Encyclopedia of Environmental Science and Engineering, Volume I and II

136 ATMOSPHERIC CHEMISTRY is clear that atmospheric chemistry is quite complex. It has been through the diligent research of num ...

137 B BIOLOGICAL TREATMENT OF WASTEWATER INTRODUCTION Biological treatment is the most widely used method for removal, as well ...

138 BIOLOGICAL TREATMENT OF WASTEWATER carried out may be quite different under aerobic and anaero- bic conditions, the processe ...

BIOLOGICAL TREATMENT OF WASTEWATER 139 or Nt^ Noekot where: N 0 = Number of viable microorganisms per unit volume at time t = 0 ...

140 BIOLOGICAL TREATMENT OF WASTEWATER Combining Eqs. 4, 6 and 7 yields: (^) q Y   (8) and (^) qq S KS  max
. (9) Under con ...

BIOLOGICAL TREATMENT OF WASTEWATER 141 continued aertion under these conditions results in auto- oxidation of biomass. Although ...

142 BIOLOGICAL TREATMENT OF WASTEWATER growth of the culture unaffected by the toxic substance. In some cases, such as cyanide a ...

BIOLOGICAL TREATMENT OF WASTEWATER 143 solid, liquid or gaseous. The application of biological pro- cesses in degradation of tox ...

144 BIOLOGICAL TREATMENT OF WASTEWATER Genetically Engineered Microorganisms One of the promising approaches in biodegradation o ...

BIOLOGICAL TREATMENT OF WASTEWATER 145 as the ratio between total active microbial mass in treatment system, X T , and total qua ...

146 BIOLOGICAL TREATMENT OF WASTEWATER The available information strongly indicates that immo- bilized biological systems are le ...

BIOLOGICAL TREATMENT OF WASTEWATER 147 to filters is diluted with recirculated flow of treated effluent, settled effluent, settl ...

148 BIOLOGICAL TREATMENT OF WASTEWATER is related to filter depth, H, volumetric rate of flow per unit area, Q a , and specific ...

BIOLOGICAL TREATMENT OF WASTEWATER 149 Kinetic Rate: Depending upon the design and operating conditions, one or more of the kine ...

150 BIOLOGICAL TREATMENT OF WASTEWATER that have plug flow design, high BOD in influent causes higher oxygen demand at that poin ...

BIOLOGICAL TREATMENT OF WASTEWATER 151 present in suspended or colloidal form. The suspended BOD is rapidly absorbed in a short ...

152 BIOLOGICAL TREATMENT OF WASTEWATER E. In recent years, several wastewater treatment plants have been designed to operate wit ...

BIOLOGICAL TREATMENT OF WASTEWATER 153 this equation becomes similar to Eq. 28. In practice, this equation has proven to represe ...

it was operated at disk speeds of 13 and 17 rpm and flow rates of 1.9 to 2.5 LPM (0.5 to 0.65 USGPM). Similarly, Antoine^ observ ...

the conventional process becomes equal to the solid retention time, u x. Recently, several modifications have been made in the c ...