Abstract: The present invention generally relates to a system and method for treating spent caustic effluent using chlorine dioxide solution. The system comprises a spent caustic storage tank for receiving spent caustic obtained from refinery operations; an acid storage container connected to the spent caustic storage tank for neutralizing free alkali content with a mineral acid to eliminate unwanted chemical reactions associated with free caustic present in spent caustic with ClO2; a heat exchanger unit engaged for reducing temperature of spent caustic to 35-45° C. from high temperature raised due to heat of neutralisation at least one of a cavitation (mixing) chamber or venturi mixing equipment mechanically connected downstream of the heat exchanger unit for adding CIO solution to the spent caustic solution to oxidize sulphide/thiols content for complete reduction of sulphide/mercaptane and reduction of 80-90% of COD.

Abstract: Techniques are presented for identifying mobile devices within a coverage region of a wireless station. Positions for mobile devices, if any, within the coverage region are determined. It is then determined whether the positions are within one or more defined areas, called “notification areas” herein. Additionally, selected mobile devices within notification areas are sent messages. The selected mobile devices are selected via certain criteria, including, for instance, campaign specifications and subscriber information. A message can be sent to a mobile device if the subscriber corresponding to the mobile device has indicated an acceptance of a category of notifications for the message and for the publisher who is publishing the notifications. The category could be traffic conditions and the publisher could be a Department of Transportation having responsibility for a particular freeway. These are two examples of multiple criteria for selecting mobile devices to which messages could be sent.

Abstract: Techniques are presented for identifying mobile devices within a coverage region of a wireless station. Positions for mobile devices, if any, within the coverage region are determined. It is then determined whether the positions are within one or more defined areas, called “notification areas” herein. Additionally, selected mobile devices within notification areas are sent messages. The selected mobile devices are selected via certain criteria, including, for instance, campaign specifications and subscriber information. A message can be sent to a mobile device if the subscriber corresponding to the mobile device has indicated an acceptance of a category of notifications for the message and for the publisher who is publishing the notifications. The category could be traffic conditions and the publisher could be a Department of Transportation having responsibility for a particular freeway. These are two examples of multiple criteria for selecting mobile devices to which messages could be sent.

Abstract: Techniques are presented for identifying mobile devices within a coverage region of a wireless station. Positions for mobile devices, if any, within the coverage region are determined. It is then determined whether the positions are within one or more defined areas, called “notification areas” herein. Additionally, selected mobile devices within notification areas are sent messages. The selected mobile devices are selected via certain criteria, including, for instance, campaign specifications and subscriber information. A message can be sent to a mobile device if the subscriber corresponding to the mobile device has indicated an acceptance of a category of notifications for the message and for the publisher who is publishing the notifications. The category could be traffic conditions and the publisher could be a Department of Transportation having responsibility for a particular freeway. These are two examples of multiple criteria for selecting mobile devices to which messages could be sent.