本文關(guān)鍵詞：固定化微生物技術(shù)在湖塘水體原位修復(fù)中的應(yīng)用研究　出處：《廣西大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 富營(yíng)養(yǎng)化 淺水湖塘 固定化微生物 原位修復(fù)

【摘要】：富營(yíng)養(yǎng)化狀態(tài)的持續(xù)發(fā)展會(huì)從根本上改變湖塘生態(tài)系統(tǒng)健康運(yùn)轉(zhuǎn)的初級(jí)生產(chǎn)力結(jié)構(gòu),導(dǎo)致湖泊生態(tài)系統(tǒng)結(jié)構(gòu)和功能退化,破壞生態(tài)平衡。本課題針對(duì)富營(yíng)養(yǎng)化水體原位修復(fù)的困難,設(shè)計(jì)制作一型可用于城鎮(zhèn)封閉式富營(yíng)養(yǎng)化淺水湖塘水體的固定化微生物原位修復(fù)裝置,利用固定化微生物技術(shù)生物濃度高,環(huán)境適應(yīng)性強(qiáng)的特點(diǎn),大量去除水體中的氮、磷和有機(jī)物,借助底泥中氮、磷模擬釋放實(shí)驗(yàn)、水體模擬修復(fù)實(shí)驗(yàn)確定工藝參數(shù),中試試驗(yàn)獲取穩(wěn)定的修復(fù)效果后,成功運(yùn)用于農(nóng)村水環(huán)境治理和城鎮(zhèn)景觀水體修復(fù)示范中。主要的結(jié)論為：(1)當(dāng)水體為中性時(shí),湖塘底泥中氮、磷的釋放對(duì)上覆水體中COD、 NH3-N和TP濃度的影響最小。以去離子水為上覆水的氮、磷釋放實(shí)驗(yàn)中,水體pH=7時(shí),釋放后上覆水中NH3-N濃度為1.86mg/L, TP濃度為0.09mg/L,兩者均為各實(shí)驗(yàn)組最小值,這與在湖塘水調(diào)整pH模擬釋放驗(yàn)證實(shí)驗(yàn)中的結(jié)果一致。(2)水體模擬修復(fù)實(shí)驗(yàn)中,載體柱設(shè)置深度和環(huán)境水體的pH對(duì)處理效果有顯著影響。設(shè)置于半水深時(shí)COD去除率為46.6%,NH3-N去除率為60.4%,優(yōu)于布設(shè)在水底部時(shí)的效果；環(huán)境水體的pH為7.0～8.0時(shí),固定化微生物對(duì)COD和NH3-N的處理效果最好,去除率分別為47%和80%；固定化微生物填料使用量對(duì)水體修復(fù)效果影響的實(shí)驗(yàn)中顯示,填料量的增加可以提高其對(duì)于水體中COD、NH3-N、TP的去除速率和去除量。(3)城鎮(zhèn)封閉式淺水湖塘水體修復(fù)中試試驗(yàn)的結(jié)果肯定了該型固定化微生物原位修復(fù)裝置對(duì)的水體中COD, NH3-N和TP的去除效果。兩階段的修復(fù)結(jié)束后,水體中COD, NH3-N和TP濃度顯著下降,其中COD和TP濃度20.1 mg/L,0.1 mg/L接近地表水環(huán)境質(zhì)量標(biāo)準(zhǔn)(GB3838-2002)中Ⅲ類水質(zhì)的要求,達(dá)到了預(yù)期目標(biāo)。(4)在為期一個(gè)月的農(nóng)村水環(huán)境治理和五個(gè)月的城鎮(zhèn)景觀水體修復(fù)示范項(xiàng)目中,該型固定化微生物原位修復(fù)裝置運(yùn)行穩(wěn)定,效果顯著。其中經(jīng)過(guò)修復(fù)后的穩(wěn)定塘水中COD, NH3-N和TP的濃度為18mg/L,1.7mg/L,0.2mg/L,景觀湖塘中COD, NH3-N和TP濃度下降至12.5mg/L,1.3mg/L,0.11 mg/L均達(dá)到或者接近地表水環(huán)境質(zhì)量標(biāo)準(zhǔn)(GB3838-2002)中Ⅴ水質(zhì)的要求,水體功能得到恢復(fù)。
[Abstract]:The sustainable development of eutrophication will change the primary productivity structure of Hutang ecosystem health operation fundamentally, leading to the structure and function of the degradation of lake ecosystem, destroy the ecological balance. The topic for the in situ remediation of eutrophic water difficult to design a type can be used in the town closed shallow eutrophic lake Hutang fixed microbial remediation device using immobilized microorganism biological characteristics of high concentration, strong adaptability to the environment, a large number of removal of nitrogen, phosphorus and organic matter in the sediment, with nitrogen, phosphorus release simulation experiments to determine the process parameters to repair the experimental water simulation test for repair effect is stable after successful application in the rural governance and the restoration of water environment of urban landscape water demonstration. The main conclusions are as follows: (1) when the water is neutral, nitrogen and phosphorus in the sediment of Hutang, released to the overlying water In COD, NH3-N and TP. The minimum concentration with deionized water as the overlying water nitrogen, phosphorus release experiment, water pH=7, after the release of the overlying water NH3-N concentration is 1.86mg/L, the concentration of TP was 0.09mg/L, both of which are the minimum value of each experimental group, and the adjustment of pH simulation in Hutang water release verify the consistency of the results. (2) repair water simulation experiment, carrier column setting depth and water environment of pH has a significant influence on the treatment effect. Set in half depth COD removal rate is 46.6%, the removal rate of NH3-N was 60.4%, better than in the bottom of the layout; environmental water pH is 7 to 8, the best treatment effect on COD and NH3-N immobilized microorganism, the removal rates were 47% and 80%; that of immobilized microorganism additive usage effect on the effect of water restoration experiments, the increase of filler amount can improve its water for COD, NH3-N, TP. Removal rate and removal rate. (3) the town closed test of shallow water in Hutang repair results confirmed the type of immobilized microorganism in situ repair device on the COD in the water, the removal effect of NH3-N and TP. The two stage of the repair after the water in COD, NH3-N and TP concentrations decreased significantly, which COD and TP concentration of 20.1 mg/L, 0.1 mg/L close to the surface water environment quality standard (GB3838-2002) quality class III requirements, to achieve the expected goal. (4) in the urban landscape water restoration demonstration project of rural water environment treatment for one month and five months, the immobilization of microorganisms in situ repair operation the effect is significant. The device is stable, stable after COD repair after the pond water, the concentration of NH3-N and TP for 18mg/L, 1.7mg/L, 0.2mg/L, NH3-N and COD in the landscape of Hutang, the concentration of TP decreased to 12.5mg/L, 1.3mg/L 0.11, mg/L reached to or close to the surface water environment The water quality is restored in the quality standard (GB3838-2002).

