在加入少量藻酸钙盐的条件下，用硼酸交联聚乙烯醇（PVA），活性污泥培养物渗于其内，将其涂于载体上被固定成膜。
To add a little calcium alginate into boric acid cross-linkedpolyving akohol(PVA)and permeate active sludge culture into the mix, and at last apply the mix on carrier to make film.
该增稠 剂体系包括聚乙烯醇聚合物和含硼化合物如硼酸。
The thickener system incorporates a polyvinyl alcohol polymer and a boron containing compound such as boric acid.
该增稠 剂体系包括聚乙烯醇聚合物和含硼化合物如硼酸。
The thickener system incorporates a polyvinyl alcohol polymer and a boron containing compound such as boric acid.
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