CN111514864A - 一种有机污染废水处理剂及其制备方法和使用方法 - Google Patents
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Abstract
本发明公开了一种有机污染废水处理剂及其制备方法和使用方法,属于污水处理技术领域,包括以下步骤:将炉渣、麦糠、粉煤灰和水混合,制得浆料;对浆料进行养护;将养护后的浆料在600~900℃进行烧结,自然冷却至室温,粉碎,制得骨架材料;将骨架材料浸入硫酸铝和阴离子型聚丙烯酰胺制成的水溶液中进行负载,过滤、干燥,制得有机污染废水处理剂;本发明制备多孔载体的原料为炉渣、粉煤灰和麦糠,均是工农业生产废弃物,来源广泛,成本低,且通过负载硫酸铝和阴离子型聚丙烯酰胺,吸附和絮凝相结合,协同提高废水处理效果,处理过程操作简单,具有应用前景。
Description
技术领域
本发明属于污水处理技术领域,具体涉及一种有机污染废水处理剂及其制备方法和使用方法。
背景技术
有机污染废水中含有大量的有机物,一般是由造纸、皮革及食品行业排出,易造成水质富营养化,由于有机物存留时间长,且容易迁移,导致有机污染废水处理困难。
目前针对有机污染废水常用的方法有物化反应法、生化反应法和吸附法,其中物化反应法存在占地面积较大、成本高的缺点;生化反应法通常需要相关预处理,且所需设备较复杂,成本较高;吸附法具有运行成本低,操作简单的优点,被广泛应用;利用吸附材料的多孔结构可有效地吸附废水中的污染物,活性炭是常用的吸附材料,其具有高的比表面积,因此具有较强的吸附能力,但是由于活性炭吸附对水的预处理要求较高,且活性炭价格昂贵,因此一般适用于微量污染物的吸附,而对于含有大量有机物的废水来说,使用活性炭反而会提高处理成本;因此研发一种处理效果好、成本低且操作简单的有机污染废水处理剂是非常有必要的。
发明内容
本发明提供了一种有机污染废水处理剂及其制备方法和使用方法,解决了上述问题,本发明是通过如下技术方案来实现的。
本发明的第一个目的是提供一种有机污染废水处理剂的制备方法,包括以下步骤:
S1、将炉渣、麦糠、粉煤灰和水混合,制得浆料;
S2、对S1浆料进行养护;
S3、将S2养护后的浆料在600~900℃进行烧结,自然冷却至室温,粉碎,制得骨架材料;
S4、将S3制得的骨架材料浸入硫酸铝和阴离子型聚丙烯酰胺制成的混合水溶液中进行负载,过滤、干燥,制得有机污染废水处理剂。
优选地,S1中,所述炉渣的粒径为3~7mm。
优选地,S1中,所述麦糠尺寸为1~5mm。
优选地,S1中,炉渣:麦糠:粉煤灰的质量比为2:1:0.5~1.5;炉渣:水的质量比为10~15:3。
优选地,S2中,养护条件为温度20~25℃、湿度90~100%条件下养护12~24h。
优选地,S3中,烧结条件为:富氧烧结气氛下,在600~900℃烧结12~18h,升温速度为8~10℃/min。
优选地,S4混合水溶液中,硫酸铝:阴离子型聚丙烯酰胺:水质量比为2~3:1:1,负载时间为20~30min。
本发明的第二个目的是提供由上述制备方法制得的有机污染废水处理剂。
本发明的第三个目的是提供上述有机污染废水处理剂的使用方法,包括以下步骤:
在有机污染废水中加入有机污染废水处理剂,搅拌下进行吸附处理20~30min,静置,检测上清液,达标即可排放,并回收处理剂。
优选地,所述有机污染废水处理剂的添加量是有机污染废水质量的0.1%~1%。
本发明与现有技术相比具有如下有益效果:
(1)本发明以炉渣和粉煤灰为原料,并添加麦糠为致孔剂,通过烧结过程,制得多孔骨架载体,之后通过物理浸润负载硫酸铝和阴离子型聚丙烯酰胺,制得处理剂;将该处理剂置于有机污染废水中时,负载在多孔骨架上的硫酸铝和阴离子型聚丙烯酰胺产生压缩双电层,降低废水中胶粒的稳定性,使得胶粒相互凝聚,微粒增大,形成絮凝体,并通过多孔骨架材料吸附,体系静置后,废水中的污染物颗粒由于凝聚增大,同时吸附在多孔骨架材料中,进而沉降分层,随即去除沉淀物即可;
