Situation Of Water Environment Research Articles

Analysis of the Coupling Relationship between Water Quality and Economic Development in Hongjiannao Basin, China

Hongjiannao is the largest inland lake in China’s deserts. In recent years, the water quality and area of the Hongjiannao Lake have continued to decline, which is closely associated with the economic development in the Hongjiannao basin. To explore the coupling relationship between the water quality and economic development in the Hongjiannao basin, the water quality and economic development index of the basin has been analyzed in terms of the monthly water quality and socio-economic development from 2013 to 2020. The coupling relationship and interaction mechanism between water quality and regional economic development has been studied by coupling coordination degree model. The results show that the water pollution increased and then decreased with the seasons, while the water quality was the worst in the summer. The coordinated degree between the water quality and economic development in Hongjiannao shows an upward trend from 2013 to 2020, which has transformed from the process of lagging economic development to the process of primary coordination, finally to the process of lagging water environment. The coupling relationship between water quality and economic development changed from a state of nearly un-coordination to primary coordination from 2013 to 2016, with economic development lagging behind. The coupling relationship between the two systems changed from barely coordinated to the primary coordinated from 2017 to 2018, with the rapid development of economy and slight decline in water quality. After 2018, those two systems gradually stepped into a virtuous cycle during 2019–2020, but the phenomenon of lagging water quality still existed. Therefore, in order to maintain the stable economic development of resource-based cities, it is necessary to keep improving the current situation of water environment and water shortage in Hongjiannao, which will promote the coordinated and sustainable development of water environment and economy.

Research on Water Environment Situation and Regulation Progress of Urban Lakes

Urban lake water environment management and water ecosystem restoration have always been research hotspots at home and abroad. However, there have always been different opinions on the water environment situation and water environment regulation of urban lakes at home and abroad. Based on the investigation of domestic and foreign water environment conditions, this study summarizes the research progress of different control measures of urban lakes and their respective advantages and disadvantages, and combines the research examples of domestic and foreign scholars to systematically analyze and organize the control of major urban lakes, with a view to provide a reference for the evaluation and restoration of urban lakes in the future.

Research on the progress of urban lake water environment assessment

Urban lake water environment management and water ecosystem restoration have always been research hotspots in China and abroad. However, there have always been different opinions on the water environment situation, water environment evaluation and subsequent water environment regulation of urban lakes worldwide. Based on the investigation of water environment in China and abroad, this research summarizes the main water quality evaluation methods of urban lakes, and systematically analyzes and organizes the main evaluation methods, in order to provide references for the future evaluation and restoration of urban lakes.

Study on the Improvement Path of Water Environment Quality -- A Case Study of Tianjin

In recent years, although the water environment quality of Tianjin has improved, there are still some problems such as poor water environment quality, shortage of water resources and weak water ecological function. Based on the analysis of the current situation of water environment in Tianjin, this study analyzes the existing problems and puts forward the implementation path matrix of water environment protection, which can reduce water environment pollution.

An integrated study on change detection and environment evaluation of surface water

Surface water pollution is one of the serious environment pollution problems, posing threat to human and other creatures. Extraction, change detection and environment evaluation of surface water are prerequisite for water resource management. Undoubtedly, remote sensing data play an important role in these researches because of its large geographic coverage and high temporal frequency. In this study, the Tianjin Binhai New Area was chosen as the study area and the surface water extraction method Modified Normalized Difference Water Index (MNDWI) was used by combining with adaptive dynamic threshold to extract surface water and detect its change. Comparing with single-band threshold, model of multi-band spectral relationship, Iterative Self-organizing Data Analysis Technique Algorithm and MNDWI, MNDWI-based adaptive dynamic threshold method performed better, which considered the influence of background. Analysis on dynamic change of water showed the area of lake and river had increased and the area of seawater had decreased. Meanwhile, the correlation analysis between area change of surface water and impact factors indicated both climatic and anthropogenic factors made positive contribution to the present water environment situation. Finally, an improved model of surface water environment evaluation was established to evaluate water quality by combining genetic algorithm (GA) and backpropagation (BP) neural network model. And the test results proved that the optimized GA-BP neural network is better than the single BP neural network. The environment evaluation indicated that water quality of the Haihe River section in the study area was poor. Therefore, water environment protection should be strengthened in this area. Some suggestions on practical management were given accordingly.

Urban polluted water treatment based on landscape ecological construction technology

Since the reform and opening up in the last century, many cities in China have entered the rapid stage of development, at the same time, the problem of urban water environment pollution has become increasingly prominent. Good water environment is the basic guarantee of the healthy and harmonious development of the city, therefore, people begin to invest a lot of energy on how to control the polluted water of the city reasonably and efficiently. In this paper, the present situation of water environment in most cities of our country is summarized, and the main technical measures and their advantages and disadvantages of urban polluted water treatment in the past are briefly analysed. And it further expounds on how to integrate landscape ecological construction technology into the treatment of urban polluted water in details in order to provide reference for the future urban water environment management.

