After working for more than 20 years as an electrical engineer with different business houses, Suprio realized that life could be more meaningful and interesting than this scramble up the corporate ladder. He gave up his job …
His latest project Zimba the automatic chlorine doser, was selected by researchers of Stanford University and icddr-b for trials in the slums of Dhaka. These dosers are in operation since February 2012 and are currently serving around 50 families. A single device is also under pilot trial with Spring Health (a Paul Polak initiative) in Orissa…. more…
Related posts / information
- Zimba Water site
- Four low-cost devices that chlorinate water at the source - Engineering for Change
- ZimbaPlus | MIT IDEAS Global Challenge
- Zimba Water (ZimbaWater) on Twitter
- Another Video on subject by Suprio Das – on Vimo
- After Lighting Rural Houses from Rickshaws, Invention by Suprio Das Reaches MIT $100K Semifinals - NextBigWhat
Location:Hamburg University of Technology. The campus is located in Hamburg-Harburg.
Dates: Wednesday, 28 - Saturday 31 August 2013
…An analysis of a former civilisation in the Amazon, nowadays Brazil, reveals concepts which enable a highly efficient handling of organic wastes. Terra Preta do Indio is the anthropogenic black soil that was produced by ancient cultures through the conversion of biowaste and faecal matter into long-term fertile soils. These soils have maintained high amounts of organic carbon even several thousand years after they were abandoned. It was recently discovered that around 10% of the originally infertile soils in the Amazon region was converted this way from around 7,000 until 500 years ago. Due to the accumulation of charred biomass and other organic residues, terra preta subsequently formed giving it a deep, distinctly dark and highly fertile soil layer.One of the surprising facts is that this soil is highly productive without adding fertiliser.
Recent research concludes that this culture had a superior sanitation and bio-waste system that was based on source separation of faecal matter, urine and clever additives particularly charcoal dust and treatment steps for the solids resulting in high yielding gardening. Additives included ground charcoal dust while the treatment and smell prevention started with anaerobic lactic-acid fermentation followed by vermicomposting.The generation of new Terra Preta (‘terra preta nova’) based on the safe treatment of human waste could be the basis for sustainable agriculture in the twenty-first century to produce food for billions of people….
Speakers / Sessions
Conference Keynote Dr. Haiko Pieplow (tbc)
Session 1: TP soils, soil fertility, organic farming
Key note from Bruno Glaser or Albrecht von Sydow (Germany) (tbc)
- T. Theuretzbacher (Austria): Investigation on Terra Preta like products on the german-Austrian market
- N. Andreev (Moldava): The effect of terra preta like substrate on germination and shoot growth of radish and parsley
- H. Factura (Philippines): Addressing Poor Sanitation and Generating Added Values through Terra Preta Sanitation
- B. Pelivanoski (Germany): Terra Pellet – an organic fertilizer inspired by terra preta
Session 2: TPS Applications, Quality of products, hygienic parameter, legislation, certification
Keynote presentation Prof. Srikanth Mutnuri (India) (tbc): Terra Preta as an Alternative for the Management of Sludge from Waste Water Treatment Plant
- S. Böttger (Germany): Terra Preta – production from sewage sludges of decentralised wastewater systems
- M. Stöckl (Germany): Vermicomposting of fecal matter and organic waste – a quality assessment of products
- D. Meier Kohlstock (Germany): The integration of Terra Preta Sanitation in European nutrient cycles – Options for alternative policies and economies
Session 3: Terra Preta Sanitation: toilet systems and designs / Logistic and operation / practical examples
