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首页> 外文期刊>Desalination and water treatment >Use of inorganic coagulants and polyelectrolytes to sonicated sewage sludge for improvement of sludge dewatering
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Use of inorganic coagulants and polyelectrolytes to sonicated sewage sludge for improvement of sludge dewatering

机译：使用无机混凝剂和聚电解质处理污水污泥，以改善污泥脱水

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摘要

The paper presents the research on the possible use of inorganic coagulants and polyelectrolytes for conditioning of sonicated and non-sonicated sewage sludges and the impact of conditioning process on the sludge rheological parameters and dewatering process. Dewatering of sludge with a high share of organic matter or sludge with a high percentage of fine fractions and colloidal suspensions causes clogging of the filter, and an increase in filtration resistance does not bring good technological and economic effects. To improve the degree of dewatering of such sonicated and non-sonicated sludges, coagulants and polyelectrolytes and their mixture in appropriate proportions and conditions could be used. The usage of both substances: PIX and polyelectrolyte helped to achieve a cleaner filtrate in comparison with when only polyelectrolyte is used. The rheological parameters of sludge, its structure as well as processes parameters, such as vacuum filtration and pressure filtration were determined during tests. The results show that during application in the conditioning of sonicated sludge, both chemical substances (inorganic coagulant and polyelectrolyte) resulted in a significant improvement of parameters used in order to determine the susceptibility to sludge dewatering.
机译：本文介绍了无机凝结剂和聚电解质在声处理和非声处理污水污泥处理中的可能用途，以及处理过程对污泥流变参数和脱水过程的影响的研究。含有大量有机物的污泥或具有高比例的细级分和胶体悬浮液的污泥脱水会导致过滤器堵塞，并且增加过滤阻力不会带来良好的技术和经济效果。为了提高这种超声处理和非超声处理的污泥的脱水程度，可以使用适当比例和条件的凝结剂和聚电解质及其混合物。与仅使用聚电解质相比，PIX和聚电解质这两种物质的使用有助于获得更清洁的滤液。在测试过程中确定了污泥的流变参数，其结构以及工艺参数，例如真空过滤和压力过滤。结果表明，在声处理污泥的处理过程中，化学物质（无机凝结剂和聚电解质）都会显着改善用于确定污泥脱水敏感性的参数。

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