Matrix filler and method for reinforcing constructed wetland dephosphorization by utilizing wetland plant thalia dealbata

Abstract

The invention discloses a matrix filler and method for reinforcing constructed wetland dephosphorization by wetland plant thalia dealbata, which comprises the following steps: 1) cutting the overground part of wetland plant thalia dealbata, treating the overground part into powder, putting into an anaerobic high-temperature muffle furnace, and carrying out carbonization treatment at 200-400 DEG Cfor 6 hours; 2) putting the carbonized thalia dealbata powder into a ferrous sulfate solution according to a solid-to-liquid ratio of 1: 10, performing soaking for 2 hours, performing cleaning to be neutral by using deionized water, and performing drying to obtain a wetland substrate additive; 3) adding the wetland substrate additive prepared in the step 2) into the wetland substrate surface soilaccording to the mass fraction of 5%, and uniformly performing mixing. According to the matrix filler and the method for enhancing the phosphorus removal of the constructed wetland by utilizing the wetland plant thalia dealbata, the phosphorus removal capability of the constructed wetland can be effectively improved, the reuse efficiency of the wetland plant after harvesting is improved, the wetland operation cost is saved, the secondary pollution of the plant is reduced, and the wetland operation effect is improved; and the method has the characteristics of simple process, low cost, environmental protection and high efficiency.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a matrix filler and a method for strengthening phosphorus removal in artificial wetlands by utilizing the wetland plant Zailihua. Background technique [0002] At present, my country's water pollution is serious, especially the problem of eutrophication caused by high-phosphorus sewage such as rural domestic sewage, excessive application of agricultural chemical fertilizers, and livestock and poultry breeding wastewater is very prominent. Constructed wetland technology can be widely used in rural areas for the treatment of domestic sewage in villages and towns due to its good decontamination effect, low construction and operation costs, simple operation and management, and good landscape effects. [0003] The artificial wetland treatment technology of planting plants is a new technology for removing phosphorus in sewage. The main structural units of constructed wetlands include wa...

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Problems solved by technology

[0005] The technical problems to be solved by the present invention are limited phosphorus removal ability, secondary pollution caused by plants re-releasing phosphorus into wetlands, and low utilization rate of plant resources. The purpose is to provide a method for using wetland plants to strengthen artificial wetland phosphorus removal It can effectively improve the phosphorus removal capacity of artificial wetlands, and at the same time improve the utilization efficiency of wetland plants after harvesting, save wetland operating costs, and reduce secondary pollution of plants to improve wetland operation effects. It has the characteristics of simple process, low cost, environmental protection and high efficiency.

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