摘要
针对地热水絮状物造成结垢和腐蚀,如何抑制絮状物成为亟待解决的问题。基于地质分析结果,采用理论研究、室内实验和现场试验的方法,围绕絮状物及水质变化展开研究,分析絮状物的成分及成因,并揭示悬浮物和垢物的形成机理。在理论研究方面,重点探讨了温度、压力、pH值、氧化还原电位等因素对矿物质溶解沉淀的影响,并结合现场的运行环境,分析矿物沉淀成因和成分。室内实验则主要对现场水样和垢样分别取样进行分析,一是通过直接的垢样成分检验,确定垢样成分,二是对比加药前后水样中主要矿物质离子的变化,通过离子浓度的变化确定沉淀的主要成分,从而进行阻垢剂的选型,从而完成室内实验的评价优化工作。随后,在此基础上进行现场实验,以消除铁离子的影响为主,在地热水中加入铁离子稳定剂,同时兼顾铝硅酸盐类不溶物的分散和其他能发生化学性沉淀物的阻垢,提高回灌水的过滤精度,并评价应用效果。研究结果可为地热水开发后抑制絮状物的产生提供理论依据和技术指导,促进地热能资源的推广利用。
In response to the scaling and corrosion caused by flocculent substances in geothermal water,how to suppress the flocculent substances has become an urgent problem to be solved.On the basis of results of geological analysis,the methods of theoretical research,laboratory experiments and field experiments were used to study the composition and causes of flocculent substances and water quality changes,and to reveal the formation mechanisms of suspended and scaling matters.In terms of theoretical research,the influence of factors such as temperature,pressure,pH value,and oxidation-reduction potential on mineral dissolution and precipitation was mainly explored.Combined with the operating environment on-site,the genesis and composition of mineral precipitation were analyzed.The laboratory experiments are mainly to sample and analyze the on-site water sample and scale sample respectively,one is to determine the scale sample composition through direct scale sample component inspection,the other is to compare the changes of the main mineral ions of the water sample before and after dosing,and determine the main components of the precipitate through the changes in ion concentration,and select scale inhibitors to complete the evaluation and optimization of indoor experiments.Subsequently,on-site experiments were conducted on this basis,mainly to eliminate the influence of iron ions.Iron ion stabilizers were added to the geothermal water,while also considering the dispersion of insoluble aluminosilicates and other scale inhibitors that can cause chemical precipitates.Improve the filtration accuracy of reclaimed water and evaluate its application effectiveness.The research results provide theoretical basis and technical guidance for inhibiting the production of flocculent substances after geothermal water development,and promote the promotion and utilization of geothermal energy resources.
作者
刘健
高小荣
孙彩霞
卢星辰
马秀婷
路学明
张文科
Liu Jian;Gao Xiaorong;Sun Caixia;Lu Xingchen;Ma Xiuting;Lu Xueming;Zhang Wenke(Sinopec Green Energy Geothermal Development Co.,Ltd.,Xiong'an New Area 071800,China;Department of Thermal Engineering,Shandong Jianzhu University,Jinan 250101,China;Sinopec Green Energy Geothermal Energy(Shandong)Development Co.,Ltd.,Jinan 250000,China)
出处
《能源与环保》
2026年第1期136-142,共7页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
基金
山东省自然科学基金面上项目(ZR2022ME079)。
关键词
水性
絮状物
饱和指数
阻垢剂
地热水
地热能
water property
flocculent material
saturation index
scale inhibitor
geothermal water
geothermal energy
