CN104437389A - Preparation method and application of adsorbent for treating lead-containing waste water - Google Patents

Preparation method and application of adsorbent for treating lead-containing waste water Download PDF

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Publication number
CN104437389A
CN104437389A CN201410690083.1A CN201410690083A CN104437389A CN 104437389 A CN104437389 A CN 104437389A CN 201410690083 A CN201410690083 A CN 201410690083A CN 104437389 A CN104437389 A CN 104437389A
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adsorbent
lead
waste water
ardealite
preparation
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CN104437389B (en
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宁平
杨月红
石磊
程杨
张怀予
于珊珊
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Kunming University of Science and Technology
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Kunming University of Science and Technology
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/22Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
    • B01J20/223Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material containing metals, e.g. organo-metallic compounds, coordination complexes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/30Processes for preparing, regenerating, or reactivating
    • B01J20/3085Chemical treatments not covered by groups B01J20/3007 - B01J20/3078
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/285Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/58Treatment of water, waste water, or sewage by removing specified dissolved compounds
    • C02F1/62Heavy metal compounds

Abstract

The invention relates to a preparation method and application of an adsorbent for treating lead-containing waste water, and belongs to the technical field of heavy metal wastewater treatment. The preparation method comprises the following steps: performing pretreatment on phosphogypsum, modifying phosphogypsum by adopting a sodium dodecyl benzene sulfonate modification technology, and performing ultrasonic treatment. The adsorbent prepared by the method can realize chemical complexation reaction with heavy metal lead ions in waste water, so as to remove the heavy metal lead ions. Phosphogypsum has a large specific surface area, and the treated phosphogypsum subjected to further improvement of the method has a relatively high adsorption capacity, so that the adsorbent becomes an excellent adsorbing material for removing lead ions. The adsorbent prepared by the invention is good in stability and high in adsorption capacity, and treated lead-containing waste water can reach discharge requirements on lead of national Integrated Wastewater Discharge Standard (GB8978-1996).

