CN104310508A - 一种废水处理剂 - Google Patents

一种废水处理剂 Download PDF

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Publication number
CN104310508A
CN104310508A CN201410599727.6A CN201410599727A CN104310508A CN 104310508 A CN104310508 A CN 104310508A CN 201410599727 A CN201410599727 A CN 201410599727A CN 104310508 A CN104310508 A CN 104310508A
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treating agent
heavy metals
wastewater treating
waste water
polyacrylamide
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CN104310508B (zh
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蒋树贤
梅胜
李绍秀
李冬梅
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Guangdong University of Technology
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Guangdong University of Technology
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    • 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
    • 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
    • C02F1/5245Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
    • 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
    • C02F1/54Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
    • C02F1/56Macromolecular compounds
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/10Inorganic compounds
    • C02F2101/20Heavy metals or heavy metal compounds

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Removal Of Specific Substances (AREA)
  • Treatment Of Water By Ion Exchange (AREA)

Abstract

本发明公开了一种废水处理剂,是将NaOH、Ca(OH)2、Ca(O2)2、聚丙烯酰胺和纳米SiO2按照质量份数比为1:2~2.5:4~6:0.5~0.8:0.2~0.3的比例混合均匀即得。本发明的废水处理剂是由纳米SiO2,Ca(OH)2、Ca(O2)2、NaOH和聚丙烯酰胺按比例配成的复合药剂,各组分协同作用,在药剂的联合作用下,能够将络合重金属从其螯合剂中置换出来,并沉淀除去。该种处理剂置换法比常规的反渗透、离子交换、重金属捕集剂等方法更加经济、节省成本,节省能耗,而且适用范围广,对各种络合重金属(包括络合能力极强的EDTA溶液),都有显著的置换沉淀效果。

Description

一种废水处理剂
技术领域
     本发明涉及废水处理领域,具体地说,涉及一种废水处理剂。
背景技术
现有的去除强稳定性络合重金属的方法有反渗透法、离子交换法、重金属捕集剂、活性炭吸附法等,这些方法成本高,有些捕集剂对某些重金属的去除没有效果,这对含有多种重金属的工业废水的处理具有局限性。
发明内容
本发明的目的是克服现有技术的不足,提供一种价廉高效的废水处理剂,用于处理含强稳定性络合重金属的废水。
为了实现上述目的,本发明采用如下技术方案:
一种废水处理剂,由如下重量份数比的组分组成:
NaOH              1
Ca(OH)2            2~2.5
Ca(O2)2             4~6
聚丙烯酰胺(PAM)    0.5~0.8
纳米SiO2                  0.2~0.3
与现有技术相比,本发明具有如下有益效果:本发明的废水处理剂是由纳米SiO2,Ca(OH)2、Ca(O2)2、NaOH和聚丙烯酰胺按比例配成的复合药剂,各组分协同作用,在药剂的联合作用下,能够将络合重金属从其螯合剂中置换出来,并沉淀除去。
该种处理剂置换法比常规的反渗透、离子交换、重金属捕集剂等方法更加经济、节省成本,节省能耗,而且适用范围广,对铜、砷、镍、铅、锌等重金属都具有良好的置换效果。
具体实施方式
实施例1:制备废水处理剂
将NaOH、Ca(OH)2、Ca(O2)2、聚丙烯酰胺和纳米SiO2按照质量比为1:2.3:5:0.7:0.2的比例进行混合,混合均匀得到废水处理剂。
实施例2:制备废水处理剂
将NaOH、Ca(OH)2、Ca(O2)2、聚丙烯酰胺和纳米SiO2按照质量比为1:2.2:4.5:0.6:0.3的比例进行混合,混合均匀得到废水处理剂。
实施例3:制备废水处理剂
将NaOH、Ca(OH)2、Ca(O2)2、聚丙烯酰胺和纳米SiO2按照质量比为1:2.2:5.5:0.7:0.2的比例进行混合,混合均匀得到废水处理剂。
处理方法为:将废水处理剂投入到废水中,以300r/min的转速搅拌2min,再以80r/min的转速搅拌7min,静置30min,重金属就会从其络合离子中置换出来并沉淀除去。废水处理剂与废水重金属的摩尔比以及去除效果如表1-3所示。
表1、废水处理剂对酒石酸铜的去除效果(原水铜离子浓度100mg/L)
摩尔比[Ca2+]/[Cu2+] 1 2 2.5 3 3.5 4 4.5 5
剩余铜浓度 1.61 0.72 0.57 0.35 0.37 0.33 0.32 0.37
铜去除率 96.39% 98.28% 98.93% 99.45% 99.58% 99.67% 99.68% 99.63%
表2、废水处理剂对ZnEDTA的去除效果(原水锌离子浓度100mg/L)
摩尔比[Ca2+]/[Zn2+] 1 2 2.5 3 3.5 4 4.5 5
剩余铜浓度 4.07 2.62 1.07 0.65 0.46 0.26 0.33 0.35
铜去除率 95.93% 97.38% 98.93% 99.35% 99.54% 99.74% 99.67% 99.65%
表3、废水处理剂对NiNTA的去除效果(原水镍离子浓度100mg/L)
摩尔比[Ca2+]/[Ni2+] 1 2 2.5 3 3.5 4 4.5 5
剩余铜浓度 2.57 2.08 1.26 0.54 0.42 0.29 0.26 0.29
铜去除率 97.43% 97.92% 98.74% 99.46% 99.58% 99.71% 99.74% 99.71%
以上是废水处理剂对几种典型的络合重金属的实验效果,从实验数据可以看出,废水处理剂对铜、锌、镍、铅等重金属与EDTA、NTA、酒石酸、柠檬酸等形成的各种络合重金属都有显著的置换沉淀效果。

