1results about How to "Improve nitrification capacity" patented technology

This invention provides a tidal flow constructed wetland for treating rural domestic sewage, comprising a concrete impermeable layer disposed at the bottom and around the perimeter of the pool. Within the concrete impermeable layer, from bottom to top, are a uniformly distributed water pipe layer, a first filler layer, a second filler layer, a third filler layer, and a covering layer. One end of the uniformly distributed water pipe layer has an inlet pipe, and the bottom of the third filler layer has an outlet pipe. An aeration pipe is also located within the third filler layer. Wetland plants, preferably local dominant wetland plant species, are planted on the covering layer. The first filler layer is a mixture of slow-release carbon source and alkali source, the second filler layer is a mixture of sulfur and iron, the third filler layer is a filter adsorption filler, and the covering layer is gravel filler. This invention offers advantages in treating rural domestic sewage, including good purification effect, simultaneous nitrogen and phosphorus removal, siphon self-control, low infrastructure and operating costs, and convenient maintenance.