local agenda 21 local plan for sustainable development of bistriþa ...

BISTRITA
23
The wastewater treatment plant is located on the
south-western area of the municipality, on the righthand
bank of the river Bistrita, the right-hand side of
the Sieu river tributary and left-hand side of the
Somesul Mare river.
The sewerage system and wastewater treatment plant
were developed in 2 phases:
- phase I: between 1970 and 1973, to achieve a
flow capacity of 220 l/s
- phase II: between 1977 and 1983, to increase
flow capacity to 500 l/s
The sewerage system is run RAJA AQUABIS BN,
which collects wastewaters for cleaning in the old
treatment plant, with the flow capacity of 530 l/s, and
the new treatment plant, with a flow capacity of 500 l/s.
The old cleaning station has 3 stages (the first 2 are in
restoration):
- 2 mechanical-biological stages: one with a
capacity of 110 l/s, one with a capacity of 250 l/s
- one mechanical- chemical stage with a capacity
of 170 l/s
The new wastewater treatment plant has a
mechanical-biological stage for wastewater treatment
with a capacity of 500 l/s.
The following average volumes of wastewaters were
discharged from the wastewater treatment plants in
the year 2003:
- from old station: 8.32 l/s
- from new station: 421.95 l/s
In 2003, the river Bistrita – downstream from the
evacuation of the wastewater treatment plant (approx.
9 km) – was classed in the 4 th quality category
(classification is determined by the high content of
+
nutrients, NH4 -N =3.47 mg/l), due to the discharge of
insufficiently cleaned wastewater, with the treatment
plant lacking a third cleaning stage. The absence of
+
this stage leads to the continuing generation of NH4 -N
values above the limit for the 2 nd quality category
(reference objective).
The treatment station in Bistrita is not designed to
reduce the nutrients in wastewater, the water resulting
from the cleaning process has higher values than the
admissible limit.
1.1. 6 WASTE MANAGEMENT
Street sanitation
Bistrita town has a street surface area of 740,497 m 2 ,
662,998 m 2 of which, representing 275 streets and car
parks, are cleaned daily.
Street sanitation in Bistrita municipality is performed
by the private firm S.C.Codrisor S.R.L. The Bistritia
mayoralty monitors the activity from quality and
quantity points of view, and establishes the working
schedule.
The sanitation services include:
- manual sweeping of streets, transporting street
waste and snow by tractor during day time – S.C.
Codrisor S.R.L.;
- maintaining cleanliness in the winter when
manual street sweeping is not possible – S.C.Codrisor
S.R.L
- Mechanised spraying, cleaning culverts,
disposing of snow from pavements –mayoralty of
Bistrita municipality and S.C. Codrisor S.R.L. on
contractual basis.
Street waste is collected in 457 30-litre and 724 50litre
waste bins placed on the city streets; waste
collection and maintenance is performed by S.C.
Codrisor S.R.L.
During 2005, the mayoralty of the municipality will
apply the concession of the service of street sanitation
and the collection, transport and depositing of
municipal waste according to Order no. 87 from 30
August 2001 regarding the public sanitation services
for localities, approved by Law no. 139/2002.
Waste collection and transport
Collection of municipal waste is performed by two
companies: S.C. Urbana S.A. and S.C.Codrisor S.R.L.
according to a schedule that includes streets, areas
and hours, as approved by the mayoralty.
Commercial waste is collected by each firm using their
own containers of 120 litres and 240 litres, subsequent
to signing of a sanitation contract with one of the
above mentioned firms. The frequency of collection is
established in the contract and depends on the waste
quantity generated by the firms’ activity.
Collection of municipal waste is performed without a
prior selection in the personal waste bins of individual