Dampak Buangan Lumpur Panas Porong-Sidoarjo Terhadap Kualitas Air Kaliporong  

Oleh:

Tontowi ; Achmad, Firdaus ; Brahmana, Simon S.

Jenis: Article from Journal - ilmiah nasional - tidak terakreditasi DIKTI
Dalam koleksi: Jurnal Sumber Daya Air vol. 3 no. 4 (May 2007), page 9-18.
Topik: Water quality; Mud quality; River Porong

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: SS55 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

Lihat Detail Induk

Isi artikel

Since 29 May 2006, hot mud eruption has occured at Porong-Sidoarjo East Java. The inpact of hot mud eruption is the innudation of the human settlement, school, free way, paddy field and etc. which until 30 October 06 has covered an area of about 450 ha. Acording to yhe decree of the President on 27 September 2006, mud should be discharged into Kali Porong. The chemical and phisical characteristics of mud and its water are the high rate of salinity, conductivity, and phenol, with salinity 15.3-29.7%; conductivity 3360-76600 wmhos/cm. and concentrations of phenol 0,264-20.4 mg/L. The concentration of heavy metals is not too high: cadmium 0.011-0.125 mg/L; chromium hexa valent nd-0.118 mg/L. The BOD and COD of water are 50-75 mg/L and 100-150mg/L respectively. The impact of water and mud discharge into Kali POrong is decrease dissolved oxygen. In the contrary, turbidity, conductivity and salinity will decrease dramatically. The concentration of heavy metal as well as phenol showed no change. Before discharge of water, disvolved oxygen in Kali Porong along thr river from toll bridge to Tanjungjari varied in between 6.0-7.0 mg/L. After discharge of mud water, dissolved oxygen decrease significantly. In period of 15 to 30 september 2006 disvolved oxygen varied in between 2.7-6.7 mg/L, from 1 to 30 October 2006 1.0-4.2 mg/L and from 2 to 26 November 1.0-2.2 mg/L. The conductivity rate at toll bridge had increased from 4506 umhos/cm in September to 9688 in October 2006. In the same time salinity had increased from 2.4% 4.0%, and turbididity from 98 NTU to 488 NTU.

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