What is greywater?
Various water-terms:
GREY WATER BLACK WATER DOMESTIC SEWAGE WATER COMPANY
GREY WATER
It is meant water that is used for domestic use and trade. This quality of "water" does not need the standard of drinking water quality to be used for flushing toilets, for cleaning or washing clothes or watering the garden .. The European standard 12056-1 defines gray water as a faecal-free, low polluted waste water. Link to: http://www.bosy-online.de/vortrag_stoerrlein.pdf
In the narrower sense is is the water from the outflow of bathtubs and shower trays, sinks and washing machines, the drain of kitchen is not included here, depending on the requirements of the gray water of the drainage of washing machines because of the resulting surfactants of washing powder and other substances added to either.
remains for the use of gray water that is left over the use of wastewater from bath, shower and sink.
The reuse of treated greywater is particularly suitable for daily toilet flushing, garden irrigation and for washing machines. Relatively harmless, I see the supply of toilet water. For the washing machine in addition a "potable water is required. See here the link that provides information on the relevant requirements of the particular use ...
http://www.i-water.de/de/grauwasser/index.html
BLACK WATER
black water, according to ISO 6107-7:1997 domestic sewage with fecal solids.
link to: http://www.naw.din.de/sixcms_upload/media/2666/Jahresbericht% 202007_naw.pdf
Domestic sewage
domestic wastewater consists of the waste water from kitchen, laundry, washrooms, toilets and similarly used water to water consumers
link papers Analysis: http://www.wasser-wissen.de/abwasserlexikon/d/dinnormen.htm
OPERATING WATER
In view of the gray water use so that the quality of water is connected, which is used in household and industry for uses that do not require a clear water with drinking water quality, such as water for toilet flushing
HOW DOES THE GREY WATER TREATMENT? The
me commercially known functioning systems operate according to the following steps.
first coarse filtration
second biological treatment of selbstansiedelnde bacteria. Injection of air, since the bacteria live aerobically, ie, they need oxygen. This is registered on the air.
3.Nachfiltration
4.Sedimentspülung
5th Storage
6.Pumpe to transport the treated water into the gray-water network
Note: The point is
2 of the actual cleaning process. So here contaminated with showering, bathing and washing your hands clean drinking water in particular by "organic matter". The bacteria that need oxygen to purify the contaminated water by processing these energy-rich organic substances and thus draw their life energy from it. What remains are salts that are soluble in water and so the cycle again available. Our sewage treatment plants operate on the same principle.
since bacteria are also living beings and die ... gradually formed a sludge of dead bacteria. He is flushed in the gray water treatment, with greywater to the sewer. By the way, given the large sewage treatment plant that dead bacteria ends up in sludge digestion tank and provides more energy in the form of biogas (methane gas)
links to two vendors:
http://www.pontos-aquacycle.de/pontos/de/produktinformationen / die.loesung.html
http://www.i-water.de/de/grauwasser/index.html
What can you save by GREY WATER SYSTEM?
In terms of increasingly scarce water resource is the saving of water alone in the toilet flush per year of about 14 000l, a high profit for the ecology of our world.
The savings also helps to save money.
Many European countries impose on the water bottom prices and consumer prices even higher fee for the waste water. GREY WATER is won, are also save sewage charges.
consumed in Germany is a 4 person household, 375 liters of water (and wastewater ...)
should it be from the baby to the elderly 125 l / day per person. The price for 1,000 liters of drinking water is not uniform, on average € 1.50. For waste water, this is also true, depending on the municipality is the waste water from different price. Anyway, he is on average higher than the water price. Overall 1000 l cost about 3 euros.
The operating costs for the gray water pump are not included. With gray water to flush down the toilet per person per day saved up to 40l werden.Pro year means a saving of 14 400 l according to € 432 (3 € for 1000l eligible). Ie 36 € a month ...
This calculation does not purport to be complete and region to region. The prices in other European countries also unterrscheiden erheblich.Schuld it are geological climatic conditions and political measures. In Spain, the price of water is for example sponsored by the State and prevents a classical comparison.
the ecological aspects and the cost savings should be a clue to the idea and realization of the dual use of water!
How can you resist the power of the gray water?
prerequisite for the operation of a gray water heat recovery system is to separate the gray water mixed timecode handling. For this, the drains from sinks, showers and washing machine Condensed be separate in a pipeline.
If you're in the construction phase, it is still possible with max as an additional beneficial effect of the pipes. 50mm diameter pipe insulation.
is in the boiler room of this Water heat recovery system through a simple tiles. The plant itself is a heat exchanger, a self-cleaning filter is installed upstream. It has the function to intercept large dirt particles and to feed at regular intervals of the sewers. In the heat exchanger, from the gray water up to 60% of its energy to the counter current of cold water that is heated during this process and a hot water tank as a forward or another buffer memory can be fed.
