2.1. Process selection criteriaCyanide destruction plants must be reliable all the time to produce streams with acceptable water quality that can be discharged to the environment. The treatment systems should allow recycling of solutions that do not meet the discharge criteria during plant upsets and should be installed with a continuous online monitoring device. The treatment process should not produce undesirable by-products and should be able to remove harmful byproducts such as ammonia and metals. It should be appropriate to sitespecific climatic conditions (e.g. temperature, precipitation), solution chemistry and discharge requirements. The capital and operational costs should suit the mining production conditions such as production rate and life expectancy.
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