CN111453857A - 污水处理仿生水草的制作工艺 - Google Patents
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Abstract
本发明公开污水处理仿生水草的制作工艺,包括以下步骤:S1:制备纳米羟基磷酸铜:向乙酸铜溶液中滴加磷酸溶液,控制Cu2+与PO4 3‑的摩尔比为2:1,并调节pH为3~4,150~160℃水热晶化4h,洗涤、干燥、研磨后,得到纳米羟基磷酸铜;S2:制备仿生水草基体:260~280℃加热PET至完全熔融后,加入PBT,搅拌至共混熔融后,再加入氧化硅、纳米羟基磷酸铜、硅烷偶联剂A‑172、紫外线吸收剂UVP‑327,搅拌5~8min,倒入模具中,热压成型,冷却结晶,得到仿生水草基体;S3:切割后,即得所述污水处理仿生水草。本发明首次在仿生水草制备过程中加入纳米羟基磷酸铜,能高效催化降解水体中的有机污染物,赋予仿生水草优异的光氧化能力,减小微生物工作负担,提高净水效率。
Description
技术领域
本发明属于水处理技术领域,具体涉及污水处理仿生水草的制作工艺。
背景技术
仿生水草的理念就是模拟天然水草在水质净化中的主要功能,利用各种纤维填料加工成天然水草形态,是一种高比表面积、高负荷的微生物载体,利用纯生态的方法净化水质。仿生水草投放于水中时,会将原本存在于水体底泥、植物根系或悬浮于水中的本土微生物富集在生态水草表面,通过微生物对水中营养盐、有机物的吸收分解,以降解污染物,强化水体的自净能力,从而逐步恢复水体的良好生态系统。但是,单一通过微生物修复水体,周期较长,对于严重恶化的水质,难以达到理想的净化效果。
发明内容
针对现有技术的不足之处,本发明的目的在于提供污水处理仿生水草的制作工艺。
本发明的技术方案概述如下:
污水处理仿生水草的制作工艺,包括以下步骤:
S1:制备纳米羟基磷酸铜:向乙酸铜溶液中滴加磷酸溶液,控制Cu2+与PO4 3-的摩尔比为2:1,并调节pH为3~4,置于聚四氟乙烯内衬的反应釜中,150~160℃水热晶化4h,洗涤、干燥、研磨后,得到纳米羟基磷酸铜;
S2:制备仿生水草基体:260~280℃加热聚对苯二甲酸乙二醇酯至完全熔融后,加入聚对苯二甲酸丁二酯,搅拌至共混熔融后,再加入氧化硅、纳米羟基磷酸铜、硅烷偶联剂A-172、紫外线吸收剂UVP-327,搅拌5~8min,倒入模具中,热压成型,冷却结晶,得到仿生水草基体;聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二酯、氧化硅、纳米羟基磷酸铜、硅烷偶联剂A-172、紫外线吸收剂UVP-327的质量比为10:(2~5):(3~4.5):(0.1~0.3):(0.2~0.3):(0.15~0.2);
S3:将所得仿生水草基体进行切割,即得所述污水处理仿生水草。
优选的是,所述乙酸铜溶液浓度为5~8%。
优选的是,所述磷酸溶液浓度为15~20%。
优选的是,所述氧化硅粒径≤150μm。
优选的是,所述热压成型的温度为255~270℃、压力为10~15MPa、处理时间为10~15min。
优选的是,所述冷却结晶过程为:在温度为200~215℃、压力为8~10MPa的条件下,冷却结晶1.5~2h,再以15℃/min速率降温至室温。
优选的是,所述热压成型的温度为255~270℃、压力为10~15MPa。
优选的是,所述切割过程具体为:按照4~5cm的间隔沿着仿生水草基体长边方向进行顺次切割,每次切割至距离基体边缘5~7cm处为止。
本发明的有益效果:
1、本发明首次在仿生水草制备过程中加入纳米羟基磷酸铜,纳米羟基磷酸铜是一种可见光响应型光催化剂,赋予仿生水草优异的光氧化能力,在可见光的照射下,能高效催化降解水体中的有机污染物,去除微生物无法降解的甲醛、氰化物、苯胺等有害物质,并减小微生物工作负担,显著提高净水效率,缩短污水处理时间,同时,纳米羟基磷酸铜是掺杂于仿生水草中,参与仿生水草的构成,相比于表面沉淀负载或涂覆的方式,羟基磷酸铜不会脱落,能持久、稳定地发挥催化降解的作用;此外,纳米羟基磷酸铜还作为纳米成核剂使用,在热压成型、冷却结晶过程中,加速PET、PBT成核,形成致密的结晶,阻隔溶解氧和水分子的渗入,进一步提高仿生水草强度及抗老化性能。
2、本发明仿生水草化学性质稳定,不水解、抗老化,强度较高,对微生物无毒害作用。
附图说明
图1为污水处理仿生水草的制作工艺流程图。
具体实施方式
下面结合实施例对本发明做进一步的详细说明,以令本领域技术人员参照说明书文字能够据以实施。
实施例1
污水处理仿生水草的制作工艺,包括以下步骤:
S1:制备纳米羟基磷酸铜:向5%乙酸铜溶液中滴加15%磷酸溶液,控制Cu2+与PO4 3-的摩尔比为2:1,并调节pH为3,置于聚四氟乙烯内衬的反应釜中,150℃水热晶化4h,洗涤、干燥、研磨后,得到纳米羟基磷酸铜;
