本文選題：蒸發(fā)濃縮 + 高鹽廢水��； 參考：《河北工程大學(xué)》2015年碩士論文

【摘要】：隨著我國(guó)經(jīng)濟(jì)快速的發(fā)展,近年來環(huán)境污染問題日趨嚴(yán)重,水環(huán)境的污染,土壤的污染,大氣的污染,對(duì)我國(guó)人民的生活和健康造成了嚴(yán)重的影響。其中高含鹽廢水的排放對(duì)土壤和水體的污染不可小覷,由于我國(guó)對(duì)高鹽廢水的排放沒有明確的排放標(biāo)準(zhǔn),因此一些行業(yè)產(chǎn)生的高鹽廢水一般直接排放,對(duì)環(huán)境造成嚴(yán)重污染,不符合我國(guó)可持續(xù)發(fā)展戰(zhàn)略。本文在分析高鹽廢水處理現(xiàn)有技術(shù)的基礎(chǔ)上,開展了氣液接觸蒸發(fā)濃縮處理高鹽廢水,實(shí)現(xiàn)高鹽廢水的零排放。本文主要研究了雙相俱孔板的開孔形式、雙相俱孔板的傾斜角度、循環(huán)流量、風(fēng)量、廢水溫度、含鹽量、氣象條件對(duì)蒸發(fā)效果的影響。結(jié)果顯示:雙相具孔板的最佳開孔形式為SQH-03;最佳的傾斜角度為45度時(shí)更有利于高鹽廢水的濃縮蒸發(fā);循環(huán)流量和風(fēng)量對(duì)試驗(yàn)的影響趨勢(shì)相同,均是隨著風(fēng)量和循環(huán)流量的增大,蒸發(fā)量先增大后減小;廢水的溫度對(duì)蒸發(fā)的影響比較大,并且隨著廢水溫度的增大,蒸發(fā)量增大;而廢水含鹽量對(duì)蒸發(fā)的影響較小;不同空氣溫度和濕度對(duì)試驗(yàn)的影響顯示,空氣濕度和空氣溫度對(duì)氣液接觸蒸發(fā)濃縮裝置的蒸發(fā)量有一定的影響,隨著空氣濕度的增大,蒸發(fā)量不斷增大,并且影響較大。隨著空氣溫度的增大,蒸發(fā)量不斷的增大,影響較小。通過正交試驗(yàn),得出各影響因素對(duì)試驗(yàn)的影響程度大小的順序依次為:溫度流量風(fēng)量Na Cl濃度,最佳水平組合為:溫度為60℃,流量為4000L/h,風(fēng)量為234m3/h,Na Cl的濃度為15g/L。通過對(duì)質(zhì)、熱交換模型的推導(dǎo),得出計(jì)算蒸發(fā)量的計(jì)算公式并求出在不同溫度下的相應(yīng)系數(shù)k。針對(duì)氣液接觸蒸發(fā)系統(tǒng)處理熱電廠冷卻循環(huán)廢水設(shè)計(jì)了處理工藝流程。探討了高鹽廢水預(yù)加熱方式可以利用廢熱資源和太陽能。泥渣的處理方法選擇填埋的方式。蒸發(fā)水通過對(duì)其進(jìn)行冷凝回收。
[Abstract]:With the rapid development of China's economy, the environmental pollution problem is becoming more and more serious in recent years. The pollution of water environment, soil pollution and atmosphere pollution have caused serious impact on the life and health of the people in our country. The discharge of high salt wastewater can not be underestimated on the soil and water pollution. Because there is no clear discharge standard for high salt wastewater in our country, the high salt wastewater produced by some industries is generally discharged directly, which causes serious pollution to the environment. It does not accord with the sustainable development strategy of our country. On the basis of analyzing the existing technology of high-salt wastewater treatment, the gas-liquid contact evaporation concentrated treatment of high-salt wastewater was carried out, and the zero discharge of high-salt wastewater was realized. In this paper, the effects of the opening form of the biphasic hole-plate, the inclined angle of the biphasic hole-plate, the circulating flow rate, the air volume, the waste water temperature, the salt content and the meteorological conditions on the evaporation effect are studied. The results show that the optimum opening form of double-phase perforated plate is SQH-03, and the optimum inclination angle is 45 degrees, which is more favorable to the concentration and evaporation of high-salt wastewater, and the effect of circulating flow rate and air volume on the test is the same, both with the increase of air volume and circulating flow rate. Evaporation increased first and then decreased; the temperature of wastewater affected evaporation greatly, and with the increase of wastewater temperature, evaporation increased; the salt content of wastewater had little effect on evaporation; the effect of different air temperature and humidity on the experiment showed that, Air humidity and air temperature have a certain influence on evaporation capacity of gas-liquid contact evaporation condenser. With the increase of air humidity, evaporation quantity increases and has a great influence. With the increase of air temperature, evaporation increases continuously and the influence is small. By orthogonal experiment, the order of influence degree of each factor on the test is as follows: temperature flow rate, air volume, NaCl concentration. The best level combination is temperature 60 鈩，

本文編號(hào)：2116603