Water treatment

The Free Water Surface wetland (FWS) has emerged as a promising technological solution for wastewater treatment in natural environments. The study aimed at investigating the performance of a laboratory-scale Free Water Surface wetland (FWS) unit designed to treat domestic wastewater with a daily capacity of 20 liters.

9p vibecca 01-10-2024 2 0   Download

The article analyzes the cause, proposes the solutions for pavement foundation treatment and presents an initial application to Noi Bai International Airport. The findings of this study could be critical and significance basis for both academic and practical applications to maintain the service quality of airport construction infrastructure in Vietnam.

13p vibecca 01-10-2024 1 1   Download

The study presents the evaluation results of typical PAEs (6 PAE indicators) of the PAE family in water samples from Ho Tay Lake, Hanoi. The quality of lake water in general and in Hanoi in particular is influenced by many factors. The sources of treatment in lake water such as restaurant businesses and residential areas nearby, can degrade lake water quality.

10p vibecca 01-10-2024 3 1   Download

This study, therefore, examined if the root system development, water use, photosynthetic rate, and dry matter production of rice grown under water deficit and continuously waterlogged conditions would be affected by different N form treatments.

10p vibecca 01-10-2024 1 0   Download

In this research, we had successfully prepared a series of RF-carbon nitride composites for photocatalyst application. The modification of carbon nitride with RF resins aimed to enhance physical characteristics and photocatalytic activity toward organic pollutants, such as methylene blue. XRD, FTIR, SEM, and N2 adsorptiondesorption isotherms were used to characterize the asprepared composite materials.

10p vikwong 29-09-2024 1 1   Download

In this study, adsorptive removal of an antibiotic oxytetracycline (OTC) using polyanion poly(2-acrylamide-2-methylpropane sulfonic acid), PAMPs modified α-Al2O3 nanoparticles (PAMNA) was investigated.

5p vikwong 29-09-2024 0 0   Download

In the present study, an anionic surfactant, sodium dodecyl sulfate (SDS) was used to modify aluminum hydroxide nanoparticles to form a novel adsorbent (SMAH) for removal of an organochloride pesticide, Dichlorodiphenyltrichloroethane (DDT) in water environment.

5p vikwong 29-09-2024 3 1   Download

The results showed that the pseudo-second-kinetic model better described the adsorption kinetics of tartrazine on MoS2 and film diffusion was the rate-limiting step. In addition, the adsorption capacity of MoS2 was also performed with various organic dyes such as nile blue, janus green B, and congo red.

7p vikwong 29-09-2024 3 0   Download

In this study, a CuZnO2/MSU photocatalyst was developed using a simple method and common resources. Characterization through XRD, BET, EDX, TEM, and SEM techniques revealed its worm-hole structure and uniform CuZnO2 distribution. The catalyst exhibited a reduced band gap of 2.4 eV and a substantial surface area of 307 m²/g, facilitating 94% degradation of Ciprofloxacin (CIP) within 4 hours of light exposure.

7p vikwong 29-09-2024 2 0   Download

The main purpose of the study was (i) to evaluate the effect of nitrogen treatment on domestic effluent of the model system, (ii) to determine the appropriate water retention time of the system.

10p vifilm 24-09-2024 1 1   Download

This study aimed to investigate the possibility of degrading the pesticides of the BAC process. Based on the promising results in the full-scale reactor receiving river water, a lab-scale reactor was installed to study the pesticide removal mechanism and the contribution of nitrifying bacteria to the removal efficiency.

13p vifilm 24-09-2024 2 1   Download

In Vietnam, there have been some studies on desalination but mostly on low and stable salinity and small-scale system. In fact, the salinity varies quite substantialy within seasons. Thus, the main objective of this study is therefore to evaluate the brackish water treatment capacity of different nanofiltration (NF) processes for domestic and drinking water supply for residential areas in Thu Bon river basin.

7p viyoko 24-09-2024 2 0   Download

This study aims to investigate the fouling mechanism, which mostly impacts the water permeability via empirical modeling. Normally, there are four different physical-based types of fouling: complete blocking, intermediate blocking, cake filtration and standard blocking or adsorption.

7p viyoko 24-09-2024 0 0   Download

Capacitive Deionization (CDI) has emerged as a promising and environmentally sound solution for addressing pressing water treatment challenges. This critical review meticulously examines the design, operational considerations, and performance metrics of CDI systems, particularly highlighting their significance in environmental applications under real-world conditions for handling different water sources such as groundwater, surface water, sea water.

22p vifaye 20-09-2024 1 1   Download

This paper offers a comprehensive techno-economic analysis of capacitive deionization (CDI) technology, examining its significance in water treatment. The analysis begins with a detailed elucidation of CDI principles, emphasizing its operational framework, and delineating both advantages and limitations.

14p vifaye 20-09-2024 2 1   Download

With the impact of global climate change, saline intrusion into surface water in coastal areas has become a major issue. The water treatment using surface water in these areas has to deal with double issues including organic matters and salinity. This paper evaluated the trihalomethanes formation during the treatment of surface water at pilot scale using different disinfection dose and at different salinity levels.

11p vifaye 20-09-2024 1 1   Download

This study reviewed the latest information on the presence of PMMoV and human enteric viruses in water environments and in wastewater (water) treatment systems to evaluate the suitability of PMMoV as an indicator virus for water safety and quality.

13p vifaye 20-09-2024 3 1   Download

Phần 1 của cuốn sách "Tiếng Anh cấp thoát nước" trình bày các bài về xử lý cấp nước (supply water treatment) gồm: kỹ thuật môi trường/vệ sinh, thách thức của việc thiết kế nhà máy xử lý nước, hòa trộn, keo tụ và tạo bông, công nghệ lắng, lọc tốc độ cao bằng vật liệu dạng hạt;... Mời các bạn cùng tham khảo!

136p khuynhlinhnguyet1009 05-04-2024 10 3   Download

Phần 2 của cuốn sách "Tiếng Anh cấp thoát nước" trình bày các bài về xử lý nước thải (waste water treatment) gồm: kỹ thuật xử lý nước thải, những mục tiêu và quy tắc xử lý nước thải, phân loại các phương pháp xử lý nước thải, thải bùn và sử dụng lại, thực hiện các chương trình quản lý nước thải;... Mời các bạn cùng tham khảo!

131p khuynhlinhnguyet1009 05-04-2024 5 3   Download

The main aim of this research is to develop a viable solution to treat and reuse car wash wastewater. To do so, two treatment systems were evaluated. The first treatment system comprised of coagulation-flocculation and ceramic ultrafiltration membrane and reverse osmosis and the second treatment system is enhanced membrane bioreactor (eMBR).

201p runthenight04 02-02-2023 8 3   Download