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Novirina Hendrasarie
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Economics, Econometrics & Finance Energy Engineering Environmental Science Industrial & Manufacturing Engineering Medicine & Pharmacology Public Health Social Sciences

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Pengolahan Limbah Cair Tempe Menggunakan Teknologi Hybrid Anoxic Reactor-Sequencing Batch Reactor Hidayatullah, Naura; Novirina Hendrasarie
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Tempeh wastewater with high organic content requires special treatment to meet environmental standards. This waste has a concentration of BOD5 13,000 mg/L, COD 16,000 mg/L, and Total Nitrogen 2,800 mg/L, far exceeding the quality standards. This study aims to determine the effectiveness of Sequencing Batch Reactor (SBR) in removing pollutants in tempeh liquid waste by adding Anoxic Reactor as pre-treatment and Settling Tank as post-treatment. Variations of HRT, aeration discharge, and settling time were tested to optimize system performance. The results showed that Anoxic Reactor pre-treatment increased Total Nitrogen removal up to 45% at HRT 12 hours. In the SBR unit, optimal conditions occurred at a HRT of 32 hours with an aeration discharge of 14 L/min, resulting in removal of 84% BOD5, 98% COD, and 96% Total Nitrogen. Post-treatment of the settling basin increased the efficiency to 91% BOD5, 87% COD, and 85% Total Nitrogen. The combination of Anoxic Reactor, SBR, and Settling Basin proved to be more effective than without pre-treatment, with the final effluent meeting the quality standards of PermenLHK Number 5 of 2014 and PP Number 22 of 2021, namely: BOD5 133 mg/L, COD 160 mg/L, and Total Nitrogen 21 mg/L.
Efektivitas Absorben Kimia pada Wet Scrubber untuk Menurunkan Emisi CO dan CO2 Sevila Rizki Damayanti; Novirina Hendrasarie
Jurnal Serambi Engineering Vol. 10 No. 1 (2025): Januari 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

Burning bricks can pollute the surrounding air because the smoke produced contains CO and CO2 emissions. This burning causes air pollution and a greenhouse effect (damage to the ozone layer) due to the emission of carbon monoxide gas. Air containing CO and CO2 emissions can be cleaned using the absorption method. The use of a wet scrubber and chemical absorbents that are alkaline in nature will help maximise the absorption process. The aim of this research is to test which absorbent among KOH, NaOH and H2O has the best performance in reducing CO and CO2 levels using a wet scrubber reactor design with pall ring media in the brick burning process. The independent variables used consist of variations in absorbent type, absorbent concentration and media height. The absorbents used are NaOH, KOH and H2O. The respective concentrations of NaOH and KOH absorbents used were 2N, 4N and 6N. The height of the pall ring media was varied to 20 cm and 40 cm. The highest percentage reduction of CO reached 97.9% and CO2 96.0% when using 6N KOH absorbent and 40 cm pall ring media.
Efektivitas Jenis Media Pada Penurunan Kandungan Polutan Air Limbah Laundry Menggunakan Moving Bed Biofilm Reactor Dinda Putri Sriweni; Novirina Hendrasarie
Jurnal Serambi Engineering Vol. 10 No. 2 (2025): April 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

There is an increase in business activity in various fields, one of which is laundry services. This business can develop due to the increasing public demand for laundry services. The more laundry services are developed, the more waste is produced, which becomes an environmental problem. The development of this research idea is to use a variety of natural media (Bambo) and non-natural media (Kaldness K1 and Sponge) to determine the reduction of BOD5, COD, TSS and detergent. As a result, a waste water pollutant content test was carried out and the initial test results were BOD5 334 mg/l, COD 924 mg/l, TSS 142 mg/l and detergent 13.6 mg/l. The initial results show that the pollutant doesn't meet the quality standard according to the Governor's Regulation No. 72 of 2013, so it is necessary to carry out waste water treatment. The research results showed that Kaldness K1 media was the most effective in reducing the pollutant with BOD5 29 mg/l, COD 85 mg/l, TSS 48 mg/l and detergent 3.3 mg/l. Meanwhile, Bambo media has the lowest effective in reducing the pollutant BOD5 66 mg/l, COD 167 mg/l, TSS 59 mg/l and Detergent 4.7 mg/l. In conclusion, the MBBR method can reduce pollutants according to Governor Regulation No. 72 of 2013.
Perencanaan Sistem Water Recycle Dalam Pengolahan Blowdown Cooling Tower dan Reject Water Reverse Osmosis Pada Industri Non-Woven di Sidoarjo Salsabila, Adinda Permata; Novirina Hendrasarie
Jurnal EnviScience (Environment Science) Vol. 9 No. 1 (2025): The Environment In Global Health Governance:An Analysis of Environment-Related
Publisher : Universitas Islam Lamongan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30736/jev.v9i1.811

