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Image analysis application for the study of activated sludge floc size during the treatment of synthetic and real fishery wastewaters

機(jī)譯：圖像分析在合成和實(shí)際漁業(yè)廢水處理中研究活性污泥絮凝物尺寸的應(yīng)用

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Background, aim, and scope Fishery wastewater treatmentcan be compromised due to seasonal production. The use ofsequencing batch reactors is not completely successful,despite flexibility being one of the principal advantages.Most research on activated sludge is performed usingsynthetic wastewater to ensure a stable and constant feed.The current work compared biomass morphology andsettling ability using image analysis of synthetic and realfishery wastewaters, with and without NaCl addition.Results The final effluent presented higher turbidity forboth wastewaters after NaCl addition, and lower SVIvalues. For synthetic wastewater, NaCl addition led to thetotal aggregates' area (TA) increase from 1.46 to 2.09 mm2/μL, alongside the growth of intermediate aggregates intolarger aggregates. The addition of NaCl to the fisherywastewater led to a decrease of the TA from 4.43 to1.72 mm2/μL. The biomass composition decreased in largerand intermediate structures, opposite to the smaller aggregates'area percentage increase.Discussion NaCl addition to synthetic wastewater incitedflocculation increasing sludge settling ability. A slightaggregate disruption was responsible for a turbidityincrease. A strong deflocculation was identified in fisherywastewater with NaCl from the decrease of intermediateand large aggregates. This contrasted with pinpoint flocsrelease, which increased the turbidity levels.Conclusions, recommendations, and perspectives It couldbe established that synthetic wastewater biomass flocculationand fishery wastewater biomass deflocculation, observedduring 0.5% NaCl experiments, were related tosludge settling and effluent turbidity changes. Furthermore,the biomass changes obtained with synthetic wastewatercannot be extrapolated to fishery wastewater.
機(jī)譯：背景，目標(biāo)和范圍由于季節(jié)性生產(chǎn)，漁業(yè)廢水處理可能會(huì)受到影響。盡管靈活性是主要優(yōu)勢(shì)之一，但順序分批反應(yīng)器的使用并不完全成功?；钚晕勰嗟拇蠖鄶?shù)研究都是使用合成廢水進(jìn)行的，以確保穩(wěn)定和穩(wěn)定的進(jìn)料。目前的工作是通過(guò)合成和分離的圖像分析比較生物質(zhì)的形態(tài)和沉降能力。結(jié)果添加或添加了NaCl后，最終廢水的濁度均較高，而SVI值較低。對(duì)于合成廢水，NaCl的添加導(dǎo)致總骨料的面積（TA）從1.46增加到2.09 mm2 /μL，同時(shí)中間骨料又增長(zhǎng)為更大的骨料。向漁業(yè)廢水中添加NaCl導(dǎo)致TA值從4.43降至1.72 mm2 /μL。在較大和中間結(jié)構(gòu)中，生物量組成減少，與較小的聚集體面積百分比增加相反。討論在合成廢水中添加氯化鈉可促進(jìn)絮凝，增加污泥的沉降能力。輕微的總體破壞是導(dǎo)致濁度增加的原因。從中和大聚集體的減少中可以看出，NaCl在漁業(yè)廢水中有很強(qiáng)的去絮凝作用。結(jié)論，建議和觀點(diǎn)可以確定，在0.5％NaCl實(shí)驗(yàn)中觀察到的合成廢水生物質(zhì)絮凝和漁業(yè)廢水生物質(zhì)絮凝與污泥沉降和出水濁度變化有關(guān)。而且，合成廢水獲得的生物量變化不能外推到漁業(yè)廢水中。

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