Opsamling, opbevaring og udnyttelse af urin fra ... - Miljøstyrelsen

In the gentlemen's lavatory there has been a stand urinal with a stainless steel
drain and with controlled, automatic flush from two cisterns. The urinal has
had an automatic flush approx. every 15-20 minutes, using an unknown
quantity of water.
With the exception of the sedimentation tank, the existing toilet system has
been replaced by a source-diverting system. Four source-diverting, doubleflush,
porcelain closets as well as a waterless, gel-coated, fibreglass wall urinal
have been established. The surface of the urinal makes the urine glance off.
Inside the urinal there is a siphon, which constitutes an odour seal in
combination with a sealing liquid.
The segregated urine/flush water of the urinal bowl is led into storage tanks
made of polyethylene. The remaining wastewater is still led into the
sedimentation tank. The cycle of the application of the tanks was planned to
be 6 months' collection in tank 1, and after that 6 months' storage during the
filling of tank 2. The two tanks are each emptied once a year at 6-month
intervals. The capacity of the tanks, however, has turned out to be larger, i.e. a
possible storage period of more than 12 months.
Chapter 6: The Act on installation and spreading of urine
Systems for treating wastewater fall under the Environmental Protection Act
and the Building Act. This chapter contains a short comment on the
legislation relevant to the establishment of a source-diverting wastewater
system. When the permission is given for the establishment of a wastewater
system including the collection of human waste products in a collection tank,
it must also be ensured that emptying, transportation and final disposal take
place in a proper way.
No general test and approval conditions are laid down for urine-diverting
toilets. Therefore, each installation must be granted separate approval. This
also applied to the urinal at the time of establishment, but later a VA approval
has been granted. The pipe installations of a wastewater system must be made
in accordance with the Discharge Code DS 432.
Wastewater, including human waste products with agricultural value, may be
used for agricultural purposes according to the Sludge Regulations (regulation
no 49 of January 20 th 2000 on the application of waste products for
agricultural purposes). The county may give permission to make use of these
products. The applications of urine and other human waste products depend
on the way they have been treated. Basically, they are comparable with night
soil; but in case of further treatment of the products to the effect that they no
longer may be considered as night soil, they can be used in farming and
private gardening (according to the guidelines from the Environmental
Protection Agency, no 5/1999 on the regulations regarding wastewater
permits etc.). The treated end product may be compared with residual sludge
regarding restrictions on use laid down for sanitary reasons (cf. appendix 3 of
the Sludge Regulation).
Chapter 7: Experience from installation and operation
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