Treatment of Polluted Source Water by Enhanced Combined Ultrafiltration
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第36卷
Number:
7 7
Page:
42-46
Column:
Date of publication:
2020-04-01
- Keywords:
- source water; ultrafiltration; on-line coagulation; bio-contact oxidation; ammonia nitrogen; organic matter
- Abstract:
- Aiming at the source water mainly polluted by ammonia nitrogen and organic matters, a 1.2 m3/h enhanced combined process of online coagulation, biocontact oxidation and ultrafiltration was carried out. The hydraulic retention time of the biological treatment tank should be 70 min and 110 min respectively when the enhanced combined process was operated at normal temperature and low temperature. When the ammonia nitrogen concentration in the raw water fluctuated between 1.22 mg/L and 3.38 mg/L, the ammonia nitrogen concentration in the effluent was less than 0.5 mg/L, and the removal rate was 92% at normal temperature and 89% at low temperature. The enhanced combined process also had a good removal effect on CODMn, and the CODMnconcentrations in the influent and effluent were 2.88-5.58 mg/L and less than 2 mg/L, respectively. Three-dimensional fluorescence spectrum analysis showed that the enhanced combined process also had a good removal effect on fluorescent soluble organic matters.
Last Update:
2020-04-01