FANGWen-min,HONGXiao-wei,ZHANGCi-hua,et al.Influence of Crushed Kitchen Waste on Public Drainage System[J].China Water & Wastewater,2023,39(1):34-38.
Influence of Crushed Kitchen Waste on Public Drainage System
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第39卷
Number:
第1期
Page:
34-38
Column:
Date of publication:
2023-01-01
- Abstract:
- The water quality, sewage sewer design, septic tank design and maintenance of kitchen waste drainage in China were investigated to explore the influences of crushed kitchen waste on public drainage system. The ratio of COD, TN and TP in kitchen waste was 174.2∶5.7∶1, which had the potential to alleviate the shortage of carbon source in sewage treatment plants. After the crushed kitchen waste was discharged into the sewer, the COD, TN and TP in the sewage at the end of the sewer were 413.0 mg/L, 64.55 mg/L and 8.13 mg/L, respectively, and those in the sewage at the outlet of the septic tank were 300.4 mg/L, 54.53 mg/L and 4.33 mg/L, respectively. The diameter of crushed kitchen waste particles was between 1.5 mm and 6.4 mm, and the starting critical velocity in the sewer was between 0.014 m/s and 0.037 m/s, which was much less than 0.6 m/s. Therefore, the possibility of sewer blockage caused by kitchen waste disposal was small. The application of kitchen waste disposal increased the design volume of septic tank by 20.9%, and shortened the cleaning cycle by the maximum of 68 days.
Last Update:
2023-01-01