检索结果-南通市图书馆

Developments in Biological Treatment of industrial wastewaters

Tsinghua Science and Technology 2000年第3期5卷 246-251页

作者： G.K.Anderson Environmental Engineering University of Newcastle UK

The characteristics and biological treatment technologies of several kinds of industrial wastewater are summarised. Biological treatment of industrial wastewater is a well established system with applications going back for over a century. However, developments are still taking place but at the design stage, more emphasis will be placed on small “footprint” systems, odour control and minimization of excess sludge production. 

关键词： biological treatment odour control biomass separation industrial wastewater

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Study on the Recycling of P in Phosphogypsum Leachate

引用

Journal of Geoscience and Environment Protection 2023年第5期11卷 209-225页

作者： Shushu Zhao Huali Zhang Qin Liu Yiyang He Han Xiao Li Ma School of Chemistry and Environmental Engineering Wuhan Institute of Technology Wuhan China

After washing and curing, P is transported from the phosphogypsum to the leachate during the phosphogypsum detoxification process, providing two ideas for phosphorus recovery from phosphogypsum leachate: 1) preparation of calcium hydrogen phosphate for feed;2) preparation of calcium phosphate. A ready-to-use calcium oxide slurry was used to recover P from phosphogypsum leachate at a slurry concentration of 20% and a quantitative link between calcium to phosphorus ratio and fixation rate was fitted by mixed use batch experiments, reaction kinetics and thermodynamics, and theoretical calculations were used to demonstrate that phosphorus cannot be completely reused in the preparation of calcium hydrogen phosphate. The findings demonstrated that: a) the residual phosphorus concentration was in the range of 1300 - 1500 mg/L for the preparation of type I feed grade calcium hydrogen phosphate from phosphogypsum leachate;b) the P removal effect could reach 99.99% for the preparation of calcium phosphate from phosphogypsum using the theoretical equation: fixation rate = 87.91 - 10.96(Ca/P) + 3.22(Ca/P)2 (R2 = 0.9954);c) The procedure follows the suggested secondary kinetics, and according to the Freundlich isothermal model, the reaction process is under the control of the chemical reaction, with a reaction index of 0.7605. This study can be used as a theoretical guide for the recovery of P from phosphogypsum leachate, the preparation of products to bring about economic by-products, and the purification of wastewater for reuse.

关键词： Phosphorus Recovery industrial wastewater Precipitation Phosphogypsum Leachate

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

On-Line Measurement of the Chemical Oxygen Demand in wastewater in a Pulp and Paper Mill Using Near Infrared Spectroscopy

引用

Spectral Analysis Review 2014年第4期2卷 19-25页

作者： John Dahlbacka Josefina Nystrom Torgny Mossing Paul Geladi Tom Lillhonga Unit for Research and Development Novia University of Applied SciencesVaasaFinland Department of Forest Biomaterials and Technology Swedish University of Agricultural SciencesUmeaSweden

Although near infrared (NIR) spectroscopy has been evaluated for numerous applications, the number of actual on-line or even on-site industrial applications seems to be very limited. In the present paper, the attempts to produce online predictions of the chemical oxygen demand (COD) in wastewater from a pulp and paper mill using NIR spectroscopy are described. The task was perceived as very challenging, but with a root mean square error of prediction of 149 mg/l, roughly corresponding to 1/10 of the studied concentration interval, this attempt was deemed as successful. This result was obtained by using partial least squares model regression, interpolated reference values for calibration purposes, and by evenly distributing the calibration data in the concentration space. This work may also represent the first industrial application of online COD measurements in wastewater using NIR spectroscopy.

关键词： Chemical Oxygen Demand (COD) industrial wastewater Near Infrared Spectroscopy (NIR) Multivariate Calibration On-Line Measurement

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Development of low-and non-waste technologies in China

引用

Journal of Environmental Sciences 1990年第2期2卷 19-23页

作者： Yan HongbangNational Environmental Protection Agency,No.115,Xishimenei Naniaojie,Beijing 100035,China.

Water pollution is one of the most serious environmental problems in China. In order to reduce the discharge of waste water per RMB 1000 Yuan of the industrial output value, the author offered a proposal on the development of low-and non-waste technologies as follows: 1. Changing distribution and structures of industrial production; 2. Innovation in techniques and eliminating industrial wastewater in the process of manufacture; 3. Comprehensive utilization of wastes and wastewater; 4. Strengthening environmental management and supervision of industrial enterprises.

关键词： environmental protection water pollution industrial wastewater low-and non-waste technologies.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Removal Effect of Fluoride Ions by Aluminum Salt in wastewater

引用

Meteorological and Environmental Research 2022年第6期13卷 55-59页

作者： Na ZHANG Jia ZHANG Ping DANG Zhengxu CAO Inner Mongolia Jiuke Kangrui Environmental Protection and Technology Co. Ltd.Erdos 017000China

To study a kind of high-efficiency fluoride removal agent based on aluminum salt,through theoretical and experimental research,the influence of different factors(dosage of agent,concentration of fluoride ions,pH,TDS,hardness and alkalinity,etc.)on the removal effect of fluoride ions by fluoride removal agent in industrial wastewater,especially mine water was *** results show that the fluoride ion removal agent based on aluminum salt could achieve efficient removal of fluoride ions,and the optimal mass ratio of fluoride ion concentration and compound reagent was 1∶*** concentration of fluoride ions in the water produced after precipitation was≤1 mg/L under the optimal pH *** the pH of the solution was 6.5-7.5,the effect of fluoride removal by the agent was the *** the pH of the solution was>10.5 orwastewater,up to 87.4%.It is also verified that TDS had no obvious effect on fluoride removal,and the smaller the hardness and alkalinity,the better the effect of fluoride removal.

关键词： industrial wastewater Fluoride ion Influencing factors Theoretical study

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：