scholarly journals Whole Effluent Toxicity (WET) Test in Industrial Effluent Management: Toxicity Reduction Evaluations in Chemical Industry

2015 ◽  
Vol 25 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Keiko TOMIKAWA ◽  
Toshiyuki IRIE ◽  
Hiromi UCHIDA ◽  
Haruna WATANABE ◽  
Norihisa TATARAZAKO
Keyword(s):  
Chemical Industry ◽  
Industrial Effluent ◽  
Whole Effluent Toxicity ◽  
Toxicity Reduction ◽  
Effluent Toxicity

Whole effluent toxicity reduction by ozone

1997 ◽  
Vol 16 (2) ◽  
pp. 121-124 ◽  
Author(s):  
Brandon R. Ball ◽  
Kevin V. Brix ◽  
Mary Sue Brancato ◽  
Mick P. Allison ◽  
Shaundelle M. Vail
Keyword(s):  
Whole Effluent Toxicity ◽  
Toxicity Reduction ◽  
Effluent Toxicity

scholarly journals Pengujian Toksisitas Lindi Instalasi Pengolahan Lindi TPA Piyungan pada Daphnia sp. dengan Whole Effluent Toxicity

2020 ◽  
Vol 18 (2) ◽  
pp. 297-304
Author(s):  
Ika Bayu Kartikasari ◽  
M Widyastuti ◽  
Suwarno Hadisusanto
Keyword(s):  
Acute Toxicity ◽  
Toxic Unit ◽  
Whole Effluent Toxicity ◽  
Effluent Toxicity ◽  
Very High

Lindi adalah rembesan yang melalui tumpukan sampah hasil endapan yang berada di bawah landfill yang terakumulasi yang terdiri dari bahan organik dan anorganik. Lindi hasil pengolahan IPL TPA Piyungan masih memiliki potensi pencemaran lindi menjadi permasalahan yang masih memiliki nilai toksisitas yang tinggi. Perlu adanya pengukuran toksisitas untuk mengetahui pengaruh pencemaran lindi terhadap lingkungan. Penelitian ini bertujuan untuk: (1) melakukan analisis efektivitas hasil pengolahan lindi di IPL TPA Piyungan, dan (2) melakukan pengujian toksisitas akut dengan WET (Whole Effluent Toxicity) menggunakan Daphnia sp. pada pengolahan lindi. Metode penelitian yang digunakan dalam penelitian ini yakni melakukan uji laboratorium pada parameter pengolahan lindi yang disesuaikan dengan permen LHK No. 59 tahun 2016 untuk pengukuran efektivitas pengolahan lindi, uji LC50 untuk mengetahui tingkat tokisitas akut pada influen dan efluen pengolahan lindi. proses pengolahan lindi TPA Piyungan terdiri dari Kolam Sedimentasi, Aerasi, dan Desinfeksi. Hasil dari penelitian ini menunjukkan bahwa (1) Efektivitas pengolahan lindi TPA Piyungan pada parameter berturut-turut TSS 56 %; BOD 82 %; COD 0 %; TN 41,67%; dan Hg 14 %. Hasil efektivitas pengolahan lindi tersebut tidak mempengaruhi peningkatan perbaikan kualitas lindi yang disesuaikan Peraturan Menteri LHK No 59/Menlhk/Setjen/Kum.1/7/2016 masih melebihi baku mutu yang telah ditetapkan kecuali parameter BOD, (2) Toksisitas lindi TPA Piyungan dikategorikan Very High Acute Toxicity pada influen dan High Acute Toxicity efluen IPL Piyungan. Kematian 50% populasi daphnia untuk contoh uji influen IPL Piyungan sebesar 0,482% dengan Toxic Unit acute (TUa) sebesar 203,33. Contoh uji efluen IPL Piyungan sebesar 2,752% dengan Toxic Unit acute (TUa) sebesar 36,33.

Toxicity Identification and Reduction Evaluation in Petrochemical Effluents – SITEL Case

1992 ◽  
Vol 25 (3) ◽  
pp. 73-84 ◽  
Author(s):  
A. Brandelli ◽  
M. L. Baldasso ◽  
E. P. Goettems
Keyword(s):  
Aquatic Toxicity ◽  
Pimephales Promelas ◽  
Industrial Effluent ◽  
Liquid Waste ◽  
Toxicity Testing ◽  
Treatment System ◽  
Dissolved Air Flotation ◽  
Industrial Plants ◽  
Toxicity Reduction ◽  
Toxicity Identification

SITEL, Integrated Wastewater Treatment System of South Petrochemical Complex,has been processing liquid waste from this industrial area since November, 1982. The complex consists of an olefins plant and some second-generation plants that produce mainly thermoplastic resins. The raw industrial effluent is segregated in the plants in two main streams: organic and inorganic. The organic treatment consists of water-oil separator, equalization basin and dissolved air flotation (primary treatment), activated sludge and multi-media filters (secondary treatment) and stabilization ponds (tertiary treatment). The final effluent is applied on land by perforated PVC pipelines and sprinklers. In 1986, an aquatic toxicity test laboratory was implemented. It uses fish (Pimephales promelas) and crustaceans (Daphnia similis), according to methodology reported by EPA. A three-step protocol has been developed to characterize the whole effluent toxicity reduction in a, treatment system as well as to identify the sources of toxicity in industrial plants. The first step consists of toxicity identification and characterization of effluents at several monitoring points of SITEL. After analysing the results of the first step, it is possible to evaluate the toxicity reduction obtained by the treatment system and environmental toxicity evaluation. The second step consists of identification of the sources of toxicity in industrial plants through comparative study of organic and inorganic effluents of the complex, prioritizing the most toxic effluents. The last step consists of a toxic fraction identification, based on sequential physico/chemical fractionations of the effluent with associated toxicity testing using aquatic organisms. This paper presents the results that have been obtained so far and a previous evaluation of the main contributors for the toxicity of the effluents.

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