Biological filter bed for purifying self-flowing embedded modular river water body and purification method

Abstract

The invention discloses a biological filter bed for purifying a self-flowing embedded modular river water body and a purification method, and belongs to the field of river water body treatment. The biological filter bed comprises a riverbed, broken stone hardcore layers are arranged on two sides of the bottom of an inner cavity of the riverbed, and a biological filter bed treatment module is arranged on the tops of the broken stone hardcore layers. The efficient aeration biological filter bed technology is applied to river water quality purification, the double functions of physical filtration and biological purification are achieved on river incoming water, the purification efficiency is high, and the water outlet effect is good; standardized module design is adopted, multiple modules can be flexibly combined for use according to needs, mounting and dismounting are convenient, and river channel flood discharge safety is not affected; the treatment device is arranged in the river channel, so that the problems of land acquisition and land use indexes do not exist; a riverway in-situ enhanced purification process is adopted, water inlet and water outlet do not need to be improved, and the operation cost is reduced while the purification efficiency is improved; large-scale civil construction is not needed, only simple prefabricated module assembling is needed, construction is easy and convenient, and the construction cost is low.

Description

technical field [0001] The invention relates to the field of river water treatment, in particular to a self-flowing embedded modular river water purification biological filter bed and a purification method. Background technique [0002] The treatment of urban black and odorous water bodies and cross-section compliance are major scientific research problems for environmental protection workers. How to efficiently solve river pollution and provide residents with a place of leisure with clear water and fish is also a major political task for urban decision-makers. Currently, river treatment generally adopts Interception and source pollution control (point source pollution, non-point source pollution), dredging, aeration and ecological management (such as wetlands, floating beds, etc.) Ecological measures often have low purification efficiency, making it difficult to achieve and maintain river water quality targets. [0003] Ecological base or submerged biological carrier is a ...

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Problems solved by technology

[0002] The treatment of urban black and odorous water bodies and cross-section compliance are major scientific research problems for environmental protection workers. How to efficiently solve river pollution and provide residents with a place of leisure with clear water and fish is also a major political task for urban decision-makers. Currently, river treatment generally adopts Interception and source pollution control (point source pollution, non-point source pollution), dredging, aeration and ecological management (such as wetlands, floating beds, etc.) Ecological measures often have low purification efficiency, making it difficult to achieve and maintain river water quality targets

[0003] Ecological base or submerged biological carrier is a carrier of immobilized microorganism technology. Immobilized microorganism technology is a biotechnology that immobilizes microorganisms on the carrier to make them highly dense and maintain their biological activity. The principle is biofilm One of the main process forms of the method is to gather and reproduce a certain amount of microbial communities on the carrier, remove the pollutants in the sewage through the metabolism of microorganisms, and at the same time play a certain role in intercepting the pollutants. The organic matter, ammonia nitrogen, suspended particles and other substances in the system have good removal effect. This method has low investment, low energy consumption and operation cost, simple operation and easy maintenance, but there is a problem of low purification efficiency. Bypass measures are adopted. Sewage treatment facilities are built above or below the river bank to purify the water body of the river and return it to the river, which also has the effects of high project cost, limited land space and land use properties, etc.

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