Studi dinamika kebutuhan oksigen kimia dan oksigen trlarut pada air zamza dan air minum kemasan dalam keadaan terbuka

Jannah, Tisa Roaitul (2018) Studi dinamika kebutuhan oksigen kimia dan oksigen trlarut pada air zamza dan air minum kemasan dalam keadaan terbuka. Diploma thesis, UIN Sunan Gunung Djati Bandung.

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Abstract

Air Zamzam merupakan air yang dapat diminum secara langsung tanpa pengolahan terlebih dahulu. Tujuan dari penelitian ini adalah untuk mempelajari kebutuhan oksigen kimia dan oksigen terlarut pada air Zamzam serta membandingkannya dengan Air Minum Dalam Kemasan (AMDK). Hasil penelitian menunjukkan air Zamzam memiliki nilai kebutuhan oksigen terlarut atau Chemical Oxygen Demand (COD) lebih rendah dan stabil sampai hari ke-50 meskipun dibiarkan dalam keadaan terbuka. AMDK 1 mengalami kenaikan kadar COD pada hari ke-50, sedangkan AMDK 2 dan AMDK 3 mengalami kenaikan kadar COD pada hari ke-30 sedangkan air isi ulang mengalami kenaikan kadar COD dari hari pertama penyimpanan. Untuk kadar Disolved Oksygen (DO) berbanding terbalik dengan kadar COD, ketika kadar COD naik maka kadar DO mengalami penurunan. Air Zamzam memiliki kadar fluorida yang lebih tinggi yaitu 0,56 mg/L sehingga kemungkinan ini yang menyebabkan air Zamzam tidak mengalami kenaikan COD. Kenaikan COD dan penurunan DO tidak berpengaruh pada nilai pH air terbukti dari hari petama penyimpanan sampai hari ke-50 pH sampel tidak banyak berubah. Kualitas air Zamzam dapat diterima berdasarkan Permenkes RI 492, SASO dan WHO. Zamzam water is water that can be drunk directly without processing it first. The purpose of this research was to study the need for chemical oxygen Demand and dissolved oxygen in Zamzam water and compare it with bottled drinking water (AMDK). The results showed that Zamzam water had a lower and stable in Chemical Oxygen Demand (COD) value until the 50th day even though it was left open. AMDK 1 has increased COD levels on day 50th, while AMDK 2 and AMDK 3 have increased COD levels on day 30th while refill water has increased COD levels from the first day of storage. For Dysolved Oxygen (DO) levels inversely proportional to COD levels, when COD levels rise, DO levels decrease. Zamzam water has a higher fluoride level so this possibility causes Zamzam water not to increase COD. The increase in COD and decrease in DO had no effect on the pH value of water as evidenced from the day of storage until the 50th day the pH of the sample did not change much. Zamzam water quality can be accepted based on RI Minister of Health Regulation 492, SASO and WHO.

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