Waste Management

Advances in Water Treatment and Environmental Management by G. Thomas

By G. Thomas

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What is the priority action to be taken ? With a view to protecting the quality of drinking water, regulations have ben drawn up for the protection of groundwater and surface water catchment sites. They include the installation of different protective perimeters round the intake areas. However, these measures are not always easy to implement. The regulation must above all be backed up by a campaign of information and widespread advisory and consultancy services to users of these plant protective products.

The basis of the EQO approach is the definition of beneficial uses of fresh and saline waters and the setting of Environmental Quality Standards (EQSs) to protect the uses with consent conditions for discharges being set so as to meet the relevant EQSs in the receiving waters. However, in response to the Ministerial Conference on the Protection of the North Sea in 1987, the UK has adopted the dual approach (applying uniform emission standards (UESs) and EQSs whichever are the more stringent) for the control of particularly dangerous “Red List” substances.

Concerning the surface waters, a temporary authorization has been given by the Health Minister. During the first year of application, specific control will be done by a state laboratory appointed by the relevant department of the Ministry of Health. 1µg/1 of atrazine in the water is dependent on the treatment train and the concentration of atrazine in raw water (table 3). The necessary level of investments is so dependent on the size of the plant that it is impossible to generalize. CONCLUSION These new rules in water treatment show the difficulty created by a change in the regulation.

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