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All Journal Jurnal IPTEK Jurnal Sains & Teknologi Lingkungan Prosiding Seminar Nasional Sains dan Teknologi Terapan Jurnal Teknologi dan Manajemen Environmental Engineering Journal ITATS
Afrianisa, Rodu Dhuha
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Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Education Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Public Health

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Evaluasi Unit Koagulasi, Flokulasi, Sedimentasi, dan Filtrasi pada Instalasi Pengolahan Air (IPA) Semanggi Perumda Air Minum Toya Wening Kota Surakarta Sholikhah, Mar’atus; Afrianisa, Rodu Dhuha
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2023: Transformasi Riset, Inovasi dan Kreativitas Menuju Smart Technology dan Smart Energy
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

Perumda Air Minum Toya Wening, yang merupakan Badan Usaha Milik Daerah (BUMD) di Kota Surakarta, bertanggung jawab sebagai penyedia air bersih untuk memenuhi kebutuhan masyarakat akan air bersih. Kualitas air minum yang dihasilkan harus memenuhi persyaratan parameter fisik, kimia, dan mikrobiologis sesuai dengan Peraturan Menteri Kesehatan Republik Indonesia Nomor 2 Tahun 2023 tentang Peraturan Pelaksanaan Peraturan Pemerintah Nomor 66 Tahun 2014 Tentang Kesehatan Lingkungan. Untuk meningkatkan efektivitas pengolahan air dan kualitas air yang dihasilkan oleh IPA Semanggi, perubahan pada unit IPA perlu dilakukan melalui evaluasi kinerja unit bangunan IPA. Proses evaluasi ini melibatkan observasi lapangan dan wawancara terkait Eksisting Instalasi Pengolahan Air (IPA), karakteristik unit-unit IPA, debit pengolahan, kualitas air, serta referensi literatur. Hasil penelitian menunjukkan bahwa Nilai waktu detensi pada unit koagulasi sebesar 461,53 dtk, flokulasi seesar 8,47 menit dan sedimentasi sebesar 2,1 detik dan tidak memenuhi kriteria desain. Pada unit flokulasi, gradient kecepatan bernilai 0,004 detik-1 sehingga belum memenuhi kriteria desain. Pada unit sedimentsi, nilai surface loading rate sebesar 1,19 m3/m2.jam dan belum memenuhi kriteria desain. Pada unit filtrasi, nilai  kecepatan penyaringan sebesar 1,43 m/jam sehingga tidak sesuai dengan kriteria desain
Analisis Timbulan dan Karakteristik Sampah Mudah Terbakar di TPA Banjarsari Kabupaten Bojonegoro sebagai Bahan Baku Refuse Derived Fuel pramudia, Fiqo; Afrianisa, Rodu Dhuha
Prosiding Seminar Nasional Sains dan Teknologi Terapan 2024: Menjembatani Energi Berkelanjutan dan Ekonomi Hijau melalui Transformasi Riset dan Teknologi T
Publisher : Institut Teknologi Adhi Tama Surabaya

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Abstract

The amount of waste entering the Banjarsari Bojonegoro landfill reaches 65 tons per day. Bojonegoro people have a waste generation coefficient of 0.4 kg/person/day. When multiplied by the entire population of Bojonegoro Regency, which is 1.3 million, the waste becomes 520 tons per day. This study aims to utilize the waste pile at TPA Banjarsari as RDF fuel. According to the research findings, the total waste generation taken into TPA Banjarsari was 53,420 kg/day, with plastics (22.09%), fabrics (4.16%), wood (5.07%), paper (5.15%), rubber/leather (1.15%), organics (56.21%), glass (0.74%), metal (1.18%), and others (4.24%). Combustible waste generation at TPA Banjarsari was 20,299.6 kg/day, or 37.6%. Based on an analysis of the waste characteristics, the types of wood that met the RDF standards of the Ministry of Industry in 2017 had a moisture content value of 18.06%, an ash content of 1.29%, a volatile matter content of 66.99%, and a calorific value of 3,788.51%. The waste reduction in scenario 1 (scavengers) yielded 400.07 kg/day, or 0.74%, and residue of 53,019.96 kg/day, or 99.26%. Meanwhile, the waste reduction in scenario 2 (RDF) gained 4,300.31 kg/day, or 8.05%, and residue of 49,199.69 kg/day, or 91.94%. Last, the optimal waste reduction obtained 4,813.19 kg/day, or 9.02%, and residue of 48,606.81 kg/day, or 90.98%. 
Greenhouse Gas Reduction Potential based on Waste Recovery Factor in Gading and Dukuh Setro Subdistrics, Surabaya Pramestyawati, Talent Nia; Afrianisa, Rodu Dhuha; Ath Thoyib, Muhammad Hafizhni
Jurnal IPTEK Vol 27, No 1 (2023)
Publisher : LPPM Institut Teknologi Adhi Tama Surabaya (ITATS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.iptek.2023.v27i1.4498

