The invention discloses an ecological
combined treatment method and device for rural distributed
sewage. The method comprises the steps of A) rural
sewage collection and pretreatment; B) treatment by a
biological filter; C) treatment by an artificial
wetland and a
stabilization pond; D) ecological landscape configuration. The device is characterized in that a main water inlet pipeline is respectively connected with a lattice
pool and a regulation
pool, the regulation
pool is connected with a horizontal flow
biological filter through a water distribution
pipe, the horizontal flow
biological filter is connected with a vertical flow biological filter through a filter screen-water distribution
pipe, the vertical flow biological filter is connected with a first-level artificial
wetland via a perforated
water collection pipe which is horizontally arranged, the first-level artificial
wetland is connected with a second-level artificial wetland through an overflow weir, the second-level artificial wetland is connected with the
stabilization pond through a straight flow water drain pipe, and a main water drain pipe is arranged at the
tail end of the
stabilization pond. According to the method,
energy consumption is not required, the operation and the maintenance are simple and convenient, and the method further has the advantages of landscape effect,
economic benefits, simple structure and low investment; high-efficient purification of rural distributed domestic and farming
sewage is realized, and the removal rate of
nitrogen,
phosphorus, COD and the like in sewage is above 80%
after treatment.