CN114230096A - 一种新式污水异味治理方法 - Google Patents
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Abstract
本发明公开了一种新式污水异味治理方法,具体治理方法包含以下步骤:碱洗,主要利用酸碱中和原理,对污水中的硫化氢进行预处理,由于氨气极易溶于水,因此可以除去一部分氨气;分离污水和臭气,将污水和臭气分离,臭气通过收集罩收集;污水进入生物滤池处理,采用生物滤池中特定的生物细菌去除污水中氨气和硫化氢气体;通过收集罩收集的臭气主要包含硫化氢和氨气,利用改性吸附材料进行分解硫化氢和氨气;将经过生物滤池处理的污水进行活性炭吸附,主要利用活性炭的多孔性质,吸附污水中的VOC。用多级组合治理工艺,不同工艺针对不同的臭气污染物有着不同的去除效果。治理后的臭气浓度大大降低。
Description
技术领域
本发明涉及污水治理方法,具体涉及一种新式污水异味治理方法。
背景技术
随着人们生活水平的提高,人们对周围的生活环境要求越来越高,特别是周边空气质量。生活污水和工业污水处理过程中会产生大量的异味气体,严重影响了人们的生活质量。本发明主要针对异味气体的治理,提出了一种新的解决方案,属于“三废”治理废气治理技术领域的一个分支-臭气治理技术。
生活污水中的硫化氢、氨气浓度较高,VOC浓度较低,工业污水中的硫化氢、氨气和VOC浓度都较高,针对不同的污水产生的臭气,现有的治理技术主要有碱洗、碱洗+UV光催化、碱洗+活性炭吸附、碱洗+生物滤池等。目前的治理技术存在的不足之处有几个方面:1、治理工艺单一,对臭气去除效率较低;2、一级或二级治理工艺,无法满足浓度波动较大的臭气治理需求;3、复杂的工业污水产生的臭气难以达到较好的治理效果。
发明内容
本发明的目的在于提供一种新式污水异味治理方法,以解决上述背景技术问题。
为实现上述目的,本发明提供如下技术方案:一种新式污水异味治理方法包含以下步骤:具体治理方法包含以下步骤:步骤一、碱洗,主要利用酸碱中和原理,对污水中的硫化氢进行预处理,由于氨气极易溶于水,因此可以除去一部分氨气;
步骤二、分离污水和臭气,将污水和臭气分离,臭气通过收集罩收集;污水进入生物滤池处理,采用生物滤池中特定的生物细菌去除污水中氨气和硫化氢气体;
步骤三、通过收集罩收集的臭气主要包含硫化氢和氨气,利用改性吸附材料进行分解硫化氢和氨气;
步骤四、将经过生物滤池处理的污水进行活性炭吸附,主要利用活性炭的多孔性质,吸附污水中的VOC。
所述的步骤二中生物滤池分为好氧池和厌氧池,首先将污水通过输送泵泵入好氧池利用硝化细菌和亚硝化细菌在有氧的条件下,将水中的溶解的氨气氧化成硝酸根离子去除氨气;其中所述好氧池内部溶解氧含量为2-3mg/L;
接着污水被输送泵泵入厌氧池,厌氧池内有硫细菌,此时硫细菌将水中溶解的硫化氢氧化成单体硫沉淀去除水中溶解的硫化氢气体。
所述的步骤三中改性吸附材料的制备方法为:将硝酸铝与硝酸铁按照1:3质量比搅拌混合并研磨分散,收集混合物并分别称量去离子水5份、混合物1份、环己烷0.5份、正丁醇1份和聚乙二醇1份置于反应釜,搅拌混合并调节pH至8-8.5,静置后,收集的混合液并保温反应,趁热过滤并收集滤饼为吸附材料。
与现有技术相比,本发明的有益效果是:采用多级组合治理工艺,不同工艺针对不同的臭气污染物有着不同的去除效果。治理后的臭气浓度大大降低。
附图说明
图1为本发明的流程结构示意图。
具体实施方式
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
实施例:
