According to requirements of the State and Jiangsu Province for the prevention and control of water pollution in the Taihu Lake Basin, before the end of 2008, Jiangsu Province must complete the complete dephosphorization and denitrification transformation of 139 putative and 30 urban sewage treatment plants under construction in Taihu Lake Basin. 3.6 million tons / day, about 2.7 billion investment. It is reported that all urban sewage treatment plants in the Taihu Lake Basin will implement the most stringent emission standards, and the chemical oxygen demand emission standard limit will be adjusted from 60 to 120 mg/L to 50 to 60 mg/L; the ammonia nitrogen emission standard limit will be 15 mg/L adjusted to 5 mg/L; the TP limit will be adjusted from the original 1 mg/L to 0.5 mg/L.
In order to ensure the economical application of the phosphorus and nitrogen removal transformation technology and equipment, and to complete the “upgrading and upgrading of the sewage treatment plant†within the specified time, the Jiangsu provincial government allocated special funds to carry out the technical research of 10 topics. Considering the sources of nitrogen and phosphorus pollutants in the influent water of urban sewage treatment plants and the follow-up inspection of ecological treatment technologies.
1, environmental protection, low noise, high efficiency;
2, save the data for more than one year, and have power down protection function;
3. Different arrangement direction, winding Angle and section Angle can be selected;
4, Photoelectric induction switch technology, high accuracy, turn length and turn number is accurate;
5, Stepper motor wiring, spacing can be accurately controlled;
6. Two sensors are used for counting, which makes counting more accurate and reduces manual work in the measuring circle.
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