Abstract

Pengolahan air limbah dari industri, khususnya air blowdown cooling tower dan reject water dari sistem reverse osmosis (RO), memiliki tantangan tersendiri dalam menjaga kualitas air yang layak digunakan kembali sebagai make-up water pada cooling tower. Perencanaan ini bertujuan untuk merancang strategi perencanaan sistem water recycle yang efektif dalam mengolah air blowdown dan reject water RO pada industri non-woven di Sidoarjo. Metode yang digunakan meliputi analisis karakteristik air inlet, evaluasi teknologi pengolahan yang sesuai, serta perancangan sistem daur ulang yang dapat menghasilkan air berkualitas tinggi untuk kebutuhan cooling tower. Dari hasil analisis perencanaan pengolahan limbah pada industri non-woven di Sidoarjo menunjukkan bahwa penggunaan kombinasi proses fisika, kimia, dan membran, seperti filtrasi multimedia, karbon aktif, softener, dan reverse osmosis, dapat meningkatkan efisiensi pengolahan dan kualitas air daur ulang. Selain itu, pengelolaan reject water dari proses RO menjadi aspek penting dalam mengurangi dampak lingkungan dan memastikan keberlanjutan sistem. Studi ini memberikan rekomendasi untuk implementasi sistem water recycle yang dapat mengurangi konsumsi air baku dan meningkatkan keberlanjutan operasional di industri non-woven.
Efektifitas Unit Intake, Aerasi, Pra-klorinasi, Koagulasi, Flokulasi di Instalasi Pengolahan Air (IPA) 2 Krian Mustika Sari, Devi; Novirina Hendrasarie
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

This study aims to evaluate the effectiveness of water treatment process units including intake, aeration, pre-chlorination, coagulation, and flocculation at the Krian 2 Water Treatment Plant (IPA). Each unit has an important role in ensuring the quality of raw water into clean water that meets standards. The evaluation was carried out using a quantitative descriptive approach, using primary and secondary data obtained from field observations and laboratory tests. The results showed that the intake unit functioned quite well in supplying raw water with a stable discharge. The aeration unit was able to increase dissolved oxygen levels and reduce iron (Fe) and manganese (Mn) levels. The disinfection process showed effectiveness in reducing the number of pathogenic microorganisms, although it was influenced by the dose and contact time. The coagulation and flocculation units worked effectively in reducing turbidity and suspended solids through the addition of coagulant chemicals, namely PAC. Overall, the processing units at IPA 2 Krian have shown quite good effectiveness in producing clean water, although there are several technical aspects that need to be optimized to increase process efficiency.
Efektivitas Unit Clarifier, Filtrasi, Desifeksi dan Reservoir di Instalasi Pengolahan Air ( IPA ) 2 Krian Nu'aimah, Zena; Novirina Hendrasarie
Jurnal Serambi Engineering Vol. 10 No. 3 (2025): Juli 2025
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

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Abstract

The Water Treatment Plant (WTP) 2 Krian plays a vital role in ensuring the quality of drinking water that meets health standards. This study aims to evaluate the effectiveness of the clarifier, filtration, disinfection and reservoir units in reducing raw water turbidity. A quantitative method was employed through direct field measurements using a turbidity meter, focusing on turbidity removal percentages (% removal) over the period of May 22–28, 2025. The results showed that the clarifier unit consistently achieved high turbidity removal efficiency, ranging from 97.72% to 98.72%. The filtration unit also demonstrated stable performance, with turbidity removal percentages between 59.65% and 72.41%. The final turbidity values were below 3 NTU, in complied with Indonesian Ministry of Health Regulation No. 2 of 2023. Collectively, the four units functioned effectively to support safe and potable water treatment. This evaluation serves as a critical basis for maintaining and improving the performance of the WTP to ensure sustainable clean water supply.
Co-Authors Andhika Pratama Andhika Andika Andika Aussie Amalia Ayu Candra Puspita Dinda Putri Sriweni Dwi Kurniawan Edison RP Ericke Nandita Maharani Evi Wahyu Ardhi Farhan Athallah Ajiputra Firra R Hidayatullah, Naura Hilda Dinda Octarika Irma Ilham Yadaturrahmah Kawista Arum Kinanti Mohammad Rio Panca Anugrah Indri Sriwulan Mustika Sari, Devi Nu'aimah, Zena Nurma Syitoh Raden H Kokoh Raden Kokoh Haryo Putro Rani Prihantini Risma Indah Salsabila Salsabila, Adinda Permata Santika Octaviana Putri Br Purba Sevila Rizki Damayanti