Self-Purification Performance Of Brantas River In East Java From Ammonia Deoxygenation Rate

Hendriarianti, Evy and Kustamar, Kustamar and Sudiro, Sudiro and Wulandari, Ardini (2018) Self-Purification Performance Of Brantas River In East Java From Ammonia Deoxygenation Rate. International Journal of Civil Engineering and Technology (IJCIET), 9 (1). pp. 95-101. ISSN 0976-6316

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Abstract

Naturally the river has the ability to recover from pollutants. The ability of river self recovery is a complex process from the dynamics of dissolved oxygen (DO). DO concentrations in river are influenced by atmospheric reaeration processes, respiration and photosynthesis of algae, oxidation of organic carbon, nitrogen and SOD. Nitrogen oxidation is known as the nitrification process which consists of oxidation of Ammonia in the beginning and subsequent Nitrite oxidation. Both of these nitrification processes have two-way reactions that produce hydroxyl ions. The more hydroxyl ions will shift the equilibrium of the reaction to the left, which causes the formation of higher ammonia. In an effort to control river pollution with mathematical modeling, information on river deoxygenation values is needed, one of which is the ammonia oxidation process. During this time the value of ammonia deoxygenation was taken from other studies and literature which took a long time in the model calibration process. The calibration process will be faster when using the primary data of modeled river. So the purpose of this study is to determine the rate of ammonia deoxygenation. The method of determining the Ammonia deoxygenation rate using the Thomas method is a statistical method using long-term Ammonia analysis data for 1 -30 days with a time interval of 1, 2, 3, 4, 5, 15, 20, 25, 30 days. Determination of the sampling point using the monitoring point of Jasa Tirta I Company as the manager of the Brantas river. River water quality sampling using the SNI 6989.57: 2008 method Sampling Method of Surface Water. Ammonia analysis uses spectrophotometric method. The results showed that the content of the Brantas Ammonia in the range 0 -0.278 mg / L. While the results of determining the Ammonia deoxygenation rate ranged from 0.034 to 0.120 / day. This Brantas river deoxygenation level shows the performance of the ammonia oxidation process carried out by AOA and AOB. From the value of the Ammonia deoxygenation rate, it is known that the Brantas river from upstream to downstream has self-purification from Ammonia pollutants.

Item Type:	Article
Uncontrolled Keywords:	ammonia, deoksigenation rate, BOD, Thomas method, self purification
Subjects:	Engineering > Environmental Engineering
Divisions:	Fakultas teknik Sipil dan Perencanaan > Teknik Lingkungan S1
Depositing User:	mr yudi yudi
Date Deposited:	07 Apr 2021 03:23
Last Modified:	07 Dec 2021 04:49
URI:	http://eprints.itn.ac.id/id/eprint/5265

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