scholarly journals Water reuse for aquaculture: Comparative removal efficacy and aquatic hazard reduction of pharmaceuticals by a pond treatment system during a one year study

2021 ◽  
pp. 126712
Author(s):  
Ganna Fedorova ◽  
Roman Grabic ◽  
Kateřina Grabicová ◽  
Jan Turek ◽  
Tuyen Van Nguyen ◽  
...  
Keyword(s):  
Water Reuse ◽  
Treatment System ◽  
Hazard Reduction ◽  
One Year

Evaluation of a portable in-house greywater treatment system for potential water-reuse in urban areas

2018 ◽  
Vol 15 (4) ◽  
pp. 309-315 ◽  
Author(s):  
Shashi Kant ◽  
Fouad H. Jaber ◽  
R. Karthikeyan
Keyword(s):  
Urban Areas ◽  
Water Reuse ◽  
Treatment System

Removal of fecal coliforms, somatic coliphages and F-specific bacteriophages in a stabilization pond and reservoir system in arid regions

2003 ◽  
Vol 3 (4) ◽  
pp. 177-184 ◽  
Author(s):  
L. Alcalde ◽  
G. Oron ◽  
L. Gillerman ◽  
M. Salgot ◽  
Y. Manor
Keyword(s):  
Treatment System ◽  
Fecal Coliforms ◽  
Somatic Coliphages ◽  
Stabilization Pond ◽  
Reservoir System ◽  
Viral Indicators ◽  
One Year ◽  
Physical And Chemical ◽  
The City

The contents of FC, somatic coliphages and F-specific bacteriophages were measured in the stabilization pond and stabilization reservoir system of the City of Arad (Israel) in order to determine the efficiency of the treatment process regarding the microorganisms removal. Monitoring was conducted close to one year. Physical and chemical parameters (temperature, pH, BOD5, COD, SS) were also analyzed with the aim of finding factors that affect the microorganisms removal. The field results prove a very good performance of this treatment system. FC, somatic coliphages and F-specific bacteriophages were removed between 4.16 and 5.76 log units, during winter and in between 6.02 and 6.47 log units during summer. The microbial quality of the final effluent complies with the WHO guidelines for unrestricted irrigation. The results also indicate that retention time and temperature seem to be the most important factors for microorganisms removal. F-specific bacteriophages were removed at higher rates than FC and somatic coliphages. Consequently, it is suggested that F-specific bacteriophages might be less adequate viral indicators for this treatment system.

Hybrid organic-inorganic materials designed to clean wash water in photographic processing: Genesis of a sol-gel industrial product: the Kodak Water Saving Treatment System

2002 ◽  
Vol 726 ◽  
Author(s):  
Jean Guilment ◽  
Didier Martin ◽  
Olivier Poncelet
Keyword(s):  
Silver Halide ◽  
Sol Gel ◽  
Water Saving ◽  
Inorganic Materials ◽  
Wash Water ◽  
Treatment System ◽  
Environmental Laws ◽  
System Characterization ◽  
Compliance With The Law ◽  
One Year

AbstractEnvironmental laws concerning the water are becoming more and more stringent year after year in European Union (AT2950 France, Legge Merli in Italy). The classical silver halide photoprocessing requires at least 3 steps which are the development, the fixing and the wash. The washing step uses a large amount of water which is discarded in the sewer. By July 2000 a new French regulation imposed that the volume of wash water has to be divided by 5 and the nature of pollutants (silver in different species) has to be maintained below 1 mg/L. The Kodak Water Saving Treatment System has been designed to help our customers to be in compliance with the law. This system has two functions, the release of a biocide cocktail and the trapping of silver. Two aluminosilicate gels (imogolite -like material) allow the treatment to occur, the first one releases biocides in the water flow and allows the processor to remain clean, the second one which is an hybrid organic-inorganic composite (imogolite modified by a controlled hydrolysis of a mercaptoalkyl silicium alkoxide) allows to trap silver. These gels are extremely robust versus time and chemical environment (pH). This paper will describe the synthetic way, the gel system characterization (Raman) and the obtained performances in various configurations after one year on the market. Other applications of these hybrid organic -inorganic composites in photographic fields will be also discussed.

Development of an Advanced Treatment System using Biofiltration and an Ozone-AOP for Agricultural Water Reuse

2014 ◽  
Vol 2014 (14) ◽  
pp. 6228-6236
Author(s):  
Yong Joon Yune ◽  
Min Ki Jung ◽  
In Geun Park ◽  
Ho Jae Hwang ◽  
Dae Hwan Rhu ◽  
...  
Keyword(s):  
Water Reuse ◽  
Treatment System ◽  
Advanced Treatment ◽  
Agricultural Water

Ecological wastewater treatment system: Management approach to solve sanitation and water problems

2021 ◽  
Vol 7 (1) ◽  
pp. 80-86
Keyword(s):  
Wastewater Treatment ◽  
Water Reuse ◽  
Environmental Concern ◽  
Cost Effective ◽  
Treatment System ◽  
Management Approach ◽  
Wastewater Management ◽  
Vegetation Growth ◽  
Social Growth ◽  
Wastewater Treatment System

