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All Journal Media Ilmiah Teknik Lingkungan Envirous
Arohmah, Nicken Elok
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Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Industrial & Manufacturing Engineering Public Health

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Penurunan Konsentrasi COD Limbah Cair Industri Batik Jetis Pada Proses Aklimatisasi Menggunakan Mikroorganisme Bacillus Sp. Arohmah, Nicken Elok; Rachmanto, Tuhu Agung
Envirous Vol. 3 No. 2 (2023): Jurnal Envirous
Publisher : UPN "Veteran" Jawa Timur

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33005/envirous.v3i2.20

Abstract

Proses pewarnaan kain batik menyebabkan tingginya kadar senyawa organik pada air limbah batik. Senyawa organik yang tinggi dapat ditunjukkan oleh nilai COD. Baku mutu nilai COD air limbah industri batik pada Peraturan Gubernur Jawa Timur Nomor 72 Tahun 2013 tentang baku mutu air limbah bagi industri tekstil sebesar 150 mg/l dan rentang pH yang diperbolehkan adalah 6-9. Sehingga diperlukan adanya pengolahan air limbah batik sebelum dibuang ke badan air. Salah satu pengolahan biologis yang dapat digunakan adalah lumpur aktif. Berdasarkan latar belakang di atas, tujuan dari penelitian ini yaitu untuk mengetahui penurunan konsentrasi COD pada proses aklimatisasi pengolahan air limbah industri batik Jetis. Penelitian ini dilakukan dengan sistem batch dengan variasi jenis bakteri, konsentrasi substrat dan pH yang berbeda beda. Parameter yang dianalisis adalah COD. Dari penelitian ini didapatkan hasil efisiensi penyisihan tertinggi terjadi pada konsentrasi substrat 100% pH 7. Hal itu disebabkan oleh adanya pengaruh nilai pH optimum untuk pertumbuhan bakteri dan jumlah susbtrat.
Utilization of Treated Wastewater from the Ready-Mix Concrete Industry for Road Spraying: Pemanfaatan Air Limbah Terolah dari Industri Beton Ready Mix untuk Penyiraman Jalan Rosyadah, Sabrina Haifa; Putro, Raden Kokoh Haryo; Arohmah, Nicken Elok
Media Ilmiah Teknik Lingkungan (MITL) Vol. 10 No. 1 (2025): Media Ilmiah Teknik Lingkungan (MITL)
Publisher : ​Institute for Researches and Community Services Universitas Muhammadiyah Palangkaraya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33084/mitl.v10i1.9870

Abstract

The ready-mix concrete industry plays a crucial role in supplying concrete for various construction purposes. During its production and operational processes, this industry generates wastewater from laboratory activities, mixer van washing, and truck mixer cleaning. The generated wastewater is treated and planned to be reused for road spraying within the industrial area. This paper aims to analyze the characteristics of the generated wastewater and its potential impact on roads, and evaluate the efficiency of its reuse. The total volume of treated wastewater produced is 11.88 m³/day, containing parameters such as pH, TSS, Cl⁻, and SO₄²⁻. Based on the water quality measurements, the treated wastewater meets the quality standards set by the Ministry of Environment and Forestry for pH and TSS, and by Government Regulation No. 22 of 2021 for chloride and sulfate. Therefore, the wastewater is considered suitable for road spraying. The efficiency of using treated wastewater for this purpose reaches 43% during the dry season and 86% during the rainy season.
Co-Authors Rachmanto, Tuhu Agung Raden Kokoh Haryo Putro Rosyadah, Sabrina Haifa