CN114917748A - 一种臭气用光催化植物液联合处理工艺 - Google Patents
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Abstract
本发明提供一种臭气用光催化植物液联合处理工艺,包括如下步骤:第一步,将高温废气注入至降解房进行冷却降解;第二步,将第一步冷却降解后的废气引入生物降解房;第三步,将第二步生物降解后的废气引入活性炭吸附系统后外排。本发明的有益效果是:本发明操作简单、效率高,有效解决了病死畜禽化制废气不达标排放的问题。
Description
技术领域
本发明涉及废气处理技术领域,更具体地说涉及一种臭气用光催化植物液联合处理工艺。
背景技术
当养殖场中的畜禽非正常死亡后,需要及时对其进行消杀无害化处理。目前,常规的病死畜禽无害化处理工艺为高温化制法,但是,高温化制过程中特别是排压过程中会突然大量排气,致使常规的臭气处理设施如:酸碱洗涤+UV光解+生物降解来不及处理这股废气,导致现有废气处理设备不达标。因而,如何解决排压时大量废气的缓冲和处理,是该行业急需解决的技术难题。
发明内容
本发明克服了现有技术中的不足,提供了一种臭气用光催化植物液联合处理工艺。
本发明的目的通过下述技术方案予以实现。
一种臭气用光催化植物液联合处理工艺,包括如下工艺流程:
第一步,将高温废气注入至降解房进行冷却降解;
第二步,将第一步冷却降解后的废气引入生物降解房;
第三步,将第二步生物降解后的废气引入活性炭吸附系统后外排。
上述臭气用光催化植物液联合处理工艺,包括如下步骤:
(1)将82~123℃高温废气从降解房底部引入到设置多层椰丝的冷却层,控制废气流速为2~3m/s,冷却介质为10℃,废气经由冷却层上升至降解房上层后,控制废气流速为2~3m/s,紫外灯功率为20000~40000W,控制停留时间为5~12s,废气进入生物降解房;
(2)控制废气流速为2~3m/s,控制停留时间为5~10s,控制生物降解房温度为35℃,含生物菌营养液采用连续喷淋方式,以1L/h/m3喷施量喷施营养液,处理后废气引入至活性炭吸附系统;
(3)控制废气流速为2~3m/s,控制吸附和混合时间为2~5s,植物提取液采用连续喷淋方式,以2~5L/h/m3喷施量喷施植物提取液,处理后废气达标排放。
本发明的有益效果为:
(1)光催化降解使有机臭气组分分子量降低,同时可将还原性气体进行还原,更易于被微生物降解菌所吸收降解,同时,降解房中的多层椰丝结构可以很好的缓冲排压过程中突然产生的大量废气;
(2)微生物降解菌和植物提取液同时施用,一方面保障微生物降解菌的生存环境,避免有毒有害臭气组分对微生物降解菌的负面影响,另一方面进一步提高和保障了生物降解率;
(3)活性炭不仅具有臭气成分富集的作用,同时植物液提取液可将高浓度臭气成分进行生化降解,通过多级协同处理,保障了废气的达标排放。
具体实施方式
下面结合实施例对本发明的具体实施方式进行描述,以便更好的理解本发明。这些实施例仅用于说明本发明而不用于限制本发明的范围。下例实施例中未注明具体条件的实验方法,通常按照本领域常规条件或按照制造厂商建议的条件;所使用的原料、试剂等,如无特殊说明,均为可从常规市场等商业途径得到的原料和试剂。本领域的技术人员在本发明的基础上所做的任何非实质性的变化及替换均属于本发明所要求保护的范围。
实施例1
(1)将103℃高温废气从降解房底部引入到设置多层椰丝的冷却层,控制废气流速为2.6m/s,冷却介质为10℃,废气经由冷却层上升至降解房上层后,控制废气流速为2.6m/s,紫外灯功率为35000W,控制停留时间为8s,废气进入生物降解房;
(2)控制废气流速为2.6m/s,控制停留时间为8s,控制生物降解房温度为35℃,含生物菌营养液采用连续喷淋方式,以1L/h/m3喷施量喷施营养液,处理后废气引入至活性炭吸附系统;
(3)控制废气流速为2.6m/s,控制吸附和混合时间为3s,植物提取液采用连续喷淋方式,以3.5L/h/m3喷施量喷施植物提取液,处理后废气的氨含量为0.5mg/m3,硫化氢含量为0.01mg/m3排放。
实施例2
