發(fā)布時(shí)間：2018-02-10 04:27

  本文關(guān)鍵詞： 水浮蓮 水葫蘆 污水處理 水體修復(fù) 酶活性　出處：《中國(guó)環(huán)境科學(xué)》2017年11期 　論文類(lèi)型：期刊論文

【摘要】：為了闡明在不同污染負(fù)荷下,水生植物對(duì)水體氮、磷、鉀等營(yíng)養(yǎng)鹽的削減效果及不同營(yíng)養(yǎng)水平下的生理響應(yīng),選用水質(zhì)凈化力強(qiáng)的漂浮植物水浮蓮和水葫蘆,探討其對(duì)污水處理廠一級(jí)A達(dá)標(biāo)排放尾水中氮、磷、鉀的去除效果及此過(guò)程中水生植物的生理生態(tài)學(xué)變化.結(jié)果表明,尾水經(jīng)過(guò)總長(zhǎng)80m的水浮蓮和水葫蘆組合配置的凈化塘后,水體TN、TP、TK分別由初始的11.97,1.69,8.10mg/L削減至5.23,1.10,4.73mg/L.隨著水體營(yíng)養(yǎng)鹽濃度的逐漸降低,水浮蓮和水葫蘆根冠比均有顯著增加,水浮蓮莖葉葉綠素a含量明顯降低,葉片微黃,而水葫蘆葉綠素a含量變化不大.2種漂浮植物根系中與氮、磷、鉀等營(yíng)養(yǎng)鹽相關(guān)的硝酸還原酶(NR)、Na~+-K~+ATP酶、H~+-K~+ATP酶均與水體氮、磷、鉀濃度負(fù)相關(guān),當(dāng)環(huán)境中濃度營(yíng)養(yǎng)鹽濃度較低時(shí),水生植物可通過(guò)提高根系中相關(guān)酶活性,滿足自己對(duì)營(yíng)養(yǎng)的高效吸收與利用.而水浮蓮根系的堿性磷酸酶(AKP)活力與水體氮、磷、鉀濃度呈正相關(guān).其中水葫蘆根系的Na~+-K~+ATP酶和H~+-K~+ATP酶相比于初始值分別提高了88.92%和103.20%.
[Abstract]:In order to elucidate the reduction effect of aquatic plants to nitrogen, phosphorus, potassium and other nutrients in water under different pollution loads and physiological response under different nutrient levels, the floating plants with strong water purification power, water phytoplankton and water hyacinth, were selected to study the effect of water phytoplankton and water hyacinth. The removal efficiency of nitrogen, phosphorus and potassium from tailwater to meet the first A standard of sewage treatment plant and the physiological and ecological changes of aquatic plants in the process were discussed. The results showed that the tail water was treated by a purifying pond with a combination of water florescence lotus and water hyacinth with a total length of 80 m. TNN TPN TK was reduced from 11.97 mg / L to 4.73 mg / L from 11.97 mg / L to 4.73 mg / L. with the decrease of water nutrient concentration, the root / shoot ratio of water florescence and water hyacinth increased significantly, the chlorophyll a content of stem and leaf decreased significantly, and the leaves were yellowish. However, the content of chlorophyll a in the roots of water hyacinth had little change. 2. The nitrate reductase (NRX) related to nitrogen, phosphorus, potassium and other nutrients were negatively correlated with the concentrations of nitrogen, phosphorus and potassium in the roots of water hyacinth, and the concentrations of H ~ -K- ATP were negatively correlated with the concentrations of nitrogen, phosphorus and potassium. When the concentration of nutrients in the environment was low, aquatic plants could satisfy their high efficiency absorption and utilization of nutrients by increasing the activity of related enzymes in their roots, while the activity of alkaline phosphatase (ALP) and water nitrogen and phosphorus in the roots of Acanthopsis japonicus could be improved. The Na ~ -K ~ ATP enzyme and H ~ -K ~ ATP enzyme of water hyacinth root increased by 88.92% and 103.20, respectively, compared with the initial value.
【作者單位】： 江蘇省農(nóng)業(yè)科學(xué)院農(nóng)業(yè)資源與環(huán)境研究所;
【基金】：國(guó)家自然科學(xué)基金項(xiàng)目(41501545) 江蘇省自然科學(xué)基金項(xiàng)目(BK20150549) 農(nóng)業(yè)部農(nóng)業(yè)環(huán)境重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金研究課題(KLAE201602)
【分類(lèi)號(hào)】：X173;X52

【相似文獻(xiàn)】

相關(guān)期刊論文 前3條

1 孫飛飛;尹桂平;范成新;崔廣柏;;藻華聚積及污水入流對(duì)太湖上下層水體營(yíng)養(yǎng)鹽含量的影響[J];水利水電科技進(jìn)展;2010年05期

2 高華梅;谷孝鴻;曾慶飛;毛志剛;周露洪;;不同基質(zhì)下菹草的生長(zhǎng)及其對(duì)水體營(yíng)養(yǎng)鹽的吸收[J];湖泊科學(xué);2010年05期

3 江天久;牛濤;應(yīng)文曄;;深圳市污染物排放總量與近岸水體營(yíng)養(yǎng)鹽變化的統(tǒng)計(jì)分析(IV)[J];海洋環(huán)境科學(xué);2007年01期

相關(guān)碩士學(xué)位論文 前1條

1 馬婷;水體營(yíng)養(yǎng)鹽對(duì)菹草生長(zhǎng)的影響[D];南京師范大學(xué);2007年

，

本文編號(hào)：1499652