Experience in Implementation of Systems Applied for Drainage Water Ion-Selective Purification from Radionuclides at Units 1,2 of Novovoronezh-2 NPP

ANRI ◽  
2020 ◽  
Vol 0 (4) ◽  
pp. 64-70
Author(s):  
Vladimir Povarov ◽  
Igor' Gusev ◽  
Sergey Rosnovsky ◽  
Dmitriy Statsura ◽  
Vladimir Kazansky ◽  
...  
Keyword(s):  
Water Purification ◽  
Drainage Water ◽  
Purification Method ◽  
Selective Sorbent ◽  
Iron Based ◽  
Purification Plant ◽  
Nickel Ferrocyanide ◽  
Satisfactory Quality

The article is dedicated to the assessment of the experience in drainage water purification from radionuclides using ion-selective purification method on Units 1,2 Novovoronezh-2 NPP. Application of an ion-selective sorbent based on nickel ferrocyanide, as well as the preliminary oxidation of corrosive origin radiongjuclides, allow to achieve a satisfactory quality of purification from Cs-134, Cs-137, Co-60, Co 58, Mn-54, Cr-51. However, this method turned out to be ineffective for drainage water purification from Be-7, Sb-124, Sb-125. The article presents a possible method for drainage water purification from Be-7, Sb-124, Sb-125 using an iron-based coagulant, prospects for the modernization of the ion-selective drainage water purification plant, as well as plans to improve methods for drainage water purification at Novovoronezh-2 NPP

Low cost and sustainable surface water purification methods using Moringa seeds and scallop powder followed by bio-sand filtration

2016 ◽  
Vol 17 (1) ◽  
pp. 125-137 ◽  
Author(s):  
Sharmin Zaman ◽  
Anowara Begum ◽  
K. S. Rabbani ◽  
Latiful Bari
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Water Purification ◽  
Health Effect ◽  
Water Layer ◽  
Sediment Layer ◽  
Sand Filtration ◽  
Clear Water ◽  
Purification Method

A simple and inexpensive water purification method was developed using natural coagulant (Moringa seed powder) and antibacterial agents (scallop powder) followed by bio-sand filtration. In this study, surface water from different sources (e.g. pond, canal, lake and river) treated with combined Moringa seed powder, and scallop powder (MOSP) at a ratio of 2:1 for 10 minutes showed a clear water layer at the top and a sediment layer at the bottom. The clear water was then passed through an eight-fold sari cloth and/or natural bio-sand filtration and the resulting water was found drinkable. The microbiological and physico-chemical quality of this water showed non-significant differences compared to the US EPA drinking water quality parameters. Moreover, no cytotoxic effect of MOSP with BHK-21 and HeLa cells, nor any bacterial endotoxins were observed, indicating use of MOSP does not pose any adverse health effect. Furthermore, the quality of 6 months stored water at room temperature was found acceptable, indicating the usefulness of this technology for drinking water purposes. On the other hand, the sediment or sludge produced in this process could be used in agricultural fields after proper composting. Therefore, this simple, inexpensive and ecofriendly method could be used in drinking water scarcity areas of the world.

AGEING MECHANISM OF PVDF FOLLOW-FIBER MEMBRANES USED IN WATER PURIFICATION PLANT

2019 ◽  
Vol 75 (7) ◽  
pp. III_341-III_350
Author(s):  
Yuki YONEZAWA ◽  
Takashi HASHIMOTO ◽  
Shinobu KAZAMA ◽  
Kumiko OGUMA ◽  
Kazuyoshi FUJIMURA ◽  
...  
Keyword(s):  
Water Purification ◽  
Fiber Membranes ◽  
Purification Plant

scholarly journals Deliberative architecture for smart sensors in the filtering operation of a water purification plant

2021 ◽  
Vol 1730 (1) ◽  
pp. 012088
Author(s):  
E. Mendoza ◽  
J. Andramuño ◽  
J. Núñez ◽  
I. Benítez
Keyword(s):  
Water Purification ◽  
Smart Sensors ◽  
Purification Plant

scholarly journals Iron Based Core-Shell Structures as Versatile Materials: Magnetic Support and Solid Catalyst

Catalysts ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 72
Author(s):  
Christian Zambrzycki ◽  
Runbang Shao ◽  
Archismita Misra ◽  
Carsten Streb ◽  
Ulrich Herr ◽  
...  
Keyword(s):  
Water Purification ◽  
Functional Materials ◽  
Core Material ◽  
Solid Catalyst ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
The Core ◽  
Shell Nanostructures ◽  
Sio2 Shell ◽  
Iron Based

