نتایج جستجو برای: processing wastewaters
تعداد نتایج: 501644 فیلتر نتایج به سال:
ÐMicrobial pathogens are one of the major health risks associated with water and wastewaters. Current methods for the detection of pathogenic viruses, bacteria, protozoa and helminths tend to be inaccurate, time consuming and expensive. As a result, indicator bacteria are commonly used to determine the relative risk of faecal contamination and the possible presence of pathogens in water and was...
oily wastewaters from oil refineries and oil distribution centers are one of the most important environmental concerns in recent decades; therefore, it is critical to treat these types of wastewaters. in this study, the performance of different polyethersulfone hollow fiber membranes in oily wastewaters treatment was investigated and the effects of operating conditions such as transmembrane pre...
biological removal of lead was observed in this study during treatment of synthetic solutions of this heavy metal by a sample of waste activated sludge (was) having mlss concentration of 10000 mg/l. the objective was determining the capability of was in removal of lead in three different conditions of treatment: without any aeration and feeding, by simultaneous aeration and feeding and by aerat...
The impact of effluent wastewaters from four different hospitals: a university (1456 beds), a general (350 beds), a pediatric (110 beds) and a maternity hospital (96 beds), which are conveyed to the same wastewater treatment plant (WWTP), was evaluated in the receiving urban wastewaters. The occurrence of 78 pharmaceuticals belonging to several therapeutic classes was assessed in hospital efflu...
during natural gas processing, water in natural gas may cause to hydrates formation in pipelines which may lead to serious damages to process equipments. given the problems raised by present of water in natural gas, glycol solvent uses to remove water.in contact of glycol with gas always an amount of btex and voc absorb along with water, which on glycol recovery process, these substances separa...
Significant volumes of wastewater are routinely generated during agro-industry processing, amounting to millions tonnes annually. In line with the circular economy concept, there could be a possibility simultaneously treating and recovering bio-energy resources such as bio-hydrogen. This study aimed model effect different process parameters that influence treatment recovery from agro-industrial...
Nitritation can help lower ammonia oxidation treatment costs through traditional nitrogen removal processes for wastewaters with high (N) concentrations or low carbon to ratios (C/N) and facilitate the anammox process. Free nitrous acid (FNA) free (FA) inhibit nitrite oxidizing bacteria (NOB). Only a few studies have evaluated control of nitritation at elevated TN none > 2000 mg/L, characterist...
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