污水處理外文翻譯---絮凝：污泥性質和廢水處理的影響-環(huán)境工程-資料下載頁
2025-05-11 22:50本頁面
【導讀】進行研究，以確定在激活的絮凝作用污泥單元過程。實驗室和完整的大型。泥屬性），并可能涉及到的所有進程的功能是至關重要的。銨離子，不利于這些屬性?！岸r陽離子通過銜接機制，促進負責絮凝帶負電。荷的生物大分子。結果發(fā)現(xiàn)，氧化鐵起著重大作用，在?；钚晕勰嗟男跄蜎Q心通過鐵和生物大分子之間的表面相互作用的性質。有效地消除從凝固的膠體溶液聚合物和空調的研究。這項研究包括鉀的實驗評估。質量;固體停留時間，對出水水質的影響;絮狀物評估在有氧和高溫消化的屬性。備和好氧或厭氧沼氣池。結果表明，活性污泥絮狀物性能的影響廢水處理效率。因此，除了規(guī)定的化學品在工業(yè)過程和。子缺陷，將包含他人的過多。單價離子的增加導致活性污泥脫水性能的惡化，而。D比值的相關問題。本研究的目的是評估nonfilamentous沉降和脫水的問題進行鑒定的潛力，沉降和脫水性能由于高濃度的鈉離子。應考慮使用無機化學混凝劑，在消化過程中釋放大量的蛋白質，多。的中溫曝氣和利用明礬。
【正文】 explore other alternatives for pH control. Achievement of nitrification in the aeration basin may further ameliorate activated sludge floc properties. The effect of nitrification on activated sludge properties require further exploration. Conclusions2 Laboratory and field studies were conducted to evaluate the conditioning options for the dewatering of ATAD biosolids. The objective of this study was to investigate opportunities to reduce chemical conditioning costs. Studies were conducted using cationic polymer and a bination of inorganic conditioners (ferric chloride or alum)and cationic polymer. This study indicated that inorganic conditioners such as ferric chloride and alum were very effective in reducing conditioning chemical requirements, thereby reducing operation costs, for ATADs. The inorganic conditioners were effective in removing anionic biocolloids. Removal of the anionic biocolloids occurred prior to achieving charge neutralization. The removal of these anionic biocolloids may be through ferric hydroxy mineral associated precipitation as observed in the coagulation study. The conditioning mechanisms associated with cationic polymer is through charge neutralization. Precoagulation of biosolids with inorganic conditioners will reduce the negative charges in solution, thereby eliminating some of the cationic polymer demand. The different mechanisms lead to different conditioning requirements. Ferric chloride and alum were more effective in removing larger sized protein and polysaccharide molecules (greater than 30K). The inorganic coagulants were also more effective then the biopolymer and COD release was greater. The use of inorganic chemical coagulants should be considered when large release of protein, polysaccharide and COD occur during the digestion process. A bination of mesophilic aeration followed by conditioning with alum and cationic polymer flocculant greatly reduced conditioning chemical costs at College Station. The costs were similar to or lower than that required for mesophilic anaerobic digestion. Filtrate recycle COD was much reduced and inplant foaming at College Station was largely eliminated by employing a bination of mesophilic aeration and using alum.
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