Coal gasification wastewater has complex pollutant components and high COD value, contains a variety of toxic harmful substances. The treatment coal always been one the important problems in development industry China. In this paper, aiming at removal fine particle pollution wastewater, sand filtration method was used to explore changes parameters such as solid content removal, separation accur...

Filter media composed of electrostatically charged nonwovens is the key device in an air purifier. Pleated filters are constructed from a cardboard frame with lattice faces containing filter reinforce by expanded support grid, which have more surface area for trapping contaminants and capture airborne effectively than non-pleated filters. The aim this work to investigate dominant factors on fil...

Point-of-use filters containing granular activated carbon (GAC) are an effective method for removing certain chemicals from water, but their ability to remove bacteria and viruses has been relatively untested. Collision efficiencies (alpha) were determined using clean-bed filtration theory for two bacteria (Raoutella terrigena 33257 and Escherichia coli 25922), a bacteriophage (MS2), and latex ...

It has been confirmed that SARS-CoV-2 can infect humans via airborne transmission from person to person. Accordingly, there are two concerns about the exhaled aerosol emitted coughs or sneezes of COVID-19 patients: (1) might healthcare providers in same confined patient rooms; (2) enter main ventilation system and transmit other room as a health threat. Therefore, portable ultraviolet (UV) air ...

It has been hypothesized that, when engulfing food mixed with inorganic particles during benthic feeding, cyprinid fish use protrusions of tissue from the palatal organ to retain the food particles while the inorganic particles are expelled from the opercular slits. In crossflow filtration, the particle suspension is pumped parallel to the filter surface as filtrate exits through the filter por...

A method patent pending has been developed to determine the quality of environmental cab filtration systems. This method utilizes specially configured filter cartridges to remove carbon dioxide from the ambient air with the environmental cab’s air filtration system. A real-time gas monitor is placed inside an unoccupied cab with the filtration system running to time decay the carbon dioxide to ...

A scenario is proposed to describe the capture of a spherical particle around a cylindrical pore. This geometry, "ideal" as far as the problem of particle capture on a filtration membrane is concerned, is clearly relevant in view of the pore-scale geometry of nucleopore or microsieve filtration membranes, and also of some microfluidic systems used to perform fluid-particle separation. The prese...