| 主权项 |
1. A system for treating a fluid used for hydraulic fracturing, comprising:
a chlorine dioxide treating unit having an inlet and an outlet, wherein the chlorine dioxide treating unit is configured to add chlorine dioxide to a continuous flow of inlet fluid received through the inlet to create a treated fluid, and to output a continuous flow of the treated fluid though the outlet; a fluid supply pipe which includes an inlet that receives a supply of fluid that is to be used for hydraulic fracturing; at least one header that is coupled to the fluid supply pipe, the at least one header including an inlet pipe that is coupled to the inlet of the chlorine dioxide treating unit and an outlet pipe that is coupled to the outlet of the chlorine dioxide treating unit; an analyzer unit that determines a residual concentration of chlorine dioxide present in the fluid in the fluid supply pipe at a location sufficiently downstream from the at least one header that chlorine dioxide added to the fluid in the fluid supply pipe via the outlet pipe has had an opportunity to react with bacteria and/or biological contaminants in the fluid; a control valve that is mounted to at least one of the inlet pipe coupled between the at least one header and the inlet of the chlorine dioxide treating unit and the outlet pipe which is coupled between the outlet of the chlorine dioxide treating unit and the at least one header; and a controller that is coupled to the control valve and the analyzer unit, wherein the controller sends a control signal to the control valve to selectively vary a flow rate of fluid through the control valve based on the signal generated by the analyzer unit such that the continuous flow of treated fluid output by the chlorine dioxide treating unit and mixing with the fluid in the fluid supply pipe results in a desired residual concentration of chlorine dioxide being present in the fluid tested by the analyzer unit. |