(2)本发明制备多孔载体的原料为炉渣、粉煤灰和麦糠,均是工农业生产废弃物,来源广泛,成本低,且通过负载硫酸铝和阴离子型聚丙烯酰胺,吸附和絮凝相结合,协同提高废水处理效果,处理过程操作简单,具有应用前景。
具体实施方式
为了使本领域技术人员更好地理解本发明的技术方案能予以实施,下面结合具体实施例和数据对本发明作进一步说明,但所举实施例不作为对本发明的限定。
下述各实施例中所述实验方法和检测方法,如无特殊说明,均为常规方法;所述试剂和材料,如无特殊说明,均可在市场上购买得到。
实施例1
一种有机污染废水处理剂的制备方法,包括以下步骤:
S1、将炉渣、麦糠、粉煤灰和水混合,制得浆料;炉渣:麦糠:粉煤灰的质量比为2:1:0.5;炉渣:水的质量比为10:3,炉渣的粒径为5mm,麦糠尺寸为3mm;
S2、对S1浆料在温度25℃、湿度100%条件下养护12h;
S3、富氧烧结气氛下,将S2养护后的浆料在800℃进行烧结16h,升温速度为8℃/min,之后自然冷却至室温,粉碎,制得骨架材料;
S4、将S3制得的骨架材料浸入硫酸铝和阴离子型聚丙烯酰胺制成的水溶液中进行负载20min,该水溶液中硫酸铝:阴离子型聚丙烯酰胺:水质量比为2:1:1,负载完毕后过滤、60℃干燥24h,制得有机污染废水处理剂。
实施例2
一种有机污染废水处理剂的制备方法,包括以下步骤:
S1、将炉渣、麦糠、粉煤灰和水混合,制得浆料;炉渣:麦糠:粉煤灰的质量比为2:1:1.5;炉渣:水的质量比为15:3,炉渣的粒径为3mm,麦糠尺寸为5mm;
S2、对S1浆料在温度20℃、湿度90%条件下养护24h;
S3、富氧烧结气氛下,将S2养护后的浆料在600℃进行烧结12h,升温速度为10℃/min,之后自然冷却至室温,粉碎,制得骨架材料;
S4、将S3制得的骨架材料浸入硫酸铝和阴离子型聚丙烯酰胺制成的水溶液中进行负载30min,该水溶液中硫酸铝:阴离子型聚丙烯酰胺:水质量比为3:1:1,负载完毕后过滤、60℃干燥24h,制得有机污染废水处理剂。
实施例3
一种有机污染废水处理剂的制备方法,包括以下步骤:
S1、将炉渣、麦糠、粉煤灰和水混合,制得浆料;炉渣:麦糠:粉煤灰的质量比为2:1:1;炉渣:水的质量比为12:3,炉渣的粒径为7mm,麦糠尺寸为1mm;
S2、对S1浆料在温度25℃、湿度90%条件下养护20h;
S3、富氧烧结气氛下,将S2养护后的浆料在900℃进行烧结18h,升温速度为9℃/min,之后自然冷却至室温,粉碎,制得骨架材料;
S4、将S3制得的骨架材料浸入硫酸铝和阴离子型聚丙烯酰胺制成的水溶液中进行负载25min,该水溶液中硫酸铝:阴离子型聚丙烯酰胺:水质量比为3:1:1,负载完毕后过滤、60℃干燥24h,制得有机污染废水处理剂。
对比例1
以市售活性炭为对比,具体来源为江苏康宏炭业有限公司。
首先,分别检测实施例1~3制得的有机污染废水处理剂BET比表面积分别为112m2/g、120m2/g和118m2/g,说明通过本发明方法能够制得多空隙结构的处理剂,且孔隙含量高。
其次,以活性炭为对比例,分别检测上述实施例1~3制得的有机污染废水处理剂的效果。
分别取4份200mL有机污染废水(来源陕西某造纸厂),首先分别检测上述4份有机污染废水的COD值,检测方法采用《化学需氧量的测定方法》(GB 11914-89)规定的方法;之后在有机污染废水中分别加入实施例1~3有机污染废水处理剂以及活性炭,添加量分别是有机污染废水质量的0.8%,搅拌下进行吸附处理20min,静置,检测上清液中COD值,达标即可排放,排放标准按照《地表水环境质量标准》(GB/T 3838-2002)中的规定,最后回收处理剂。实施例1~3以及对比例1处理前后COD值结果如表1所示:
表1实施例1~3以及对比例1处理前后COD值
