Up-concentration processes of organics for municipal wastewater treatment: New trends in separation

C He, K Wang, K Fang, H Gong, Z Jin, Q He… - Science of The Total …, 2021 - Elsevier
Carbon neutrality is a pressing goal for the whole society. Over 20% of municipality electrical
energy on public utilities was consumed by the operation of wastewater treatment plants …

Ballasted flocculation pretreatment for mitigating ultrafiltration membrane fouling: Role of differently charged polyacrylamides at typical coagulant dosages

W He, J Luo, Y Wu, T Luo, C Tang - Separation and Purification Technology, 2024 - Elsevier
In this work, ballasted flocculation (without sedimentation) was suggested as a potential
pretreatment for ultrafiltration to improve cake layer microstructure and mitigate membrane …

Improving sludge settling performance of secondary settling tank and simultaneously adsorbing nitrate and phosphate with surfactant modified zeolite (SMZ) ballasted …

H Lin, X Huang, J Chang, B Li, Y Bai, B Su, L Shi… - Journal of …, 2023 - Elsevier
Poor sludge settling characteristics limit the enhancement of treatment capacity of municipal
wastewater treatment plants, and excessive nitrogen and phosphorus discharge will further …

Sustainable iron-grafted cellulose fibers enable coagulant recycling and improve contaminant removal in water treatment

RS Kurusu, M Lapointe, N Tufenkji - Chemical Engineering Journal, 2022 - Elsevier
Large amounts of expensive single-use and metal-based coagulants and synthetic
flocculants are employed and lost in settled sludge during water treatment. In this work …

Comparison of modification methods for the preparation of coarse organic flocculant with macromolecular products from the hydrothermal liquid phase of sludge

Y Yu, X Zha, Y Huang, S Chen, X Sun - Journal of Water Process …, 2024 - Elsevier
Implementing appropriate measures to recycle and convert the organic matter in sewage
into valuable products can effectively contribute to resource recovery. The macromolecular …

Use of ballasted flocculation (BF) sludge for the manufacturing of lightweight aggregates

KH Lee, M Qasim, KG Lee, MA Inam, IA Khan… - Journal of …, 2022 - Elsevier
Ballasted flocculation (BF) is an efficient way to remove the turbidity from surface water. The
objective of the present study is to optimize the ballast (magnetite), coagulant (poly …

Developing a model to determine the settling velocity of ballasted flocs

M Qasim, S Park, Y Moon, JO Kim - Journal of Environmental Chemical …, 2020 - Elsevier
Ballasted flocculation is an advanced clarification process capable to treat exceed of
colloidal and suspended particles in natural water resources caused by climate change. The …

Two-stage injection of polymer and microsand during ballasted flocculation for treating kaolin waters with or without humic acid: Floc evolutional characteristics …

W He, J Luo, J Huang, C Tang, Z Yang - Water Research, 2024 - Elsevier
Ballasted flocculation is regarded as a most promising water treatment technology in
aspects of retrofit and high-rate applications. To deep understand the incorporation …

[HTML][HTML] An eco-friendly approach to separate emulsified oil from water using all natural materials of chitosan and beach sand

J Saththasivam, O Ogunbiyi, J Lawler, Z Liu - Cleaner Materials, 2024 - Elsevier
Oil-contaminated water from oil and gas exploration remains the industry's primary waste
stream. The common method of using chemical coagulation/flocculation followed by air …

Unraveling the role of ballast surface charge at floc growth behavior in ballasted flocculation

M Qasim, S Park, JO Kim - Separation and Purification Technology, 2021 - Elsevier
This study was emphasized on unraveling the concealed role of surface charge
characteristics of employed ballasts at suspended solids interaction with employed ballasts …