【摘要】 根据西宁火电厂末端脱硫废水水质特点以及后续浓缩减量工艺对进水水质的要求,提出三级软化加药及沉淀池+管式膜两级分离的预处理工艺路线。结果表明:相比较传统的两级软化一级分离工艺,所提方法将加药成本由41元/t降低至17元/t,实现了污泥的综合利用,提高了系统的抗冲击能力,为后续的浓缩减量和固化模块提供了优质的进水水质保证。更多还原

【Abstract】 To satisfy the requirements on inlet water quality by subsequent concentration reduction module, a pretreatment process of three-stage softening and two-stage separation(sedimentation pool plus tubular membrane) was proposed for the desulfurization wastewater from Xining Thermal Power Plant according to properties of the wastewater. Results show that compared with the traditional two-stage softening and one-stage separation process, the method proposed helps to reduce the dosing cost from 41 RMB to 17 RMB for every ton of water, thus achieving comprehensive application of the sludge, improving the shock resistance of the system, and providing high quality of inlet water for the subsequent concentration reduction and solidification modules.更多还原