[ Objective ] The study aimed at treating wastewater treatment plant （WWTP） effluent by using bio-film reactor with filamentous bamboo as bio-carrier. [ Method] With the aid of a continuous flow reactor, a bio-film ...[ Objective ] The study aimed at treating wastewater treatment plant （WWTP） effluent by using bio-film reactor with filamentous bamboo as bio-carrier. [ Method] With the aid of a continuous flow reactor, a bio-film reactor using filamentous bamboo as bio-carrier was used to treat WWTP effluent with low C/N ratio, and the removal effects of CODc,, TN （total nitrogen）, and NO3--N in the wastewater were analyzed.[ Result ] The average removal rates of CODcr, TN, and NO3- -N reached 47.7%, 23.6% and 34.5% when the C/N ratio of influent was around 2. In addi- tion, a stable bio-film was formed very well in the secondary effluent with low C/N ratio and hardly degradable organic pollutants. The pollutants could be removed effectively because of the excellent surface characteristics and compositions of filamentous bamboo. [ Conclusion] The research provides a new method to treat WWTP effluent with low C/N ratio.展开更多
Microplastic pollution has become a worldwide issue.The discharge of sewage treatment plants(STPs)or wastewater treatment plant(WWTPs)is an important way for microplastics to enter the environment.This study reviewed ...Microplastic pollution has become a worldwide issue.The discharge of sewage treatment plants(STPs)or wastewater treatment plant(WWTPs)is an important way for microplastics to enter the environment.This study reviewed the sources and occurrence characteristics(type,size,color and components)of microplastics in domestic and foreign sewage plants.It elaborated the removal principles of microplastics by primary,secondary and tertiary treatments.In addition,the removal effects of various treatment units and different processes on microplastics were summarized.In the future,the removal mechanism of microplastics in sewage treatment plants should be discussed in more depth,so as to further improve the removal rate of microplastics by optimizing and transforming traditional sewage treatment processes.Therefore,it is necessary to develop new technologies/processes specifically for the removal of microplastics and promote them to practical applications.展开更多
In Wuxi Wastewater Treatment Plant, the Anaerobic, anoxic and oxic (A2/O) process was employed to remove the nitrogen and phosphorus, which exhibited the positive results of the high removal efficiency for phosphorus ...In Wuxi Wastewater Treatment Plant, the Anaerobic, anoxic and oxic (A2/O) process was employed to remove the nitrogen and phosphorus, which exhibited the positive results of the high removal efficiency for phosphorus with a range of 67.7% to 89.9% and an average value of 78.0. The effluent of phosphorus met the national discharge standard. The removal of TN was effected by both BOD variation of influent and wastewater temperature. TN removal was in the range of 28.5% to 55.8% with an average value of 39.4%. The energy cost was 0.15 kWh(m3d)-1 or 1.35 kWh(kgBOD@d)-1. The annual average sludge production was 46.3 m3d-1, the annual average dosage for the dewatering was 40 kg d-1 .展开更多
2020年,随着上海市白龙港污水处理厂污泥处理处置二期工程建成投运,白龙港厂污泥处理系统的处理规模达486 t DS/d,为国内乃至亚洲最大的城镇污泥“厌氧消化+干化焚烧”处理系统,厌氧消化和干化焚烧工艺相结合的污泥处理路线并大规模工...2020年,随着上海市白龙港污水处理厂污泥处理处置二期工程建成投运,白龙港厂污泥处理系统的处理规模达486 t DS/d,为国内乃至亚洲最大的城镇污泥“厌氧消化+干化焚烧”处理系统,厌氧消化和干化焚烧工艺相结合的污泥处理路线并大规模工程应用在国内尚属首次。文章结合污泥厌氧消化系统大修停运前后,对该污泥处理系统中脱水、干化、焚烧运行情况的影响进行了分析比对,包括污泥性质、处理量、运行成本等方面。结果表明,对于该系统而言,污泥厌氧消化工艺有利于污泥干化焚烧的经济、稳定运行,对污泥处理系统碳减排、碳中和具有非常重要的作用,符合绿色、循环、低碳、生态的要求。展开更多
