JIANG Ming-jie,XIA Ye.Performance and Parameters Optimization of Hydraulic Flushing in Small Diameter Inverted Siphon[J].China Water & Wastewater,2021,37(7 7):92-95.
Performance and Parameters Optimization of Hydraulic Flushing in Small Diameter Inverted Siphon
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
7 7
Page:
92-95
Column:
Date of publication:
2021-04-01
- Abstract:
- In order to extend service life of sewage pipelines, reduce pipeline flushing costs and the risk of manual maintenance, and improve the management level of sewage pipelines, a method for hydraulic flushing of small diameter inverted siphon was designed, and relationship between flow velocity of the inverted siphon pipeline and content of sludge sedimentation, variations in flow velocity of the inverted siphon pipeline before and after water storage and flushing, relationship between water storage and flushing performance of the inverted siphon pipeline, and relationship between flushing frequency and sedimentation content of the inverted siphon were explored. With the increase of flow velocity, the amount of sludge sedimentation tended to be a gradual decreasing trend. As the water storage capacity of the intercepting shield increased, the flow velocity of the inverted siphon pipeline gradually increased. When the water level exceeded 55 cm, the flow velocity increased slowly. When the interception water level was between 50 cm and 55 cm, the removal efficiency of sludge concentration in the inverted siphon pipeline increased obviously. Therefore, the optimal water level was 55 cm, and the optimal flushing frequency of the device was 3 times/day. Self-flushing equipment had a very good removal performance on floating and suspended matters in the pipeline.
Last Update:
2021-04-01