• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Separation and Purification Technology >Fertilizer drawn forward osmosis process for sustainable water reuse to grow hydroponic lettuce using commercial nutrient solution
【24h】

Fertilizer drawn forward osmosis process for sustainable water reuse to grow hydroponic lettuce using commercial nutrient solution

机译：肥料吸引前渗透过程，用于使用商业营养溶液生长水培莴苣

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study investigated the sustainable reuse of wastewater using fertilizer drawn forward osmosis (FDFO) process through osmotic dilution of commercial nutrient solution for hydroponics, a widely used technique for growing plants without soil. Results from the bench-scale experiments showed that the commercial hydroponic nutrient solution (i.e. solution containing water and essential nutrients) exhibited similar performance (i.e., water flux and reverse salt flux) to other inorganic draw solutions when treating synthetic wastewater. The use of hydroponic solution is highly advantageous since it provides all the required macro- (i.e., N, P and K) and micronutrients (i.e., Ca, Mg, S, Mn, B, Zn and Mo) in a single balanced solution and can therefore be used directly after dilution without the need to add any elements. After long-term operation (i.e. up to 75% water recovery), different physical cleaning methods were tested and results showed that hydraulic flushing can effectively restore up to 75% of the initial water flux while osmotic backwashing was able to restore the initial water flux by more than 95%; illustrating the low-fouling potential of the FDFO process. Pilot-scale studies demonstrated that the FDFO process is able to produce the required nutrient concentration and final water quality (i.e., pH and conductivity) suitable for hydroponic applications. Coupling FDFO with pressure assisted osmosis (PAO) in the later stages could help in saving operational costs (i.e., energy and membrane replacement costs). Finally, the test application of nutrient solution produced by the pilot FDFO process to hydroponic lettuce showed similar growth pattern as the control without any signs of nutrient deficiency. (C) 2017 Elsevier B.V. All rights reserved.
机译：本研究通过渗透稀释水培液的渗透稀释，研究了使用肥料的渗透稀释液（FDFO）工艺进行了肥料的可持续重用废水的可持续重用。基准级实验的结果表明，在处理合成废水时，商业水培营养液（即含水和必需营养物的溶液溶液和必需营养物）表现出与其他无机抽取溶液相似的性能（即水通量和逆盐通量）。水培溶液的使用是非常有利的，因为它在单个平衡溶液中提供了所有所需的宏观（即，N，P和K）和微量营养素（即，Ca，Mg，S，Mn，B，Zn和Mo）因此可以直接在稀释后直接使用，而无需添加任何元素。经过长期操作（即高达75％的水恢复），测试了不同的物理清洁方法，结果表明，液压冲洗​​可以有效地恢复最高75％的初始水通量，而渗透反擦洗能够恢复初始水通量超过95％;说明FDFO过程的低结垢潜力。试点规模研究表明，FDFO工艺能够生产适用于水培应用的所需的营养浓度和最终水质（即pH和电导率）。耦合FDFO在后期阶段的压力辅助渗透（PAO）可以帮助节省运营成本（即能量和膜更换成本）。最后，试验FDFO过程产生的营养溶液对水培生菜的试验施用表现出类似的生长模式作为对照的控制而没有任何营养缺乏症的迹象。 （c）2017 Elsevier B.v.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号