Physical-chemical pre-treatment of sanitary landfill raw leachate by direct ascending filtration

Article Chemistry, Multidisciplinary

Treatment of controlled discharge leachate by coagulation-flocculation: influence of operational conditions

Khaled Djeffal et al.

Summary: The study aimed to optimize the operational conditions of coagulation-flocculation process for leachate clarification, testing different coagulants and agitation methods. pH adjustment was crucial for treatment success, with a significant reduction in turbidity achieved by adjusting coagulant dosage, stirring speed, and time. Bacteriological analysis showed differences in microbial content depending on the coagulant used. Additionally, ultrasound waves improved leachate treatment efficiency compared to mechanical agitation, resulting in optimal clarification at specific temperatures and BOD5 levels for different coagulants.

SEPARATION SCIENCE AND TECHNOLOGY (2021)

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Article Engineering, Environmental

Integration of ultrafiltration membrane process with chemical coagulation for proficient treatment of old industrial landfill leachate

Shaik Nazia et al.

Summary: The study integrated UF process and chemical coagulation to treat OILL, achieving significant reduction in TDS, conductivity, turbidity, color and pH values through coagulation by FeCl3 and UF membrane process. FeCl3 coagulant + UF showed the highest removal efficiency for color and turbidity, with the overall process demonstrating advantages of small equipment footprint, economy, environmental safety, low energy consumption, and ease of scale-up for up to 70% water reclamation.

CHEMICAL ENGINEERING JOURNAL (2021)

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Article Environmental Sciences

Landfill leachate wastewater treatment to facilitate resource recovery by a coagulation-flocculation process via hydrogen bond

Sze Yin Cheng et al.

Summary: The recent trend of recovering value-added products from wastewater requires more effective pre-treatment technology. It is crucial to optimize leachate treatment to facilitate downstream processing for energy production or value-added products, by using simple yet effective technology to remove pollutants with minimum chemical additives.

CHEMOSPHERE (2021)

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Review Environmental Sciences