scholarly journals Application of Nanotechnology in Wastewater Treatment

2018 ◽  
Vol 1 (1) ◽  
Author(s):  
Wu Qingping
Keyword(s):  
Water Pollution ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Sewage Treatment ◽  
Halogenated Hydrocarbons ◽  
Good Effect ◽  
Chlorinated Phenols ◽  
Catalytic Method ◽  
Adsorption Method ◽  
Treatment Comparison

Because the current social water pollution is serious, and the conventional method cannot eff ectively manage alltypes of water pollution, and its single eff ect cannot be satisfactory, we must seek new and eff ective treatment. Thepaper is a comprehensive review of the best practices of the conventional wastewater treatment method with referenceto the experiments and research results of nanotechnology in sewage treatment. Comparison of nanotechnology canbe compared with conventional methods to make the particles have a special function, and some special performancejust in the sewage treatment medium to a good effect: the depth of the catalytic method can be effective in thedecomposition of many types of organic pollutants such as halogenated hydrocarbons Class, chlorinated phenols,cyanide, various organic acids and can handle metal particles; adsorption method for the water heavy metal pollutiontreatment costs less, simple and widely used, nanofi ltration membrane can replace the adsorption and electrochemicalmethods, Pulping and precipitation are one of the most eff ective methods for the treatment of colloidal wastewater. Itcan eff ectively reduce the turbidity and chroma of waste water, remove a variety of macromolecular organic matter andsome heavy metal ions ( Mercury and lead); organic / inorganic composite nanoparticles with its excellent inorganicmaterials, light, electricity, magnetic and other properties, organic materials, excellent processing performance,biocompatibility, for many diffi cult to deal with water pollution control, which has a corresponding method, can besimple and eff ective to solve the problem. The application of nanotechnology in water treatment has shown a broadprospect, but needs further research and improvement.

An Optimization Study of the Planning of Water Pollution Control for Majiagou Stream in Harbin, China

1989 ◽  
Vol 21 (8-9) ◽  
pp. 995-1002
Author(s):  
Yang Gong ◽  
Qi Peishi ◽  
Wang Baozhen ◽  
Sui Jun
Keyword(s):  
Water Pollution ◽  
Wastewater Treatment ◽  
Pollution Control ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Water Source ◽  
Lower Reach ◽  
Water Pollution Control ◽  
Optimization Study

A study on the optimization planning of water pollution control for Majiagou Stream in Harbin was carried out. Four water pollution control options were considered. The option regarded as most feasible, both technically and economically, involved the construction and operation of a wastewater treatment works with a capacity of 150,000 m3/day on the upper reach of the stream. The effluent would be discharged into the upper reach of Majiagou Stream and would be used as a water source for the stream, while an interceptor sewer was to be constructed on the lower reach of the stream to collect wastewaters in the lower reach basin and transport them to a centralized wastewater treatment plant. An optimization study of the relationship between the sewerage interceptor and the sewage treatment plant on the upper reach was conducted. In this study, a comprehensive water pollution control plan, including the sewerage system, sewage treatment plant, and the use of treated wastewater as a water source for Majiagou Stream, was considered as a systematic problem in which many factors were taken into account. Cost-benefit analysis was carried out for both the sewage treatment plant and the interceptors by means of empirical regression equations and diagrams in which various curves showed the relationships between the important factors.

Investigation of Heavy Metal Pollutants in a Sewage Treatment Plant of Changchun in Frozen Period

2011 ◽  
Vol 343-344 ◽  
pp. 1265-1268
Author(s):  
Ying Zi Lin ◽  
Chang Hu Cao ◽  
Jun Yin ◽  
Hai Jun Qi
Keyword(s):  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Metal Pollutants ◽  
Urban Sewage ◽  
Heavy Metal Pollutants

According to the heavy metal investigation of some practical data in Changchun sewage treatment plant. For wastewater treatment plant and the commonly used treatment process wastewater process of the distribution of heavy metals are analyzed. We studied the heavy metals pollutant removal efficiency of situation with A/O process of wastewater treatment plant in frozen period. And make a comparative analysis of heavy metals pilot plant and demonstration project in water, determine target pollutants and focus on removal. Thus, under low temperature conditions so as to sewage treatment plants effectively remove heavy metal pollutants to provide theoretical guidance for the control of urban sewage treatment by-product of the deposition process to improve the quality of urban sewage treatment and provide scientific basis.

scholarly journals Control System and Algorithm of Sewage Treatment Plant Based on Artificial Intelligence

2021 ◽  
Vol 2066 (1) ◽  
pp. 012025
Author(s):  
Yunzhu Liu ◽  
Jinbao Cao
Keyword(s):  
Artificial Intelligence ◽  
Water Pollution ◽  
Wastewater Treatment ◽  
Control System ◽  
Pid Control ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treated Wastewater ◽  
Self Tuning

Abstract With the improvement of people’s awareness of environmental protection in recent years, the related problems of water pollution treatment have gradually come into people’s view. As the source of life, water accounts for a huge proportion in our lives, but at the same time, water pollution is quietly spreading in places we don’t know. The continuous discharge of heavy industrial wastewater, agricultural wastewater and domestic sewage leads to increasingly serious water pollution. Sewage treatment(ST) is imperative, and its social benefits are huge, but the corresponding cost is high, and the return on investment is low. Traditional ST methods can not load large-scale ST. How to carry out ST based on artificial intelligence(AI), build ST plant control system, and make ST enter the era of automation is the problem to be solved. The purpose of this paper is to put forward the reform of control system for ST plant based on AI, apply AI into ST, and realize the automation and precision of ST plant. This paper mainly uses the fuzzy self-tuning PID control system algorithm, through the analysis of ST control object, analysis of fuzzy self-tuning PID controller design to complete the ST control system settings. In this paper, the literature review method and data analysis method are used. By collecting relevant data, the control system of ST plant is constructed to simulate ST, and the real-time data of ST is analyzed. The traditional PID control and fuzzy self-tuning PID control are compared. The experimental results show that the wastewater treatment plant system based on AI input, in the aspect of wastewater treatment, the concentration of COD and BOD in the treated wastewater are reduced by a certain proportion, the dissolved oxygen content in the wastewater reaches about 2.0mg/l, which meets the national discharge standard, and its rising time is reduced to 25 seconds, and the adjustment time is saved by 50 seconds.

