Film-forming material on filler for removing nitrogen from wastewater

Abstract

The invention discloses film-forming material on filler for removing nitrogen from wastewater, which comprises polyamide and silicate which is nanometer inorganic substance, wherein the silicate is adhered to the polyamide. The silicate accounts for 1-2 percent of the film-forming material by weight. The filler for removing nitrogen from wastewater formed by the film-forming material can obviouslyimprove the removal rate of ammonia nitrogen and nitrate nitrogen in the wastewater and has strong ability of removing the nitrogen in the wastewater. Because the silicate which is the nanometer inorganic substance is adhered to the polyamide which is the organic substance, the strength of the film-forming material formed by the polyamide and the silicate is improved, and the breaking resistanceis strengthened, thus the film-forming material can not be broken when in use, and the nitrogen removing effect of the filler can not be affected.

Description

technical field [0001] 本发明涉及一种废水脱氮填料上的挂膜材料。 Background technique [0002] 目前我国近海岸海域水质污染严重,主要污染因子是氨氮,水体中氨氮主要来源于工业排放的含氮废水和生活污水,在废水或者污水处理中,现有的挂膜材料形成的填料,如软性填料和半软性填料形成的组合填料,一般都不是专门针对去除废水中的氨氮设计的,因此对废水中氨氮的去除能力较低,去除率不高。 Contents of the invention [0003] 本发明的目的是提供一种废水脱氮填料上聚酰胺类有机与无机杂化形成的挂膜材料,应用该材料可提高废水中氨氮的去除率。 [0004] 为达到上述目的,本发明采用的技术方案是:一种废水脱氮填料上的挂膜材料,该挂膜材料包括聚酰胺、粘结在所述聚酰胺上的纳米级硅酸盐类无机物质,所述纳米级硅酸盐类无机物质在所述挂膜材料中占的比例为1%-20%(重量百分比)。 [0005] 所述聚酰胺由环内酰胺或氨基酸或二元胺和二元酸的反应物聚合而成。 [0006] 所述的环内酰胺为丁内酰胺或己内酰胺。 [0007] 所述的二元胺为己二胺或对苯二胺,所述的二元酸为己二酸或对苯二甲酸。 [0008] 所述的氨基酸为7-氨基庚酸。 [0009] 所述纳米级硅酸盐类无机物质可选用硅藻土、蒙脱土、海泡石粉、沸石或高岭土中的一种或者其任意组合的混合物。 [0010] 下面将“背景技术”中的组合填料与应用本发明挂膜材料的填料进行实验对比,处理综合化工废水,表1为组合填料与聚酰胺有机与无机杂化填料的处理氨氮数据的对比,表2为组合填料与聚酰胺类有机与无机杂化填料处理硝态氮数据的对比,如下所示: [0011] Table 1 [0012] Influent ammonia nitrogen concentration (mg / l) 33 46 57.5 62.5 64 70 Combined packing out of water NH...

AI Technical Summary

Problems solved by technology

[0002] At present, the water quality in my country's coastal waters is seriously polluted, and the main pollution factor is ammonia nitrogen. The ammonia nitrogen in the water mainly comes from the nitrogen-containing wastewater discharged from industry and domestic sewage. In wastewater or sewage treatment, the filler formed by the existing film-hanging materials, such as The combined fillers formed by permanent fillers and semi-soft fillers are generally not specially designed for the removal of ammonia nitrogen in wastewater, so the removal ability of ammonia nitrogen in wastewater is low and the removal rate is not high