Yukarı akışlı anaerobik çamur örtü reaktöründe siyanür giderimi

Bu çalışmada yukarı akışlı anaerobik çamur örtü (ÇÖR) reaktörünün siyanür adaptasyon süreci, siyanür giderme verimi ve siyanür giderimi sırasında organik karbon gereksinimi araştırılmıştır. 24 saat hidrolik bekletme süresiyle işletilen anaerobik reaktöre 1 mg/L' den 130 mg/L'ye kadar artan konsantrasyonlarda siyanür beslemesi yapılmıştır. ÇÖR'de 110 mg/L siyanüre adaptasyon gerçekleşmiştir. 1 mg/L siyanür yüklemesinde % 99 olan siyanür giderme verimi, artan siyanür yüklemelerine bağlı olarak % 94'e kadar azalmıştır. Siyanür giderimi sırasında anaerobik reaktörün karbon ihtiyacını belirlemek için, 3000 mg/L olan giriş suyu KOİ konsantrasyonu sırasıyla 1500, 500 ve 250 mg/L'ye düşürülmüştür. KOİ konsantrasyonunun 1500 ve 500 mg/L'ye azalması, reaktörü olumsuz etkilememiştir. 250 mg/L KOİ konsantrasyonunda, ÇÖR 'de çıkış suyu siyanür konsantrasyonu 7-8 mg/L 'den 50 mg/L ye yükselmiştir.

Cyanide removal in upflow anaerobic sludge blanket reactor

In this study, the process of cyanide adaptation and the performance of cyanide removal in the upflow anaerobic sludge blanket reactor (UASBR) were examined. The requirement of organic carbon during the cyanide removal was also investigated. The reactor operated with the 24 h hydraulic retention time (HRT) was continuously fed with increasing cyanide concentrations from lmg/L to 130mg/L. Adaptation was observed at the 110 mg/L cyanide concentration in the UASBR. The cyanide removal has decreased from 99% to 94% with increasing cyanide loading from 1 mg/L to 110 mg/L. During the cyanide removal, influent COD concentrations has been decreased from 3000 mg/L to 1500, 500 and 250 mg/L, respectively. UASBR was not affected negatively by decreased COD concentrations at 1500 mg/L and 500 mg/L. Whereas, for the 250 mg/L COD concentration, effluent cyanide concentration in UASBR increased from 7-8 mg/L to 50 mg/L.

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