Entrophication control technique from the perspective of complex system of social economy-ecological environment

A socio-economic and eutrophic technology, applied in the field of water pollution control, can solve the problems of fuzzy feedback relationship and process, poor eutrophication control effect, etc., and achieve the effect of regulating eutrophication problems.

Inactive Publication Date: 2015-09-23
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

[0003] The feedback relationship and process between the growth state of vegetation in the existing ecosystem and the eutrophication state of the water body are still relatively vague, and water quality cannot be regulated from the source of eutrophication, which is socio-economic water use, resulting in eutrophication. In order to solve the problem of poor eutrophication control effect, the present invention provides a eutrophication control technology based on the response of vegetation coverage to water quality from the perspective of socio-economic-ecological environment composite system. Combined with the response relationship of wat

Method used

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  • Entrophication control technique from the perspective of complex system of social economy-ecological environment
  • Entrophication control technique from the perspective of complex system of social economy-ecological environment
  • Entrophication control technique from the perspective of complex system of social economy-ecological environment

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Embodiment approach

[0011] 1. Collect the corresponding data of vegetation cover index (NDVI) and water body eutrophication index (TN concentration and TP concentration) of a lake, and establish the response relationship between vegetation coverage and water body eutrophication process. After exploring the relationship between vegetation coverage conditions in different growth periods and TN and TP concentrations, it was found that only the vegetation coverage index in the vegetation growth period had a clear relationship with TN concentration or TP concentration alone, and with eutrophication status (TN and TP concentrations). response relationship.

[0012] 2. Analyze the main source of water eutrophication, the main influencing factors of the source and the main influencing process of the factors. According to the analysis in the specific step 2 in the summary of the invention, the logic diagram of the main feedback process of the lake is established, as figure 1 shown. Use the water quantit...

Embodiment

[0039] Due to the high concentration of TN and TP in the lake, the problem of eutrophication is prominent. Through this technical method, from the three aspects of industry, agriculture and residents' life, water demand, sewage discharge and reuse water are considered, and the ecological water consumption is combined. Factors, established a system dynamics model that can reveal the feedback mechanism between vegetation coverage and eutrophication, and clarified that the key regulatory factors and key processes of the eutrophication process are the wastewater discharge process in agriculture. In the proposed corresponding water eutrophication Under the proposed scheme, the results of TN and TP concentrations in the regulation area of ​​the lake are shown in the table below:

[0040] Concentration before regulation (mg / L) Concentration after regulation (mg / L) TN 3.05 1.98 TP 0.51 0.27

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Abstract

The present invention discloses an entrophication control technique from the perspective of a complex system of social economy-ecological environment. Firstly, a vegetation cover index is used as an indicator representing the vegetation state, a relationship between the vegetation cover and the eutrophication process of water body is established, and then on the basis the systematic dynamics process which discloses that water for social and economical uses affects the eutrophication of water body, the systematic dynamic process is combined with the impact caused by the vegetation cover to the eutrophication. Finally, a systematic dynamics model capable of reflecting the feedback mechanism between the vegetation cover and the eutrophication in a complex system of social economy-ecological environment, to regulate the eutrophication. This technique not only reflects whether the quantity of N and P generated by the socially and economically used water is suitable from the perspective of the complex system of social economy-ecological environment, but also embodies the dynamic feedback process between the vegetation coverage and the eutrophication of the water body. in this way, critical regulation factors are pointed out, the corresponding critical dynamical process is simulated, a dedicated regulation scheme for regulating the eutrophication with respect to the structure of the socially and economically used water is provided, which gives effective guidance to regulation of the source of the eutrophication of water body.

Description

[technical field] [0001] The invention belongs to the field of water pollution control, and in particular relates to a eutrophication control technology from the perspective of a social economy-ecological environment composite system. [Background technique] [0002] Effective control of water eutrophication is a basic task of water pollution control and an important requirement of water environment protection. As an important carrier of nutrient elements and water transport, vegetation plays an important role in the regulation of nutrient levels in lakes and other water bodies, and is often used as an important measure for ecological restoration of water environments. However, in the past lake eutrophication control technologies, there are two main deficiencies: 1) Water eutrophication is mostly regulated from the perspective of lake terminal treatment, while terminal treatment technologies for eutrophic water bodies, due to the feedback relationship involved Complex, the f...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 朱洁王烜杨志峰崔冠楠郝光玲
Owner BEIJING NORMAL UNIVERSITY
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