Optimal regulation of N/P in horizontal sub-surface flow constructed wetland through quantitative phosphorus removal by steel slag fed

Removal of phosphate from wastewater by steel slag with high calcium oxide column filter system; efficiencies and mechanisms study

“…Besides, as a result of high CaO levels in the HCa filter, the chemical precipitation is a more acceptable phenomenon to remove phosphate than physical adsorption 29 . The efficiency of steel slag in removing P from different types of water, surface water as well as wastewater, has been confirmed in the literature 30–32 . However, the present study contributes to the literature by explaining the role of aeration at different pH values in enhancing the removal mechanisms.…”

“…29 The efficiency of steel slag in removing P from different types of water, surface water as well as wastewater, has been confirmed in the literature. [30][31][32] However, the present study contributes to the literature by explaining the role of aeration at different pH values in enhancing the removal mechanisms.…”

Vegetated Steel Slag Substrate Constructed Wetlands can Achieve High Efficiency Simultaneous Nitrogen and Phosphorus Removal

“…Next, not all articles could be employed for further analysis because they were review articles, and certain articles did not contain data on N and P removal amounts. By reading the title, abstract, and text of the articles during screening, 27 articles (Huang and He, 2011;Wu et al, 2011;Xiong et al, 2011;Barca et al, 2013;Shilton et al, 2013;Barca et al, 2014;Ren et al, 2014;Shi et al, 2014;Cui et al, 2015;Ge et al, 2015;Hussain et al, 2015;Yun et al, 2015;Zhang et al, 2015;Blanco et al, 2016;Ge et al, 2016;Lu et al, 2016;Mohamed et al, 2016;Ahmad et al, 2017;Shi P. et al, 2017;Park et al, 2017;Yuan et al, 2017;Adera et al, 2018;Xu et al, 2019;Chen et al, 2020;Hamdan et al, 2020;Saeed et al, 2020;Wan et al, 2020) met our requirement and were finally selected for data analysis, which provided a highly uniform dataset and reliable results. Datasets of the substrate filling mode, plant cultivation, flow direction of CW, steel slag particle size (SSPS), temperature (T), hydraulic retention time (HRT), hydraulic loading rate (HLR), pH value (pH), influent concentration (C in ), total nitrogen (TN), NH 4 + -N, and TP removal amounts (ΔC = C in − C out ) were extracted from these articles, and some original data were modified.…”

“…In the initial application stage, SSCWs stuffed with single steel slag as substrate were used to remove P from sewage with different P concentrations. Following that, SSCWs with a combined and modified substrate were used to comprehensively improve the quality of septic tank sewage (Huang and He, 2011;Hussain et al, 2015), domestic sewage (Wu et al, 2011;Yun et al, 2015;Mohamed et al, 2016;Hamdan et al, 2020), urban sewage (Barca et al, 2013), pond sewage (Shilton et al, 2013), secondary effluent of sewage treatment plants (Xiong et al, 2011;Zhang et al, 2015;Chen et al, 2020), polluted river waters (Shi et al, 2014;Ge et al, 2015;Ge et al, 2016), hydroponic sewage (Park et al, 2017), agricultural sewage (Lu et al, 2016;Yuan et al, 2017), dairy farm sewage (Adera et al, 2018), leachate (Saeed et al, 2020), and other sewage. Besides, SSCWs demonstrate high P recovery potential.…”

Steel slag quality control for road construction aggregates and its environmental impact: case study of Vietnamese steel industry—leaching of heavy metals from steel-making slag

“…Steel slag is an industrial by product of steel making processes and has been widely used in countries like Japan, United States, and European Union nations. Steel slag has been widely utilized as construction materials for road construction and environmental remediation because of its similarity in physical properties as natural materials such as gravel (Chen et al 2020;Hainin et al 2015;Horii et al 2013;Liyun et al 2017;Mombelli et al 2016;Piatak et al 2015).…”