CAJ | 학술논문

在实验室条件下模拟海产品深加工废水,利用自制纳米TiO2为光催化剂,在紫外光照射下进行光催化氧化海产品深加工废水的研究,考察了催化剂用量、溶液pH、氨氮初始浓度、化学需氧量( COD)初始浓度、光照时间等因素对光催化氧化过程的影响。结果表明：纳米TiO2光催化剂能有效催化降解海产品深加工废水中的氨氮和COD等污染物,其优化处理条件为TiO2添加量0.9 g/L、氨氮初始浓度80 mg/L、COD初始浓度300 mg/L、溶液pH 9、紫外光照射3 h,在此优化工艺条件下,氨氮和COD的去除率分别可达69.76%和73.33%。
재실험실조건하모의해산품심가공폐수,이용자제납미TiO2위광최화제,재자외광조사하진행광최화양화해산품심가공폐수적연구,고찰료최화제용량、용액pH、안담초시농도、화학수양량( COD)초시농도、광조시간등인소대광최화양화과정적영향。결과표명：납미TiO2광최화제능유효최화강해해산품심가공폐수중적안담화COD등오염물,기우화처리조건위TiO2첨가량0.9 g/L、안담초시농도80 mg/L、COD초시농도300 mg/L、용액pH 9、자외광조사3 h,재차우화공예조건하,안담화COD적거제솔분별가체69.76%화73.33%。
The photo-catalytic degradation of seafood processing waste water by nano-titanium dioxide prepared during the experiment was studied in a photo-catalytic system of TiO2 with the UV excitation. The effects of differ-ent degradation variables on the degradation efficiency were investigated,including amount of catalyst,pH value, in-itial concentration of ammonia-N and chemical oxygen demand ( COD) in seawater, and catalytic reaction time. The results showed that nano-TiO2 photocatalyst led to effective degradation of seafood processing wastewater and the pollutants under the optimal conditions for photocatalytic degradation of ammonia-N and COD. It was found that 69. 76% of ammonia-N and 73. 33% of COD were eliminated under the conditions of 0. 9 mg/L of TiO2 , catalytic reaction for 3 h, initial ammonia-N of 80 mg/L, initial COD of 300 mg/L, and pH of 9.