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2021-12-09
污水站除臭的工艺有什么?
污水站除臭已经成为现在不得不面对的问题,很多时候,走在一些大街小巷都会闻到一些不知名的异味,严重影响着大家的心情,所以,污水除臭也必须使用更适合的设备,从而达到更好的除臭效果。
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污水站除臭的工艺有什么?
Date﹕2021-12-09|Source:Eclear Environmental

污水站除臭已经成为现在不得不面对的问题,很多时候,走在一些大街小巷都会闻到一些不知名的异味,严重影响着大家的心情,所以,污水除臭也必须使用更适合的设备,从而达到更好的除臭效果。

随着全国各地排水设施的建设和发展,在污水收集,转输,处理过程中,恶臭气体大量产生,影响环境.已建或新建的城市污水处理厂周围往往都有人口密集的居民生活区或公共活动区,但多数已建污水处理厂没有除臭措施或除臭设施不完善,建设污水处理厂的除臭系统势在必行 

污水处理厂臭气来源

污水处理过程的臭气产生源主要分为污水处理系统和污泥处理系统。研究表明,城市污水处理厂的恶臭源主要分布在进水预处理区(进水泵房、格栅、沉砂池和厌氧水解池)以及生物反应中的厌氧调节池和污泥处理部分(浓缩池、储泥池和脱水间等)

除臭工艺的选择

除臭工艺方法可以分为吸收吸附法和燃烧法两大类,常见的方法有化学除臭法、活性炭吸附除臭法、氧离子基团除臭法、燃烧除臭法、纯天然植物提取液喷洒除臭法和生物除臭法等。

1.植物液气相反应法

该除臭法的原理是将纯天然植物提取液雾化,让雾化后的分子均匀地分散在空气中,吸附空气中的异味分子,与异味分子发生分散、聚合、取代、置换和合成等化学反应或催化与空气中的氧气反应,使异味分子发生变化,改变原有的分子结构,使之失去臭味。反应的最后产物为H2O、氧和氮等无害的分子。

 污水除臭

2.化学除臭法

化学除臭法是利用化学介质(NaOHNaClNaClO)H2SNH3等无机类致臭成分进行反应,从而达到除臭的目的。该法对H2SNH3等的吸收比较彻底,速度快,但对硫醇、挥发性脂肪酸或其他挥发性有机化合物的去除比较困难,不能保证完全消除异味。

3.活性炭吸附除臭法

活性炭吸附除臭法是利用活性炭能吸附臭气中致臭物质的特点,在吸附塔内设置各种不同性质的活性炭,致臭物质和各种活性炭接触后,排出吸附塔,达到脱臭的目的。活性炭达到饱和后,需通过热空气、蒸汽或NaOH浸没进行再生或替换。活性炭的再生与替换价格较昂贵、劳动强度大且再生后的活性炭吸附能力降低。

4.氧离子基团除臭法

氧离子基团除臭法是利用高压静电装置,在新风补给空气中产生氧离子基团,在常温常压下将恶臭物质分解成CO2H2OH2SO4或是部分氧化的化合物的方法。

5.燃烧除臭法

燃烧除臭法有直接燃烧法和触煤燃烧法。根据恶臭物质的特点,在控制一定的温度和接触时间的条件下,臭气直接燃烧,达到脱臭的目的。

6.生物除臭法

生物除臭法是通过微生物的生理代谢将恶臭物质加以转化,达到除臭的目的。目前多采用生物滤池法。生物滤池法是把收集的臭气先经过加湿处理,再通过长满微生物的、湿润多孔的生物滤层,利用微生物细胞对恶臭物质的吸附、吸收和降解功能以及微生物细胞个体小、表面积大、吸附性强和代谢类型多样的特点,将恶臭物质吸附后分解成CO2和其他无机物。

不用的除臭方法有着不同的除臭原理,希望能够帮助大家更好的进行污水的除臭。

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