A novel method and apparatus for treating wastewater is described which involves the use of a downflow bioreactor filled with active anaerobic granular biomass. A specific combination of extracts of plants is taught, as well as principles for varying the formulations based on categorizing plants into one of three groups, Energy, Bio-Intelligence, and Organization and selecting several plants from each group. One or more of the stored documents are identified as versions of the input document responsively to the association rate, and an identification of the stored documents that are versions of the input document is outputted. If an instruction to continue the interrupted printing is received, control is performed to resume the interrupted printing. The virtual desktops in turn connect the technical support personnel to the IT infrastructure and business applications. The method includes scanning a document in the network scanner that includes the IP address, generating the image of the document, storing the image of the scanned document, generating a URL to connect to the stored image, and providing the generated URL.