Abstract
Rapid development in a watershed affects surface and ground water sources. Urbanization results in increased environmental pollution and groundwater pollution. Best water resource management practices are Low Impact Development (LID) such as bioretention, vegetative swales, permeable pavements, and rainwater wetlands have been implemented to reduce the adverse effects of urbanization such as flooding by reducing peak runoff on the surface and thereby managing rainwater runoff. The purpose of this study was to analyze microbial contamination in wastewater originating from city drainage channels. The research was carried out experimentally by taking water in Item River, Kemayoran directly and put it in an electric bioretention tank. The rain-wastewater-bioretention (RWB) tank is in the form of a watertight tank measuring 60 cm in diameter by 80 cm in height with a medium of 50 cm, leaving 30 cm to provide space and time for standing water during infiltration time. The results of the water taken on the 2nd day through Bioretention carried out laboratory testing with the scope of Microbiological analysis of Environmental Health Quality Standards, Escherichia coli levels decreased from 17 APM/100 ml to 9 APM/100 ml. In addition, total Coliform levels from 2800 APM/100 ml to 270 APM/100 ml.
Highlights
ABSTRAK Perkembangan yang pesat di suatu daerah aliran sungai (DAS) mempengaruhi sumber air permukaan dan air tanah
Best water resource management practices are Low Impact Development (LID) such as bioretention, vegetative swales, permeable pavements, and rainwater wetlands have been implemented to reduce the adverse effects of urbanization such as flooding by reducing peak runoff on the surface and thereby managing rainwater runoff
The rainwastewater-bioretention (RWB) tank is in the form of a watertight tank measuring 60 cm in diameter by 80 cm in height with a medium of 50 cm, leaving 30 cm to provide space and time for standing water during infiltration time
Summary
Bumi menyimpan cadangan air hingga 80%, 97% nya adalah air asin dan hanya sekitar 3% air tawar yang dapat digunakan manusia. Bioretensi merupakan legokan/cekungan dangkal yang terdiri dari beberapa lapisan media dimana air limpasan ditangkap, dimana proses fisik, kimia dan biologi digunakan untuk menghilangkan polutan. Hal ini menunjukkan bahwa bioretensi memiliki kapasitas untuk mempertahankan hidrologi prapembangunan di daerah perkotaan, dan dengan menjaga limpasan sarat polutan sebelum memasuki saluran pembuangan, mengurangi tekanan pada infrastruktur air yang ada [10]. Maksud dari penelitian ini adalah untuk membuat sistem Bioretensi yang dapat memberikan alternatif pemecahan dalam memperbaharui kualitas air permukaan khususnya yang berasal dari drainase kota. Sedangkan pada penelitian kali ini dilakukan pengujian air melalui laboratorium dengan analisis mikrobiologi yang sangat penting peranannya dalam penentuan standar air bersih. Kedalaman media tanam filtrasi pada tangki Bioretensi adalah kurang lebih 50 cm, menyisakan 30 cm untuk memberikan tempat dan waktu bagi genangan air selama waktu infiltrasi/penyerapan. Mikroorganisme ini merupakan indikator yang baik, terutama karena mudah diidentifikasi dan dihitung [17]
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