CIESC Journal ›› 2019, Vol. 70 ›› Issue (3): 1083-1088.DOI: 10.11949/j.issn.0438-1157.20181016

• Energy and environmental engineering • Previous Articles     Next Articles

Optimization of extraction process of inorganic phosphorus in scale of circulating cooling system

Yuling ZHANG1,2(),Liping ZHANG2,Qian WANG2,Xudong LI2,Xiaodong LIU2,Jinghong ZHANG2   

  1. 1. Key Laboratory of Resources and Environmental Systems Optimization, Ministry of Education, Baoding 071003, Hebei, China
    2. Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, Hebei, China
  • Received:2018-09-11 Revised:2018-11-06 Online:2019-03-05 Published:2019-03-05
  • Contact: Yuling ZHANG

循环冷却系统污垢中无机磷提取方法优化

张玉玲1,2(),张利平2,王倩2,李旭东2,刘晓冬2,张敬红2   

  1. 1. 华北电力大学“区域能源系统优化”教育部重点实验室,河北 保定 071003
    2. 华北电力大学环境科学与工程系,河北 保定 071003
  • 通讯作者: 张玉玲
  • 作者简介:张玉玲(1977—),女,博士研究生,副教授,<email>zhangyuling_hit@163.com</email>
  • 基金资助:
    河北省自然科学基金项目(E2016502097)

Abstract:

Most of the phosphorus in the reclaimed water is inorganic phosphorus, which is an important factor causing scale corrosion of the circulating cooling system. To explore the migration and transformation of inorganic phosphorus in the system and its influence on the system, the quantitative determination of inorganic phosphorus is particularly important. The feasibility of SMT continuous extraction of inorganic phosphorus in the fouling of the circulating cooling system was carried out, the inorganic phosphorus SMT was optimized and improved, and a qualitative and quantitative analysis method for inorganic phosphorus was established. The results showed that the majorization of SMT extraction method was able to extract the inorganic phosphorus in the scale completely, the recovery rate was close to 100%, and weakly adsorbed phosphorus (NH4Cl-P), aluminum-bound phosphorus (Al-P), iron-bound phosphorus (Fe-P) and calcium-bound phosphorus (Ca-P) in the scale can be completely separated.

Key words: circulating cooling water system, inorganic phosphorus, scaling, corrosion, SMT extraction method

摘要:

再生水中磷绝大部分为无机磷,是引起循环冷却系统结垢腐蚀的重要因素。为了探究无机磷在系统内的迁移转化及其对系统的影响,无机磷的定量定性尤为重要。在分析了无机磷的SMT( standard measurements and testing)连续提取法在循环冷却系统污垢提取中应用的可行性的基础上,对SMT提取方法进行条件优化,建立了污垢中无机磷定性定量分析方法。结果表明,优化后的SMT连续提取法能够实现对系统内污垢中无机磷的完全提取,且回收率接近100%;污垢中弱吸附态磷(NH4Cl-P)、铝结合态磷(Al-P)、铁结合态磷(Fe-P)和钙结合态磷(Ca-P)4种形态无机磷能得到完全分离。

关键词: 循环冷却水系统, 无机磷, 结垢, 腐蚀, SMT连续提取法

CLC Number: