Low bed reinforced surface flow constructed wetland system and operation methods thereof

The invention provides a low bed reinforced surface flow constructed wetland system and operation methods thereof. The constructed wetland system comprises a water inlet pipe, water distribution weirs, a bed body, water outlet weirs and a water outlet pipe, wherein the bed body is filled with a matrix, the water inlet pipe and the water outlet pipe are arranged on the bed body, the water distribution weirs and the water outlet weirs are arranged on one side of the water inlet pipe and one the side of the water outlet pipe in the bed body respectively, the bottom surface of the bed body is inclined from a water inlet end to a water outlet end, the inclination is 3.5%-5%, and low beds are formed through ridging on the matrix surface. The low bed reinforced surface flow constructed wetland system has two operation methods including a submerged type and a non-submerged type. The low bed reinforced surface flow constructed wetland system has small occupied area and low investment and operation cost, the operation and maintenance management are convenient, the contact area of the matrix is increased, the absorption and filtering efficiency of the matrix is higher, emerged plants, submerged plants and floating plants are matched and planted, the plant diversity is improved, the sewage purification effect is improved, more appropriate living environment is provided for aquatic organisms, and the food chain of the constructed wetland system is more complete.