Abstract:
A cleaning formulation comprising a cleaning agent, a particulate clay material and an aqueous carrier. In a preferred embodiment, the formulation has a pH less than about 1.0 and is characterized by: (i) at least a 90% reduction in viscosity at 25null C. at a shear rate of up to about 0.10 snull1, and (ii) a substantially unchanged viscosity for a period of at least 60 days. The cleaning formulation is thixotropic and has a highly desirable combination of acid stability, temperature stability, electrolyte stability and ultraviolet radiation stability.
Abstract:
There is disclosed an improved radiation source module having a power supply adapted to be at least partially immersed in a fluid being treated. In one embodiment, the power supply is partly immersed in the fluid being treated. In another embodiment, the power supply is fully submersible in the fluid being treated. A fluid treatment system comprising the radiation source module is also described.
Abstract:
A fluid treatment system having an inlet, an outlet, and a fluid treatment zone therebetween. The zone has an array of rows of radiation source assemblies. Each radiation source assembly has a longitudinal axis disposed at an oblique angle with respect to a direction of fluid flow. Each row has a plurality of radiation source assemblies in spaced relation in a direction transverse to the direction of fluid flow, to define a gap through which fluid may flow between an adjacent pair of assemblies. Preferably, all rows in the array are staggered with respect to one another in a direction orthogonal to the direction of fluid flow, such that the gap between an adjacent pair of radiation source assemblies in an upstream row of assemblies is partially or completely obstructed in the direction of fluid flow by a serially disposed radiation source assembly in at least one downstream row.
Abstract:
There is described an on-line device for predicting at least one fluid flow parameter in a process. In embodiment, the process in question comprises a flow domain having disposed therein a pre-determined portion in which a fluid flows and the device comprises a computer having: (i) a memory for receiving a database, the database comprising relative information in respect of a plurality of nodes or a plurality of particle pathways in the pre-determined portion; (ii) means to receive input data from the process, and (iii) means to calculate the at least one fluid flow parameter from the database and the input data. In another embodiment the process in question comprises a bounded flow domain having disposed therein a pre-determined matrix and the device comprises a computer having: (i) a memory for receiving a database, the database comprising location information for a plurality of nodes or particle pathways in the matrix, (ii) means to receive input data from the process, and (iii) means to calculate the at least one fluid flow parameter from the database and the input data. The device is particularly advantageously employed as a UV dosimeter.
Abstract:
A fluid treatment device, preferably for the treatment of water, is described. The device comprises a closed housing having a fluid inlet, a fluid outlet and a fluid treatment zone disposed between the fluid inlet and the fluid outlet. The fluid treatment zone comprises a first irradiation zone and a second irradiation zone. At least one fluid mixing element is interposed between the first irradiation zone and the second irradiation zone.
Abstract:
A radiation source module comprising a support member, a radiation source assembly connected to the support member and a seal disposed on a first surface of the module, the seal operable to provide a substantially fluid tight seal between the first surface and a second surface which is adjacent to the first surface.