scholarly journals Technological solution for wastewater treatment of the machinery plant

2021 ◽  
Vol 864 (1) ◽  
pp. 012036
Author(s):  
E Gogina
2018 ◽  
Vol 68 (12) ◽  
pp. 2752-2755
Author(s):  
Carmen Tociu ◽  
Tania Zaharia ◽  
Elena Diacu ◽  
Cristina Maria ◽  
Florica Marinescu ◽  
...  

This paper depicts the research conducted at a micro-pilot scale on autochthonous cultures in order to develop adequate technological solutions for the treatment of wastewater resulting from shrimp cultures (Palaemonidae) that would ensure the protection of the Black Sea ecosystem and constitute an applicable tool for the development of aquaculture in Romania. The proposed objectives were attained by adopting an integrated system of marine cultures shrimps-mussels-macrophyte algae, followed by a conventional chemical treatment step using aluminium sulphate recovered from metallurgical slags. This system together with wastewater treatment ensures an optimum development of species and a minimum load of pollutants in the aquatic environment.


2019 ◽  
Vol 70 (1) ◽  
pp. 275-277
Author(s):  
Costel Bumbac ◽  
Elena Manea ◽  
Alina Banciu ◽  
Catalina Stoica ◽  
Ioana Ionescu ◽  
...  

The growth of population has been linked with the increase usage of chemical compounds design for domestic and industrial use. At its turn, the increased amount of the chemical compound puts an enhanced stress on the environment. In such scenario, the waste management, including the wastewater treatment strategies have become an important part for the environmental protection. Unfortunately, the wastewater treatment procedures have several components which could be improved. Among them aeration process and biomass sedimentation have been the most stringent to tackle, since the aeration alone consume more than 60% from wastewater treatment energy cost. In this study, we proposed a new microalgae-bacteria activated sludge granule which could be an economical and technological solution to the above mentioned issues such as aeration and sedimentation. Moreover, during this study we characterized the physical, morphological and chemical characteristic of the newly formed granules by advances techniques such as electronic and correlative microscopy.


Author(s):  
O. R. Ilyasov ◽  
N. B. Chetkova ◽  
S. N. Koshelev ◽  
M. N. Kostomakhin

One of the main categories of wastewater at the enterprises of the agro-industrial complex is oil-containing effl uents, which are persistent emulsions of the “oil in water” type, the main component of which is spent lubricating and cooling technical means and compositions of spent detergents. The purpose of the research was to modernize the technology of treatment of emulsion wastewater in agro-industrial complexes. The problem of protection of water reservoirs from pollution by oil-containing wastewater from the territory of enterprises of the agro-industrial complex has been considered. The technology of wastewater treatment using multicomponent sorbents has been developed. The scheme of the general technological solution of the basic hardware design, based on the possible processing methods, is as follows: the spent oil-emulsifying effl uents accumulate in the averaging tank, they sent to the reagent decomposition unit; a suspension of the working concentration is prepared from the dry commercial reagent and is fed by metering pumps to the reagent decomposition unit; preparing a solution of a fl occulating agent working concentration of dry commercial reagent and pumped-dispensers in the node decomposition reagent; in the unit of the reagent decomposition the interaction with sorption-fl occulation agents, and decomposition of the emulsion into clarifi ed water and sludge; from the unit of chemical decomposition maslomolochny wastewater generated sludge and the clarifi ed water is fed into the sump where they are sedimentation separation. Thus, the use of multicomponent sorbents in the technology of treatment of emulsion wastewater can solve a serious problem of the negative impact of ecotoxicants of wastewater on the environment.


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