CN100408161C - 废水处理用的改性硅藻精土的配方及其制备方法 - Google Patents

废水处理用的改性硅藻精土的配方及其制备方法 Download PDF

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CN100408161C
CN100408161C CNB2005102001137A CN200510200113A CN100408161C CN 100408161 C CN100408161 C CN 100408161C CN B2005102001137 A CNB2005102001137 A CN B2005102001137A CN 200510200113 A CN200510200113 A CN 200510200113A CN 100408161 C CN100408161 C CN 100408161C
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diatomite
lime
aluminum sulfate
waste water
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林金画
吴金炉
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福建省瑞泉环保科技有限公司
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    • C04B33/04Clay; Kaolin
    • 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
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/0203Solid 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
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    • 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
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/0203Solid 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
    • B01J20/0274Solid 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 characterised by the type of anion
    • B01J20/0281Sulfates of compounds other than those provided for in B01J20/045
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    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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    • B01J20/00Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/04Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of alkali metals, alkaline earth metals or magnesium
    • B01J20/041Oxides or hydroxides
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    • 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
    • B01J20/02Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
    • B01J20/10Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
    • B01J20/14Diatomaceous earth
    • BPERFORMING OPERATIONS; TRANSPORTING
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    • BPERFORMING OPERATIONS; TRANSPORTING
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    • 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
    • B01J20/3078Thermal treatment, e.g. calcining or pyrolizing
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2220/00Aspects relating to sorbent materials
    • B01J2220/40Aspects relating to the composition of sorbent or filter aid materials
    • B01J2220/42Materials comprising a mixture of inorganic materials
    • 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
    • C02F1/281Treatment of water, waste water, or sewage by sorption using inorganic 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
    • C02F1/52Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
    • C02F1/5236Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents

Abstract

一种废水处理用的改性硅藻精土的配方及其制备方法,其特征在于:所述配方中各组分的重量配比是硅藻精土∶石灰∶硫酸铝(或其他)为5~6∶3~4∶1~1.5;其制备方法是将硅藻精土置于容器中,加水搅拌调成糊状,继续搅拌,加入配方量的硫酸铝(或其他),搅匀20~40分钟,加入配方量的石灰,搅匀后振荡20~40分钟,于60~90℃下烘干,后冷却、粉碎,100~200目过筛后置于烧炉中,于1~2小时内升温至400~700℃,保温2~5小时,冷却、粉碎,200~300目过筛后备用。本发明为城市的废水处理提供了一种安全可靠、效益更高的新方法,具有较大的推广应用价值。

