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Sarwoko Mangkoediharjo
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Chemical Engineering, Chemistry & Bioengineering Environmental Science

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KAJIAN PERBANDINGAN MODEL ALIRAN AIR LIMBAH DOMESTIK SECARA UPFLOW DAN DOWNFLOW PADA BIDANG EVAPOTRANSPIRASI Sarwoko Mangkoediharjo
Purifikasi Vol 6 No 1 (2005): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v6.i1.260

Abstract

Penelitian ini menggunakan limbah domestik dari effluen Instalasi Pengolahan Limbah Tinja (IPLT), Keputih. Variasi jenis tumbuhan yang digunakan, yaitu bayam cabut (Amaranthus trocolor) dan rumput paitan (Axonopus compressus). Pada aliran upflow nilai efisiensi penurunan BOD5 75,38 - 96,60 %, sedangkan aliran downflow sebesar 71,86 - 91,71 %. Untuk penurunan N-Total efisiensi pada aliran upflow sebesar 69,85 - 95,46 % dan pada aliran downflow sebesar 42,02 - 90,20 %. Sedangkan pada P-Total, efisiensi penurunan pada aliran upflow 87,84 - 96,72 % dan pada aliran downflow 83,92 - 91,78 %. Perbandingan jenis pengaliran dalam menurunkan konsentrasi air limbah menunjukkan bahwa aliran upflow dengan tumbuhan rumput paitan merupakan suatu kriteria desain bidang evapotranspirasi paling efektif dalam pengolahan limbah domestik.
PENGOLAHAN AIR PAYAU DENGAN PEMBUBUHAN BESI (II) SULFAT MENGGUNAKAN SARINGAN PASIR SILIKA UNTUK MENGHASILKAN AIR BERSIH Sarwoko Mangkoediharjo
Purifikasi Vol 6 No 2 (2005): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j25983806.v6.i2.279

Abstract

The objective of this research is to assess the limits of chloride concentration in brackish water which can be treated by ferrous sulphate addition to produce clean water. Two types of brackish water were examined, i.e. artificial brackish water and natural brackish water from shallow wells in Sutorejo, Surabaya. The artificial brackish water is made of NaCl solutions which contains 0,6 g Cl-/L, 1,2 g Cl-/L, and 3,65 g Cl-/L. Separation of salt flock from the solution was carried out in silica sand filter. The particle size of silica sand was 2,36 mm and 1,18 mm. Results of the treatments were, brackish water which contains chloride up to 1,2 g Cl-/L were appropriate to be treated by ferrous sulphate to produce chloride less than 0,6 g Cl-/L in accordance with Indonesian clean water quality standard. Addition of ferrous sulphate for the ratio of FeSO4/NaCl = 1,07–2,14 were appropriate to be used without significant influence on process production. The efficiency of chloride deconcentration achieved to about 84%. The particle size of silica sand of 2,36 mm and 1,18 mm did not influence to the quality of treated water for brackish water up to 1,2 g Cl-/L, however, the particle size of 1,18 mm was more efficient for brackish water more than 1,2 g Cl-/L.
STUDI PENGENDALIAN LEACHATE LANDFILL KENJERAN SURABAYA DENGAN UJI REMOVAL COD DALAM CONSTANT HEAD TEST MELALUI VARIASI KOMPOSISI MEDIA TANAH DAN UJI TOKSISITAS LEACHATE TERHADAP IKAN BANDENG (Chanos-Chanos (FORSK)) Sarwoko Mangkoediharjo
Purifikasi Vol 4 No 4 (2003): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (192.342 KB) | DOI: 10.12962/j25983806.v4.i4.327

Abstract

Studi pengendalian lindi dari landfill diawali dengan menggunakan tanah asli dari landfill dengan sterilisasi maupun tanpa sterilisasi dan pasir pantai ria Kenjeran. Kemudian dilakukan pendekatan hasil dengan komposisi tanah yang sama dengan tanah asli landfill Kenjeran. Parameter yang digunakan adalah COD, pH, TDS, kekeruhan dan DO. Guna menunjang hasil yang memuaskan, penelitian ini dilengkapi dengan uji toksisitas terhadap Chanos-Chanos (FORSK) yang merupakan organisme uji yang sudah distandarisasi dan cukup merefleksikan kondisi organisme laut disekitar landfill pantai ria Kenjeran, Surabaya. Hasil yang didapat yaitu nilai konsentrasi LC-50 7,00%, batas atas 13,30% dan batas bawah 3.68% dari hasil uji toksisitas leachate terhadap ikan bandeng.
UJI EKOTOKSISITAS MIKROBIAL UNTUK PENENTUAN BEBAN VOLUMETRIK SUATU PARAMETER MUTU DALAM PENGOLAHAN MIKROBIAL AIR DAN LIMBAH Sarwoko Mangkoediharjo
Purifikasi Vol 4 No 2 (2003): Jurnal Purifikasi
Publisher : Department of Environmental Engineering-Faculty of Civil, Environmental and Geo Engineering. Institut Teknologi Sepuluh Nopember, Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (471.267 KB) | DOI: 10.12962/j25983806.v4.i2.340

Abstract

The weakness of conventional method is background the test of ecotoxicity mikrobial for processing mikrobial water and wastewater. From study we can hypothesis that there is correlation among volumetric mass and concentration level activity mikrobial equal to 50 % ( EC - 50 - TD). With the method test of ecotoxicity mikrobial yeast in a anaerobik condition during 2 hours, that possibility searched for the parameter quality of COD, NO-3, PO43-, Mn2+ and Fe2+. From the result give information of level of BV and EC - 50 - 2 hours and correlation between both of them; that is BV can be increasing as long as concentration input to the reactor mikrobial minimized or on the contrary.
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