pfas

PFAS system programmed by author has the character of high visualization , intelligence and accurately simulation , and has deep academic research and practical application value .

本文开发的PFAS系统具备了高度可视化、智能化和精确仿真的特点，具有一定的学术研究价值和实际应用价值。

The results suggested that the biotic degradation of PFAS precursors is an important source of PFCAs and PFSAs in the environment .

研究结果说明全氟前体物质的降解是环境中的PFSAs和PFCAs一个重要来源。

By using the scrap iron , waste sulfuric acid and aluminum wastes as raw materials , the poly-ferric aluminum sulfate ( PFAS ) is prepared under different conditions .

以废铁屑、废硫酸和铝质易拉罐废料为原料，制备了聚合硫酸铁铝（PFAS），研究了投加量和pH对PFAS混凝效果的影响。

A new process of preparing poly-ferric aluminum sulfate ( PFAS ) coagulant of inorganic composite polymer is designed by using pyrite residual , sulphuric acid and a little aluminum hydroxide as raw materials .

以硫铁矿烧渣、硫酸为主要原料，添加适量氢氧化铝，设计出一条新的工艺流程制备无机复合高分子混凝剂&聚合硫酸铁铝（PFAS），并对其混凝性能进行研究。

After the flocculation of wastewater being acidified and neutralized and 0.4 % of poly aluminum ferric sulphate ( PFAS ), the removal rate of COD can reach above 50 % and the chroma decreases four times .

经酸析、中和工艺处理后的废水与0.4%的聚合硫酸铝铁进行混凝处理后，废水的COD单元去除率仍可达50%以上，色度降低了4倍。

PFASs are released into the environment during the production , application , transport and disposal of PFAS containing products or by degradation of their precursors , and they are ubiquitous in environmental matrices such as air , water , soil and sewage sludge .

含有PFASs及其前体化合物的产品在生产、应用、运输和处置过程中会释放到环境介质大气、水、土壤和沉积物中。