CN104645939B - 一种基于地质材料的复合烧结滤芯及其制备方法 - Google Patents
一种基于地质材料的复合烧结滤芯及其制备方法 Download PDFInfo
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Abstract
本发明提供了一种基于地质材料的复合烧结滤芯,该滤芯由以下组分组成,各组分以及各组分的质量份数为:改性麦饭石20~80份,改性沸石12~60份,改性火山石5~20份,陶土4~8份,玉米淀粉颗粒3~10份,膨润土2~5份。本发明同时还提供了制备上述复合烧结滤芯的方法,包括以下步骤:配料、原料混合、成型、烧制。本发明所提供的复合烧结滤芯能够在不破坏天然水分子结构的前提下,除去水体中TN、TP、余氯、铁锈、细菌和重金属等污染物,同时释放出特定的对人体有益元素。
Description
技术领域
本发明提供了一种基于地质材料的复合烧结滤芯及其制造方法,用于饮用水水质处理,属于水质净化研究领域。
背景技术
近年来,我国水污染情况日益严重。据调查资料显示:我国有2.5亿居民的住宅区靠近重点排污企业和交通干道,2.8亿居民使用不安全饮用水。随着人们健康观念的不断提升,对于饮用水的水质要求越来越高。但是目前大部分自来水厂处理工艺落后,所生产的自来水属极低标准水;即使部分达标的自来水在输水管网、高楼水塔中也会造成二次污染而不达标。在市政自来水水质健康无法保证的情况下,各类家用净水器应运而生。
目前市面上的各类净水器,滤芯大多采用RO反渗透膜,其核心技术为反渗透技术。即使是没有经过污染的天然水,经过反渗透法等一系列提纯工艺抽走了水中所有矿物元素后,也会失去小分子团赖以支撑结构的支架而“退化”,并且因没有任何矿物元素而失去其生理功能。归根结底,纯净水就是至清的死水,没有活性。所谓“水至清则无鱼”,也就是因为太清澈的水含矿物质特别少,不利于生物生长。人喝水也是如此,长期饮用纯净水,会降低人体免疫功能,使体内一些有益的营养物质流失。老年人特别是患有心血管疾病、糖尿病的老人、儿童、孕妇更不宜长期饮用这种水。
部分标明具有矿化功能的净水器大多只是添加麦饭石球,该滤料加工工艺为磨粉后用有机粘结剂造粒,这样将导致矿物天然微孔结构破坏,降低其交换吸附能力,并会导致矿物内有害矿物元素析出;有机粘结剂长期浸泡在水体中,也会造成二次污染。
目前公认的说法是健康水应该是含有有益矿物元素的活性小分子水。但是天然矿泉水资源有限,导致其价格昂贵,部分瓶装矿泉水价格已达百元以上。因此提供一种能在不破坏天然水分子结构的前提下,除去水体中TN、TP、余氯、铁锈、细菌和重金属等污染物,同时能释放出特定的对人体有益元素(如锶、硒等)的净水滤芯就显得尤为重要。
发明内容
本发明提供了一种基于地质材料的复合烧结滤芯及其制造方法,解决了背景技术中的不足,其能够在不破坏天然水分子结构的前提下,除去水体中TN、TP、余氯、铁锈、细菌和重金属等污染物,同时释放出特定的对人体有益元素。
实现本发明上述目的所采用的技术方案为:
一种基于地质材料的复合烧结滤芯,该滤芯由以下组分组成,各组分以及各组分的质量份数为:改性麦饭石20~80份,改性沸石12~60份,改性火山石5~20份,陶土4~8份,玉米淀粉颗粒3~10份,膨润土2~5份。
所述的改性麦饭石的制备方法如下:采用天然麦饭石研碎,过筛40~70目,用去离子水在超声波清洗仪中洗涤1~2个小时,然后在烘箱内烘干,在马弗炉中逐渐升到350~500℃,灼烧1.5~3个小时,然后使用微波进行改性,再使用HCl溶液在80~140℃条件下浸泡3~5小时,再用NaCl溶液浸泡20~30小时,每隔5~7小时振荡3~8分钟,最后倒出上清液,用去离子水在超声波清洗仪中充分冲洗。
