厦门西海域水体的细菌动力学研究和环境容量评估
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摘要: 把通常用在废水生化处理的原理,引入海洋微生物生态研究,应用于环境容量评估.选择3个有关微生物生长和耗氧的动力学模型,通过现场调查和室内试验,确定动力学有关参数值进而估算环境容量.结果表明,若把海水BOD5控制在3mg·dm-3以下,则厦门西海域水体BOD5的毛容量为37t·d-1,现有生态系已经消耗毛容量的25%左右,故净容量为28t·d-1,即该海域每天可接纳相当于28tBOD5的生活污水.此外还发现,耗氧动力学常数K和体系的BOD5浓度呈正相关,海域的总细菌数TB和BOD5浓度的关系呈TB(108dm-3)=9.91×BOD5(mg·dm-3)+1.74(n=32,r=0.5441,p<0.01).
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