Matrices for toxic slime utilization after the polluted water treatment

2008 ◽  
Vol 30 (6) ◽  
pp. 375-386 ◽  
Author(s):  
L. N. Puzyrnaya ◽  
A. P. Krivoruchko ◽  
E. V. Terlikovskii
Keyword(s):  
Water Treatment ◽  
Polluted Water

Mass Transfer in Tubular Ceramic Membranes for Polluted Water Treatment - Numerical Simulation

2018 ◽  
Vol 20 ◽  
pp. 16-33 ◽  
Author(s):  
J. Saraiva de Souza ◽  
S. José dos Santos Filho ◽  
Severino Rodrigues de Farias Neto ◽  
A.G. Barbosa de Lima ◽  
H.A. Luma Fernandes Magalhães
Keyword(s):  
Mass Transfer ◽  
Water Treatment ◽  
Produced Water ◽  
Ceramic Membrane ◽  
Porous Ceramic ◽  
Ceramic Membranes ◽  
Numerical Results ◽  
Polluted Water ◽  
Separation Processes ◽  
Water Separation

Innovative technologies are needed to attend the increasingly strict requirements for produced water treatment, since most of the separation processes are limited to particles larger than 10 μm. Separation processes using ceramic membranes are attracting great interest from academic and industrial community. Nevertheless, few studies, especially numerical, regarding the inorganic membrane’s application for the polluted water separation have been reported. In the present work, therefore, a study of fluid-flow dynamics for a laminar regime in porous tubes (tubular porous ceramic membrane) has been performed. The mass, momentum and mass transport conservation equations were solved with the aid of a structured mesh using ANSYS CFX commercial package. The velocity of local permeation was determined using the resistance in series model. The specific resistance of the polarized layer was obtained by Carman-Kozeny equation. The numerical results were evaluated and compared with the results available in the literature, where by a good agreement with each other was found. The numerical results, obtained by the proposed shell and tubular membrane separation module, indicate that there is facilitation of mass transfer and hence a reduction in the thickness of the polarized boundary layer occurs.

scholarly journals Offshore Polluted Water treatment by biocomposites flocculation

2020 ◽  
Vol 5 (1) ◽  
pp. 21-24
Author(s):  
Rui Zhang ◽  
Yu Liu ◽  
MeiRong Sun ◽  
Honglian Zhang ◽  
Zhihui Zhao ◽  
...  
Keyword(s):  
Water Treatment ◽  
Polluted Water

Effects of magnetization on Fe(iii) species in magnetically enhanced coagulation ultrafiltration processes

RSC Advances ◽  
2016 ◽  
Vol 6 (87) ◽  
pp. 84397-84405 ◽  
Author(s):  
Jie Wang ◽  
Sasa Yang ◽  
Hui Jia ◽  
Hongwei Zhang
Keyword(s):  
Water Treatment ◽  
Membrane Fouling ◽  
Polluted Water ◽  
Enhanced Coagulation ◽  
Floc Properties

The effects of magnetization on floc properties and membrane fouling in magnetically enhanced coagulation ultrafiltration (MEC-UF) processes for micro-polluted water treatment were investigated in this study.

Application of Photocatalytic Oxidation Technology on Water Treatment

2012 ◽  
Vol 550-553 ◽  
pp. 657-661
Author(s):  
Wan Yi Liu ◽  
Zhen Bin Zhang ◽  
Li Shen ◽  
Rui Yang Chen ◽  
Miao Liu
Keyword(s):  
Water Treatment ◽  
Photocatalytic Oxidation ◽  
Redox System ◽  
Polluted Water ◽  
Semiconductor Surface ◽  
Bacteria Inactivation ◽  
Type Semiconductor ◽  
Oxidation Technology ◽  
Gap Width ◽  
Treatment Application

TiO2 catalyst is n-type semiconductor material. As long as the semiconductor absorbs photons of no less than the band gap width，it enters the excited state together with the formation of light-induced hole in the valence band simultaneously. It is perfectly capable of capturing electronic,and the photo-induced electron e- in the conduction band also has high activity to form a redox system in the semiconductor surface through which most of the organic pollutants and partial inorganic pollutants eventually degrade into innoxious substances. It describes the application of photocatalytic oxidation technology in the field such as treatment of industrial wastewater (inorganic polluted water; dye wastewater; papermaking wastewater; pesticide wastewater; oily wastewater) and drinking water. The research shows that various indexes (chromaticity; COD; mineralization rate; bacteria inactivation rate, etc.) of this technology in water treatment application have achieved the required standards.

