Wastewater components
Example 1.7
Area
Note
Catchment for North-plant
Catchment for South-plant
no.
1980
1987
2005
1980
1987
2005
Annual dry-weather volumes
Households
mill m 3 /yr
1)
0.69
1.00
1.24
0.22
0.29
0.35
Slaughterhouse
- " -
2)
0.25
0.37
0.37
-
-
-
Vegetables cannery
- " -
3)
0.05
0.06
0.07
-
-
-
Other industries
- " -
4)
0.55
0.79
1.02
0.11
0.25
0.39
Infiltration
- " -
5)
0.60
0.80
0.80
0.20
0.25
0.25
Total
millm 3 /yr
2.14
3.02
3.50
0.53
0.79
0.99
Average dry-weather volume
(weekdays)
Households
m 3 /d
6)
1,890
2,740
3,400
600
790
960
Slaughterhouse
- " -
7)
1,000
1,480
1,480
-
-
-
Vegetables cannary
- " -
8)
250
300
350
-
-
-
Other industries
- " -
7)
2,200
3,160
4,080
440
1,000
1,560
Infiltration
- " -
6)
1,640
2,190
2,190
550
680
680
Total
m 3 /d
9)
6,980
9,870
11,500
1,590
2,470
3,200
Average max. dry-weather hour
(weekdays)
Households
m 3 /h
10)
160
230
285
50
65
80
Slaughterhouse
- " -
11)
165
245
245
-
-
-
Vegetables cannery
- " -
11)
40
50
60
-
-
-
Other industries
- " -
12)
275
395
510
55
125
195
Infiltration
- " -
70
90
90
25
30
30
Total
m 3 /h
710
1010
1190
130
220
305
1) Assumed water consumption: 1980: 55m 3 /yr, 1987: 65m 3 /yr and 2005: 80m 3 /yr per capita.
2) Estimate made on the basis of water consumption during the years 1971-76. The slaughterhouse
has planned an expansion of the production to max. 8,000 slaughterings per week (in 1979 approx.
4,800 pigs were slaughtered per week).
3) Estimate made on the basis of water consumption during the years 1971-76.
4) Total volume (based on water consumption and reduced by large-scale consumers) is divided
according to industrial area into catchment for North- and South-plant, respectively. Newly
developed industrial areas have for example been included by 5,000 m 3 /(ha · yr). The water
consumption for existing industries is assumed to be unchanged in the planning period.
5) Infiltration is estimated at 0.15 m/yr (approx. 0.051/(s·ha)).
6) Consumption period: 365 d/yr.
7) Consumption period: 250 d/yr.
8) Consumption period: 200 d/yr.
9) In the first part of 1979 an average of approx. 6,400 m 3 I d has been measured at the North-plant on
weekdays with dry weather.
10) Hourly factor for the average day : 2.
11) Hourly factor for the average day: 4, based on measurements in 1979.
Calculation of wastewater volumes, Nykebing F (Denmark). The slaughterhouse is FSA and the vegetables
cannery Samodan /14/.
1.2. Wastewater components
Wastewater components can be divided into different main groups as shown in
Table 1.5. In the following the composition of different types of wastewater is
shown, based on domestic wastewater and municipal wastewater without any
essential industrial influence.
26
Example 1.7
Area
Note
Catchment for North-plant
Catchment for South-plant
no.
1980
1987
2005
1980
1987
2005
Annual dry-weather volumes
Households
mill m 3 /yr
1)
0.69
1.00
1.24
0.22
0.29
0.35
Slaughterhouse
- " -
2)
0.25
0.37
0.37
-
-
-
Vegetables cannery
- " -
3)
0.05
0.06
0.07
-
-
-
Other industries
- " -
4)
0.55
0.79
1.02
0.11
0.25
0.39
Infiltration
- " -
5)
0.60
0.80
0.80
0.20
0.25
0.25
Total
millm 3 /yr
2.14
3.02
3.50
0.53
0.79
0.99
Average dry-weather volume
(weekdays)
Households
m 3 /d
6)
1,890
2,740
3,400
600
790
960
Slaughterhouse
- " -
7)
1,000
1,480
1,480
-
-
-
Vegetables cannary
- " -
8)
250
300
350
-
-
-
Other industries
- " -
7)
2,200
3,160
4,080
440
1,000
1,560
Infiltration
- " -
6)
1,640
2,190
2,190
550
680
680
Total
m 3 /d
9)
6,980
9,870
11,500
1,590
2,470
3,200
Average max. dry-weather hour
(weekdays)
Households
m 3 /h
10)
160
230
285
50
65
80
Slaughterhouse
- " -
11)
165
245
245
-
-
-
Vegetables cannery
- " -
11)
40
50
60
-
-
-
Other industries
- " -
12)
275
395
510
55
125
195
Infiltration
- " -
70
90
90
25
30
30
Total
m 3 /h
710
1010
1190
130
220
305
1) Assumed water consumption: 1980: 55m 3 /yr, 1987: 65m 3 /yr and 2005: 80m 3 /yr per capita.
2) Estimate made on the basis of water consumption during the years 1971-76. The slaughterhouse
has planned an expansion of the production to max. 8,000 slaughterings per week (in 1979 approx.
4,800 pigs were slaughtered per week).
3) Estimate made on the basis of water consumption during the years 1971-76.
4) Total volume (based on water consumption and reduced by large-scale consumers) is divided
according to industrial area into catchment for North- and South-plant, respectively. Newly
developed industrial areas have for example been included by 5,000 m 3 /(ha · yr). The water
consumption for existing industries is assumed to be unchanged in the planning period.
5) Infiltration is estimated at 0.15 m/yr (approx. 0.051/(s·ha)).
6) Consumption period: 365 d/yr.
7) Consumption period: 250 d/yr.
8) Consumption period: 200 d/yr.
9) In the first part of 1979 an average of approx. 6,400 m 3 I d has been measured at the North-plant on
weekdays with dry weather.
10) Hourly factor for the average day : 2.
11) Hourly factor for the average day: 4, based on measurements in 1979.
Calculation of wastewater volumes, Nykebing F (Denmark). The slaughterhouse is FSA and the vegetables
cannery Samodan /14/.
1.2. Wastewater components
Wastewater components can be divided into different main groups as shown in
Table 1.5. In the following the composition of different types of wastewater is
shown, based on domestic wastewater and municipal wastewater without any
essential industrial influence.
26