The Application of Ecological Treatment Technology of Bolt and Lattice Beam in Highway Mountain Slope Support

2018 ◽  
Vol 37 (3) ◽  
pp. 1891-1896
Author(s):  
Xunguo Zhu ◽  
Zhuoli Chen ◽  
Yan Ren
Keyword(s):  
Mountain Slope ◽  
Treatment Technology ◽  
Ecological Treatment ◽  
Lattice Beam

scholarly journals Enhanced Nitrogen Removal of Steel Rolling Wastewater by Constructed Wetland Combined with Sulfur Autotrophic Denitrification

2021 ◽  
Vol 13 (3) ◽  
pp. 1559
Author(s):  
Tao Zheng ◽  
Xiaohu Lin ◽  
Jingcheng Xu ◽  
Jie Ren ◽  
Danyan Sun ◽  
...  
Keyword(s):  
Removal Efficiency ◽  
Autotrophic Denitrification ◽  
Low Carbon ◽  
Treatment Technology ◽  
Steel Rolling ◽  
Iron And Steel ◽  
Structure Observation ◽  
Ecological Treatment ◽  
Sand And Gravel ◽  
Observation Results

Constructed wetlands (CWs), an ecological treatment technology, is suitable for advanced treatment, but has an unsatisfying denitrification performance for steel rolling wastewater with low C/N ratio. This study combined sulfur autotrophic denitrification (SAD) with conventional constructed horizontal subsurface flow wetlands to treat steel rolling wastewater, exploring the feasibility of applying SAD to enhance the denitrification performance of CWs. The reactor consists of two sections, one filled with manganese sand and gravel (HFC) and another filled with ceramic, sulfur, and lime (HFSAD). Results showed that HFC had a good performance on removing turbidity, DO, COD, and TP, while the average removal efficiency of total nitrogen (TN) in HFC was just 25.6%. On this basis, HFSAD could remove 45.6% of TN subsequently, whose denitrification rate was 4–6 times as high as that of HFC. Increasing hydraulic retention time could improve removal efficiency of contaminants in HFC and HFSAD in different degrees. The analysis of microbial community structure, observation results of fillers and monitored sulfate all provided proofs for the occurrence of SAD. CWs combined with SAD can be applied in the treatment of steel rolling wastewater with low carbon, which can provide reference for ecological wastewater treatment, water saving, and recycling in iron and steel enterprises.

scholarly journals Life Cycle Assessment of Artificial Wetland Systems for Rural Wastewater Treatment

2021 ◽  
Vol 299 ◽  
pp. 02006
Author(s):  
Siyi Wang ◽  
Zixiang Ji ◽  
Yumin Wang
Keyword(s):  
Wastewater Treatment ◽  
Life Cycle Assessment ◽  
Life Cycle ◽  
Environmental Impact ◽  
Evaluation Method ◽  
Aeration Tank ◽  
Treatment Model ◽  
Treatment Technology ◽  
Artificial Wetland ◽  
Ecological Treatment

Decentralized wastewater treatment technology, especially natural ecological treatment technology has widely been used in rural regions. In this paper, a comprehensive life cycle assessment (LCA) of a typical wastewater ecological treatment technology - artificial wetland technology was conducted. SimaPro software was applied to simulate the wastewater treatment facility, and the CML2 baseline2000 impact evaluation method was selected to analyze the environmental loads and benefits during the life cycle. The environmental impact of the facility adopting grey-black separation mode is compared with that of the unified collection and treatment model to provide scientific basis and suggestions for the selection of wastewater collection and treatment model. The results indicated that the main environmental impact of the Southeast University artificial wetland system comes from the construction and operation of the artificial wetland and aeration tank. Marine water ecotoxicity is the main impact factor, followed by freshwater water ecotoxicity.

scholarly journals Carbon emission assessment of wastewater treatment plant based on accounting perspective

2020 ◽  
Vol 194 ◽  
pp. 04049
Author(s):  
Lin Lin
Keyword(s):  
Sewage Treatment ◽  
Ghg Emissions ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Treatment Technology ◽  
Sewage Treatment Plants ◽  
Ecological Treatment ◽  
Operation Control ◽  
Reduce Emissions

Excessive GHG emissions from human activities lead to climate warming, and sewage treatment plants are one of the sources of GHG emissions. The number of sewage treatment plants in my country is increasing year by year, and they emit a large amount of GHG, it is necessary to evaluate their emissions and seek ways to reduce emissions. According to the “Greenhouse Gas Inventory Protocol-Corporate Accounting and Reporting Standards”, taking a sewage treatment plant in a northern city as an example, the GHG emission classification of its operation control range, selection of evaluation methods and emission factors, assessment of GHG emissions, analysis of GHG emissions Constitution, propose ecological treatment technology, recycling CH4 and other emission reduction measures.

A Type of Rainwater Ecological Treatment Technology: Rainwater Biofiltration System

2013 ◽  
Vol 295-298 ◽  
pp. 1502-1507
Author(s):  
Xiang Ling Zhang ◽  
Jun Jie Chen ◽  
Liang Hu
Keyword(s):  
Heavy Metal ◽  
Heavy Metal Ions ◽  
Structure Design ◽  
System Configuration ◽  
Plant Selection ◽  
Major Research ◽  
Treatment Technology ◽  
Technical Improvement ◽  
Ecological Treatment ◽  
Suspended Matters

This paper introduced a kind of rainwater biofiltration processing technology being researched and applied in Australia. It summarized FAWB researchers’ major research and progress on the system configuration, packaging selection, plant selection and purification effect of this technology. And the advantages were presented in removing the suspended matters, heavy metal ions and nutritional pollutants in rainwater biofiltration system, as well as in regarding to the characteristics of effectively stored the rainwater for recycling in system configuration. The paper also put forward suggestions to the technical improvement for our country’s rainwater treatment system and structure design for reference.

MASALAH DAN ALTERNATIF TEKNOLOGI PENGOLAHAN AIR UNTUK MASYARAKAT MISKIN KOTA

2018 ◽  
Vol 6 (3) ◽  
Author(s):  
Arie Herlambang
Keyword(s):  
Water Treatment ◽  
Ground Water ◽  
Potable Water ◽  
Diarrheal Disease ◽  
Low Cost ◽  
Clean Water ◽  
Treatment Technology ◽  
Alternative Technologies ◽  
The Poor ◽  
Daily Water

Clean water to poor communities who live in crowded municipal area is stillexpensive and a luxury. This condition is evidenced by the number of people whouse ground water for their daily water, because water taps still seems expensivefor them. Diarrheal disease is still relatively high for Indonesia, where nearly 16thousand people suffer from diarrhea due to poor sanitation. To help the poor inthe city, there are several alternative technologies that can be applied to publicaccess to clean water and adequate low-cost, including ground water treatmenttechnology with a filter system equipped with an ultraviolet sterilizer, or ozonegenerators, or using ultrafiltration, if possible can also use the reverse osmosismembrane that for fresh water. Arsinum is the best alternative should be chosenfor fulfilled potable water in slump area.Keywords : Sanitation, water treatment technology, portable water, low-cost, slump area

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