進入2005年后，公司根據曝氣設備落后于我國污水處理領域快速發展現狀，迅速轉型曝氣設備的創新研制，經過十多年的的研發與實踐檢驗，擁有了以潛浮式曝氣機和推流器系列產品為核心的污水處理系列裝備。同時榮獲中國4項和美國4項發明專利（1.潛浮式曝氣機,專利號200610168196.0；2.由導氣筒直接進氣的潛浮式曝氣機，專利號200710165152.7；3.回轉潛浮式曝氣機，專利號200810089642.8；4.多向潛浮式曝氣機，專利號200910160936.X；5.Submersible Hollow Shaft Motor and Submersible Floating Aerator Comprising the Same，專利號7661658；6.Swing-Type Submersible Floating Aerator，專利號7661659；7.Multi-directional Submersible Floating Aerator，專利號7934705；8.Aeration Ship, 專利號8998179），在國際、國內首創了中層曝氣的新概念；在污水處理，生態修復領域完成了對傳統曝氣方式的一次革命突破；將沿用了逾百年的傳統曝氣方式推向新紀元。
Shandong Yida Environmental Technology & Engineering Co., Ltd. is a hi-tech company established in 1994. During past twenty-two years, Yida has been dedicated in innovation, re-innovation, practice and re-practice in industrial and municipal sewage treatment, ecological restoration and nitrogen removal of surface water. Our company has successfully completed a range of sewage treatment turnkey projects for many customers by implementing state-of-the-art technologies. We used highly efficient technologies in various industrial sewage projects to achieve the goal of low investment and operating costs. The effluent quality remains high and stable. Since the after-sale service has been excellent, our company won great reputation from the customers and the environmental protection agencies. In August 1999, the State Environmental Protection Bureau awarded our company the Certificate of Environmental Engineering Design.
Since the progress of aeration equipments lagged far behind the quick development of sewage treatment market demand in China, our company shifted to the innovation of new aeration devices in 2005. After ten years of research and development, our company has successfully developed the submersible floating aerator and mixer as core equipments for wastewater treatment plants. We created “middle-layer aeration”, a new concept that starts a new epoch in conventional aeration industry.
The Upgrading of digital controlled swing-type submersible floating push-flow aerator/mixer defines the following five aspects.
(1) The comprehensive above-water installation of aerator/mixer is the solution to the continuing overcapacity, lacking of operating repairs of equipment, and the decline of treatment capacity of WWTP.
(2) The accurate aeration thanks to separate and combined operation of dual modes(aeration/mixing) is the solution to the paradox of low sludge activity(MLVSS/MLSS) and high sludge concentration. The power of push-flow and mixing drains the inorganic substance and settled sludge effectively. The energy changes the unbalanced state of the activated sludge swiftly. Thus the effluent quality remains good and stable.
(3) The dual-mode accurate aeration is the solution to the traditional method, which is, increasing air-intake of the aeration system results in high DO level and low denitrification effect. The effluent NH3-N level is far beyond the standard. Instead, by installing the submersible floating aerator, simultaneous nitrification and denitrification (SND) can be completed in the same basin. The denitrification process does not require multi-basin treatment any more.
(4) Under the premise that the standard oxidation ditch process remains the same, the operation of the submersible floating aerator/mixer can ensure high turbulence level, high density of activated sludge, high sludge quantity, and dynamically balanced performance in whole sewage treatment process. As a result, bio-denitro and bio-denipho process is upgraded. Little carbon source is added to the municipal sewage and chemical agent for phosphorus removal is reduced.
(5) Last and the most important point is that no sludge accumulation is allowed in each treatment phase, otherwise good and stable effluent cannot be guaranteed.
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