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9. Product introduction
The mixers are fitted with motors of 1 to 25 hp (0.9 to 18.5 kW).
The flowmakers are fitted with motors of 1 to 11 hp (0.7 to 8.0
kW).
7
10
11
9
Fig. 34 SMD mixer
11
10
8
Fig. 35 SMG mixer
8
10
11
Fig. 36 SFG flowmaker
20
5
2
4
3
20
5
2
4
3
7
20
5
2
4
7
3
Pos.
Description
2
Column profile
3
Depth blocker
4
Motor bracket
7
Motor housing
8
Gearbox
9
Clamping ring
10
Propeller
11
Hub
9.1 Applications
Grundfos mixers and flowmakers are designed for mixing
applications within these areas:
•
municipal and industrial wastewater treatment
•
industrial processes
•
sludge treatment
•
agriculture
•
biogas plants.
In order not to overload the mixers and flowmakers and expose
them to corrosion, observe the following liquid limitations:
Liquid
temperature
pH value
Maximum
SMD
dynamic viscosity
SMG, SFG
Maximum density
Chloride content
Chloride content
* The liquid temperature range is stated on the nameplate. See
section
5. Installing the
product.
For the mixing of liquids exceeding the values stated above,
contact Grundfos.
9.1.1 Mixers
Mixers are suitable for applications involving sludge with a typical
dry solids content as stated in the table below. Mixers are also
suitable for a wide range of other applications involving similar
liquids such as slurry and paper pulp.
Activated sludge
Selector zones
Anoxic zones
Bivalent zones
Anaerobic zones
Primary sludge
Secondary sludge, SMD
Secondary sludge, SMG and SFG
Digested sludge, SMD
Digested sludge, SMG and SFG
Wastewater tank without screen
Wastewater tank with sand
41-104 °F (5-40 °C)
(140 °F (60 °C))*
4-10
250 cP (mPas)
500 cP (mPas)
3
3
66 lb/ft
(1060 kg/m
)
≤ 200 ppm (200 mg/l) for
stainless steel 304 (1.4301)
≤ 1000 ppm(1000 mg/l) for
stainless steel 316 (1.4404)
% dry solid
0.5 % DS
0.5 % DS
0.5 % DS
0.5 % DS
0.5 % DS
≤ 3 % DS
≤ 4 % DS
≤ 6 % DS
≤ 4 % DS
≤ 8 % DS
≤ 2 % DS
≤ 2 % DS
21
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