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کاربرد نوع شرط:
- جایگاه : پژوهشی
- مجله: Journal of Applied Research in Water and Wastewater
- نوع مقاله: Journal Article
- کلمات کلیدی: Waste Management,Sustainable Development,SWOT,QSPM,strategic management
- چکیده:
- چکیده انگلیسی: Sustainable development highly depends on how we manage various parts of the industry, and it plays a significant role in the sewage purge system to pay attention to the clutch reducer elements. Complementary procedures and technologies are needed to resolve water governance concerns, urging a rapid alteration of the economics, engineering, and administration agendas to determine our generation's water challenges. Ekbatan Wastewater Treatment Plant (EWTP) confronts several problems that necessitate comprehensive and strategic planning and management. An analysis of strength-weakness-opportunity-threat (SWOT) and quantitative strategic planning matrix (QSPM) methods were used to investigate strategic factors. For scoring the proposed strategies, a group of experts who are familiar with environmental management was selected. Environmental factors were recognized and investigated. According to experts' opinions, important and unimportant factors were identified and prioritized. The most effective strategy to further strengthen the current situation is "expanding the treatment plant activities such as internal infrastructure and urban utilities to manage more waste."
- انتشار مقاله: 07-05-1399
- نویسندگان: Mohammad Ali Zahed,Aeen Eftekhari,Hassan Hoveidi,Faranak Hejabi
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Applied Biotechnology Reports
- نوع مقاله: Journal Article
- کلمات کلیدی: plant growth,Phytoremediation,sunflower,Gasoline,Spiked Soil
- چکیده:
- چکیده انگلیسی: Phytoremediation has gained increasing attention in recent years because of its ability to clean up and redevelop brownfield sites. Petroleum hydrocarbon-contaminated sites are among most prevalent industrial sites in Iran as one of the top oil producers in the world, which are in great need of remediation to prevent associated environmental and human health risks. A greenhouse study was conducted to identify the tolerance of sunflower (Helianthus annus L.) and its growth parameters under various scenarios. Additionally, remediation potential of sunflower in spiked soil with low to moderately gasoline-contaminated soil was evaluated. Results indicated that sunflower is a tolerant plant species in low to moderately gasoline-contaminated soil with remarkable biomass establishment in contaminated soil and acceptable phytoremediation potential. Sunflower was found to tolerate gasoline contamination up to the maximum applied concentration of 5000 mg/kg. However, sunflower biomass and height slightly decreased in presence of gasoline in soil which were not significant in most cases (P>0.05). Significant reduction of gasoline under the influence of sunflower was obtained in all vegetated treatments when compared to non-vegetated treatments (P<0.05). Phytoremediation effectiveness of sunflower did not vary significantly with increasing contamination level in soil (P>0.05). Results of the present research indicated that gasoline content of soil cannot be considered as a controlling factor affecting phytoremediation potential of sunflower when soil is polluted with low to moderate levels of gasoline. Soil remediation with sunflower can be considered as a promising approach to manage moderately gasoline-contaminated sites.
- انتشار مقاله: 25-06-1395
- نویسندگان: Ali Daryabeigi Zand,Hassan Hoveidi
- مشاهده
- جایگاه : پژوهشی
- مجله: Journal of Applied Biotechnology Reports
- نوع مقاله: Journal Article
- کلمات کلیدی:
- چکیده:
- چکیده انگلیسی: Colloids are small suspended particles in water which cannot be settled or removed naturally due to their light weight and stability. These particles pose some degree of stability and cause water turbidity. There are some concerns regarding colloid removal efficiency in water treatment plants of Iran. In this study, the effectiveness of aluminium sulfate and poly-aluminum chloride was evaluated at different pH values and coagulant dosage in order to find optimal operational conditions for low to high turbidity waters. The influence of lime, as a coagulant aid, on coagulation process was also studied. A set of jar test experiments was conducted to find the optimal pH and coagulant dosage. Results demonstrated that coagulation process can assure turbidity removal from low to medium turbidity waters effectively using relatively low levels of aluminium sulfate and poly-aluminum chloride (10 to 20 mg/L). Turbidity removal efficiency still remained high when the initial turbidities of water were increased to 500 and 1000 NTU. Results showed that turbidity removal is dependent on pH, coagulant dosage, as well as initial turbidity of water for both used coagulants. The highest turbidity removal efficiency was within 82.9-99.0% for alum and 93.8-99.6% for poly-aluminum chloride over the applied range of turbidity. Both applied coagulants demonstrated promising performance in turbidity removal from water; however, poly-aluminum chloride showed better performance compared to aluminium sulfate. The results of the current study can be used as a baseline data for drinking water treatment facilities which uses these two types of coagulants.
- انتشار مقاله: 24-06-1394
- نویسندگان: Ali Daryabeigi Zand,Hassan Hoveidi
- مشاهده
- جایگاه : پژوهشی
- مجله: Environmental Energy and Economic Research
- نوع مقاله: Journal Article
- کلمات کلیدی: Iran,Desalination,Economic Evaluation,RO & MEH,COMFAR
- چکیده:
- چکیده انگلیسی: The primary objective of desalination research is the development of a way to produce fresh water at lower cost. The present study investigated two freshwater production methods of Reverse Osmosis (RO) and Multi-Effect Humidification (MEH) (artificial distillation), and analyzed them from an economic standpoint, and subsequently pointed out the important and effective factors in decreasing saltwater desalination expenditure for each one of the mentioned units. Different aspects of these units were investigated as well. However, all the prices are assumed with the current condition and expenses in Sistan Baluchestan province, Iran. The results from economic analyses, obtained employing COMFAR III, showed that, in regions where locals have access to local grid, application of RO unit has no economic justification, while MEH units, powered by solar energy, are more economic in remote regions receiving adequate solar irradiation. However, the water produced by RO can be purchased at 0.02 $/lit, and by solar MEH unit (Respect to introduced characterization), at 0.032 $/lit. Although, the sensitive analysis of IRRs’ variation in proportion to three factors namely sales income, fixed capital expenditure and operational expenditure were conducted.
- انتشار مقاله: 09-03-1396
- نویسندگان: Hassan Hoveidi,Hossein Vahidi,Seyed Masoud Tayefeh CheraghAli,Alireza Aslemand
- مشاهده