一种新式污水异味治理方法包含以下步骤:具体治理方法包含以下步骤:
步骤一、碱洗,主要利用酸碱中和原理,对污水中的硫化氢进行预处理,由于氨气极易溶于水,因此可以除去一部分氨气;
步骤二、分离污水和臭气,将污水和臭气分离,臭气通过收集罩收集;污水进入生物滤池处理,采用生物滤池中特定的生物细菌去除污水中氨气和硫化氢气体;
步骤三、通过收集罩收集的臭气主要包含硫化氢和氨气,利用改性吸附材料进行分解硫化氢和氨气;
步骤四、将经过生物滤池处理的污水进行活性炭吸附,主要利用活性炭的多孔性质,吸附污水中的VOC。
所述的步骤二中生物滤池分为好氧池和厌氧池,首先将污水通过输送泵泵入好氧池利用硝化细菌和亚硝化细菌在有氧的条件下,将水中的溶解的氨气氧化成硝酸根离子去除氨气;其中所述好氧池内部溶解氧含量为2-3mg/L;
接着污水被输送泵泵入厌氧池,厌氧池内有硫细菌,此时硫细菌将水中溶解的硫化氢氧化成单体硫沉淀去除水中溶解的硫化氢气体。
所述的步骤三中改性吸附材料的制备方法为:将硝酸铝与硝酸铁按照1:3质量比搅拌混合并研磨分散,收集混合物并分别称量去离子水5份、混合物1份、环己烷0.5份、正丁醇1份和聚乙二醇1份置于反应釜,搅拌混合并调节pH至8-8.5,静置后,收集的混合液并保温反应,趁热过滤并收集滤饼为吸附材料。
对本发明提供的实施例进行试验考察,通过本实施例的方法进行处理工业污水,首先检测污水中硫化氢、氨气和VOC浓度。
且实施例1对制药厂污水和实施例2纺织厂的污水进行实验考察,其中实施例1和实施例2污水治理前物理指标和治理后物理指标如表1所示。
表1考察结果
由此可验证经过本新式污水异味治理方法治理的污水能够使硫化氢含量、氨气含量和VOC含量大幅度下降,达到排放标准。
本说明书中未作详细描述的内容属于本领域专业技术人员公知的现有技术。尽管参照前述实施例对本发明进行了详细的说明,对于本领域的技术人员来说,其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (3)
1.一种新式污水异味治理方法,其特征在于,具体治理方法包含以下步骤:步骤一、碱洗,主要利用酸碱中和原理,对污水中的硫化氢进行预处理,由于氨气极易溶于水,因此可以除去一部分氨气;
步骤二、分离污水和臭气,将污水和臭气分离,臭气通过收集罩收集;污水进入生物滤池处理,采用生物滤池中特定的生物细菌去除污水中氨气和硫化氢气体;
步骤三、通过收集罩收集的臭气主要包含硫化氢和氨气,利用改性吸附材料进行分解硫化氢和氨气;
步骤四、将经过生物滤池处理的污水进行活性炭吸附,主要利用活性炭的多孔性质,吸附污水中的VOC。
2.根据权利要求1所述的一种新式污水异味治理方法,其特征在于,所述的步骤二中生物滤池分为好氧池和厌氧池,首先将污水通过输送泵泵入好氧池利用硝化细菌和亚硝化细菌在有氧的条件下,将水中的溶解的氨气氧化成硝酸根离子去除氨气;其中所述好氧池内部溶解氧含量为2-3mg/L;
接着污水被输送泵泵入厌氧池,厌氧池内有硫细菌,此时硫细菌将水中溶解的硫化氢氧化成单体硫沉淀去除水中溶解的硫化氢气体。
3.根据权利要求1所述的一种新式污水异味治理方法,其特征在于,所述的步骤三中改性吸附材料的制备方法为:将硝酸铝与硝酸铁按照1:3质量比搅拌混合并研磨分散,收集混合物并分别称量去离子水5份、混合物1份、环己烷0.5份、正丁醇1份和聚乙二醇1份置于反应釜,搅拌混合并调节pH至8-8.5,静置后,收集的混合液并保温反应,趁热过滤并收集滤饼为吸附材料。
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