In this study, the approach of a sustainable livelihood framework following the guidance of the Department for International Development (DFID) is used to assess the livelihoods of people in rural areas of Tan Phuoc district, Tien Giang province. This is one of the acid sulphate soil areas of the Mekong Delta. Sustainable livelihood framework according to Department for International Development in the study will consider the assets of Tan Phuoc district people to ensure livelihoods including human capital, physical capital, financial capital, natural capital, and social capital. The results show that most of the capital for developing livelihoods of people in this area is poor (natural capital, human capital, social capital, financial capital), only physical capital is considered to meet the current development needs. They are the basis for proposing development orientations for Tan Phuoc district in the future, including socio-economic development, labor quality improvement and the number of professionally trained people. Besides, there are specific s upport policies for people and there are many sources of capital to help people access policies easily. To solve this problem, first of all, it is necessary to develop development plans of regions according to natural conditions, continue to improve the skills of local communities and provide specific support policies for livelihood activities. Attract many different sources of investment capital for the locality so that people can easily access, improve the income of local people in the future, especially need a population development strategy corresponding to the development conditions of the district. The analysis is based on aggregate collected data on the different types of livelihoods in the province, so they are of great overall value. However, this is also the basis for conducting detailed studies and investigations for further studies with the aim of having accurate information and correct assessment of the current livelihood status of each district and livelihood group.
The purpose of this study is to reuse shrimp pond bottom sludge for industrial-scale organic fertilizer production, to reduce emissions from shrimp farming, and protect the environment. Sludge from the bottom of shrimp ponds is collected through channel settling with a filter net of 0.25 millimeters in size, rainwater is used to wash the salt content in the sludge of shrimp ponds. When the EC (Electrical Conductivity) of the sludge drops below 4 mS / cm, the sludge is mixed with dry straw at the rate of 1 ton of sludge with 250 kg of straw. The products of this rice straw and sludge mixing process are bio-fermented in two phases including anaerobic phase and aerobic phase. The results showed that the sludge-based fertilizers meet national technical regulation QCVN 01- 189: 2019/BNNPTNT. Of quality parameters, total organic carbon, macronutrients (N, P2O5, K2O), trace metals (Zn, Cu), and other heavy metals (Pb, Cd) are within the regulation limits. The paper also shows the potential of reusing shrimp pond bottom sludge for industrial-scale organic fertilizer production, with the possibility of utilizing nutrients contained in the sludge supplied to crops, especially reducing environmental pollution from intensive shrimp farming.
This study is to design an integrated eco-agricultural system for waste treatment in the acidic soil areas in the Mekong Delta. The system is based on recycling all of the materials (from the inputs, outputs, and wastes) under conditions of acidic soil towards zero emissions and maintaining sustainability for farmers' livelihood. The system is demonstrated at Vo Van Tham's farm in Thanh An Commune, Thanh Hoa District, Long An Province. The cost investment is 80,000,000 VND, and the cost is 60,000,000 VND for operating per year. The results show that the proposed system has benefits for the environment, for example wastewater is collected and treated at is178 m3/day, reduce the emission of 756 tons CO2t/year. 50% the amount of pig manure (about 3 tons/day) is separated from pig shed discharges entering the biogas system. It also helps to increase household income (the expected income is about 160,000,000 VND/year, and the payback period is less than 1 year). In addition, solutions are used for alleviating soil acidity level, increase soil pH, and reducing aluminum toxicity in the area. This can help utilize difficult conditions of the acidic soil. Therefore, the proposed system can be applied widely for surrounding areas with similar livelihood activities, and natural conditions.
The purpose of this article is to develop a framework of a tool for supporting the rapid Cleaner production assessment (CPA) coupling to Energy savings (ES) for the industries. On the basis of the integration of the methods such as Best available techniques (BAT), analysis of technology scheme, material and energy balances etc, this study develops a framework of a tool for rapid assessment comprising of 3 modules: “Input of data”, “Material and energy balances” and “Assessment of potentials for cleaner production and energy savings”. In a case study, a rapid assessment tool for Cleaner production coupling to Energy savings is developed for the metal production industry. The results obtained from the case study shows that the data from material and energy balances are presented fully in the illustrated technology process, and the objects subjected to improvement are identified. There are 150 objects and/or positions needing improvement in which 16 are involved with thermal processess, and the rest are for the electrical motors. The solution for each of these objects is also recomended. The disadvantages of this tool is it is unable to assess the investment cost as well as the return rate of the solutions that could be good points for the further research.
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