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2021-04-28
城市污水厂臭气处理设备
对于一个污水处理厂,只要存在厌氧条件,就会有引起人们抱怨、危害人们健康的恶臭气体产生。污水处理中产生的恶臭成分是蛋白质、脂肪、碳水化合物被微生物呼吸或发酵所形成的产物和不完全产物。
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城市污水厂臭气处理设备
Date﹕2021-04-28|Source:Eclear Environmental

对于一个污水处理厂,只要存在厌氧条件,就会有引起人们抱怨、危害人们健康的恶臭气体产生。污水处理中产生的恶臭成分是蛋白质、脂肪、碳水化合物被微生物呼吸或发酵所形成的产物和不完全产物。根据臭气物质的化学组成,可将其分为4类:第1类是含硫化合物,如硫化氢、硫醇、硫醚以及噻吩等;第2类是含氮化合物,如氨、胺、酰胺以及吲哚等;第3类是烃类化合物,如烷烃、烯烃、炔烃以及芳香烃等;第4类是含氧有机物,如醇、醛、酮、酚以及有机酸等,这些物质在污水生物处理设备中广泛存在。

城市污水厂臭气处理设备

在污水处理系统中,主要产生污染源的地方是进水格栅、曝气沉砂池、生化(曝气)池及污泥处理等工序段。污水处理过程中,污水中的溶解氧很低或为零时,污水中的细菌会将硫酸盐或硝酸盐作为它们的氧源,随后将硫酸盐还原成亚硫酸盐和硫化物,进而产生硫化氢气体,伴随着一定的硫醇和含硫气态化合物。污水中的固体颗粒经过厌氧消化和好氧消化而产生大量的氨气。在通常pH值条件下,氨气在水中的溶解度很大,当pH值升高时,氨气变得容易挥发,在使用苛性碱作为调节剂的污泥处理过程中产生的恶臭中氨气的浓度通常很高。同时在污水处理的发酵过程中,会产生一系列的低分子量有机物,如挥发性脂肪酸(VFAs),包括丁酸、乙酸和丙酸。在氧气浓度低或为零且pH值较低的地方,挥发性脂肪酸的产生量较大,但是厌氧消化过程能破坏VFAs故在消化污泥废气中的浓度不高。综上所述,在污水处理工程中会产生大量的硫化氢、氨气、甲硫醇、挥发性脂肪酸(VFAs)等致臭物质。

城市污水厂臭气处理设备

上海羿清环保是一家专注于生物除臭的环保公司,其生产的生物滤池臭气处理设备能够有效处理臭气,而且不会产生二次污染,受到业内人士的广泛赞誉。

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