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Water 2018, 10(4), 438; https://doi.org/10.3390/w10040438

Research on the Treatment and Comprehensive Utilization of Phenylhydrazine Hydrochloride Effluent

School of Chemistry and Chemical Engineering, Qufu Normal University, Shandong 273165, China
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Received: 28 February 2018 / Revised: 30 March 2018 / Accepted: 4 April 2018 / Published: 7 April 2018
(This article belongs to the Section Water and Wastewater Treatment)
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Abstract

In the production process of 1 ton of phenylhydrazine hydrochloride (PHH); ~10 tons of liquid waste are formed, which includes multiple contaminants but also recyclable resources. In order to realize the recyclingof residual PHH in liquid waste; a liquid ammonia neutralization method is utilized, and extraction-reextraction technology is adopted. As a result, the recovery rate of PHH reachedup to 90.0%. Meanwhile, 3.8 tons of ammonium salts can be obtained after the iquid ammonia neutralization reaction which can be reused as raw materials for compound fertilizer. During the treatment process, there is no discharge of the three wastes, which meets the requirements of harmless treatment. Finally, these results provide important reference values for PHH production enterprises to solve the problems of waste pollution and to achieve recycling of resources. View Full-Text
Keywords: phenylhydrazine hydrochloride; extraction-reextraction; evaporating concentration; ammonium salts phenylhydrazine hydrochloride; extraction-reextraction; evaporating concentration; ammonium salts
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Liu, X.; Zhou, D.; Zhang, H. Research on the Treatment and Comprehensive Utilization of Phenylhydrazine Hydrochloride Effluent. Water 2018, 10, 438.

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