Wastewater purification at OAO EVRAZ NTMK by means of coke filters

详细信息    查看全文

• 作者：E. A. Yakusheva ; A. A. Feodory ; A. L. Baranov
• 关键词：dry ; quenched coke ; wastewater purification ; oil identification ; rainwater runoff ; coke filters
• 刊名：Coke and Chemistry
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：58
• 期：6
• 页码：227-228
• 全文大小：69 KB
• 参考文献：1.Kaznacheev, Yu.D., Voronina, T.B., Surinova, S.I., et al., The use of coal to purify oil-emulsion waste, Khim. Tverd. Topl., 1977, no. 4, pp. 129-30.
  2.Kaznacheev, Yu.D., Voronina, T.B., Surinova, S.I., et al., The use of coal to purify industrial oil-emulsion wastewater, Khim. Tverd. Topl., 1978, no. 1, pp. 52-6.
  3.Ettinger, I.A., Industrial tests on the removal of petro-leum products from industrial waste by natural coal, Khim. Tverd. Topl., 1980, no. 5, pp. 143-46.
  4.Surinova, S.I., Kazakov, V.A., Pavlov, V.V., et al., Sorp-tional purification of coke-production wastewater by K2 coal, Koks Khim., 1981, no. 1, pp. 55-6.
  5.Signalova, P.A., Galutkina, K.A., and Tubolkin, A.F., Phenol extraction from aqueous solutions by lignite semicoke, Zh. Prikl. Khim., 1984, no. 5, pp. 1119-121.
  6.Evzel’man, I.B., Kogan, L.A., and Andryushechkina, T.V., Sorptional purification of coke-production wastewater by means of lignite semicoke, Koks Khim., 1978, no. 11, pp. 49-1.
  7.Stepanov, Yu.V., Yakusheva, E.A., Rachkova, E.A., et al., Sorptional purification of coke-production wastewater by means of coke filters, Koks Khim., 1993, no. 3, pp. 33-5.
  8.Feodori, A.A. and Stepanov, Yu.V., Identification of lubricants in the wastewater from metallurgical shops, Coke Chem., 2010, vol. 53, no. 7, pp. 267-68.CrossRef
  
• 作者单位：E. A. Yakusheva (1)
  A. A. Feodory (1)
  A. L. Baranov (1)
  
  1. OAO EVRAZ NTMK, Nizhnii Tagil, Russia
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Russian Library of Science
  
• 出版者：Allerton Press, Inc. distributed exclusively by Springer Science+Business Media LLC
• ISSN：1934-8398

文摘

Since 1993, coke filters have been used at OAO EVRAZ NTMK to remove oils from water. Dry-slaked metallurgical coke (piece size 25-0 mm) is used as the adsorbent. This method removes 60% of the oil from the water; the filter contains 1.5 t of coke; its working life is 30-0 days. The spent coke is used in the blast furnace. Despite the prolonged use of adsorption systems to remove oil from water, coke filters were not widely adopted for a long time. All the shops at OAO EVRAZ NTMK use petroleum-based industrial oil, motor oil, and hydraulic oil, whose contact with surface water or runoff could pollute lakes and streams. The central laboratory of coke production at OAO EVRAZ NTMK, in collaboration with the environmental staff, has created a database for the identification of oils and the determination of how they end up in the sewer system. The composition of 83 samples was determined on a Tsvet 800 chromatograph and a Shimadzu GCMC QP 2010 chromatomass spectrometer. Oil was extracted from rainwater by means of benzene. Determination of the oil’s composition permitted the identification of how it was implicated in water pollution. Of 50 water samples with a minimal oil concentration of 50 mg/L (the minimum level for reliable identification), 40% were found to be contaminated with oil. Since 2009, coke filters have been used for sorptional purification of rainwater in the metallurgical region of OAO EVRAZ NTMK, on the basis of experience in coke production. The sorbent employed is dry-quenched coke. The steel girdles (volume 1.5 m3) with perforated walls that hold the coke are combined in groups and placed in special boxes. The filters are installed at locations where runoff drains through bypass collectors into rivers. The total rate of rainwater runoff is 1500 m3/h. The coke is replaced twice per month; the spent coke is used in blast-furnace batch. The coke filters ensure an oil content of the rainwater runoff that is within the public health limits (0.3 mg/L). The use of coke produced at OAO EVRAZ NTMK to purify the surface rainwater is very effective and economically expedient. Keywords dry-quenched coke wastewater purification oil identification rainwater runoff coke filters