Flocculation of small sludge particles using the addition of polymers is a necessity for efficient sludge thickening and dewatering to take place.
By using flocculation reactors, which give residence times for flocculation to occur of 1-3 minutes during mixing, flocculation can occur completely before the polymer-sludge mixture enters the thickener/dewaterer.
The agitator is designed to eliminate possible ragging problems.
Siljan Allards supplies flocculation reactors, the capacities of which are selected to suit thickeners/dewaterers of different capacities; In the table below, the sizes and retention times of different models of flocculation reactors are shown.
Model |
Diameter,m |
Height,m |
Retention time for the sludge-polymer mixing, in minutes |
||||
|
|
|
SF7 |
SF17 |
SF35 |
SF60 | SF120 DUO |
FR0.2 |
0,64 |
1 |
1,8 |
0,76 |
|
|
|
FR0.6 |
0,8 |
1,25 |
3,6 |
1,5 |
0,72 |
|
|
FR1.0 |
0,94 |
1,5 |
5,7 |
2,4 |
1,15 |
|
|
FR1.7 |
1,27 |
2 |
|
6,0 |
2,9 |
1,5 | 1,5 |
Siljan Allards AB, Phone +46(0)248-125
35 Fax +46(0)248-137 85 |
|
E-mail info@siljanallards.com www.siljanallards.com |
2 pcs of flocculation reactors FR1.7, before delivery to a waste water treatment plant in China