The Experts below are selected from a list of 558 Experts worldwide ranked by ideXlab platform
Yan Feng - One of the best experts on this subject based on the ideXlab platform.
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Performance of water Quenched Slag particles (WQSP) for municipal wastewater treatment in a biological aerated filter (BAF)
Biomass and Bioenergy, 2012Co-Authors: Yan Feng, Liping Qiu, Xin Wan, Lei ChenAbstract:Abstract Water Quenched Slag particles (WQSP) and haydite were applied to treat municipal wastewater in two lab-scale up-flow biological aerated filters (BAF) to compare their abilities to act as biofilm supports. The results showed that WQSP reactor brought a relative superiority to haydite reactor in terms of chemical oxygen demand (CODcr) and ammonia nitrogen (NH 3 -N) removal when hydraulic retention time (HRT) ranged from 1 h to 5 h.Compared with haydite, WQSP had higher total porosity, larger total surface area and lower bulk and apparent density. Tests of heavy metal elements in lixivium proved that WQSP were safe for wastewater treatment. In addition, the detection of the amount of hetero bacteria and nitrobacteria of two biological aerated filters in three HRTs also showed that WQSP medium was more suitable to the attached growth of nitrobacteria, which is helpful to the improvement of nitrification performance in WQSP BAF. Therefore, WQSP is a potential material for use as the filter media of BAF for wastewater treatment. WQSP application, as a novel process of treating wastes with waste, provides a promising way to use water Quenched Slag (WQS).
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Study on the Treatment of Domestic Sewage with Water Quenched Slag Biological Aerated Filter
Advanced Materials Research, 2011Co-Authors: Yan Feng, Lei ChengAbstract:The blast furnace water Quenched Slag has characteristics such as porous and superficial roughness, so it can be modified and cranked out a filter media. The treatment efficiency of domestic sewage with water Quenched Slag biological aerated filter (BAF) was researched in this paper. And the removal rate of organic compound, ammonium, SS, and chroma was also investigated. The results showed that the quality indexes of the domestic sewage after treatment met the primary standard of the national integrated wastewater discharge standard (GB8978-1996). So the purpose of the waste harnessed by other waste is achieved. The applicative prospect of blast furnace water Quenched Slag on domestic sewage treatment is very broad.
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The Characteristics and Application of Water Quenched Slag Particles (WQSP) as Filter Media
Advanced Materials Research, 2010Co-Authors: Yan Feng, Jian Wei Zhang, Tan JuanAbstract:Novel filter media-water Quenched Slag particles (WQSP) were prepared using waste material- Water Quenched Slag, clay and pore-forming material with a mass ratio of 3:2:1. Compared with haydite, WQSP had higher total porosity, larger total surface area and lower bulk and apparent density. Tests of heavy metal elements in lixivium proved that SGSP were safe for wastewater treatment. In order to ascertain the application of WQSP ，WQSP and haydite were applied as the media of biological aerated filters (BAF) to treat municipal wastewater in two lab scale upflow BAFs. The results showed that WQSP reactor brought a relative superiority to haydite reactor in terms of chemical oxygen demand (CODcr) and ammonia nitrogen (NH3-N) removal at the conditions of water temperature ranging from 200C to 260C and DO ≥4.00 mg·L-1. Therefore, WQSP application, as a novel process of treating wastes with wastes, provided a promising way in water Quenched Slag utilization.
Lei Chen - One of the best experts on this subject based on the ideXlab platform.
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Performance of water Quenched Slag particles (WQSP) for municipal wastewater treatment in a biological aerated filter (BAF)
Biomass and Bioenergy, 2012Co-Authors: Yan Feng, Liping Qiu, Xin Wan, Lei ChenAbstract:Abstract Water Quenched Slag particles (WQSP) and haydite were applied to treat municipal wastewater in two lab-scale up-flow biological aerated filters (BAF) to compare their abilities to act as biofilm supports. The results showed that WQSP reactor brought a relative superiority to haydite reactor in terms of chemical oxygen demand (CODcr) and ammonia nitrogen (NH 3 -N) removal when hydraulic retention time (HRT) ranged from 1 h to 5 h.Compared with haydite, WQSP had higher total porosity, larger total surface area and lower bulk and apparent density. Tests of heavy metal elements in lixivium proved that WQSP were safe for wastewater treatment. In addition, the detection of the amount of hetero bacteria and nitrobacteria of two biological aerated filters in three HRTs also showed that WQSP medium was more suitable to the attached growth of nitrobacteria, which is helpful to the improvement of nitrification performance in WQSP BAF. Therefore, WQSP is a potential material for use as the filter media of BAF for wastewater treatment. WQSP application, as a novel process of treating wastes with waste, provides a promising way to use water Quenched Slag (WQS).
