生化池中污泥自溶怎么办?污水处理过程中产生假相Cod的原因?

2025-03-17 14:30:34
推荐回答(4个)
回答1:

污泥自溶原因一般都是曝气过度或负荷过低
假象COD有可能是污泥自溶导致COD上升;也有可能是部分原来不能被铬法或者锰法测出来的一部分有机物,经过生物或化学处理发生分解,变成可以被铬法或者锰法测定,从而表现出COD上升;还有一种可能是你用了一些化学方法,比如加了双氧水等物质,因COD本质上是测定水中能够争夺电子的物质的量,故这些物质也可能造成COD测定值偏高。

回答2:

好氧池出现污泥解体(自溶)、上清液细碎污泥多现象的原因?
1、 好氧池污泥负荷小,曝气过量,污泥自身氧化,污泥絮凝性变差,污泥结构松散(清澈,细碎泥多,COD不高)
2、 好氧池污泥负荷过大,污泥吸附性能变差,有机物未能完全分解掉,镜检污泥结构散(混浊,不透明,COD高)
3、 好氧池污泥排放量过大导致好氧池污泥龄过短(SVI值在70~120适宜,在此范围内二沉池细碎污泥少)
4、 好氧池进水含有有毒物质或者污泥老化,泥龄长(混浊,有细碎泥,COD偏高,镜检轮虫很多)
5、 好氧池营养料不足或者营养料比例不均衡(N、P偏低)
请按照以上的可能性逐步检测

回答3:

污泥自溶么一般都是曝气过度,负荷过低造成的,曝气过度么就减少曝气量,负荷低么就提高负荷
假相COD指的什么?亚硝酸盐,亚铁离子这类的玩意?

回答4:

污泥自溶是什么现象?是不是微生物的自我消解,可能是水中有机物浓度偏低或是其他原因。

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