Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : TDS


Neural Network Modelling of Tds Concentrations in Shatt Al-Arab River Water

Ahmed Naseh Ahmed; Ammar S. Dawood

Engineering and Technology Journal, 2016, Volume 34, Issue 2, Pages 334-345

River water salinity is a big concern in many countries, considering agricultural and drinking usages. Therefore, prediction of amount of Total Dissolved Solid (TDS) is a necessary tool for planning and management of water resources. Shatt Al-Arab river basin in Basrah which is located in south of Iraq suffer from high salinity, therefore use of the water for irrigation and drinking has become problematic. In this regard, prediction of future TDS of Shatt Al-Arab river basin was studied using Artificial Neural Network (ANN).
Data measured monthly from January 2007 up to December 2012 at monitoring station in the middle point along to the Shatt Al-Arab river has been used for training of the selected ANN.
Some of water quality parameters such as, power of hydrogen (pH), Total Hardness (TH), Magnesium hardness (MgSO4), Calcium hardness (CaSO4), Chlorides (Cl), Sulphates (SO4), turbidity (TU) and electrical conductivity (EC) were considered as inputs for the ANN and Total Dissolved Solid (TDS) was the output of the model.
The validation of the neural network model showed very good agreement for predictions of the TDS concentrations between observed and simulated values.
The coefficient of correlation (R), during the validation process was found to be (1), and the mean squared error (MSE) was (0.075). This work supports the concept that the neural network approach is a successful method of modelling such complex and nonlinear behavior of TDS in the rivers with different environmental conditions.

Microbial-Chemical Field Study of "Al-Muqdadiah" Water Network and "Mahroot" River Intake

SalihA.Al-Bakri

Engineering and Technology Journal, 2014, Volume 32, Issue 13, Pages 445-455

This study was carried out during (2012-2013) on the water network of "Al-Muqdadiah"City and the water intake from"Mahroot"River, because this study believes of field work and investigation of microbial contamination and chemical pollution. Some important parameters in `HZour study: Electric Conductivity (EC), Total Dissolve Solids (TDS),Hydrogen Potential (pH), Total Hardness (TH), Chloride (Cl),Magnesium (Mg),Calcium (Ca), Lead (Pb), Chrome (Cr),Cadmium (Cd), Most Probable Number (MPN),Were selected and examined to measure and evaluate the levels of parameters of microbial contamination and chemical pollution.The results indicated no evidence of microbial contamination in net and treated water in the plant except the water intake from the river. Negative result of cadmium and positive of Lead and variation of chrome levels. However the result showed increasing of total hardness, total dissolve salts, electric conductivity, with normal values for chloride and pH.

Effects of Discharging Sewage of Baghdad To Tigris River on TheWater Quality

Abbas H. Sulaymon; Ibtihaj A. Abdul Razzak

Engineering and Technology Journal, 2009, Volume 27, Issue 16, Pages 2903-2917

Tigris River one of the rivers that suffer from the effect of conservative pollutants. This study include the distribution of pollutants ( which are BOD5, TDS, pH, T.H., SO4 -2, Na+, and turbidity ) in Tigris river between Al-A'imma bridge and Al-Jumhuria bridge ,a reach which is about (9 km) length within Baghdad city; which include four sewage pumping stations untreated discharged to the river.
It was conclude that the concentrations of pollutants were increase at the discharge points in the river and exceeding the acceptable limits according to the Iraqi standards specification of surface water , then BOD5 and T.H. became within the acceptable values after (7.8 km ) in the study region , and pH, TDS and Na+ were within the acceptable ranges in all stations in the region, while SO4 -2 was exceed the allowable value (250 ppm) in all of the study region, and for turbidity it was reach to (4.5 NTU) on (8 km) in the study region. At the time of low discharges of Tigris river, sewage pumping stations should set at low discharge rate to decrease the pollutant's concentrations in Tigris river .

RECLAMATION OF PCB WASTEWATER

Matheel D. Al-Sabtia; Nahidh W. Kasser; Mudhafar Y. Hussein

Engineering and Technology Journal, 2008, Volume 26, Issue 11, Pages 1326-1340

Wastewater from electronic printed circuit board (PCB) factories was subjected
to lab-scale ion exchangers of two types: strong acid cation followed by weak base
anion exchanger. The experimental investigation was directed to study the ion
exchanger performance in terms of three different parameters namely (TDS, feed
rate and bed depth). Box-Wilson composite rotatable design was adopted in
designing the experiments. Breakthrough times of (PCB) wastewater were studied
through TDS ranged between 317 to 1193 ppm, feed rate ranged between 0.712 to
4.980 l/h, and bed depth of cation exchanger ranged between 9.4 to 60.6 cm and
anion exchanger ranged between 14.3 to 91.0 cm.
Simulation the effect of the studied variables through their pre-designed ranges
in terms of breakthrough time by 2nd order polynomial equation was obtained. In
general, the performance and characteristics of adopting two bed deionizers (cation
and anion beds) was proved efficient for the removal of the ionic contaminants and
not less than 95 % of wastewater is recycled. In addition, the research considers the
treatment of highly metals content regenerant solution out coming from
reclamation system to minimize its metal content. The reclamation of wastewater
was studied in terms of breakthrough time (i.e., the leakage of the cations).