Water quality improvements in the Trent catchment (UK): a view of their relationship to management and legislative changes

1994 ◽  
Vol 30 (5) ◽  
pp. 167-176 ◽  
Author(s):  
J. R. Martin

This paper outlines the improvements in water quality which have occurred in the River Trent catchment since about 1960 and the strategies by which they have been achieved. During this period there have also been several major changes in the structure of water quality management, in pollution control legislation and in the use of river and effluent quality standards. The links between quality trends, legislation, management structures and investment in sewerage and sewage treatment are considered. Prospects for the future under the current management regime are discussed.

1984 ◽  
Vol 16 (1-2) ◽  
pp. 243-252 ◽  
Author(s):  
J W van Sluis ◽  
L Lijklema

As a result of the construction of a barrage in the estuary of the Nakdong river the size of the estuary will be considerably reduced. In addition, a large river reservoir is created upstream of the barrage. Main points of interest are the effects of the discharge of raw sewage and treated effluent into the Nakdong river on the water quality in the projected reservoir and the water quality forecasts for the remaining part of the estuary, in relation with the existing plans for sewerage and sewage treatment for the city of Busan. In addition, measures to reduce the effects of the barrage and the outline of a water quality management programme are presented. Special consideration is given to the methodological aspects of the water quality study, i.e. the selection and use of mathematical models in a situation where input data are rather uncertain and only very few data for parameter estimation and model verification are available.


1994 ◽  
Vol 30 (5) ◽  
pp. 261-268 ◽  
Author(s):  
Selmin Burak ◽  
I. Ethem Gönenç ◽  
Arzu Erol

This paper examines the administrative and legal structure of the wastewater sector in Turkey, identifying its shortcomings and their causes, and suggests solutions. The study begins by outlining the existing administrative and legal structure, then focusing on the areas where difficulties are faced and seeking solutions to them. Those administrative and legal facets which have produced improvements and/or function effectively have been analysed so as to provide examples for other areas. When examining the sector it was observed that problems common to every area are the failure to adequately define powers and responsibilities, the lack of coordination between sectoral organisations, and the fact that attention is generally concentrated on routine matters of secondary importance. The fact that numerous organisations share powers in the same area causes confusion. Plurality also creates difficulties where enforcement is concerned. The existence of more than one set of regulations relating to the same area gives rise to loopholes. At the same time, unrealistic, and hence unenforceable standards undermine the effectiveness of sanctions. It has been concluded that a single organisation should be invested with the legal powers to lay down the principles of water management, that environmental courts should be set up to enforce legislation by means of sanctions; and that for this purpose existing legislation should be reexamined and revised as necessary and/or brought up to date.


1970 ◽  
Vol 5 ◽  
pp. 31-34 ◽  
Author(s):  
Ajay D. Chavan ◽  
M P Sharma ◽  
Renu Bhargava

The Godavari River is a second largest river in India originating from Trimbakeswar, Nasik, Maharashtra, India. It fl ows through the states of Madhya Pradesh, Karnataka, Orissa and Andhra Pradesh. The river, passing through Nasik City, is 82% polluted by domestic pollution and 18% by industries. The study covers about 65 km of the river starting from Kushawart Trimbakeswar to Saikheda Village, from where it enters the city. Ten locations were selected for collection of water samples from the river and the samples were analyzed for water quality parameters in the Environmental Laboratory of the Maharashtra Pollution Control Board (MPCB), Nasik. These data as well as data from the Central Pollution Control Board (CPCB) were used to compute the National Sanitation Foundation Water Quality Index (NSFWQI), mostly applicable in the USA and India. The results of NSFWQI of Godavari River indicates its water quality as ‘bad' (26-50) or ‘medium' (51-70) over the study stretch. The NSFWQI of December 2007 and February 2008 indicate an improvement in water quality at all locations over earlier data from 2002-07. Based upon the results, the existing conservation measures have been reviewed and additional measures are suggested. The study concludes that major stressor is sewage pollution.Key words: Water quality parameters; Water quality assessment; Water quality management; Conservation measuresDOI: 10.3126/hn.v5i0.2483Hydro Nepal Vol. 5, July 2009 Page:31-34 


