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41  Articles
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This paper discusses a study investigating students' opinions and reflections on backwash effects of portfolio assessments applied in Academic Writing course. To obtain the data, the researcher carried out interviews with 70 students of Eng... see more

The aim of this study is to examine the application of a low cost ceramic filter for the treatment of sand filter backwash water (SFBW). The treatment process is comprised of pre-coagulation of SFBW with aluminum sulfate (Alum) followed by continuous filt... see more

In this work, different backwash (BW) schemes were applied on identical hollow fiber (HF) membranes in a membrane bioreactor (MBR) treating municipal wastewater. The effect of BW duration (1 min, 3 min and 8 min) and water temperature (8 °C, 18 °C, 28 °C ... see more

Kualitas air baku untuk pengolahan air minum di PDAM kota Surabaya semakin menurun sehingga unit pengolahannya semakin berat bebannya. Teknologi membran banyak digunakan untuk meningkatkan kualitas air olahan dan mengurangi penggunaan bahan kimia yang seh... see more

PDAM Delta Tirta Kabupaten Sidoarjo selalu berupaya meningkatkan pelayanan terhadap pelanggannya yaitu dengan meningkatkan pengolahan air diberbagai instalasi. Instalasi yang digunakan dalam kajian penilitian ini yaitu Instalasi Pengolahan Air di Kedungul... see more

PDAM Surya Sembada Kota Surabaya berupaya untuk meningkatkan pelayanan hingga mencapai 100% dengan melakukan uprating pada IPAM Karangpilang III. Permasalahan yaitu penurunan kualitas efluen filter dan peningkatan frekuensi backwash pada unit filter dalam... see more

Backwash process of sand filters requests specific surface velocity to reach the recommended filter bed height expansion, however the expansion of the filter bed height is very influenced by their characteristics. This work had as aim to evaluate the effe... see more

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