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Licensed Unlicensed Requires Authentication Published by De Gruyter June 16, 2016

Process Simulation for Removing Impurities From Wastewater Using Sour Water 2-Strippers system via Aspen Hysys

Bahador Nabgan, Tuan Amran Tuan Abdullah, Walid Nabgan, Arshad Ahmad, Ibrahim Saeh and Kamal Moghadamian

Abstract

In this paper, Aspen Hysys v8.8 was used to simulate two strippers for sour water stripping process as the aim for removal of chemical impurities such as hydrogen sulfide, carbon dioxide and ammonia in wastewater. As a result of elimination of these impurities, the water can be reused. Comparison between single and two strippers and elevating the stripping efficiency was the objectives of the present study. The feed flow rate and compositions were specified according to the typical Chevron WWT process conditions. The simulation result shows that 100 % ammonia was stripped into the two stripper system but only 24 % stripped in the single stripper system. The result of H2O was almost same in both systems. The stripped water collected via the bottom of the Ammonia Stripper contains less than 10 ppm of hydrogen sulphide and less than 50 ppm of ammonia.

Funding source: University Of Edinburgh

Award Identifier / Grant number: 10H19

Funding statement: The authors acknowledge the financial support given for this work by Universiti Teknologi Malaysia under the Research University Grant (vot. 10H19) and Malaysia of Higher Education FRGS (vot. 4F478).

Acronyms list

WWT

Waste water treatment

FCCs

Fluid catalytic crackers

BET

Biological Effluent Treatment system

HCO3

Bicarbonate

H3O+

Hydronium

OH

Hydroxide

HS

Bisulfide

CL

Chloride

CO3–2

Carbonate

NA+

Sodium

CH4

Methane

NH4+

Ammonium

NaOH

Sodium-Hydroxide

HCL

Hydrogen-Chloride

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Received: 2016-3-16
Revised: 2016-5-28
Accepted: 2016-5-28
Published Online: 2016-6-16
Published in Print: 2016-12-1

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