Comparative study between the performance of NF and RO membranes in desalination of saline water

العناوين الأخرى

دراسة مقارنة بين أداء النانو فلتر و التناضح العكسي في تحلية المياه شديدة الملوحة

مقدم أطروحة جامعية

Abu Asi, Diya Anwar Fahmi

مشرف أطروحة جامعية

Rabah, Fahd Khidr
al-Mughair, Yunus Khalil

أعضاء اللجنة

al-Najjar, Husam Muhammad
Abu Habib, Azzam Ahmad

الجامعة

الجامعة الإسلامية

الكلية

كلية الهندسة

القسم الأكاديمي

قسم الهندسة المدنية

دولة الجامعة

فلسطين (قطاع غزة)

الدرجة العلمية

ماجستير

تاريخ الدرجة العلمية

2014

الملخص الإنجليزي

Gaza Strip suffers from scarcity of drinking water sources, Where groundwater is the main source of drinking water, as a result of the substantial increase in the number of population in the Gaza Strip led to the disruption of equilibrium.

So that a consumption rate of groundwater much bigger than the supply, which led to the poor quality of the water and lack of compatibility with the WHO standards for drinking water quality, both in the physical and chemical properties.

So several desalination plants set up, all of these stations used Reverse Osmosis (RO) membranes, which need large quantities of pressure which means the consumption of large amounts of energy, while the limited sources of energy had to be a search for techniques less energy-consuming.

This research aims to work a comparative study between (RO) membranes and Nanofiltration (NF) in terms of the ability to remove TDS and NO3, as well as the amount of water produced at each pressure, in the same conditions and energy consumption compared in each of these cases.

A small desalination unit was installed and used to compare two different types of membrane NF90-4040 Nanofiltration and TM-710 Reverses Osmosis membrane, where both types have been tested in the same conditions and using different types of water.

Three types of water were used ( aqueous solution, real brackish water and seawater ) were examined the effectiveness of each membrane by measuring the flux rate and rejection rate of TDS and NO3, the concentration of TDS in aqueous solution ranging from (4500 to 17000) ppm and the concentration of nitrates from (0 to 150 ) ppm, under different operating pressures ranging from (6 to 24) bar.

The results show that the productivity of NF membranes were more than that using RO membrane.

Results also showed the possibility of using NF membranes to product drinkable water agreed with WHO guideline when the feed water TDS concentration less than 9,281 ppm.

Also NF membranes can be used as pretreatment when the feed water TDS concentration more than 9,281 ppm also it can be used as pretreatment for desalinating sea water .

The results indicate that the efficiency of nitrate rejection affected overall concentration of feed water TDS concentration, as well as the nitrate rejection rate using NF membrane could be up to 95% while nitrate rejection rate using RO membrane may reach greater than 98 %, according to feed water TDS concentration and the pressure used.

Results indicated clearly that the use of NF membranes can provide a rate of 25 to 60% of energy compared with the use of RO membranes, according to feed water TDS concentration.

التخصصات الرئيسية

الهندسة المدنية

الموضوعات

• تحلية المياه
• المياه
• المياه المالحة
• محطات معالجة المياه

عدد الصفحات

137

قائمة المحتويات

• APA
• MLA
• AMA

لغة النص

الإنجليزية

نوع البيانات

رسائل جامعية

رقم السجل

BIM-530767