Description

A kind of preparation method and application processing lead waste water adsorbent
Technical field
The present invention relates to a kind of preparation method and the application that process lead waste water adsorbent, belong to technical field of heavy metal wastewater treatment.
Background technology
In ecological water body environment, the main source of lead waste water is the sedimentation of leaded particle in water body in the industrial wastewater of the industry discharges such as plating, smelting, casting, agricultural chemicals, mining, dyestuff, oil, battery, machinery, printing and air.Battery industry is the main source of lead waste water, it is reported, often producing 1 battery and just cause plumbous loss to be 4.54 ~ 6810mg, is secondly that petroleum industry produces gasoline additive.Lead belongs to first kind water pollutant, and by national regulation, the total lead content of lead waste water must reach first kind pollutant maximum permissible concentration discharge standard at workshop floss hole, i.e. 1mg/L.Make a general survey of the treatment technology of lead waste water both at home and abroad at present, apply more, mainly contain compared with the technique of mature and reliable: chemical precipitation method, ion-exchange, electrolysis, absorption method, bioanalysis, membrane separation process etc.But the shortcomings such as these method ubiquity treatment effects are bad, cost is high.Therefore, find a kind of way of fine solution lead contamination, for the maintenance of good ecological environment, the urban ecological environment that especially industry is flourishing is very important.
Ardealite is the solid waste produced in Wet-process phosphoric acid (WPPA) technical process, and its main component is CaSO 42H 2o, in May, 2006, State Environmental Protection Administration was with ring letter (2006) No. 176 civilian forms, by qualitative for ardealite be dangerous solid waste, be classified as the controlling object of national noxious waste pollution environment.Therefore the harmless treatment of ardealite and comprehensive utilization become one of focus of Resource Recovery of Industrial Solid Waste research field.
The recycling of ardealite has become the key that phosphate fertilizer industry realizes sustainable development.Therefore, how to fully utilize ardealite, control pollution that ardealite produces, the treatment of wastes with processes of wastes against one another, improve the value of ardealite, create good social benefit and environmental benefit and just seem and be even more important.Ardealite may be used for processing lead waste water in utilization, it is a kind of method of the treatment of wastes with processes of wastes against one another, but the ardealite adsorption capacity of non-modified and specific area on the low side, be directly used for processing lead waste water and can not reach emission request (<1mg/L) to lead in country " integrated wastewater discharge standard " (GB8978-1996).
It is the processing method disclosing a kind of lead waste water in the patent of CN1854094A at publication number.The method utilizes the method process lead waste water of electrodialysis and ion-exchange.Its processing step for described lead waste water is entered electrodialysis plant after precipitation process, at pH value 6 ~ 9, deep or light water ratio 1:2 ~ 5, operating current 2 ~ 6A/cm 2, circular treatment 2 ~ 6 times under waste water flow velocity 100 ~ 300L/h condition, the fresh water after electrodialysis enters ion exchange column with 50 ~ 200I/h flow velocity again, obtains treated water.But there is following shortcoming in the method: (1) needs the sewage treatment facility of supporting response, adds processing cost; (2) waste water after process only reaches reuse standard, does not reach outer row's standard.
Be in the patent of CN1854094A, disclose a kind of processing method utilizing mushroom culture medium waste to remove lead-containing industrial wastewater at publication number.The method utilizes the method process lead waste water of mushroom culture medium waste.Its processing step, for using wood chip, rice bran, gypsum and lime, mixes with water the mushroom culture medium made, and through indoor temperature control product mushroom process in 2 ~ October, mushroom culture medium fully becomes thoroughly decomposed; After it can not produce mushroom, by culture medium high temp fire bacterium and pulverization process, make mushroom culture medium waste biological adsorption agent; Consumption is 1 ~ 2kg/m 3biological adsorption agent join in lead waste water, adjust ph, under the condition of temperature 20 ~ 30 DEG C, utilizes compressed air stirring and adsorbing, filtering adsorbent after 24 ~ 48 hours.But there is following shortcoming in the method: (1), when quantity of sorbent consumption is large, raw material not easily obtains; (2) waste material after process is comparatively difficult in desorb.
