In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrification
In order to solve the problem of high concentration of free ammonia(FA) inhibiting ammonia oxidizing bacteria and causing high concentration of ammonia nitrogen wastewater to be unable biologically treated, natural zeolite was used to alleviate the inhibitory effect of FA. Natural clinoptilolite was...
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Editorial Office of Industrial Water Treatment
2024-10-01
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| Series: | Gongye shui chuli |
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| Online Access: | https://www.iwt.cn/CN/10.19965/j.cnki.iwt.2023-0978 |
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| author | CHEN Xu YANG Xiaofan WANG Chenggang KUANG Naiqiang CHEN Chunfu ZHANG Liqiu |
| author_facet | CHEN Xu YANG Xiaofan WANG Chenggang KUANG Naiqiang CHEN Chunfu ZHANG Liqiu |
| author_sort | CHEN Xu |
| collection | DOAJ |
| description | In order to solve the problem of high concentration of free ammonia(FA) inhibiting ammonia oxidizing bacteria and causing high concentration of ammonia nitrogen wastewater to be unable biologically treated, natural zeolite was used to alleviate the inhibitory effect of FA. Natural clinoptilolite was added to SBR for partial nitrification treatment of copper-ammonia wastewater with ammonia-nitrogen of 210 mg/L. On the 86th day of operation, the reactor achieved 98.5% of ammonia-nitrogen removal rate at load of 1.105 kg/(m3·d). In-situ biological regeneration during the reaction process ensured the continuous enhancement effect of natural zeolite, with zeolite regeneration rates of 99.0% to 106.3%. Through the analysis of extracellular polymeric substance(EPS) content and composition of sludge, it was found that the increase of influent ammonia-nitrogen led to the increase of EPS content, and protein mass fraction in EPS was increased under the stress of copper ion, which promoted the formation of sludge granulation. High throughput sequencing results showed that Nitrosomonas was the main ammonia-oxidizing functional bacterium genus, with relative abundance varied from 10.3% to 51.7%. Comamonas rapidly increased in the presence of high concentration of ammonia-nitrogen, with relative abundance increasing from 0.6% on the 22nd day to 29.9% on the 86th day. The partial nitrification was strengthened by natural zeolite to realize stable and high-efficient treatment of copper-ammonia wastewater. |
| format | Article |
| id | doaj-art-0e4a72fd99ff417fb49bf70bfe1b793d |
| institution | Kabale University |
| issn | 1005-829X |
| language | zho |
| publishDate | 2024-10-01 |
| publisher | Editorial Office of Industrial Water Treatment |
| record_format | Article |
| series | Gongye shui chuli |
| spelling | doaj-art-0e4a72fd99ff417fb49bf70bfe1b793d2024-12-10T03:01:18ZzhoEditorial Office of Industrial Water TreatmentGongye shui chuli1005-829X2024-10-01441016517310.19965/j.cnki.iwt.2023-09781005-829X（2024）10-0165-09In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrificationCHEN Xu0YANG Xiaofan1WANG Chenggang2KUANG Naiqiang3CHEN Chunfu4ZHANG Liqiu5Guangdong Xinzhanye Environmental Technology Co., Ltd., Jiangmen 529000, ChinaSchool of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaJiangmen Yamen New Fortune Environmental Protection Industry Co., Ltd., Jiangmen 525100, ChinaGuangdong Xinzhanye Environmental Technology Co., Ltd., Jiangmen 529000, ChinaGuangdong Xinzhanye Environmental Technology Co., Ltd., Jiangmen 529000, ChinaSchool of Civil Engineering, Guangzhou University, Guangzhou 510006, ChinaIn order to solve the problem of high concentration of free ammonia(FA) inhibiting ammonia oxidizing bacteria and causing high concentration of ammonia nitrogen wastewater to be unable biologically treated, natural zeolite was used to alleviate the inhibitory effect of FA. Natural clinoptilolite was added to SBR for partial nitrification treatment of copper-ammonia wastewater with ammonia-nitrogen of 210 mg/L. On the 86th day of operation, the reactor achieved 98.5% of ammonia-nitrogen removal rate at load of 1.105 kg/(m3·d). In-situ biological regeneration during the reaction process ensured the continuous enhancement effect of natural zeolite, with zeolite regeneration rates of 99.0% to 106.3%. Through the analysis of extracellular polymeric substance(EPS) content and composition of sludge, it was found that the increase of influent ammonia-nitrogen led to the increase of EPS content, and protein mass fraction in EPS was increased under the stress of copper ion, which promoted the formation of sludge granulation. High throughput sequencing results showed that Nitrosomonas was the main ammonia-oxidizing functional bacterium genus, with relative abundance varied from 10.3% to 51.7%. Comamonas rapidly increased in the presence of high concentration of ammonia-nitrogen, with relative abundance increasing from 0.6% on the 22nd day to 29.9% on the 86th day. The partial nitrification was strengthened by natural zeolite to realize stable and high-efficient treatment of copper-ammonia wastewater.https://www.iwt.cn/CN/10.19965/j.cnki.iwt.2023-0978partial nitrificationzeolite regenerationhigh concentration ammonia-nitrogenfree ammonia inhibitioncopper-ammonia wastewater |
| spellingShingle | CHEN Xu YANG Xiaofan WANG Chenggang KUANG Naiqiang CHEN Chunfu ZHANG Liqiu In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrification Gongye shui chuli partial nitrification zeolite regeneration high concentration ammonia-nitrogen free ammonia inhibition copper-ammonia wastewater |
| title | In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrification |
| title_full | In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrification |
| title_fullStr | In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrification |
| title_full_unstemmed | In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrification |
| title_short | In-situ biological regeneration of zeolite to enhance the treatment of high ammonia-nitrogen wastewater by partial nitrification |
| title_sort | in situ biological regeneration of zeolite to enhance the treatment of high ammonia nitrogen wastewater by partial nitrification |
| topic | partial nitrification zeolite regeneration high concentration ammonia-nitrogen free ammonia inhibition copper-ammonia wastewater |
| url | https://www.iwt.cn/CN/10.19965/j.cnki.iwt.2023-0978 |
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