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

A wetland plant and artificial wetland technology, applied in the field of water treatment, can solve the problems of low utilization rate of plant resources, secondary pollution, limited phosphorus removal capacity, etc., and achieve the goal of improving phosphorus removal capacity, saving operating costs, and improving reuse efficiency Effect

Inactive Publication Date: 2020-11-10
POWERCHINA CHENGDU ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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...

Method used

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

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Embodiment 1

[0020] The present invention uses the wetland plant Zailihua to strengthen the method for phosphorus removal in artificial wetlands, comprising the following steps: 1) cutting the aboveground part of the wetland plant Zailihua, processing it into powder, and placing it in an anaerobic high-temperature muffle furnace at 200°C 2) Soak the carbonized Zailihua powder in ferrous sulfate solution for 2 hours at a solid-to-liquid ratio of 1:10, wash with deionized water until neutral and dry to obtain a wetland matrix Additive; 3) Add the wetland matrix additive prepared in step 2) to the surface soil of the wetland matrix at a mass fraction of 5% and mix evenly.

Embodiment 2

[0022] The present invention uses the wetland plant Zailihua to strengthen the method for removing phosphorus in the constructed wetland. 1) Cut the above-ground part of the wetland plant Zailihua, process it into powder, place it in an anaerobic high-temperature muffle furnace, and carry out carbonization at 300 ° C for 6 hours Treatment; 2) Soak the carbonized Zailihua powder in a ferrous sulfate solution for 2 hours at a solid-to-liquid ratio of 1:10, wash it with deionized water until it is neutral, and dry it to obtain a wetland matrix additive; 3) The wetland matrix additive prepared in step 2) is added to the surface soil of the wetland matrix at a mass fraction of 5% and mixed uniformly.

Embodiment 3

[0024] The present invention uses the wetland plant Zailihua to strengthen the method for removing phosphorus in the constructed wetland. 1) Cut the above-ground part of the wetland plant Zailihua, process it into powder, place it in an anaerobic high-temperature muffle furnace, and carry out carbonization at 400 ° C for 6 hours Treatment; 2) Soak the carbonized Zailihua powder in a ferrous sulfate solution for 2 hours at a solid-to-liquid ratio of 1:10, wash it with deionized water until it is neutral, and dry it to obtain a wetland matrix additive; 3) The wetland matrix additive prepared in step 2) is added to the surface soil of the wetland matrix at a mass fraction of 5% and mixed uniformly.

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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...

Claims

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Application Information

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Owner POWERCHINA CHENGDU ENG
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