造价通
更新时间:2025.05.11
污水处理中温度对黑藻生长的影响(英文)

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[Objective] The research aimed to study the influence of temperature on the growth of Hydrilla verticillata in the wastewater treatment process.[Method] By using the single factor experiment design,four temperatures which were 5,15,25 and 35 ℃ were set.The growth situation of H.verticillata under the different temperatures was observed in the treatment process of domestic sewerage.[Result] H.verticillata grew luxuriantly at 35 and 25 ℃.Via the cultivation of 15 days,the plant length,branch number,root number and biomass of H.verticillata respectively increased 2.8 and 1.2 cm,7.0 and 5.9 branches,6.2 and 3.7 roots,21% and 25%,which were all significantly or extremely significant higher than that at 5 ℃.Under the cultivation condition of 15 ℃,H.verticillata grew slowly.The increment of plant length,branch number and root number were higher than that at 5 ℃,but they had no significant difference.[Conclusion] During 5-35 ℃,the higher temperature could promote the growth of H.verticillata in wastewater treatment process.

不同基质物化特性及对红叶石楠生长的影响

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通过对不同基质(泥炭、木屑、FDL-Ⅲ及树皮;其中FDL-Ⅲ由牛粪、树皮、木屑和山核桃壳按一定比例混合而成)的最大持水量、基质容重、基质固、液、气三相比、淋洗液电导率、pH、NH4+和P浓度的测定,研究不同基质对红叶石楠生长的影响。结果表明:红叶石楠在FDL-Ⅲ基质中生长显著好于其他三种基质;各基质的淋洗液电导率和pH值变幅分别在0.39~0.91mscm-1和5.32~6.72之间,NH4+浓度和水溶性P浓度变幅分别在10.0~171.6mgkg-1和1.16~8.93mgkg-1之间;容重变幅在0.14到0.20gcm-3之间,均属于轻型基质;各处理基质的水/气比变幅较大,在1~4.8之间,其中FDL-Ⅲ为1.63,为最适植物生长的水/气比。与泥炭、木屑及树皮基质相比,FDL-Ⅲ持水稳定性最强;苗木生长与基质最大持水量呈线性显著相关,而与其他理化性状不相关。

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