CN106345422A - 一种磁性纳米材料改性活性污泥吸附剂的制备方法 - Google Patents
一种磁性纳米材料改性活性污泥吸附剂的制备方法 Download PDFInfo
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- 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
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- 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
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0225—Compounds of Fe, Ru, Os, Co, Rh, Ir, Ni, Pd, Pt
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
- B01J2220/4887—Residues, wastes, e.g. garbage, municipal or industrial sludges, compost, animal manure; fly-ashes
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- 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
- C02F2101/20—Heavy metals or heavy metal compounds
Abstract
本发明提供一种磁性纳米材料改性活性污泥吸附剂的制备方法。本发明以活性污泥为原料,用制备好的纳米级Fe3O4磁化活性污泥。首次采用磁性活性污泥作为吸附剂的方法简单易行,成本低廉,吸附容量大,能有效处理水中重金属,实现了活性污泥的资源化利用,且易于磁分离,方便回收,吸附过程不造成二次污染。
Description
技术领域
本发明涉及一种磁性纳米材料改性活性污泥吸附剂的制备方法,属于吸附领域。
背景技术
随着工业的飞速发展和人们生活水平的日益提高,产生了越来越多的工业废水和生活污水,其处理面临严峻的挑战。其中,生物处理方法是当前应用最广泛的水处理技术,尤以活性污泥法应用最为普遍,但是存在污泥沉降分离能力低,单位容积的处理量小,污泥絮体结构松散,容易产生污泥膨胀等缺点。此外,污泥资源化再生利用也成为当前我国迫切需要解决的问题之一,因此探讨新的污泥资源化利用的新途径,对解决污水处理厂的污泥处置具有重要意义。
磁性污泥,作为一种新型功能材料,是以活性污泥为基体,负载某种磁性材料而得到的。其具有良好的吸附性能,处理废水能力高,又能通过磁选回收,改善沉降分离性能。
发明内容
本发明的目的是提供一种磁性纳米材料改性活性污泥吸附剂的制备方法。
本发明的技术方案如下:
1.一种磁性纳米材料改性活性污泥吸附剂的制备方法,其特征在于,包括以下步骤:
(1) 将污水处理厂取来的活性污泥在100~110℃下干燥,研磨,80~150目过筛,得到干污泥;
(2) 将7~10 g干污泥粉末溶于50~100 mL蒸馏水中,60~80℃水浴加热;
(3) 2~5 g FeCl3溶于150~300 mL蒸馏水中,60~80℃水浴加热,得到FeCl3溶液;
(4) 2~5 g FeSO4溶于20~40 mL蒸馏水中,60~80℃水浴加热,得到FeSO4溶液;
(5) 将FeCl3溶液和FeSO4溶液混合搅拌之后倒入搅拌的污泥中,三种溶液混合在60~80℃的水浴锅中搅拌25~45 min,用NaOH调整pH至10~11,然后继续搅拌50~70 min之后,在室温下静止,用去离子水洗涤,烘干,制得磁性活性污泥。
本发明的有益成果
首次将磁性纳米材料加载到活性污泥上,有效的提高了活性污泥的资源化利用,且易于磁分离,方便回收,吸附过程不造成二次污染。本发明的磁性污泥主要用于处理水中重金属。
附图说明
图1为未改性活性污泥的扫描电子显微镜(SEM)的微观形貌图(放大5000倍)。
图2为实施例3所制备的磁性纳米材料改性活性污泥的扫描电子显微镜(SEM)的微观形貌图(放大5000倍)。
图3为实施例3所制备的磁性纳米材料改性活性污泥的EDX能谱图。
实施例1一种磁性纳米材料改性活性污泥吸附剂的制备方法
(1) 将污水处理厂取来的活性污泥在102℃下干燥,研磨,80目过筛,得到干污泥;
(2)将7 g干污泥粉末溶于70 mL蒸馏水中,60℃水浴加热;
(3)2.5 g FeCl3溶于180 mL蒸馏水中,60℃水浴加热,得到FeCl3溶液;
