Biosolids engineering and management by Lawrence K Wang; Nazih K Shammas; Yung-Tse Hung

By Lawrence K Wang; Nazih K Shammas; Yung-Tse Hung

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Plunger pump operating on a short stroke for long periods of time. 6b. Improper clearance adjustment on grinder pump. 7a. Excessive wear on shaft or cylinder. 6. Excessive wear on pumps. 7. Excessive leakage around seals on shafts and plungers. 5a. Sludge characteristics. 5. Grease build-up in raw sludge line. 8a. Replace stator and/or rotor. 8b. Reduce operation to 200 to 300 rpm. 8b. Excessive wear. 6b. Properly adjust clearance of cutters. 7a. Replace shaft or plunger, replace mechanical seals with water-lubricated seals.

1a. (1) Pump sludge more frequently. (2) Reduce speed of pump. Solutions 17 Source: US EPA (3). 8. Progressive cavity pump unable to transport sludge. 8a. Slippage occurring in pump due to wear on stators and rotors. 8b. Pump operating at excessive speeds. 6a. Plunger pump operating on a short stroke for long periods of time. 6b. Improper clearance adjustment on grinder pump. 7a. Excessive wear on shaft or cylinder. 6. Excessive wear on pumps. 7. Excessive leakage around seals on shafts and plungers.

Other important elements of this design are the methods and equipment to be used for unloading, storage, and distributing the sludge/biosolids over the site. 5. 21). K. K. Wang Fig. 21. Loading and unloading of sludge/biosolids in truck transport. 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.

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