Abstract Gas-solid two phase flow widely lies in industry process, while its parameters measurement (flow velocity, the mass flowrate, particle sizes, et al.) is very difficult. This paper mainly studies solid velocity questions of gas-solid with ring electrostatic sensor. During study, a new mathematical model sensor established, and by simulating obtained spatial filter characteristics are ob...

The biosand filter (BSF) is an intermittently operated, household-scale slow sand filter for which little data are available on the effect of sand composition on treatment performance. Therefore, bench-scale columns were prepared according to the then-current (2006-2007) guidance on BSF design and run in parallel to conduct two microbial challenge experiments of eight-week duration. Triplicate ...

Abstract Water treatment of river water is generally carried out conventionally, a rapid sand filter consisting coagulation unit, flocculation, sedimentation, and filtration. One the disadvantages filters that it requires large volume for washing, inconsistent quality, escape microorganisms less than 0.01 mm in size. Membrane technology can solve this problem with advantages including more comp...

The filtration behaviour of woven and nonwoven fabrics at different air flow rate, dust feed rate, dust loading, time intervals and dust particles has been studied. It is observed that the pressure drop increases with the increase in airflow rate for both the woven and nonwoven filters. In general, the pressure drop in case of woven filter is found to be higher than that in case of nonwoven fil...

Sand, an abundant resource from the nature, is a promising candidate for oil/water separation. Herein, raw sand was designed with switchable surface wettability to enable recyclability and versatility in practical The “smart” fabricated by grafting pH-responsive poly(4-vinylpyridine) (P4VP) oleophilic/hydrophobic octadecyltrimethoxysilane (OTS) onto its surface. decorated can be used as oil sor...