Modification of Wastewater Treatment Technology at Cottonseed Oil Plant

Abstract

Abstract.Wastewaters from cottonseed oil producing plant in Syria were studied in laboratory experiments. Aim of the study was to suggest modification of wastewater treatment technology in order to increase its efficiency. Concentration of pollutants in wastewaters was controlled by measurement of COD. According to the results of experiments it was suggested to decrease significantly (8-20 times) dosages of reagents (acidifier, coagulant, flocculant) in several actual stages of treatment (acidification, separation, coagulation and sedimentation) and add stage of dispersed air flotation before coagulation treatment. The modified wastewater treatment technology would reduce COD to the values allowed for irrigation waters by Syrian National Standard.

Hundred percent renewable wastewater treatment plant: techno-economic assessment using a ret screen, case study Syria

“…The discharge of sewage into the Awaj basin has led to the contamination of the spring water there, making it unsafe to drink [11]. Some of the wells in Ghouta have nitrate levels that are unsafe for human consumption because they are above the limits that have been established [12]. Because of the discharge of sewage and the use of fertilizer, wells in the coastal region that are used for drinking water have high concentrations of nitrates and ammonia [13].…”

“…Given Syria's dire water situation, this is an important step toward stabilizing the country's water crisis and preventing health problems. Installing and maintaining wastewater treatment systems ensures that effluent quality is within acceptable standards and hence safe for the environment [12]. Over the past two decades, wastewater treatment facilities (WWTPs) have gained popularity in several Syrian cities.…”

Impact of magnetic field on electrochemistry of heavy metals removal processes by duckweed (lemna)

“…The main sources of pollution of natural waters with heavy metals (HM) are wastewater (WW) of galvanic shops, mining enterprises, ferrous and non-ferrous metallurgy, machinebuilding plants. Most of the known methods of sewage purification are expensive, difficult to perform, they focus on imported equipment and scarce reagents [1][2][3][4][5][6][7][8][9]. Recently industrially developed countries started to introduce the technology of clearing wastewaters, contaminated with heavy metals, with the help of higher water plants (HWP), called phytoremediation.…”

Wastewaters of meat-processing enterprise: assessment of genotoxic potential

“…Food production enterprises, including meat-processing ones are the sources of antropogenic and technogenic impact of its wastewaters on the natural water bodies. Development of technologies for purification and utilization of industrial wastes requires usage of express-tests, which allow one to obtain fast and qualitative characterization of wastes and wastewaters [1][2][3][4][5][6][7][8][9][10][11].…”