Keynote speech Prof. Charlotte de Fraiture (Netherlands) (tbc)
- R. Wagner (Germany): New challenges of resource management in the Botanic Garden Berlin by producing and applying biochar substrates
- R. Kuipers (Netherlands): A socio-economic assessment of urine separation, with a reflection on the possibilities for Terra Preta Sanitation, for the recycling of nutrients to rural agriculture in the Philippines
- M. Bulbo (Ethiopia): TP application in Ethiopia
- R. Wolf (Germany): Application of Fermented Urine for build up of Terra Preta Humus in a Permaculture Park and Social Impact on the Community Involved
Session 4: Carbon composting of biowaste and excreta/Climate farming / wood gas technology for energy and char coal production / Pyrolysis vs. hydrothermal carbonization
Keynote presentation Prof. Zifu Li (China) (tbc): Energy balance analysis on the pyrolysis process of animal manure
T. Voss (Germany): Wood gasification in parallel flow fixbed gasifieres for combined energy and charcoal production – experiences from six years of operation (abstact follows)
- C. vom Eyser (Germany): Product quality of ç from sewage sludge in terms of micropollutants
- E. Someus (Sweden): Reducing mineral fertilisers and chemicals use in agriculture by recycling treated organic waste as compost and bio-char products
- J. Fingas (Germany): Climate farming – Practical experience from sub-Saharan Afrika
Session 5: Microbiology, sanitization and lactic acid fermentation
Keynote presentation Dr. Gina Itchon (Philippines): The Effectivity of the Terra Preta Sanitation (TPS) Process in the Elimination of Parasite Eggs in Fecal Matter: A Field Trial of TPS in Mindanao, Philippines
- A. Yemaneh (Germany/Ethiopia): Investigation of Low-Cost Sugar Supplement for Lactic Acid Fermentation of Human Excreta in Terra Preta Sanitation System
- A. Febriana (Indonesia): Faeces Treatment By Lactofermentation Process Based On Terra Preta Sanitation System Concept
- A. Walter (Austria): Microbial communities in charcoal and microbe amended composts
- F. Scheinemann (Germany): Sanitation and conservation of nutrients in cattle manure and sewage sludge by anerobic fermentation
Institute of Wastewater Management and Water Protection at TUHH
GFEU e. V.
Institute of Environmental Technology and Energy Economics at TUHH
German WASH Network
all details are from their site
PUYALLUP, Wash. – Phosphorus recycled from human and animal waste for plant fertilizer could ease demand for the dwindling, increasingly expensive rock-mined element.
Scientists at Washington State University have found plants flourish with struvite, a material in waste composed of magnesium, nitrogen and phosphorus. Teamed with Multiform Harvest, a Seattle phosphorus recovery company, the researchers are fine-tuning the application and amounts of fertilizer in hopes of marketing a product and benefiting the world’s food supply.
“You can’t continue mining a finite resource forever,” said Rita Hummel, a scientist at the WSU Puyallup Research and Extension Center. “But as long as we … can reclaim struvite…
See complete story…. titled
by Rachel Webber, College of Agricultural, Human and Natural Resource Sciences published Wednesday, Feb. 27, 2013
- The Future of Poop (motherboard.vice.com)
- Phosphorus demand triples as meat-eating and population rise – with VIDEO (environmentalresearchweb.org)
This is a Wonderful 39 page Technical document on covering all aspect of Waterless Urinals and some variants that incorporates
the core ideas.
- Dr V M Chariar
- S Ramesh Sakthivel
This Resource Book is a guide that seeks to assist individuals, builders, engineers, architects, and policy makers in promoting waterless urinals and the benefits of harvesting urine for reuse through waterless urinals and urine diverting toilets.
