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The problems and treatment methods faced by landscape water treatment
The problems and treatment methods faced by landscape water treatment
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The treatment problems and methods faced by landscape water treatment
Landscape water usually refers to water bodies used for visual viewing, which are usually divided into two categories: one is natural water features, such as natural lakes, rivers, etc; Another type is artificial water features, such as fountains, artificial lakes, and small urban rivers, which are all open-air surface water with very low self purification capacity and are very susceptible to pollution. Engineering measures to improve and maintain landscape water quality to meet specified standards at lower investment and operating costs; Landscape water usually includes ponds, artificial lakes, small rivers flowing through cities, etc. Landscape water management needs to be tailored to local conditions and comprehensively managed. Common methods include physical methods, biological methods, and ecological methods.Assuming no sewage is discharged, landscape water mainly faces the following main pollution factors:
1. The organic matter and nitrogen and phosphorus elements in the surface and soil brought by surface runoff of rainwater (the pollution level of surface rainwater is equivalent to that of domestic sewage);
2. The external organic matter and nitrogen and phosphorus elements brought by atmospheric dust deposition;
3. The organic matter accumulated from the accumulation of dead biological communities in the lake itself;
4. Exposure to the sun during high temperatures in summer leads to a massive outbreak of blue-green algae.
Landscape water treatment is a new industry in China, and the real demand has only emerged in the past 3-5 years, and the market is relatively small. The lack of professional governance companies and researchers is a chronic problem in this field. There are now a group of new companies in the field of landscape water treatment, with various methods and unsatisfactory results. Some swimming pool water management companies have switched to using filtration methods to manage landscape water in swimming pools; Some scientific research institutions participate in using aquatic plants and fish farming for management; There are other methods available, such as drug administration, biological agent administration, ecological based method, insect administration, etc.
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