Air lift type sewage collection system for pond

The utility model provides an air lift type pond sewage collection system, a pond is round, square or rectangular when being overlooked, and the whole bottom of the pond is in a pot bottom shape, namely, the periphery of the pond is shallow, and the pond is gradually deepened to the middle. The system comprises a sewage collection module, a sewage pumping module and a gas stripping module, and the sewage collection module comprises a sewage collection tank arranged in the center of the bottom of a pond; the fish blocking frame covers the dirt collecting tank, when the fish blocking frame is overlooked and observed, the fish blocking frame can completely cover the dirt collecting tank, and the fish blocking frame is of a hollow structure; the sewage pumping module comprises a sewage suction pipe, a sewage pump and a sewage pump, wherein one end of the sewage suction pipe extends into the sewage collecting tank; the sewage pump is arranged outside the pond, and the other end of the sewage suction pipe is commun