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In 2018, Bulgaria had 332 urban waste water agglomerations of more then 2 000 population equivalent (p.e). These agglomerations generated a total load of 7 060 902 p.e. 90% of this load is connected to collecting systems and 5% addressed through Individual and Appropriate Systems (storage or septic tanks, micro-stations,...). These agglomerations are connected to 1 primary treatment plant, 7 secondary treatment plants and 104 more stringent treatment plants. All these treatment plants have a total design capacity of 8 582 178 p.e.
Agglomeration : Generated load by collection
Generated Load by collection type (population equivalent – p.e.)

Generated Load by collection type (population equivalent – p.e.)

Destination | 2018 |
---|---|
Collected by collecting system | 6,336,719 pe, 89.7 % |
Individual and Appropriate Systems | 348,437 pe, 4.9 % |
Discharged without treatment | 375,746 pe, 5.3 % |
Total | 7,060,902 pe, 100 % |
*pe: Population equivalent, *%: Rate |
---|
Generated Load by sewage network type (population equivalent – p.e.)

Generated Load by sewage network type (population equivalent – p.e.)

Network type | 2018 |
---|---|
Separative and combine system | 11,848 pe 1 na |
Combine system | 32,773 pe 2 na |
No information | 7,016,281 pe 329 na |
*pe: Population equivalent, *na: Number of agglomerations |
---|
Agglomeration : Generated load by compliance
Total generated load by compliance (population equivalent – p.e.)

Total generated load by compliance (population equivalent – p.e.)

Compliance state | 2018 |
---|---|
Compliant | 2,100,408 pe |
Not Compliant | 4,958,230 pe |
Not relevant | 2,264 pe |
Total | 7,060,902 pe |
*pe: Population equivalent |
---|
Number of agglomerations by compliance

Number of agglomerations by compliance

Compliance state | 2018 |
---|---|
Compliant | 107 |
Not Compliant | 224 |
Not relevant | 1 |
Total | 332 |
*: Number of elements |
---|
Waste water treatment plant : Load entering by compliance
Total load entering by compliance (population equivalent – p.e.)

Total load entering by compliance (population equivalent – p.e.)

Compliance state | 2018 |
---|---|
Compliant | 3,670,170 pe |
Not Compliant | 1,062,819 pe |
Not connected | 0 pe |
Total | 4,732,989 pe |
*pe: Population equivalent |
---|
Number of treatment plants by compliance

Number of treatment plants by compliance

Compliance state | 2018 |
---|---|
Compliant | 83 |
Not Compliant | 29 |
Not connected | 144 |
Total | 256 |
*: Number of elements |
---|
Waste water treatment plant : Load entering by treatment type
Total load entering by treatment type (population equivalent – p.e.)

Total load entering by treatment type (population equivalent – p.e.)

Treatment type | 2018 |
---|---|
More stringent treatment | 4,438,759 pe |
Primary treatment | 1,535 pe |
Secondary treatment | 292,695 pe |
Not connected | 0 pe |
Total | 4,732,989 pe |
*pe: Population equivalent |
---|
Number of treatment plants by treatment type

Number of treatment plants by treatment type

Treatment type | 2018 |
---|---|
More stringent treatment | 104 |
Primary treatment | 1 |
Secondary treatment | 7 |
Not connected | 144 |
Total | 256 |
*: Number of elements |
---|
Agglomeration : generated load by agglomeration size
Total generated load by agglomeration size (population equivalent – p.e.)

Total generated load by agglomeration size (population equivalent – p.e.)

Size | 2018 |
---|---|
< 10,000 pe | 946,206 pe |
10,000 to 100,000 pe | 2,489,487 pe |
> 100,000 pe | 3,625,209 pe |
Total | 7,060,902 pe |
*pe: Population equivalent |
---|
Number of agglomerations by size

Number of agglomerations by size

Size | 2018 |
---|---|
< 10,000 pe | 233 |
10,000 to 100,000 pe | 88 |
> 100,000 pe | 11 |
Total | 332 |
*: Number of elements |
---|
Waste water treatment plant : Total load entering and discharged
Total load entering and discharged

Total load entering and discharged

2018 | ||
---|---|---|
Parameter | Entering | Discharged |
BOD | data not available | 40.10 tons/year |
COD | data not available | 14,695.63 tons/year |
N | data not available | 3,042.21 tons/year |
P | data not available | 333.21 tons/year |
BOD, COD, N, P concentration

BOD, COD, N, P concentration

2018 | ||
---|---|---|
Parameter | Entering | Discharged |
BOD | data not available | 0.09 mg/l |
COD | data not available | 34.16 mg/l |
N | data not available | 7.07 mg/l |
P | data not available | 0.77 mg/l |
MS Level statistics
Sludge destination

In 2018, 53,758 Tons DS of sludge was generated
Sludge destination

In 2018, 53,758 Tons DS of sludge was generated
Destination | 2018 |
---|---|
Discharged into surface waters : Pipelines | 0.0 |
Discharged into surface waters : Ships | 0.0 |
Discharged into surface waters : Others | 0.0 |
Re-used: Soil and agriculture | 29,857.0 |
Re-used: Others | 8,834.6 |
Disposed: Landfill | 3,680.3 |
Disposed: Incineration | 0.0 |
Disposed: Others | 11,386.3 |
Missing | 0.0 |
Total | 53,758.3 |
mslReuseOthers is recultivation of terrains, biogas, compost with red Californian worms; mslDisposalOthers is temporary disposal at drying fields
Legal compliance
Legal compliance for collection in p.e.

Legal compliance for collection in p.e.

Year | Compliant | Not compliant | Not relevant |
---|---|---|---|
2018 | 6,327,953 | 707,952 | 24,997 |
Legal compliance for collection by number of agglomerations

Legal compliance for collection by number of agglomerations

Year | Compliant | Not compliant | Not relevant |
---|---|---|---|
2018 | 161 | 168 | 3 |
Legal compliance for 2nd treatment in p.e.

Legal compliance for 2nd treatment in p.e.

Year | Compliant | Not compliant | Not relevant |
---|---|---|---|
2018 | 2,795,376 | 3,869,958 | 19,394 |
Legal compliance for 2nd treatment by number of agglomerations

Legal compliance for 2nd treatment by number of agglomerations

Year | Compliant | Not compliant | Not relevant |
---|---|---|---|
2018 | 120 | 206 | 6 |
Legal compliance for 3rd treatment in p.e.

Legal compliance for 3rd treatment in p.e.

Year | Compliant | Not compliant | Not relevant |
---|---|---|---|
2018 | 1,532,449 | 4,074,888 | 759,109 |
Legal compliance for 3rd treatment by number of agglomerations

Legal compliance for 3rd treatment by number of agglomerations

Year | Compliant | Not compliant | Not relevant |
---|---|---|---|
2018 | 47 | 42 | 243 |