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Zimba the Automatic Chlorine Doser / Chlorinator: Suprio Das at TEDxGateway

Tue, 17Sep2013 Comments off

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

other  related TED /  TEDx talks mentioned on this site

1st International Terra Preta Sanitation Conference Aug 2013

Mon, 17Jun2013 1 comment

1st International Terra Preta Sanitation Conference Aug 2013

Location:Hamburg University of Technology. The campus is located in Hamburg-Harburg.

Dates: Wednesday, 28  –  Saturday  31 August 2013

Background

…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

Thursday
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

Friday
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

Click here to go to the conference website

Organisation Committee

Institute of Wastewater Management and Water Protection at TUHH
GFEU e. V.
WECF

Co-Organisers

Institute of Environmental Technology and Energy Economics at TUHH
German WASH Network
UNESCO IHE
BDZ

all details are from their site

Sustainable fertilizer reclaimed from waste: The mighty P with the Lovely Struvite

Tue, 05Mar2013 Comments off

Student in greenhouse

    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

Waterless Urinals: A Resource Book

Thu, 21Feb2013 Comments off

This is a Wonderful 39 page  Technical document  on covering  all aspect  of Waterless Urinals and some variants that incorporates
the core ideas.

 waterless urinal

written by

  • Dr V M Chariar
  • S Ramesh Sakthivel

from forward

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

  1. Waterless Urinals
    1. 1.1  Advantages of Waterless Urinals and Reuse of Urine
    2. 1.2  Demerits of Conventional Urinals
  2. Functioning of Waterless Urinals
    1. 2.1  Sealant Liquid Traps
    2. 2.2  Membrane Traps
    3. 2.3  Biological Blocks
    4. 2.4  Comparative Analysis of Popular Odour Traps
    5. 2.5  Other Types of odour Traps
    6. 2.6  Installation and Maintenance of Waterless Urinals
  3. Innovative Urinal Designs
    1. 3.1  Public Urinal Kiosk 21
    2. 3.2  Green Waterless Urinal
    3. 3.3  Self Constructed Urinals
  4. Urine Diverting Toilets
  5. Urine Harvesting for Agriculture
    1. 5.1  Safe Application of Urine 3
    2. 5.2  Methods of Urine Application
  6. Other Applications of Urine
  7. Challenges and the Way Forward
  8. References and Further Reading
The book has a solid collection of tables and diagrams that support the text
  • 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
Among many topics the Doc  weighs pros and cons of of traps to prevent odor and gases for escaping .Most of the solutions  have cost / maintenance barriers that limit feasibility to particular set of cases. India is a large county and need a variety of solutions as does the rest of the world.
We will  will  be interested to learn more about Zerodor
“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
further notes from forward

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.

Link to download  book & A deeper overview:

with excerpts can be found on the the India Water Portal site  more….

Prepared By

Stanford Nitrogen Group – Energy from Waste Nitrogen – Wastewater Treatment research

Mon, 28Jan2013 Comments off

 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:

Wastewater as a Clean Energy Source:

  …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….

Paper: Nitrogen removal with energy recovery through N2O decomposition:

by Yaniv D. Scherson ,  George F. Wells ,  Sung-Geun Woo ,  Jangho Lee ,  Joonhong Park ,  Brian J. Cantwell and Craig S. Criddle

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. ….

Researchers use rocket science for sustainable waste treatment process

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.

“Sewage Fed Biorefineries A Foundation for Urban Sustainability”

Fri, 05Oct2012 3 comments

This a great TEDX by Kartik Chandran at TEDxColumbiaEngineering

Redefining the model for urban sewage treatment / sanitation  addressing

Waste recover-  Key Chemicals

Energy Recovery

Sustainability

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.”

A good read: The roots of inaction: Understanding and overcoming the obstacles to greater investment in scaling-up effective diarrhea treatment

Tue, 21Aug2012 Comments off

I urge you to read the  PLoS Blog  post by Oliver Sabot. While ORS is not the the end game,   ORS is unquestionably crutial in the ability to get to the end game : WASH /WATSAN for all.

The roots of inaction: Understanding and overcoming the obstacles to greater investment in scaling-up effective diarrhea treatment

By PLoS Guest Blogger
Posted: August 20, 2012

“”In the second of two posts guest blogger Oliver Sabot from the Clinton Health Access Initiative reflects on the challenge and opportunity of scaling-up access to effective treatment for diarrhea, the second largest cause of child mortality globally. The posts …”

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