Applied Study of Fibre Padding and Ceramic in Micro-Polluted Water Treatment

2009 ◽  
Vol 620-622 ◽  
pp. 559-562
Author(s):  
Xiao Dong Zhang ◽  
Ji Hua Chen ◽  
Dan Li Xi
Keyword(s):  
Water Treatment ◽  
High Capacity ◽  
Scientific Basis ◽  
Polluted Water ◽  
High Porosity ◽  
Water Quality Standards ◽  
Oxidation Pond ◽  
Dissolved Phosphorus ◽  
Applied Study ◽  
Operation And Management

The ecological fiber is a new water treatment material that is processed by simulating the shape of wild water-borne plant. In recent years it has been applied broadly in sewerage treatment for its following advantages: big specific surface area, high capacity in removing organic matter, good microbiological adhesiveness, variable pore sizes, wonderful performance in preventing jamming, flexibility in operation and management, etc. Ceramic padding has high porosity and moderate density which is highly favorable to the growth of microorganisms. This paper discussed treating the micro-polluted water by the combination of oxidation pond and constructed wetland. The results show that some indexes of the treated water reached or exceeded band 3 national water quality standards. These indexes include TN (total nitrogen), TP (total phosphorus), TDP (total dissolved phosphorus), CODCr and so on. The research results can provide scientific basis for project design.

scholarly journals Characterization of fouling layers for in-line coagulation membrane fouling by apparent zeta potential

RSC Advances ◽  
2015 ◽  
Vol 5 (128) ◽  
pp. 106087-106093 ◽  
Author(s):  
Jie Wang ◽  
Sasa Yang ◽  
Wenshan Guo ◽  
Huu-Hao Ngo ◽  
Hui Jia ◽  
...  
Keyword(s):  
Water Treatment ◽  
Zeta Potential ◽  
Membrane Fouling ◽  
Polluted Water

This study investigated the apparent zeta potential of fouled membranes for in-line coagulation membrane fouling monitoring in micro-polluted water treatment.

Experimental investigation on water treatment by the combined nano MgO–nanofiltration technique

2011 ◽  
Vol 63 (11) ◽  
pp. 2542-2546 ◽  
Author(s):  
Keqiang Zhang ◽  
Yi An ◽  
Feng Wang ◽  
Lingling Lin ◽  
Haigang Guo
Keyword(s):  
Heavy Metals ◽  
Experimental Investigation ◽  
Water Treatment ◽  
Suspended Solids ◽  
Pollutant Removal ◽  
Polluted Water ◽  
Operating Pressure ◽  
Nitrogen Species ◽  
Combined System ◽  
Mg Content

A combined system using nano MgO and nanofiltration (NF) membrane was established to purify polluted water in this experiment. The turbidity, permanganate index, UVA254, colony counts and the concentrations of NO3−, NO2−, NH4+, Fe, Mn and Mg of the effluents from each unit of this combined system were measured to investigate the pollutant removal of this system. Based on the results obtained, the combined nano MgO–NF system could efficiently remove many kinds of pollutants in this experiment, including organic matter, nitrogen species, heavy metals, suspended solids and bacteria. And the effluents could meet the standard of drinking water. Furthermore, increasing the nano MgO dosage could not elevate the removal ratio of the pollutants, but only increase the Mg content of the effluent. Thus, 0.05 g L−1 of nano MgO may be a suitable dosage for 2,000 L of polluted water treatment. Also, the operating pressure of NF membrane had no significant effect on pollutant removal when the operating pressure of NF membrane was increased from 0.3 to 0.9 MPa.

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