Guideline for Hazarsous Liguid Waste Designing Disposal Methods by Evaporation Lagoons

Subject Areas : environmental management

Amir Hesam Hasani ¹ , Amir Hossain Javid ² , Faramarz Naseri ³

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Received: 2006-03-11 Accepted : 2006-05-05 Published : 2010-06-22

Keywords: Evaporation lagoon, hazardous liquid waste, Designing Guideline,

Abstract :

One of the most important issues in environmental science and technology is disposal of hazardous liquid waste, which should be done based on engineering rules and specific standards. Therefore investigation on different ways of disposal is important, considering geographic and climate condition and economic status in order to select suitable and optimum approach. In the present research after recognition and classification of hazardous liquid waste, their environmental effects and international standards and rules are investigated, and then different methods of disposal are presented. Considering Irans climate and economic situation, therefore, evaporation lagoon as a technical method of disposal is investigated, and then this system by using Isfahans rain fall and evaporation values (from 1991 to 2000) and assuming waste water maximum flow 14300 m3/year has been designed for a decade and simulated model. According to the results, recommended evaporation pond should be 124 (m) in length, 62(m) in width, 2.5(m) in depth and 1:2 in slope. By controlling the system, maximum depth of waste water in lagoon must be 1.76(m) during operation of 10 years period time.