Chapters cover a wide set of Waterless Urinals details
- Waterless Urinals
- 1.1 Advantages of Waterless Urinals and Reuse of Urine
- 1.2 Demerits of Conventional Urinals
- Functioning of Waterless Urinals
- 2.1 Sealant Liquid Traps
- 2.2 Membrane Traps
- 2.3 Biological Blocks
- 2.4 Comparative Analysis of Popular Odour Traps
- 2.5 Other Types of odour Traps
- 2.6 Installation and Maintenance of Waterless Urinals
- Innovative Urinal Designs
- 3.1 Public Urinal Kiosk 21
- 3.2 Green Waterless Urinal
- 3.3 Self Constructed Urinals
- Urine Diverting Toilets
- Urine Harvesting for Agriculture
- 5.1 Safe Application of Urine 3
- 5.2 Methods of Urine Application
- Other Applications of Urine
- Challenges and the Way Forward
- References and Further Reading
- Comparative analysis of popular odour traps
- Average chemical composition of fresh urine
- Recommended dose of urine for various crops
- Waterless urinals for men
- Schematic diagram showing functioning of urinals
- Sealant liquid based odour trap
- Urinals with sealant liquid based odour traps
- Flat rubber tube by Keramag and silicon membranes by Addicom
- LDPE membrane by Shital Ceramics
- Biological blocks
- Formwork used for fabrication of public urinal kiosk
- Reinforced concrete public urinal kiosk
- Drawing of public urinal kiosk established at IIT Delhi
- Green urinal established at IIT Delhi
- Plant bed of green urinal with perforated pipe
- Drawing of public urinal kiosk established at IIT Delhi
- Self constructed urinal Eco‐lily
- Squatting type urine diverting dry toilet with two chambers
- Urine diverting no mix toilet 27 Sectional view of a urine diverting dry toilet
- Deep injection of urine using soil injector
- Deep injection of urine using perforated pet bottles
- Use of fertilisation tank for applying urine through drip irrigation
- Manually operated reactor for recovery of struvite
- Schematic drawing of ammonia stripping from urine
“An odourless trap Zerodor which does not require replaceable parts or consumables resulting in low maintenance costs has been developed at IIT Delhi. This model is in final test stage yet to be made commercially available.” more on Zerodor…
Waterless Urinals do not require water for flushing and can be promoted at homes, institutions and public places to save water, energy and to harvest urine as a resource. Reduction in infrastructure required for water supply and waste water treatment is also a spinoff arising from installing waterless urinals. The concept, founded on the principles of ecological sanitation helps in preventing environmental damage caused by conventional flush sanitation systems.
In recent years, Human Urine has been identified as a potential resource that can be beneficially used for agriculture and industrial purposes. Human urine contains significant portion of essential plant nutrients such as nitrogen, phosphate and potassium excreted by human beings. Urine and faeces can also be separated employing systems such as urine diverting toilets. In the light of diminishing world’s phosphate and oil reserves which determine availability as well as pricing of mineral fertilisers, harvesting urine for reuse in agriculture assumes significant importance. Akin to the movement for harvesting rain water, urine harvesting is a concept which could have huge implications for resource conservation.
- UNICEF Report Highlights India’s Water Management Woes (circleofblue.org)
- SANITATION: Urban water woes (irinnews.org)
- From Water Problems to Water Solutions (slideshare.net)
- Lack of toilets, clean water costs world $260 bln a year – Liberian president (trust.org)
When looking at sanitation/wastewater treatment and making it economically feasible for more parts of the world, this is very interesting research. Some will say it has roots in the fact that there is “gold” in out crap…
Related links to this research:
…On May 1, a panel of judges awarded the $100,000 National University Clean Energy Business Challenge prize to the Stanford team for its project to convert nitrogen waste into nitrous oxide that is then used for clean power generation….
A new process for the removal of nitrogen from wastewater is introduced. The process involves three steps: (1) partial nitrification of NH4+ to NO2−; (2) partial anoxic reduction of NO2− to N2O; and (3) N2O conversion to N2 with energy recovery by either catalytic decomposition to N2 and O2 or use of N2O to oxidize biogas CH4. Steps 1 and 3 have been previously established at full-scale. Accordingly, bench-scale experiments focused on step 2. Two strategies were evaluated and found to be effective: in the first, Fe(II) was used to abiotically reduce NO2− to N2O; in the second, COD stored as polyhydroxybutyrate (PHB) was used as the electron donor for partial heterotrophic reduction of NO2− to N2O. ….
