scholarly journals Practical implementation of true on-site water recycling systems for hand washing and toilet flushing

2020 ◽  
Vol 7 ◽  
pp. 100051
Author(s):  
Eva Reynaert ◽  
Esther E. Greenwood ◽  
Bonginkosi Ndwandwe ◽  
Michel E. Riechmann ◽  
Rebecca C. Sindall ◽  
...  
Keyword(s):  
Hand Washing ◽  
Practical Implementation ◽  
Water Recycling ◽  
Toilet Flushing ◽  
Site Water ◽  
Recycling Systems

Current status of water reuse systems in Korea

2004 ◽  
Vol 50 (2) ◽  
pp. 309-314 ◽  
Author(s):  
S. Noh ◽  
I. Kwon ◽  
H.-M. Yang ◽  
H.-L. Choi ◽  
H. Kim
Keyword(s):  
Water Reuse ◽  
Water Shortage ◽  
Treated Wastewater ◽  
Current Status ◽  
Water Recycling ◽  
Recycled Water ◽  
Produce Water ◽  
Service Water ◽  
Site Water ◽  
Recycling Systems

In Korea, the current water resources will fall short by 2.6 billion tons to meet the 38 billion ton water demand in the year 2020. To overcome the future water shortage, it is desirable to minimize water consumption and to reuse treated wastewater. There are a total of 99 on-site water-recycling systems in the country. The potential capacity of the 99 systems is 429 thousands tons/day, which is 3.6% of the total service water. Compared to other industrialized countries, the number of the water recycling systems in Korea is extremely small. This is mainly due to the following reasons. First, in Korea, any building with more than 60,000 m2 of total floor space is required to install a water reuse system by law. However, only less than 0.5% of the total buildings have more than 10,000 m2. Therefore, the regulation is ineffective and merely nominal. Second, service water is supplied at low charge (0.20 US-dollar/m3 water). The inexpensive service water often discourages people to recycle treated wastewater. Third, people still think recycled water is not clean enough and can cause diseases. Therefore, they should be informed that a well-maintained recycling system does not fail to produce water with high quality.

On-site water recycling systems in Japan

2003 ◽  
Vol 3 (3) ◽  
pp. 149-154 ◽  
Author(s):  
H. Yamagata ◽  
M. Ogoshi ◽  
Y. Suzuki ◽  
M. Ozaki ◽  
T. Asano
Keyword(s):  
Water Supply ◽  
Water Reuse ◽  
Potable Water ◽  
Reclaimed Water ◽  
Urban Water ◽  
Water Recycling ◽  
Technical Problems ◽  
Recycling System ◽  
Site Water ◽  
Recycling Systems

Non-potable urban water reuse is Japan's main water reuse practice, which includes water for environmental uses, in-stream flow augmentation, toilet flushing, and industrial reuse. On-site water recycling systems reclaim wastewater on site as well as harvest rainwater in one or more large buildings and distributing the reclaimed water within the buildings for non-potable reuse. Based on our survey conducted in 1999 on current status of on-site water recycling systems in 23 wards of the Tokyo Metropolitan Government District, the following findings are reported in this paper: (1) on the average, 61% of non-potable water demand is met by reclaimed water, and the deficit is made up by tap water from city water supply, (2) biological treatment or ultrafiltration processes can provide reliable treatment and suitable water quality. Some technical problems such as odor from on-site treatment facilities have occurred in a few buildings, (3) there has been no serious accident involving human health by accidentally ingesting reclaimed water, and (4) there is a scale merit in the construction cost of on-site water recycling systems. An on-site wastewater recycling system larger than 100 m3/d is more economically justifiable when compared to a conventional domestic water supply system. An on-site water recycling system can provide an effective, safe, and economical urban water resource for non-potable water reuse applications.

Polyacrylic acid and formulations based on it as inhibitors of deposit formation in water-recycling systems

2009 ◽  
Vol 82 (10) ◽  
pp. 1894-1897
Author(s):  
I. V. Shestak ◽  
E. V. Vorob’eva ◽  
I. I. Basalyga ◽  
N. P. Krut’ko ◽  
A. D. Vorob’ev
Keyword(s):  
Polyacrylic Acid ◽  
Water Recycling ◽  
Deposit Formation ◽  
Recycling Systems

A concept for the development of invariant automated electric drives for water recycling systems with fan cooling towers

2007 ◽  
Vol 78 (11) ◽  
pp. 621-627 ◽  
Author(s):  
N. V. Kiyanov ◽  
O. V. Kryukov ◽  
D. N. Pribytkov ◽  
A. V. Gorbatushkov
Keyword(s):  
Cooling Towers ◽  
Water Recycling ◽  
Electric Drives ◽  
Fan Cooling ◽  
Recycling Systems

scholarly journals The study of inhibiting structural material corrosion in water recycling systems by sodium hydroxide

2017 ◽  
Vol 2 (1 (86)) ◽  
pp. 21-28 ◽  
Author(s):  
Alexei Pilipenko ◽  
Hanna Pancheva ◽  
Anna Reznichenko ◽  
Oksana Myrgorod ◽  
Nataliya Miroshnichenko ◽  
...  
Keyword(s):  
Structural Material ◽  
Sodium Hydroxide ◽  
Water Recycling ◽  
Recycling Systems

scholarly journals Water Consumption in the Belarusian Woodland

2018 ◽  
Author(s):  
Keyword(s):  
Water Resources ◽  
Water Consumption ◽  
Water Saving ◽  
Water Recycling ◽  
Water Losses ◽  
Recycling Systems

The paper presents the results of researches of the Belarusian Woodland water consumption over the period from 2000 to 2015. We have made a conclusion about relatively low effectiveness of the water resources use and have shown the necessity of rational water consumption due to introduction of water-saving techniques, water recycling systems, as well as minimization of water losses during transportation.

Water Recycling Systems

1982 ◽  
Vol 14 (9-11) ◽  
pp. 1393-1429 ◽  
Author(s):  
R D Heaton
Keyword(s):  
Environmental Protection Agency ◽  
Water Reuse ◽  
Municipal Wastewater ◽  
Wastewater Reuse ◽  
Water Recycling ◽  
Wastewater Reclamation ◽  
Unit Process ◽  
Additional Information ◽  
Recycling Systems ◽  
Water District

Water recycling systems implies the initial treatment requirements for various water reuse schemes including unit process descriptions, performance and cost data. Several volumes of text are required for adequate coverage of the above subject and this paper will only attempt to highlight important areas, provide guidelines and give needed direction. Cost functions of one important U.S. Research/ Demonstration Facility (Water Factory 21) are given in more detail. Much of the data has been summarized from four important publications shown below and the reader seeking additional information is encouraged to examine these in detail.1.Water Reuse and Recycling - Volume 2 - Evaluation of Treactment Technology, 1979, U.S. Office of Water Research & Technology (OWRT). Report by Culp/Wesner/Culp Engineers, NTIS #PB 80-131469.2.Guidelines for Water Reuse, August 1980, U.S. Environmental Protection Agency. Report by Camp Dresser & McKee Engineers, NTIS #PB 81-105017.3.Evaluation of, Membrane. Processes and Their Role in Wastewater Reclamation, 1981. OWRT sponsored report by Orange County Water District, Fountain Valley, California, USA.4.Municipal Wastewater Reuse News. OWRT sponsored monthly newsletter by AWWA Research Foundation, Denver, Colorado, USA.

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