Optimum design of sedimentation tanks based on setting characteristics of Karachi tannery wastes

Akhtar, Waseem; Rauf, Muhammad; Ali, Imran; Nayeemuddin,

doi:10.1007/bf02047034

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…After receiving huge flux of waste water containing toxic chemical including heavy metals Nullah Aik drains into river Chenab (Mohtadullah et al 1992;Mehdi 2005). This large volume of industrial and urban waste is considered major threat to aquatic ecosystem of the study area (Akhtar et al 1997;Nation Daily 2002, Nov. 4). …”

Section: Study Areamentioning

confidence: 99%

Spatio-temporal variations in water quality of Nullah Aik-tributary of the river Chenab, Pakistan

Qadir

Malik

Husain

2007

Environ Monit Assess

261

184

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This study reports the spatio-temporal changes in water quality of Nullah Aik, tributary of the Chenab River, Pakistan. Stream water samples were collected at seven sampling sites on seasonal basis from September 2004 to April 2006 and were analyzed for 24 water quality parameters. Most significant parameters which contributed in spatio-temporal variations were assessed by statistical techniques such as Hierarchical Agglomerative Cluster Analysis (HACA), Factor Analysis/Principal Components Analysis (FA/PCA), and Discriminant Function Analysis (DFA). HACA identified three different classes of sites: Relatively Unimpaired, Impaired and Less Impaired Regions on the basis of similarity among different physicochemical characteristics and pollutant level between the sampling sites. DFA produced the best results for identification of main variables for temporal and spatial analysis and separated eight parameters (DO, hardness, sulphides, K, Fe, Pb, Cr and Zn) that accounted 89.7% of total variations of spatial analysis. Temporal analysis using DFA separated six parameters (E.C., TDS, salinity, hardness, chlorides and Pb) that showed more than 84.6% of total temporal variation. FA/PCA identified six significant factors (sources) which were responsible for major variations in water quality dataset of Nullah Aik. The results signify that parameters identified by statistical analyses were responsible for water quality change and suggest the possibility of industrial, municipal and agricultural runoff, parent rock material contamination. The results suggest dire need for proper management measures to restore the water quality of this tributary for a healthy and promising aquatic ecosystem and also highlights its importance for objective ecological policy and decision making process.

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Section: Study Areamentioning

confidence: 99%

Spatio-temporal variations in water quality of Nullah Aik-tributary of the river Chenab, Pakistan

Qadir

Malik

Husain

2007

Environ Monit Assess

261

184

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“…diketahui bahwa nilai TDS rata-rata mengalami penurunan pada dosis 130 ppm dan mengalami kenaikan kembali pada dosis 190 ppm, dan pada koagulan campuran rata rata nilai TDS mengalami penurunan pada dosis 100:30 dan mengalami kenaikan yang cukup tinggi pada dosis 40:90 ppm, penyebab kenaikan nilai TDS adalah banyaknya padatan terlarut yang terkandung dalam larutan tersebut. Menurut Akhtar, dkk [10]. naiknya kembali kadar TDS diakibatkan oleh restabilisasi partikel koloid akibat dari dosis yang berlebih.…”

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Pemanfaatan Lumpur Aktif Sebagai Koagulan Di Unit Water Treatment PPSDM Migas Cepu

Khoiro

Fahmia

Takwanto

et al. 2023

Distilat: J. Tekn. Sep

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Air Sungai Bengawan Solo digunakan sebagai bahan baku dalam pengolahan water treatment di PPSDM Migas Cepu. Dalam pengolahannya menghasilkan limbah berupa lumpur endapan yang telah tercampur dengan koagulan yang akan dibuang kembali ke Sungai Bengawan Solo. Hal ini menyebabkan pencemaran lingkungan dan kerusakan ekosistem yang berada di sungai. Penelitian pemanfaatan lumpur aktif sebagai koagulan dilakukan untuk mencegah adanya kerusakan ekosistem akibat pembuangan lumpur endapan hasil pengolahan serta mengurangi penggunaan koagulan dengan memanfaatkan koagulan yang masih aktif dalam lumpur endapan. Percobaan ini mengguanakan metode jar tes dengan rasio dosis koagulan 70 ppm, 100 ppm, 130 ppm, 160 ppm dan 190 ppm ,dosis flokulan 0,5 ppm. Kemudian dilakukan pengadukan cepat 120 rpm selama 1 menit dan dilanjutkan pengadukan lambat 60 rpm selama 30 detik. Selanjutnya dilakukan aerasi selama 30 detik dan yang terakhir sedimentasi selama 30 menit dengan parameter yang akan diamati berupa kekeruhan, angka KMnO4, pH dan TDS. Hasil penelitian menunjukkan dosis koagulan optimum diperoleh pada dosis 130 ppm pada campuran tawas+lumpur+PAC dengan perbandingan dosis 70:20:40. Koagulan PAC terbukti lebih efektif dibandingkan dengan koagulan yang lain untuk pengolahan air minum di unit WT PPSDM migas dengan nilai kekeruhan = 213 NTU, pH 7,3, angka KMnO4 = 7,869 mg/l dan TDS = 23 mg/l.

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Assessment of heavy metals and metalloids in tissues of two frog species: Rana tigrina and Euphlyctis cyanophlyctis from industrial city Sialkot, Pakistan

Qureshi

Kashif

Hashmi

et al. 2015

Environ Sci Pollut Res

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In the present study, we investigated the concentrations of Ni, Fe, Pb, Cu, Co, Zn, Cd, Mn, and Cr in selected body tissues (liver, stomach, kidney, heart, lungs, and skeletal muscles) of two frog species: Rana tigrina and Euphlyctis cyanophlyctis captured from industrial wastewater of Sialkot city known worldwide for its tanning industry. The both frog species had darker appearance, distinctively different wet body weight, and snout-vent length. The results revealed that the heavy metal concentrations were high in the samples collected from industrial sites as compared to non-industrial sites. The different tissues of R. tigrina and E. cyanophlyctis exhibited little significant differences from two sites. The concentrations of heavy metals were more in tissues of R. tigrina as compared to E. cyanophlyctis. Mean concentration of Cd, Fe, Ni, Mn, Cu, and Cr was comparatively greater in R. tigrina, whereas Pb and Co were higher in E. cyanophlyctis. The concentration of Cu and Cd in the liver and kidney were relatively more in both species as compared to other organs. Further, the results indicated that frogs collected from industrial sites showed decreased body length and weight, and greater metal accumulation. The results will help the authorities for the conservation of these frog species which are under the influence of heavy metal contamination.

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Optimum design of sedimentation tanks based on setting characteristics of Karachi tannery wastes

Cited by 5 publications

References 2 publications

Spatio-temporal variations in water quality of Nullah Aik-tributary of the river Chenab, Pakistan

Spatio-temporal variations in water quality of Nullah Aik-tributary of the river Chenab, Pakistan

Pemanfaatan Lumpur Aktif Sebagai Koagulan Di Unit Water Treatment PPSDM Migas Cepu

Assessment of heavy metals and metalloids in tissues of two frog species: Rana tigrina and Euphlyctis cyanophlyctis from industrial city Sialkot, Pakistan

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