| Summary: | 碩士 === 淡江大學 === 水資源及環境工程所 === 82 === The study proceeded organic treating tests with disperse day
manufacturing plant's high concentration wastewater which was
diluted to T.COD<700 mg/L and treated by Activated Sludge
process and PACT methods to remove color and meet the effluent
standards of 1993 and 1998. Results of this study are
delineated as following: 1.The manufacturing wastewater of
disperse dye industries is inh- ibitive type of water,therefore,
the COD concentration of influ- ent should be diluted to a
level of no more than 700 mg/L to p- revent the inhibition of
microorganism. According to there sul- ts of a contineous
activated sludge system test, when the F/M ratios were lower
than 0.4kg-T.COD/kg-MLVSS-day,the batter eff- ects were
oftained. 2.The biokinetic constants of activated sludge
systems for treat- ing manufacturing wastewater from the
disperse dye industries are asfollowing (S.BOD basis):
k=0.008191/day,k'=2.6631/day,Yt= 0.450mg-MLVSS/mg-S.BOD removal,
Kd=0.00687 1/day,a'=0.628mg-O2/ mg-S.BOD removal,b'=0.0387mg-O2/
mg-MLVSS-day. According to the constants listed obove,the
biokinetic constants of wastewater from dye industries are
lower than those of general industries, that is,it is difficult
to be biodegraded. 3.The biokinetic constants of PACT systems
for treating manufact- uring wastewater from the disperse dye
industries are as follo- wing (PAC dosage=1500mg/L S.BOD basis):
k=0.0139 1/day,k'=5.534 1/day, Yt=0.185 mg-MLVSS/mg-S.BOD
removal,Kd=0.0325 1/day, a'=0 .249 mg-O2/mg-S.BOD removal,
b'=0.0613 mg-O2/mg-MLVSS-day. The k and k' values of PACT are
higher than those of activated sludge systems,that is,PACT can
adsorb the non-biodegradable and toxis substances in the
wastewater to increase reaction rates.
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