Distributed courtyard ecological sewage and wastewater treatment system

The invention belongs to the technical field of sewage treatment, and particularly relates to a distributed courtyard ecological sewage and wastewater treatment system which comprises a water inlet pipe, a multi-grid anaerobic treatment area, a plant soil filtering area, a water storage clean water tank and a solar heat preservation greenhouse. The plant soil filter area can better adapt to the situation that the amount of sewage changes greatly, plants in the plant soil filter area can directly absorb nitrogen, phosphorus and the like in the sewage to serve as nutrient elements, heavy metal such as lead, cadmium, arsenic, chromium and the like can be accumulated in the bodies of the plants, sewage treatment is achieved in an auxiliary mode, and the sewage treatment efficiency is improved. Soil animals, soil microorganisms and plant root systems inhabiting in soil below the earth surface and physical and chemical characteristics of the soil are fully utilized to purify the sewage, and the sewage treatment sys