Treatment of the Combined Sludges of Machine Factories

Aksenov, V. I.; Царев, Н. С.; Yasnitskaya, K.

doi:10.1016/j.proeng.2016.07.302

Cited by 6 publications

(2 citation statements)

References 23 publications

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“…One of the main application areas of flocculants is industrial wastewater sludge conditioning [17,18]. As for Sverdlovsk region an actual task is ferrous metallurgy enterprises negative impact on human health and the environment, we chose the research subject devoted to sludge processing, which is formed during metal surface chemical treatment aggressive wastewater purification.…”

Section: Introductionmentioning

confidence: 99%

Chemical Selection for Flocculation of the Sludges Produced During Lime Neutralization of Acidic Spent Pickling Solutions and Rinse Water from Steel Pipe Mill

Царев¹,

Tatyannikova²

2020

Kms

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Acidic spent pickling solutions and rinse water are produced during steel pipe acid pickling. They are usually neutralised with lime in a neutralisation plant and pumped in the form of a wet sludge to a landfill. This is one of the main environmental issues of Russian steel mills. The implementation of sludge treatment units, including equipment for sludge polymer conditioning and dewatering, is an import consideration when seeking to reduce the impact of steel mills on human health and the environment. The researches results of polymer conditioning of the aggressive wastewater sludges by flocculants are reflected in the paper. Sludge samples were obtained from the neutralisation plant of an Ural’s steel pipe mill. Sludges of two types were investigated: the sludge which is formed in clarifiers during spent pickling solutions neutralization with lime and the sludge which is formed in clarifiers during rinse water neutralization with lime. During the work non-ionic, cationic, and anion flocculants Praestol® efficiency was estimated. The shortest time of water capillary suction from the flocculated sludge was accepted as efficiency criterion of flocculant processing. It was defined with use of the capillary suction timer Fann® and Whatman® 17 chromatographic paper. It is established that: non-ionic focculant Praestol® 2500 dose of 4–5 g/kg dry solids is effective for conditioning of the sludge produced during lime neutralization of acid spent pickling solutions; the anionic flocculant Praestol® 2540 dose of 1.5–2 g/kg dry solids is effective for conditioning of the sludge produced during lime neutralization of acid rinse water. The empirical response surfaces and the contour plots showing the relationship between capillary suction time and a dosage of flocculant and a charge density (% hydrolysis) of a flocculant were reveived. Keywords: steel pipe mill, acid pickling, wastewater, sludges, flocculants, capillary suction time

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Section: Introductionmentioning

confidence: 99%

Chemical Selection for Flocculation of the Sludges Produced During Lime Neutralization of Acidic Spent Pickling Solutions and Rinse Water from Steel Pipe Mill

Царев¹,

Tatyannikova²

2020

Kms

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“…Paraffin oils keep the asphalt materials in a soluble state so that they do not precipitate as hard charcoal when heated. Petroleum oils or oils with cleansing properties prevent scale and flake formation [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Latest Reports in Managing Acidic Sludge of Used Motor Oil Reprocessing Industries

Hassanpour

2020

Glob. Environ. Eng.

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Used Motor Oils Recycling (UMOR) can be fulfilled in different ways depending on the quality and quantity of the fresh oil and the quality of the collected UMO. The Acidic Sludge (AS) is a byproduct of UMOR with hazardous effects and impacts on the environment. It yields 0.15 of each barrel (220 liters) of UMOR operation. The valid and relevant databases were used to discover the latest reports in managing the AS of UMOR operation. The findings of the current review were oriented towards the physical-chemical backbone of AS and its industrial exploitation. The chemical structure of AS was highlighted by a glance view in the recent reports. To sum up, it was recommended to utilize this valuable byproduct in many industrial applications as an additive.

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Processing of industrial wastewater sludges formed in the production of high-strength and corrosion-resistant steels for power constructions of space technology

Царев

Yasnitskaya

Ivanova

2019

XLIII ACADEMIC SPACE CONFERENCE: Dedicated to the Memory of Academician S.P. Korolev and Other Outstanding Russian Scientists –

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Treatment of the Combined Sludges of Machine Factories

Cited by 6 publications

References 23 publications

Chemical Selection for Flocculation of the Sludges Produced During Lime Neutralization of Acidic Spent Pickling Solutions and Rinse Water from Steel Pipe Mill

Chemical Selection for Flocculation of the Sludges Produced During Lime Neutralization of Acidic Spent Pickling Solutions and Rinse Water from Steel Pipe Mill

Latest Reports in Managing Acidic Sludge of Used Motor Oil Reprocessing Industries

Processing of industrial wastewater sludges formed in the production of high-strength and corrosion-resistant steels for power constructions of space technology

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