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METHOD AND SYSTEM FOR THE CRYSTALLISATION OF STRUVITE FOR RECOVERING PHOSPHATES IN WASTEWATER
METHOD AND SYSTEM FOR THE CRYSTALLISATION OF STRUVITE FOR RECOVERING PHOSPHATES IN WASTEWATER
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机译:用于回收废水中磷酸盐的鸟粪石的结晶方法和系统
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摘要
The invention relates to a method and a system for struvite crystallization of in order to recover phosphates in urban or industrial wastewater preferably having phosphate concentrations higher than 50 mg P/L, more preferably higher than 100 mg P/L, where phosphates are recovered by means of the crystallization thereof in the form of struvite granules, the diameter of which can reach up to 5 mm. The struvite crystallization system is formed by a crystallizer (1), a decanter (2) with a distribution system (9), and a unit for adding industrial magnesium hydroxide (3). The phosphates are recovered from the wastewater as a result of two steps : a step of growing struvite granules, and a step of growing fine struvite crystals.
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机译:用于鸟粪石结晶的方法和系统技术领域本发明涉及鸟粪石结晶的方法和系统,以回收优选磷酸盐浓度高于50mg P / L,更优选高于100mg P / L的城市或工业废水中的磷酸盐,其中通过结晶为鸟粪石颗粒形式的结晶,其直径可达到5mm。鸟粪石结晶系统由结晶器(1),具有分配系统(9)的倾析器(2)和用于添加工业氢氧化镁的单元(3)形成。通过两个步骤可从废水中回收磷酸盐:生长鸟粪石颗粒的步骤和生长精细鸟粪石晶体的步骤。
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