By Lawrence K Wang; Nazih K Shammas; Yung-Tse Hung
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Extra info for Biosolids engineering and management
Special care should be used at all transfer points, take-up pulleys, and dump points to minimize biosolids spillage or splashing, or to provide surroundings that are easily cleaned. 15). The belts may change inclination at several points in their run. They are best cleaned by a combination brush and spray cleaner. K. K. Wang Fig. 15. Flexibly cleated and side walled flat belt conveyor. Source: US EPA (1). their mechanical components are similar to those on troughed belts; maintenance costs for mechanical drives and rollers are also similar.
Source: US EPA (19). 1. Construction cost includes truck purchase and load/unload facilities. Truck sizes of 10 yd3 and 30 yd3 are the most cost-effective for the volume of 25% total solids sludge/biosolids transported. Storage at loading site is not included. 2. Operation and maintenance cost includes truck maintenance, truck operation, and fuel; labor for truck and loading facility operation; and electric power and supplies for the loading facility. 3. Loading storage tank is sized to fill either a 10- or 30-yd3 truck in 20 minutes maximum.
Pipe bend fittings should be 45◦ or, if possible, 221/2◦ . Some cleaning tools will pass 90◦ bends, but such bends are likely to be trouble spots. Length/radius of bends should be checked with the tool supplier. d. A recording or totalizing flowmeter should be provided. If the tool gets stuck in the line, the flow record can be used to compute the number of gallons pumped since the tool was inserted. Thus, the tool can be located and retrieved. 5. The pipeline route should be selected for ease of maintenance.
Biosolids engineering and management by Lawrence K Wang; Nazih K Shammas; Yung-Tse Hung