scholarly journals The Impacts of Water Pollution Emissions on Public Health in 30 Provinces of China

Healthcare ◽  
2020 ◽  
Vol 8 (2) ◽  
pp. 119 ◽  
Author(s):  
Zhen Shi ◽  
Shijiong Qin ◽  
Chenjun Zhang ◽  
Yung-ho Chiu ◽  
Lina Zhang
Keyword(s):  
Water Pollution ◽  
Economic Development ◽  
Wastewater Treatment ◽  
National Health ◽  
Negative Impact ◽  
Sewage Treatment ◽  
Domestic Water ◽  
Health Crisis ◽  
Research Objects ◽  
Overall Efficiency

China’s economy in recent decades has developed at a very rapid speed, as evidenced by its GDP jumping to second place in the world. Although utilization of domestic water resources has helped spur economic development, sewage discharge as an undesirable output has unfortunately caused many negative effects on human health, causing concern from all walks of life. Therefore, governments in China at all levels are committed to urban sewage treatment policies in order to reduce the negative impact of water pollution on society. While most existing studies have targeted the macro-level modes of economic development and environmental pollution, their selection of research objects is too narrow by failing to adequately consider China's water pollution and the consequential national health crisis. This study takes cities in 30 provinces of China as the research objects and applies various influencing factors of urban wastewater treatment and health (as two stages) to the modified two-stage dynamic Slacks-Based Measures (SBM) Data Envelopment Analysis (DEA) model. The results reveal that the overall efficiency of each province is increasing and that the efficiency of the wastewater treatment stage is greater, thus contributing to overall efficiency. Conversely, the health stage’s efficiency is far lower than the wastewater treatment stage’s efficiency, which has a notably adverse effect on overall efficiency. In addition, most input-output variables need much improvement. Based on the findings herein, we offer specific suggestions to each province for improving sewage treatment capacity, the level of medical care, and the quality of national health.

scholarly journals Galvanocoagulation ecological sal method of current sewage treatment from ions of heavy metals.

2017 ◽  
Vol 1 (2) ◽  
pp. 30-35
Author(s):  
Alexey Vasilenko ◽  
Lesya Vasilenko
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Heavy Metal ◽  
Wastewater Treatment ◽  
Metal Ions ◽  
Heavy Metal Ions ◽  
Sewage Treatment ◽  
Engineering Calculation ◽  
Comparative Characteristic ◽  
General Description

It implemented a general description of the washing waste water in electroplating. The analysis of existing methods of cleaning the wash wastewater containing heavy metal ions. The comparative characteristic and disadvantages of these methods are given. The method proposed galvanocoagulation engineering calculation of industrial filter for wastewater treatment from heavy metal ions, in which the galvanocoagulation process.

Analysis and balance of phosphorous removal from wastewater at urban wastewater treatment plant

2020 ◽  
Vol 15 (2) ◽  
pp. 142-151
Author(s):  
Peter Lukac ◽  
Lubos Jurik
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plant ◽  
Wastewater Treatment Plants ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Phosphorus Recovery ◽  
Anaerobic Sludge ◽  
Biological Phosphorus Removal ◽  
The Mean

Abstract:Phosphorus is a major substance that is needed especially for agricultural production or for the industry. At the same time it is an important component of wastewater. At present, the waste management priority is recycling and this requirement is also transferred to wastewater treatment plants. Substances in wastewater can be recovered and utilized. In Europe (in Germany and Austria already legally binding), access to phosphorus-containing sewage treatment is changing. This paper dealt with the issue of phosphorus on the sewage treatment plant in Nitra. There are several industrial areas in Nitra where record major producers in phosphorus production in sewage. The new wastewater treatment plant is built as a mechanicalbiological wastewater treatment plant with simultaneous nitrification and denitrification, sludge regeneration, an anaerobic zone for biological phosphorus removal at the beginning of the process and chemical phosphorus precipitation. The sludge management is anaerobic sludge stabilization with heating and mechanical dewatering of stabilized sludge and gas management. The aim of the work was to document the phosphorus balance in all parts of the wastewater treatment plant - from the inflow of raw water to the outflow of purified water and the production of excess sludge. Balancing quantities in the wastewater treatment plant treatment processes provide information where efficient phosphorus recovery could be possible. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. The mean daily value of P tot is approximately 122.3 kg/day of these two sources. There are also two outflows - drainage of cleaned water to the recipient - the river Nitra - 9.9 kg Ptot/day and Ptot content in sewage sludge - about 120.3 kg Ptot/day - total 130.2 kg Ptot/day.

Assessment of heavy metal river Ingulets surface water pollution

2017 ◽  
Vol 0 (3) ◽  
Author(s):  
Ganna G. Trokhymenko ◽  
Nina V. Tsyhanyuk
Keyword(s):  
Water Pollution ◽  
Heavy Metal ◽  
Surface Water ◽  
Surface Water Pollution
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