Foreign study proves, the ardealite not carrying out modification has certain characterization of adsorption, has good absorption property under appropriate conditions to lead.Ardealite simultaneously after absorption can utilize again as building materials after super-dry process, thus achieves the process of ardealite comprehensive utilization of resources.But there is no the report research utilizing neopelex to combine obtained material modified sorbent treatment lead accumulator (leaded) waste water of ardealite at present both at home and abroad.
Summary of the invention
The object of the present invention is to provide a kind of preparation method processing lead waste water adsorbent, specifically comprise the following steps:
(1) remove impurity, decompress filter after being washed by ardealite, after then temperature being risen to 160 DEG C by the heating rate of rising 5-10 per hour DEG C, insulation 14 ~ 18h, obtains pretreated ardealite sample;
(2) neopelex is added in ethanol by the ratio being 1:3 ~ 1:5 in neopelex and ethanol mass ratio, under 20 ~ 28 DEG C of environment, stirs 0.2 ~ 1.2h, is mixed with organically-modified solution;
(3) in the ratio of 6 ~ 12g/30mL pretreated ardealite sample added in the organically-modified solution obtained in step (2) and be configured as half-dried reaction mass, be placed in flat bottom glass vessel, evenly spread out, leave standstill 20min-60min, then ultrasound reactor is put into, take out sample after reaction 25-35min, cross 120 ~ 180 mesh sieves after grinding, obtain adsorbent.
Process lead waste water adsorbent of the present invention is for the treatment of lead waste water: by adsorbent with dosage for 6 ~ 12g/L, the concentration of Pb In Exhausted Water ion is 40 ~ 60mg/L, treatment temperature is 20 ~ 28 DEG C, pH=7 ~ 8, mix and stir, filter after contact 50 ~ 90min, and measure the content of lead ion in the filtrate after process.
Neopelex of the present invention and ethanol be analyze pure.
Neopelex of the present invention is anion surfactant, forms modified composite material with ardealite, can react, thus realize the removal of heavy metal lead ion with the heavy metal lead ion generation chemical complexing in waste water; Ardealite itself has larger specific area, and by this method of modifying, the ardealite after can making process further has higher adsorption capacity, enables to become a kind of good adsorbent material removing lead ion.
Compared with prior art, the invention has the advantages that:
(1) the present invention utilizes neopelex modified ardealite, increases the adsorption capacity of ardealite, makes it have better adsorption function;
(2) obtained sorbing material directly joins in lead waste water by the present invention, and whole technique does not need extra power source, tubing, and whole course of reaction is carried out under 20 ~ 28 DEG C of conditions, and thus operating condition simply, is easily implemented, and engineering cost is low;
(3) the present invention can realize the removal to Pb In Exhausted Water, and overall adsorption amount is higher, under best theoretical condition, this novel absorption material can reach 42.8mg/g to the adsorbance of lead, thus has important practical significance to the improvement of lead-containing industrial wastewater and the improvement of water environment;
(4) the present invention provides foundation for realizing ardealite comprehensive utilization industrialization, and is conducive to the Automated condtrol of waste water treatment process and implementation process and the raising of mechanization degree.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the present invention is described in further detail, but protection scope of the present invention is not limited to described content.
Embodiment 1
(1) utilize distilled water that ardealite is fully washed removing impurity, after decompress filter, sample is placed in box Muffle furnace, adopt the mode (rising per hour 5 DEG C of temperature programming, until 160 DEG C time stop heat up) carry out heating 14h, 120 mesh sieves crossed by grinding ardealite, obtain pretreated ardealite sample;
(2) 4g neopelex is dissolved in 12g ethanol, at 20 DEG C, stirs 0.2h, obtain organically-modified solution;
(3) pretreated for 6g ardealite is added in the organically-modified solution obtained in 30mL step (2) and is configured as half-dried reaction mass, be placed in flat bottom glass vessel, evenly spread out, leave standstill 20min, ready half dry reactants is put into ultrasound reactor, reaction time 25min, in this course of reaction, ethanolic solution evaporates minimizing gradually, sample progressively becomes dry, take out sample, cross 120 mesh sieves after grinding, obtain adsorbent.
