Knut Wichmann

TL;DR: The combination of aerobic biological process with physical filtration and disinfection is considered to be the most economical and feasible solution for grey water recycling and the MBR appears to be a very attractive solution in collective urban residential buildings.

TL;DR: This paper evaluated the performance and suitability of a resources and nutrients oriented decentralized greywater treatment system which uses a submerged spiral wound module and revealed that the UF membrane filtration system was able to maintain a permeate flux between 6 and 10 L/m2/h.

TL;DR: A non-potable urban grey water treatment and reuse scheme is proposed and the treatment alternatives for grey water reuse are evaluated according to the grey water characteristics, the proposed standards and economical feasibility.

TL;DR: The study shows that direct reverse osmosis membrane filtration with thin open channel spiral wound modules is able to achieve satisfactory results in terms of water quality, process stability and membrane flux.

TL;DR: Tests have been carried out to evaluate the possibility to adopt a simple extrusion procedure for flowability measurements, and a Vicat needle for solidity ones, and the development of analytical procedures to define the boundary limit between liquid and Paste-like behaviours (flowability) and that between solid and paste-like ones (solidity) is of growing interest.