所述的天然麦饭石采用内蒙通辽的原生麦饭石。
所述的改性沸石采用天然沸石研碎,过筛40~70目,用去离子水在超声波清洗仪中洗涤1~2个小时,然后在烘箱内烘干,在马弗炉中逐渐升到350~500℃,灼烧1.5~3个小时,然后使用微波进行改性,再使用HCl溶液在80~140℃条件下浸泡3~5小时,再用NaCl溶液浸泡20~30小时,每隔5~7小时振荡3~8分钟,最后倒出上清液,用去离子水在超声波清洗仪中充分冲洗。
所述的天然沸石采用河南郑州的丝光沸石,平均孔隙直径为0.8mm,孔隙率为85%。
所述的改性火山石采用天然火山石研碎,过筛40~70目,用去离子水在超声波清洗仪中洗涤1~2个小时,然后在烘箱内烘干,在马弗炉中逐渐升到350~500℃,灼烧1.5~3个小时。
所述的天然火山石采用云南省保山市腾冲县境内的原生火山石。
所述的膨润土采用钠基膨润土。
本发明同时还提供了一种制备上述的基于地质材料的复合烧结滤芯的方法,包括以下步骤:
(1)配料:按上述的原料重量份进行配料;
(2)原料混合:将所称取的原料进行混合,并加占原料总重量15%~25%的水搅拌,搅拌均匀后放置;
(3)成型:将搅拌好的原料装填至模具中,用液压机进行压制成型,然后风干;
(4)烧制:把风干的原料放入热压烧结机中,烧结至750~850℃,冷却,即可制得复合烧结滤芯。
与现有技术相比,本发明提供的用于净水器的基于地质材料的复合烧结滤芯具有以下优点:一是地质材料丰富,经过改性后的三种矿石可应用于多个地区的不同水质,应用较为广泛;二是所用矿物颗粒没有磨成粉末,保持了原有的良好孔道结构,具有很好的交换吸附能力;三是复合烧结滤芯使用天然粘合剂,不采用人工合成的有机粘结剂,不会对水造成二次污染,四是烧结矿石滤芯易于进行反冲洗进行多次利用,达到使用寿命后易于更换。
具体实施方式
下面结合具体实施例对本发明做详细具体的说明,但是本发明的保护范围并不局限于以下实施例。
本发明的以下实施例中所采用的改性麦饭石的制备方法如下:采用天然麦饭石研碎,过筛45目,用去离子水在超声波清洗仪中洗涤1个小时,然后在烘箱内烘干,在马弗炉中逐渐升到420℃,灼烧2个小时,然后再使用240w中火微波进行改性,再使用1mol/L的HCl溶液在95℃条件下浸泡4小时,再用0.5mol/L的NaCl溶液浸泡24小时,每隔6小时振荡5分钟。倒出上清液,用去离子水在超声波清洗仪中多次重复冲洗。所述的天然麦饭石采用内蒙通辽的原生麦饭石。
所采用的改性沸石采用天然沸石研碎,过筛45目,用去离子水在超声波清洗仪中洗涤1个小时,然后在烘箱内烘干,在马弗炉中由100℃逐渐升到350℃,灼烧2个小时,然后再使用然后再使用240w中火微波进行改性,再使用1mol/L的HCl溶液在120℃条件下浸泡4小时,再用0.7mol/L的NaCl溶液浸泡24小时,每隔6小时振荡5分钟。倒出上清液,用去离子水在超声波清洗仪中多次重复冲洗。所述的天然沸石采用河南郑州的丝光沸石,平均孔隙直径为0.8mm,孔隙率为85%。
所采用的改性火山石采用天然火山石研碎,过筛60目,用去离子水在超声波清洗仪中洗涤1个小时,然后在烘箱内烘干,在马弗炉中由100℃逐渐升到480℃,灼烧3个小时。所述的天然火山石采用云南省保山市腾冲县境内的原生火山石,该原生火山石孔隙多、质量轻、强度高、保温、隔热、吸音、防火、耐酸碱、耐腐蚀,且无污染、无放射性等,是理想的天然绿色、环保节能的原料。
所述的膨润土采用钠基膨润土。
实施例1
本实施例中所提供的基于地质材料的复合烧结滤芯的制备方法如下:按改性麦饭石700g,改性沸石540g,改性火山石280g,陶土80g,玉米淀粉颗粒140g,膨润土70g进行配料,其中每15 g为一份。
将所称取的原料进行混合,并加400g水搅拌,搅拌均匀后放置半小时;
