ประสิทธิภาพของระบบบำบัดร่วมระหว่างฟิล์มชีวะกับระบบตะกอนเร่งในการบำบัดน้ำเสียชุมชน

Efficiency of Combined Fixed Film and Activated Sludge System for Treating Domestic Wastewater

Name: ศิริลักษณ์ ศิริ

Name: Sirilak Siri

Organization : มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี. คณะพลังงานสิ่งแวดล้อมและวัสดุ. สาขาวิชาเทคโนโลยีสิ่งแวดล้อม

keyword: Biological treatment system

; ระบบบำบัดทางชีวภาพ

Abstract: The research was concerned on the efficiency of combined fixed film and activatedsludge system for treating domestic wastewater. The system was designed on the basis ofimproving the removal efficiency of activated sludge system by adding fiber plate in the aerationtank of activated sludge system. The experiments were carried out by using raw domesticwastewater and synthetic domestic wastewater, contained COD, BOD, TKN and phosphorus atconcentration of 350,250,40 and 6 mgA, respectively.The results showed that the oxygen transfer rate in the aeration tank with and withoutfiber plate were 2.44% and 1.79%, 2.30% and 1.28% and 2.48% and 1.99% at the level of 30,60and 90 cm from the bottom of aeration tank. Experimental results under various continuouslyorganic loading of 0.4, 0.5, 0.65, 0.8 and 1.0 k g ~ 0 ~ / m 3 -sdho,w ed that the COD, BOD, TKNand phosphorus removal eaciencies with lowest organic loading of 0.4 kgEi~~/m%and highestorganic loading of 1. O kgEio~/m~w-de re 89.58% and 7 1.45%, 9 1.74% and 8 1.20%, 73.9 1% and10.48% and 23.49% and 1.34%, respectively. But, the COD, BOD, TKN and phosphorusremoval efficiencies under batch type system with organic loading of 0.5 and 1.0 kgI30~/m3-dwere 86.93% and &4.34%, 92.05% and 88.02%, 30.69% and 15.82% and 28.71% and 18.39%,respectively. The dissolved oxygen in the aeration tank was decreased with the increasing oforganic loading. However, the dissolved oxygen under the highest organic loading of 1.0kg130~/m3-d was higher than 1.0 mg/L Effluent SS was also increased with increasing oforganic loading. However, the emuent SS was lower than 30 mg/l when the organic loading ofsystem was as high as 1.0 kg130~/m3-dI.n addition, the pHs of wastewater in aeration tank andthe emuent were in rage between 6 and 8.The COD, BOD, TKN, phosphorus and SS removal efficiencies with raw domesticwastewater under batch type operation of 1.0 and 2.0 m3/d (or 0.26 k g ~ 0 ~ / m 3a-ndd 0.52kg~0~/m3-wde)r e 76.84% and 64.14%, 80.53% and 75.68%, 68.39% and 39.96%, 11.29% and11.53% and 80.16% and 75.65%, respectively. And the dissolved oxygen and pH in aeration tankand effluent were in rage of 2.0-3.5 mgA and 7.3-7.5 and 1.0-3.0 mgA and 7.4-7.6, respectively.From the experimental results above, the designed system could be used to treatingdomestic wastewater with high efficiency. The qualities of effluent met the standard permissionof Ministry of Science, Technology and Environment.

มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี. สำนักหอสมุด

Address: กรุงเทพมหานคร

Email: info.lib@mail.kmutt.ac.th

Name: สันทัด ศิริอนันต์ไพบูลย์

Role: อาจารย์ที่ปรึกษา

Name: สุวิมล อัศวพิศิษฐ

Role: อาจารย์ที่ปรึกษา

Created: 2544

Issued: 2008-01-21

Modified: 2554-07-14

วิทยานิพนธ์/Thesis

CallNumber: EV294

tha

DegreeName: วิศวกรรมศาสตรมหาบัณฑิต

Level: ปริญญาโท

Descipline: เทคโนโลยีสิ่งแวดล้อม

Grantor: มหาวิทยาลัยเทคโนโลยีพระจอมเกล้าธนบุรี

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