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...Membrane filtration h response phase application level management objectives key features acute household point of use treatment mechanical pathogen removal stabilisation neighbourhood shared recovery city public local availability technical complexity maturity low medium lid filter with hand pump contaminated filtered water container or glass filters generally ultrafiltration pumping as autonomous systems for single multiple uf microfiltration mf membranes flat sheet households hollow fibre modules is by gravity manu can be fouled when a layer retained material al particles colloids protozoa bacteria and vi forms on the surface time reducing flow rate de ruses are pending design this fouling removed performance depends pore size backwashing small amount clean in its manufacturing quality reverse direction cleaning addition chemicals shaking flushing intensified refers to nanofil high content natural organic matter raw wa tration osmosis based ter turbidity depending type con t usually...