Controllable subsurface artificial wetland sewage treatment system with inflowing at two ends periodically and alternately and treatment technology thereof

Abstract

The invention discloses a controllable subsurface artificial wetland sewage treatment system with inflowing at the two ends periodically and alternately and a treatment technology thereof. The system comprises a wetland inlet water distribution area, a wetland body part and a wetland outlet water collection area, wherein the water distribution area and the water collection area are positioned at the two ends of the whole system and form a symmetrical structure; the wetland body part is positioned between the wetland inlet water distribution area and the wetland outlet water collection area. Water inlet pipes are embedded in the upper parts of the walls on the side surfaces of the wetland inlet water distribution area and the wetland outlet water collection area, and more than two lines of water out pipes which are parallel with one another are embedded in the walls below the water inlet pipes. The wetland body part comprises a wetland matrix padding positioned at the bottom of the body part and economic plants planted on the wetland matrix padding. The sewage treatment system improves the growth conditions with obvious difference caused by uneven concentrations of nutrients of the plants at the front end and the rear end of a wetland in the traditional wetland system by periodically changing wetland water inlet points, and obtains good economic benefit while realizing the recycling of nitrogen and phosphorus in sewage.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a controllable periodical sewage treatment system and a treatment process for an artificial wetland sewage treatment system with alternating water inflow at both ends. Background technique [0002] Constructed wetland sewage treatment system is a sewage treatment technology developed on the basis of natural or semi-natural purification systems. This treatment technology is a simulation of natural wetlands. It utilizes the triple synergy of physics, chemistry and biology in natural ecosystems. Realize the purification of sewage. The wetland system is composed of plants, animals and microorganisms to form a unique ecological environment. Through filtration, adsorption, precipitation, ion exchange, plant absorption and microbial decomposition, etc., the efficient purification and treatment of sewage can be realized. Constructed wetland sewage treatment technology has a g...

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Problems solved by technology

[0003] The purpose of the present invention is to address the disadvantages of existing artificial wetland plant nutrition imbalances that lead to different growth, and propose a controllable periodic two-terminal alternating water inlet subsurface flow artificial wetland sewage treatment system and its treatment process

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