CN110433767A - 一种陶质除磷颗粒滤料及其制备方法 - Google Patents

一种陶质除磷颗粒滤料及其制备方法 Download PDF

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CN110433767A
CN110433767A CN201910818158.2A CN201910818158A CN110433767A CN 110433767 A CN110433767 A CN 110433767A CN 201910818158 A CN201910818158 A CN 201910818158A CN 110433767 A CN110433767 A CN 110433767A
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parts
filter material
ceramic
granule filter
green body
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汪智杰
杨伟煜
王光荣
严传洪
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Hangzhou Qinlin Ecological Technology Co Ltd
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Abstract

本发明公开了一种陶质除磷颗粒滤料及其制备方法,属于颗粒滤料制备技术领域,一种陶质除磷颗粒滤料,其各组分的质量份数配比为:黏土60‑70份,化学污泥5‑10份,粉煤灰5‑10份,磁铁矿粉10‑15份,水5‑10份。陶质除磷颗粒滤料的制备方法,包括如下步骤:S1:分别称取60‑70份黏土、5‑10份化学污泥、5‑10份粉煤灰、以及10‑15份磁铁矿粉,并加入5‑10份水进行混合搅匀,S2:将搅匀的混合料送入坯模压实塑形,S3:取出塑形后的坯体,自然风干,S4:将风干后坯体放入窑中烧结,S5:取出烧结形成的坯体,对坯体进行破碎,形成具有不规则表面的颗粒滤料,并进行筛分。本发明制备方法制成的陶质除磷颗粒滤料具有不规则表面,比表面积大,除磷效果好。

Description

一种陶质除磷颗粒滤料及其制备方法
技术领域
本发明属于颗粒滤料制备技术领域,尤其涉及一种陶质除磷颗粒滤料及其制备方法。
背景技术
水体中磷的去除主要有化学除磷、生物除磷和吸附除磷几种方式,其中吸附除磷是利用吸附剂提供的大比表面积、通过磷在吸附剂表面的附着吸附、离子交换或表面沉淀的过程,实现磷的分离。常见的除磷滤料包括天然材料、工业废渣、以及改性材料等。但是上述滤料的吸附量有限。
随着科技的发展和人们研究的深入,陶质滤料在污水处理中的应用得到重视。为了增加陶质滤料的吸附能力,在制备陶质滤料时会采用各种方法进行加工,但是目前达到的效果仍然达不到人们的预期。
滤料的比表面积越大,处理效果更好,现有的陶质除磷颗粒滤料通常为球状颗粒,比表面积小,吸附量少,且除磷效果不理想。
发明内容
为了克服现有技术的缺陷,本发明所要解决的技术问题在于提出一种陶质除磷颗粒滤料及其制备方法,颗粒滤料具有不规则表面,比表面积大,除磷效果好。
为达此目的,本发明采用以下技术方案:
本发明提供的一种陶质除磷颗粒滤料,其各组分的质量份数配比为:黏土60-70份,化学污泥5-10份,粉煤灰5-10份,磁铁矿粉10-15份,水5-10份,化学污泥为污水厂的化学污泥,它含有除磷盐类(铁铝盐),不但废物回用,而且增加有效除磷成分。
优选地,陶质除磷颗粒滤料的粒径为5mm-13mm。
本发明还提供如上述的陶质除磷颗粒滤料的制备方法,包括如下步骤:S1:分别称取60-70份黏土、5-10份化学污泥、5-10份粉煤灰、以及10-15份磁铁矿粉,并加入5-10份水进行混合搅匀,S2:将搅匀的混合料送入坯模压实塑形,S3:取出塑形后的坯体,自然风干,S4:将风干后坯体放入窑中烧结,S5:取出烧结形成的坯体,坯体具有大量细小气孔,一部分细小气孔暴露在坯体外部,另一部分细小气孔位于坯体内部,坯体具有大量细小气孔,对坯体进行破碎,形成具有不规则表面的颗粒滤料,并进行筛分。
优选地,步骤S4中,烧结的升温速率为2-4℃/min。
优选地,步骤S4中,当窑中温度升温至1000-1100℃后,维持当前温度继续烧结6-8h,然后降至室温。
优选地,步骤S5中,筛分的粒径为5mm-13mm。
优选地,步骤S5中,采用颚式破碎机对坯体进行破碎,将大量位于坯体内部的封闭的细小气孔暴露在外。
优选地,细小气孔的孔径为0.08-0.5mm。
本发明的有益效果为:
1、利用化学污泥作为原料,变废为宝,并结合粉煤灰和磁铁矿粉,通过合理控制各组分的配比,制成的颗粒滤料具有良好的除磷效果。
2、在烧结完毕后进行破碎处理,形成具有不规则表面的颗粒滤料,同时将大量封闭在坯体内的细小气孔暴露在外,大大提高比表面积,提高吸附量,进而提高除磷处理效果。
3、采用的原料成本低,制备成本低,具有良好的经济效益。
具体实施方式
现通过具体实施方式对本发明进一步说明。
实施例一:
本实施例中提供的一种陶质除磷颗粒滤料,其各组分的质量份数配比为:黏土60份,化学污泥6份,粉煤灰6份,磁铁矿粉10份,水7份,制成的陶质除磷颗粒滤料的粒径为5mm。
本实施例还提供如上述的陶质除磷颗粒滤料的制备方法,包括如下步骤:
S1:分别称取60份黏土、6份化学污泥、6份粉煤灰、以及10份磁铁矿粉,并加入7份水进行混合搅匀;
S2:将搅匀的混合料送入坯模压实塑形;
S3:取出塑形后的坯体,自然风干;
S4:将风干后坯体放入窑中烧结,以2℃/min的速率进行升温,当窑中温度升温至1000℃后,维持当前温度继续烧结6h,然后降至室温;
S5:取出烧结形成的坯体,坯体具有大量细小气孔,细小气孔的孔径为0.1mm,采用颚式破碎机对坯体进行破碎,形成具有不规则表面的颗粒滤料,将大量位于坯体内部的封闭的细小气孔暴露在外,并进行筛分,筛分的粒径为5mm,形成的颗粒滤料的孔隙率为47%,比表面积为1250m2/g,除磷率为82.2%。
实施例二:
本实施例中提供的一种陶质除磷颗粒滤料,其各组分的质量份数配比为:黏土63份,化学污泥7,粉煤灰7份,磁铁矿粉12份,水8份,制成的陶质除磷颗粒滤料的粒径为6mm。
本实施例还提供如上述的陶质除磷颗粒滤料的制备方法,包括如下步骤:
S1:分别称取63份黏土、7份化学污泥、7份粉煤灰、以及12份磁铁矿粉,并加入8份水进行混合搅匀;
S2:将搅匀的混合料送入坯模压实塑形;
S3:取出塑形后的坯体,自然风干;
S4:将风干后坯体放入窑中烧结,以3℃/min的速率进行升温,当窑中温度升温至1050℃后,维持当前温度继续烧结7h,然后降至室温;
S5:取出烧结形成的坯体,坯体具有大量细小气孔,细小气孔的孔径为0.18mm,采用颚式破碎机对坯体进行破碎,形成具有不规则表面的颗粒滤料,将大量位于坯体内部的封闭的细小气孔暴露在外,并进行筛分,筛分的粒径为6mm,形成的颗粒滤料的孔隙率为45%,比表面积为1100m2/g,除磷率为77.4%。
实施例三:
本实施例中提供的一种陶质除磷颗粒滤料,其各组分的质量份数配比为:黏土68份,化学污泥9,粉煤灰9份,磁铁矿粉14份,水9份,制成的陶质除磷颗粒滤料的粒径为10mm。
本实施例还提供如上述的陶质除磷颗粒滤料的制备方法,包括如下步骤:
S1:分别称取68份黏土、9份化学污泥、9份粉煤灰、以及14份磁铁矿粉,并加入9份水进行混合搅匀;
S2:将搅匀的混合料送入坯模压实塑形;
S3:取出塑形后的坯体,自然风干;
S4:将风干后坯体放入窑中烧结,以4℃/min的速率进行升温,当窑中温度升温至1100℃后,维持当前温度继续烧结8h,然后降至室温;
S5:取出烧结形成的坯体,坯体具有大量细小气孔,细小气孔的孔径为0.25mm,采用颚式破碎机对坯体进行破碎,形成具有不规则表面的颗粒滤料,将大量位于坯体内部的封闭的细小气孔暴露在外,并进行筛分,筛分的粒径为10mm,形成的颗粒滤料的孔隙率为42%,比表面积为1000m2/g,除磷率为74.1%。
本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术;以上实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解;其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (8)

