Optimized Environmental Conditions for Petroleum Degradation of Strain B1 by Orthogonal Test

2011 ◽  
Vol 393-395 ◽  
pp. 1308-1312
Author(s):  
Chun Xu Wu ◽  
Hong Tao Zhang ◽  
Bei Hai Zhou ◽  
Lei Gao ◽  
Hao Deng ◽  
...  
Keyword(s):  
Pseudomonas Aeruginosa ◽  
Wastewater Treatment ◽  
Environmental Impact ◽  
Environmental Conditions ◽  
Treatment Plant ◽  
Orthogonal Test ◽  
Oil Field ◽  
Impact Factors ◽  
Factors Influencing ◽  
Biodegradation Efficiency

A strain B1 belonging to Pseudomonas aeruginosa with high petroleum-degrading efficiency was isolated from Dagang oil-field wastewater treatment plant. More than 80% petroleum-degrading efficiency was obtained at 32°C, 200 r/min. According to the orthogonal test, the environmental impact factors influencing petroleum-degrading efficiency of the strain were investigated. The optimum environmental conditions for petroleum degradation were as follows: temperature was 40 °C, pH 8.0, oil inoculation 1 mL, nitrogen content 0.05 g. And the biodegradation efficiency of the strain reached 86.1%.

scholarly journals Draft Genome Sequence of Exiguobacterium sp. KKBO11, Isolated Downstream of a Wastewater Treatment Plant in Houston, Texas

2016 ◽  
Vol 4 (4) ◽  
Author(s):  
Rupa Iyer ◽  
Ashish Damania
Keyword(s):  
Wastewater Treatment ◽  
Stress Response ◽  
Environmental Conditions ◽  
Wastewater Treatment Plant ◽  
Copy Number ◽  
Draft Genome ◽  
Treatment Plant ◽  
Number Of Genes ◽  
Adverse Environmental Conditions ◽  
Rna Genes

Exiguobacterium sp. KKBO11, isolated near a wastewater treatment plant in Houston, Texas, USA, possesses a large number of genes involved in stress response and transport critical to survival in adverse environmental conditions. An unusually high copy number of RNA genes also possibly contributes to this microorganism’s versatility by promoting nutrient uptake.

scholarly journals A study on wastewater treatment sludge utilization in Bulgarian agriculture

2021 ◽  
Vol 5 (4(61)) ◽  
pp. 35-44
Author(s):  
Hrabrin Bachev ◽  
Bozhidar Ivanov
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Early Stage ◽  
Impact Factors ◽  
The European Union ◽  
Urban Wastewater ◽  
Effective Utilization ◽  
Factors Influencing ◽  
Effective Inclusion ◽  
Urban Wastewater Treatment

The issue of sludge utilization from wastewater treatment in agriculture is an important socio-economic and environmental problem in the European Union (EU) and Bulgaria. It is becoming topical issue along with constantly growing amount of produced wastewater treatment sludge, deficiency of lands for their safe disposal, protests of population and interests’ groups, tightening EU restrictions, etc. Furthermore, studies on wastewater treatment sludge utilization are multiplying in relations with their «transformation from wastes into products» and effective inclusion in supply chains and circular economy. Despite their relevance, in-depth studies of the diverse effects and critical factors of wastewater treatment sludge utilization in Bulgarian agri-food chain are at an early stage, mostly focusing on agronomic, economic and/or environmental ones. Thus, the object of research is the effective utilization of sludge from wastewater treatment in Bulgarian agriculture. In the course of the research it is used a qualitative analysis of regulations, and institutional and organizational structure, as well as surveys with managers and experts of urban wastewater treatment plants, and farmers applying and not-using sludge from wastewater treatment in their holdings. As a result of the study, the institutional, political, organizational, personal, educational, informational, social, economic, and environmental factors influencing the utilization of sludge in agriculture in two major regions of the country (Sofia and Burgas) are identified. Impact factors are generally divided into two types: factors influencing the behavior of agents, and factors determining the type and extent of the effects of sludge use in agriculture. In the future, the proposed approach has to be extended and deepen to establish the economic, sectoral and regional specificities on the basis of more representative information from all participants and interested parties in the effective utilization of wastewater treatment sludge.

scholarly journals Environmental impact assessment for a meat processing industry in Turkey: wastewater treatment plant

2018 ◽  
Vol 13 (3) ◽  
pp. 692-704
Author(s):  
Pelin Soyertaş Yapıcıoğlu
Keyword(s):  
Wastewater Treatment ◽  
Environmental Impact ◽  
Impact Assessment ◽  
Environmental Impact Assessment ◽  
Wastewater Treatment Plant ◽  
Treatment Plant ◽  
Anaerobic Sludge ◽  
Meat Processing ◽  
Treatment Scenario ◽  
Processing Industry

Abstract The meat processing industry has many unfavorable impacts to the environment in Turkey. One of these impacts is wastewater treatment. Meat processing wastewater contains large amounts of proteins, fats, nutrients such as nitrogen, and pathogenic and non-pathogenic microorganisms and viruses. The high organic and hazardous content of wastewater causes environmental challenges for the flora and fauna in receiving water bodies unless it is treated adequately. Due to these reasons, the treatment process to be implemented should be the least damaging to the environment. In this study, three treatment scenarios that include a UASB (upflow anaerobic sludge bed) reactor (Scenario-1), an advanced oxidation process that includes UV/H2O2 treatment (Scenario-2) and a membrane bioreactor (Scenario-3) have been studied for a meat processor's wastewater treatment plant. For these three scenarios, an environmental impact assessment was undertaken using the Fine-Kinney method. The evaluation results revealed that Scenario-2 has the smallest environmental impact value with 475. Scenario-1 has the highest total environmental impact value as 765. Scenario-3's environmental impact value is 637. According to the evaluation results, the UV/H2O2 process is the most applicable technology for wastewater treatment in Turkey's meat industry.

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