Wastewater contains various types of pollutants, such as nutrients, solids, organic carbon, metals, inorganic salts, pathogens, etc. Therefore, effective wastewater treatment is crucial for public health as well as for environmental concern. On the other hand, water management with limited water resources is a great challenge in most countries. The freshwater shortage is seriously affecting the economic and social growth of developing nations. An ecological wastewater treatment system is a concept towards ecologically and economically sounds wastewater management. Water and organic nutrients in wastewater consider as a resource and can reuse and recycle in agriculture. The study reviewed the principles and concepts of the ecological wastewater treatment system and a case study of the ecological treatment system by growing economic vegetation. A hybrid constructed wetland (CW) system was used to investigate the performance. The CW system showed high removal efficiency for TP (total phosphorus), NH4 (ammonium), and TN (total nitrogen). The removal efficiencies were 97%, 75%, and 64% for TP, NH4-N, and TN, respectively. Ecological wastewater treatment system is cost-effective, and energy-saving also offers nutrients recycling, water reuse, recreation activities, and vegetation growth.

Estimation of Pathogen Removal in an Advanced Water Treatment Facility Using Monto Carlo Simulation

1999 ◽  
Vol 40 (4-5) ◽  
pp. 223-233 ◽  
Author(s):  
A. Olivieri ◽  
D. Eisenberg ◽  
J. Soller ◽  
J. Eisenberg ◽  
R. Cooper ◽  
...  
Keyword(s):  
Water Treatment ◽  
Water Reuse ◽  
Enteric Viruses ◽  
Treatment System ◽  
Indicator Organisms ◽  
The Public ◽  
Treatment Train ◽  
Microbial Agents ◽  
Final Effluent ◽  
Entire Treatment

Interest in water reuse for potable purposes has heightened the significance of evaluating the potential presence of microbial agents in treated water. Evaluating the public health risk from microbial agents in water after advanced water treatment (AWT) requires an estimate of the effectiveness and reliability of the treatment system in removing microbial agents. Indicator organisms such as total and fecal coliform do not provide sufficient basis to characterize the performance of the treatment system relative to the removal of pathogenic organisms such as enteric viruses and parasitic agents. Seeding studies provide an alternative experimental approach. However, when treatment systems are challenged using more specific indicators for enteric viruses, the results are often inconclusive because the organisms are reduced to non-detectable levels after the first few unit processes. In this study we provide a mathematical approach for estimating the effectiveness of the entire treatment train with respect to removal and/or inactivation of microbial agents. These estimates are insightful since standard monitoring of final effluent consistently yielded non-detectable results.

scholarly journals 2-D Modeling to Understand the Design Configuration and Flow Dynamics of Pond-in-Pond (Pip) Wastewater Treatment System for Reuse

2021 ◽  
Author(s):  
Kushal Adhikari ◽  
Clifford Fedler ◽  
Alireza Asadi
Keyword(s):  
Wastewater Treatment ◽  
Water Scarcity ◽  
Water Reuse ◽  
Low Cost ◽  
Wastewater Reuse ◽  
Flow Dynamics ◽  
Treatment System ◽  
Treatment Technology ◽  
Modeling Tools ◽  
Lower Velocity

Water reuse for irrigation is increasingly recognized as an essential and economical strategy in areas with water scarcity. A simple, low-cost, low-maintenance, and highly efficient Pond-In-Pond (PIP) treatment system can be used for wastewater reuse. PIP is a treatment technology in which two types of ponds -- anaerobic and aerobic -- are combined into a single pond and consist of a deeper inner section entirely submerged within the outer pond. Previous studies on PIPs and PIP-like systems have reinforced the potential for reuse through promising performance results with BOD removal over 80% and a reduction in land area requirements by approximately 40%. Yet, no prior efforts have been made to understand the performance mechanism of such systems. This study makes use of two, 2-D modeling tools in developing a fundamental understanding of PIP flow dynamics and the expected performance. The modeling results showed that the PIP configuration offers improved flow diversion along with reduced flow velocity. Additionally, the PIP retained approximately 17% more (p<0.05) particles than the traditional pond with most of the particles concentrated within the inner pond. Lower velocity and the higher solids retention in the PIP thus allowed for better treatment performance compared to traditional ponds. The findings from this study can be used as preliminary data for future in-depth investigations of the PIP system leading toward effective and optimal designs. This will help address the major societal concern of water scarcity with low-cost and effective wastewater treatment.

DEVELOPMENT OF A NOVEL WASTEWATER TREATMENT SYSTEM FOR WATER REUSE APPLICATION

2003 ◽  
Vol 2003 (5) ◽  
pp. 686-701
Author(s):  
Robert Sharp ◽  
Grant Heslin ◽  
Nita Mehta ◽  
Martin Dolphin
Keyword(s):  
Wastewater Treatment ◽  
Water Reuse ◽  
Treatment System ◽  
Wastewater Treatment System
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