PERFORMANCE
STEEL.COM AMF system standard models are available for flow rate up to 150 cm./h.
Flow rates to the system do not require balancing and excellent performance can be achieved even with intermittent flows. Fat and grease removal efficiencies in excess of 90% are common, but in addition, a high percentage of total suspended solids are removed. Where suspended solids contribute to the BOD, obviously removal of these solids greatly reduces the BOD loading.
The AMF system is best used at the first stage of effluent pre-treatment: In the meat industry, for instance, fat end solids removal is essential prior to conventional biological treatment. Normally the problem arises whether to install a fine screen before or after a fat trap. One alternative results in the screen becoming blocked with fat, the other alternative results in the fat trap becoming blocked with solids. A AMF system removes solids and fat at the same time, in most cases removes the requirement for either a screen or fat trap.
The AMF system has proved extremely effective in treating raw dairy wastes for fat removal, resulting in greatly improved conventional aerobic/anaerobic treatment plant performances.
An added advantage of the system is the high oxygen transfer rate facilitated by the special aerator. In the tannery industry, for instance, this provides for oxidation of sulfides in addition to the solids removal application.
The AMF system, therefore, with the chemical dosing and flocculation equipment, can be used for the removal of substantial BOD loading, either on a continuous basis or in emergency overload situations. By the use of flocculants, colloidal material can be
floated together with the normal fat, grease and suspended solids contained in the effluent.
In many cases the AMF system can be used without chemical addition, however, with most organic wastes, BOD removal in excess of 60% can be achieved at a pretreatment stage, by the use of chemical dosing, flocculation and flotation.
Performance
