Effect of oxidation ditch and anaerobic-anoxic-oxic processes on CX3R-type disinfection by-product formation during wastewater treatment

Abstract

Biological treatment enhanced the formation of a series of DBPs, especially Br-DBPs. • Biological treatment reduced the DOC and UV 254 but increased the DON and SUVA. • Biological treatment increased the DON/ DOC ratio and bromide/DOC ratio. • SMP-and humic acid-like matters increased significantly after OD and AAO treatment. • High MW fractions were transformed into low MW fractions after OD and AAO processes.

Potential Disrupting Effects of Wastewater-Derived Disinfection Byproducts on Chinese Rare Minnow (Gobiocypris rarus) Transthyretin: An In Vitro and In Silico Study

“…Fourteen wastewater-derived DBPs including eight aromatic DBPs (i.e., 2,4,6-trichlorophenol, 2,4,6-tribromophenol, 2,4,6-triiodophenol, 2,6-dibromo-4-nitrophenol, 3,5-dibromo-4-hydroxybenzoic acid, 3,5-dibromo-4-hydroxybenzadehyde, 3,5-dichlorosalicylic acid, and 3,5-dibromosalicylic acid) and six aliphatic DBPs (i.e., nitrosodiethylamine, dibromoacetonitrile, dichloroacetic acid, bromoacetamide, bromodichloromethane, and dichloroacetaldehyde hydrate) were selected as model substances. Moreover, other 12 chemicals were further employed to compare the distinct binding affinity between ligands and hTTR/CrmTTR.…”

Diving boldly into COVID‐19 contaminated wastewater: Eyes at nanotechnology‐assisted solutions

“…On the contrary, it boosts dissolved organic nitrogen (DON) and specific ultraviolet absorption. Additionally, biological treatment increases the DON/DOC ratio and bromide/DOC ratio 127 …”

Smart Stimulation Response of a Pyrene-Based Lanthanide(III) MOF: Fluorescence Enhancement to HX (F and Cl) or R-COOH and Artificial Applicable Film on HCl Vapor Sensing

“…The workplace exposure limit for HCl is 5 ppm, individuals cannot tolerate exposure to 50–100 ppm of HCl vapor, and exposure to HCl at 1300–2000 ppm will be fatal. , As is well known, oxalic acid (OA) is widely distributed in plants, animals, and fungi, but it is also considered a water pollutant from sources such as textile and metallurgical industries . Moreover, haloacetic acids (HAAs) are a class of disinfection byproducts. , As one of the major HAAs, trichloroacetic acid (TCA) not only poses a high carcinogenic risk but also has extremely high toxicity to aquatic organisms. , Especially with the outbreak of the coronavirus disease (COVID-19) pandemic in 2019, the frequency of sewage disinfection has increased, and the content of TCA in sewage has further increased. The risk of harm to the environment and human health continues to increase.…”

“…28,29 As one of the major HAAs, trichloroacetic acid (TCA) not only poses a high carcinogenic risk but also has extremely high toxicity to aquatic organisms. 30,31 Especially with the outbreak of the coronavirus disease (COVID-19) pandemic in 2019, the frequency of sewage disinfection has increased, and the content of TCA in sewage has further increased. The risk of harm to the environment and human health continues to increase.…”