Key questions

  • What improvements are required to overcome the water crisis?
  • Freshwater: limited resource?
  • How well is the humanity familiar with current water pollution situation
    in the world?
  • What are the benefits associated with a new water treatment approach?


  • Guarantee the right to water;
  • Decentralize the responsibility for water;
  • Develop know-how at the local level;
  • Increase and improve financing;
  • Evaluate and monitor water resources.

Project objectives

  • Extensive research on novel water purification approach;
  • Design a pilot plant of the purification system;
  • Development of the pilot plant;
  • Test the plant with couple of biggest end users in the region;
  • Design and development of mobile plant.

OneDrop - How it works

The project concentrates on conducting research, construction principles and design of comprehensive electrolysis unit that produces sodium ferrate from the steel anode and sodium hydroxide solution. Ferrate permits to carry on water treatment at the municipal water supplies or enterprise territory and the treatment of industrial wastewaters or drinking water.

The unit ensures that treated wastewaters discharged into the environment without any harm. Integrated electrolysis unit for the production of reagents for drinking water purification and wastewaters treatment does not have any domestic analogues and can ensure the competitiveness of the domestic water treatment processing systems compared to foreign-made analogues by price, productiveness and energy efficiency.

Sodium Ferrate Production Experiment

Sodium Ferrate Production Experiment Follow the photos and videos below for a better understanding of how sodium ferrate is produced in the lab. The experiment is performed by the research group of St. Petersburg State University.…

Summer school under the auspices of UNESCO “Ecological safety of megapolis”

On 12-16 July Daria Navolotskaya from Saint Petersburg State University gave a lecture as an invited speaker at the summer school “Environmental Challenges of Megacities” in Mining University, Saint Petersburg. The school was held under the auspices of UNESCO for 17 students from various Russian universities. The…

Saint Petersburg State University participation in conferences

Navolotskaya Daria participated in the Online-Conference “Sustainable Utilization of Water, Air, Soil, and Farm Resources” taking place in Saint Petersburg Mining University on 14th of April 2021 with the topic “OneDrop Project – A Novel Mobile Water Purification Plant”. Video from the conference could be found by…