水体活化技术工艺包治理河道黑臭水体氮磷效果OA

In view of the problems of high investment and maintenance cost in traditional black and odorous water remediation technology,this study applied the activated water technology process package composed of water body self-cleaning device and high-efficiency phosphorus adsorbent to carry out about 130 days application demonstration of black and odorous water remediation and restoration.The main goal is to upgrade the ammonia nitrogen(NH3-N)and total phosphorus(TP)concentrations in water bodies from inferior Ⅴ class to Ⅲ class.The results showed that the NH3-N reduced from 4.00 mg·L-1 to 1.0 mg·L-1 after the operation of the water body self-cleaning device for 100 days,and the TP is reduced from 0.42 mg·L-1 to 0.20 mg·L-1 after the application of high-efficiency phosphorus adsorbent for 4 weeks,both of which are improved from inferior Ⅴ class to class Ⅲ,reaching the requirements of the demonstration goal,and the paired T test between sections also shows that the activated water technology process package has a significant improvement effect on NH3-N and TP.The process package had an investment of about 13.89 yuan per ton of water,and the power cost of one single water body self-cleaning device is about 2.88 yuan·d-1,and the operating cost of about 0.13 yuan per ton of water,which had strong cost performance and could provide a cost-effective solution for the restoration and control technology of black and odorous water.