SuSanA - Forum Kunena Site Syndication http://forum.susana.org/ Fri, 18 Apr 2014 13:07:54 +0000 Kunena 1.6 http://forum.susana.org/components/com_kunena/template/default/images/icons/rss.png SuSanA - Forum http://forum.susana.org/ en-gb Re: Drip irrigation and fertigation prospective: A case study of cabbage growing at the ATC, Mukono district -Uganda - by: Marijn Zandee http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#6171 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#6171
While I was with Eawag/Sandec I did a trial once specifically looking at blockages in "drippers" while using urine fertigation. I posted the link to the report once on the forum and I think it is also in susana library.

My main finding was that with the simple drip-kits and drip-line used in Nepal there was no significant blocking problem at a 1:3 mixing ratio. If more hi-tech drip-lines are used the story may be different.

The full report can also be found under:

www.eawag.ch/forschung/sandec/gruppen/EW..._Drip_Irrigation.pdf

regards

Marijn]]>
Irrigation, greywater or wastewater reuse Mon, 28 Oct 2013 08:35:22 +0000
Re: Drip irrigation and fertigation prospective: A case study of cabbage growing at the ATC, Mukono district -Uganda - by: Ashabrn http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#6020 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#6020 Answer: 60litres
2. How many m² per human daily urine production would you recommend?
Answer: At least 2litres at the end of the day.]]>
Irrigation, greywater or wastewater reuse Thu, 17 Oct 2013 05:55:57 +0000
Re: Drip irrigation and fertigation prospective: A case study of cabbage growing at the ATC, Mukono district -Uganda - by: ben http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#6015 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#6015
Thanks for sharing this report.

I read it with great attention as I worked on the subject a couple of years ago on a concept of shower-latrine which was using drip irrigation. (vidéo : and tech.handbook : www.susana.org/lang-en/library?view=ccbk...p;type=2&id=1409)

Unfortunatly at the time, for Budget and personal reasons we didn’t manage to realise the battery of tests necessary to proper confirm its eficiency in the field.

Just to compare it with a pragmatic application of your test, what quantity of urine per m² per month your fertigation represents, or simpler how many m² per human daily urine production would you recommend.

Ben]]>
Irrigation, greywater or wastewater reuse Wed, 16 Oct 2013 13:28:35 +0000
Re: Drip irrigation and fertigation prospective: A case study of cabbage growing at the ATC, Mukono district -Uganda - by: Ashabrn http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5992 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5992
Of course mixing urine you would expect the smell but not on plants.
If you carefully read the report, we carried out safety analysis that remove fears of pathogen existence.]]>
Irrigation, greywater or wastewater reuse Mon, 14 Oct 2013 08:22:35 +0000
Re: Drip irrigation and fertigation prospective: A case study of cabbage growing at the ATC, Mukono district -Uganda - by: F H Mughal http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5991 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5991
F H Mughal]]>
Irrigation, greywater or wastewater reuse Mon, 14 Oct 2013 07:21:14 +0000
Re: Drip irrigation and fertigation prospective: A case study of cabbage growing at the ATC, Mukono district -Uganda - by: Ashabrn http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5964 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5964
We have actually had a second study using Sukuma wiki but still that problem was not experienced.]]>
Irrigation, greywater or wastewater reuse Fri, 11 Oct 2013 07:24:27 +0000
Re: Drip irrigation and fertigation prospective: A case study of cabbage growing at the ATC, Mukono district -Uganda - by: JKMakowka http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5961 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5961 (Why not introduce ATC shortly here so that others learn more about the great practical research you are doing at the Appropriate Technology Centre?)

One question though: during your trials did you have ever any problems with blocking "drippers" due to urine precipitation or other solids in the irrigation solution?]]>
Irrigation, greywater or wastewater reuse Fri, 11 Oct 2013 06:44:08 +0000
Drip irrigation and fertigation prospective: A case study of cabbage growing at the ATC, Mukono district -Uganda - by: Ashabrn http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5959 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5959-drip-irrigation-and-fertigation-prospective-a-case-study-of-cabbage-growing-at-the-atc-mukono-district-uganda#5959
The drip irrigation study posted in her investigated the use of bucket kit drip irrigation and fertigation using urine to boost vegetable growing. The study and treatment plots where intervention was done and control plot which were used for comparisons purposes.The results of this study give a green light to the technology of drip irrigation and fertigation as a suitable affordable technology to boost food production in Uganda.]]>
Irrigation, greywater or wastewater reuse Fri, 11 Oct 2013 05:03:05 +0000
Re: Open Competition on Agriwaterpedia - by: JKMakowka http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5784-open-competition-on-agriwaterpedia#5811 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5784-open-competition-on-agriwaterpedia#5811
Seems a bit like the groups within the giz should work together more closely, as this and SuSanA certainly share a lot of common topics.]]>
Irrigation, greywater or wastewater reuse Mon, 30 Sep 2013 07:14:01 +0000
Open Competition on Agriwaterpedia - by: AquaVerde http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5784-open-competition-on-agriwaterpedia#5784 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5784-open-competition-on-agriwaterpedia#5784 forwarded E-Mail from GIZ, MS Kraemer, Friederike Johanna:

Dear colleagues and partners,


www.agriwaterpedia.info is a NEXUS open source platform initiated in cooperation between GIZs Department 45 – “Rural Development and Agriculture” and the Department 44 – “Water, Energy and Transport” for the enhancement and compilation of knowledge and experience on one of the most crucial questions of the 21st century: sustainable use of water resources for food production. It provides practitioners and experts in development cooperation with approaches and good practices and draws data from experiences and lessons learned in the field from a variety of developing countries.

