Simultaneous biological removal of nitrogen and phosphorus from secondary effluent of wastewater treatment plants by advanced treatment: A review

Iron–ozone catalytic oxidation reactive filtration of municipal wastewater at field pilot and full‐scale with high‐efficiency pollutant removal and potential negative CO2e with biochar

“…Tertiary P removal at the Horwich WRRF was more likely challenging than plants that use enhanced biological nutrient removal because it uses iron‐based CEPT. This early plant treatment iron dosing could saturate reactive iron pathways in the wastewater and allow aged micro‐particulate iron oxides and possibly mineralized vivianite, Fe 3 (PO 4 ) 2 •8H 2 O, to proliferate throughout the system works, possibly impacting TP (Zhou et al, 2022).…”

Detection of Retinoic Acid-Active Chemicals in Diverse Sample Matrices Via a Quantum Dots-Based Nuclear Receptor Fluorescence Probe-Mediated Biosensor

“…Endocrine-disrupting chemicals (EDCs) can inadvertently cause adverse health effects, such as reproductive pathologies, metabolic diseases, and cancers. Retinoic acids (RAs) are a class of critical regulators for embryo development, playing crucial roles in biological processes that contribute to immune function, hematopoiesis, reproduction, vision, and embryonic patterning and also control cellular differentiation in vertebrates. , In addition to natural RAs and their various oxidative metabolites, several chemicals have recently been reported to have RA disrupting effects (a class of endocrine-disrupting effects), including some phenolic chemicals, parabens, organochlorine pesticides, and organophosphate flame retardants, which have diverse chemical structures and are widely distributed in the environment. − Both RA agonists and antagonists have the potential to harm the organism, with a particularly high risk of causing developmental abnormalities, and therefore, human exposure to such RA-active chemicals is of concern. , This has prompted the evaluation of RA agonistic and antagonistic activities in aquatic environments such as lakes, rivers, and wastewater treatment plants (WWTPs). − However, conventional instrumental analysis technologies, such as high-performance liquid chromatography and spectrophotometry, have disadvantages of being time-consuming and complicated to operate; especially, they cannot screen compounds that have not been previously recognized . Therefore, as with most EDCs, developing a simple and reliable method for continuous monitoring of RA-active chemicals is in high demand and yet remains a significant challenge.…”

Synergetic effects of pyrrhotite and biochar on simultaneous removal of nitrate and phosphate in autotrophic denitrification system

“…Nitrogen (N) and phosphorus (P) pollution has been a global environmental problem for a long time, triggering different degrees of water eutrophication (Boeykens et al, 2017) and harming human health (Yang et al, 2017). Among various discharge sources of total nitrogen (TN) and total phosphorus (TP), the effluent from wastewater treatment plants (WWTPs) is one of the most important sources (Zhou et al, 2022). For example, current discharge requirements of TN and TP in China are 15 and 0.5 mg/L, respectively, which are still far higher than the thresholds causing eutrophication (0.5–1.2 mg/L for TN and 0.03–1.0 mg/L for TP) (Zhou et al, 2022).…”

“…Among various discharge sources of total nitrogen (TN) and total phosphorus (TP), the effluent from wastewater treatment plants (WWTPs) is one of the most important sources (Zhou et al, 2022). For example, current discharge requirements of TN and TP in China are 15 and 0.5 mg/L, respectively, which are still far higher than the thresholds causing eutrophication (0.5–1.2 mg/L for TN and 0.03–1.0 mg/L for TP) (Zhou et al, 2022). Moreover, traditional advanced treatment technologies, such as coagulation and sedimentation, Fenton oxidation, and enhanced biological treatment (Acero et al, 2016; Bai et al, 2011; Liu et al, 2020), are relatively costly and cannot remove N and P simultaneously (Zhou et al, 2022).…”