Wastewater systems

From urban to alpine. We plan and build sustainable, site-adapted sanitation systems for your Tiny House, your mountain lodge or new urban neighbourhoods.

Vuna presents you with a complete and up-to-date overview of possible systems and technologies for your sanitation needs. We plan and build customized systems and offer the appropriate (waste-) water treatment.

A sophisticated, customized combination of these steps leads to solutions that close water and nutrient cycles. We plan decentralized wastewater systems for remote homes and implement self-sufficient rural sanitation systems.

Are you looking for a decentralized wastewater treatment system?

We recommend separating urine, feces, and greywater and treating them separately. We use the following technologies, among others, to separate wastewater streams:



Dry and/or separation toilets 

⠀
The dry toilet does not require water and is therefore a decentralized and water-saving solution.
There are different types of dry toilets. With dry separating toilets, urine and feces can be treated separately, and the nutrients reused. Feces and toilet paper are gradually broken down in the composting chamber with the help of composting worms until the volume is reduced by approximately 90%.
⠀
→ FAQ Dry Toilets
→ Portfolio of dry toilets
⠀
⠀
⠀
⠀



Worm, substrate and plant filters

⠀
A substrate filter consists of a vertically flowing plastic tank filled with substrate. The substrate surface retains solids, while the water percolates through a drainage system. Biological purification takes place within the substrate through microorganisms. In a constructed wetland, the plants keep the substrate oxygenated and loose. Alternatively, in a verm filter, composting worms are introduced into the substrate to aid in the breakdown of organic solids.
⠀
→ Explanatory video water purification garden
→ Phytotiny order form
→ Wastewater Treatment Plant Brochure
→ Portfolio: Decentralized



Greywater recycling 

⠀
By treating and reusing greywater on-site, we consume less freshwater and reduce our environmental impact. Its low level of pollution makes it particularly well-suited for this purpose.
⠀
→ FAQ Water Recycling
→ Portfolio: Decentralized

⠀
⠀
⠀
⠀
⠀
⠀
⠀
⠀
⠀
⠀
⠀
⠀



SBR (Sequencing Batch Reactors) 

⠀
SBR wastewater treatment takes place in four cycles: filling, aerated cleaning, sludge settling, and discharge of the clarified water. Nitrogen and phosphorus are biologically removed through the alternation of anaerobic and aerobic phases.
⠀
→ Portfolio

⠀
⠀
⠀
⠀
⠀



Urine recycling technology

⠀
Urine is a valuable resource that, when collected separately, can be used as fertilizer. There are various ways to concentrate or stabilize the fertilizer. Among other things, we also use our Vuna process to stabilize liquid manure, which reduces ammonia emissions.
⠀
→ Urine recycling technology
→ Aurin brochure
→ Vuna Nexus
→ Portfolio: Nutrient Recycling



Trickling filter 

⠀
A trickling filter is a biological wastewater treatment system in which pre-treated water trickles over an aerated filter medium. Microorganisms that colonize the filter material break down the dissolved organic substances.
⠀
→ Portfolio: Decentralized

⠀
⠀
⠀
⠀

A sophisticated, customized combination of these steps leads to solutions that close water and nutrient cycles.