Provided is a reciprocating submerged membrane filtration apparatus including: a membrane tank comprising a submerged membrane and configured to intake influent wastewater to be treated, the influent wastewater being filtered through the submerged membrane to produce treated water; and a reciprocation apparatus configured to move the membrane to create an inertia force which shakes foulants off from the submerged membrane under oxygen-deficient conditions, wherein the submerged membrane comprises a microfiltration (MF) membrane or an ultrafiltration (UF) membrane.

The present invention relates to methods of purifying nanostructures. The nanostructures may be silver nanowires.

A portable fluid filtration system. The portable filtration system includes a trailer having a ceiling with a predetermined height, and having an openable and closeable ceiling passage. One or more filter assembles are disposed in the trailer. Each filter assembly includes a filter base and a filter cartridge connectible and dis-connectible to the filter base. The filter cartridge has a height such that when it is disposed on the filter base, the filter cartridge extends beyond the predetermined height of the trailer ceiling. The system also has a fluid input/output assembly disposed in the trailer and fluidically connected to the at least one filter assembly, the liquid input/output assembly being for receiving fluid to be cleaned and inputting it to the at least one filter assembly and for receiving filtered fluid from the filter assembly and for outputting it. The system further has a rotatable, extendable filter cartridge mover disposed in the trailer, for connecting and disconnecting the filter cartridge to the filter base.

This invention relates generally to a filtration process and apparatus for separating valuable or harmful process liquids from mixtures or slurries that contain such liquids and solid particles. In particular, the invention relates to a filtration process for separating Process Liquid from a feed slurry that comprises a mixture of the Process Liquid and solid particles, the process employing a Sweep Liquid that is less dense than the Process Liquid.

There is provided a method of concentrating functional biological components within a liquid suspension, the method comprising: providing a system comprising an ultrafiltration/concentration unit (UCU), the UCU comprising a first chamber for receiving therein the liquid suspension. a second chamber for receiving therein the filtrate, and a filter disposed in a fluid path therebetween. the filter comprising pores sizes so as to prevent passage therethrough of the biological components: introducing the liquid suspension into the first chamber: maintaining a pressure in the first chamber being no greater than approximately 2 bar; maintaining a pressure in the second chamber being lower than that of the first chamber: and harvesting the concentrated biological components: wherein a retentate is obtained in which the concentration of the biological components therewithin is increased. relative to the liquid suspension. by a factor of at least fifty. and wherein a majority of the biological components in the retentate are functional.

Proposed is an electronic device for controlling a hollow fiber membrane fouling reduction system including an exciter controller that generates an excitation signal, an exciter module that generates vibration corresponding to the excitation signal by being connected electrically to the exciter controller, and a hollow fiber membrane module that receives the vibration generated from the exciter module, the electronic device including a vibration analysis module that receives first and second vibration values for frequencies sensed respectively from the exciter module and the hollow fiber membrane module, calculates a vibration value transmission rate for each frequency based on the first and second vibration values, and calculates an optimal frequency at which the vibration value transmission rate is highest, and an optimal sound source selection module that receives feedback of the optimal frequency and selects an optimal sound source used to generate the excitation signal, based on the optimal frequency.

A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath, and a control part controlling a reciprocating distance or frequency of the separation membrane module.

A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a separation membrane; a separation membrane module mounted on the membrane support frame; a vane member disposed at a lower end of the membrane support frame and provided to lift sludge accumulated at a lower part of the treatment tank; and a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame, in which the separation membrane module includes an upper frame and a lower frame and a hollow fiber membrane installed between the upper frame and the lower frame.

A membrane filtration system and a membrane bio reactor including the same are described. In an example, the membrane filtration system includes: a treatment tank; a membrane support frame disposed in the treatment tank and mounted with a filtration membrane; a reciprocating portion connected to the membrane support frame and reciprocating the membrane support frame; a sliding portion disposed in the treatment tank, connected to the reciprocating portion, and guiding a moving direction of the membrane support frame; and a sludge lifting portion flexibly disposed at a lower end of the membrane support frame to lift sludge accumulated at a lower part of the treatment tank.

A membrane filtration system, capable of effectively removing foreign matter attached to a separation membrane while saving energy by reciprocating the separation membrane, includes a treatment bath, a membrane support frame disposed in the treatment bath, a separation membrane module installed in the membrane support frame, a reciprocating part connected with the membrane support frame to reciprocate the membrane support frame, and a sludge floating part disposed on a lower end of the membrane support frame to float sludge accumulated in the treatment bath. The separation membrane module includes an upper frame, a lower frame, and a hollow fiber membrane provided between the upper frame and the lower frame.