A. INSTALLATION GUIDE 2. OPERATING PRINCIPLE OF ECOROCK-5000 UNITS
PAGE
11 / 52
Installation and User guide – ECOROCK-5000 & BIOROCK Multirock Systems – 10-10-2017
BIOROCK requires the following performance of a PT in front of the ECOROCK unit(s):
Composition of normal domestic wastewater (according to EN12566-3+A2 Annex B.3.2):
Variation
BOD
5
*
1
:
150 - 500
mg O
2
/l
COD*
1
:
300 – 1000
mg/l
S.S.:
200 - 700
mg/l
KN:
25 - 100
mg/l
NH
4
-N:
22 - 80
mg/l
P-Total:
5 - 20
mg/l
*
1
: The ration between BOD
5
and COD should always be < 2
Minimum performance requirements of a Primary Tank*
2
:
Effluent PT
Average
EN 12566-6: 2008
BOD
5
:
100 - 350
mg O
2
/l
200 ± 50
mg O
2
/l
COD:
200 - 600
mg/l
S.S.:
40 - 150
mg/l
80 ± 20
mg/l
KN:
35 - 100
mg/l
NH
4
-N:
30 - 80
mg/l
P-Total:
4 - 20
mg/l
*
2
: The sampling should be done with a minimum 24 hour sampling
The effluent is easy biodegradable if the ratio of BOD
5
and COD is less than 2. Between 2 and 3 it is
partially biodegradable and greater than 3, the effluent is not biodegradable.
