Pilot-scale study on the reverse osmosis treatment of oil sands tailings pond water: Impact of pretreatment on process performance

Loganathan, Kavithaa; Chelme-Ayala, Pamela; El-Din, Mohamed Gamal

doi:10.1016/j.desal.2014.12.045

Cited by 8 publications

(1 citation statement)

References 37 publications

(54 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some proprietary processes for industrial pure water treatment have been developed based on this principle of high pH RO operation [10,67]. For example, HERO TM implements a caustic injection to raise feed pH to 10-11 before it flows to the RO unit.…”

Section: Ro Operation At Alkaline Ph Conditionmentioning

confidence: 99%

Silica treatment technologies in reverse osmosis for industrial desalination: A review

Park

Yeon

Park

2020

Environmental Engineering Research

View full text Add to dashboard Cite

Reverse osmosis (RO) is the main process of current industrial desalination, and its performance is affected by the quality of water source. Natural water contains a certain level of silica, which is originated from metal silicate in the earth crust. Due to its complexity, silica fouling is difficult to control, which often causes less efficient design of RO system for safe operation. In the present work, we review the current state of silica treatment technology in RO desalination. Silica chemistry is investigated in standpoint of the scale formation mechanism among multiple forms of silica species and its synergistic interaction with other foulants such as organic matter. Then, pretreatment methods to remove silica in the RO feed water are outlined. They include softening/coagulation, seed precipitation/aggregation, tight ultrafiltration, ion exchange, adsorbents media, and electro coagulation. We finally highlight the mitigation of RO fouling under silica rich conditions, whose concept can be implemented in different ways of antiscalant dosing, high/low pH operation, and intermediate softening of the RO concentrate, respectively. This review will provide comprehensive information and insight about the optimal operation of industrial RO susceptible to silica fouling.

show abstract

Section: Ro Operation At Alkaline Ph Conditionmentioning

confidence: 99%