Three-dimensional ecological floating bed used for urban black and odorous riverway water quality improving and water purifying

Abstract

The invention discloses a three-dimensional ecological floating bed used for urban black and odorous riverway water quality improving and water purifying. The ecological floating bed structurally comprises a floating bed structure body, biological stuffing and biolith. The structure forming method includes the step that the three-dimensional ecological floating bed is formed in a river or lake which flows slowly or is still through simple assembly. The ecological floating bed is mainly used for removing N and P nutritive salt in an urban black and odorous riverway and other organic pollution loads in water, improving the water transparency and increasing dissolved oxygen. The three-dimensional ecological floating bed has the advantages that the concept of the aquatic plant-biological stuffing microorganism-biolith combined ecological floating bed is provided for the first time by a water quality improving and water purifying method of the three-dimensional efficient ecological floating bed, and ecological floating bed plants, biological stuffing contact oxidation and biolith microorganisms have a successive relation for treating a water body and effectively complete functional complementation; particularly in winter or other kinds of low-temperature weather, the biological stuffing and the biolith can effectively compensate vacancy of the aquatic plants in a withered state to continuously and efficiently purify the urban black and odorous water body heavily polluted and recover and reconstruct water ecology and water functions.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a three-dimensional ecological floating bed which integrates aquatic plants, biological filler contact oxidation and biolith microorganisms, and is used for intensified purification of urban black and odorous river water. Background technique [0002] At present, most urban rivers in our country have evolved into black and smelly rivers. In many cities in our country, the organic pollution of rivers is ubiquitous and increasingly prominent. Urban sewage is directly discharged into rivers, and the rivers flowing through towns are seriously polluted. environmental issue. On April 16, 2015, the State Council officially issued the "Water Pollution Prevention and Control Action Plan" (referred to as "Water Ten Measures"), which clearly proposed to remediate urban water bodies, requiring that by 2020, the black and odorous water bodies in the built-up area...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing ecological floating bed aquatic plants need relatively clean water quality conditions, especially high requirements for dissolved oxygen (DO), while the DO content in general urban black and odorous river water is extremely low, which will inhibit the growth of aquatic plants and even Cause the root system of aquatic plants to rot and die in large areas;

[0006] 2. The traditional ecological floating bed mainly relies on plant absorption and metabolism to remove nutrients such as N and P in polluted water. The microorganisms attached to the rhizosphere have limited biodegradation and denitrification capabilities due to their small biomass, especially for The purification effect of urban black and odorous water bodies with high organic matter and high ammonia nitrogen is not obvious;

[0007] 3. In addition, the main body of the existing ecological floating bed for water purification is aquatic plants, and in winter or extreme weather, aquatic plants are slow and may wither, resulting in a decline in the water purification ability of the ecological floating bed, which cannot meet the requirements of water body ecology and environmental protection. Environmental Functional Requirements

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