Normally, we want to discourage these gases from forming,” said Craig Criddle, a professor of civil and environmental engineering and senior fellow at the Woods Institute for the Environment at Stanford. “But by encouraging the formation of nitrous oxide, we can remove harmful nitrogen from the water and simultaneously increase methane production for use as fuel.
- Total N2O emissions-which are believed to come primarily from nitrogen fertilizers used in agricultural production-would account for about 8 percent of California’s total greenhouse gas emissions. (familysurvivalprotocol.com)
- 1st International IWA Conference on Holistic Sludge Management (washlink.wordpress.com)
- Major Advance in Generating Electricity From Wastewater (wakingtimes.com)
- Major Advance in Generating Electricity From Wastewater (myscienceacademy.org)
- The Final Frontier of Water and Wastewater Treatment: Sludge Management Equipment Market Set to Reach $9.9 Billion by 2017 (prweb.com)
Redefining the model for urban sewage treatment / sanitation addressing
Waste recover- Key Chemicals
From the Youtube Site
“Kartik Chandran is an Environmental Engineer. He is currently Associate Professor of Earth and Environmental Engineering at Columbia University, where he leads the Columbia University Biomolecular Environmental Science program and the Wastewater Treatment and Climate Change program. Under his stewardship, the research directions of biological wastewater treatment and biological nitrogen removal were established for the first time ever in the history of Columbia University. Chandran is keenly interested in developing novel models for sustainable sanitation and wastewater treatment, with a specific focus on managing the global nitrogen cycle (one of the grand challenges of the National Academy of Engineering) and linking it to the carbon cycle, the water cycle and the energy cycle. Chandran has received, among other awards, the NSF CAREER award and the Paul Busch Award. He was the recipient of a 2007 National Academies of Science Fellowship and a guest professorship at the Delft University of Technology. In 2011, Chandran began implementing a novel model for sanitation in Africa, supported by the Bill & Melinda Gates Foundation. He also serves on the Board of Trustees of the Water Environment Federation.”
- Gresham’s wastewater treatment plant leading way in power production, alternative energies (oregonlive.com)
- India flush with wastewater treatment opportunities (eco-business.com)
- 300 swimming pools of partly treated sewage dumped into the Thames River (lfpress.com)
- Ivy League Brains Figure Out How to Make Biodegradable Plastic from Greenhouse Gases (cleantechnica.com)
- Sewage-powered hydrogen fueling station opens in CA (reviews.cnet.com)
A good read: The roots of inaction: Understanding and overcoming the obstacles to greater investment in scaling-up effective diarrhea treatment
The roots of inaction: Understanding and overcoming the obstacles to greater investment in scaling-up effective diarrhea treatment
Posted: August 20, 2012
August 7, 2012 — MCHIP
Please join CORE Group and MCHIP for the second in a series of webinars on diarrheal disease.
WHEN: August 21st from 9 – 11 am EST
HOW: Join by registering at CORE Group’s website 
WHO: Moderated by Dr. Dyness Kasungami, MCHIP Team Leader for Child Health
The second leading cause of preventable child deaths, diarrheal disease claims the lives of 1.3 million children under-five annually, mostly in Africa and South Asia. Gains from the introduction of oral rehydration therapy (ORT) and improved water, sanitation and hygiene are have not been sustained in many countries, with global coverage of ORT use being as low as 34%.
The first webinar in February focused on advocating for coordinated approaches to implement a package of effective interventions, and mobilizing resources and multi-disciplinary partners. In this second webinar, Dr. Dyness Kasungami will moderate a panel with three speakers who will present country success experiences from Benin, Ghana and India in addressing low coverage of effective interventions in diarrheal disease.
The panelists will also share lessons learned surrounding promising practices to increase coverage of zinc, changed dynamics around ORS/zinc use, and the links between treatment and key Water, Sanitation, and Hygiene (WASH) practices for prevention. The panel presentation will be followed by an opportunity for a Q&A with participants.
