SuSanA - Forum Kunena Site Syndication http://forum.susana.org/ Fri, 24 Feb 2017 14:52:15 +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 Household greywater treatment in water-stressed regions in cold climates using an ‘Ice-Block Unit’:Perspective from the coldest capital in the world - by: nazimuddin http://forum.susana.org/component/kunena/36-constructed-wetlands-soil-filters-and-infiltration-beds/18295-household-greywater-treatment-in-water-stressed-regions-in-cold-climates-using-an-ice-block-unitperspective-from-the-coldest-capital-in-the-world#18295 http://forum.susana.org/component/kunena/36-constructed-wetlands-soil-filters-and-infiltration-beds/18295-household-greywater-treatment-in-water-stressed-regions-in-cold-climates-using-an-ice-block-unitperspective-from-the-coldest-capital-in-the-world#18295
A new study on household greywater treatment in the coldest capital of the world has just been published. The full paper can be downloaded from the following link:

authors.elsevier.com/a/1TEtY3QCo9JOB7

The study shows a novel, hybrid concept of a constructed wetland for the first time in a
water-stressed region in the coldest capital in the world, Ulaanbaatar, Mongolia. This system was based on storing water during the winter freezing period as an ice block, and then starting treatment during the summer/non-freezing period. Results showed that the maximum removal rates of chemical oxygen demand, ammonia, nitrite, total suspended solids, phosphorus,and Escherichia coli were up to 100%, 99%,97%, 97%, 87%, and 98%, respectively. The effluent met the neighbouring country, China's, municipal discharge standard of A grade effluent and could also be considered restricted and unrestricted irrigation water as reported in other studies. The system has proven potential from a technical point of view and can be scaled up to community or cluster levels. This would enable reduction of greywater-borne hazards in low, middle and high income countries with similar contexts.

Best regards

Nazim]]>
Constructed wetlands, soil filters and infiltration beds Mon, 20 Jun 2016 16:35:53 +0000
Re: Simple device to deliver water to CW in interval without external power needs or electronic gadgets - by: AquaVerde http://forum.susana.org/component/kunena/36-constructed-wetlands-soil-filters-and-infiltration-beds/8717-simple-device-to-deliver-water-to-cw-in-interval-without-external-power-needs-or-electronic-gadgets-qopen-designq#18255 http://forum.susana.org/component/kunena/36-constructed-wetlands-soil-filters-and-infiltration-beds/8717-simple-device-to-deliver-water-to-cw-in-interval-without-external-power-needs-or-electronic-gadgets-qopen-designq#18255 2. trail – more successful = 6.4 l/s flow within 100 mm diameter pipe (250 L in 39 s),









because of „Floating valve“ have now
- shorter arm
- smaller floater
- counter weighted (just by a piece of scrap metal)

It needs now a nicer finishing for the counter weight.
A flexible hoses instead of a bellows might do it too...


Regards,
Detlef]]>
Constructed wetlands, soil filters and infiltration beds Wed, 15 Jun 2016 16:30:19 +0000
Re: Simple device to deliver water to CW in interval without external power needs or electronic gadgets - by: AquaVerde http://forum.susana.org/component/kunena/36-constructed-wetlands-soil-filters-and-infiltration-beds/8717-simple-device-to-deliver-water-to-cw-in-interval-without-external-power-needs-or-electronic-gadgets-qopen-designq#18245 http://forum.susana.org/component/kunena/36-constructed-wetlands-soil-filters-and-infiltration-beds/8717-simple-device-to-deliver-water-to-cw-in-interval-without-external-power-needs-or-electronic-gadgets-qopen-designq#18245 First unsuccessful trail of floating-valve for "automated" distribution to a larger vertical CW:








Learning by doing:
1. in my educated guessing it needs a smaller DN160 mm floater and
2. to add a counter weight to keep the float JUST floating.
3. Maybe a shorter floater arm too...

This trail-report will be continued until it will function, maybe never ...

Just to encourage many of you to get hand-on by your self, to do trails on your own. Nobody is perfect from the beginning .

Good Luck
Detlef]]>
Constructed wetlands, soil filters and infiltration beds Tue, 14 Jun 2016 20:43:44 +0000
Re: Simple device to deliver water to CW in interval without external power needs or electronic gadgets - by: AquaVerde http://forum.susana.org/component/kunena/36-constructed-wetlands-soil-filters-and-infiltration-beds/8717-simple-device-to-deliver-water-to-cw-in-interval-without-external-power-needs-or-electronic-gadgets-qopen-designq#18060 http://forum.susana.org/component/kunena/36-constructed-wetlands-soil-filters-and-infiltration-beds/8717-simple-device-to-deliver-water-to-cw-in-interval-without-external-power-needs-or-electronic-gadgets-qopen-designq#18060 Schwimmerventil (float valve) for larger pre-treated sewage volumes:

just a simple Photoshop-"job" = just use from the shelf some simple pipe fittings, stainless steel hose clamps, one robust bellows to create your own float valve





Regards,
Detlef]]>
Constructed wetlands, soil filters and infiltration beds Fri, 20 May 2016 07:04:35 +0000