【學(xué)位授予單位】：廣西大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：X524

【參考文獻(xiàn)】

相關(guān)期刊論文 前6條

1 彭祺;鄭金秀;涂依;陳博;;污染底泥修復(fù)研究探討[J];環(huán)境科學(xué)與技術(shù);2007年02期

2 許海;劉兆普;袁蘭;楊林章;;pH對(duì)幾種淡水藻類生長(zhǎng)的影響[J];環(huán)境科學(xué)與技術(shù);2009年01期

3 王勇;;底泥中營(yíng)養(yǎng)物質(zhì)及其他污染物釋放機(jī)理綜述[J];工業(yè)安全與環(huán)保;2006年09期

4 ;Effects of overlying water aeration on phosphorus fractions and alkaline phosphatase activity in surface sediment[J];Journal of Environmental Sciences;2011年02期

5 毛志剛;谷孝鴻;陸小明;曾慶飛;谷先坤;李旭光;;太湖東部不同類型湖區(qū)疏浚后沉積物重金屬污染及潛在生態(tài)風(fēng)險(xiǎn)評(píng)價(jià)[J];環(huán)境科學(xué);2014年01期

6 何宗健;熊強(qiáng);焦立新;王圣瑞;;夏季滇池不同來(lái)源溶解性有機(jī)磷特征及其生物有效性[J];中國(guó)環(huán)境科學(xué);2014年12期

相關(guān)博士學(xué)位論文 前2條

1 王小雨;底泥疏浚和引水工程對(duì)小型淺水城市富營(yíng)養(yǎng)化湖泊的生態(tài)效應(yīng)[D];東北師范大學(xué);2008年

2 王瑩;滇池內(nèi)源污染治理技術(shù)對(duì)比分析研究[D];昆明理工大學(xué);2012年

，

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