Studi Pengolahan Limbah Cair Laundry menggunakan Serbuk Biji Asam Jawa sebagai Biokoagulan

Abstract

Abstrak
 Banyaknya usaha laundry yang membuang limbahnya secara langsung ke lingkungan sehingga mencemari badan air. Pemanfaatan biokoagulan seperti biji asam jawa dapat menjadi salah satu alternatif pengolahan air limbah. Penelitian ini bertujuan untuk mengetahui pengaruh serbuk biji asam jawa dalam menurunkan kontaminan COD, TSS, fosfat dan minyak lemak pada limbah cair laundry Taman Sentosa, Kecamatan Cikarang Selatan, Kabupaten Bekasi, Jawa Barat. Metode yang digunakan adalah eksperimen laboratorium meggunakan prinsip flokulasi koagulasi. Pada penelitian ini digunakan variasi dosis koagulan 1500 mg/L; 2500 mg/L; 3000 mg/L; 3500 mg/L dan 4000 mg/L. Hasil penelitian sebelum penambahan koagulan adalah kadar COD sebesar 3.160 mg/L, kadar TSS sebesar 703 mg/L, kadar fosfat sebesar 4,20 mg/L dan kadar minyak lemak sebesar 25,25 mg/L. Setelah penambahan koagulan serbuk biji asam jawa mampu menurunkan kadar COD dengan efisiensi penyisihan sebesar 30,75%. Sedangkan efisiensi serbuk biji asam jawa dalam menurunkan TSS sebesar -7,26%, fosfat sebesar -2,38% dan minyak dan lemak sebesar -596,63%. Berdasarkan hasil tersebut maka serbuk biji asam jawa tidak efektif untuk menurunkan kadar COD, TSS, fosfat dan minyak lemak karena belum mampu memenuhi baku mutu buangan limbah industri laundry.
 Abstract
 Many laundry businesses dispose of their waste directly into the environment, thus polluting water bodies. The use of biocoagulants such as tamarind seeds can be an alternative for wastewater treatment. This study aims to determine the effect of tamarind seed powder in reducing contaminants of COD, TSS, phosphate and fatty oil in Sentosa Park laundry wastewater, Cikarang Selatan District, Bekasi Regency, West Java. The method used is a laboratory experiment using the principle of coagulation flocculation. This study used a coagulant dose variation of 1500 mg / L; 2500 mg / L; 3000 mg / L; 3500 mg / L and 4000 mg / L. The results of the study before the addition of coagulants were COD levels of 3.160 mg / L, TSS levels of 703 mg / L, phosphate levels of 4.20 mg / L and fatty oil content of 25.25 mg / L. After the addition of coagulant tamarind seed powder, it was able to reduce COD levels with a removal efficiency of 30.75%. Meanwhile, the efficiency of tamarind seed powder in reducing TSS was -7.26%, phosphate was -2.38% and oil and fat was -596.63%. Based on these results, tamarind seed powder is not effective in reducing levels of COD, TSS, phosphate and fatty oil because it has not been able to meet the quality standards of industrial laundry waste disposal.

Greywater Flow Characteristics for Closed Channel Maintenance

“…These differences are caused by the nature and composition of the waste source, namely environmental conditions, climate, activities of the community, and other factors. The results of this study also show compatibility with previous research by Shaikh et al (2020) [7], Khotimah et al (2021) [8], Suryo Purnomo an Wijayanti (2021) [9], Pambudi et al (2021) [9] and Nurhidayanti, et al (2021)[11], where their research results show different parameter values for the same wastewater sample source.…”

“…The characteristics of liquid waste are odor, temperature, density, color, turbidity, total suspended solids (TSS), total dissolved solids (TDS), kinematic viscosity, biochemical oxygen demand (BOD), chemical oxygen demand (COD), and so on [1]. The characteristics of greywater are uncertain because the activity influences them, the amount of water used, and the climate or weather in a country [7][8][9][10][11]. Because of this uncertainty, a country should have a database of greywater effluent characteristics in order to obtain the correct handling and processing methods [7,8].…”

Penurunan Kadar Surfaktan, Nitrogen Dan Phospat Air Limbah Domestik Dengan Eco Enzim

“…Para peneliti menggambarkan eco enzim sebagai zat organik kompleks protein rantai pendek, garam mineral dan hormon dan juga diklaim bahwasanya eco enzim berfungsi untuk menguraikan, mengubah serta mengkatalisis reaksi [17]. Limbah kulit dan buah sebagai bahan baku yang berbeda akan menghasilkan fungsi enzim yang berbeda, dan dalam konsentrasi yang berbeda [18].…”

Utilization of Can Waste as PAC Coagulant and Alum to Remove Turbidity

“…Processing this waste is still simple and usually only uses absorption wells (Yuliana et al, 2020). Several studies show that the use of coagulants can help process laundry waste (Hak et al, 2018;Hermida et al, 2023). Therefore, this research will focus on the effectiveness of synthetic coagulants from used cans in reducing turbidity in laundry wastewater.…”