In the ongoing efforts to extend appropriate sanitation to the millions in the world lacking it, it benefits all to show that the byproduct of sanitation is not waste, but a valuable agricultural resource. Some even call it the new gold. This tangential research below is important in helping get that gold and getting to that goal.
New research by
- Y Dilsad Yilmaze - Civil and Environmental Engineering Department, Villanova University, Villanova, PA, USA
- Goksel Demirer – Department of Environmental Engineering, Middle East Technical University, Ankara, Turkey
Nitrogen and phosphorus recovery from anaerobic co-digestion residues of poultry manure and maize silage via struvite precipitation
Anaerobic digestion is commonly used for the stabilization of agricultural and animal wastes. However, owing to the stringent environmental criteria, anaerobic digester effluents need to be further treated to reduce nutrient loads to the receiving water bodies. Struvite precipitation is one of the promising techniques applied for this purpose. Yet, in the majority of cases, struvite precipitation is only applied to the liquid phase of anaerobic digester effluents. This study investigated the recovery of nutrients from both the liquid and the solid phases of the phase-separated effluent of a full-scale biogas plant co-digesting poultry manure and maize silage. Struvite precipitation in the liquid phase led to 72.1% and 95.1% average removal efficiencies of ammonium-nitrogen (NH4-N) and orthophosphate respectively. Changing the external phosphorus source did not make any statistically significant difference in nutrient removal. An acidic phosphorus-dissolution process was applied to the solid phase sample to obtain a phosphorus-enriched solution. More than 90.0% of both NH4-N and PO4-P were recovered from the phosphorus-enriched solution with the amendments of magnesium and phosphorus. In the experiments performed without any addition of external magnesium- and phosphorus-containing chemicals, almost complete (99.6%) PO4-P recovery and partial (14.6%) NH4-N recovery were obtained. The results of this study could contribute to the understanding of nutrient recovery from anaerobic digestion residues of manure and agricultural wastes by struvite precipitation.
Side note while WASHLink appreciates the above efforts, we appeal for more researchers to seek out open access scientific and scholarly journals to publish their work. more on OA by an example
- Anaerobic digestion tabled in Franklin (franklinmatters.org)
- UK: 60,000 TPA anaerobic digestion biogas plant approved in Yorkshire (vernetblog.wordpress.com)
- Anaerobic digester for electricity, fertiliser production (vanguardngr.com)
- $20 million program would send chicken bones, pizza boxes to Madison biodigester (host.madison.com)
A great video to watch while waiting to see the recording of Rose George when she spoke at Ted 2013
Rose George thinks, researches, writes and talks about sanitation. Diarrhea is a weapon of mass destruction, says the UK-based journalist and author, and a lack of access to toilets is at the root of our biggest public health crisis. In 2012, two out of five of the world’s population had nowhere sanitary to go.
The key to turning around this problem is to “stop putting the toilet behind a locked door,” says George. Let’s drop the pretense of “water-related diseases” and call out the cause of myriad afflictions around the world — “poop-related diseases” that are preventable with a basic toilet. Once we do, we can start using human waste for good.
George explores the problem in her book The Big Necessity: The Unmentionable World of Human Waste and Why It Matters and in a fabulous special issue of Colors magazine called “Shit: A Survival Guide.”
Related Links for Rose George
- Go home and talk s***: Rose George at TED2013
- Contact info , book info and a whole lot more on her web site….
- Animated homage to her Book: The Indoorfins present: The Big Necessity :-)
Other powerful TED , TEDX, TED-Ed links
- TEDxYYC – “David Damberger – Learning from Failure” -Wonderful Reflection on his WATSAN Experience
- TEDx HOW NEXTDROP IS USING CELL PHONES, CROWDSOURCING TO GET WATER TO THE THIRSTY.
- TEDxBerlin Noa Lerner:X-runner. Sanitation Social Business
- TEDxAmsterdamWomen Anjali Sarker – Toilet+ overcoming my childhood fear TEDX event
- Revolutionizing Sanitation in Developing Nations: Yu-Ling Cheng at TEDxYouth@Toronto
- Where we get our fresh water – Christiana Z. Peppard TED-Ed
- Turning recycled wastewater into a commoditized resource : Valérie Issumo at TEDxLausanne
- The Wello Water Wheel Story : Cynthia Koenig at TEDxGateway
6-8 May 2013
The purpose of this conference is to provide a forum for researchers and practitioners to exchange the latest developments in sludge management.It will give possibilities to examine and discuss the different challenges connected to resource recovery through treatment and disposal of wastewater sludge.
The conference covers sludge management and anaerobic digestion with a broad holistic system perspective. It includes the recycling of nutrients such as phosphorus and nitrogen by focusing on upstream treatment to reduce harmful substances in wastewater, as well as on the production of biogas as a fuel for vehicles. The certification of treated sludge is another important condition for the possibilities to recycle sludge to farmland areas.
Conference also want to share knowledge, practices and ideas for the future directions of process development. The sludge treatment is one of the key issues to be solved. The aim of the conference is to take a major step forward to where all aspects of sludge management are addressed.
