ฉันรักแปลPilot scale trickling filt

ฉันรักแปลPilot scale trickling filters were constructed and tested in order to study biological removal of ammonia, iron and manganese from potable water. The effect of the size of the support material on nitrification performance was studied extensively. The mean size of the gravel and hence, the specific surface area was found to be critical for optimal nitrification operation. A steady-state model developed in previous work was used to predict filter's performance. The model was very accurate only for the gravel size for which maximum nitrification rates were observed. The effect of the operational conditions on the physico-chemical and combined physico-chemical and biological iron oxidation was also studied. It was found that the contribution of biological oxidation is significant, increasing filter's efficiency by about 6% and reducing the required filter depth by about 40%. Manganese biological removal was studied using gravel with small mean diameter, thus providing high specific surface area. Feed concentrations up to 4.0 mg/l were treated sufficiently. Finally, experiments were performed to investigate the simultaneous removal of ammonia, iron and manganese. Experimental results showed that the combined, as well as the simultaneous removal of the aforementioned pollutants, can be achieved by single-step filtration.

ผลลัพธ์ (แอฟริกา) 1:

Ek is lief vir die vertaling van proefaanlegskaal kabbelen filters is gebou en getoets ten einde biologiese verwydering van ammoniak, yster en mangaan uit drinkwater te bestudeer. Die effek van die grootte van die ondersteuningsmateriaal op nitrifikasie prestasie is omvattend bestudeer. Die gemiddelde grootte van die gruis en. dus, is die spesifieke oppervlakte gevind van kritieke belang vir optimale nitrifikasie werking wees. A bestendige toestand model ontwikkel is in die vorige werk gebruik is om prestasie filter se voorspel. die model was baie akkuraat net vir die gruis grootte waarvoor maksimum nitrifikasie tariewe is waargeneem. die effek van die operasionele toestande op die fisies-chemiese en gekombineer fisies-chemiese en biologiese yster oksidasie is ook bestudeer. Daar is bevind dat die bydrae van biologiese oksidasie is betekenisvol, die verhoging van doeltreffendheid filter se sowat 6% en die vermindering van die vereiste filter diepte deur. ongeveer 40%. Manganese biologiese verwydering bestudeer met behulp van gruis met 'n klein gemiddelde deursnee, dus die verskaffing van hoë spesifieke oppervlakte. Voer konsentrasies tot 4.0 mg / l is genoeg behandel. Ten slotte, is eksperimente uitgevoer om die gelyktydige opheffing van ammoniak, yster ondersoek en. mangaan. eksperimentele resultate dui daarop dat die gekombineerde, asook die gelyktydige opheffing van die voorafgaande besoedeling, bereik kan word by 'n enkele stap filtrasie.