Research Progress of Natural Polymers in Wastewater Treatment

2019 ◽  
Vol 16 (4) ◽  
pp. 335-344 ◽  
Author(s):  
Xiang Li ◽  
Baojun Yang ◽  
Li Feng ◽  
Huaili Zheng ◽  
Guoming Zeng ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Environmental Protection ◽  
Environmental Awareness ◽  
Environmental Engineering ◽  
Research Progress ◽  
Future Trends ◽  
Natural Polymers

With the development of industry, urbanization, increasingly stringent environmental protection requirements, and strengthening of people’s environmental awareness, green treatment of pollutants has become a research hotspot in the field of environmental protection. Accordingly, the study on natural non-toxic polymers has received increasing attention from researchers. This paper aims to provide the present research progress of natural polymers in environmental engineering, including the striking characteristics and modification methods of the most well-known natural polymers, as well as their applications in environmental protection field. Concluding remarks and future trends are also pointed out.

scholarly journals Research Progress and Prospects of Marine Oily Wastewater Treatment: A Review

Water ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2517 ◽  
Author(s):  
Meiling Han ◽  
Jin Zhang ◽  
Wen Chu ◽  
Jiahao Chen ◽  
Gongfu Zhou
Keyword(s):  
Wastewater Treatment ◽  
Environmental Protection ◽  
High Efficiency ◽  
Combined Treatment ◽  
Research Progress ◽  
Oily Wastewater ◽  
Treatment Technology ◽  
Physical Treatment ◽  
Processing Technologies ◽  
Oily Wastewater Treatment

Oily wastewater from shipping waste and marine accidents have seriously polluted the marine environment and brought great harm to human production and health. With the increasing awareness of environmental protection, the treatment of marine oily wastewater has attracted extensive attention from the international community. Marine oily wastewater has various forms and complex components, so its treatment technology faces great challenges. Sources, types, supervision, and treatment of marine oily wastewater are introduced in this paper. The research progress of marine and ship’s oily wastewater treatment technologies in recent years are reviewed from the perspectives of physical treatment, chemical treatment, biological treatment, and combined treatment, respectively. Principles and characteristics of all kinds of technologies were analyzed. In addition, this paper shows that multiple processing technologies used in combination for the purpose of high efficiency, environmental protection, economy, and energy conservation are the future development trend.

Wastewater Treatment and Disposal in the City of Dubrovnik

1989 ◽  
Vol 21 (1) ◽  
pp. 55-66
Author(s):  
J. Margeta ◽  
J. Pupovac ◽  
B. Ivančić
Keyword(s):  
Wastewater Treatment ◽  
Environmental Protection ◽  
Rapid Development ◽  
Specific Method ◽  
Wastewater Disposal ◽  
Sewerage System ◽  
Seaside Resort ◽  
Coastal Sea ◽  
Treatment And Disposal ◽  
The City

Dubrovnik is the most popular tourist seaside resort in Yugoslavia. The rapid development of tourism has necessitated appropriate environmental protection, particularly with regard to the coastal sea. Consequently, the city has constructed a plant for the treatment of wastewater and a submarine outfall. The characteristics of the sewerage system and the coastal sea meant that the wastewater disposal system required a specific method of construction and treatment. This paper presents the system adopted for Dubrovnik and the methodology used to choose the system. Special attention is paid to the problems and drawbacks which occurred during design and operation of the system, as well as to the measures undertaken afterwards for reconstruction of the system.

Research Progress of Magnetic Polymer Microspheres in Environmental Engineering

2016 ◽  
Vol 13 (2) ◽  
pp. 118-125
Author(s):  
Xiang Li ◽  
Huaili Zheng ◽  
Zhengan Zhang ◽  
Chuanliang Zhao ◽  
Yuhao Zhou ◽  
...  
Keyword(s):  
Environmental Engineering ◽  
Research Progress ◽  
Polymer Microspheres

scholarly journals KONSEP HIJAU: PENERAPAN GREEN CONSTITUTION DAN GREEN LEGISLATION DALAM RANGKA ECO-DEMOCRACY

2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Eko Nurmardiansyah
Keyword(s):  
Environmental Protection ◽  
State Policy ◽  
Policy Making ◽  
Environmental Awareness ◽  
Natural World ◽  
Human Relationship ◽  
Green Is ◽  
Global Discourse

