment of claim 1, the granule size that it is characterized in that described powder is the 100-150 order.
3. a method of heavy metal wastewater thereby being handled with claim 1 or 2 described biomass adsorbents is characterized in that described adsorbent is sprinkled in the heavy metal wastewater thereby, makes the heavy metal wastewater thereby concussion then.
4. according to the described method of claim 3, it is characterized in that the concussion time is 20-40 minute.
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| CN201110127112XA CN102247814A (en) | 2011-05-17 | 2011-05-17 | Biomass adsorbent for treatment of heavy metal wastewater and treatment method of heavy metal wastewater |
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| CN201110127112XA CN102247814A (en) | 2011-05-17 | 2011-05-17 | Biomass adsorbent for treatment of heavy metal wastewater and treatment method of heavy metal wastewater |
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| CN102934580A (en) * | 2012-11-21 | 2013-02-20 | 中国科学院亚热带农业生态研究所 | Planting method of jute in heavy-metal contaminated soil |
| CN103011464A (en) * | 2012-12-07 | 2013-04-03 | 常州大学 | Treatment method of stibium-containing wastewater |
| CN104558324A (en) * | 2014-12-25 | 2015-04-29 | 上海源育节能环保科技有限公司 | Resource recycling application of heavy metals in wastewater |
| CN105384298A (en) * | 2015-12-24 | 2016-03-09 | 苏州国昆裕重金属处理技术有限公司 | Efficient chemical nickel recovery system and method |
| CN105478085A (en) * | 2015-12-16 | 2016-04-13 | 湖南广播电视大学 | Preparation and application of adsorbent with jute as raw material |
| CN105498708A (en) * | 2015-12-16 | 2016-04-20 | 湖南广播电视大学 | Supercritical extraction method for jute polysaccharide and application of jute polysaccharide |
| CN105498711A (en) * | 2015-12-29 | 2016-04-20 | 淄博永辰环境影响评价有限公司 | Heavy metal ion adsorbent for livestock and poultry breeding wastewater, preparation method of heavy metal ion adsorbent and adsorption technology |
| CN105536712A (en) * | 2015-12-16 | 2016-05-04 | 湖南广播电视大学 | Ephedran prepared through steam explosion method and use thereof |
| CN105536713A (en) * | 2015-12-16 | 2016-05-04 | 湖南广播电视大学 | Modified Corchorus capsularis polysaccharide, preparation and application thereof |
| CN106277270A (en) * | 2016-10-13 | 2017-01-04 | 沈阳建筑大学 | A kind of method of hydrargyrum in Rhizoma Smilacis Glabrae deeply treating wastewater |
| CN106458646A (en) * | 2014-06-10 | 2017-02-22 | 迪睿合株式会社 | Water-purifying agent and water purification method |
| CN106423099A (en) * | 2016-10-18 | 2017-02-22 | 湖南大学 | Preparation method of jute/polymer gel and application of jute/polymer gel as heavy metal adsorbent |
| CN108043364A (en) * | 2017-12-19 | 2018-05-18 | 湖南广播电视大学 | A kind of preparation and application of novel porous flaxen fiber heavy metal absorbent |
| CN108947090A (en) * | 2018-08-13 | 2018-12-07 | 何立新 | A kind of processing system of industry lead waste water |
| CN108947141A (en) * | 2018-08-13 | 2018-12-07 | 何立新 | A kind of processing system of industry lead waste water |
| CN109317113A (en) * | 2018-12-14 | 2019-02-12 | 中国农业科学院麻类研究所 | A kind of gel micro-ball and preparation method thereof adsorbing heavy metal ions in wastewater |
| CN109675529A (en) * | 2019-01-15 | 2019-04-26 | 中国农业科学院麻类研究所 | Modified jute adsorbent of a kind of magnetic and preparation method thereof |
| CN109715261A (en) * | 2016-09-16 | 2019-05-03 | 迪睿合株式会社 | The extract and water scavengine agent of plant powder |
| CN110142029A (en) * | 2019-06-27 | 2019-08-20 | 中国农业科学院麻类研究所 | A kind of composite adsorption flocculant and preparation method thereof |
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Application publication date: 20111123 |