without the need for an interview, here are some of the things we have done in the past and continue to do.
when in rural we designed our own eco' home, and had our composting toilet it was a dry box system, called nauture-loo. we only allowed for insidental urine to go into it all other urine was bucketed and mixed with various secondhand waters and fed to the garden daily.
all our second ahnd water has always gone to gardens or potted plants. even now in suburbia, the thing we don't ahve and miss is the compoting toilet. all is done by hand that way we can manage it better and put it right where we want it, and the nature-loo, is an affordable simple versatile system that needs no maintenance.
all kitchen scraps get tucked under the mulch as does the spent vege' plants, all scrappy bits of paper etc.,. end up under the much in the food tree garden. we use no fertilisers or manures.
I was introduced by my professor to a constructed wetland used to decontaminate a swine factory of over 100 large farm pigs here at A&T University using native plants and series of small ponds. The system is incredibly small for the amount of waist it receives and uses 1/50th of the amount of land that is used today to eliminate waist. Phosphorus reduction is still a problem but the toxicity is greatly reduced. You can thank me later but this is state of the art and I have been in this facility twice and I can say it is inspiring. NC is the pork producing capital of the world, lol!
Got to this site.....
search for the following ppt...
Nitrogen Cycling in Constructed Wetlands as Related to Swine
Research paper results below...
I don't think biofuels from the pig waist are practical purposes from constructed wetlands and the systems including Sweden are more novelty then practical. You may be comparing apples to oranges in this one. My professor is a bio engineer and the constructed wetland is not a process for mother nature to produce biofuels, lol!
The design of this system is more geared towards moderate to small scale pig farms who don't have the budget for the grossly expensive systems that you have described in Sweden.
The only thing that I see in this that you dislike is that it was an American study.
The fact is that these systems are not widely adopted because they are not profitable or practical yet. The systems you are talking about are pilot programs testing potential systems. We are still years and years away from an efficient waist processing system.
the humanure system is as simple as one can get, and by all accounts a good system, yet to use it myself but plan to sometime. only thing is the bucket system is unlikely to ever be approved as a suitable toilet system for homes built in most if not all of australia i would suggest.