In order to increase the scope of the NEXUS open-source knowledge platform www.agriwaterpedia.info, an open competition has been launched to attract more articles from the diverse group of stakeholders in the water and agricultural sector.

With this open competition we invite global experts and all interested in the field of the water resources, food security and climate change to contribute their knowledge to this open source platform.

A jury of internationally renowned experts will choose and award the twenty-best contributions. The purpose of the open competition is to expand and enrich the content of this new knowledge platform to become a focal platform which enhances capacity for the sustainable use of water for food production.

We'd be obliged if you can circulate this call for contributions in your networks!

Please find attached a PDF file with guidelines for participation.

Kind regards,
your Agriwaterpedia-Team]]>
Irrigation, greywater or wastewater reuse Fri, 27 Sep 2013 16:33:12 +0000
Re: Reuse of Municipal Reclaimed Wastewater for Irrigation and Agriculture - by: F H Mughal http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5266-reuse-of-municipal-reclaimed-wastewater-for-irrigation-and-agriculture#5270 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5266-reuse-of-municipal-reclaimed-wastewater-for-irrigation-and-agriculture#5270 www.susana.org/lang-en/library?view=ccbk...mp;type=2&id=350

Vol 4 of WHO publication:
www.susana.org/lang-en/library?view=ccbk...p;type=2&id=1004

F H Mughal]]>
Irrigation, greywater or wastewater reuse Sun, 11 Aug 2013 12:02:36 +0000
Re: Reuse of Municipal Reclaimed Wastewater for Irrigation and Agriculture - by: F H Mughal http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5266-reuse-of-municipal-reclaimed-wastewater-for-irrigation-and-agriculture#5268 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5266-reuse-of-municipal-reclaimed-wastewater-for-irrigation-and-agriculture#5268
F H Mughal]]>
Irrigation, greywater or wastewater reuse Sun, 11 Aug 2013 11:36:21 +0000
Re: Reuse of Municipal Reclaimed Wastewater for Irrigation and Agriculture - by: F H Mughal http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5266-reuse-of-municipal-reclaimed-wastewater-for-irrigation-and-agriculture#5267 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5266-reuse-of-municipal-reclaimed-wastewater-for-irrigation-and-agriculture#5267 And one link:
www.susana.org/lang-en/library?view=ccbk...p;type=2&id=1782

F H Mughal]]>
Irrigation, greywater or wastewater reuse Sun, 11 Aug 2013 11:26:08 +0000
Reuse of Municipal Reclaimed Wastewater for Irrigation and Agriculture - by: F H Mughal http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5266-reuse-of-municipal-reclaimed-wastewater-for-irrigation-and-agriculture#5266 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/5266-reuse-of-municipal-reclaimed-wastewater-for-irrigation-and-agriculture#5266
In many countries, development planners are looking for alternate sources of water. Water is also becoming a source of conflicts in some regions. Some countries in Middle-East, where annual precipitation is lower than 200 mm, depend on small rivers and underground aquifers for water. Drinking water comes from costly water desalination plants.

In such situations, source substitution appears to be the most appropriate alternative, especially when it comes to the use of water for irrigation and industrial purposes. For wastewater use in irrigation and agriculture, FAO and WHO has specified some guidelines, since use of wastewater poses some health risks. The wastewater needs to meet water quality guidelines, before it can be used for irrigation.

I’m interesting in knowing the status of wastewater use in various countries. Those colleagues, who have the reports, may kindly share the information through this forum. On my part, I’m sharing some publications, which includes 2 publications of IWMI on Pakistan.

F H Mughal]]>
Irrigation, greywater or wastewater reuse Sun, 11 Aug 2013 11:17:25 +0000
Re: User perception and acceptance of recycled water - by: muench http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/4578-user-perception-and-acceptance-of-recycled-water-includes-colour-issue#5077 http://forum.susana.org/forum/categories/40-irrigation-greywater-or-wastewater-reuse/4578-user-perception-and-acceptance-of-recycled-water-includes-colour-issue#5077 Thanks for these interesting contributions, I have enjoyed reading them.

Gerwin: have you reached any conclusions yet?

On the issue of colour, I have come across this information in our wonderful technology review on constructed wetlands (even if I say so myself ):

2.8.4 Colour aspects

The effluent from any biological wastewater treatment
process such as a constructed wetland can have a yellowish
or brownish colour. This is caused by humic substances,
such as humic acids or humins (Figure 4). The colouration
may reduce the social acceptance of wastewater reuse.
Humic acids originate from the biological degradation of
organic matter, being the unbiodegradable fraction of organic
matter. Humic acids are a natural compound of soil, lake and
river water. They are not harmful to the environment but they
have a negative impact on disinfection processes with
chlorine or UV radiation.

When treated wastewater is used for toilet flushing, it is
easier to use coloured porcelain for the toilet bowl than to
attempt to remove the coloration, since humic substances
can be only removed by advanced technologies such as
activated carbon, ozone, photo catalytic oxidation (Guylas et
al., 2007; Abegglen et al., 2009).

From the main author’s experiences, greywater after
treatment in a constructed wetland tends to have no colour.
On the other hand, domestic wastewater or blackwater after
treatment in a constructed wetland is often, but not always,
slightly yellow or brown (see for example Figure 4).




Source:
Hoffmann, H., Platzer, C., von Münch, E., Winker, M. (2011). Technology review of constructed wetlands - Subsurface flow constructed wetlands for greywater and domestic wastewater treatment. Deutsche Gesellschaft für Internationale Zusammenarbeit (GIZ) GmbH, Eschborn, Germany.
www.susana.org/lang-en/library/library?v...mp;type=2&id=930
(also available in Spanish)

Regards,
Elisabeth]]>
Irrigation, greywater or wastewater reuse Thu, 18 Jul 2013 11:49:44 +0000