Katharine McHugh is the WASH Technical Advisor at PSI.
Topics: Diarrhea treatment program in Benin; strengthening linkages between ORT/zinc and WASH
Kate Schroder is the Director of Essential Medicines Initiative of Clinton Health Access Initiative (CHAI).
Topic: Demand generation for ORS and zinc in India
Vicki MacDonald is the Child Health Advisor of Abt Associates.
Topic: A public/private partnership in Ghana to address the introduction of zinc
1776 Massachusetts Avenue, NW Suite 300, Washington, DC 20036 | TEL: 202-835-3100 | FAX: 202-835-3150
- PATH And Partners Issue Diarrhea/Pneumonia Declaration To Call For Action Against Leading Causes Of Child Mortality (medicalnewstoday.com)
- Uganda: Clinton arrives to fight diarrhea in children (crofsblogs.typepad.com)
- New genetic path to deadly diarrheal disease discovered (news.bioscholar.com)
- Researchers look at the spread of dysentery from Europe to industrializing countries (medicalxpress.com)
- Child survival takes center stage as leaders convene to renew commitments (eurekalert.org)
From site: “After a crisis, how can we tell if water is safe to drink? Current tests are slow and complex, and the delay can be deadly, as in the cholera outbreak after Haiti’s earthquake in 2010. TED Fellow Sonaar Luthra previews his design for a simple tool that quickly tests water for safety — the Water Canary. “
There was post on the yahoo group ECOSANRES asking about Cold Climate toilets -Cold weather toilets.
A reply mentioned this PDF:
Urine Diverting Toilets in Climates with Cold Winters Technical considerations and the reuse of nutrients with a focus on legal and hygienic aspects.
While the report is several year old, the $h1t is still good and worthy of summarizing
Authors and Editors:
- Anna Richert Stintzing
- VERNA, Ecological Inc., Sweden
- Dr. Håkan Jönsson
- Dr. Caroline Schönning
- Kati Hinkkanen
- Dr. Elisabeth Kvarnström
- Dr. Zsofia Ganrot
- Margriet Samwel
- Sascha Gabizon
- Annemarie Mohr
- Publisher: WECF – Women in Europe for a Common Future
- Pages:42 1.35 mb
- It is formatted 3 columns / page which doe not lend itself well to computer screens and pdf readers
- It is a fast read to those in this field
- It is a good read for someone who knows little about this field
1 – Summary
2 – Dry Urine Diversion
3 – EU directives relating to dry urine diversion where urine and faeces
4 – Legal aspects
5 – Cold temperature aspects
- Freezing of urine
- Hygiene and treatment of urine
- Pharmaceuticals and hormones
- Hygiene and treatment of faeces
- Technical aspects: construction and maintenance of
- urine diverting toilets in climates with cold winters
- Pipes for urine
- Odour control with ventilation
- System for reuse of urine and faeces in crop production
- Home gardens
- Large Scale Agricultural Production
6 – Examples from pilot projects and research from the northern hemisphere
7 – Knowledge gaps and identified research needs
8 – Annex
Three key points from the Reportssummary are:
“There are functioning examples of dry urine diversion in regions in the world with cold winter climates. The examples presented in the report show that it is possible to arrange agricultural reuse of urine and faeces in large or small scale crop production.”
“The fact that there are only short periods during the year when urine can be used as a fertiliser place demands on a storage system for the urine. There are a few alternatives; one of the most economic may be to arrange storage on a farm, in covered storage containers previously used for animal urine.”
“There are still development needs and knowledge gaps. Some of these are related to temperate and cold climates, such as the fate of microorganisms in urine at temperatures below freezing. However, this should not be considered a major constraint to the development of dry urine diversion, since the risk is relatively low, and can be handled through combination with other hygienic activities.”
The report reprints 3 basic but useful tables from other organizations:
1: Recommended guideline storage times for urinea based on estimated pathogen contentb and recommended crop for larger systemsc (WHO, 2006).
