Pab Process for Advanced Waste Treatment.

摘要

A new tertiary treatment process has been developed utilizing the physical-chemical adsorption of soluble and colloidal organic material in the dilute final effluents of secondary biological processes onto granular media. The refractory organic material thus concentrated can be utilized by microorganisms growing at the interface of the media in the psuedo-high concentration substrate. The waste water and air flow co-currently upward through a media bed. The air provides oxygen for biological activity and agitation of the media bed to prevent clogging. The process was named the PULSED ADSORPTION BED (or PAB) PROCESS. The PAB process coupled with solids separation units such as mixed media filters can provide 70to 90percent removal of the organic material in the final effluent from conventional complete treatment facilities. A combined solids treatment system could be designed,constructed and operated at a total annual cost of approximately 4cents/1000gallons. (Author)