Ecological infiltration treatment method

Abstract

The invention discloses an ecological infiltration treatment method. The method comprises the following steps of: A, setting a primary infiltration device at the inlet of a lake to be treated, wherein the primary infiltration device comprises a bamboo net cage, matrixes are filled in the bamboo net cage, and a water-permeable fabric is coated outside the bamboo net cage; B, placing a first infiltration island in the lake to be treated: filling a second matrix layer from lake bottom to water surface, and sequentially setting a first gravel layer, a first coal cinder layer, a first water-permeable fabric layer, a first matrix layer, a first soil layer and a first sand layer on the second matrix layer; and C, placing a second infiltration island in the lake to be treated: filling a fourth matrix layer from the lake bottom to the water surface, and sequentially setting a second gravel layer, a second coal cinder layer, a second water-permeable fabric layer, a second substrate layer, a second soil layer and a second sand layer on the fourth matrix layer. According to the method, the water pollution purification efficiency is improved, and ecological recovery to industrial wastewater, domestic sewage and river water can be performed effectively.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an ecological percolation treatment method, which is suitable for purification of domestic sewage and industrial waste water or treatment of eutrophic lakes and river water bodies. Background technique [0002] Due to population growth and the rapid development of social economy, my country's per capita water demand and total water demand are increasing, and the total urban sewage discharge is also increasing year by year. In 2004, my country's sewage discharge amounted to 482.4×10 8 m 3 , of which the discharge of industrial wastewater is 221.1×10 8 m 3 , the discharge of domestic sewage is 261.3×10 8 m 3 , the focus of my country's water pollution control has gradually shifted from industrial point source-based control to urban domestic sewage-based control. It is estimated that by 2010, the total discharge of urban domestic sewage in my country will...

AI Technical Summary

Problems solved by technology

[0004] 1. High infrastructure investment and operating costs

[0005] 2. The operation is complicated and difficult to manage

[0006] 3. A large amount of sludge is produced, causing potential harm to the environment again

[0007] 4. The traditional secondary biological treatment method of sewage can effectively remove SS and COD, etc., but the removal rate of nutrients such as nitrogen and phosphorus is low (30%-50%), and the treated effluent will be discharged into natural water bodies. Cause environmental problems such as "eutrophication"

[0008] Therefore, in terms of improving the ecological environment, the secondary treatment of urban sewage can only reduce pollution, but cannot completely eliminate pollution, nor can it fully recycle sewage