In order to solve the problems including pipe corrosion, scaling and microbial growth, which severely threat safe op-eration of circulating cooling water system, this paper proposes ion exchange softening and alkaliza...In order to solve the problems including pipe corrosion, scaling and microbial growth, which severely threat safe op-eration of circulating cooling water system, this paper proposes ion exchange softening and alkalization process to solve these problems and carries out a series of studies to study the feasibility of ion exchange softening and alkaliza-tion process in the simulation process of circulating cooling water system. The studies include product water quality of ion exchange softening and alkalization process, effect on the performance of carbon steel and brass, and the inhibition that suppresses microbial growth. The results indicate that ion exchange softening and alkalization process is feasible to prevent the circulating cooling water system from scaling, pipe corrosion, and microbial growth without any other chemicals. Thus circulating cooling water system can achieve zerodischarge of wastewater.展开更多
As an emerging thermal-driven membrane technology,membrane distillation(MD)has attracted immense attention for desalination and water purification.The membranes for MD generally have hydrophobic or superhydrophobic pr...As an emerging thermal-driven membrane technology,membrane distillation(MD)has attracted immense attention for desalination and water purification.The membranes for MD generally have hydrophobic or superhydrophobic properties to enable vapor permeation without liquid passage(e.g.,wetting).However,conventional MD membranes cannot undergo long term stable operations due to gradual wetting in practical applications where the feed solution often contains multiple low-surface tension contaminants(e.g.,oil).Recently,omniphobic membranes repelling all sorts of liquids and typically having ultralow surface energy and re-entrant structures have been developed for robust MD to mitigate wetting and fouling.In this paper,we aim to provide a comprehensive review of recent progress on omniphobic membranes.Fundamentals,desirable properties,advantages and applications of omniphobic membranes are discussed.We also summarize the research efforts and methods to engineer omniphobic membranes.Finally,the challenges and future research directions on omniphobic membranes are discussed.展开更多
文摘In order to solve the problems including pipe corrosion, scaling and microbial growth, which severely threat safe op-eration of circulating cooling water system, this paper proposes ion exchange softening and alkalization process to solve these problems and carries out a series of studies to study the feasibility of ion exchange softening and alkaliza-tion process in the simulation process of circulating cooling water system. The studies include product water quality of ion exchange softening and alkalization process, effect on the performance of carbon steel and brass, and the inhibition that suppresses microbial growth. The results indicate that ion exchange softening and alkalization process is feasible to prevent the circulating cooling water system from scaling, pipe corrosion, and microbial growth without any other chemicals. Thus circulating cooling water system can achieve zerodischarge of wastewater.
文摘As an emerging thermal-driven membrane technology,membrane distillation(MD)has attracted immense attention for desalination and water purification.The membranes for MD generally have hydrophobic or superhydrophobic properties to enable vapor permeation without liquid passage(e.g.,wetting).However,conventional MD membranes cannot undergo long term stable operations due to gradual wetting in practical applications where the feed solution often contains multiple low-surface tension contaminants(e.g.,oil).Recently,omniphobic membranes repelling all sorts of liquids and typically having ultralow surface energy and re-entrant structures have been developed for robust MD to mitigate wetting and fouling.In this paper,we aim to provide a comprehensive review of recent progress on omniphobic membranes.Fundamentals,desirable properties,advantages and applications of omniphobic membranes are discussed.We also summarize the research efforts and methods to engineer omniphobic membranes.Finally,the challenges and future research directions on omniphobic membranes are discussed.