S2:制备仿生水草基体:265℃加热1kg聚对苯二甲酸乙二醇酯至完全熔融后,加入0.2kg聚对苯二甲酸丁二酯,搅拌至共混熔融后,再加入0.3kg粒径≤150μm的氧化硅、0.01kg纳米羟基磷酸铜、0.02kg硅烷偶联剂A-172、0.015kg紫外线吸收剂UVP-327,搅拌8min,倒入模具中,在温度为255℃、压力为10MPa、处理时间为10min的条件下,热压成型,以10℃/min速率降温至200℃,于8MPa压力下,冷却结晶1.5h,再以15℃/min速率降温至室温,制得规格为0.5m×1.2m×0.3cm的仿生水草基体;
S3:按照4cm的间隔沿着仿生水草基体长边(1.2m)方向进行顺次切割,每次切割至距离基体边缘7cm处时,不再继续切割,得到由30个方条组成的仿生水草。
实施例2
污水处理仿生水草的制作工艺,包括以下步骤:
S1:制备纳米羟基磷酸铜:向8%乙酸铜溶液中滴加20%磷酸溶液,控制Cu2+与PO4 3-的摩尔比为2:1,并调节pH为4,置于聚四氟乙烯内衬的反应釜中,160℃水热晶化4h,洗涤、干燥、研磨后,得到纳米羟基磷酸铜;
S2:制备仿生水草基体:280℃加热1kg聚对苯二甲酸乙二醇酯至完全熔融后,加入0.5kg聚对苯二甲酸丁二酯,搅拌至共混熔融后,再加入0.45kg粒径≤120μm的氧化硅、0.03kg纳米羟基磷酸铜、0.03kg硅烷偶联剂A-172、0.02kg紫外线吸收剂UVP-327,搅拌8min,倒入模具中,在温度为270℃、压力为15MPa、处理时间为10min的条件下,热压成型,以10℃/min速率降温至215℃,于10MPa压力下,冷却结晶2h,再以15℃/min速率降温至室温,制得规格为0.5m×1.5m×0.3cm的仿生水草基体;
S3:按照5cm的间隔沿着仿生水草基体长边(1.5m)方向进行顺次切割,每次切割至距离基体边缘7cm处时,不再继续切割,得到由30个方条组成的仿生水草。
对比例1与实施例1相同,区别在于:不添加纳米羟基磷酸铜。
将实施例1~2及对比例1制出的仿生水草按照1组/5m2的密度安装在池塘中,水深0.5m,测定水体初始理化值M1,在晴朗、光照充足的天气下,处理2d,并测定水体初始理化值M2,并按照公式降解率=100%×(M1-M2)/M1进行计算,试验结果如下表所示:
由上表可知,本发明具有优异的光氧化能力,在可见光的照射下,能高效催化降解污染水体中的有机污染物,去除微生物无法降解的甲醛、氰化物、苯胺等有害物质。
尽管本发明的实施方案已公开如上,但其并不仅仅限于说明书和实施方式中所列运用,它完全可以被适用于各种适合本发明的领域,对于熟悉本领域的人员而言,可容易地实现另外的修改,因此在不背离权利要求及等同范围所限定的一般概念下,本发明并不限于特定的细节。
Claims (7)
1.一种污水处理仿生水草的制作工艺,其特征在于,包括以下步骤:
S1:制备纳米羟基磷酸铜:向乙酸铜溶液中滴加磷酸溶液,控制Cu2+与PO4 3-的摩尔比为2:1,并调节pH为3~4,置于聚四氟乙烯内衬的反应釜中,150~160℃水热晶化4h,洗涤、干燥、研磨后,得到纳米羟基磷酸铜;
S2:制备仿生水草基体:260~280℃加热聚对苯二甲酸乙二醇酯至完全熔融后,加入聚对苯二甲酸丁二酯,搅拌至共混熔融后,再加入氧化硅、纳米羟基磷酸铜、硅烷偶联剂A-172、紫外线吸收剂UVP-327,搅拌5~8min,倒入模具中,热压成型,冷却结晶,得到仿生水草基体;聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二酯、氧化硅、纳米羟基磷酸铜、硅烷偶联剂A-172、紫外线吸收剂UVP-327的质量比为10:(2~5):(3~4.5):(0.1~0.3):(0.2~0.3):(0.15~0.2);
S3:将所得仿生水草基体进行切割,即得所述污水处理仿生水草。
2.根据权利要求1所述污水处理仿生水草的制作工艺,其特征在于,所述乙酸铜溶液浓度为5~8%。
3.根据权利要求1所述污水处理仿生水草的制作工艺,其特征在于,所述磷酸溶液浓度为15~20%。
4.根据权利要求1所述污水处理仿生水草的制作工艺,其特征在于,所述氧化硅粒径≤150μm。
5.根据权利要求1所述污水处理仿生水草的制作工艺,其特征在于,所述热压成型的温度为255~270℃、压力为10~15MPa、处理时间为10~15min。
6.根据权利要求1所述污水处理仿生水草的制作工艺,其特征在于,所述冷却结晶过程为:在温度为200~215℃、压力为8~10MPa的条件下,冷却结晶1.5~2h,再以15℃/min速率降温至室温。
7.根据权利要求1所述污水处理仿生水草的制作工艺,其特征在于,所述切割过程具体为:按照4~5cm的间隔沿着仿生水草基体长边方向进行顺次切割,每次切割至距离基体边缘5~7cm处为止。
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