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Wastewater treatment plants (WWTPs) have long-time environmental impacts. The purpose of this paper is to assess the environmental footprint of two advanced wastewater treatment (WWT) technologies in a life cycle and sustainability perspective and identify the improvement alternatives.

In this study life cycle-based environmental assessment of two advanced WWT technologies (moving bed biofilm reactor (MBBR) and sequencing batch reactor (SBR)) has been carried out to compare different technological options. Life cycle impacts were computed using GaBi software employing the CML 2 (2010) methodology. Primary data were collected and analysed through surveys and on-site visits to WWTPs. The present study attempts to achieve significantly transparent results using life cycle assessment (LCA) in limited availability of data.

The results of both direct measurements in the studied wastewater systems and the LCA support the fact that advanced treatment has the best environmental performance. The results show that the operation phase contributes to nearly 99 per cent for the impacts of the plant. The study identified emissions associated with electricity production required to operate the WWTPs, chemical usage, emissions to water from treated effluent and heavy metal emissions from waste sludge applied to land are the major contributors for overall environmental impacts. SBR is found to be the best option for WWT as compared to MBBR in the urban context. In order to improve the overall environmental performance, the wastewater recovery, that is, reusable water should be improved. Further, sludge utilisation for energy recovery should be considered. The results of the study show that the avoided impacts of energy recovery can be even greater than direct impacts of greenhouse gas emissions from the wastewater system. Therefore, measures which combine reusing wastewater with energy generation should be preferred. The study highlights the major shortcoming, i.e., the lack of national life cycle inventories and databases in India limiting the wide application of LCA in the context of environmental decision making.

The results of this study express only the environmental impacts of the operation phase of WWT system and sludge management options. Therefore, it is recommended that further LCAs studies should be carried out to investigate construction and demolition phase and also there is need to reconsider the toxicological- and pathogen-related impact categories. The results obtained through this type of LCA studies can be used in the decision-making framework for selection of appropriate WWT technology by considering LCA results as one of the attributes.

The results of LCA modelling show that though the environmental impacts associated with advanced technologies are high, these technologies produce the good reusable quality of effluent. In areas where water is scarce, governments should promote reusing wastewater by providing additional treatment under safe conditions as much as possible with advanced WWT. The LCA model for WWT and management planning can be used for the environmental assessment of WWT technologies.

The current work provides a site-specific data on sustainable WWT and management. The study contributes to the development of the regional reference input data for LCA (inventory development) in the domain of wastewater management.

Compiled by K.G.B. Bakewell covering the following journals published by MCB University Press: Facilities Volumes 8‐18; Journal of Property Investment & Finance Volumes 8‐18; Property Management Volumes 8‐18; Structural Survey Volumes 8‐18.

Index by subjects, compiled by K.G.B. Bakewell covering the following journals: Facilities Volumes 8‐18; Journal of Property Investment & Finance Volumes 8‐18; Property Management Volumes 8‐18; Structural Survey Volumes 8‐18.

The purpose of this paper is to examine the several methodologies and activities taken to assess the environmental impacts of a $33 million pilot project undertaken through a loan from the Asian Development Bank (ADB) jointly with significant Chinese government investments. The ADB biogas utilization project has supported construction of over 7,500 biogas digesters in more than 140 rural villages. An additional 10,000 biogas digesters are programmed as well as significant investment in biogas production through large‐scale animal agribusinesses. The latter will be supported through investments utilizing the Clean Development Mechanism (CDM).

The paper provides a longitudinal perspective by: looking at the project's Initial Environmental Examination (IEE) undertaken at appraisal; assessing the ongoing energy and environmental monitoring plan currently under way; and examining the potential for the use of Strategic Environmental Assessment (SEA) as a tool for integrating environmental policy considerations on a regional or provincial level in China.

Improved technologies for application of renewable energy – in particular successful application and adoption of biogas digesters at the village level – offer the potential to promote sustainable, cost‐effective growth in agriculture with concurrent positive environmental impacts.

Based on the relative success of ongoing efforts to promote the adoption of biomass technologies, a significant expansion of the bioenergy program is under consideration by the Ministry of Agriculture.

The case study suggests that there is potential for use of SEA as a tool for the establishment of regional or provincial environmental priorities by taking account of information on the economic, social and environmental benefits, costs and risks of adopting a national strategy for biomass utilization. SEA is a recent innovation in China and must be adapted to local conditions.