<p><strong><em>Abstract </em></strong></p><p><em>Green principle is</em><em> to be understood</em><em> </em><em>as </em><em>a commitment to the environment</em><em>. It is p</em><em>art of a broader ideology that p</em><em>laces</em><em> human relationship with the natural world </em><em>at the center.</em> <em>Green is a process, not a status, a verb, not an adjective. </em><em> Good environmental awareness become an important and urget global discourse.</em><em> Eco</em><em>-</em><em>crasy should be</em><em>come</em><em> the guiding</em><em> principle informing Indonesian’</em><em> state policy making (political law) in environmental protection and management.</em><em>  However, the concept of Eco-crasy should be further spelled out into a </em><em>green constitution, green legislation</em><em>s</em><em> and green budgeting.</em></p>

scholarly journals Use of Sewage Sludge in Agriculture

2011 ◽  
Vol 68 (2) ◽  
Author(s):  
Daniela CIUPEANU CĂLUGĂRU
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Wastewater Treatment ◽  
Sewage Sludge ◽  
Environmental Protection ◽  
Environmental Quality ◽  
Wastewater Treatment Plants ◽  
Biological Sludge ◽  
The Law ◽  
High Degree

For turning to a high degree of favorability of sludge from wastewater treatment plants, currently the reintroduction in the natural circuit of this waste is an urgent priority. Knowing precisely the composition of chemical and biological sludge from waste water in accordance with the law and the rules of their application, along with modern wastewater treatment appropriate technologies play a key role on environmental protection. Involvement by precise rules, the content of heavy metals in relation to the maximum permitted by law, translate in to particularly advantageous results in terms of environmental quality.

Comparative Study on Micronsized and Nanosized Carica papaya Seed Modified Pullulan as Biocoagulant in Wastewater Treatment

2021 ◽  
Vol 317 ◽  
pp. 276-282
Author(s):  
Deong Jing Lie ◽  
Mazatusziha Ahmad ◽  
Nur Sabrina Azhar
Keyword(s):  
Particle Size ◽  
Wastewater Treatment ◽  
Carica Papaya ◽  
Municipal Wastewater ◽  
Particle Interaction ◽  
Test Method ◽  
Treated Wastewater ◽  
Limited Information ◽  
Natural Polymers ◽  
Jar Test

Plant-based coagulants have been used as an alternative material to replace chemical coagulant in wastewater treatment. So far, limited information was found on the incorporation of plant-based biocoagulant to natural polymers and the effect of particle size upon wastewater treatment application. Thus, this study was conducted to explore the effectiveness of micronsized and nanosized Carica Papaya (CP) seed modified pullulan as biocoagulant. Biocoagulant were prepared at different composition of CP to pullulan, with the CP content range from 1% to 9%. The biocoagulant were characterized via Particle Size Analyzer (PSA), Fourier Transform Infrared Spectroscopy (FTIR) and morphological analysis via Field Emission Scanning Electron Microscopy (FESEM). It was used to treat municipal wastewater. The treated wastewater quality was analyzed by jar test method with dosage of biocoagulant used was 0.6g/L. Result showed that the 10% (D10), 50% (D50) and 90% (D90) distribution of micronsized CP had particle size of 0.3675 µm, 0.8433 µm and 1.9537 µm respectively. The nanosized CP was 0.4473nm (D10), 2.3758nm (D50) and 2.9938nm (D90). Characterization of biocoagulant via FTIR revealed the appearance of O-H, C=O, C-H and C-O-C bond which contribute to particle interaction for turbidity reduction of wastewater. Jar test analysis found that at 3% micronsized CP and 7% nanosized CP were able to reduce turbidity up to 59.65% and 65.27% respectively. Both size of biocoagulant slightly changed the pH of treated wastewater to neutral, increased in dissolved oxygen (DO) and reduced in total suspended solid (TSS). Overall, nanosized CP was found more effective as compared to micronsized CP.

Sign in / Sign up

Export Citation Format

Share Document