Organic composite soil high-efficiency ecological water purification system

Abstract

An organic composite soil high-efficiency ecological water purification system comprises a wall body and a filter bed in the wall body, wherein a surface water distribution pipe is arranged above the wall body, a water outlet is formed below the wall body, the filter bed is sequentially divided into a plant growth area, a primary sand filter layer, a rapid infiltration layer, a water storage layer, a slow infiltration layer and a water outlet layer from top to bottom. The purification process adopts the dry-wet alternative way, and comprises four cycles including a water inlet rapid infiltration period, a water storage slow infiltration period, a slow infiltration deep purification period, and an empty recovery period which cycle. The organic composite soil high-efficiency ecological water purification system has the characteristics of small occupied area, high impact-resisting load, stable water outlet, short construction period, low cost, low capital construction investment, convenient maintenance and management, low operation cost and low secondary pollution (very small sludge production) and good ecological landscape benefits. The water purification system is suitable for large-area popularization in the domestic sewage treatment in rural areas and suburb areas, and is also suitable for organic pollution remediation and pollution control of water bodies such as small rivers and lakes.

Description

technical field [0001] The invention belongs to the technical field of purification treatment of low-concentration organic sewage, in particular to an organic composite soil high-efficiency ecological water purification system suitable for sewage treatment in rural and suburban areas. Background technique [0002] At present, water pollution in rural and suburban areas is relatively serious, but due to lagging planning, its sewage treatment is still in its infancy, and there are many difficulties and problems. The reasons are: first, the serious lack of construction funds; Actual sewage treatment technology in rural areas of my country. In addition to the conventional traditional activated sludge process in village and town sewage treatment, more technologies are applied including artificial wetland (including surface flow, vertical flow and subsurface flow), rapid infiltration treatment system, underground infiltration treatment system, purification tank technology, biogas d...

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Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a new treatment process with strong applicability to rural sewage and general low-concentration organic sewage treatment technology, which can overcome the large area occupied by artificial wetland, traditional soil treatment process and oxidation pond process. , low economic benefits, difficult maintenance, poor impact load resistance, easy to block, etc.

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