Compiled by K.G.B. Bakewell covering the following journals published by MCB University Press: Facilities Volumes 8‐18; Journal of Property Investment & Finance Volumes 8‐18; Property Management Volumes 8‐18; Structural Survey Volumes 8‐18.

Compiled by K.G.B. Bakewell covering the following journals published by MCB University Press: Facilities Volumes 8‐18; Journal of Property Investment & Finance Volumes 8‐18; Property Management Volumes 8‐18; Structural Survey Volumes 8‐18.

The purpose of this paper is to review the Rwandan Environmental Impact Assessment (EIA) practice and identify the possible constraints faced by EIA practitioners in Rwanda. The results presented here will help to highlight strengths and weakness of the Rwandan EIA practice.

The EIA practice was evaluated by a self-administered questionnaire survey for respondents including approved EIA experts in Rwanda, government agencies involved in EIA process and corporate which have received environmental clearance. The aspects of practices and challenges were evaluated and include the suitability of institutional arrangements, the scientific methodological bases of EIA, the conduct of EIA, the effectiveness of EIA with respect to influence decision making, overall results and EIA as a learning process. These aspects were rated on different scales by the respondents to identify where the Rwandan EIA practice stands now in terms of strengths, weaknesses, opportunities and constraints.

The institutional arrangements of EIA were judged to be good overall by the respondents with main strengths being seen in the policy and legal base, and the scope of application. Only the marginal weaknesses are seen in the monitoring. The scientific and empirical basis for assessment was judged to stand moderately strengthened during the last five years. The performance of key activities is more than satisfactory. A majority of Rwandan EIA stages are good and excellent to some extent.

This paper identifies some of the constraints and challenges faced by the Rwandan EIA practitioners. It will contribute to an understanding of EIA practice and robust practices across the globe.

A robust method in environmental load assessment of buildings is urgently required to reduce the environmental burden of the construction industry. While the industry utilizes the life cycle assessment (LCA) method to assess environmental impacts of detailed designs, the implementation of changes at that late stage of development is often expensive and undesirable. On the other hand, during the early design stages, the LCA method is severely limited by the lack of information available, e.g., uncertainty about final materials to be used. This research study investigates how building information modeling (BIM) can facilitate LCA analysis at an early design stage.

A literature review is conducted to establish a framework for BIM and LCA integration, which creates the foundation for the development of a new BIM-based LCA tool. The tool is empirically evaluated on a large case study of a residential building in Denmark.

Case study results show that the new tool facilitates decision-making in an integrated design process, providing reliable LCA results on an early stage model, while avoiding intermediate manual input by the end user in contrast to other commercial LCA tools.

A first prototype of a BIM-based tool is demonstrated, which allows professionals, small architectural companies, students and researchers to calculate the environmental loads of the building in the early design stage in an automated, transparent and time-saving manner.

This study aims to illustrate the impact-assessment procedure of low-carbon tourism (LCT) program implemented in a world heritage city and to develop specific indicators toward sustainability.

The impact-assessment framework was indicator-based and designed for creating sustainable tourism (ST) in a case study. A set of indicators in various dimensions was developed and applied, referring to the UNWTO guideline. A mixed method of primary and secondary data collected from different sources included document review, site observation, key informant interview, questionnaire survey and focus-group discussions. Assessment of actual/observed impacts was proceeded based on the data collected from tourists and stakeholders, especially on tourist behaviors and resource consumptions.

The implementation of LCT program in a world heritage city provided impacts in different dimensions and characters. The observed activities were majorly tourism activities in accommodations and recreational places. The indicator initiation is the first development toward sustainability in a case of tourism study in a city destination. Indicators were developed with participation from key stakeholders and covered sustainability and carbon-emission dimensions. Impact-assessment results show a positive theme in less carbon emission, enhanced local income distribution and community capacity. However, the negative impacts include increased amounts of resource consumption and waste generation in visiting sites. The impact matrix works as the map for decision-makers to maximize benefits and manage the cons of the LCT program toward ST principles.

Research methodology, procedure and results on impact assessment with holistic perspectives imply academic contribution and practical benefits for decision-makers regarding ST development. The number of samples and enterprises was limited because of the program implementation period.

The research illustrates the impact-assessment process for an implemented city-based LCT program toward ST, where stakeholder participation was also functioning. A list of indicators was specially designed and can be practically applied for other LCT programs in city destinations. Applying a sustainability impact-assessment framework to the program can provide a clear presentation on how to develop ST.