Abstract

People’s growth and their activities increase waste generation. Therefore, efforts to reduce waste are needed, including community-based reduction efforts. This research is located in Gading and Dukuh Setro sub-districts in Surabaya City. The purpose of this study was to measure the potential for waste reduction and greenhouse gas reduction. Measurement of waste generation, waste composition, and waste density was based on SNI 19-3964-1994. The researcher conducted sampling in low, middle, and high-income areas, covering 83 families. Greenhouse gas emissions were estimated using the LandGEM (U.S. EPA) method based on the waste disposed at landfill, considering the existing reduction conditions and optimal material recovery. Solid waste generation in 2022 per year was 4.695,58 tons. The largest composition of waste consisted of biodegradable waste (37.13%), plastic waste (25.73%), and diapers and sanitary napkins (18.25%). The average density of loose waste was 152.42 kg/m3. The existing reduction had 1.47% waste bank reduction activity and 0.72% composting reduction activity, for a total reduction of 2.19%. The average optimal reduction was 52.7%, whereas the optimal reduction in the waste bank was 17.5%. The optimal composting reduction was 35.2%. Thus, the existing scenario in 2032 obtained reductions from total landfill gas of 725,498 Gg/year, methane of 193,788 Gg/year, carbon dioxide of 531,710 Gg/year, and NMOC of 8,330 Gg/year. Meanwhile, the optimal scenario for 2032 obtained reductions from total landfill gas of 239.067 Gg/year, methane of 63.857 Gg/year, carbon dioxide of 175.209 Gg/year, and NMOC of 0.412 Gg/year
Optimasi Dosis Biokoagulan Biji Pepaya (Carica papaya L.) dalam Penurunan Parameter TSS, BOD, dan COD pada Limbah Tahu Afrianisa, Rodu Dhuha; Yasmine, Yovansyach Arraficha
Environmental Engineering Journal ITATS Vol 5, No 1 (2025): Environmental Engineering Journal ITATS
Publisher : Teknik Lingkungan, Institut Teknologi Adhi Tama Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.envitats.2025.v5i1.7972

Abstract

The wastewater produced by tofu industries contains high concentrations of organic substances such as proteins, carbohydrates, and fats, which can significantly increase the Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) if not properly treated. Therefore, treatment is required before the water can be discharged into receiving water bodies. This study was conducted using the coagulation–flocculation method, with papaya seed powder used as a natural coagulant. The objective of the research was to determine the optimum dosage of papaya seed bio-coagulant and to evaluate its effectiveness in reducing TSS, BOD, and COD levels under different slow mixing speeds. The dosage variations used in this study were 0.2 g/L, 0.4 g/L, 0.6 g/L, 0.8 g/L, and 1 g/L. The rapid mixing was carried out at 150 rpm for 1 minute, followed by slow mixing at 40 rpm and 30 rpm for 15 minutes, and then sedimentation for 30 minutes. The results showed that the optimum dosage of papaya seed bio-coagulant was 0.4 g/L when using rapid mixing at 150 rpm combined with slow mixing at 40 rpm or 30 rpm. At 150/40 rpm mixing speed, the percentage reductions in TSS, BOD, and COD were 41.15%, 55.94%, and 46.60% respectively. Meanwhile, at 150/30 rpm mixing speed, the reductions were 65%, 61.78%, and 51.78% respectively.
Analysis of the Relationship Between Open Defecation Free Behavior and Water Quality in the Kalitebu River, Kali Kedinding Subdistrict, Surabaya Nampira, Anisa Apriliani; Afrianisa, Rodu Dhuha; Pramestyawati, Talent Nia
Jurnal Teknologi dan Manajemen Vol 6, No 1 (2025): January
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jtm.2025.v6i1.6101

