污水處理外文翻譯---絮凝：污泥性質(zhì)和廢水處理的影響-環(huán)境工程-文庫吧資料
2025-05-21 22:50本頁面
【正文】 惡化?？紤]對(duì)他們的影響力，解決anddewatering 屬性時(shí)，需要考慮不同的陽離子和絮狀物（成絮狀物的摻入陽離子）之間的互動(dòng)和彼此之間（陽離子交換）。如果需要進(jìn)一步改善，長(zhǎng)期戰(zhàn)略是必不可少的。在曝氣池硝化的成就可能會(huì)進(jìn)一步改善活性污泥絮體的屬性。 結(jié)論 2 實(shí)驗(yàn)室和現(xiàn)場(chǎng)進(jìn)行了研究，評(píng)估調(diào)節(jié)選項(xiàng) ATAD 污泥脫水。研究，進(jìn)行陽離子聚合物和無機(jī)調(diào)理組合（三氯化鐵或明礬）陽離子聚合物。無機(jī)空調(diào)消除陰離子 biocolloids 有效。去除這些陰離子 biocolloids的可能是通過鐵羥基礦物相關(guān)降水量為混凝研究中觀察到。前凝血與無機(jī)調(diào)理污泥將減少溶液中的負(fù)電荷，從而消除了一些陽離子聚合物的需求。氯化鐵和明礬是更有效地消除較大規(guī)模的蛋白質(zhì)和多糖分子（大于 30K）。應(yīng)考慮使用無機(jī)化學(xué)混凝劑，在消化過程中釋放大量的蛋白質(zhì)，多糖和 COD 時(shí)發(fā)生。成本相近或低于，需要溫厭氧消化。 BIOFLOCCULATION: IMPLICATIONS FOR ACTIVATED SLUDGE PROPERTIES AND WASTEWATER TREATMENT ABSTRACT Studies were conducted to determine the role of bioflocculation in the unit processes. Laboratory and fullscale studies revealed that bioflocculation is important in determining settling, dewatering, effluent and digested sludge properties(activated sludge properties) and may be vital to the function of all processes related to the above properties. In these studies, it was shown that divalent cations such as calcium and magnesium improved activated sludge properties, whereas monovalent cations such as sodium, potassium and ammonium ions were detrimental to these properties. The divalent cations promoted bioflocculation through charge bridging mechanisms with negatively charged biopolymers (mainly protein and polysaccharide). It was found that oxidized iron plays a major role in bioflocculation and determination of activated sludge properties through surface interactions between iron and biopolymers. Oxidized iron was effective in removing colloidal biopolymers from solution in coagulation and conditioning studies. The research included experiments evaluating effects of potassium and ammonium ions on settling and dewatering properties。 effects of sodium, potassium, calcium and magnesium on effluent quality。 and evaluation of floc properties during aerobic and thermophilic digestion. A floc model is proposed in which calcium, magnesium and iron are important to bioflocculation and the functionality of aeration tanks, settling tanks, dewatering equipment and aerobic or anaerobic digesters. It is shown that activated sludge floc properties affect wastewater treatment efficiency. Keywords ： Cation, activated sludge, settling, dewatering, magnesium, ammon
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