Study on clogging mechanisms of constructed wetlands from the perspective of wastewater electrical conductivity change under different substrate conditions

Wang, Hanxi; Sun, Jitian; Xu, Jianling; Sheng, Lianxi

doi:10.1016/j.jenvman.2021.112813

Cited by 24 publications

(2 citation statements)

References 29 publications

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“…It is also well-known that high conductivity values in the e uent alter the transport of chemical compounds between the environment and the interior of the microbial cell, causing changes in metabolism and inhibitory effects, contributing to a reduction in the e ciency of the biological treatment of the e uent (Cui et al, 2023). Furthermore, it can also be used to analyze the stability of CW substrate materials, as well as their adsorption (Wang et al, 2021). In this sense, a lower EC in CW may indicate the stability of the materials used as a substrate.…”

Section: Analytical Characterizationmentioning

confidence: 99%

Sequential use of Microalgae and Constructed Wetlands and its potential to remove organic load, toxicity and pharmaceuticals from urban wastewaters

de Oliveira,

Lutterbeck,

Schneider

et al. 2024

Preprint

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The present study aimed at to evaluate the performance of integrated system composed of microalgae (MA) and constructed wetlands (CW). The MA production tank was set up as a raceway type and microalgae of the genus Chlorella were inoculated, while the CW was set up inspired by the first stage of the French model and vegetated with the macrophytes Chrysopogon zizanioides, Typha domingensis and Dracaena trifaciata. The Hydraulic Retention Time in each unit was of 7 days, totaling 14 days of treatment. Promising results were obtained regarding the reductions of dissolved organic carbon (67.2%) and Total N (68.6%). The treatment was also able to fully remove the acute ecotoxicity against Dapnhia magna and the genotoxicity in the A. cepa test assay. Chromatographic analysis showed the presence of 9 pharmaceuticals in the raw wastewaters, whereas after the CW unit only residuals of dipyrone (1%) were still detected. Future recommendations include the investigation of the main removal mechanisms of the pharmaceuticals and improvements of the separation process of the MA.

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Section: Analytical Characterizationmentioning

confidence: 99%

Sequential use of Microalgae and Constructed Wetlands and its potential to remove organic load, toxicity and pharmaceuticals from urban wastewaters

de Oliveira,

Lutterbeck,

Schneider

et al. 2024

Preprint

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“…During the experiment, the EC values of the effluent from TFTW and HSSF TW were slightly higher than those of the influent (2.1-2.2 mS/cm) (Figure 2b). TWs can effectively remove various types of pollutants, such as organics, N, and P, and lead to a decrease in EC values for domestic sewage treatment (Wang et al, 2021). The slight increase in the EC might be because of the warm climate weather at Jordan which causes more evapotranspiration.…”

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confidence: 99%

Assessment of novel hybrid treatment wetlands as nature‐based solutions for pharmaceutical industry wastewater treatment

Al‐Mashaqbeh,

Alsalhi,

Salaymeh

et al. 2023

Water & Environment J

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This study investigated the use of nature‐based solutions for treating real pharmaceutical industry wastewater in Jordan. A pilot‐scale hybrid treatment wetland (TW) equipped with local zeolite was employed, comprising a tidal flow TW and a horizontal subsurface flow TW. This system was efficient in treating pharmaceutical wastewater with removal efficiencies of 61.4%, 52.6%, 60.1%, and 61.9% for chemical oxygen demand, total phosphorus, total nitrogen, and NH4+‐N, respectively. The final effluent met Jordanian standards for the reuse of treated wastewater in irrigation (Class B). Five pharmaceuticals, namely, enrofloxacin, ciprofloxacin, ofloxacin, lincomycin, and trimethoprim, demonstrated nearly completed removal (93.6–99.9%). Moderated removal performances (59.2–68.2%) were observed for two compounds, flumequine and sulfaquinoxaline. However, three pharmaceuticals, namely, carbamazepine, diclofenac, and sulfadimidine, showed limited removal performances (1.1–20.5%). This study supported the feasibility of using nature‐based solutions for treating pharmaceutical wastewater and highlighted that future studies are required to optimize this strategy for removing a broader range of pharmaceuticals.

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Characteristic of KMnO4-modified corn straw biochar and its application in constructed wetland to treat city tail water

Wang

Zang

Teng

et al. 2023

Environ Sci Pollut Res

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Study on clogging mechanisms of constructed wetlands from the perspective of wastewater electrical conductivity change under different substrate conditions

Cited by 24 publications

References 29 publications

Sequential use of Microalgae and Constructed Wetlands and its potential to remove organic load, toxicity and pharmaceuticals from urban wastewaters

Sequential use of Microalgae and Constructed Wetlands and its potential to remove organic load, toxicity and pharmaceuticals from urban wastewaters

Assessment of novel hybrid treatment wetlands as nature‐based solutions for pharmaceutical industry wastewater treatment

Characteristic of KMnO4-modified corn straw biochar and its application in constructed wetland to treat city tail water

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