Download Conveyance of Residuals from Water and Wastewater Treatment by Sludge Treatment, Utilization, Reclamation, and Disposal PDF

By Sludge Treatment, Utilization, Reclamation, and Disposal Committee of the Environmental and Water Resources Institute of the American Society of Civil Engineers

The therapy of water and wastewater leads to the creation of residual solids that needs to be dealt with. those solids normally are focused to lessen the water content material ahead of their priceless use or disposal. As those solids are extra processed and dealt with, their intrinsic properties-such as viscosity, rheology, flowability, and texture-change. even if a lot as been written to explain the chemical features of those residuals, merely constrained details has been complied describing their dealing with attribute and acceptable technique of delivery. the target of this handbook is to supply a reference rfile that the practitioner can use to figure out the dealing with features of residuals and to pick acceptable conveyance structures. The monograph has been prepared into 9 chapters.

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The stationary boundary layer is claimed to protect the pump discs from impact abrasion.

1979). Sewage sludge characterization by vacuum drying. Filtration and Separation, May/June, pp. 1-3. D. (1938). Viscosity of pseudo-plastic properties of sewage sludges. , vol. 10, pp. 3-25. , and E. Weisberg (1956). Bound water and activated sludge bulking. Sewage Ind. Wastes, vol. 28, no. 4, pp. 558-574. C. (1986). Principles of Colloid and Surface Chemistry. , New York. Hsu, C-C. (1992). S. Thesis, Department of Civil and Environmental Engineering, Duke University, Durham, NC. , and A. Kouzeli-Katsiri (1987).

Secondary sludge is gelatinous because of its biological origin and contains bound water (see Chapter 2). These characteristics greatly affect the ability of the sludge to settle and to release water in dewatering operations. 025. The specific gravity of the sludge will be a function of the solids concentration (outlined earlier in Table 1-1). Particle size also varies considerably, as do particle surface charge and degree of hydration. Sludge temperature, pH, and degree of septicity also affect the way sludge behaves.

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