Monitoring and Modeling of Fayoum Distribution Networks According to Trihalomethanes Formation

This paper  aimed to predict THMs con. in water networks having multiple feeding sources.  Results showed that the THMs con. in all the selected points in the distribution network of Fayoum, Egypt was less than the maximum  acceptable con. A statistically-based empirical models were developed for predicting THMs formation under different condition. The first model was developed to predict THMs con. at the exit of the conventional WTPs with R2 = 0.83. The second model was developed to predict THMs con. at the exit of the Direct filtration WTPs with R2= 0.842. The third model was developed to predict THMs con. for water supply networks having one feeding source with R2 = 0.856. The fourth model was developed to predict THMs con. for water supply networks having multi-feeding sources with R2 = 0.555. Furthermore, WaterCad program was used to predict THMs con. at FWSN with 1.55 day-1 THMs growth rate. Keywords: Trihalomethanes, Disinfections by-products, Distribution network

Treatment of Industrial Oil and Soap Wastewater by Using the Application of Electrocoagulation Process

Electrocoagulation (EC) treatment of oily and soap industrial wastewater was studied in this paper. Operating parameters such as operating time, medium pH, voltage density, and electrode material and chemical oxygen demand (COD) are being investigated in oil and soap removal efficiencies. The maximum efficiency of COD removal is achieved using aluminum electrodes was 96.92%. The performance of EC using aluminum as the electrode exhibited better COD and oil-grease (O&G) removal than the iron electrode. EC is an extremely promising industrial wastewater treatment technique because it is simple, economic and less sludge production technology, especially for oil and soap wastewater. The optimum conditions to achieve high COD removal efficiency of about 96.92% in 30 min was found to be in using initial pH value range 2–3, and a voltage of 20 volts