Backflow / Backwater Valve

I had a question regarding the placement of a backflow valve. I am in a rural area with a 1000 gal septic tank and lateral lines. My problem is that during times of heavy or prolonged rain my drainage field becomes saturated. This saturation results in water being sent back from the lateral lines to the septic tank eventually filling the tank. My question is this: Could a backflow valve be installed between the junction box and the septic tank? Everything I have seen online shows these valves being installed between the septic tank and house. My thought process for putting the valve between the tank and junction box is that during these heavy rain periods we could still use our septic tank.

Backflow / Backwater Valve