Bela, Massa`adah Nadya Rosa (2019) Optimasi Kinerja Instalasi Pengolahan Air Limbah Industri Pengolahan Kayu di Kabupaten Jombang. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Industri pengolahan kayu berpotensi menghasilkan limbah cair akibat proses pengawetan kayu. Limbah cair yang dihasilkan apabila tidak diolah dengan baik maka menyebabkan pencemaran dan kerusakan badan air. Hal ini disebabkan oleh tingginya kandungan senyawa organik maupun inorganik hasil proses produksi. Industri pengolahan kayu di Jombang menghasilkan limbah cair yang berasal dari proses pengawetan kayu. Proses pengawetan kayu dilakukan dengan perendaman panas, baik dengan penambahan bahan pengawet kimiawi (prevail) maupun tidak. Air sisa perendaman kayu ini yang menjadi limbah cair dan perlu dilakukan pengolahan sebelum dibuang ke badan air. Karakteristik limbah cair yang dihasilkan memiliki rasio BOD/COD <0,2 sehingga pengolahan dengan sistem biologis sukar dilakukan. Industri pengolahan kayu di Jombang telah memiliki IPAL eksisting yang menggunakan sistem fisik-kimiawi. Pengolahan kimiawi menggunakan reagen kimia eksisting membutuhkan biaya yang tinggi. Hal tersebut tidak sebanding dengan hasil olahannya yang masih belum memenuhi baku mutu sesuai PERGUB JATIM No 72 Tahun 2013. Oleh karena itu diperlukan evaluasi dan optimasi kinerja IPAL eksisting agar efektif dan ekonomis dalam mengolah air limbah yang dihasilkan. Percobaan koagulasi-flokulasi menggunakan aluminium sulfat, poly aluminium chloride (PAC) dan FeCl3 dilakukan guna mencari alternatif koagulan yang lebih efektif dan ekonomis. Hasil percobaan menunjukkan koagulan PAC adalah koagulan yang paling efektif untuk mengolah air limbah baik prevail dan nonprevail. Pada air limbah prevail , dosis PAC sebesar 500 mg/L mampu menurunkan parameter COD, TSS dan kekeruhan sebesar 52,63%, 97,14% dan 98,71%. Sedangkan dosis PAC sebesar 50 mg/L mampu menurunkan parameter kekeruhan dan COD sebesar 97,41% dan 85,37%. Hasil optimasi IPAL eksisting meliputi penambahan bak pembubuh koagulan PAC, bak pembubuh NaOH, perencanaan unit sand filter, serta pergantian unit generator ozon. Biaya investasi optimasi IPAL sebesar Rp Rp101.558.604., biaya operasi IPAL sebesar Rp 1.634.395 dan biaya perawatan IPAL sebesar Rp 3.800.000/tahun.
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The wood processing industry has some potential to produce liquid waste due to the wood preservation process. If the wastewater does not treated properly, it will cause pollution and damage to the water bodies. This is caused by high of organic and inorganic compounds during the production process. The wood processing industy in Jombang produces the wastewater from the wood preservation process. The wood preservation process is carried out by heat immersion, whether by adding chemical preservatives (prevail) or not. The remaining water from the soaking wood becomes wastewater and needs to be processed before being discharged into the water body. The characteristics of the wastewater have a BOD/COD ratio <0,2 so that the biological processing systems is difficult to do. The wood processing industy in Jombang has WWTP that used a physical-chemical system. The chemical process using existing coagulant requires high cost to buy the coagulant. But, the result of the effluent water quality still over the quality standards of wastewater according to PERGUB JATIM No. 72 2013. Therefore, the evaluation and optimization peformance of the existing WWTP is needed to make the wastewater process more effective and economical. The coagulation-flocculation experiments using Aluminium sulfate, poly aluminium chloride (PAC) and FeCl3 were carried out to find alternatives coagulant that more effective and economical. The result of this experiment showed that PAC is the most effective coagulant for treating wastewater both prevail and nonprevail. In prevail wastewater, the dose of 500 mg/L PAC is able to reduce COD, TSS and turbidity parameters by 52.63%, 97.14% and 98.71%. While the dose of 50 mg/L PAC is able to reduce turbidity and COD parameters by 97.41% and 85.37%. The results of the WWTP optimization include the addition of the PAC coagulant tub, NaOH tub, sand filter unit and the replacement of the ozone generator unit. The optimization investment cost of WWTP is Rp. Rp101.558.604, the operating cost is Rp 1.634.395/month and the maintenance cost is Rp. Rp 3.800.000/year.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSL 628.3 Bel o-1 2019 |
| Uncontrolled Keywords: | Evaluasi, Koagulan, Limbah Cair Industri Kayu, Optimasi, Pengolahan Kimiawi. |
| Subjects: | T Technology > TD Environmental technology. Sanitary engineering > TD433 Water treatment plants |
| Divisions: | Faculty of Civil Engineering and Planning > Environment Engineering > 25201-(S1) Undergraduate Thesis |
| Depositing User: | Massa'adah Nadya Rosa Bela |
| Date Deposited: | 02 Apr 2024 04:12 |
| Last Modified: | 02 Apr 2024 04:12 |
| URI: | http://repository.its.ac.id/id/eprint/66704 |
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