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In recent years, safety innovation has brought potential benefits to the sustainable development of building industries. However, safety innovation is still limited owing to a limited understanding of technology capabilities and associated barriers within construction organizations. This study aimed to evaluate the potential technologies and barriers based on company type and size toward construction safety innovation. The literature review identified twelve technologies and ten barriers to safety innovation. These technologies are classified into geospatial, image, and interactive technologies, whereas barriers are classified into technology, organization, and market-related problems. The rank-based non-parametric tests analyzed data collected from 184 industry practitioners in Vietnam to examine differences between groups of developers, consultants, and contractors with small, medium, and large construction organizations. The findings showed that developers and consultants are pioneers toward innovation in safety management practices compared to contractors. Additionally, image technologies are the top solutions for improving safety performance for SMEs, whereas organization-related problems are major challenges for their innovation. A comparison between countries reveals the growing trend of utilizing interactive technologies to enhance construction safety management. The results provide valuable insights into the context of global construction safety innovation. These findings are expected to provide innovative guidelines for the sustainable development of the building industry. [ABSTRACT FROM AUTHOR]

The performance of sponge membrane bioreactor (SMBR) is strongly dependent on operating conditions. Dissolved oxygen (DO) concentration is one of the key operating parameters in the SMBR process determining the mixing efficiency, floc generation, anoxic zone formation, and directly relating to pollutant removal efficiency and membrane behavior. This study aims to examine the effect of various DO concentrations on SMBR treating hospital wastewater. The objectives were to investigate the influence of three DO concentrations on (i) sludge characteristic, (ii) COD removal efficiency, (iii) nitrogen removal efficiency and (iv) membrane fouling in the lab scale SMBR. Consequently, the operation with DO1 (7.15 ± 0.40 mg/L) achieved the highest MLSS concentration; however, it could consume excessive energy for aeration. The COD removal efficiencies were similar in three DO levels, ranging from 95% to 99%. The operation with DO3 (1.58 ± 0.42 mg/L) resulted in the highest TN removal efficiency of 76% and TN denitrification percentage of 31%. Herein, sponges conditioned the denitrification process. The TN removal efficiency in SMBR was two times higher than the membrane bioreactor process. In addition, fouling was significantly improved at higher dissolved oxygen during operation period without any membrane cleaning. [ABSTRACT FROM AUTHOR]