过滤器中放鹅卵石有什么作用?

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2025-03-29 18:35:28
推荐回答(5个)
回答1:

石英砂由于有粗砂细砂,一般来说粗砂放下层,细砂放上层,鹅暖石放在最底层,鹅暖石的作用就是对石英砂起到一个支撑作用,防止石英砂被水流冲走。

多介质过滤器装填石英砂技术要求

1、石英砂滤料的破碎率和磨损率之和不应大于1.5%(百分率按质量计,下同)。

2、石英砂滤料的密度不应小于2.55g/cm3。使用中对平均密度有特殊要求者除外。

3、石英砂滤料应不含可见泥土、云母和有机杂质,滤料的水浸出液应不含有毒物质。含泥量不应大于1%。密度大于2g/cm3的轻物质的含量不应大于0.2%。

4、石英砂滤料的灼烧减量不应大于0.7%。

5、石英砂滤料的盐酸可溶率不应大于3.5%。

6、石英砂滤料的粒径

7、单层或双层滤料滤池的石英砂滤料粒径范围,一般为0.5~1.2mm。三层滤料滤池的石英砂滤料粒径范围,一般为0.5~0.8mm。

8、在各种粒径范围的石英砂滤料中,小于指定下限粒径的不应大于3%,大于指定上限粒径的不应大于2%。

9、石英砂滤料的有效粒径和不均匀系数,由使用者确定。

多介质过滤器填料粒径分布情况

多介质过滤器填料通常为石英砂,活性炭,无烟煤,磁铁矿等类型。双层滤料组合时,中间承托层一般使用鹅卵石作为支撑。三层滤料组合时,过滤器内的滤床设立单层滤料。

如果是无烟煤和石英砂组合,填料粒径分布情况由上到下是无烟煤——鹅卵石——石英砂

如果是无烟煤和活性炭组合,填料粒径分布情况由上到下是活性炭——鹅卵石——石英砂

如果是无烟煤,石英砂,磁铁矿组合,填料粒径分布情况由上到下是无烟煤——石英砂——磁铁矿

回答2:

多介质过滤器罐体内的滤料中的鹅卵石,是一种纯天然的石材。在经过山洪冲击、流水搬运过程中不断地挤压、摩擦,饱经浪打水冲的运动后,形成规格不同大小,形状各异,颜色不同的不规则石头。形状像鹅蛋,敲着声音很脆,主要化学成分是二氧化硅,外表光滑漂亮,色泽艳丽,表面光洁,耐磨度高,质地坚硬、不易损毁。主要用于电厂、鹅卵石滤料垫层、园林路面铺设等。

回答3:

鹅卵石(砾石)滤料,俗称承托层滤料或垫层滤料,分(天然)鹅卵石和(机械加工)石英砾石两种。
鹅卵石滤料具有很强的耐酸性和抗腐蚀性,主要化学成分是二氧化硅,其次含有少量的氧化铁和微量的锰、铜等元素及化合物。具有抗压、耐磨耐腐蚀的天然石特性,这个特性主要由SiO2的稳定性所呈现,可以认为是二氧化硅或硅石的特性。如果石英石子在化工污水处理滤池中结块将是很麻烦的事情,污水中多含有硅酸盐,它容易使石英砂板结。水处理专用天然鹅卵石滤料具有很强的耐酸性和抗腐蚀性,就不会有这种困扰。

回答4:

过滤粗的杂质

回答5:

就跟石英沙过滤器一个道理

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