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Method for technical evaluation on nutrient standards of lakes

A nutrient and lake technology, applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of less research on main control factors, lack of scientific basis for revision, and not included in the formulation and management of water quality standards.

Inactive Publication Date: 2012-07-25
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

At present, the economic analysis of my country's water quality standards has not been included in the formulation and management of water quality standards.
In addition, the revision of the standard lacks scientific basis, and there are few studies on the main control factors in the system

Method used

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  • Method for technical evaluation on nutrient standards of lakes
  • Method for technical evaluation on nutrient standards of lakes
  • Method for technical evaluation on nutrient standards of lakes

Examples

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Embodiment 1

[0137] Taking the Fuxian Lake Basin as an example, Fuxian Lake is located in Yuxi City, Yunnan Province, with a drainage area of ​​674.69km2 (excluding the Xingyun Lake Basin). Fuxian Lake is the second deepest lake in my country. When the lake surface elevation is 1722.5m, the water area is about 216.6km2, the average water depth is 95.2m, and the corresponding water capacity is about 20.62 billion m3, ranking second in the country. Taking 2008 as the base year, according to the "Yuxi Statistical Yearbook (2008)" [18], the recommended value of eutrophication control standard in Fuxian Lake determined according to relevant researches is that TN is not more than 0.173mg / l, and TP is not more than 0.006mg / l. l After calculation, when the elevation water level of Fuxian Lake is 1 722.5m, the results of the estimated reduction amount in 2012 are shown in Table 1.

[0138] As the current water quality of Fuxian Lake can basically meet the national surface water Class I standard, an...

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Abstract

A method for technical evaluation on nutrient standards of lakes includes the following steps: 1) computing the maximal permissible pollutant quantity of the nutrients in the lakes according to the nutrient standards and functions of the lakes; 2) analyzing conditions of various pollution sources in lake basins systematically and quantity of the pollution sources entering the lakes, and building an optimized model and computing reduced cost for achieving the nutrient standards of the lakes on the condition that the lakes are under the limit of water environmental capacity; 3) evaluating primarily: controlling the proportion of the cost accounting in the gross national product by means of lake eutrophication, measuring affection on development of the local national economy from cost control by eutrophication and judging whether the eutrophication control achieves the preset control effect or not; and 4) secondarily evaluating the control standards failed in the primary evaluation. The method computes environmental capacity of the lakes and standard nutrient reduction by means of TMDL (total maximum daily load), controls the proportion of the cost accounting in the gross national product by means of lake eutrophication and measures affection on development of the local national economy from standard cost.

Description

technical field [0001] The invention relates to a lake nutrient standard formulation technology in the field of water environment protection. The technical and economic evaluation technology of the lake nutrient standard is a key technology in the process of standard formulation, and is mainly suitable for analyzing the technical and economic feasibility of the eutrophication control standard for lakes in my country. sex. Background technique [0002] Establishing effective water quality standards based on the functions of water bodies should not only consider the resource functions of water bodies, but also the characteristics and protection needs of water bodies, measure the economic capacity of the region, and the technical level that can be adopted, and establish the best accessible water bodies environmental protection goals. The analysis of economic factors in the process of formulating water quality standards is the prerequisite and necessary condition for formulating...

Claims

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Application Information

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IPC IPC(8): G06F19/10
Inventor 席北斗苏婧吕宁磬霍守亮纪丹凤
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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