無電壓作用離子交換膜分離去除水中錳離子的研究

摘要：研究了離子交換膜在無外加電壓的條件下分離去除原水中錳離子的技術(shù),探討了錳離子濃度、補(bǔ)償離子鉀離子摩爾濃度、水力攪拌速度、溫度和水力停留時(shí)間(HRT)等對(duì)去除效果的影響.實(shí)驗(yàn)結(jié)果表明,當(dāng)原水中二價(jià)錳離子初始摩爾濃度為0.072 7 mmol/L (即4 mg/L)左右時(shí), 在下述的實(shí)驗(yàn)條件下:水溫為(25±1) ℃,水力停留時(shí)間HRT為6 h,水力攪拌速度為(600±25) r/min,補(bǔ)償離子鉀離子的摩爾濃度是原水中錳離子摩爾濃度的20倍,錳離子去除率達(dá)到80%.此外,在實(shí)驗(yàn)裝置不改變的條件下,進(jìn)水錳離子摩爾濃度增加到0.727 mmol/L (即40 mg/L)左右時(shí),去除率會(huì)降低到66%;補(bǔ)償鉀離子摩爾濃度與進(jìn)水錳離子摩爾濃度的比值大于20后,再增加其比值,對(duì)去除率影響不大;降低攪拌速度到(300±25) r/min,去除率降低到51%;降低水溫到(16±1) ℃,去除率降低到60%;水力停留時(shí)間(HRT)大于6 h后,再增加水力停留時(shí)間到12 h,去除率無明顯改變.Abstract：The removal of manganese ion from water with an ion-exchange membrane under no external voltage condition was studied, and the effects, such as manganese ion concentration, the concentration of compensation potassium ions, water stirring speed, temperature and hydraulic retention time (HRT) on the removal efficiency of manganese ions were also evaluated. The results have shown that, when the initial concentration of bivalent ion Mn~(2+) is 0.0727 mmol/L (4 mg/L), under the experimental conditions of the water temperature of 25 ℃, HRT of 6 h, hydraulic mixing speed of (600±25) r/min, and the concentration of the compensation ion K~+ is 20 times that of Mn~(2+) , the removal efficiency of 80% for the manganese can be achieved. In addition, with the equipments unchanged, when the inlet concentration of manganese increases to 0.727 mmol/L (40 mg/L), the removal efficiency will be lowered to 66%; while the ratio of the concentration of compensation potassium ions to that of inlet manganese is higher than 20, the removal efficiency will not change significantly, if the ratio continues to increase; by lowering the stirring speed to (300±25) r/min, the removal efficiency will be decreased to 51%; by lowering the temperature to (16±1) ℃,the removal efficiency is 60%; when the hydraulic retention time(HRT) is more than 6 h, the removal efficiency will not undergo any significant change by increasing HRT to 12 h. 作者： 謝德華[1]施周[2]陳世洋[2]謝鵬[2]宋勇[2] Author： 作者單位： 湖南大學(xué),土木工程學(xué)院,湖南,長(zhǎng)沙,410082;湖南科技大學(xué),土木工程學(xué)院,湖南,湘潭,411201湖南大學(xué),土木工程學(xué)院,湖南,長(zhǎng)沙,410082 期 刊： 湖南大學(xué)學(xué)報(bào)（自然科學(xué)版）   ISTICEIPKU Journal： JOURNAL OF HUNAN UNIVERSITY(NATURAL SCIENCES) 年，卷(期)： 2010, 37(4) 分類號(hào)： X505 關(guān)鍵詞： 離子交換膜    唐南分離    重金屬    錳離子    Keywords： ion exchange membrane    donnan dialysis    heavy metal    manganese    機(jī)標(biāo)分類號(hào)： TG1 TH1 機(jī)標(biāo)關(guān)鍵詞： 外加電壓    離子交換膜    膜分離    除水    錳離子濃度    Application    removal efficiency    摩爾濃度    水力停留時(shí)間    hydraulic retention time    去除率    攪拌速度    HRT    鉀離子    potassium    water temperature    補(bǔ)償離子    原水    實(shí)驗(yàn)條件    ions 基金項(xiàng)目： 國(guó)家自然科學(xué)基金資助項(xiàng)目

【無電壓作用離子交換膜分離去除水中錳離子的研究】相關(guān)文章：

納米分子篩和硅藻土吸附去除水中錳離子的研究05-02

生物法去除水中重金屬離子的研究04-30

離子交換回收電鍍廢水中六價(jià)鉻的研究04-26

高錳酸鉀和氯氣去除水中錳的應(yīng)用04-29

高錳酸鉀和氯氣去除水中錳的應(yīng)用04-25

利用沸石去除電鍍廢水中重金屬離子的試驗(yàn)研究04-30

原油對(duì)離子交換膜的污染及機(jī)理研究04-30

輝沸石的吸附與離子交換性能的研究05-02

高分子凝膠球去除廢水中重金屬離子的研究04-25

13X分子篩去除水中重金屬離子的研究04-30