WU Yan-hua,ZHANG Ming,ZHEN Xiang-hua,et al.Design of a Green and High-quality Waterworks in Zhuhai[J].China Water & Wastewater,2021,37(18 18):88-92.
Design of a Green and High-quality Waterworks in Zhuhai
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
18 18
Page:
88-92
Column:
Date of publication:
2021-09-17
- Abstract:
- The total scale of a waterworks in Zhuhai is 45×104 m3/d, among which the recent scale is 30×104 m3/d. The purification process of the waterworks consists of preozonation, high efficiency sedimentation tank, air-water backwash filter, ozonecontact tank, granular activated carbon and sand filter, ultrafiltration, UV and NaClO disinfection. The impact of upstream saltiness was avoided as far as possible by selecting high-quality water sources and setting the water intake facilities upstream. Each water purification step was enhanced by the whole multi-stage barrier process. The process of ozonation and activated carbon was employed to reduce the chromaticity, taste and odor, so as to improve the water quality of the drinking water. At the same time, ultrafiltration process was used to reduce the turbidity below 0.1 NTU and reduce the dosage of disinfectant. The combined disinfection process of ultraviolet and chlorination was used to reduce the production of disinfection by-products. The product water was adjusted to weak alkaline to improve the taste and protect the health. The project can provide high-quality drinking water that is better than the criteria specified in Standards for Drinking Water Quality (GB 5749-2006) and Water Quality Standards for Fine Drinking Water (CJ 94-2005).
Last Update:
2021-09-17