ผลของการเติมพอลิเมอร์ประจุบวกต่อการสร้างเม็ดตะกอนจุลินทรีย์ในระบบยูเอเอสบีสำหรับบำบัดน้ำเสียอุตสาหกรรมอาหารทะเล / สุทธิศักดิ์ พฤกษานุศักดิ์ = Effect of cationic polymer addition on granulation of sludge in UASB system for treatment of seafood industrial wastewater / Suttisak Pruksanusak
This research aims to study the effect of cationic polymer addition on sludge granulation of UASB with polymer concentrations at 6 and 8 mg/g-VSS, and also studied the efficiency of cationic polymer adding in the UASB system by 3 operating reactors. The first reactor was control without polymer addition while the second and the third were added at 6 and 8 mg/g-VSS, respectively. The raw industrial wastewater was used in the experiment with organics loading rate 1 – 6 kg-COD/m3/d. The results showed that the addition of polymer dosage 6 and 8 mg/g-VSS. produced large size of sludge granule during the start up of system. Density of sludge granule in the second reactor had higher density than the other reactors at the end of experiment. The COD and BOD treatment efficiencies for both of polymer-added reactors were higher than 90 percent and also found that solid wash out at organics loading rate 6 kg-COD/m3/d. The second reactor produced the highest biogas volume in this experiment. From the overall results, indicate that the optimum dosage of cationic polymer addition of UASB system was 6 mg/g-VSS to help the sludge granules increase its size and enhance stability of the system.