聚氨酯泡沫的改性及其在臭气治理中的应用

通过将不同类型的纤维添加到聚氨酯原始配方中进行发泡，制得增强型聚氨酯泡沫，将其作为除臭微生物生长载体，用于生物除臭实验中。考察了不同类型的纤维的长度和数目对聚氨酯泡沫的压缩强度、抗湿热老化性能、保水率、挂膜量及其除臭效果的影响。结果表明：3 mm短玻璃纤维聚氨酯压缩性能、抗湿热老化性能和挂膜性能最佳，其挂膜干物质达到0.90 g；甘蔗纤维聚氨酯吸水性能和挂膜能力较优，但保水性能一般；木质纤维聚氨酯的吸水性能和保水率最优。以短玻璃纤维聚氨酯为生物滤塔填料进行实验，结果显示对高负荷区硫化氢和氨的平均去除率分别约为94%和77%，优于市售除臭填料，具有良好的生物除臭应用前景。

Polyurethane foam modification and its application for odor treatment

Polyurethane foam was prepared by adding different fibers into the polyurethane original formula for foaming, and it was used as carrier for deodorization microbial growth in the biological deodorization test. The effects of fiber length and number on the compression strength, hygrothermal aging resistance performance, water retention, biofilm amount and deodorization of polyurethane foam were studied. The results showed that polyurethane foam with 3 mm short glass fiber had the best performance on compression, hygrothermal aging resistance and biofilm hanging, and dry biofilm mass reached 0.90 g. Sugarcane fiber polyurethane had better water absorption performance and film hanging ability, but its water retention performance was general. Wood fiber polyurethane had the best water absorption and water retention performance. When polyurethane foam with short glass fiber was used as filler in a biological filtration tower, the average removal efficiencies of hydrogen sulfide and ammonia at high load zone were about 94% and 77%, respectively, which was better than the commercial deodorization filler, and has a good prospect of biological deodorization.