نشریه مطالعات علوم محیط زیست
سال سوم شماره 2 (تابستان 1397)

The increasing production of waste, including glass and its unhealthy disposal into the environment, in addition to the loss of national capital, causes the loss of natural resources. Considering the importance of recycling in this research, the economic and environmental aspects of recycling of glass were evaluated from Tehran municipal waste. The total amount of dry wastes in Tehran in 2011 is 416,324,412 and the average daily amount is 1,140,615. Of the total solid waste in Tehran, 4.6% of these wastes are glass waste, with only 2% recycled glass waste. In the past, a major research effort was made at Hong Kong University Polytechnic University to find practical ways to recycle glass waste to produce various concrete products such as concrete blocks, self-compacting concrete. Some of these concrete concrete products have successfully entered the market and attracted much attention. This paper will provide a general overview of the current state of waste management and recycling and the experience of recycling recycled waste in concrete cement products in Tehran.

This is a cross sectional-exploratory and an applied study during 2017 in health-care centers in south of Tehran. In this study, evaluating the 90 checklist for waste management were determined in southern Tehran health centers. In the studied centers, an average of 3.25 kg of waste per day is generated per day, of which 51% is common waste, 28% is infectious waste and 19% is waste and wastes. Only 13.3 percent of all cases have been investigated how to dispose of infectious and normal wastes from one another in the correct and complete manner, according to guidelines and standards. Initial training for waste-related staff has been implemented in only 28% of cases and periodic training in only 8% of cases. The weakness in the separation of wastes and the prevention of the mixing of normal and infectious wastes has led to an increase in the recorded rate of infectious wastes production. The results of the study indicate that managerial and regulatory weaknesses are in the stages of separation, temporary storage and transportation of wastes.

The goal was presented environmental management. Problem were formulated by Swot approach to find smart strategy helping manager make decision using SWOT method which have components extended from SWOT letter strengths ,weakness, opportunities and threats.
A five scale LIKRET designed questionnaire were filled by expertise, internal and external factors were weighted through matrix to find smart SWOT strategy helping manger to find the best managing strategy.
Results show strengths were overcome weakness weighted as an internal factors matrix, people knowing low polluted car was defund as the most important strengths on the other hand opportunities overcome threats weighted through external factor matrix, new national environmental regulations were the most important opportunity.
In the end SO strategy were defined as the best through weighted QSPM matrix means get strengths to take advantage of opportunities. Advertising in the field of environmtal culture and the importance of technical examination were defined as the best.

Tourism is one of the main sources of national income of developed countries and some developing countries. By using various techniques and models, it is possible to identify the potential and constraints of tourism development and to facilitate and speed up the achievement of these goals by providing strategies and solutions. Also, the opinions of 50 officials and experts in the city of Rineh were evaluated about the importance of each factor in the development of tourism. The SWOT model then analyzed the strengths, weaknesses, opportunities, threats and weights of these factors to determine the appropriate strategies for tourism. As a result, using the QSPM matrix, the strategy for public and private investment in tourism and leisure projects in the region with 8.2 points was selected as the most effective strategy for tourism development in the city of Rineh-Larijan. The results show that Tourist Attractions can not be expected to attract tourism and tourism development in the region, Rather, attention should be paid to factors such as proper planning, infrastructure improvement, provision of accommodation and welfare facilities, and the introduction of the area with the use of mass media along with existing attractions.

CuO dandelion-like microspheres were synthesized using a simple and green coprecipitation method. As-prepared CuO microspheres were characterized using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) and diffuse reflectance spectroscopy (DRS). The photocatalytic activity of this nanostructure on the degradation of dye pollution of methylene blue with different concentrations between 10-50 mg/L in presence of H2O2 was investigated under 7 W LED lamp. The studyof results shows that the amount of of degradation of methylene blue is low in the absent of H2O2, and afteradding H2O2, it significantly increased. The amount of required H2O2 was studied. It was found that synthesized nanocatalyst in the presence of a very small amount of H2O2 (50 μL), has the ability to destroy 100% of methylene blue with 20 mg/L concentration.