(4) by adsorbent with dosage be 6g/L, the concentration of Pb In Exhausted Water ion is 40mg/L, and treatment temperature is 20 DEG C, and pH=7 mixes and stirs, and contact after 50 minutes and filter, in the filtrate after process, the content of lead ion is 0.9mg/L.
Embodiment 2
(1) utilize distilled water that ardealite is fully washed removing impurity, after decompress filter, sample is placed in box Muffle furnace, adopt the mode (rising per hour 8 DEG C of temperature programming, until 160 DEG C time stop heat up) carry out heating 16h, 160 mesh sieves crossed by grinding ardealite, obtain pretreated ardealite sample;
(2) 4g neopelex is dissolved in 16g ethanol, at 25 DEG C, stirs 0.6h, obtain organically-modified solution;
(3) pretreated for 8g ardealite is added in the organically-modified solution obtained in 30mL step (2) and is configured as half-dried reaction mass, be placed in flat bottom glass vessel, evenly spread out, leave standstill 40min, ready half dry reactants is put into ultrasound reactor, reaction time 30min, in this course of reaction, ethanolic solution evaporates minimizing gradually, sample progressively becomes dry, take out sample, cross 160 mesh sieves after grinding, obtain adsorbent.
(4) by adsorbent with dosage be 8g/L, the concentration of Pb In Exhausted Water ion is 50mg/L, and treatment temperature is 25 DEG C, and pH=7 mixes and stirs, and contact after 60 minutes and filter, in the filtrate after process, the content of lead ion is 0.7mg/L.
Embodiment 3
(1) utilize distilled water that ardealite is fully washed removing impurity, after decompress filter, sample is placed in box Muffle furnace, adopt the mode (rising per hour 10 DEG C of temperature programming, until 160 DEG C time stop heat up) carry out heating 18h, 180 mesh sieves crossed by grinding ardealite, obtain pretreated ardealite sample;
(2) 4g neopelex is dissolved in 20g ethanol, at 28 DEG C, stirs 1.2h, obtain organically-modified solution;
(3) pretreated for 12g ardealite is added in the organically-modified solution obtained in 30mL step (2) and is configured as half-dried reaction mass, be placed in flat bottom glass vessel, evenly spread out, leave standstill 60min, ready half dry reactants is put into ultrasound reactor, reaction time 35min, in this course of reaction, ethanolic solution evaporates minimizing gradually, sample progressively becomes dry, take out sample, cross 180 mesh sieves after grinding, obtain adsorbent.
(4) by adsorbent with dosage be 12g/L, the concentration of Pb In Exhausted Water ion is 60mg/L, and treatment temperature is 28 DEG C, and pH=8 mixes and stirs, and contact after 90 minutes and filter, in the filtrate after process, the content of lead ion is 0.4mg/L.
Comparative example 1
(1) utilize distilled water that ardealite is fully washed removing impurity, after decompress filter, sample is placed in box Muffle furnace, adopt the mode (rising per hour 5 DEG C of temperature programming, until 160 DEG C time stop heat up) carry out heating 14h, 120 mesh sieves crossed by grinding ardealite, obtain pretreated ardealite sample;
(2) be 6g/L by ardealite in step (1) with dosage, the concentration of Pb In Exhausted Water ion is 40mg/L, and treatment temperature is 20 DEG C, and pH=7 mix and stirs, and contact filtration after 50 minutes, in the filtrate after process, the content of lead ion is 20.4mg/L.
Comparative example 2
(1) utilize distilled water that ardealite is fully washed removing impurity, after decompress filter, sample is placed in box Muffle furnace, adopt the mode (rising per hour 8 DEG C of temperature programming, until 160 DEG C time stop heat up) carry out heating 16h, 160 mesh sieves crossed by grinding ardealite, obtain pretreated ardealite sample;
(2) be 8g/L by ardealite in step (1) with dosage, the concentration of Pb In Exhausted Water ion is 50mg/L, and treatment temperature is 25 DEG C, and pH=7 mix and stirs, and contact filtration after 60 minutes, in the filtrate after process, the content of lead ion is 23.8mg/L.
Comparative example 3
(1) utilize distilled water that ardealite is fully washed removing impurity, after decompress filter, sample is placed in box Muffle furnace, adopt the mode (rising per hour 10 DEG C of temperature programming, until 160 DEG C time stop heat up) carry out heating 18h, 180 mesh sieves crossed by grinding ardealite, obtain pretreated ardealite sample;
(2) be 12g/L by ardealite in step (1) with dosage, the concentration of Pb In Exhausted Water ion is 60mg/L, and treatment temperature is 28 DEG C, and pH=8 mix and stirs, and contact filtration after 90 minutes, in the filtrate after process, the content of lead ion is 25.1mg/L.

