The organic contaminants including pesticides, dyes and antibiotics imperilled both environment and creatures, thus hampering the sustainable and healthy development of human society. Loose nanofiltration (NF) is a highly efficient separation process aiming at removing organic contaminates from water. Previously, we developed a kind of cost-effective multi-functional bio-coatings. Herein, we investigated the effects of fabrication conditions on separation performance of the loose membranes with the bio-coating as the effective selective layer. Operation conditions including flow-rate of feed solutions, temperature, operating pressure to obtain optimum separation performance were examined in detail for imitating the industrial separation conditions. The membrane fabricated by 9.0 hours coating in 100 ml pH=8.5 solutions containing 0.2 g of gallic acid (GA) and 0.3 g of branched polyethyleneimine (PEI) demonstrates high rejections to both dyes (97% for CV and 100% for RB) and antibiotics (96.7% for AH) under 5.0 bar operation pressure with flow rate of feed solution at 70 L h⁻¹ at 25 °C,. Interestingly, the membrane demonstrates stable solution flux as high as 35 L m⁻² h⁻¹ under 5.0 bar operation pressure in continuous operation mode for separations of three typical antibiotics, and shows intriguing promise in recovery of antibiotics and dyes and waste water treatment containing organic contaminants.

包括农药，染料和抗生素在内的有机污染物既危害环境，也危害生物，从而阻碍了人类社会的可持续健康发展。松散的纳滤（NF）是一种高效的分离过程，旨在从水中去除有机污染物。以前，我们开发了一种经济高效的多功能生物涂料。在这里，我们调查了制造条件对以生物涂层为有效选择层的疏松膜分离性能的影响。为了模拟工业分离条件，详细研究了包括进料溶液的流速，温度，操作压力以获得最佳分离性能的操作条件。通过在100 ml的pH = 8.5含0溶液中涂覆9.0小时制成的膜。^-1在25°C ,. 有趣的是，该膜在连续操作模式下在5.0 bar操作压力下显示出高达35 L m ^-2 h ^-1的稳定溶液通量，用于分离三种典型的抗生素，并显示出在回收抗生素和染料以及废水处理中的诱人前景。有机污染物。