Objektif projek ini iaiah menilai keberkesanan sistem rawatan RBC di Pekan Lama Ipoh
dan kajian makmal tentang corak perlumbuhan bakteria sistem RBC dan faktor-faktor
utama yang mempengaruhinya (beban hidraulik & baban organik). Penyiasatan dibuat
dengan mengkaji kecekapan pcnyingkiran BOD pada unit RBC. Setelah kajian teiiti
terhadap sistem rawatan RBC di Ipoh didapati elluennya tidak dapat memenuhi
Standard B Akta Kualiti Alam Sckitar 1974. Ini disebabkan oleh rekabentuk dan
penyelenggaraaan yang kurang memuaskan. Masalah rekabentuk seperti tiada tangki
^ penstabilan yang menyebabkan kadar alir dan kepekatan influen yang tidak sekata, tidak
ada tangki pengenapan primer dan pemeringkatan dalam sistem RBC. Di samping itu,
kajian juga dibuat tentang kedudukan yang paling sesuai untuk meletakkan unit RBC di
KCP, USM. Untuk kajian tentang kedudukan unit RBC, didapati kedudukan yang paling
sesuai ialah selepas kolam pengoksidaan. Keputusan ini dicapai berdasarkan rekabentuk
asas RBC yang menolong dalam menjangka kos pembinaan, kos operasi dan
selenggaraan. Dengan kedudukan ini, struktur baru seperti penyaring halus, tangki
pengenapan, tangki penstabilan boleh diketepikan kerana fiingsi ini dapat dilakukan oleh
kolam pengoksidaan yang sedia ada. Unit RBC hanya berflingsi sebagai rawatan tertier
untuk memperbaiki kualiti efluen. Kajian makmal RBC tentang corak pertumbuhan
biojisim dibuat berdasarkan kpcekapan pcnyingkiran BOD. Anggapan ialah kecekapan
pcnyingkiran bergantung kepada biojisim yang ada.. Dari hasil kajian ini, didapati
l^ecekapan pcnyingkiran BOD berhubung secara linear kepada beban hidraulik dan beban
organik. Didapati juga kadar pertumbuhan biojisim adalah lambat pada peringkat awal
dan kadar pertumbuhan biojisim mula bertarnbah banyak selepas 15 hari. Selain daripada
itu adalah dijangkakan masa pengaktilan untuk RBC bergantung kepada kadar alir dan
kepekatan influen (beban hidraulik dan beban organik).
______________________________________________________________________________
The objective of this project is to evaluate the efiiciency of RBC treatment plant at Ipoh
Old Town dan laboratory study on biomass development in new RBC system and factor
effecting its efficiency. To carry out this study, the eOlciency removal rate of RBC is
monitored. After some laboratory testing, the RBC at Ipoh Old fown is found to be
ineftecient. The effluent did not meet the Standard B of Quality Environment Act 1974,
The main cause is due to inadequate design and maintenance. The main design problems
are, there is no equalization tank and primary sedimentation tank and no stages in the
^ current RBC unit. These will caused the flactuation in di.scharge and concentration. In
order to overcome this problem, an equalization tank, primary sendimentation tank and
stanging in RBC is proposed. Beside that a desk study was carried out to propose a
'* f
suitable location for RBC treatment plant in USM, KCP and it is found that the most
suitable location for RBC in KCP is after the oxidation pond. The conclusion was made
base on the basis design of the RBC which determine the cost of construction,
maintenance and operation. New structure such as fine screening, equalization tank and
''' primary sendimentation tank can be ommited because the existing oxidation pond will
take over their function. The RBC will function as tertiary treatment to improve the
effluent quality. Study on biomass development was base on the BOD removal
efficiency. This is because the efficiency of BOD removal depend upon the population of
^ biomass. From the results of the study, it is observed that the efficiency of BOD removal
was linearly related to organic and hydraulic loading. The biomass development was
very slow at initial stage but after 15 days of operation the rate of development was
faster. The time used to develop the biomass in RBC media is expected to be dependent
on the hydraulic and organic loading.