响应面法优化污泥厌氧消化液的化学除磷研究

发布时间：2018-04-15 05:30

  本文选题：厌氧消化液 + 磷回收　； 参考：《应用化工》2017年09期

【摘要】：剩余污泥厌氧消化液中含有丰富的磷,是磷回收的重要来源之一。采用Box-Benhnken中心组合试验原理和响应面分析法,研究了以铝盐为除磷剂回收厌氧消化液中磷源的过程中,Al∶P比、快速搅拌强度和反应时间等因素对除磷率的影响。结果表明,最佳铝盐除磷条件:Al∶P摩尔比1.70,快速搅拌强度300 r/min,慢速搅拌强度45 r/min,反应20 min,沉淀20 min。在此条件下,可实现剩余污泥厌氧消化液中93.41%的磷回收率。
[Abstract]:The excess sludge anaerobic digestion liquid is rich in phosphorus, which is one of the important sources of phosphorus recovery.Using the principle of Box-Benhnken center combination test and response surface analysis, the effects of Al _ 2O _ P ratio, rapid stirring intensity and reaction time on phosphorus removal rate during the recovery of phosphorus from anaerobic digestible solution with aluminum salt as phosphorus remover were studied.The results showed that the optimum conditions for phosphorus removal were as follows: the mole ratio of 1: Alw: P was 1.70, the rapid stirring intensity was 300 r / min, the slow stirring intensity was 45 r / min, the reaction time was 20 min, and the precipitation time was 20 min.Under these conditions, the phosphorus recovery rate of 93.41% in the anaerobic digestible solution of excess sludge can be achieved.
【作者单位】： 河南师范大学环境学院河南省环境污染控制重点实验室黄淮水环境与污染防治省部共建教育部重点实验室;河南师范大学;
【基金】：国家水体污染控制与治理科技重大专项(2015ZX07204-002)
【分类号】：TQ126.31;X703
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本文编号：1752748