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The biomass harvesting from the water surface and clearing of soil sludge should be done continuously with the help of a small suction dredger. The subsequent composting steps/earthing should be mechanised as far as possible, as in composting plants.
 
What is your professional opinion?

Dear fellow colleagues

Many international universities teach only and very straight the
elimination of nutrients as “standard - state of the art” in order
to treat waste water with adjoined disposal of effluent.

For urban and semi urban areas, how about a much simple/slightly
different sewage treatment pond plant approach, compared to “state
of the art” in Europe/North America?

At least under the favourable climatic condition here in the tropics,
instead of just dispose/eliminate nutrients, using instead a modular
ponds plant to make intensive use of most of the wastewater
nutrients, to actively produce organic material in a larger scale
with harvesting regular produced biomass material and
associated/adjoined composting/soil improvement for use on tropical
soils. This soils have usually a very low humus layer or just have
stony areas that no longer have any soil cover layer.

This could be just a "half" sewage treatment pond plant in the
main to reduce germs. I could imagine some kind of
wastewater-aquaculture with nano-aeration technics and OLOID's for
good steering/circulation on ponds and further use of the then still
nutrient-rich water for fast growing water plants and irrigating of
fast-growing trees with adjoined indirect groundwater recharge.

Any productive examples like this out there?