As a tool of environmental policy, many countries in a world attach importance to voluntary agreement increasingly. The paper summarized that Voluntary Environment Agreements (VEAs) was put into practice in textile printing and dyeing industry of Jingzhou, put forward a frame of the VEAs and its details which are implemented in the city, investigated and analyzed the concrete measures that were adopted by a part of the textile and dyeing enterprises in performing VEAs, and the preliminary effects in energy-saving and emission-reduction engendered by the measures. The practices indicated that textile and dyeing enterprises adopting VEAs is beneficial to enhance their productivity and management, and to decrease their energy consumption and the amount of sewage. To encourage the enterprises adopting VEAs, the government should support them in relevant policy and financing, solve their capital deficit and the increased cost due to the advanced environment management.
Fluorescence spectroscopy was performed to investigate the composition changes and characteristics of the leachate DOM (dissolved organic matter) during UV-TiO 2 photocatalytic treatment process. The results showed that fulvic-like, tryptophan-like and humic acids-like matters were the main compounds in leachate. During photocatalytic treatment process, fluorescence spectroscopy of DOM changed considerably. The final products were mainly fulvic-like and tryptophan-like matters. In general, the fluorescence signals of humic acids-like matters had the most significant change, which disappeared entirely after 60 h treatment, implying that humic acids-like matters can be degraded preferentially by photocatalysis. The other notable change was in VIS fulvic-like matters region, which suggested that fulvic-like matters can be significantly degraded. In 72 h photocatalytic effluent, VIS fulvic-like, tryptophan-like and tyrosine-like matters were remained, and the last two matters were the dominant fractions. These results indicated that fulvic-like and humic acids-like matters with macromolecular can be degraded into protein-like matters with micro-molecular by photocatalysis.
In recent years, due to water pollution water quality in Jingzhou City has been deteriorating and does not come up to the national standard of drinking water. Incompetent water over the district leads to scarcity of potable water, especially in the rural area more than 60% of the total population has a low reliability in drinking water security. For solving this problem some useful strategies should be taken, including: a) environmental supervision at Jingzhou section of Yangtze River; b) prevention and control of water pollution where has been or will take place in rivers and lakes within the district; c) financial and technological support on rural drinking water project and rural environmental protection; and d) establishment of central water supply construction in the rural area.
'/%3e%3cuse xlink:href='%23a' transform='rotate(23.036 .093 25.536)'/%3e%3cuse xlink:href='%23a' transform='rotate(45.87 1.273 16.18)'/%3e%3cuse xlink:href='%23a' transform='rotate(69.945 .996 12.078)'/%3e%3cuse xlink:href='%23a' transform='rotate(20.66 -19.689 31.932)'/%3e%3c/svg%3e)
'/%3e%3cuse xlink:href='%23a' transform='rotate(60)'/%3e%3ccircle r='17' fill='%23000095'/%3e%3ccircle r='15' fill='%23fff'/%3e%3c/svg%3e)