1.一种陶质除磷颗粒滤料,其特征在于:
其各组分的质量份数配比为:
黏土60-70份;
化学污泥5-10份;
粉煤灰5-10份;
磁铁矿粉10-15份;
水5-10份。
2.根据权利要求1所述的陶质除磷颗粒滤料,其特征在于:
所述陶质除磷颗粒滤料的粒径为5mm-13mm。
3.如权利要求2所述的陶质除磷颗粒滤料的制备方法,其特征在于,包括如下步骤:
S1:分别称取60-70份黏土、5-10份化学污泥、5-10份粉煤灰、以及10-15份磁铁矿粉,并加入5-10份水进行混合搅匀;
S2:将搅匀的混合料送入坯模压实塑形;
S3:取出塑形后的坯体,自然风干;
S4:将风干后坯体放入窑中烧结;
S5:取出烧结形成的坯体,坯体具有大量细小气孔,对坯体进行破碎,形成具有不规则表面的颗粒滤料,并进行筛分。
4.根据权利要求3所述的陶质除磷颗粒滤料的制备方法,其特征在于:
所述步骤S4中,烧结的升温速率为2-4℃/min。
5.根据权利要求3所述的陶质除磷颗粒滤料的制备方法,其特征在于:
所述步骤S4中,当窑中温度升温至1000-1100℃后,维持当前温度继续烧结6-8h,然后降至室温。
6.根据权利要求3所述的陶质除磷颗粒滤料的制备方法,其特征在于:
所述步骤S5中,筛分的粒径为5mm-13mm。
7.根据权利要求3所述的陶质除磷颗粒滤料的制备方法,其特征在于:
所述步骤S5中,采用颚式破碎机对坯体进行破碎,将大量位于坯体内部的封闭的细小气孔暴露在外。
8.根据权利要求3所述的陶质除磷颗粒滤料的制备方法,其特征在于:
细小气孔的孔径为0.08-0.5mm。
CN201910818158.2A 2019-08-30 2019-08-30 一种陶质除磷颗粒滤料及其制备方法 Pending CN110433767A (zh)

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