将搅拌好的原料装填至模具中,用液压机进行压制成型,然后风干;把风干的原料放入热压烧结机中,烧结至800℃,冷却,即可制得复合烧结滤芯。
通过实验发现本实施例提供的基于地质材料的复合烧结滤芯所净化的水中Ca、Mg离子的含量明显降低,由111.5mg/l(接近硬水)降到82.15mg/l(接近软水)(以CaCO3计),有效地降低了水硬度,起到了很好的软水作用。As、Au、Cr、V、等元素的去除效果明显,其中对As的去除效果更达到了98%,对Pb的去除率达到了93%,对Cr的去除率达到了90%,对总氮总磷的去除率达到了75%,而对人体有益的微量元素Zn、Fe、Sr等有了很大的增加。
实施例2
本实施例中所提供的基于地质材料的复合烧结滤芯的制备方法如下:按改性麦饭石750g,改性沸石540g,改性火山石180g,陶土70g,玉米淀粉颗粒90g,膨润土40g进行配料,其中每10 g为一份。
将所称取的原料进行混合,并加350g水搅拌,搅拌均匀后放置半小时;
将搅拌好的原料装填至模具中,用液压机进行压制成型,然后风干;把风干的原料放入热压烧结机中,烧结至840℃,冷却,即可制得复合烧结滤芯。
Claims (6)
1.一种基于地质材料的复合烧结滤芯,其特征在于:该滤芯由以下组分组成,各组分以及各组分的质量份数为:改性麦饭石20~80份,改性沸石12~60份,改性火山石5~20份,陶土4~8份,玉米淀粉颗粒3~10份,膨润土2~5份;
所述的改性麦饭石的制备方法如下:采用天然麦饭石研碎,过筛40~70目,用去离子水在超声波清洗仪中洗涤1~2个小时,然后在烘箱内烘干,在马弗炉中逐渐升到350~500℃,灼烧1.5~3个小时,然后使用微波进行改性,再使用HCl溶液在80~140℃条件下浸泡3~5小时,再用NaCl溶液浸泡20~30小时,每隔5~7小时振荡3~8分钟,最后倒出上清液,用去离子水在超声波清洗仪中充分冲洗;
所述的改性沸石采用天然沸石研碎,过筛40~70目,用去离子水在超声波清洗仪中洗涤1~2个小时,然后在烘箱内烘干,在马弗炉中逐渐升到350~500℃,灼烧1.5~3个小时,然后使用微波进行改性,再使用HCl溶液在80~140℃条件下浸泡3~5小时,再用NaCl溶液浸泡20~30小时,每隔5~7小时振荡3~8分钟,最后倒出上清液,用去离子水在超声波清洗仪中充分冲洗;
所述的改性火山石采用天然火山石研碎,过筛40~70目,用去离子水在超声波清洗仪中洗涤1~2个小时,然后在烘箱内烘干,在马弗炉中逐渐升到350~500℃,灼烧1.5~3个小时。
2.根据权利要求1所述的基于地质材料的复合烧结滤芯,其特征在于:所述的天然麦饭石采用内蒙通辽的原生麦饭石。
3.根据权利要求1所述的基于地质材料的复合烧结滤芯,其特征在于:所述的天然沸石采用河南郑州的丝光沸石,平均孔隙直径为0.8mm,孔隙率为85%。
4.根据权利要求1所述的基于地质材料的复合烧结滤芯,其特征在于:所述的天然火山石采用云南省保山市腾冲县境内的原生火山石。
5.根据权利要求1所述的基于地质材料的复合烧结滤芯,其特征在于:所述的膨润土采用钠基膨润土。
6.一种制备权利要求1所述的基于地质材料的复合烧结滤芯的方法,其特征在于包括以下步骤:
(1)配料:按权利要求1所述的原料重量份进行配料;
(2)原料混合:将所称取的原料进行混合,并加占原料总重量15%~25%的水搅拌,搅拌均匀后放置;
(3)成型:将搅拌好的原料装填至模具中,用液压机进行压制成型,然后风干;
(4)烧制:把风干的原料放入热压烧结机中,烧结至750~850℃,冷却,即可制得复合烧结滤芯。
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