河北省水资源主要问题及对策

河北省地表、地下水资源短缺,地区分布不均,且水资源浪费和水污染现象严重,这些问题一直困扰着河北省经济的发展。为此,应加强领导,制定和实施水环境保护规划,科学利用水资源,以提高水的重复利用率和效率。     

Novel FGBAC reactor for controlling the leakage of microfauna in drinking water treatment

In order to reduce the microfauna leakage risk from a granular biological activated carbon （GBAC） reactor which employs granular activated carbon （GAC） as adsorption media in drinking water advanced treatment, a novel fiber and granular biological activated carbon （FGBAC） reactor which employs both GAC and activated carbon fiber （ACF） as adsorption media, was developed. The results showed that the species composition of microfauna leaking from FGBAC reactor is almost similar to that leaking from GBAC reactor, however the densities of microfauna leaking from FGBAC reactor is reduced by 26%-81% compared to those leaking from GBAC reactor. In addition, compared to GBAC reactor, FGBAC reactor can increase the removal efflciencies of chemical oxygen demand （COD） and turbidity by 7% and 10%, respectively, during the stable operation period of reactor.     

水处理工程学网络辅助优化教学研究

为进一步提高水处理工程学的教学效果,培养出适应现代社会发展的专业人才,根据水处理工程学的课程特点,针对现存的主要问题,提出了网络辅助教学模式下提高课程教学效果的具体建议和措施。     

生物转盘水处理实验设备的设计制作

生物转盘水处理实验设备是一种既可应用于教学实验又可应用于科研的实验设备,该文介绍了该实验设备的原理、设计思想、结构特点。运行试验的结果表明,该设备启动容易、操作简便,完全能够满足教学及科研的要求。     

Study on coagulation property of metal-polysilicate coagulants in low turbidity water treatment

In order to remove the low turbidity present in surface water, a novel metal-polysilicate coagulant was used to treat the raw water taken from Tanjiang River in Guangdong Province. This study on the effects of Al/Fe molar ratio on the performance of a complex compound formed by polysilicic acid, aluminium and ferric salt (PAFS) showed that PAFS with Al/Fe ratio of 10:3 seemed to have the best coagulation performance in removing turbidity and color. Experimental results showed that under the conditions of polymerization time of 15 d, sedimentation time of 12 min, and pH of 6(8, PAFS with Al/Fe molar ratio of 10:3 had the best coagulation efficiency and lowest residual Al concentration. The turbidity decreased from 23.8 NTU to 3.23 NTU and the residual Al concentration was only 0.165 mg/L in the product water. It could be speculated that colloidal impurities and particulate Al were removed by adsorption bridging and electrical neutralization of long chain inorganic polymer coagulants.     

Study on coagulation property of metal-polysilicate coagulants in low turbidity water treatment

INTRODUCTION Coagulation-flocculation is a major step inthe potable water treatment for removal of colloi-dal impurity. Due to the increase of water pollu-tion, the standards of drinking water supply andwastewater discharge are becoming more and morestringent, and chemical coagulants that are moreefficient in water treatment are more and moreurgently in demand. As well known, the residual Al in potablewater comes from three main sources: natural wa-ter-body, coagulants used in…     

网格反应、斜板沉淀水处理实验设备的设计制作

网格反应、斜板沉淀水处理实验设备是一种既可应用于教学实验又可应用于科研的实验设备。该文介绍了该实验设备的原理、设计思想、结构特点。启动和运行试验的结果表明该设备具有启动容易、操作简便，完全能够满足教学及科研的要求。     

穆棱河水系鸡西段水体污染分析及其治理措施

依据实际监测结果,对穆棱河水系鸡西段水体污染进行了理论分析,提出水体污染的规划控制途径,为城市建设和环境保护提供依据.