Water purifying system for artificial wetland

Abstract

The invention discloses a water purifying system for an artificial wetland. The water purifying system comprises a collection and pretreatment system, a water distribution and collection system, a plant tank and a precipitation system; when the sewage sequentially passes through the step type plant tank under the gravity function, the pollution matters and nutrients are absorbed or desorbed by a plant system, and then the water is purified; a gravel filtering material of different gradation is arranged under a net-shaped separating film, the special soil is put at the upper part of the net-shaped separating film, and the net-shaped separating film is a biological carrier which is prepared according to a certain material proportional ratio, so that the net-shaped separating film is suitablefor the growth of wetland plants and has certain porosity, and the organic matters in the sewage are absorbed in the special soil, collected, and degraded under the action of microorganisms in the soil; nitrogen, phosphor, potassium and other nutrients required by plant growth are absorbed and utilized by the roots of the wetland plant, and the sewage entering the wetland system is effectively purified under the functions of adsorption and degrading by the soil and the microorganisms in the soil, and the functions of percolation by filler and adsorption by plants.

Description

technical field [0001] The invention relates to the technical field of water purification systems, in particular to an artificial wetland water purification system. Background technique [0002] The usual sewage treatment methods have high technical requirements, complex management, high operating costs and energy consumption, while the constructed wetland system has the advantages of low construction cost, low operation and management costs, low energy consumption, and simple operation. The constructed wetland system can treat the waste water. Polluted surface water or municipal sewage, after treatment, the effluent water quality can reach the surface water quality standard, and can be used in lakes, reservoirs or rivers for drinking water sources or landscape water, so it is especially suitable for treating drinking water sources or near landscape water areas sewage, or to provide clean water replenishment to these bodies of water. [0003] However, the water purification...

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Problems solved by technology

[0004] The present invention provides a water quality purification system for artificial wetlands, which can effectively solve the problem in the above background technology that there is no plant pool with a series of level differences from high to low, and there is no special filler in the pool, and specific wetland plants are planted on the filler. The sewage passes through the stepped plant pool in turn under the action of gravity. The pollutants and nutrients are not easily absorbed or decomposed by the plant system, so that the water quality is purified. At the same time, it is not easy to be absorbed and utilized by the roots of wetland plants as nutrients required for plant growth by nitrogen, phosphorus, and potassium in sewage, and through the adsorption and degradation of soil and microorganisms in the soil, as well as the infiltration of fillers and plant Absorption, ultimately unable to effectively purify the sewage entering the wetland system

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