The invention discloses a method for
cutting low-
pollution water load of a venous riverway and belongs to the field of
water treatment. The method comprises the following steps: (1) constructing the venous riverway by utilizing a waste riverway or a bottomland near-natural type riverway, (2) arranging an ecological
floating island and a shoreside restoration belt in the upper
stream of the venous riverway according to the direction of current, (3) arranging an ecological water permeable dike between the upper
stream and the
midstream of the venous riverway, (4) arranging a submerged type ecological
bed and a biological contact oxidation
bed in the
midstream of the venous riverway, (5) arranging an ecological water permeable dike between the
midstream and the lower
stream of the venous riverway, and (6) arranging an ecological
floating island and a shoreside restoration belt in the lower stream of the venous riverway. Through the application of the method, the removing rates of COD,
ammonia nitrogen,
total nitrogen and SS can reach over 60 percent respectively so as to make the venous riverway achieve good ecological effect and landscape effect finally. The method realizes the integration of functionality,
ecology and landscape of the riverway, achieves the treating effect of
clean water, green
bank and beautiful scene, and provides guarantee for
water quality of a
river network area.