由表1结果可得,通过实施例1~3处理剂处理后的有机污染废水上清液COD值为25.7~27.4mg/L,满足上述排放标准,且与对比例1活性炭处理剂相比,实施例1~3上清液COD值较低,且处理效率更高,原因在于,本发明以炉渣和粉煤灰为原料,并添加麦糠为致孔剂,通过烧结过程,制得多孔骨架载体,之后通过物理浸润负载硫酸铝和阴离子型聚丙烯酰胺,制得处理剂;将该处理剂置于有机污染废水中时,负载在多孔骨架上的硫酸铝和阴离子型聚丙烯酰胺产生压缩双电层,降低废水中胶粒的稳定性,使得胶粒相互凝聚,微粒增大,形成絮凝体,并通过多孔骨架材料吸附,体系静置后,废水中的污染物颗粒由于凝聚增大,同时吸附在多孔骨架材料中,进而沉降分层,上述过程通过多孔吸附以及絮凝原理协同作用,达到上述处理效果。另外,通过实验发现,处理剂的添加量是有机污染废水质量的在0.1%~1%范围内,处理效果均可达标,具体不再赘述。
再者,分别检测随着静置时间延长(0~3h)沉淀物的高度(cm)变化,结果如表2所示:
表2实施例1~3以及对比例1沉淀物高度
由表2结果可知,随着静置时间的延长,各组沉淀物高度均增大,但与对比例1相比,实施例1~3处理剂沉淀高度更大,这也与表1结果相对应,更好地说明本发明处理剂能够有效地处理有机废水,效果更好。
综上,本发明制备多孔载体的原料为炉渣、粉煤灰和麦糠,均是工农业生产废弃物,来源广泛,成本低,且通过负载硫酸铝和阴离子型聚丙烯酰胺,吸附和絮凝相结合,协同提高废水处理效果,处理过程操作简单,具有应用前景。
显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样,倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内也意图包含这些改动和变型在内。
Claims (10)
1.一种有机污染废水处理剂的制备方法,其特征在于,包括以下步骤:
S1、将炉渣、麦糠、粉煤灰和水混合,制得浆料;
S2、对S1浆料进行养护;
S3、将S2养护后的浆料在600~900℃进行烧结,自然冷却至室温,粉碎,制得骨架材料;
S4、将S3制得的骨架材料浸入硫酸铝和阴离子型聚丙烯酰胺制成的混合水溶液中进行负载,过滤、干燥,制得有机污染废水处理剂。
2.根据权利要求1所述的有机污染废水处理剂的制备方法,其特征在于,S1中,所述炉渣的粒径为3~7mm。
3.根据权利要求1所述的有机污染废水处理剂的制备方法,其特征在于,S1中,所述麦糠尺寸为1~5mm。
4.根据权利要求1所述的有机污染废水处理剂的制备方法,其特征在于,S1中,炉渣:麦糠:粉煤灰的质量比为2:1:0.5~1.5;炉渣:水的质量比为10~15:3。
5.根据权利要求1所述的有机污染废水处理剂的制备方法,其特征在于,S2中,养护条件为温度20~25℃、湿度90~100%条件下养护12~24h。
6.根据权利要求1所述的有机污染废水处理剂的制备方法,其特征在于,S3中,烧结条件为:富氧烧结气氛下,在600~900℃烧结12~18h,升温速度为8~10℃/min。
7.根据权利要求1所述的有机污染废水处理剂的制备方法,其特征在于,S4混合水溶液中,硫酸铝:阴离子型聚丙烯酰胺:水质量比为2~3:1:1,负载时间为20~30min。
8.根据权利要求1~7任一项制备方法制得的有机污染废水处理剂。
9.根据权利要求8所述的有机污染废水处理剂的使用方法,其特征在于,包括以下步骤:
在有机污染废水中加入有机污染废水处理剂,搅拌下进行吸附处理20~30min,静置,检测上清液,达标即可排放,并回收处理剂。
10.根据权利要求9所述的有机污染废水处理剂的使用方法,其特征在于,所述有机污染废水处理剂的添加量是有机污染废水质量的0.1%~1%。
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