8/10/2019 Shofiya Wardah Nabilah__131411026_pengaruh Laju Alir Filter Water Dengan Laju Alir Air Limbah Terhadap Penurun

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PENGARUH LAJU ALIR FILTER WATER DENGAN LAJU ALIR AIR LIMBAHTERHADAP PENURUNAN NILAI CHEMICAL OXYGEN DEMAND (COD) PADA UNITANOKSIK PT. ASIA PACIFIC FIBERS, Tbk

Influence of Filter Water Flow Rate with Wastewater Flow Rate Toward Reduction of

Chemical Oxygen Demand (COD) Value in noxic !nit "T# sia "acific Fi$ers% Inc

Tugas &hir% ' * +',+ * T-I

Un!"#"$%$&! T'!! "*+ JBPTPPOLBAN -/01//12 /34/54-/O6!' 4 A&78n$ S%k+$ P%&"8 15/9//0: ; F$'+8 N$!n#$"%' 6$% $68" 86&!"7$&!" !n#$n 6$% $68" $8" 68+b$' &!"'$$> >!n%"%n$n n86$8 COD. B!"b$#$8 $"8$8 ?$n# 86$k%k$n$$6$' 6$% $68" 86&!" 7$&!", 6$% $68" $8" 68+b$', $n n86$8 COD $7$6. H$86 >!n!68&8$n 8>!"*6!'>!n#$"%' 6$% $68" 86&!" 7$&!" !n#$n 6$% $68" $8" 68+b$' &!"'$$> >!n%"%n$n n86$8 COD+!n#8k%&8 >!"$+$$n ?3,0:03-9,: &!"'$$> n86$8 COD $7$6 $n >!"$+$$n ?,/:0,929 &!"'$$> >!n%"%n$n n86$8 COD. K$&$ k%n@8 4 %n8& $n*k8k, C'!+8@$6 O?#!n D!+$n(COD), 86&!" 7$&!", $8" 68+b$'

./TRCT

Anoxic unit is one unit of the Wastewater Treatment Plant (WWTP) in PT. Asia PacificFibers, Tbk. Effluent from the anoxic unit will directly flow to the aeration unit, but roblemsoften arise when the anoxic unit!"s effluent which enter the aeration unit has a #alue of$hemical %xy&en 'emand ($%') abo#e m because the aeration unit has a standard#alue for incomin& $%' that should not exceed that #alue. %ne of the method to fulfilled thatstandard is addin& filter water to the anoxic unit. This research was conducted to study about theinfluence of initial $%' #alue toward ratio of filter water flow rate with wastewater flow rateand the influence of ratio of filter water flow rate with wastewater flow rate toward thedecreasin& of $%' #alue at the ran&e of *!+- m. From the research, the a#era&eratio between the flow rate of filter water with wastewater flow rate obtained followed theeuation y/*,01x20*-3,1 toward initial $%' #alue and euation y/,1x!+0,343 towarddecreasin& of $%' #alue. 5eywords 6 anoxic unit, $hemical %xy&en 'emand ($%'), filterwater, wastewater

8/10/2019 Shofiya Wardah Nabilah__131411026_pengaruh Laju Alir Filter Water Dengan Laju Alir Air Limbah Terhadap Penurun

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Re0isi Oleh 1 /hofiya Wardah 2a$ilah (,,3,,'+)

-elas ,4D Te&ni& -imia 5 +',3

./TR-

Un8& $n*k8k +!"%>$k$n $6$' $&% %n8& ?$n# $$ >$$ In&$6$8 P!n#*6$'$n A8" L8+b$'(IPAL) 8 PT. A8$ P$@88@ F8b!", Tbk. E6%!n& $"8 %n8& $n*k8k $k$n 6$n#%n# 8+$%kk$n k!$6$+ %n8& $!"$8, &!&$>8 >!"+$$6$'$n !"8n#k$68 +%n@%6 k!&8k$ !6%!n& $"8 %n8& $n*k8k ?$n#+$%k k! $6$+ %n8& $!"$8 +!+868k8 n86$8 C'!+8@$6 O?#!n D!+$n (COD) 8 $&$ >>+k$"!n$ %n8& $!"$8 +!+868k8 &$n$" n86$8 COD ?$n# +$%k &8$k b*6!' +!6!b8'8 n86$8 &!"!b%&.S$6$' $&% +!&*$ ?$n# 86$k%k$n %n&%k +!+!n%'8 &$n$" &!"!b%& $$6$' +!n##%n$k$n>!n$+b$'$n 86&!" 7$&!" >$$ %n8& $n*k8k. P$$ >!n!68&8$n 8n8 8>!6$$"8 >!n#$"%' 6$% $68" 86&!"7$&!" !n#$n 6$% $68" $8" 68+b$' &!"'$$> >!n%"%n$n n86$8 COD. B!"b$#$8 $"8$8 ?$n# 86$k%k$n$$6$' 6$% $68" 86&!" 7$&!", 6$% $68" $8" 68+b$', $n n86$8 COD $7$6. H$86 >!n!68&8$n 8>!"*6!'>!n#$"%' 6$% $68" 86&!" 7$&!" !n#$n 6$% $68" $8" 68+b$' &!"'$$> >!n%"%n$n n86$8 COD

+!n#8k%&8 >!"$+$$n ?3,0:03-9,: &!"'$$> n86$8 COD $7$6 $n >!"$+$$n ?,/:0,929 &!"'$$> >!n%"%n$n n86$8 COD.

K$&$ k%n@8 4 %n8& $n*k8k, C'!+8@$6 O?#!n D!+$n (COD), 86&!" 7$&!", $8" 68+b$'

./TRCT

The Anoxic unit is one unit of the Wastewater Treatment Plant (WWTP) in PT. AsiaPacific Fibers, Tbk. The effluent from anoxic unit will be directly inserted into unit aeration, butroblems often arise when the effluent from the anoxic units into units of aeration %xy&en$hemical 'emand #alue ($%') abo#e the m because the aeration unit has a standard#alue for incomin& $%' that should not exceed that #alue. %ne of the method to fulfilled thatstandard is addin& filter water to the anoxic unit. This research was conducted to study about theinfluence of initial $%' #alue toward ratio of filter water flow rate with waste water flow rateand the influence of ratio of filter water flow rate with waste water flow rate toward thedecreasin& of $%' #alue at the ran&e of *+- m. From the research, the a#era&e ratiobetween the flow rate of filter water with wastewater flow rate obtained followed the euationy/*,01x20*-3,1 toward initial $%' #alue and euation y/,1x!+0,343 toward

decreasin& of $%' #alue.5eywords 6 anoxic unit, $hemical %xy&en 'emand ($%'), filter water, wastewater