Claims (2)

1. process a preparation method for lead waste water adsorbent, it is characterized in that, specifically comprise the following steps:
(1) remove impurity, decompress filter after being washed by ardealite, after then temperature being risen to 160 DEG C by the heating rate of rising 5-10 per hour DEG C, insulation 14 ~ 18h, obtains pretreated ardealite sample;
(2) neopelex is added in ethanol by the ratio being 1:3 ~ 1:5 in neopelex and ethanol mass ratio, under 20 ~ 28 DEG C of environment, stirs 0.2 ~ 1.2h, is mixed with organically-modified solution;
(3) in the ratio of 6 ~ 12g/30mL pretreated ardealite sample added in (2) in the organically-modified solution obtained and be configured as half-dried reaction mass, be placed in flat bottom glass vessel, evenly spread out, leave standstill 20min-60min, then ultrasound reactor is put into, take out sample after reaction 25-35min, cross 120 ~ 180 mesh sieves after grinding, obtain adsorbent.
2. the adsorbent that the preparation method processing lead waste water adsorbent described in claim 1 prepares is for the treatment of lead waste water, it is characterized in that: by adsorbent with dosage for 6 ~ 12g/L, the concentration of Pb In Exhausted Water ion is 40 ~ 60mg/L, treatment temperature is 20 ~ 28 DEG C, pH=7 ~ 8, mix and stir, filtering after contact 50 ~ 90min, and measure the content of lead ion in the filtrate after process.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105146721A (en) * 2015-08-28 2015-12-16 安徽中烟工业有限责任公司 Method for selectively reducing content of Pb in paper-making method reconstituted tobacco extract liquor
CN105170119A (en) * 2015-09-30 2015-12-23 太仓碧奇新材料研发有限公司 Preparation method of typha gypsum powder composite material for enriching iridium ions in tailing wastewater
CN106552585A (en) * 2016-12-02 2017-04-05 郑州源冉生物技术有限公司 Heavy metal lead ion adsorbent prepared by a kind of utilization Cortex Ailanthi and preparation method thereof
CN106732354A (en) * 2016-12-02 2017-05-31 郑州源冉生物技术有限公司 A kind of heavy metal lead ion adsorbent and preparation method thereof
CN107271574A (en) * 2017-05-25 2017-10-20 安徽宏远职业卫生技术服务有限公司 A kind of water quality detection agent for being used to detect lead element in water
CN109734118A (en) * 2018-08-15 2019-05-10 长沙湘朴科技有限公司 A kind of Phosphogypsum-modifymethod method for beneficiation wastewater processing

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CN101537342A (en) * 2009-03-23 2009-09-23 浙江大学 Chemical modification method for preparing residual activated sludge to absorbent
CN102755877A (en) * 2012-08-01 2012-10-31 合肥工业大学 Composite adsorbing material for adsorbing arsenic in water and preparation method thereof
CN103331145A (en) * 2013-07-08 2013-10-02 湖北富邦科技股份有限公司 Preparation method of heavy metal ion absorbent from phosphogypsum
CN104069803A (en) * 2014-07-28 2014-10-01 武汉科技大学 Organic modified granular bentonite/attapulgite absorbent and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101537342A (en) * 2009-03-23 2009-09-23 浙江大学 Chemical modification method for preparing residual activated sludge to absorbent
CN102755877A (en) * 2012-08-01 2012-10-31 合肥工业大学 Composite adsorbing material for adsorbing arsenic in water and preparation method thereof
CN103331145A (en) * 2013-07-08 2013-10-02 湖北富邦科技股份有限公司 Preparation method of heavy metal ion absorbent from phosphogypsum
CN104069803A (en) * 2014-07-28 2014-10-01 武汉科技大学 Organic modified granular bentonite/attapulgite absorbent and preparation method thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105146721A (en) * 2015-08-28 2015-12-16 安徽中烟工业有限责任公司 Method for selectively reducing content of Pb in paper-making method reconstituted tobacco extract liquor
CN105170119A (en) * 2015-09-30 2015-12-23 太仓碧奇新材料研发有限公司 Preparation method of typha gypsum powder composite material for enriching iridium ions in tailing wastewater
CN106552585A (en) * 2016-12-02 2017-04-05 郑州源冉生物技术有限公司 Heavy metal lead ion adsorbent prepared by a kind of utilization Cortex Ailanthi and preparation method thereof
CN106732354A (en) * 2016-12-02 2017-05-31 郑州源冉生物技术有限公司 A kind of heavy metal lead ion adsorbent and preparation method thereof
CN107271574A (en) * 2017-05-25 2017-10-20 安徽宏远职业卫生技术服务有限公司 A kind of water quality detection agent for being used to detect lead element in water
CN109734118A (en) * 2018-08-15 2019-05-10 长沙湘朴科技有限公司 A kind of Phosphogypsum-modifymethod method for beneficiation wastewater processing

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