(1)将83℃高温废气从降解房底部引入到设置多层椰丝的冷却层,控制废气流速为2.9m/s,冷却介质为10℃,废气经由冷却层上升至降解房上层后,控制废气流速为2.9m/s,紫外灯功率为22000W,控制停留时间为6s,废气进入生物降解房;
(2)控制废气流速为2.9m/s,控制停留时间为6s,控制生物降解房温度为35℃,含生物菌营养液采用连续喷淋方式,以1L/h/m3喷施量喷施营养液,处理后废气引入至活性炭吸附系统;
(3)控制废气流速为2.9m/s,控制吸附和混合时间为3s,植物提取液采用连续喷淋方式,以2.1L/h/m3喷施量喷施植物提取液,处理后废气的氨含量为0.8mg/m3,硫化氢含量为0.03mg/m3排放。
实施例3
(1)将112℃高温废气从降解房底部引入到设置多层椰丝的冷却层,控制废气流速为2.1m/s,冷却介质为10℃,废气经由冷却层上升至降解房上层后,控制废气流速为2.1m/s,紫外灯功率为37000W,控制停留时间为10s,废气进入生物降解房;
(2)控制废气流速为2.1m/s,控制停留时间为9s,控制生物降解房温度为35℃,含生物菌营养液采用连续喷淋方式,以1L/h/m3喷施量喷施营养液,处理后废气引入至活性炭吸附系统;
(3)控制废气流速为2.1m/s,控制吸附和混合时间为4s,植物提取液采用连续喷淋方式,以4.5L/h/m3喷施量喷施植物提取液,处理后废气的氨含量为0.7mg/m3,硫化氢含量为0.02mg/m3排放。
以上对本发明的一个实施例进行了详细说明,但所述内容仅为本发明的较佳实施例,不能被认为用于限定本发明的实施范围。凡依本发明申请范围所作的均等变化与改进等,均应仍归属于本发明的专利涵盖范围之内。
Claims (8)
1.一种臭气用光催化植物液联合处理工艺,其特征在于:包括如下工艺流程:
第一步,将高温废气注入至降解房进行冷却降解;
第二步,将第一步冷却降解后的废气引入生物降解房;
第三步,将第二步生物降解后的废气引入活性炭吸附系统后外排。
2.根据权利要求1所述的臭气用光催化植物液联合处理工艺,其特征在于:所述第一步中的降解房内部为层状结构,层状结构分为两层,底部为冷却层,冷却介质采用喷雾方式喷洒在椰丝层,椰丝层厚度为2~3cm,层数不少于15层;上部为光催化降解层,椰丝层间距为0.3~1.5cm,层数不少于12层,每层上下设置防水紫外灯。
3.根据权利要求2所述的臭气用光催化植物液联合处理工艺,其特征在于:所述光催化剂为5.1%Pt/Co0.03Ni0.15Ti0.41Fe0.21O1.38/硅藻土,紫外灯功率为20000~40000W。
4.根据权利要求1所述的臭气用光催化植物液联合处理工艺,其特征在于:所述第二步中的生物降解房内部为层状蓬松结构,含生物菌营养液采用喷雾方式喷洒在椰丝层,雾化雾滴尺寸为1~5mm;椰丝层厚度为0.3~0.6cm,层数不少于30层,气体流速控制在1.2~1.8m/s。
5.根据权利要求4所述的臭气用光催化植物液联合处理工艺,其特征在于:所述含生物菌营养液中含有植物提取液,植物提取液含量为0.02%~0.1%。
6.根据权利要求5所述的臭气用光催化植物液联合处理工艺,其特征在于:所述植物提取液无毒无害且具有优异的除臭效果。
7.根据权利要求1所述的臭气用光催化植物液联合处理工艺,其特征在于:所述第三步中的生物降解房内部为层状结构,植物提取液采用喷雾方式喷洒在活性炭层,活性炭层厚度为1~3cm,层数不少于25层。
8.根据权利要求1~7所述的臭气用光催化植物液联合处理工艺,其特征在于:所述废气处理步骤如下:
(1)将82~123℃高温废气从降解房底部引入到设置多层椰丝的冷却层,控制废气流速为2~3m/s,冷却介质为10℃,废气经由冷却层上升至降解房上层后,控制废气流速为2~3m/s,紫外灯功率为20000~40000W,控制停留时间为5~12s,废气进入生物降解房;
(2)控制废气流速为2~3m/s,控制停留时间为5~10s,控制生物降解房温度为35℃,含生物菌营养液采用连续喷淋方式,以1L/h/m3喷施量喷施营养液,处理后废气引入至活性炭吸附系统;
(3)控制废气流速为2~3m/s,控制吸附和混合时间为2~5s,植物提取液采用连续喷淋方式,以2~5L/h/m3喷施量喷施植物提取液,处理后废气达标排放。
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