钝顶螺旋藻在景电灌区农业灌溉退水养殖条件下的固碳效应及对退水水质净化效果研究OA
Study on the Carbon Fixation Effect of Spirulina Platensis Under the Condition of Agricultural Irrigation in Jingdian and Its Purification Effect on the Effluent Water Quality
为探讨微藻在景电灌区农业灌溉退水养殖条件下的固碳效应及其对水质净化的效果.以钝顶螺旋藻为试材,农业灌溉退水作为养殖用水,研究不同CO2体积分数(0.03%为对照组,1.0%、2.0%、3.0%、4.0%和5.0%)对螺旋藻生长、生物量、品质及固碳效应的影响,并评估最佳CO2体积分数下对灌溉退水水质的改善效果.结果表明,随着养殖时间的延长,各CO2体积分数处理组的螺旋藻生长速率、生物量、含碳量、固碳速率以及可溶性蛋白和糖含量均显著高于对照组.生长速率和固碳速率呈现先增加后降低的趋势.在CO2体积分数为4.0%时,螺旋藻的生长速率、生物量、含碳量、固碳速率以及可溶性蛋白和糖含量(胞内多糖、胞外多糖)均达到最高水平,分别较对照组提高了153.1%、147.1%、81.7%、374.1%、56.5%(35.1%、27.4%).在最佳CO2体积分数为4.0%条件下,经过90天养殖,退水中CODCr、BOD5、NH3-N、TP和TN的去除率分别为75.64%、90.49%、28.20%、68.42%和90.73%.pH、CODCr、BOD5、TP和TN浓度均符合《地表水环境质量标准》(GB3838-2002)中III类标准限值.研究为钝顶螺旋藻在农业灌溉退水条件下固定CO2和水质净化中的应用提供了理论依据.
The purpose of this study was to investigate the carbon sequestration effect of Spirulina platensis and its water purification efficiency under the condition of agricultural irrigation backwater culture in Jingdian Irrigation District.The effects of different CO2 volume fractions(0.03%as control group,1.0%,2.0%,3.0%,4.0%and 5.0%)on the growth,biomass,quality and carbon sequestration of Spirulina platensis were studied by using agricultural irrigation water as culture water,and the improvement effect of irrigation water quality under the optimal CO2 volume fraction was evaluated.The results showed that with the prolongation of culture time,the growth rate,biomass,carbon content,carbon fixation rate,soluble protein and sugar content of spirulina in each CO2 volume fraction treatment group were significantly higher than those in the control group.The growth rate and carbon sequestration rate showed a trend of increasing first and then decreasing.When the volume fraction of CO2 was 4.0%,the growth rate,biomass,carbon content,carbon fixation rate,soluble protein and sugar content(intracellular polysaccharide and extracellular polysaccharide)of spirulina reached the highest level,which were 153.1%,147.1%,81.7%,374.1%and 56.5%(35.1%,27.4%)higher than those of the control group,respectively.The removal rates of CODCr,BOD5,NH3-N,TP and TN in the effluent were 75.64%,90.49%,28.20%,68.42%and 90.73%,respectively,after 90 days of culture under the optimum CO2 volume fraction of 4.0%.The concentrations of pH,CODCr,BOD5,TP and TN all meet the Class III standard limits in the"Surface Water Environmental Quality Standard"(GB3838-2002).This study provides a theoretical basis for the application of Spirulina platensis in CO2 fixation and water purification under the condition of agricultural irrigation.
刘斌;廖赞;寇燕燕;张生银;张景辉
甘肃省景泰川电力提灌水资源利用中心,甘肃 白银 730400||甘肃农业大学园艺学院,甘肃 兰州 730070甘肃省景泰川电力提灌水资源利用中心,甘肃 白银 730400甘肃省景泰川电力提灌水资源利用中心,甘肃 白银 730400中国科学院西北生态环境资源研究院,甘肃 兰州 730099甘肃省景泰川电力提灌水资源利用中心,甘肃 白银 730400
农业科技
钝顶螺旋藻生长速率固碳速率农业灌溉退水水质
Spirulina platensisgrowth ratecarbon sequestration rateagricultural irrigation water quality
《中国农村水利水电》 2026 (5)
10-17,8
农业农村部"甘肃省白银市景泰县盐碱地综合利用试点项目(第二标段)核心试验示范工程"(JTYJDSDXM-SG-02)子项目"盐碱地盐碱水微藻养殖集成试验示范"(SF4.6-4)甘肃省青年科技基金项目"景电灌区农业节水抗旱丰产提质综合技术研究与应用"(23JRRD0001)甘肃省水利科学试验研究及技术推广计划项目"景电灌区退水固碳增汇技术研发"(24GSLK016)"景电灌区退水高效利用"(甘水科外发[2016]76号)
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