ZHANG Yan-yan.Design of Advanced Treatment Phase Ⅱ Reconstruction and Expansion Project of a Waterworks in Suzhou[J].China Water & Wastewater,2021,37(16 16):63-67.
Design of Advanced Treatment Phase Ⅱ Reconstruction and Expansion Project of a Waterworks in Suzhou
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
16 16
Page:
63-67
Column:
Date of publication:
2021-08-17
- Keywords:
- reconstruction of advanced treatment; adjustment of construction field; ozone biological activated carbon process
- Abstract:
- Due to the newly acquired land expropriation cannot be carried out in a waterworks in Suzhou, the phase Ⅱ advanced treatment reconstruction and expansion project can only be constructed in a small built-up area in front of the plant. After further selection of the treatment process, an ozone biological activated carbon process identical to that of phase Ⅰ project was still used in the phase Ⅱ project. In order to increase the total advanced treatment capacity of the plant to 60×104 m3/d, treatment capacity of phase Ⅰ advanced treatment comprehensive tank was transformed from 25×104 m3/d to 35×104 m3/d, and the original corresponding phase Ⅱ conventional treatment system （25×104 m3/d） was changed to the corresponding phase Ⅰ system （35×104 m3/d）. The treatment capacity of new phase Ⅱ advanced treatment comprehensive tank was designed to be 25×104 m3/d, which was corresponding the phase Ⅱ conventional treatment system. Hydraulic process and external pipelines were adjusted to adapt to the change of the corresponding relationship of conventional processing line caused by land use change. After the transformation, effluent quality met Standards for Drinking Water Quality (GB 5749-2006), CODMn in the effluent was reduced from 1.36 mg/L to 1.34 mg/L, turbidity decreased from 0.28 NTU to 0.24 NTU, and ammonia nitrogen was always lower than the detection limit.
Last Update:
2021-08-17