This relatively simple and low-cost aeretion system is designed to maintain stored slurry in a semi-liquid, and hence pumpable condition, irrespective of the length of the storage period.
The system employs a low energy con- sumption electric motor and air blower, proven electronic solenoid valves and self-closing neoprene non-return outlet valves. All the pipework is installed using high quality Class D uPVC which neither corrodes nor degrades.
Controlled by a time switch, the system
is fully automatic and would typically run for two one-hour periods each day with- out any need for human intervention. Furthermore, the running costs have been shown by independent evaluation to be as low as 26 pence per day for a medium sized slurry store. In the event of a tank being neglected, the S.A.M.S System is perfectly capable of mixing heavily crusted sludge.
All mechanical and electrical parts are mounted on a galvanized steel frame under a weatherproof removable hood at ground level outside the store. Air is piped up and over the side of the tank floor via a symmetrical pattern of outlet branches. These are "blown" several times in sequence during the operational
The introduction of air into the storage
tank has two main effects on the slurry -
• Effective mixing caused by the physical action of rising air bubbles.
• Odour reduction by the promotion of aer-
obic bacteria which digest toxins, fatty acids and ammonia, and reduces the biological oxygen demands of the sludge.
Martin Simpson Managing Director Deeside Mineral Water
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Mr Hamilton Smith Forgie
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