scholarly journals Tecnologias descentralizadas apropriadas para tratamento de esgoto doméstico em áreas rurais

ForScience ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. e00995
Author(s):  
Mariza Silva Bitarães Dias ◽  
Alex Cardoso Pereira

A ausência de sistemas de tratamento de esgoto doméstico é uma das principais causas de insalubridade e degradação ambiental, além de ser uma forte ameaça à segurança alimentar das famílias rurais brasileiras. O estudo teve como objetivo fornecer subsídios para a elaboração de um programa de implantação de tratamento de esgoto doméstico na área da microbacia hidrográfica do Córrego do Mato, situado na comunidade rural São Braz, Simonésia, Minas Gerais. Foi investigada a situação do abastecimento de água e do esgotamento sanitário de 67 domicílios. Foi encontrado um cenário preocupante em relação à disposição final do esgoto doméstico, sendo que 96% dos domicílios estão em situação inadequada - disposição in natura em cursos d’água ou fossas rudimentares. Foram propostas alternativas adequadas para o tratamento do esgoto doméstico de acordo com as necessidades e condições locais da área de estudo. As alternativas escolhidas são tecnologias sociais e ecológicas com replicação e já implantadas em outras localidades rurais. Palavras-chave: Águas residuárias. Desenvolvimento rural. Bacia hidrográfica. Decentralized technologies appropriate for treating domestic sewage in rural areas: case study for a rural community in Simonesia - Minas Gerais Abstract The absence of domestic sewage treatment systems is one of the main causes of unhealthy and environmental degradation, in addition to being a strong threat to the food security of Brazilian rural families. The study aimed to provide subsidies for the elaboration of a program for the implementation of domestic sewage treatment in the area of the watershed of the Córrego do Mato, located in the rural community of São Braz, Simonésia, Minas Gerais. The situation of water supply and sanitation for 67 households was investigated. A worrying scenario was found in relation to the final disposal of domestic sewage, with 96 % of households being in an inadequate situation - in natura disposal in water courses or rudimentary cesspits. Appropriate alternatives have been proposed for the treatment of domestic sewage according to the needs and local conditions of the study area. The alternatives chosen are social and ecological technologies with replication and already implemented in other rural locations. Keywords: Wastewater. Rural development. Hydrographic basin.

Energies ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1398
Author(s):  
Xinfang Wang ◽  
Rosie Day ◽  
Dan Murrant ◽  
Antonio Diego Marín ◽  
David Castrejón Botello ◽  
...  

To improve access to affordable, reliable and sustainable energy in rural areas of the global south, off-grid systems using renewable generation and energy storage are often proposed. However, solution design is often technology-driven, with insufficient consideration of social and cultural contexts. This leads to a risk of unintended consequences and inappropriate systems that do not meet local needs. To address this problem, this paper describes the application of a capabilities-led approach to understanding a community’s multi-dimensional energy poverty and assessing their needs as they see them, in order to better design suitable technological interventions. Data were collected in Tlamacazapa, Mexico, through site visits and focus groups with men and women. These revealed the ways in which constrained energy services undermined essential capabilities, including relating to health, safety, relationships and earning a living, and highlighted the specific ways in which improved energy services, such as lighting, cooking and mechanical power could improve capabilities in the specific context of Tlamacazapa. Based on these findings, we propose some potential technological interventions to address these needs. The case study offers an illustration of an assessment method that could be deployed in a variety of contexts to inform the design of appropriate technological interventions.


Author(s):  
Yoshimi Kataoka

Many Japanese researchers have suggested that both Japanese and Western societies are experiencing individualization of the family; whether or not this is the case in Japanese rural farming villages remains unclear. The purpose of this chapter is to investigate this question using a case study. The research involves interviews of families living in rural areas within the Shimane Prefecture, each engaged in agriculture, forestry, and/or fishery. The emerging picture is that it is increasingly difficult to find traditional Ie in rural farming villages today. For the rural farming family, individual freedom is important. However, respecting individuals seems to occur for the purposes of maintaining unity of the family as a group rather than for the purpose of individual self-realization. Therefore, emphasizing individual freedom does not mean conflict among family members (i.e., enforcement of competition with other family members or compromises by them).


