水资源保护
水資源保護
수자원보호
WATER RESOURCES PROTECTION
2014年
5期
32-37
,共6页
直立式混凝土护岸%蚝壳%竹片%椰壳纤维垫%河道自净能力%人工模拟河道%水质净化试验
直立式混凝土護岸%蠔殼%竹片%椰殼纖維墊%河道自淨能力%人工模擬河道%水質淨化試驗
직입식혼응토호안%자각%죽편%야각섬유점%하도자정능력%인공모의하도%수질정화시험
vertical concrete revetment%oyster shells%bamboo pieces%coir%river self-purification%artificial river%water purification experiment
在具有直立式护岸的人工模拟河道中，把蚝壳、竹片和椰壳纤维垫3种天然材料分别直接覆盖在护岸表面，以研究其对提高河道自净能力的影响。结果表明：试验启动21 d后，3种材料覆盖后河道COD去除率分别达到93％，74％，94％，高于对照组的60％；NH3-N的去除率均达到95％，高于对照组的59％；NO-3-N质量浓度在3种材料护岸和对照护岸分别升高至5.9 mg/L，5.0 mg/L，5.8 mg/L和3.9 mg/L，而TP去除率分别达到71％，37％，78％，对照组为64％，3种材料对提高河道水质净化能力均有明显效果。竹片表面附着的微生物磷脂含量和脱氢酶活性最大，分别为12 nmol/cm和45.0μg/（ mL· h），分别是蚝壳的3.4和1.6倍，是椰壳纤维垫的4.8和4.5倍，3种天然材料均能为微生物附着生长和繁殖提供空间，促进河道中污染物的降解。
在具有直立式護岸的人工模擬河道中，把蠔殼、竹片和椰殼纖維墊3種天然材料分彆直接覆蓋在護岸錶麵，以研究其對提高河道自淨能力的影響。結果錶明：試驗啟動21 d後，3種材料覆蓋後河道COD去除率分彆達到93％，74％，94％，高于對照組的60％；NH3-N的去除率均達到95％，高于對照組的59％；NO-3-N質量濃度在3種材料護岸和對照護岸分彆升高至5.9 mg/L，5.0 mg/L，5.8 mg/L和3.9 mg/L，而TP去除率分彆達到71％，37％，78％，對照組為64％，3種材料對提高河道水質淨化能力均有明顯效果。竹片錶麵附著的微生物燐脂含量和脫氫酶活性最大，分彆為12 nmol/cm和45.0μg/（ mL· h），分彆是蠔殼的3.4和1.6倍，是椰殼纖維墊的4.8和4.5倍，3種天然材料均能為微生物附著生長和繁殖提供空間，促進河道中汙染物的降解。
재구유직입식호안적인공모의하도중，파자각、죽편화야각섬유점3충천연재료분별직접복개재호안표면，이연구기대제고하도자정능력적영향。결과표명：시험계동21 d후，3충재료복개후하도COD거제솔분별체도93％，74％，94％，고우대조조적60％；NH3-N적거제솔균체도95％，고우대조조적59％；NO-3-N질량농도재3충재료호안화대조호안분별승고지5.9 mg/L，5.0 mg/L，5.8 mg/L화3.9 mg/L，이TP거제솔분별체도71％，37％，78％，대조조위64％，3충재료대제고하도수질정화능력균유명현효과。죽편표면부착적미생물린지함량화탈경매활성최대，분별위12 nmol/cm화45.0μg/（ mL· h），분별시자각적3.4화1.6배，시야각섬유점적4.8화4.5배，3충천연재료균능위미생물부착생장화번식제공공간，촉진하도중오염물적강해。
In order to study the influences of three natural materials (oyster shells, bamboo pieces, and coir mats) on improvement of the self-purification capacity of rivers with vertical revetments , these natural materials were used to cover the surface of the vertical revetment in an artificial river .The results show that , after the experiments lasted for 21 days, the removal rates of COD with the three kinds of revetments reached 93%, 74%, and 94%, respectively , higher than the level of 60%in the control river .The removal rates of NH 3-N with the three kinds of revetments all reached 95%, higher than the level of 59%in the control river .The concentrations of NO-3-N with the three kinds of revetments increased to 5.9 mg/L, 5.0 mg/L, and 5.8 mg/L, respectively, while that in the control river increased to 3.9 mg/L.The removal rates of TP with the three kinds of revetments reached 71%, 37%, and 78%, respectively , while that in the control river reached 64%.The three kinds of revetments played a significant role in improving the self-purification capacity of the river . The lipid phosphorus content and dehydrogenase activity ( DHA) of the microbial film on the surface of bamboo pieces were 12 nmol/cm and 45.0μg/( mL· h) , respectively , 3.4 and 1.6 times higher than those of oyster shells , and 4.8 and 4.5 times higher than those of coir mats , respectively .These three natural materials can provide a habitat for microbial growth and reproduction , and can promote the degradation of pollutants in rivers .
