Patent ID: 8859989

Claim:
Open channel water treatment apparatus, comprising: a first module including (i) a first row of elongate ultraviolet radiation source assemblies having respective parallel longitudinal axes disposed at an oblique angle with respect to a direction of water flow through the open channel, and (ii) a second row of elongate ultraviolet radiation source assemblies having respective parallel longitudinal axes disposed at an oblique angle with respect to the direction of water flow through the open channel, the first and second rows of elongate ultraviolet radiation source assemblies being coupled to a first module element, the longitudinal axes of the first and second rows of elongate ultraviolet radiation source assemblies being substantially parallel, the longitudinal axes of the first row of elongate ultraviolet radiation source assemblies being staggered with respect to the longitudinal axes of the second row of elongate ultraviolet radiation source assemblies in a direction orthogonal to the direction of the water flow, a spacing between the first and second rows of elongate ultraviolet radiation source assemblies being equal to V; and a second module including (i) a third row of elongate ultraviolet radiation source assemblies having respective parallel longitudinal axes disposed at an oblique angle with respect to the direction of water flow through the open channel, and (ii) a fourth row of elongate ultraviolet radiation source assemblies having respective parallel longitudinal axes disposed at an oblique angle with respect to the direction of the water flow through the open channel, the third and fourth rows of elongate ultraviolet radiation source assemblies being coupled to a second module element, the longitudinal axes of the third and fourth rows of elongate ultraviolet radiation source assemblies being substantially parallel to each other and to the longitudinal axes of the first and second rows of elongate ultraviolet radiation source assemblies, the longitudinal axes of the third row of elongate ultraviolet radiation source assemblies being staggered with respect to the longitudinal axes of the fourth row of elongate ultraviolet radiation source assemblies in the direction orthogonal to the direction of the water flow, a spacing between the third and fourth rows of elongate ultraviolet radiation source assemblies being equal to V, wherein a spacing between the second and third rows of elongate ultraviolet radiation source assemblies is equal to T, and wherein T is greater than or equal to V, and wherein the first and second modules are disposed so as to overlap, whereby proximal ends of the third row of elongate ultraviolet radiation source assemblies overlap distal ends of the second row of elongate ultraviolet radiation source assemblies in a direction orthogonal to the direction of the water flow.