Analysis of environmental carrying capacity of Beijing-Hangzhou grand canal basin in Zhejiang Province

The harnessing and protection of water environment is critical in the comprehensive treatment of the Beijing-Hangzhou grand canal. Zhejiang section of the canal is located in the Hangjiahu plain, and some parts of the canal are still difficult to reach the water quality requirement. Therefore, it is necessary to investigate and analysis the pollutant discharge and water environment capacity. This paper evaluates the current situation of water environment carrying capacity of grand canal in Zhejiang Province, and puts forward pollution control Strategies. Suggestions are also made based on existing problems.

宜兴百渎港桥断面污染源解析及水体达标研究

百渎港桥断面为国控断面，2018年水质考核目标为Ⅲ类，2015年十二个月水质监测结果显示，百渎港桥断面氨氮和总磷尚不能达标。对百渎港桥断面水环境现状进行调查，分析污染物入河量及其构成，诊断和识别主要水环境问题，通过水文水质模型构建及模拟计算，提出保障断面达标的污染物削减方案。 The section of Baidu-port bridge is state-controlled section, and the water quality assessment ob-jective for 2018 is class III. Water quality monitoring results of twelve months in 2015 showed that the water quality indexes of ammonia nitrogen and total phosphorus could not achieve standards. The present water environment situation of Baidu-port bridge section is investigated; the amount of pollution into river and its constitution are analyzed, and the main water environmental problems are diagnosed and identified. Through construction and simulation calculation of hydrology and water quality model, the pollutant reduction plan is put forward to ensure attaining standards of the section.

关于治理巢湖水污染的现状采取生态修复的物理方法

通过在安徽省巢湖市的调研，以水环境治理为切入点调研该地的水污染现状以及采取生态修复的物理方法，深入挖掘这个城市的水环境现状，并总结、提出自己的思考，从而探索“水生态文明城市”的建设情况。巢湖近期开展国开行项目，以疏浚底泥为主要方向。巢湖历史悠久、人杰地灵，有着得天独厚的水环境条件、漫长悠久的水文化历史。通过分析巢湖流域水污染现状及形成原因，借鉴目前国内外治理湖泊污染的经验方法，提出通过人工湿地、生态沟渠，人工清於等一系列的生态治理措施，从巢湖外源及内源方面综合来改善巢湖水环境。 Through the investigation in Chaohu city of Anhui Province, starting from water environment treatment, the local water pollution status has been researched. Physical methods of ecological restoration were adopted to deeply explore the city water environment situation. Then we summed up and put forward our own thinking, to explore the construction situation of “water ecological civilization city”. A project of CDB dredging has been launched recently in Chaohu city, with dredging sludge as the main direction. Chaohu has a long history, with outstanding people, which owns the advantaged water environment conditions and long water culture history. By analyzing the water pollution status and its causes in Chaohu basin, and drawing lessons from the experiences and methods for treating lake pollution at home and abroad, a series of ecological management measures have been proposed, such as constructed wetlands, ecological ditch, dredging by humans, etc., which can improve the water environment of Chaohu in exogenous and endogenous sources synthetically.

Pollution Situation of Water Environment and Characteristics of Dissolved Oxygen of Yang River

No.8 Bridge is the site where Yang River flows into Guanting Reservoir. It’s an important guarantee for the water safety of Guanting Reservoir that the water quality meets the standards steadily at No.8 Bridge. Based on the monitoring data from 2006 to 2013, the interannual and annual trends and correlations among DO, NH3-N and COD of Yang River were analyzed. The factors affecting DO were also discussed. The results showed that DO and COD met the fourth-class standard for surface water. NH3-N decreased year by year and its standard-reaching rate ran up to 70% since 2009. DO and COD, NH3-N was negatively correlated, but not significant, indicating that COD and NH3-N were not important factors affecting DO. DO varied along with seasons, autumn (mean 7.47mg /L) > spring (mean 7.35mg /L) > winter (mean 6.95mg /L) > summer (mean 6.35mg /L). Temperature is an important factor affecting DO. The possible impact on water environment of Guanting Reservoir caused by DO decrease should be paid special attention.

Analysis of Initial Rainwater Treatment Scheme in Small Area

With the increased attention on urban water environment, the treatment of initial rainwater is also being concentrated on. This article analyses the initial rainwater treatment in the city through the actual project and hopes to be able to make an effort for the improvement of urban water environment situation.

Evaluation of Ecological Civilization Construction of Water System

Water Environment Comprehensive Assessment System is a comprehensive system of water environment impact related to a variety of factors, including water and other natural attributes, and human social and economic activities and other social attributes of the water environment giant system merits of a scientific evaluation system, which for the water environment pollution prevention and scientific management decision-making basis. This paper presents the evaluation of water environment system engineering methods, the method takes into account the water environment facilities and managerial factors, etc., may reflect the situation of water environment of the objective entity.

Study on the Function of Waters in the Ecological City Construction and its Optimization Strategy

Analyzed the water environment situation of Chinese city, discussed the position and function of the water in the construction of ecological city, used methods of typical cases, revealed the severe problems of city water ecological environment, put forward the optimization strategy of water environment in the process of ecological city construction.

A Situation of Water Environment and Desertification in Xinjiang, China (Ⅱ)

A Situation of Water Environment and Desertification in Xinjiang, China (Ⅱ)

A Situation of Water Environment and Desertification in Xinjiang, China (Ⅰ)

A Situation of Water Environment and Desertification in Xinjiang, China (Ⅰ)