For an experienced sanitary engineer not a problem for yourself, it is not tangible, well-known sanitary ware manufacturer to offer complete modules.
gray water and energy
One cubic meter of gray water can be at least up to 15 kWh of energy recycling, which is a savings of about 50% of heat energy for hot water. This is a gray water heat recovery system is in terms of yield is about the order of a thermal solar system. However, such amounts of gray water can be achieved only in an apartment building.
per day for a person to fall about 80 l heated gray water, at least 4 people ca.330 l, corresponding to about 5 kWh.
therefore 150 kWh per month can be saved.
second Rainwater harvesting
rainwater harvesting is booming. Especially in new buildings always grab more clients technology back to the simple, saving valuable drinking water. Uncontroversial is to use rain water for garden irrigation and toilet flushing. When asked if rain water is also suitable for washing clothes, divorce, however, the ghosts. Hygienic reasons are given. If, however, still left the toilet flushing and garden water. After all, can indeed up to 9L per flush, savings of up to 80l per day in a 4 person household in fresh water.
Around 2.5 cubic meters of fresh water can be saved.
Technically, rainwater is washing much better suited for washing, drinking water than most. The reason is that Rain water contains no lime, and thus the washing active substances are consumed unnecessarily. Depending on the calcium content of drinking water can thus save up to 60% of detergent. And ultimately, calcification of the heaters is prevented, which saves energy and increases the life of the washing machine.
The reservations against rain water in the washing machine are irrational in general. Because the rain water quality in the cistern is usually better than you think. When professionally installed systems can now assume that the rain water quality corresponds to that of bathing water. Prerequisite for this is that the rainwater is stored cool and protected from light. Otherwise it would das Wachstum von Krankheitskeimen und Algen gefördert, was die Qualität des Regenwassers beeinträchtigt. Ein Einbau der Zisterne im Erdreich kommt diesen Kriterien entgegen.
In Spanien sind bei Neubauten solche Zisternen vorgeschrieben. Allerdings führt die mangelnde Qualität der Zisternen und die Unkenntnis der „fontaneros“ (sanitärfacharbeiter) die Regenwassernutzung auf den Gartenwassergebrauch. Immerhin ein Fortschritt.
Ein weitere Schwierigkeit bei spanischen Häuser ist die fehlende Dachrinne.
Hier wird das Dachwasser meist auf befestigte Aussenanlagen gespült. Hoch verschmutzt mit Sand ,Erde und Müll wird es auch nur zum Teil in die Zisternen geleitet..
Hier ist also ein grösserer Cost of cleaning necessary, a pre-switching of small sand trap and strainer can be installed with little effort.
terms of the current water shortage in Spain and in the light in Barcelona (May 2008), which is drinking water by tankers from France dragged, makes every effort sense!
In Spain, this rare pre-cleaning required by the architects and planners. The sensitivity of Energy Saving and Resource Building Care is indeed regulated, the professional implementation, however rarely to be found.
usually has a rainwater harvesting system two cleaning stages. The coarse materials such as e. B. Leaves or paper, other large organic contaminants are held back through a coarse sieve, the coarse particulate matter through a filter. This has a mesh size between 0.2 and 0.8 mm and should be cleaned at least once a year by hand. (Automatic cleaning is possible ..)
The second cleaning stage, the self-cleaning of rain water through settling of particles is by rest. The long residence time of water in the cistern there is an aggregation of suspended particles, which then settle on the bottom as sediment. In this process, there is evidence for the binding of bacteria to suspended solids, which increases the quality of rain water on. Each year about 1 mm of sediment on the floor abgesetzt. Dieser Bakterienfilm sollte nicht entfernt werden. Auch sollte im Interesse einer guten Regenwasserqualität von einer Reinigung der Zisterne abgesehen werden. Auf der Innenwand der Zisterne kommt es nämlich zur Ausbildung eines Bakterienfilms, der die Selbstreinigungskraft des Systems erhöht.
Stellen Sie sich die Reinigung so vor: Bakterien brauchen Energie zum Leben.
Die wenigen organischen energiereichen Kleinstpartikel bilden den Mittagstisch für die Bakterien, die sich automatisch ansiedeln.
Die Abfallstoffe der Bakterien sind dann ungiftige lösliche Substanzen.
Dies funktioniert allerdings nur solange, wie die Zisterne nicht unnötig durch fehlende Vorreinigung belastet wird. Übrigens:
Die biologische Reinigung unserer Kläranlagen funktioniert auch so wie die biologische Selbstreinigung der Flüsse und Teiche und Seen.
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