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The effect of substrate composition and feeding pattern on the proliferation of filamentous bacteria in the activated sludge process (Record no. 34699)

MARC details
000 -LEADER
fixed length control field	04799cas\|a2200445 i 4500
005 - DATE AND TIME OF LATEST TRANSACTION
control field	20260818095109.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field	150399s1990 th uzm rtt 00\| a1eng d
035 ## - SYSTEM CONTROL NUMBER
System control number	.b10690815
099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC)
Classification number	AIT Thesis no. EV-90-19
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name	Cerino, Grace F.
245 14 - TITLE STATEMENT
Title	The effect of substrate composition and feeding pattern on the proliferation of filamentous bacteria in the activated sludge process
260 ## - PUBLICATION, DISTRIBUTION, ETC.
Place of publication, distribution, etc.	Bangkok :
Name of publisher, distributor, etc.	Asian Institute of Technology,
Date of publication, distribution, etc.	1990
300 ## - PHYSICAL DESCRIPTION
Extent	157 p.
490 1# - SERIES STATEMENT
Series statement	Thesis ;
Volume/sequential designation	no. EV-90-19
500 ## - GENERAL NOTE
General note	A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development
502 ## - DISSERTATION NOTE
Dissertation note	Thesis (M.Eng.) - Asian Institute of Technology, 1990
520 ## - SUMMARY, ETC.
Summary, etc.	Filamentous bulking is one of the problems in wastewater treatment that hinders the activated sludge to produce high quality of eff1uent and thus creating a threat to our environment. Such phenomenon is due to proliferation of certain types of filamentous bacteria which are enhanced by certain set of conditions. To cure this problem is to identify the filamentous bacteria that cause bulking and to know the condition s t h at has caused their excessive growth. Th is will give us a n idea on how to control them and inhibit their growth . Substrate composition a nd feeding pat tern are two major factors that affect their proliferation and they are dealt with in this research . Twelve experiments were undertaken in t his study. In every experiment, a combination of one carbon source - either glucose or acetic acid - a nd one nitrogen source - (NH4 ) 2S04 , NaN0 3 or peptone, together with other nutrients was used. Each kind of substrate composition was subjected to two feeding patterns , namely Continuously Stirred (Fed ) Tank Reactor (CSTR) system and Sequential Batch Reactor ( SBR ) system. Sphaerotilus natans has excessively grown in all substrate composition and has caused filamentous bulking in CSTR system. It h as appeared in all experiments (both CSTR a nd SBR ) with NaN03 as the nitrogen source and has caused bulking more rapidly in acetic acid than in glucose . Haliscomenobacter hydrossis has appeared in a l l experiments with (NH4 ) 2 S04 as nitrogen source. I t grew more in SBR system where growth of Sphaerotilus natans was suppressed and it was almost absent in CSTR sytem. Haliscomenobacter h ydrossis did not grow in acetic acid except only when nitrogen source was ( NH4 ) 2 S011. Haliscomenobacter hydrossis grew most in glucose-peptone medium than in any other substrate composition regardless of the feeding pattern. Its growth was better than Sphaerotilus natansin this medium. I n CSTR system, excessive proliferation of filamentous bacteria was observed. Al t ho ugh Haliscomenobacter hydrossis was moderate in n umbers and slowly growing , there was no filamentous bulking in SBR systems. Sphaerotilus natans was also slowly growing in glucose - NaN03 and glucose - peptone medium in SBR system. Th ese two types of filaments were t h e most common filament in t h e activated sludge that were investigated from t h e three wastewater treatment p l ants in Thailand . In addition Type 1702, Noscodia limicola, Type 1701 a nd Type II
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element	Sewage
General subdivision	Purification
--	Activated sludge process
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Mino, Takashi,
Relator term	Chairpeson
700 0# - ADDED ENTRY--PERSONAL NAME
Personal name	Chongrak Polprasert,
Relator term	Examination Committee
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Suselo, Tri Binarko,
Relator term	Examination Committee
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name	Harada, Hideki,
Relator term	Examination Committee
710 2# - ADDED ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element	Canadian International Development Agency (CIDA),
Relator term	Scholarship Donor
810 2# - SERIES ADDED ENTRY--CORPORATE NAME
Corporate name or jurisdiction name as entry element	Asian Institute of Technology.
Title of a work	Thesis ;
Volume/sequential designation	no. EV-90-19
856 ## - ELECTRONIC LOCATION AND ACCESS
Materials specified	Full-Text
Uniform Resource Identifier	<a href="http://203.159.5.9/ait-thesis/detail.php?q=B18372">http://203.159.5.9/ait-thesis/detail.php?q=B18372</a>
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945 ## - LOCAL PROCESSING INFORMATION (OCLC)
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942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	20-AIT Publication
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type	40-Archives
909 ## - LOCAL ITEMS USED
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Holdings
Not for loan	Home library	Current library	Shelving location	Date acquired	Full call number	Barcode	Date last seen	Copy number	Price effective from	Koha item type	Cost, normal purchase price
Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	AIT Publications	18/08/2026	AIT Thesis no. EV-90-19	30050003045647	18/08/2026	1	18/08/2026	20-AIT Publication
Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	AIT Publications	18/08/2026	AIT Thesis no. EV-90-19	30050003045654	18/08/2026	2	18/08/2026	20-AIT Publication
Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	Archives	18/08/2026	AIT Thesis no. EV-90-19	30050120222871	18/08/2026		18/08/2026	40-Archives
Available for Loans	Asian Institute of Technology Library	Asian Institute of Technology Library	Archives	18/08/2026	AIT Thesis no. EV-90-19	30050121001944	18/08/2026	3	18/08/2026	20-AIT Publication	50.00

The effect of substrate composition and feeding pattern on the proliferation of filamentous bacteria in the activated sludge process (Record no. 34699)

AIT

Asian Institute of Technology Library