| 引用本文: | 胡维平,濮培民,李万春.中国太湖物理—生物工程实验中菱对水质影响的模式.湖泊科学,1998,10(s1):507-518. DOI:10.18307/1998.sup51 |
| HU Weiping,PU Peimin,LI Wanchun.A Model on a Physico-Biological Engineering Experiment for Purifying Water by using Trapa natans var. bispinosa in Wulihu Bay of Taihu Lake, China. J. Lake Sci.1998,10(s1):507-518. DOI:10.18307/1998.sup51 |
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| 摘要: |
| A model on a physico-biological engineering experiment for purifying water in Wulihu Bay of Lake Taihu by using Trapa natans var. bispinosa was constructed. The state variables in water in the physico-biological engineering were ammonium nitrogen (NH4+-N); nitrate nitrogen (NO3--N); nitrite nitrogen (NO2--N); phosphate phosphorus (PO43--P); dissolved oxygen (DO); nitrogen (N) and phosphorus (P) in detritus; biomass density, N and P in phytoplankton and in Trapa natans var. bispinosa, N and P in the substance adsorbed by the membrane of the engineering and the rootstocks of Trapa natans var. bispinosa. The state variables in bottom mud layer were PO43--P in the core water,exchangeable P and N. The external forcing functions were solar radiation, water temperature, NH4+-N; NO3--N; NO2--N; PO43--P; N and P in detritus; DO; phytoplankton concentrations in inflow water and the retention time of the water in physico-biological engineering channel. The main physical, chemical and biological processes considered in the model were:growth of Trapa natans var. bispinosa and phytoplankton; oxidation of NH4+-N and NO2--N, of detritus break down; N and P sorption by the enclosure cloth of the experimental engineering and by the rootstocks of Trapa natans var. bispinosa in water; reaeration of water; uptake of P, NH4+-N, NO3--N by phytoplankton and Trapa natans var. bispinosa:mortality of the phytoplankton and Trapa natans var. bispinosa:settling of detritus; and nutrient release from sediment. Comparison of calculated results and observed results showed that the model was constructed reasonably for the experiment. The mechanism of purifying lake water in the experiment engineering was discussed by the use of the model. |
| 关键词: Model Physico-biological engineering Water quality Trapa natans var.bispinosa Lake Taihu |
| DOI：10.18307/1998.sup51 |
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| 基金项目:This work is one of the research results of China-Denmark joint study on the physico-biological engineering for removing phytoplankton and improving water quality in Lake Taihu supported by European Union under the Fixed Contract No. CIl*-CT93-0094 (DG 12 HSMU). |
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| A Model on a Physico-Biological Engineering Experiment for Purifying Water by using Trapa natans var. bispinosa in Wulihu Bay of Taihu Lake, China |
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HU Weiping, PU Peimin, LI Wanchun
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Nanjing Institute of Geography & Limnology, CAS, Nanjing 210008, China
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| Abstract: |
| A model on a physico-biological engineering experiment for purifying water in Wulihu Bay of Lake Taihu by using Trapa natans var. bispinosa was constructed. The state variables in water in the physico-biological engineering were ammonium nitrogen (NH4+-N); nitrate nitrogen (NO3--N); nitrite nitrogen (NO2--N); phosphate phosphorus (PO43--P); dissolved oxygen (DO); nitrogen (N) and phosphorus (P) in detritus; biomass density, N and P in phytoplankton and in Trapa natans var. bispinosa, N and P in the substance adsorbed by the membrane of the engineering and the rootstocks of Trapa natans var. bispinosa. The state variables in bottom mud layer were PO43--P in the core water,exchangeable P and N. The external forcing functions were solar radiation, water temperature, NH4+-N; NO3--N; NO2--N; PO43--P; N and P in detritus; DO; phytoplankton concentrations in inflow water and the retention time of the water in physico-biological engineering channel. The main physical, chemical and biological processes considered in the model were:growth of Trapa natans var. bispinosa and phytoplankton; oxidation of NH4+-N and NO2--N, of detritus break down; N and P sorption by the enclosure cloth of the experimental engineering and by the rootstocks of Trapa natans var. bispinosa in water; reaeration of water; uptake of P, NH4+-N, NO3--N by phytoplankton and Trapa natans var. bispinosa:mortality of the phytoplankton and Trapa natans var. bispinosa:settling of detritus; and nutrient release from sediment. Comparison of calculated results and observed results showed that the model was constructed reasonably for the experiment. The mechanism of purifying lake water in the experiment engineering was discussed by the use of the model. |
| Key words: Model Physico-biological engineering Water quality Trapa natans var.bispinosa Lake Taihu |