- Production and utilization of biogas
- Nutrient recovery processes
- Processes for hygienization of sludge
- The need for a holistic approach including i.e. environmental effects from sludge handling/management in the total performance efficiency of wastewater treatment
- Use of sludge for energy generation including combustion and supercritical gasification
- Emerging contaminants in sludge – upstream separation and optimization to decrease negative effects by detoxification
- Physical and chemical pre-treatment processes, including chemical conditioning, thickening, dewatering, drying
- Modelling of anaerobic processes
- Methane emission from sludge treatment
Erik Dahlquist at email@example.com and Tel. +46-21-151768
Conference Programme Committee Chairman
Monica Odlare at firstname.lastname@example.org and Tel. +46-21-101611
Conference Programme Committee Secretary
IWA- the global network for water professionals
The International Water Association is a global reference point for water professionals, spanning the continuum between research and practice and covering all facets of the water cycle. Through its network of members and experts in research, practice, regulation, industry, consulting and manufacturing, IWA is in a better position than any other organisation to help water professionals create innovative, pragmatic and sustainable solutions to challenging global needs.
The strength of IWA lies in the professional and geographic diversity of its membership — a global mosaic of national, corporate and individual member communities. Our members are leaders in their field and represent:
- Researchers – where solutions begin
- Utilities – managing water services worldwide
- Consultants – connecting problem owners with solution providers
- Industry – creating sustainable water solutions
- Regulators – safeguarding public health
- Equipment manufacturers – translating ideas into products
The IWA network is structured to promote multi-level collaboration among its diverse membership groups, and to share the benefit of knowledge on water science and management worldwide. The Association helps make the right connections at the right time, thereby sharing cutting-edge research and practice that allows the water sector shape its future.
all content for this post comes from the IWA sites
The proceedings from the DRY TOILET 2009 conference held by Global Dry Toilet Association of Finland are available They are a great resource and available at http://huussi.net/tapahtumat/DT2009/full.html
The Suomi version of the home page is http://www.huussi.net/
|1 PROMOTING ECOLOGICAL SANITATION IN ORDER TO
Namibia, Finland, Tajikistan, Nepal, Uganda
|2 HEALTH AND SAFETY ASPECTS RELATED TO DRY
||Philippines, India, Argentina, Belarus, Nigeria|
|3 IMPLEMENTING ECOLOGICAL SANITATION IN
|4a PROSPECTS AND CHALLENGES IN RE-USE OF EXCRETA|
|4b PROSPECTS AND CHALLENGES IN RE-USE OF
Kenya, Ghana, Burkina Faso,
| 5 CHALLENGES IN IMPLEMENTING ECOLOGICAL
|6 GENDER ASPECTS
RELATED TO DRY SANITATION
DEVELOPMENT OF DRY TOILETS
Bangladesh and others
DEVELOPMENT OF DRY TOILETS continues
Ethiopia, Inner Mongolia, China
Kyrgyzstan, Tanzania,Kenya, India
|Side event SUSTAINABLE
SANITATION FOR TOURISM AND RECREATION
Republic of Karelia, Russia, Kazakhstan, Finland
While reuse of human biowaste/ biosolids (along the lines urine feces) for fertilizing is generating great excitement in the developing world, the United States is cautious in its embrace.
The following excerpt is from great story that explores this.
It is by SANDY LONG of the River Reporter addressing some of the concerns as she explores an honest mans adventure in making a lively-hood collecting the content of septic systems, processing it and them applying to the growing fields.
“Biosolids big bucks A ‘resource’ in more ways than one”
“NARROWSBURG, NY — Some used to call it nightsoil, hearkening to the
practice of applying raw human excrement to farm fields to increase soil fertility under cover of darkness. Back then, local waste hauler Ned Lang’s father applied septage to his own farm at the top of Peggy Runway, now Steep Hill Road in Pennsylvania. “My father utilized this resource, and we had the best crops around,” said Lang, who today provides biosolids, or treated sewage sludge, to 34 sites in Wayne County and two in Pike County, PA.”
“The name of Lang’s product is OrganaGrow, and it is the end result of a process that begins with everything we flush away or pour down a drain. His company, EnviroVentures, Inc., based in Narrowsburg, processes the wastewater it collects from residential septic systems, municipal wastewater treatment plants and food processors throughout the four-county region of Pike and Wayne in Pennsylvania and Sullivan and Orange in New York. “We bring it in, mix it, kill it, and send it out,” Lang said.”
To meet “…regulations, Lang draws on the services provided by Diane Garvey, president of Garvey Resources, a consulting firm specializing in biosolids for wastewater treatment plants, processors and research organizations”
Lang uses lime to elevate the pH to “…above 12, which kills the pathogens [bacteria, protozoa, enteric viruses and helminth worms].” It is we worth reading the full article on the process an application.
Ms Long also presents the concerns starting with :
“Whether it comes from cows, chickens, pigs or humans, all manure has an odor. But increasing concerns about the antibiotics and growth hormones fed to animals are now being extended to human waste products, which contain the residues of countless pharmaceuticals in addition to the largely unidentified substances contained in many household cleaning products.”
She does a great job presenting the facts that extend from this. She presenting the viewpoints of knowledgeable people including Lang’s and others like biologist Dr. Sandra Steingraber, “a distinguished visiting scholar at Ithaca College.”
She concludes with the financial potential for this product which is amazing:
“One thing is certain—there is no end to the source material. And there is a potential gold mine available to those positioned to manage the product. According to Harkinson, the Carlyle Group paid $772 million for the sludge-residuals company Synagro.”
the full article can be found “here” at riverreporter.com
- January 29, 07 The Carlyle Group to Acquire Synagro for $5.76 Per Share
- Google scholar -