Treatment of tannery wastewater in a pilot scale hybrid constructed wetland system in Arequipa, Peru

Advanced Oxidation Processes and Biotechnological Alternatives for the Treatment of Tannery Wastewater

“…Different studies have reported high values of BOD, COD and even the presence of Cr in effluents [ 13 , 36 , 39 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 ]. Other compounds have been reported in these wastewaters, finding results of acidic pH between 3.4 ± 0.0351 and 5.96 ± 0.0351 [ 56 , 57 , 58 ] and basic pH between 8.0 ± 0.4 and 11.64 ± 0.53 [ 37 , 41 , 46 , 51 , 52 , 54 , 55 , 59 , 60 , 61 ]; in relation to TDS, typical values can have concentrations ranging from 2355 ± 85 mg*L −1 to 10,000 ± 800 mg*L −1 [ 9 , 37 , 39 , 42 , 61 , 62 ]; high concentrations have been recorded that can be between 10,560 ± 78 mg*L −1 and 72,400 ± 0.10 mg*L −1 [ 35 , 40 , 53 , 54 , 55 , 63 ]; as for BOD, the average values can be in low ranges from 160 ± 15.8 mg*L −1 to 1250 ± 38 mg*L −1 [ 37 , 39 , 61 , 63 ] and in high ranges that fluctuate between 1500 ± 41 mg*L −1 and 6000 ± 30 mg*L −1 [ 9 , 49 , 50 , 51 , 53 , 54 …”

“…Other compounds have been reported in these wastewaters, finding results of acidic pH between 3.4 ± 0.0351 and 5.96 ± 0.0351 [ 56 , 57 , 58 ] and basic pH between 8.0 ± 0.4 and 11.64 ± 0.53 [ 37 , 41 , 46 , 51 , 52 , 54 , 55 , 59 , 60 , 61 ]; in relation to TDS, typical values can have concentrations ranging from 2355 ± 85 mg*L −1 to 10,000 ± 800 mg*L −1 [ 9 , 37 , 39 , 42 , 61 , 62 ]; high concentrations have been recorded that can be between 10,560 ± 78 mg*L −1 and 72,400 ± 0.10 mg*L −1 [ 35 , 40 , 53 , 54 , 55 , 63 ]; as for BOD, the average values can be in low ranges from 160 ± 15.8 mg*L −1 to 1250 ± 38 mg*L −1 [ 37 , 39 , 61 , 63 ] and in high ranges that fluctuate between 1500 ± 41 mg*L −1 and 6000 ± 30 mg*L −1 [ 9 , 49 , 50 , 51 , 53 , 54 , 55 ]. In relation to the total chromium concentration, values ranging from 0.83 ± 0.028 mg*L −1 to 134 ± 5.8 mg*L −1 have been reported [ 9 , 35 , 38 , 40 , 61 , 64 ], as well as high ranges from 147.4 ± 1.5 to 3800 ± 115 mg*L −1 [ 35 , 37 , <...>…”

Current available treatment technologies for saline wastewater and land‐based treatment as an emerging environment‐friendly technology: A review

“…The working principle of CWs is based upon the parameters such as flow (subsurface/surface) and type of CWs (vertical/horizontal, material used, and the selection of plants). It was evident from many studies that some of the CWs have been successfully implemented at pilot scale and showed efficiencies of organic load and heavy metals removal from the wastewater with higher magnitudes (Fu et al, 2019; Varma et al, 2021; Zapana et al, 2020). One such study showed significant reduction in heavy metal concentration from industrial wastewater by using Typha angustifolia (microphyte) in a CW (Etteieb et al, 2021; Fountoulakis et al, 2017; Tisarum et al, 2021; Verma & Suthar, 2018).…”

Evaluation of Tannery Wastewater Treatment by Integrating Vesicular Basalt With Local Plant Species in a Constructed Wetland System

“…), and Phalaris arundinacea wetland plants have been used for both domestic and industrial wastewater treatments in a CWS (Bastviken et al, 2005;Vymazal and Kröpfelová, 2008;Afzal et al, 2019). Studies indicated that some wetland plant species such as Typha domingensis, Phragmites karka (Reeds), Phragmites australis, Arundo donax, and Sarcocornia fruticosa had the potential to withstand the saline chrome containing tannery effluent and phytoremediate chromium after secondary treatment in a CWS at a pilot-scale (Calheiros et al, 2012;Saeed et al, 2012;Tadese and Seyoum, 2015;Zapana et al, 2020).…”