porous diffuser meaning in English

多孔扩散消声器

Bqq series corundum porous diffuser is a aeration device used in conventional , extended activated - sludge system for industrial and municipal wastewater treatment engineering
产品简介： bqq系列刚玉微孔曝气器适用于工业污水、市政污水处理工程中传统的、扩展的活性污泥处理工艺。
Results obtained from the test show that micro porous diffusers are superior to big porous diffuser in oxygen transfer performance index and oxygen adsorbent efficiency of the mixed liquor can be increased significantly
试验表明，中微孔曝气器的各种性能指标明显优于大孔曝气器，可显著提高混合液中氧的吸收率。