基金Supported by the Scientific Research Foundation for Postgraduates of ZhengZhou University (A1003) Open Foundation of Provincial Key Laboratory of Environmental Material and Environmental Engineering (K11027)
文摘[ Objective ] The study aimed at treating wastewater treatment plant （WWTP） effluent by using bio-film reactor with filamentous bamboo as bio-carrier. [ Method] With the aid of a continuous flow reactor, a bio-film reactor using filamentous bamboo as bio-carrier was used to treat WWTP effluent with low C/N ratio, and the removal effects of CODc,, TN （total nitrogen）, and NO3--N in the wastewater were analyzed.[ Result ] The average removal rates of CODcr, TN, and NO3- -N reached 47.7%, 23.6% and 34.5% when the C/N ratio of influent was around 2. In addi- tion, a stable bio-film was formed very well in the secondary effluent with low C/N ratio and hardly degradable organic pollutants. The pollutants could be removed effectively because of the excellent surface characteristics and compositions of filamentous bamboo. [ Conclusion] The research provides a new method to treat WWTP effluent with low C/N ratio.
基金Supported by Project of National Natural Science Foundation of China(42007317)Project of Guangdong Basic and Applied Basic Research Foundation(2019A1515110272)+1 种基金Outstanding Young Teachers'Scientific Research Ability Improvement Program Funding Project of Zhaoqing University(YQ202105)Innovation and Entrepreneurship Training Program for College Students(202210580015).
文摘Microplastic pollution has become a worldwide issue.The discharge of sewage treatment plants(STPs)or wastewater treatment plant(WWTPs)is an important way for microplastics to enter the environment.This study reviewed the sources and occurrence characteristics(type,size,color and components)of microplastics in domestic and foreign sewage plants.It elaborated the removal principles of microplastics by primary,secondary and tertiary treatments.In addition,the removal effects of various treatment units and different processes on microplastics were summarized.In the future,the removal mechanism of microplastics in sewage treatment plants should be discussed in more depth,so as to further improve the removal rate of microplastics by optimizing and transforming traditional sewage treatment processes.Therefore,it is necessary to develop new technologies/processes specifically for the removal of microplastics and promote them to practical applications.
文摘In Wuxi Wastewater Treatment Plant, the Anaerobic, anoxic and oxic (A2/O) process was employed to remove the nitrogen and phosphorus, which exhibited the positive results of the high removal efficiency for phosphorus with a range of 67.7% to 89.9% and an average value of 78.0. The effluent of phosphorus met the national discharge standard. The removal of TN was effected by both BOD variation of influent and wastewater temperature. TN removal was in the range of 28.5% to 55.8% with an average value of 39.4%. The energy cost was 0.15 kWh(m3d)-1 or 1.35 kWh(kgBOD@d)-1. The annual average sludge production was 46.3 m3d-1, the annual average dosage for the dewatering was 40 kg d-1 .
文摘2020年,随着上海市白龙港污水处理厂污泥处理处置二期工程建成投运,白龙港厂污泥处理系统的处理规模达486 t DS/d,为国内乃至亚洲最大的城镇污泥“厌氧消化+干化焚烧”处理系统,厌氧消化和干化焚烧工艺相结合的污泥处理路线并大规模工程应用在国内尚属首次。文章结合污泥厌氧消化系统大修停运前后,对该污泥处理系统中脱水、干化、焚烧运行情况的影响进行了分析比对,包括污泥性质、处理量、运行成本等方面。结果表明,对于该系统而言,污泥厌氧消化工艺有利于污泥干化焚烧的经济、稳定运行,对污泥处理系统碳减排、碳中和具有非常重要的作用,符合绿色、循环、低碳、生态的要求。
