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Stofkoncentrationer i regnbetingede udledninger fra fællessystemer

 

 
Table 5.3
Overview of SMC-values reported in the literature, grouped by country. Literature references can be found in chapter 4.

Investigation

No. of catchments

SS (mg/l)

COD (mg/l)

Tot-N (mg/l)

Tot-P (mg/l)

 Comment
USA

NURP1)

31

212

104

2,9

0,7

 Residential areas

NURP1)

5

191

62

1,6

0,4

 Industrial areas

NURP1)

20

394

92

1,7

0,5

 Mixed land use

NURP1)

10

148

82

1,5

0,3

 Commercial

Berkley

-

100

200

-

-

  

Cleveland

-

-

308

-

-

  

Columbia

-

622

382

-

-

  

Milwaukee

2

212-321

161-264

-

-

  

Des Moines

-

413

-

-

-

  

Detroit

-

274

-

-

-

  

Minnapolis

-

413

-

-

-

  

New York

2

306-347

358-481

-

-

  

Racine

2

178-551

-

-

-

  

Rochester

-

273

-

-

-

  

San Francisco

5

91-655

100-188

-

-

  

Seattle

-

162

176

-

-

  
Canada

Flere undersøgelser

-

190

-

8,3

1,4

 Overløbsvand
Holland

Loenen

1

303

271

10,42)

2,9

  

Oosterhout

1

260

389

15,22)

4,8

  

Bodegrave

1

105

148

9,72)

2,1

  

Kerkrade

1

320

243

13,42)

3,0

  
Germany

Hürt

1

  

222

      

Munich-Harlaching

1

163

274

222)

8,3

  

Stuttgart-Büsnau

-

177

-

-

-

  
Swizerland

Zürich

-

-

70

-

-

  
England

Flere undersøgelser

-

237-635

120-560

-

-

 Overløbsvand

Bradford

-

237

-

-

-

  

Brighthouse

-

647

-

-

-

  

Lancaster

-

271

209

-

-

  

Northampton

-

370

-

-

-

  
France

Flere undersøgelser

4

200-450

80-200

3,3-6,12)

0,8-1,8

  

Le Marais

1

307

428

-

-

  

Poissy

1

751

1005

      
Norway

Oslo

1

721

530

8,2

2,4

  

Sandefjord

1

424

268

14,4

4,0

  

Trondheim

1

510

352

-

3,0

  

All investigations

Variation

  

91-751

62-1005

1,5-22

0,3-8,3

  
1) USEPA, 1983. Data from separate storm sewers significantly influenced by illicit wastewater connections. Catchments where SMC for COD is below 50 mg/l are excluded.
2) Nitrogen is measured as Kjeldahl-nitrogen.