本文選題：鼓風(fēng)曝氣機(jī) + 浮島型浮筒��； 參考：《揚(yáng)州大學(xué)》2015年碩士論文

【摘要】：曝氣機(jī)是曝氣充氧技術(shù)的主角,其性能直接影響曝氣效果和效率,被廣泛應(yīng)用于污水處理、景觀水體水質(zhì)改善工程和水產(chǎn)養(yǎng)殖等行業(yè)。傳統(tǒng)的曝氣設(shè)備可以分為鼓風(fēng)曝氣、機(jī)械曝氣、射流曝氣三類,其原理不同,優(yōu)缺點(diǎn)各異,其中鼓風(fēng)曝氣增氧效果最好,但需要建設(shè)鼓風(fēng)機(jī)房和曝氣管網(wǎng),投資大；機(jī)械曝氣安裝維護(hù)方便,但在水面曝氣,增氧效果差,射流曝氣在水下曝氣,效率低,易堵塞。在分析現(xiàn)有產(chǎn)品優(yōu)缺點(diǎn)的基礎(chǔ)上,設(shè)計(jì)出了一種集水面和水下曝氣優(yōu)點(diǎn)的干室潛水式鼓風(fēng)曝氣機(jī),并在現(xiàn)場進(jìn)行了初步試驗(yàn),取得了良好的效果。其主要結(jié)果如下：1、創(chuàng)新性的提出了干室潛水式鼓風(fēng)曝氣機(jī)的結(jié)構(gòu)形式。新型曝氣機(jī)由一體化浮島型浮筒和固定在浮筒下部的曝氣管路組成,風(fēng)機(jī)安裝在浮筒內(nèi),由U形連通管連接風(fēng)機(jī)和曝氣管路。裝置既是干室的又是潛水的,浮筒內(nèi)所有設(shè)備無需考慮水密封問題,管路系統(tǒng)中不設(shè)任何閥門,因此效率高,安裝維護(hù)方便。2、設(shè)計(jì)了旋轉(zhuǎn)和固定式兩種微孔曝氣方式。通過在曝氣管上設(shè)計(jì)向上的微孔曝氣頭和側(cè)向噴氣孔,高壓氣體由U形連通管經(jīng)密封旋轉(zhuǎn)軸承進(jìn)入曝氣管后,大部分氣體由微孔曝氣頭向上曝氣,小部分由側(cè)向噴氣孔噴出,在反作用力推動下,曝氣管繞浮筒做3600旋轉(zhuǎn),達(dá)到了旋轉(zhuǎn)曝氣的目的。同時設(shè)計(jì)了固定式的微孔曝氣裝置,計(jì)算了曝氣管路阻力。3、制作了1臺功率為1.5KW的干室潛水式鼓風(fēng)曝氣機(jī),并在池塘進(jìn)行了現(xiàn)場試驗(yàn)。結(jié)果表明,干室潛水式鼓風(fēng)曝氣機(jī)對不同水深的水體有強(qiáng)烈的攪拌混合作用,隨著開機(jī)時間增加,不同水深溶解氧濃度將會趨于一致,其影響半徑約為15m,開機(jī)90min后水深0.3m處溶解氧濃度增加13.35%,水深0.9m處溶解氧濃度增加34.39%,水深1.5m處溶解氧濃度增加80.21%。4、干室潛水式鼓風(fēng)曝氣機(jī)對其曝氣管范圍內(nèi)的水質(zhì)起到一定的改善作用。試驗(yàn)中連續(xù)開機(jī)12小時,水體中高錳酸鉀指數(shù)最大去除率達(dá)到29.8%,氨氮最大去除率達(dá)到48.7%。而葉綠素的去除雖然也有效果,但是規(guī)律并不明顯。5、干室潛水式鼓風(fēng)曝氣機(jī)運(yùn)行穩(wěn)定可靠。固定式微孔曝氣裝置除風(fēng)機(jī)外沒有運(yùn)動部件,且通風(fēng)散熱良好,在試驗(yàn)水體運(yùn)行6個月,其中通過連續(xù)運(yùn)行72小時考驗(yàn),性能穩(wěn)定。
[Abstract]:Aerator is the protagonist of aeration and oxygenation technology, and its performance directly affects the aeration effect and efficiency. It is widely used in wastewater treatment, landscape water quality improvement engineering and aquaculture industry. The traditional aeration equipment can be divided into three types: blast aeration, mechanical aeration and jet aeration. Its principle is different, and its advantages and disadvantages are different. The installation and maintenance of mechanical aeration is convenient, but the effect of aeration on water surface is poor, the jet aeration is underwater aeration, the efficiency is low, and the aeration is easy to be blocked. Based on the analysis of the advantages and disadvantages of the existing products, a dry chamber diving blower aerator is designed, which combines the advantages of surface aeration and underwater aeration, and a preliminary test is carried out in the field, and good results are obtained. The main results are as follows: 1. The structure of dry-chamber diving blast aerator is innovatively proposed. The new aerator consists of an integrated floating island buoy and an aerated pipe fixed in the lower part of the buoy. The fan is installed in the buoy and connected by a U-shaped connected pipe to connect the fan and the aerated pipe. All the equipment in the buoy does not need to consider the problem of water seal, there is no valve in the pipeline system, so it has high efficiency, convenient installation and maintenance. Two kinds of micropore aeration modes, rotating and fixed, are designed. Through the design of an upward microporous aerator and a lateral jet hole on the aeration pipe, after the high pressure gas is entered into the aeration pipe by a U-shaped connected tube through a sealed rotating bearing, most of the gas is aerated upward by the microporous aeration head, and a small part is ejected from a lateral jet hole. Under the push of reaction, the aerator rotates around the buoy 3600, which achieves the purpose of rotating aeration. At the same time, a fixed microporous aeration device was designed, and the resistance of aeration pipe was calculated. A dry chamber submersible blower aerator with power of 1.5KW was made, and the field test was carried out in the pond. The results show that the dry chamber diving air aerator has a strong mixing effect on the water body with different water depth, and the dissolved oxygen concentration of different water depth will tend to be consistent with the increase of start-up time. The influence radius is about 15m.The dissolved oxygen concentration at 0.3m water depth, the dissolved oxygen concentration at 0.9m water depth and the dissolved oxygen concentration at 1.5m water depth are increased 13.35 and 34.39m respectively, and the water quality in the aerator is increased by dry-chamber snorkel aerator at 1.5m. To a certain degree of improvement. The maximum removal rate of potassium permanganate index and ammonia nitrogen were 29.8and 48.7 respectively. Although the removal of chlorophyll also has effect, the rule is not obvious. 5. The dry chamber diving air aerator runs stably and reliably. The fixed microporous aeration device has no moving parts except the fan and has good ventilation and heat dissipation. It runs in the experimental water for 6 months, and the performance is stable after 72 hours of continuous operation.
【學(xué)位授予單位】：揚(yáng)州大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：X703

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