Abstract

The Kali Tebu River in Tanah Kali Kedinding Village, Kenjeran District, Surabaya City, is often used by many people to defecate. Data collected by the Tanah Kali Kedinding Community Health Center in 2023 shows that 48 heads of families (KK), or 0.30% of the total population, are still involved in Open Defecation (Open Defecation) in waterways that flow directly into the river. into the Kali Tebu River, this can pollute river water, changing the quality of river water. The aim of the research is to analyze the results of river water quality tests, water quality status. In this research, a questionnaire was filled out to find out the community profile, then tested the parameters based on Minister of Environment and Forestry Regulation No. 68 of 2016 which consists of TSS, pH, BOD, COD, Fatty Oil, Ammonia, and Total Coliform. Then compare the quality status of the Storet method and the Pollution Index (IP) which is guided by Minister of Environment Decree No. 115 of 2003 with River Water Quality in accordance with PP RI No. 22 of 2021 . The test results for the TSS, BOD, COD, Ammonia, Fatty Oil and Total Coliform parameters of the Kali Tebu river do not meet the class quality standards in accordance with Government Regulation no. 22 of 2021, while the pH, COD and fatty oil parameters are compliant. Then the water quality status in the Kali Tebu River was determined using the storet method at points 1 – 3, all of which were included in the heavily polluted category with result values of -102, -100, -98. Meanwhile, to determine water quality status using the average Pollution Index at points 1 - 3, it is included in the heavily polluted category with PIj values 10, namely 20, 22, 23.
Evaluasi dan Perencanaan Ulang Instalasi Pengolahan Air Limbah (IPAL) Industri Pembekuan Ikan PT. X Kabupaten Sidoarjo A’yunin, Qurrotu; Afrianisa, Rodu Dhuha
Jurnal Sains & Teknologi Lingkungan Vol. 16 No. 2 (2024): SAINS & TEKNOLOGI LINGKUNGAN
Publisher : Teknik Lingkungan Universitas Islam Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20885/jstl.vol16.iss2.art2

Abstract

Fisheries have become one of the main economic sectors in Sidoarjo Regency. X Ltd., an industry producing frozen fish, already has a Wastewater Treatment Plant, but the WWTP effluent produced does not meet quality standards. Based on these problems, it is necessary to evaluate the WWTP and then re-plan the WWTP so that the effluent results meet quality standards. The evaluation method was carried out by analyzing samples of wastewater from each WWTP unit, measuring the dimensions of each WWTP unit, and comparing the detention time parameters with the design criteria. The evaluation results showed that the existing WWTP conditions did not meet the design criteria, and the existing WWTP effluent results did not meet the quality standards of East Java Governor Regulation No. 72 of 2013. The recommendation from the evaluation results is to re-plan the WWTP using an Anaerobic-Aerobic filter system. The units used are screens, equalization tanks, initial settling tanks, anaerobic filter tanks, aerobic filter tanks, and final settling tanks. The WWTP plans to treat wastewater with a discharge of 3 m 3 /day and characteristics of the wastewater, i.e., TSS 179 mg/L, BOD 239 mg/L, COD 586 mg/L, and Ammonia 29 mg/L. The WWT dimension is 6m x 1m x 1.5 m.
Co-Authors Ath Thoyib, Muhammad Hafizhni A’yunin, Qurrotu Nampira, Anisa Apriliani pramudia, Fiqo Sholikhah, Mar’atus Talent Nia Pramestyawati Yasmine, Yovansyach Arraficha