Core-shell materials are promising functional materials for fundamental research and industrial application, as their properties can be adapted for specific applications. In particular, particles featuring iron or iron oxide as core material are relevant since they combine magnetic and catalytic properties. The addition of an SiO2 shell around the core particles introduces additional design aspects, such as a pore structure and surface functionalization. Herein, we describe the synthesis and application of iron-based core-shell nanoparticles for two different fields of research that is heterogeneous catalysis and water purification. The iron-based core shell materials were characterized by transmission electron microscopy, as well as N2-physisorption, X-ray diffraction, and vibrating-sample magnetometer measurements in order to correlate their properties with the performance in the target applications. Investigations of these materials in CO2 hydrogenation and water purification show their versatility and applicability in different fields of research and application, after suitable individual functionalization of the core-shell precursor. For design and application of magnetically separable particles, the SiO2 shell is surface-functionalized with an ionic liquid in order to bind water pollutants selectively. The core requires no functionalization, as it provides suitable magnetic properties in the as-made state. For catalytic application in synthesis gas reactions, the SiO2-stabilized core nanoparticles are reductively functionalized to provide the catalytically active metallic iron sites. Therefore, Fe@SiO2 core-shell nanostructures are shown to provide platform materials for various fields of application, after a specific functionalization.

Effective Measures for CO2 Reduction Harnessing the Potential Water Energy Present in the Water Service Industry

2010 ◽  
Vol 5 (3) ◽  
Author(s):  
Ohbuchi Yoshihiro ◽  
Sasaki Takanori ◽  
Sumitomo Hiroaki ◽  
Saito Susumu ◽  
Tanaka Yoshiaki
Keyword(s):  
Power Generation ◽  
Water Purification ◽  
Service Industry ◽  
Low Cost ◽  
Co2 Reduction ◽  
Clean Energy ◽  
Net Benefit ◽  
Private Company ◽  
Joint Project ◽  
Purification Plant

Sapporo Waterworks Bureau's (SWB's) measures for CO2 reduction started in 1982 with a hydropower project at the Moiwa Water Purification Plant (MWPP) (cap. 155,000 m3/day). Operation of the generator was temporarily discontinued in 2001 for full-scale reconstruction of the water purification plant (WPP); after the completion of the reconstruction, the power generation equipment was renewed, and the operation resumed as a joint project with a private company in 2007. Power generation is on-site since the hydropower generator within the MWPP area provides energy consumed at the MWPP and the adjoining Waterworks Museum. This power generation is expected to create an energy saving effect equivalent to 1,500 tons of CO2 and over 10 million yen of annual net benefit. In order to increase the usage rate of low-cost, clean energy like hydropower at the WPP, SWB has made a series of adjustments to the operating methods of the plant. Then, as a result, the generation covers 97% of the energy used on-site at present. Furthermore, SWB is considering introducing other hydropower facilities of this kind that harness water transmission energy from the Shiraikawa WPP (cap. 650,000 m3/day) to the major distribution reservoirs.

scholarly journals Consumer Satisfaction with the Services of Prosthetics and Orthotics Facilities

2009 ◽  
Vol 33 (1) ◽  
pp. 69-77 ◽  
Author(s):  
Joline Bosmans ◽  
Jan Geertzen ◽  
Pieter U. Dijkstra
Keyword(s):  
The Netherlands ◽  
Consumer Satisfaction ◽  
Daily Practice ◽  
Delivery Time ◽  
Satisfactory Quality

Consumer satisfaction with the services provided in a prosthetics and orthotics (P&O) facility has seldom been studied. The aim of this study was to analyze consumer satisfaction regarding the services provided by 15 P&O facilities in The Netherlands. Consumers ( n = 1,364) of these P&O facilities who were fitted with a prosthesis, orthopaedic shoes, an orthosis, or another device, were asked to rate the overall services provided and whether they were satisfied with the device provided and its delivery time. Additionally, they filled in a modified SERVQUAL questionnaire (see Appendix). Consumers gave the service provided by P&O facilities a mean overall rating of 8.1. The highest ratings were given by consumers fitted with a prosthesis (mean overall rating of services: 8.4). In total, 78% of the consumers were satisfied with the device provided and 93% with the delivery time. The results of our study showed that, on the SERVQUAL, 50% of the statements fulfilled the criteria for a satisfactory quality of the services. The overall consumer rating of the service provided by P&O facilities is high and depends on the device provided. The outcomes on the SERVQUAL were moderate. In future, it is important to study consumer satisfaction more extensively in order to improve the quality of P&O services in daily practice. Additionally, specific questionnaires need to be developed to measure all aspects of prosthetic and orthotic care, with the aim to improve the services.

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