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US 2015/0027964 A1Published application
Sewage screening system
AssigneeAnglian Water Services Limited
InventorFrederick James Davis
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AssigneeAnglian Water Services Limited
InventorFrederick James Davis
Estimating the term…
A screening system comprises a tank (20) containing a sewage screen (30), wherein the tank is configured for attachment to a sewage channel, and to receive sewage flow from an upstream point of the channel, and then to direct the sewage flow through the sewage screen (30), and then to return the screened sewage flow back into the channel, at a downstream point, or directly to a downstream treatment, and wherein the tank (20) is configured to decrease the velocity of the sewage flow in the tank relative to the channel, such that grit can settle at the bottom of the tank, and wherein the sewage screen (30) comprises a working screening surface (31), a portion of which lies in a substantially horizontal plane, and is positioned below the invert level of the sewage channel at the upstream point, when in use. Screen and tank used within the before mentioned system as well as the method of screening sewage using the system are also disclosed.
A screening system comprising a tank containing a sewage screen, wherein the tank is configured for attachment to a sewage channel, and to receive sewage flow from an upstream point of the channel, and then to direct the sewage flow through the sewage screen, and then to return the screened sewage flow back into the channel, at a downstream point, or directly to a downstream treatment, and wherein the tank is configured to decrease the velocity of the sewage flow in the tank relative to the channel, such that grit can settle at the bottom of the tank, and wherein the sewage screen comprises a working screening surface, a portion of which lies in a substantially horizontal plane, and is positioned below the invert level of the sewage channel at the upstream point, when in use.
A method of screening sewage that flows in a sewage channel, comprising diverting the sewage flow from the channel into a tank or system, which is configured such that the velocity of the sewage flow is lowered and grit can settle at the bottom of the tank, wherein large particulate matter is removed by a screen situated in the tank, wherein at least part of the screening surface of the screen is in a substantially horizontal plane and positioned below the invert level of the sewage channel.
Dependencies are inferred from the claim text.