Author(s):  
Jiangyan Lu ◽  
Yushuai Lang

To summarize the problems and needs of the current rural life, identify the pathway that suits the sustainable development of rural areas, and propose the design concept and method that meet the current rural ecological design requirements. Use the organized research approaches. This chapter makes a case study of Nanma Village, provides the theoretical and design practice reference for the rural sustainable development in China, and establishes the knowledge and methodology system that meets the requirements of rural sustainable development. This chapter proposes the design concept and method in line with the current requirements of rural ecological design, suggests that the current village design should be adapted to “local conditions,” and indicates that the harmonious development between human and environment will be a new possible direction for the rural sustainable development and design in future.


Energies ◽  
2019 ◽  
Vol 12 (5) ◽  
pp. 872 ◽  
Author(s):  
Rasaq Lamidi ◽  
Long Jiang ◽  
Yaodong Wang ◽  
Pankaj Pathare ◽  
Marcelo Aguilar ◽  
...  

Over 90% of global yam production is from West Africa where it provides food and income for above 300 million smallholders’ farmers. However, the major challenge of yam is 10–40% post-harvest losses due to the lack of appropriate storage facilities. This paper assesses a biogas-driven cogeneration system, which could supply electricity and cold storage for ‘yam bank’ within a rural community. Considering 200 households’ Nigerian village as a case study, crop residues are used as anaerobic digestion feedstock to produce biogas, which is subsequently used to power an internal combustion engine. Result shows that the system could store 3.6 tonnes of yam tubers each year and provide enough electricity for domestic and commercial activities. At the current electricity tariff of USD0.013·kWh−1 for rural areas, the system is unable to payback during its life span. The proposed USD0.42·kWh−1 by Nigerian Rural Electrification Agency seems good with less than 3 years discounted payback period but brings about extra burden on poor rural households. Based on the income from cold storage, electricity tariff of USD0.105·kWh−1 with an interest rate of 4% is suggested to be reasonable which results in 6.84 years discounted payback period especially considering non-monetary benefits of renewable energy system.


2012 ◽  
Vol 573-574 ◽  
pp. 511-515 ◽  
Author(s):  
Peng Huang ◽  
Yao Guang Guo ◽  
Xiao Yi Lou ◽  
Xue Wu Yuan ◽  
Shuang Jie Xu ◽  
...  

Due to the relatively unprogressive economic and social development of Songjiang rural areas of Shanghai city in China, the degree of rural domestic sewage treatment was relatively weak and hysteretic. The rural sewage treatment systems of Songjiang district were investigated through field survey. Finally, the systems of soil infiltration-constructed wetland and combinatorial biofilter, with obvious advantages, were proposed to popularize in Songjiang rural areas more suitably.


2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Sunna Kovanen

AbstractThe article presents results from a research on the relevance and challenges of collaboration for the long-term sustainability of rural community enterprises. The study relies on Communities of Practice and Degrowth theories. Methods include semi-standardised interviews and focused ethnography in two community enterprises in rural areas in Germany and Portugal. Main results confirm the relevance of collaborative relations with residents, public sector, peer organisations and within the teams for both stability and transformative power of the organisations’ work. Respectful handling of privileges and balance in participation and professionalisation support sustainability, whereas institutional stagnation and involuntary degrowth may risk it.


2018 ◽  
Vol 7 (3.20) ◽  
pp. 270
Author(s):  
Rajermani Thinakaran ◽  
Rosmah Ali ◽  
Wan Nor Al-Ashekin Wan Husin

In students’ learning process, self-efficacy plays an important part. In Malaysia, there are a number of researches on students’ self-efficacy. However, none of the studies focuses on undergraduate students’ computer self-efficacy from the rural areas. This article presents a quantitative research on undergraduate students’ perceived computer self-efficacy. A total of 128 first semester undergraduate students participated in the survey, employing a 27-item questionnaire measuring computer self-efficacy. The items were pilot-tested before being administered to the respondents. Outcome of the research show that computer self-efficacy level is high for basic and advanced skills. The result of the research shows that rural community has accepted the ICT as part of their lifestyle.   


2006 ◽  
Vol 1 (1) ◽  
Author(s):  
Ibrahim Ngah

This paper examines the extent to which sustainable development principles are practiced in rural life in Malaysia. The first part of the paper defines the concept and principles of rural sustainability. The second part highlights the findings of a case study on rural sustainability practice of a rural community in Malaysia. These include the practice of recycling and reuse of materials, utilization of electricity, water and chemical substances, mode of transport, diversification of economic activities and social cohesion. The study indicates that the level of awareness and the practice of sustainability principles are still low among rural people. Few measures are suggested to promote greater awareness and the practice of rural sustainability in rural areas.


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