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自然界广泛存在着以有机物为主的工业废水,但也广泛存在着能高效率分解有机废水的微生物,因而处理这样的废水是较容易的。另一方面,化学物质多是人工制造的,自然界能分解这些化学物质的微生物不多,分布也不广,因此很难发现它。鉴于化学物质种类繁多,又多对微生物有毒,而且化学物质的种类和分解它的微生物的组合很严,因而由微生物分解、
There are a wide range of industrial wastewaters that are dominated by organic substances in nature, but there are also microorganisms that efficiently decompose organic wastewaters. Therefore, it is easier to treat such wastewaters. On the other hand, chemical substances are mostly made by hand and naturally, the microorganisms that can decompose these chemicals are few and are not widely distributed, so it is hard to find out. In view of the wide range of chemical substances, many more toxic to microorganisms, and the combination of chemical species and the microorganisms that decompose it are very strict, and thus are decomposed by microorganisms,