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River water quality evaluation method based on multiple parameter indexes

An evaluation method and multi-parameter technology, applied in the field of environmental science and monitoring, can solve problems such as high cost and harm, and achieve the effect of protecting the environment, reducing testing costs, and reducing pollutant emissions

Inactive Publication Date: 2017-10-24
NANJING INST OF GEOGRAPHY & LIMNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method requires the determination of a large number of water quality parameters, which is costly, and the large amount of chemical reagents used in the determination of water quality parameters is also harmful to the water environment

Method used

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  • River water quality evaluation method based on multiple parameter indexes
  • River water quality evaluation method based on multiple parameter indexes
  • River water quality evaluation method based on multiple parameter indexes

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Embodiment 1

[0030] The water quality evaluation of the Taihu Lake Basin using the present invention includes the following steps:

[0031] (1) Determination of ammonia nitrogen, permanganate index, nitrate, dissolved oxygen and turbidity concentrations in the rivers of the Taihu Lake Basin;

[0032] From 2014 to 2016, 4-season field sampling was carried out in 6 major water systems (Tiaoxi, Nanhe, Taoge, Yanjiang, Huangpu, Changjiang Estuary and Hangzhou Bay) in the Taihu Lake Basin (Table 1), involving 96 sampling points and 39 major rivers ( East Tiao River, West Tiao River, Changxing Port, Nan River, Wuxi River, Huaxi River, Nanxi River, Meng River, Chengdong Port, Danjin Licao River, Beijing-Hangzhou Grand Canal, Beijing-Hangzhou Ancient Canal, Biandan River, Wuyi Canal, Wujin Port, Mengjin River, Xingou River, Xibei Canal, Baiqu Port, Huguang River, Luzhi Port, Miaojing River, Wusong River, Huangpu River, Taipu River, Desheng River, Xicheng Canal, Zhangjiagang, Wang Yu River, Changh...

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Abstract

The invention discloses a river water quality evaluation method based on multiple parameter indexes. According to the method, river water quality is evaluated and graded on the basis of a WQI (water quality index) and with WQImin as an index. The fact that WQImin containing NH4-N, CODMn, NO3-N, DO (dissolved oxygen) and tur (turbidity) is in significant positive correlation with the WQI is discovered, so that WQImin containing NH4-N, CODMn, NO3-N, DO and tur can be adopted to constitute WQImin to replace the original WQI obtained by calculating numerous parameters required to be determined, and rapid evaluation and type classification of river water quality can be realized. The method is simple and easy to operate, low in cost and easy to popularize and has quite obvious advantages.

Description

technical field [0001] The invention relates to the field of environmental science and monitoring technology, and relates to a water quality evaluation method, in particular to the development of a method based on ammonia nitrogen (NH 4 -N), permanganate index (COD Mn ), nitrate (NO 3 -N), WQI composed of dissolved oxygen (DO) and turbidity (tur) min A method for rapid assessment of river water quality and classification of water quality. Background technique [0002] Due to natural processes, human activities, and increased utilization of water resources, water quality decline has become the most important environmental pollution problem faced by the world today, which has attracted widespread attention from scientists and management departments at home and abroad. It is worth noting that in the future, freshwater resources will become increasingly scarce, thus endangering human utilization of water resources, especially its drinking water function and its important role...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18
CPCG01N33/18
Inventor 吴召仕王昌辉王晓龙蔡永久张磊
Owner NANJING INST OF GEOGRAPHY & LIMNOLOGY
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