藻类爆发影响因子及防控措施分析

地表水体中藻类水华频发,会严重影响自然水生生物多样性,导致人们生产生活用水的水质大幅下降。为了完善对现有藻类治理体系的认知,文章分别从水体水质、气象条件和水文地质方面总结了藻类爆发的影响因子,详细分析了水体中营养盐含量、温度、降水、光照和风速风向对藻类生长的影响。此外文章还总结了现有的藻类预警防控及常见防控措施,重点分析了物理法、化学法和生物法除藻的技术和应用效果,以期为藻类水华防治提供参考,促进科学、有效的水质治理体系形成,保证水生态环境的可持续发展。     

探究环境监测中如何提高水污染环境监测质量

为解决水污染环境监测工作存在的各种质量问题,通过使用文献资料法和定性研究法,就环境监测工作中如何提高水污染环境监测工作质量进行研究。文章对环境监测以及水污染环境监测的具体内容进行分析,在探讨水污染环境监测意义和内容的前提下,针对环境监测中水污染环境监测工作存在的监测意识有待发展,水污染监测管理体系发展不完善以及监测结果缺乏精准性等问题,提出了水污染环境监测管理意识强化,水污染环境监测工作体系完善以及水污染环境监测数据全过程管理的对策,为相关人员工作实践提供参考。     

地表水污染因素及治理措施分析

地表水污染给人类健康、生态环境和经济发展带来了很大的风险和挑战。对地表水污染的治理不仅要采用物理、化学、生物等方法,还要加强法律法规建设,制定严格的污染物排放标准和监管政策,加强对违法企业的打击力度等,做好地表水污染的监测和管理。此外,科研和技术创新也是解决地表水污染问题的关键,需要同时重视与加强。     

基于水环境与企业布局的产业调整案例研究

研究环境与产业空间布局的相关关系,有助于合理规划布局,缓解污染随产业聚集的状况.选取南京市为案例研究区域,基于水污染状况评价结果、产业聚集现状开展耦合分析,为产业布局调整提供有力支撑.结果显示,南京市水环境污染评价结果与化工、纺织业、金属冶炼制造业等8个行业在p<0.01的水平上显著相关,高污染-高聚集(H-H)区域集...     

生态环境保护中水污染治理的有效路径

水资源是经济社会发展、人类赖以生存发展的重要资源之一,当下,我国经济社会不断发展,人们生活水平不断提升,对水资源需求量也不断加大。生态环境保护是贯彻落实以习近平同志为领导的党中央所提出的绿色可持续发展理念主要途径之一,在生态环境保护中加强水污染治理工作对提升水资源利用效率,保障人们饮水质量及生命健康安全等方面具有重要意义。基于此,本文将主要研究生态环境保护中水污染治理的重要意义,分析水污染的主要危害,并探析生态环境保护中水污染治理的有效路径。     

环境监测在提高水污染治理效果中的作用探究

水污染治理是环境保护工作中比较重要的任务,工作人员应该基于各类水污染问题进行针对性治理和修复,促使其恢复理想状态。在水污染治理工作开展中,环境监测是比较重要的辅助手段,本文重点围绕水污染治理中环境监测的应用,指出了环境监测工作的重要作用,探讨了如何在水污染治理中应用环境监测。     

Effect of humic substances on the precipitation of calcium phosphate

For phosphorus （P） recovery from wastewater, the effect of humic substances （HS） on the precipitation of calcium phosphate was studied. Batch experiments of calcium phosphate precipitation were undertaken with synthetic water that contained 20 mg/L phosphate （as P） and 20 mg/L HS （as dissolved organic carbon, DOC） at a constant pH value in the range of 8.0-10.0. The concentration variations of phosphate, calcium （Ca） and HS were measured in the precipitation process; the crystalline state and compositions of the precipitates were analysed by powder X-ray diffraction （XRD） and chemical methods, respectively. It showed that at solution pH 8.0, the precipitation rate and removal efficiency of phosphate were greatly reduced by HS, but at solution pH ≥9.0, the effect of HS was very small. The Ca consumption for the precipitation of phosphate increased when HS was added; HS was also removed from solution with the precipitation of calcium phosphate. At solution pH 8.0 and HS concentrations ≤3.5 mg/L, and at pH ≥ 9.0 and HS concentrations ≤ 10 mg/L, the final precipitates were proved to be hydroxyapatite （HAP） by XRD. The increases of solution pH value and initial Ca/P ratio helped reduce the influence of HS on the precipitation of phosphate.     

Degradation of 2,4-dichlorophenoxyacetic acid in water by ozone-hydrogen peroxide process

IntroductionAt present, several types of organic pollutantsreferred to as environmental endocrine disruptors(ED) have been suggested to be associated withabnormal sexual development (Hu, 2000). It wasreported that the ED led to the decline of reproductive…     

A novel, simple and sensitive resonance scattering spectral method for the determination of chlorite in water by means of rhodamine B

A new resonance scattering method was proposed for the determination of chlorite, basing on the resonance scattering effect of rhodamine dye. In HCl-sodium acetate buffer solution, chlorite oxidizes 1- into 12 and the reaction of 12 and excess 1- results in If. It is respectively combined with rhodaminc dyes, including rhodamine B （RhB）, butyl rhodamine B （b-RhB）, rhodamine G （RhG） and rhodamine S （RhS）, to form association complex particles, which exhibit stronger resonance scattering （RS） effect at 400 nm. The chlorite concentration of ClO2 in the range of 0.00726-0.218 μg/ml, 0.0102-0.292 μg/ml, 0.00726-0.145 μg/ml and 0.0290- 0.174 μg/ml is respectively linear to the RS intensity of association complex particle systems at 400 nm for the RhB, b-RhB, RhG and RhS. The detection limits of the four systems were respectively 0.00436, 0.00652, 0.00580 and 0.01450μg/ml ClO2^-. In the four systems, the RhB system possesses good stability and high sensitivity. It has been applied to the analysis of chlorite in wastewater with satisfactory results.