scholarly journals Aspects Regarding Instantaneous Corrosion of Nodular Iron in Household Wastewater

2018 ◽  
Vol 374 ◽  
pp. 012016
Author(s):  
M C Perju ◽  
C Savin ◽  
C Nejneru ◽  
M Axinte ◽  
D C Achiţei ◽  
...  
Keyword(s):  
Nodular Iron ◽  
Household Wastewater

scholarly journals The role of nitrogen gas in fluidized bed reactors on the nodular iron nitridation processs

2021 ◽  
Vol 1034 (1) ◽  
pp. 012172
Author(s):  
Wayan Sujana ◽  
Komang Astana Widi ◽  
Gerald A. Pohan ◽  
Tutut Nani Prihatmi ◽  
Luh Dina Ekasari
Keyword(s):  
Fluidized Bed ◽  
Fluidized Bed Reactors ◽  
Nitrogen Gas ◽  
Nodular Iron

Excimer Laser Processing of Nodular Iron

1994 ◽  
Vol 9 (3) ◽  
pp. 415-427 ◽  
Author(s):  
A. Fontes ◽  
M. Jeandin ◽  
Olivier Uteza ◽  
Marc Sentis ◽  
Michel Frainais
Keyword(s):  
Excimer Laser ◽  
Laser Processing ◽  
Nodular Iron

scholarly journals ENVIRONMENTAL PROTECTION AGAINST POLLUTION BY DOMESTIC DRAIN IN UZBEKISTAN

2019 ◽  
pp. 668-672
Author(s):  
D.E.Mahmudova ◽  
B.O.Mashrapov
Keyword(s):  
Environmental Protection ◽  
Current State ◽  
Household Wastewater ◽  
Sewage Systems

The article is devoted to the study of the current state of functioning of sewage systems in Uzbekistan and the development of recommendations for the protection of the environment from pollution by household wastewater.

scholarly journals Biodegradation of COD in Household Wastewater with Aerobic Biofilm Technology by Adding Sediment Drainage Sewerage

2018 ◽  
Vol 31 ◽  
pp. 03015 ◽  
Author(s):  
Sri Sumiyati ◽  
P. Purwanto ◽  
Endro Sutrisno ◽  
S. Sudarno ◽  
Jalu Arthawidya ◽  
...  
Keyword(s):  
Water Body ◽  
Quality Standard ◽  
Household Wastewater ◽  
The Media ◽  
Pvc Pipe ◽  
Receiving Water

Household wastewater contains contaminants that harm the environment. One of the pollutants found COD. If being discharged into the environment directly, COD concentrations exceeding the existing quality standard will disrupt the ecosystem in the receiving water body. One of the technologies that can degrade COD is biofilm technology with honeycomb tube media. This research aims to analyze the decrease of COD concentration present in wastewater household with biofilm technology of honeycomb media. The reactor used in was made of glass with a thickness of 4 mm, a volume of 18 litres and operated continuously. The media used is made of a PVC pipe, cut to 3 cm in size and then glued to one another, forming a honey comb. The results showed that there has been a decrease in COD concentration of household wastewater.

Interfacial chemistry in magnesium modified nodular iron

1974 ◽  
Vol 8 (11) ◽  
pp. 1309-1315 ◽  
Author(s):  
W.C Johnson ◽  
B.V Kovacs ◽  
J.A Clum
Keyword(s):  
Interfacial Chemistry ◽  
Nodular Iron

Study of Blowholes Formation and its Prevention in Nodular Iron Castings

2013 ◽  
Vol 584 ◽  
pp. 67-72
Author(s):  
Shao Dong Sun ◽  
Shi Jian He ◽  
Meng Qun Zhang ◽  
Xiang Ma
Keyword(s):  
Liquid Metal ◽  
Oxide Films ◽  
Carbon Equivalent ◽  
Iron Casting ◽  
Gradient Distribution ◽  
Nodular Iron ◽  
Iron Castings ◽  
Metal Form ◽  
Average Distribution ◽  
Production Practices

The content of magnesium in various parts of a nodular iron casting is measured by using spectrum analyzer. The results show that the skin of castings has an enrichment of magnesium, and the inner has a gradient distribution of magnesium, not an average distribution. Discussions on the results indicate that bubbles in the liquid metal would not move upward under the action of buoyancy, but migrate toward all directions and the bubble stranded below the surface of the liquid metal form blowholes, because these bubbles can not migrate with the obstruction of oxide films and dendrites. The results of production practices show that increasing carbon equivalent in the liquid metal is helpful to avoid blowhole defects.

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