Process of geothermal water treatment by reverse osmosis. The research with antiscalants

2017 ◽  
Vol 73 ◽  
pp. 1-10 ◽  
Author(s):  
Barbara Tomaszewska ◽  
Mariola Rajca ◽  
Ewa Kmiecik ◽  
Michał Bodzek ◽  
Wiesław Bujakowski ◽  
...  
Keyword(s):  
Water Treatment ◽  
Reverse Osmosis ◽  
Geothermal Water

scholarly journals Microbial Fouling of a Reverse Osmosis Municipal Water Treatment System

2008 ◽  
Vol 80 (8) ◽  
pp. 703-707 ◽  
Author(s):  
Steven J. Wright ◽  
Jeremy D. Semrau ◽  
David R. Keeney
Keyword(s):  
Water Treatment ◽  
Reverse Osmosis ◽  
Treatment System ◽  
Water Treatment System ◽  
Municipal Water

scholarly journals Perencanaan Sistem Pemanfaatan Air Hujan sebagai Air Siap Minum di Kantor Dinas Pendidikan Provinsi DKI Jakarta

2020 ◽  
Vol 22 (2) ◽  
pp. 139-148
Author(s):  
Ilham Tri Purnomo ◽  
M. Zaky Alfarisi ◽  
Mutioro Sukmono
Keyword(s):  
Water Treatment ◽  
Reverse Osmosis ◽  
Green Building ◽  
Water Tank ◽  
Raw Water

Curah hujan yang tinggi di Jakarta merupakan potensi yang luar biasa dan perlu dimanfaatkan. Pemanfaatan air hujan menjadi air siap minum di Gedung Dinas Pendidikan Provinsi DKI Jakarta merupakan sebuah terobosan penerapan konsep bangunan green building di daerah Ibukota DKI Jakarta. Perencanaan diawali dengan menghitung kebutuhan air minum untuk karyawan di kantor dengan kebutuhan air minum sebanyak 480 liter/hari atau 132.480 liter/tahun. Air hujan difilter dua kali untuk memenuhi standar air minum, sehingga air dapat dikonsumsi. Eksisting raw water tank digunakan untuk menampung air baku hasil filter awal (pretreatment). Sistem pengaliran airnya menggunakan sistem gabungan, air dipompakan dari bak penampung menuju rooftank atau reservoir dengan kapasitas volume sebesar 2550 m3, kemudian air didistribusikan ke lokasi tempat air minum. Pemilihan filter akhir (treatment) dipilih dari perbandingan antara sistem reverses osmosis, sistem depot air minum, dengan sistem dispenser (galon) dan dihasilkan metode reverse osmosis lebih baik dari segi kualitas air serta menguntungkan dari segi ekonomis. Pada tahun ke-2 modal awal yang telah dikeluarkan pada tahun pertama telah kembali. Kemudian pada tahun berikutnya penghematan biaya meningkat. Dibutuhkan biaya keseluruhan pelaksanaan sebesar Rp. 496.636.000,00. Kata Kunci: air hujan, air siap minum, reverse osmosis, water treatment

Molecular dynamics study on the elucidation of polyamide membrane fouling by nonionic surfactants and disaccharides

2021 ◽  
Vol 23 (36) ◽  
pp. 20313-20322 ◽  
Author(s):  
Yuki Kawabata ◽  
Ralph Rolly Gonzales ◽  
Keizo Nakagawa ◽  
Takuji Shintani ◽  
Hideto Matsuyama ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Membrane Fouling ◽  
Energy Efficient ◽  
Nonionic Surfactants ◽  
Separation Technology ◽  
Efficient Separation ◽  
Polyamide Membrane

Reverse osmosis (RO) is a widely used energy-efficient separation technology for water treatment.

Nanofiltration and reverse osmosis biostability relative to alternative methods of water treatment

2007 ◽  
Vol 56 (1) ◽  
pp. 25-40 ◽  
Author(s):  
Suibing Liu ◽  
Michael LePuil ◽  
J. S. Taylor ◽  
A. A. Randall
Keyword(s):  
Water Treatment ◽  
Reverse Osmosis ◽  
Alternative Methods

Chemical monitoring strategy for the assessment of advanced water treatment plant performance

2010 ◽  
Vol 10 (6) ◽  
pp. 961-968 ◽  
Author(s):  
J. E. Drewes ◽  
J. A. McDonald ◽  
T. Trinh ◽  
M. V. Storey ◽  
S. J. Khan
Keyword(s):  
Water Quality ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Pilot Plant ◽  
Monitoring Program ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Pilot Scale ◽  
Chemical Monitoring ◽  
Plant Operation

A pilot-scale plant was employed to validate the performance of a proposed full-scale advanced water treatment plant (AWTP) in Sydney, Australia. The primary aim of this study was to develop a chemical monitoring program that can demonstrate proper plant operation resulting in the removal of priority chemical constituents in the product water. The feed water quality to the pilot plant was tertiary-treated effluent from a wastewater treatment plant. The unit processes of the AWTP were comprised of an integrated membrane system (ultrafiltration, reverse osmosis) followed by final chlorination generating a water quality that does not present a source of human or environmental health concern. The chemical monitoring program was undertaken over 6 weeks during pilot plant operation and involved the quantitative analysis of pharmaceuticals and personal care products, steroidal hormones, industrial chemicals, pesticides, N-nitrosamines and halomethanes. The first phase consisted of baseline monitoring of target compounds to quantify influent concentrations in feed waters to the plant. This was followed by a period of validation monitoring utilising indicator chemicals and surrogate measures suitable to assess proper process performance at various stages of the AWTP. This effort was supported by challenge testing experiments to further validate removal of a series of indicator chemicals by reverse osmosis. This pilot-scale study demonstrated a simplified analytical approach that can be employed to assure proper operation of advanced water treatment processes and the absence of trace organic chemicals.

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