scholarly journals Process wastewater treatment with hydrogen-form CST and chabazite zeolite

1998 ◽  
Author(s):  
S.M. DePaoli ◽  
D.T. Bostick
Keyword(s):  
Wastewater Treatment ◽  
Hydrogen Form ◽  
Process Wastewater

scholarly journals The diversity of active microbial groups in an activated sludge process treating painting process wastewater

2020 ◽  
Vol 148 ◽  
pp. 01002
Author(s):  
Herto Dwi Ariesyady ◽  
Mentari Rizki Mayanda ◽  
Tsukasa Ito
Keyword(s):  
Wastewater Treatment ◽  
Microbial Community ◽  
16S Rrna ◽  
16S Rrna Gene ◽  
Activated Sludge ◽  
Biological Treatment ◽  
Rrna Gene ◽  
Activated Sludge Process ◽  
Painting Process ◽  
Process Wastewater

Activated sludge process is one of the wastewater treatment method that is applied for many wastewater types including painting process wastewater of automotive industry. This wastewater is well-known to have high heavy metals concentration which could deteriorate water environment if appropriate performance of the wastewater treatment could not be achieved. In this study, we monitored microbial community diversity in a Painting Biological Treatment (PBT) system. We applied a combination of cultivation and genotypic biological methods based on 16S rRNA gene sequence analysis to identify the diversity of active microbial community. The results showed that active microbes that could grow in this activated sludge system were dominated by Gram-negative bacteria. Based on 16S rRNA gene sequencing analysis, it was revealed that their microbial diversity has close association with Bacterium strain E286, Isosphaera pallida, Lycinibacillus fusiformis, Microbacterium sp., Orchobactrum sp., Pseudomonas guariconensis, Pseudomonas sp. strain MR84, Pseudomonas sp. MC 54, Serpens sp., Stenotrophomonas acidaminiphila, and Xylella fastidiosa with similarity of 86 – 99%. This findings reflects that microbial community in a Painting Biological Treatment (PBT) system using activated sludge process could adapt with xenobiotics in the wastewater and has a wide range of diversity indicating a complex metabolism mechanism in the treatment process.

Sustainable development of wastewater treatment strategies for the food industries

2002 ◽  
Vol 45 (12) ◽  
pp. 315-320 ◽  
Author(s):  
I. Sekoulov
Keyword(s):  
Sustainable Development ◽  
Wastewater Treatment ◽  
Treatment Strategies ◽  
Future Generations ◽  
The Sustainable Development ◽  
Total Cost ◽  
Integrated Production ◽  
Food Industries ◽  
Production Processes ◽  
Process Wastewater

The sustainable development of environmental protection is a newly created philosophy. It means continuous development of better protection of the air, soil, water and resources, used from the industry, to be saved also for future generations. The globalization of the economy is another process, which interferes with environmental ideas, and an equilibrium with the socio-eco-sustainable development is wanted. The industry is subjected to big changes depending on economic development. Thus the treatment plants at the end of the pipe must be constructed with maximum flexibility. A removal of constructed devices, if not necessary, must be considered from the beginning as a possibility. Priority is given to integrated production processes solving wastewater problems directly by production devices. The treatment of the process wastewater streams separately will become more important. The end of the pipe solutions will be less complicated and more reliable. The reuse of valuable waste substances and treated water will reduce the total cost of the treatment plants substantially.

Application of Minihydrocyclones in Methanol-to-Olefin Process Wastewater Treatment

2015 ◽  
Vol 38 (3) ◽  
pp. 504-510 ◽  
Author(s):  
Wen-Jie Lv ◽  
Qiang Yang ◽  
Liang Ma ◽  
Hong-Lai Liu ◽  
Hua-Lin Wang
Keyword(s):  
Wastewater Treatment ◽  
Methanol To Olefin ◽  
Process Wastewater

scholarly journals Treatment of hide liming wastewater by carbon dioxide

2020 ◽  
Author(s):  
Aukse Sliburyte ◽  
Virgilijus Valeika
Keyword(s):  
Carbon Dioxide ◽  
Wastewater Treatment ◽  
Sodium Hydroxide ◽  
Sodium Carbonate ◽  
Sodium Sulphide ◽  
Sulphide Concentration ◽  
Before And After ◽  
Process Wastewater

Results of the investigation of hide liming process wastewater treatment by carbon dioxide are presented in a paper. Comparison of the wastewater characteristics before and after the treatment by carbon dioxide was carried out. It was attempted to regenerate sodium sulphide using three different solutions: 10% solution of sodium carbonate and 5% or 10% solution of sodium hydroxide. The kinetic of sodium sulphide concentration, general alkalinity and pH was established. The solutions with the regenerated sodium sulphide were explored for unhairing of hide. The solution of 10% sodium hydroxide with regenerated sulphides was the mostly suitable for this aim. The properties of unhaired pelt were determined and assessed.

The Application of Epichlorohydrin-Dimethylamine Polymer Flocculant for Tannery Wastewater Treatment

2012 ◽  
Vol 610-613 ◽  
pp. 480-484
Author(s):  
Yan Niu ◽  
Zhi Wen Ding ◽  
Bao Zhen Cheng ◽  
Yong Fang Chen
Keyword(s):  
Wastewater Treatment ◽  
Tannery Wastewater ◽  
Dyeing Wastewater ◽  
Process Wastewater ◽  
Polymer Flocculant

A cationic organic flocculant epichlorohydrin-dimethylamine(EPI-DMA) was employed for the treatment of simulated leather-making process wastewater. The study aims at investigating the flocculation performance of EPI-DMA for the leather dyeing wastewater which contains fat-liquoring agent wastewater and retanning agent wastewater. The results show that decoloration efficiency of EPI-DMA for dyeing wastewater can reach around 90% with proper dosage. For containing retanning agent wastewater, EPI-DMA also has good flocculation performance, but for containing fat-liquoring agent wastewater, flocculation performance of EPI-DMA was poor.

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