(4)3 g FeSO4溶于22 mL蒸馏水中,60℃水浴加热,得到FeSO4溶液;
(5)将FeCl3溶液和FeSO4溶液混合搅拌之后倒入搅拌的污泥中,三种溶液混合在60℃的水浴锅中搅拌25 min,用NaOH调整pH至10,然后继续搅拌50 min之后,在室温下静止,用去离子水洗涤,烘干,制得磁性活性污泥。
实施例2 一种磁性纳米材料改性活性污泥吸附剂的制备方法
(1) 将污水处理厂取来的活性污泥在105℃下干燥,研磨,100目过筛,得到干污泥;
(2)将9 g干污泥粉末溶于90 mL蒸馏水中,70℃水浴加热;
(3)3 g FeCl3溶于216 mL蒸馏水中,70℃水浴加热,得到FeCl3溶液;
(4)3.6 g FeSO4溶于27 mL蒸馏水中,70℃水浴加热,得到FeSO4溶液;
(5)将FeCl3溶液和FeSO4溶液混合搅拌之后倒入搅拌的污泥中,三种溶液混合在70℃的水浴锅中搅拌30 min,用NaOH调整pH至10,然后继续搅拌60 min之后,在室温下静止,用去离子水洗涤,烘干,制得磁性活性污泥。
实施例3一种磁性纳米材料改性活性污泥吸附剂的制备方法
(1) 将污水处理厂取来的活性污泥在110℃下干燥,研磨,150目过筛,得到干污泥;
(2)将10 g干污泥粉末溶于100 mL蒸馏水中,80℃水浴加热;
(3)3.6 g FeCl3溶于260 mL蒸馏水中,80℃水浴加热,得到FeCl3溶液;
(4)4 g FeSO4溶于30 mL蒸馏水中,80℃水浴加热,得到FeSO4溶液;
(5)将FeCl3溶液和FeSO4溶液混合搅拌之后倒入搅拌的污泥中,三种溶液混合在80℃的水浴锅中搅拌45 min,用NaOH调整pH至10,然后继续搅拌70 min之后,在室温下静止,用去离子水洗涤,烘干,制得磁性活性污泥。
施例4 磁性纳米材料中Fe的重量百分比为:20%~30%。
Claims (2)
1.一种磁性纳米材料改性活性污泥吸附剂的制备方法,其特征在于,包括以下步骤:
(1) 将污水处理厂取来的活性污泥在100~110℃下干燥,研磨,80~150目过筛,得到干污泥;
(2) 将7~10 g干污泥粉末加入到50~100 mL蒸馏水中,60~80℃水浴加热;
(3) 将2~5 g FeCl3溶于150~300 mL蒸馏水中,60~80℃水浴加热,得到FeCl3溶液;
(4) 将2~5 g FeSO4溶于20~40 mL蒸馏水中,60~80℃水浴加热,得到FeSO4溶液;
(5) 将得到的FeCl3溶液和FeSO4溶液混合搅拌之后倒入搅拌的污泥中,混合均匀后在60~80℃的水浴锅中搅拌25~45 min,用NaOH调整pH至10~11,然后继续搅拌50~70 min之后,在室温下静止,用去离子水洗涤,烘干,制得磁性活性污泥。
2.如权利要求1所述的一种磁性纳米材料改性活性污泥吸附剂的制备方法,其特征在于磁性纳米材料中Fe的重量百分比为:20%~30%。
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Cited By (3)
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CN106825011A (zh) * | 2017-02-14 | 2017-06-13 | 榆林学院 | 一种土壤重金属Pb的去除方法 |
CN112427019A (zh) * | 2020-08-11 | 2021-03-02 | 广西大学 | 一种厌氧颗粒污泥负载硫化纳米零价铁吸附材料及其制备方法和应用 |
CN113680324A (zh) * | 2021-07-20 | 2021-11-23 | 山西大同大学 | 一种氧化石墨烯-磁性纳米粒子-污泥复合吸附剂及其制备方法和应用 |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106825011A (zh) * | 2017-02-14 | 2017-06-13 | 榆林学院 | 一种土壤重金属Pb的去除方法 |
CN106825011B (zh) * | 2017-02-14 | 2020-04-10 | 榆林学院 | 一种土壤重金属Pb的去除方法 |
CN112427019A (zh) * | 2020-08-11 | 2021-03-02 | 广西大学 | 一种厌氧颗粒污泥负载硫化纳米零价铁吸附材料及其制备方法和应用 |
CN113680324A (zh) * | 2021-07-20 | 2021-11-23 | 山西大同大学 | 一种氧化石墨烯-磁性纳米粒子-污泥复合吸附剂及其制备方法和应用 |
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