analysis of a pilot-scale anaerobic baffled reactor treating domestic ...
analysis of a pilot-scale anaerobic baffled reactor treating domestic ...
analysis of a pilot-scale anaerobic baffled reactor treating domestic ...
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The r<strong>reactor</strong><br />
was initially<br />
commmissioned<br />
att<br />
the Umbilo WWTP. Thhis<br />
location wwas<br />
chosen because<br />
<strong>of</strong> itss<br />
proxiimity<br />
to the University o<strong>of</strong><br />
KwaZulu-Natal<br />
and because b it haad<br />
a well equuipped<br />
labor ratory wheree<br />
routinne<br />
analyses ccould<br />
be carrried<br />
out.<br />
In thiis<br />
section, thhe<br />
start-up ddata<br />
<strong>of</strong> the piilot-<strong>scale</strong><br />
AB BR are preseented.<br />
The ddata<br />
collectio on cannot bee<br />
claimmed<br />
to have been underttaken<br />
directly<br />
as part <strong>of</strong> o this studyy<br />
as overall managemen nt, sampling, ,<br />
analyyses<br />
and datta<br />
collection were mostlly<br />
performed d by people who left thhe<br />
project te eam in 2001<br />
(Figuure<br />
1.2). Duuring<br />
this phhase<br />
<strong>of</strong> the experimenta ation, First BBell<br />
and theen<br />
Dama sup pervised thee<br />
operaation<br />
<strong>of</strong> the <strong>pilot</strong> plant with the assistance<br />
<strong>of</strong> Mtembu. M Saamples<br />
for a<strong>analysis</strong><br />
wer re taken andd<br />
analyysed<br />
by memmbers<br />
<strong>of</strong> the UUmbilo<br />
WWTTP<br />
staff.<br />
Muchh<br />
<strong>of</strong> the data that are presented<br />
in thiis<br />
chapter ha ave been pressented<br />
elsewwhere<br />
(Dama et al., 2002; ;<br />
Foxon<br />
et al., 20006)<br />
They aree<br />
presented aagain<br />
here fo or completenness.<br />
The daata<br />
have been n reanalysedd<br />
and thhe<br />
interpretaation<br />
and connclusions<br />
may<br />
be conside ered to be oriiginal<br />
for thee<br />
purposes <strong>of</strong> f this study.<br />
4.1<br />
4 EXPEERIMENNTAL<br />
PHA ASE I: UUMBILO<br />
WWWTP<br />
2000-2001 2 1<br />
UMBILO WWWTP<br />
INSTALLATIONN<br />
Figurre<br />
4.1 showss<br />
the installaation<br />
<strong>of</strong> the p<strong>pilot</strong>-<strong>scale</strong><br />
AB BR at the heead<br />
<strong>of</strong> workss<br />
at Umbilo WWTP. W Thee<br />
comppressor<br />
that ssupplied<br />
air tto<br />
the valve wwas<br />
housed on o top <strong>of</strong> the <strong>reactor</strong>.<br />
Figurre<br />
4.1: PPhotographss<br />
<strong>of</strong> the fronnt<br />
and back k <strong>of</strong> the pillot-<strong>scale</strong><br />
ABBR<br />
installed at head <strong>of</strong>f<br />
wworks,<br />
Umbiilo<br />
WWTP<br />
The ssubmersible<br />
pump was llowered<br />
intoo<br />
the influen nt channel neext<br />
to the reeactor<br />
at the head <strong>of</strong> thee<br />
workks.<br />
The PLC was housedd<br />
in an encloosure<br />
in a control c roomm<br />
seen in thee<br />
right <strong>of</strong> the<br />
right-handd<br />
picturre<br />
in Figure 4.1. The <strong>pilot</strong>-<strong>scale</strong><br />
ABRR<br />
was filled with screeneed<br />
and degrittted<br />
wastewa ater from thee<br />
infloww<br />
channel. 110<br />
ℓ <strong>of</strong> disperrsed<br />
anaerobbic<br />
sludge fro om the Umbbilo<br />
<strong>anaerobic</strong><br />
digesters was w added too<br />
the fiirst<br />
compartmment.<br />
Umbiilo<br />
WWTP trreats<br />
a combbined<br />
industrrial<br />
and dome estic wastewwater,<br />
where tthe<br />
industria al componentt<br />
arisess<br />
mainly fromm<br />
nearby texxtile<br />
industriies.<br />
The wast tewater thereefore<br />
<strong>of</strong>ten ccontains<br />
dye effluent andd<br />
rags. The rags rregularly<br />
cauused<br />
obstrucctions<br />
in the e pump imppellor<br />
chambber<br />
resulting g in no-floww<br />
61
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