Claims (1)

1.一种废水处理剂,其特征在于由如下重量份数比的组分组成:
NaOH         1
Ca(OH)2       2~2.5
Ca(O2)2        4~6
聚丙烯酰胺   0.5~0.8
纳米SiO2          0.2~0.3。
CN201410599727.6A 2014-10-31 2014-10-31 一种废水处理剂 Expired - Fee Related CN104310508B (zh)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107673451A (zh) * 2017-11-08 2018-02-09 许伟琦 防止消毒过程产生致癌物质的医疗污水处理剂和制备方法
CN107758924A (zh) * 2017-11-08 2018-03-06 许伟琦 一种防止产生致癌物质的医疗污水处理方法和处理剂
CN108147480A (zh) * 2017-12-30 2018-06-12 郑州源冉生物技术有限公司 一种用于河流污染处理的药剂及其制备方法
CN112358088A (zh) * 2020-11-09 2021-02-12 张家港市五湖新材料技术开发有限公司 一种废水智能处理方法及系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201354338Y (zh) * 2008-08-04 2009-12-02 北京理工大学 矿化降解有机废水的处理设备
CN102180537A (zh) * 2011-04-01 2011-09-14 广东工业大学 一种络合重金属复合纳米置换剂的制备方法及其应用

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201354338Y (zh) * 2008-08-04 2009-12-02 北京理工大学 矿化降解有机废水的处理设备
CN102180537A (zh) * 2011-04-01 2011-09-14 广东工业大学 一种络合重金属复合纳米置换剂的制备方法及其应用

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107673451A (zh) * 2017-11-08 2018-02-09 许伟琦 防止消毒过程产生致癌物质的医疗污水处理剂和制备方法
CN107758924A (zh) * 2017-11-08 2018-03-06 许伟琦 一种防止产生致癌物质的医疗污水处理方法和处理剂
CN107758924B (zh) * 2017-11-08 2021-04-30 许伟琦 一种防止产生致癌物质的医疗污水处理方法和处理剂
CN108147480A (zh) * 2017-12-30 2018-06-12 郑州源冉生物技术有限公司 一种用于河流污染处理的药剂及其制备方法
CN112358088A (zh) * 2020-11-09 2021-02-12 张家港市五湖新材料技术开发有限公司 一种废水智能处理方法及系统
CN112358088B (zh) * 2020-11-09 2024-03-05 金山环保集团有限公司 一种废水智能处理方法及系统

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