General
National Id
Bulgaria_06
Site name
St. Panteleimon Home for children, Vidrare
Summary
The Women in Europe for a Common Future (WECF), implemented the first constructed wetland in Vidrare, Pravetz, Bulgaria, for on-site treatment of domestic waste water of a children's home combined with capacity building for professionals.
NUTS Code
Югозападен (Yugozapaden)
RBD code
BG1000
Transboundary
0
Data provider
REC
Source(s)
NWRM(s) implemented in the case study
Longitude
24.01
Latitude
42.99305
Site information
Climate zone
warm temperate moist
Mean rainfall
507
Mean rainfall unit
mm/year
Average temperature
11
Average imperviousness
100
Type
Case Study Info
Light or indepth?
Light
Average slope range
5.0
Monitoring maintenance
Monitoring impacts effects
1
Monitoring location
Laboratory
Performance
Performance impact estimation method
Edge of Field/Plot
Performance impact estimation information
Difference between samples in inflow and outflow
Design & implementations
Application scale
Building
Installation date
2011-04
Performance timescale
< 1 year
Area subject to Land use change or Management/Practice change (ha)
0,0399999991059303
Size
0,0659999996423721
Size unit
ha
Max water retention capacity
11
Max water retention capacity unit
m3/day
Constraints
Presence of many underground cables and pipes, which had not been mentioned in previous documentation.
Favourable preconditions
Existing sewerage, gully and river as receiving water, slope in the yard and available space
Outflow volume
11
Outflow volume unit
m3/day
Public consultation
1
Design contractual arrangement
| Arrangement type | Responsibility | Role | Comments | Name |
|---|
Design consultation activity
| Activity stage | Key issues | Name | Comments | |
|---|---|---|---|---|
|
Seminar
|
November 19th, 2010; 25 particiapsnts; 'Related to the construction of the first constructed wetland in bulgaria
|
|||
|
National Conference
|
April 29th, 2011 in Gran Hotel Sofia; Presenting constructed wetlands as a sustainable and cost-effective wastewater treatment system
|
Design land use change
| Land use change type |
|---|
Design authority
| Authority type | Role | Responsibility | Name | Comments | |
|---|---|---|---|---|---|
Lessons, risks, implications...
Key lessons
Small scale constructed wetland for water treatment could be good demonstration of specific type of NWRM with direct economic and water quality benefits. Constructed wetlands are so far rarely used in spite of the successful pilot tests.
Financing difficulties
0
Success factor(s)
| Success factor type | Success factor role | Comments | |
|---|---|---|---|
|
Financing possibilities
|
main factor
|
In rural areas, there is a lack of financial, technical and staff resources, thus low-tech, cost-efficient and sustainable wastewater management systemas are needed |
|
|
Attitude of relevant stakeholders
|
secondary factor
|
Financing
| Financing type | Comments | |
|---|---|---|
|
Other
|
German Federal Environment Foundation
|
Driver
| Driver type | Driver role | Comments | |
|---|---|---|---|
|
Organisation committed to it
|
main driver
|
WECF NGO
|
Financing share
| Financing share type | Share | Comments |
|---|
Policy, general governance and design targets
Policy description
Ground water contamination due to untreated sewage discharge
Part of wider plan
0
Policy target
| Target purpose | |
|---|---|
|
Pollutants Removal
|
Policy pressure
| Pressure directive | Relevant pressure |
|---|
Policy area
| Policy area type | Policy area focus | Name | Comments |
|---|
Policy impact
| Impact directive | Relevant impact |
|---|
Policy wider plan
| Wider plan type | Wider plan focus | Name | Comments |
|---|
Policy requirement directive
| Requirement directive | Specification |
|---|
Socio-economic
Costs investment
45000
Costs operational information
The operation and maintenance costs depends on the local cost of energy and staff. Require time and energy supply: time 1.5h/week; energy 2kWh/d; sludge disposal 36m3/yr
Costs total
45000
Costs total information
Investment costs: excavation and piping(12000), per-treatment step (6000); Soil filter: liner(6000), grave and sand(7000), pipes (9500), pumps (4500)
Ecosystem improved biodiversity
0
Ecosystem provisioning services
0
Ecosystem water supply
0
Ecosystem impact climate regulation
Not relevant for the specific application
Biophysical impacts
Retained water
272
Retained water unit
m3/month
Increased water storage
272
Increased water storage unit
m3/month
Ecosystem erosion control
0
Water quality overall improvements
Positive impact-WQ improvement
Soil quality overall soil improvements
Not relevant for this application