2012 ◽  
Vol 260-261 ◽  
pp. 659-662
Author(s):  
Jun Pan ◽  
Hong Xue Li ◽  
Chang Hong Li

Through to analysis the influence of the effluent from the sewage treatment plant to the river water quality of Fangshen-Habaqi stream segment in lower reaches comprehensively, in order to achieve water pollution control and water function zone protection. This paper use QUAL2K model to simulate the influence to lower reaches water quality, and the simulation factor is BOD. The result showed that the downstream BOD concentration cannot reach the water quality standards Ⅲ. This paper provides some corresponding control measures, so as to provide the scientific basis of the water pollution control planning research.


1994 ◽  
Vol 30 (5) ◽  
pp. 15-24
Author(s):  
Janusz Kindler

The countries of Central and Eastern Europe (CEE) continue their efforts to address environmental problems, including water quality management, in the context of a transition from the centrally planned to market economies. Their economic recovery and further development is the most pressing and central goal since water quality deterioration is nothing but one of the many consequences of the lack of economic progress. Since international assistance to the CEE countries is limited, an early action should be taken to support the establishment of national financial mechanisms and incentives. To improve water quality, the efficiency of water, energy and material use must be increased in the CEE countries; reducing water use is an imperative. Industrial wastewater management strategy shall distinguish between the old and new enterprises. The non-point pollution sources of agricultural character should largely be controlled by preventive measures, applied jointly by land, water and agricultural specialists and managers. Transformation of industry and agriculture and water quality improvements must be undertaken together.


1995 ◽  
Vol 31 (8) ◽  
pp. 249-259 ◽  
Author(s):  
László Somlyódy

Water (and its deteriorating quality) may be the most severe stress on the exponentially growing human population in the next century. Problems are becoming increasingly complex and diverse and require more and more specific knowledge, and efficient integration across various disciplines, sectors, countries, and societies. The major challenge addressed is whether we are prepared to realize the desired integration and to resolve the large amount of existing gaps and barriers. The paper analyzes major past and desired future trends in water quality management. A number of issues are selected such as the identification, occurrence, and perception of various problems (e.g. eutrophication, acidification, global warming), pollution control types, wastewater treatment, modeling and monitoring, planning and environmental impact assessment, legislation and institutions, the notion of sustainable development, and the role of science and engineering. The past two decades showed tremendous developments in water quality management. In spite of these, the focus of the present discussion lies mostly on pitfalls to disseminate lessons and questions which are crucial to likely future problems and desired improvements.


Delhi, the most populated city in the country, is the capital of India. The huge population, urbanization and industrial processes contribute to degradation of water quality which is further aggravated by direct disposal of untreated domestic wastewater into the river Yamuna. In Delhi, the sewerage system is badly affected by improper management of the drainage system and insufficient installation of sewers in undeveloped as well as slum areas of the city which degrade the surface water quality of Yamuna River and create unhygienic conditions for the increasing population. In this study, three sewage treatment plants (STPs) have been selected which are situated at Najafgarh, Delhi Gate and Shahdara based on different technologies like Extended Aeration (EA), Biological Filtration and Oxygenated Reactor (BIOFOR) and Phytorid in order to assess the quality of wastewater before and after treatment and determining the removal efficiencies of various parameters. The study reveals that the performance of Delhi Gate and Shahdara STPs based on BIOFOR and Phytorid technologies are more efficient for the treatment of the municipal wastewater which can be further be safely disposed off into surface water and can be used for non-domestic purposes like irrigation, agriculture, cleaning of parks and streets. The effluent quality of Najafgarh STP based on EA technology is found to be less efficient as compared to the BIOFOR and Phytorid technologies. Hence, it is required to be operated and maintained properly with close supervision so as to achieve effluent quality standards as prescribed by the Indian standards


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