scholarly journals Sensitivity analysis of parameters affecting suspended growth in industrial wastewater treatment plants; with emphasis on economic performance criteria

2021 ◽  
pp. 038-044
Author(s):  
Gheibi Mohammad ◽  
chahkandi Benyamin ◽  
Kian Zahra ◽  
Takhtravan Amir ◽  
Aghlmand Reza
Keyword(s):  
Sensitivity Analysis ◽  
Wastewater Treatment ◽  
Economic Performance ◽  
Industrial Wastewater ◽  
Wastewater Treatment Plants ◽  
Performance Criteria ◽  
Industrial Wastewater Treatment ◽  
Suspended Growth

Workers' Exposure to Airborne Bacteria and Endotoxins at Industrial Wastewater Treatment Plants

AIHAJ ◽  
1994 ◽  
Vol 55 (11) ◽  
pp. 1055-1060 ◽  
Author(s):  
Sirpa Laitinen ◽  
Juhani Kangas ◽  
Marjut Kotimaa ◽  
Jyrki Liesivuori ◽  
Pertti J. Martikainen ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Wastewater Treatment Plants ◽  
Airborne Bacteria ◽  
Industrial Wastewater Treatment

scholarly journals Ecophysiology of different filamentous Alphaproteobacteria in industrial wastewater treatment plants

Microbiology ◽  
2006 ◽  
Vol 152 (10) ◽  
pp. 3003-3012 ◽  
Author(s):  
Caroline Kragelund ◽  
Yunhong Kong ◽  
Jaap van der Waarde ◽  
Karin Thelen ◽  
Dick Eikelboom ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Wastewater Treatment Plants ◽  
Control Strategies ◽  
Bacterial Species ◽  
Enzymic Activity ◽  
Specific Gene ◽  
Industrial Wastewater Treatment ◽  
Potential Control ◽  
Species Specific

The ecophysiology of five filamentous species affiliated to the Alphaproteobacteria was investigated in industrial activated sludge systems. The five species, ‘Candidatus Alysiosphaera europaea’, ‘Candidatus Monilibacter batavus’, ‘Candidatus Alysiomicrobium bavaricum’, ‘Candidatus Sphaeronema italicum’ and Meganema perideroedes, are very abundant in industrial wastewater treatment plants and are often involved in bulking incidents. The morphology of these filamentous bacterial species resembled Eikelboom's Nostocoida limicola, or Type 021N, and could only be correctly identified by using fluorescence in situ hybridization (FISH), applying species-specific gene probes. Two physiological groupings of the five species were found using microautoradiography combined with FISH. Group 1 (‘Ca. Monilibacter batavus' and ‘Ca. Sphaeronema italicum’) utilized many short-chained fatty acids (acetate, pyruvate and propionate), whereas Group 2 (‘Ca. Alysiosphaera europaea’, ‘Ca. Alysiomicrobium bavaricum’ and Meganema perideroedes) could also exploit several sugars, amino acids and ethanol. All species had polyhydroxyalkanoate granules present and several of the species had a very large storage capacity. No activity was found under strict anaerobic conditions, while uptake of substrate was observed in the presence of nitrate or nitrite as potential electron acceptor. However, for all species a reduced number of substrates could be consumed under these conditions compared to aerobic conditions. Only a little exo-enzymic activity was found and nearly all species had a hydrophobic cell surface. Based on knowledge of the ecophysiological potential, control strategies are suggested.

Biochar Synthesis for Industrial Wastewater Treatment: A Critical Review

2020 ◽  
Vol 1008 ◽  
pp. 202-212
Author(s):  
Andy G. Kumi ◽  
Mona G. Ibrahim ◽  
Mahmoud Nasr ◽  
Manabu Fujii
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Wastewater Treatment Plants ◽  
Industrial Effluent ◽  
Pollutant Removal ◽  
Environmental Benefits ◽  
Effluent Treatment ◽  
No Production ◽  
Industrial Wastewater Treatment ◽  
Characterization Methods

Excess sludge generated from wastewater treatment plants (WWTPs) can cause negative impacts on human health, water bodies, aquatic plants, and soil quality. However, the produced sludge could be appropriately managed to obtain various economic and environmental benefits. One of the feasible and practical options of sludge management is the synthesize of biochar via oxygen-limited pyrolysis. The use of biochar adsorbent for pollutant removal offers various advantages such as high adsorption capability, low operating and chemical costs, no production of toxins. Hence, this study addresses the applications of sewage sludge-derived biochar for industrial wastewater treatment. The methods of sludge collection, drying, pulverization, and pyrolysis are illustrated. Biochar characterization methods (SEM, EDX, XRD, and FTIR analyses) and mechanisms of the adsorption process are described. The sludge-derived biochar could be used as an adsorptive material for industrial effluent treatment. Recommendations for future studies that could enhance the adsorption capacity of biochar and modified-biochar are given.

Molecular monitoring of bulking sludge in industrial wastewater treatment plants

2002 ◽  
Vol 46 (1-2) ◽  
pp. 551-558 ◽  
Author(s):  
J. van der Waarde ◽  
J. Krooneman ◽  
B. Geurkink ◽  
A. van der Werf ◽  
D. Eikelboom ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Textile Industry ◽  
Industrial Wastewater ◽  
Wastewater Treatment Plants ◽  
In Situ Hybridisation ◽  
Filamentous Bacteria ◽  
Molecular Monitoring ◽  
Industrial Wastewater Treatment ◽  
Operational Conditions ◽  
Filamentous Microorganisms

Fluorescent In Situ Hybridisation (FISH) was used to monitor the presence of filamentous microorganisms in industrial wastewater treatment plants (WWTPs). Monitoring with a restricted set of FISH probes in WWTPs from potato industry showed growth and decline of Thiothrix populations that could be linked to operational procedures. In a follow up project new FISH probes were developed for filamentous bacteria in industrial WWTPs and 70 WWTPs were analysed for presence of these filaments. Several newly described species of filamentous bacteria appear to be common and dominant in industrial WWTPs. Monitoring of a WWTP from textile industry showed growth and decline of one of these organisms when operational conditions in the plant were varied. The present paper demonstrates that bulking sludge in industrial wastewater treatment plants can effectively be monitored using a combination of standard chemical analyses and the FISH technique.

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