2: Requirements on storage and allowed crops for diverted human urine that is collected from larger systems. (Swedish EPA, 2002).
3: Recommendations for storage treatment of dry excreta and faecal sludge before use at household and large-scale (municipal) levels. The treatments assume no
addition of non-sanitised material (WHO, 2006).
Again the report is a quick and easy read, providing a good preface to a much larger document that needs to be written on the subject. The report ends nicely, saying we need more research :
“There are some definite areas where there is a need of systematic research and development (R&D). Some of these, especially related to winter climate aspects, are specified in the following text.
One of the most discussed questions regarding urine diversion is the fate of pharmaceutical residues after excretion, and how this affects choice of collection and treatment of human excreta. Research on fate of pharmaceuticals in waste water treatment plants is being undertaken in Germany and Sweden. No known field studies are taking place on fate of pharmaceutical residues when urine or sewage sludge is applied to the soil. The current recommendation to use urine as a fertiliser in agriculture rests on the analysis that the soil system is well suited to digest harmful organic substances due to microbial life in the surface layers of soil. This would be an interesting field of study that can give valuable information on design of reuse systems.
Sanitisation of faeces is another aspect that needs attention. The WHO guidelines on the reuse of human excreta in agriculture mention the alkaline treatment by adding ashes or alkaline substances with a storage time of 6 month ( > 35 °C ) as a possible way to sanitise faeces, or 1,5 – 2 years storage time. The temperature intervals given do not cater for needs in temperate or cold climates, which means that knowledge on treatment of faeces in this region should be developed. Research on more simple and robust treatment methods is needed.
Suggested applied R&D projects
- Establishment of new pilot projects and evaluation of existing projects. Monitoring and evaluation of existing dry urine diversion projects is a costefficient way of generating knowledge. Dissemination of results, regardless of if they are positive or negative, from existing pilots is vital. The establishment of new pilot projects will also contribute to the bank of knowledge.
- Sanitisation of faecal fraction: research on requested storage in ambient or alkaline environment in temperate and cold climates (winters with temperatures far below zero).
- Sanitisation of faecal fraction: research on the implementation of chemical sanitisation of faeces with urea. This is an interesting method, but the practical implications need to be studied and developed.
- Sanitisation of urine: what happens in the urine when it is frozen and what are the implications for storage intervals?
- Pharmaceutical residues: studies of soil system when urine is used as a fertiliser. Effect on microbial community, speed of decomposition. Comparisons with sewage sludge, farmyard manure.
- Toilet design: development of risers and squat-plates for local production. Care given to needs of different users: children, disabled, elderly, men, women. Toilets of today need development since many do not divert as much urine as possible, and are unnecessarily difficult to clean.
- Systems analysis from an economic point of view. Comparison of investment and maintenance costs of urine diversion systems and conventional sanitation.
- Systems analysis from an environmental point of view. How do different activities affect the sustainability of the system, for example fertilisation strategies, choice of tank, joint measures or single toilets?
- What are the economical incentives for implementation of urine diversion? How to design the economical system with the regard to municipal responsibility and financial support/ interactions. How should the systems be organized and which are the most important drivers for the different stake holders.”
other related links
- Inactivation of bacteria and viruses in human urine depending on temperature and dilution rate.
- The Swedish Eco-Sanitation Experience pdf
- Ecosan Sanitation Facilities resources
- Reuse of faeces and urine – Appropedia: The sustainability wiki
- Guidelines for the safe use of wastewater, excreta and greywater. Volume 1: Policy and regulatory aspects
- Guidelines for the safe use of wastewater, excreta and greywater. Volume 2: Wastewater use in agriculture
- Guidelines for the safe use of wastwater, excreta and greywater. Volume 3: Wastewater and excreta use in aquaculture
- Guidelines for the safe use of wastwater, excreta and greywater. Volume 4: Excreta and greywater use in agriculture
- Human urine – Chemical composition and fertilizer use efficiency