Xin Wan - One of the best experts on this subject based on the ideXlab platform.
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Performance of water Quenched Slag particles (WQSP) for municipal wastewater treatment in a biological aerated filter (BAF)
Biomass and Bioenergy, 2012Co-Authors: Yan Feng, Liping Qiu, Xin Wan, Lei ChenAbstract:Abstract Water Quenched Slag particles (WQSP) and haydite were applied to treat municipal wastewater in two lab-scale up-flow biological aerated filters (BAF) to compare their abilities to act as biofilm supports. The results showed that WQSP reactor brought a relative superiority to haydite reactor in terms of chemical oxygen demand (CODcr) and ammonia nitrogen (NH 3 -N) removal when hydraulic retention time (HRT) ranged from 1 h to 5 h.Compared with haydite, WQSP had higher total porosity, larger total surface area and lower bulk and apparent density. Tests of heavy metal elements in lixivium proved that WQSP were safe for wastewater treatment. In addition, the detection of the amount of hetero bacteria and nitrobacteria of two biological aerated filters in three HRTs also showed that WQSP medium was more suitable to the attached growth of nitrobacteria, which is helpful to the improvement of nitrification performance in WQSP BAF. Therefore, WQSP is a potential material for use as the filter media of BAF for wastewater treatment. WQSP application, as a novel process of treating wastes with waste, provides a promising way to use water Quenched Slag (WQS).
Liping Qiu - One of the best experts on this subject based on the ideXlab platform.
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Performance of water Quenched Slag particles (WQSP) for municipal wastewater treatment in a biological aerated filter (BAF)
Biomass and Bioenergy, 2012Co-Authors: Yan Feng, Liping Qiu, Xin Wan, Lei ChenAbstract:Abstract Water Quenched Slag particles (WQSP) and haydite were applied to treat municipal wastewater in two lab-scale up-flow biological aerated filters (BAF) to compare their abilities to act as biofilm supports. The results showed that WQSP reactor brought a relative superiority to haydite reactor in terms of chemical oxygen demand (CODcr) and ammonia nitrogen (NH 3 -N) removal when hydraulic retention time (HRT) ranged from 1 h to 5 h.Compared with haydite, WQSP had higher total porosity, larger total surface area and lower bulk and apparent density. Tests of heavy metal elements in lixivium proved that WQSP were safe for wastewater treatment. In addition, the detection of the amount of hetero bacteria and nitrobacteria of two biological aerated filters in three HRTs also showed that WQSP medium was more suitable to the attached growth of nitrobacteria, which is helpful to the improvement of nitrification performance in WQSP BAF. Therefore, WQSP is a potential material for use as the filter media of BAF for wastewater treatment. WQSP application, as a novel process of treating wastes with waste, provides a promising way to use water Quenched Slag (WQS).
Lev Filippov - One of the best experts on this subject based on the ideXlab platform.
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Utilisation perspective on water Quenched and air-cooled blast furnace Slags
Journal of Cleaner Production, 2020Co-Authors: Sunil Kumar Tripathy, Jayalaxmi Dasu, Y. Rama Murthy, Gajanan Kapure, Atanu Ranajan Pal, Lev FilippovAbstract:Abstract Efficient utilisation and recycling of industrial waste along with minimum exploitation of natural resources are major challenge towards the circular economy and sustainability of the planet. Blast furnace Slag is a by-product of the iron-making process while producing pig iron. The present research provides an understanding of the two different types of Slags of water Quenched granulated Slag and air-cooled Slag that are generated from iron making process through the blast furnace route. The chemical, mineralogical, physical, thermal and morphological properties of four different Slags generated under different cooling condition are evaluated for recycling to cement and aggregate application. Results indicated that the cooling pattern of the Slag significantly affects the particle morphology and phase formation, which determines their usage and utilisation. Air-cooled Slag contains substantial quantity of crystalline phases (>50%) which prevents the Slag to exhibit cementitious properties whereas water-Quenched Slag mainly contains amorphous phases (>90%). In addition, the applicability in cement and aggregate application of both mentioned types of Slags were studied. It is concluded that water Quenched Slag is closely matching with the properties required to be utilised in Portland Slag cement manufacturing process. On the other hand, air-cooled Slag is suitable as an aggregate for application in the construction industry.