Description

废水处理用的改性硅藻精土的配方及其制备方法技术领域本发明涉及一种废水处理用的改性硅藻精土的配方及其制备方法。 背景技术目前,向废水中投加一定的吸附剂和絮凝剂来去除其中的污染物质是废水处理技术中的 一种常用方法。硅藻土由于其自身具有的比表面积大、孔隙大、吸附能力强等优点己被广泛 地应用于废水处理中,但因其本身并不具有絮凝作用,故使其在应用上存在一定的不足。专 利号为96122377.4,名称为"用硅藻精土处理剂处理污水的工艺及设备"的发明专利文献中 ,提供了一种硅藻精土的成分配方,其特征系为采用硅藻精土和一些絮凝剂混合配制成一种 污水处理剂,该处理剂虽对污水中的有机污染物有一定的去除效果,但经实践证明其仍存在 以下缺点: 一是同样去除一定量的污水中的有机污染物,其用量大,从而导致产生大量的污 泥,这样不但使成本加大,而且还随之增加了处理大量污泥的费用;二是该混合配制而成的 处理剂对污水中的氨氮等有害物质去除效果很差,从而导致处理后的污水很难达到全面达标 排放的国家要求。发明内容本发明的目的在于提供一种以硅藻精土为主要原料,通过植入[0H]—或Al3+、 Fe2+等基 团以增大其吸附性能和絮凝性能的废水处理用的改性硅藻精土的配方及其制备方法。本发明的废水处理用的改性硅藻精土的配方,其特征在于:所述的改性硅藻精土的配方 中各组分的重量配比是硅藻精土:石灰:硫酸铝(或氯化铝、氯化铁、硫酸亚铁等无机絮凝 剂)为5〜6: 3〜4: 1〜1.5。本发明的废水处理用的改性硅藻精土的制备方法,其特征在于,按照以下步骤进行-① 将硅藻精土置于容器中,加入少量的水搅拌,调成均匀的糊状;② 继续搅拌,加入配方量的硫酸铝(或氯化铝、氯化铁、硫酸亚铁等无机絮凝剂),搅 匀20〜40分钟;③ 加入配方量的石灰,搅匀后振荡20〜40分钟,于60〜90'C下烘干,后冷却;④ 将烘千后的物料粉碎,100〜200目过筛;⑤将上述的粉状物置于烧炉中,于1〜2小时内升温至400〜700'C,后保温2〜5小时, 却、粉碎,于200〜300目过筛后备用。本发明的优点在于: 一是与化学絮凝不同,改性硅藻精土是以硅藻土微粒作为吸附及絮 凝的核心,以其表面的改性涂层作为吸附促进剂和絮凝架桥结合剂,借助于硅藻土的比表面 积大的优势,通过表面改性可以接枝大量的活性基团附着于表面,强化了改性硅藻土对废水 中污染物质的吸附性能,同时,絮凝状态的硅藻土可以进一步对废水中的有机杂质网捕和吸 附,从而进一步增强硅藻土的吸附和絮凝能力;二是改性硅藻精土对废水中的氨氮、磷、重 金属有极高的去除能力,尤其是pH小于8、污染物浓度较低的废水,其处理效果好,在去除 一定量污水中的污染物时,其用量大大减少,从而节约了成本,减少了污泥的产生量。具体实施方式实施例:本发明所用的硅藻精土粉末系由云南庆中环保公司提供,该硅藻精土含有98%的硅藻量 ,具有40〜220um大小的蜂巢结构微孔,经分析,其化学成分含84.2XSi02(其中非结晶 Si02 97.5%,结晶Si。2 2D、 6.51%A1203、 5. 23%Fe20,l. 32%CaO。本发明是这样实现的:将90g硅藻精土置于容器中,加入少量的水搅拌,调成均匀的糊状;继续搅拌,加入15g硫酸铝,搅匀30分钟;再加入45g石灰,搅匀后振荡30分钟,于80'C 下烘干,后冷却;将烘千后的物料粉碎,150目过筛;将上述的粉状物置于烧炉中,于2小时 内升温至600'C,后保温4小时,冷却、粉碎,于250目过筛后备用。最后所制得的改性硅藻精土成品的组成是硅藻原土:石灰:硫酸铝为6: 3: 1。 取经一级处理后的城市污水1000ml,置于混凝反应沉淀器,分别加入按专利号为 96122377. 4的专利文献所述的方法配制而成的处理剂(简称:对比试剂)和本发明的改性硅 藻精土 (简称:发明试剂)150mg,搅拌20分钟后静置沉淀120分钟,取其上清夜分析,处理 效果如下:<table>table see original document page 4</column></row> <table>本发明为城市的废水处理及其他废水处理提供了一种安全可靠、效益更高的新方法,具 有较大的推广应用价值。

Claims (2)

1. 一种废水处理用的改性硅藻精土的配方,其特征在于:所述的改性硅藻精土的配方中各组分的是硅藻精土∶石灰∶无机絮凝剂硫酸铝、氯化铝、氯化铁或硫酸亚铁为5~6∶3~4∶1~1.5。
CNB2005102001137A 2005-02-28 2005-02-28 废水处理用的改性硅藻精土的配方及其制备方法 CN100408161C (zh)

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CN105130011B (zh) * 2015-09-07 2017-12-22 深圳市德庆科技有限公司 硅藻土污水处理剂、制备方法及其技术应用
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CN105561926A (zh) * 2015-12-24 2016-05-11 淄博永辰环境影响评价有限公司 一种废气处理的复合吸附材料的制备方法
CN105478086A (zh) * 2015-12-24 2016-04-13 淄博永辰环境影响评价有限公司 一种工业废水重金属离子的复合吸附材料的制备方法
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CN105521683A (zh) * 2015-12-24 2016-04-27 淄博永辰环境影响评价有限公司 一种工业废气的处理方法
CN107502007B (zh) * 2017-09-26 2020-04-07 重庆华亚家私有限公司 一种改性硅藻土水性环保油漆及其制备方法
CN110078322B (zh) * 2018-01-24 2021-04-02 上海交通大学 油气田废弃钻井泥浆的处理方法

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