摘要
研究了辣木籽粕粗提液处理模拟浊度水及对水质的影响.结果表明,辣木籽粕粗提液用量分别为10,20,30,40 mL时,对中浊度(初始浊度80 NTU)和高浊度(初始浊度150 NTU)原水的絮凝沉淀效果较好,而对低浊度(初始浊度25 NTU)原水的絮凝沉淀效果欠佳.中、高浊度水的浊度随絮凝沉淀时间而降低,低浊度水的浊度则先增高后降低.絮凝沉淀30 min的中高浊度水和150 min的低浊度水经砂滤后出水浊度即可达到生活饮用水标准所定限值.滤后水中CODMn和硝态氮的含量都随粗提液用量增大而增加,CODMn最低为21.5 mg·L-1,滤后水中硝态氮最高为6.6 mg·L-1.
Experiments were carried out to investigate the coagulation of turbidity by coarse extract of Moringa oleifera seed meal （CEMOSM） and its influence on water quality. The results indicate that when the CEMOSM doses are 10,20,30 and 40 mL, the removal rates of turbidity of the raw water with medium and high turbidity （initial turbidity 80 NTU and 150 NTU） are higher than that of raw water with low turbidity （ initial turbidity 25 NTU） , and the turbidity of the raw water with medium and high turbidity coagulated by the CEMOSM decreases with time, however, the turbidity of the raw water with low turbidity coagulated by the CEMOSM increases first and then decreases with time. The final turbid- ity of the three groups of raw water with different initial turbidities decreases with the increase of CEM- OSM dose at the end of the experiments. The turbidity of the water with medium and high turbidity fil- tered through the sand filter met the turbidity standard for drinking water after settlement for 30 min, while settlement for at least 150 min was necessary for the low turbidity water to meet the same stand- ard. The contents of CODM. and NO3-N increased with the increase of CEMOSM dose, the lowest CODMn concentration of the filtered water was 21. 5 mg· L-1, and the maximum concentration of NO3-N was 6.6 mg· L-1
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2014年第2期214-218,共5页
Journal of Henan Agricultural University
基金
南京大学污染控制与资源化国家重点实验室开放基金项目(PCRRF12106)
关键词
辣木籽粕
粗提液
浊度
水质
Moringa oleifera seed meal
coarse extract
turbidity
water quality
