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A method for in-situ bioenhanced purification of water bodies in rivers and lakes

A bio-augmentation, water body technology, applied in chemical instruments and methods, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high cost, limited planting space, difficult to maintain microorganisms, etc. Easy assembly, enhanced self-cleaning ability, and improved stability

Active Publication Date: 2017-06-06
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Among the currently used river and lake water quality control methods, the ecological control method using microorganisms and plants is considered to be a basic method suitable for river and lake control, but in practical applications, there are problems such as weak plant treatment capacity, limited planting space, and difficulty in putting in microorganisms. Disadvantages of maintenance; fixing traditional bio-immobilized fillers in rivers is limited by high cost, complicated construction, and affecting river navigation.

Method used

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  • A method for in-situ bioenhanced purification of water bodies in rivers and lakes
  • A method for in-situ bioenhanced purification of water bodies in rivers and lakes
  • A method for in-situ bioenhanced purification of water bodies in rivers and lakes

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Such as Figure 4 and 5 The in-situ bioenhanced purification method for rivers and lakes is shown. This method is based on the principle of biological contact oxidation. A cylindrical support with a three-dimensional structure is placed on the bottom of the water body. The rod-shaped structures on both sides of the support are wrapped with soft and easy-to-hang Membrane carrier, biofilm is formed on the carrier, and the biofilm absorbs and degrades pollutants in the river water during the process of river water entering and exiting the carrier, purifying the water quality of rivers and lakes.

[0035] The specific description is as follows: in the water area of ​​a slow-flow lake, its water quality index is five types of water quality, and the average water depth is 3m. By monitoring the content of dissolved oxygen in the lake water along the water depth, this embodiment does not use artificial aeration. In a certain area of ​​the lake, eight groups of biological suppo...

Embodiment 2

[0037] Such as Figure 6 and 7 The in-situ bioenhanced purification method for rivers and lakes shown is basically the same as in Example 1, except that the composition, shape and arrangement of the biological carriers are different.

[0038] In a certain area of ​​the lake, ten groups of biological supports with three-dimensional spatial structures were placed in parallel. The ring-shaped supports of the three-dimensional rigid framework 1 of the support are all the same as in Example 1, and then four ring-shaped supports are fixed on two long strip-shaped rigid frameworks of 0.5m*0.2m*0.2m to form a A round support with interstitial spaces. A total of 40g of carbon fiber 4 is wound on the upper part of the dendritic structure 2, and the total effective attachment area is about 900m 2 . The distance between the carriers of each group of three-dimensional space structures is 2m. The round support directly sinks to the bottom of the lake, without artificial installation of...

Embodiment 3

[0040] Such as Figure 8 and 9 The in-situ bioenhanced purification method for rivers and lakes shown is basically the same as in Example 1, except that the composition, shape and arrangement of the biological carriers are different.

[0041] In a certain area of ​​the lake, ten groups of biological supports with three-dimensional spatial structures were placed in parallel. The ring-shaped carrier of the three-dimensional rigid framework 1 of the carrier is the same as that of Example 1, and then 4 ring-shaped carriers are fixed on a strip-shaped rigid frame of 0.5m*0.2m*0.2m to form a Carrier of space. A total of 50g of polypropylene fiber 5 is wound on the upper part of the dendritic structure 2, and the total effective attachment area is about 1000m 2 . The distance between the carriers of each group of three-dimensional space structures is 2m. The carrier sinks directly to the bottom of the lake, without artificial installation of fixtures. After a month of water qua...

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Abstract

The invention relates to an in-situ biological strengthening purification method for river and lake water. A supporter with a stereostructure shape is disposed at the water body bottom, the supporter sinks to the water bottom and does not have object connection with other object for the purpose of position fixation; and water can go to the inside of the supporter, the supporter can adhere to a flexible carrier, the flexible carrier adapts to adhesion to organisms to form a biological supporter. Under the premise of not influencing river and lake scenery, shipping and other use functions, the flexible carriers on the inner side and outer side of the supporter can provide an enrichment place for original organisms of rivers and lakes, thus strengthening the self cleaning capacity of rivers and lakes. The dendritic structure with certain strength on the supporter improves the stability of the supporter, and when a lot of bottom mud exists, the dendritic structure can be inserted into the river bottom mud, and due to the gravity of the supporter itself, the supporter has no need for fixation, thus avoiding transformation of rivers and lakes, and saving cost. The stereostructure supporter is constructed by supporter processed into a rodlike structure, and the processing and assembly are simple.

Description

technical field [0001] The invention relates to a method for enhancing the self-purification ability of a water body by using a biological attachment carrier with a three-dimensional space structure placed on the bottom of rivers and lakes, and belongs to the field of ecological restoration of water pollution. In particular, it relates to a method for purifying river and lake water. Background technique [0002] At present, cities at home and abroad have increased the management of the purification of river water bodies, but after the effective treatment of point sources, the water discharged into rivers or lakes after reaching the discharge standard is evaporated and concentrated, and the inflow of small pollution sources is unavoidable. And the entry of pollution such as atmospheric dust will cause the pollution of rivers and lakes. Simply relying on the self-purification ability of rivers and lakes has failed to achieve the goal of maintaining good water quality. Theref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/00C02F3/34C02F3/32
Inventor 张书廷王晶晶李倩方金兴
Owner TIANJIN UNIV
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