scholarly journals Effects of Variation of Flow and Accumulation of Suspended Solids on the Performance of Anaerobic/Aerobic Biofilm System Applied to Grey Water Treatment

1991 ◽  
Vol 14 (4) ◽  
pp. 233-242,231
Author(s):  
Takuya OKUBO ◽  
Masaki SAGEHASHI ◽  
Nobuyuki OHTSUKA ◽  
Mitsumasa OKADA ◽  
Akihiko MURAKAMI
Keyword(s):  
Water Treatment ◽  
Suspended Solids ◽  
Grey Water

scholarly journals Use of Aloe vera as an Organic Coagulant for Improving Drinking Water Quality

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2024
Author(s):  
Abderrezzaq Benalia ◽  
Kerroum Derbal ◽  
Amel Khalfaoui ◽  
Raouf Bouchareb ◽  
Antonio Panico ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Suspended Solids ◽  
Aluminum Sulfate ◽  
Aloe Vera ◽  
Drinking Water Treatment ◽  
Water Turbidity ◽  
Turbidity Removal ◽  
Maximum Turbidity ◽  
Optimal Ph

The coagulation–flocculation–sedimentation process is widely used for removal of suspended solids and water turbidity reduction. The most common coagulants used to conduct this process are aluminum sulfate and ferric sulfate. In this paper, the use of Aloe vera as a natural-based coagulant for drinking water treatment was tested. The bio-coagulant was used in two different forms: powder as well as liquid; the latter was extracted with distilled water used as a solvent. The obtained results showed that the use of the natural coagulant (Aloe vera) in both powder (AV-Powder) and liquid (AV-H2O) forms reduced the water turbidity at natural pH by 28.23% and 87.84%, respectively. Moreover, it was found that the use of the two previous forms of bio-coagulant for drinking water treatment had no significant influence on the following three parameters: pH, alkalinity, and hardness. The study of the effect of pH on the process performance using Aloe vera as a bio-coagulant demonstrated that the maximum turbidity removal efficiency accounted for 53.53% and 88.23% using AV-Powder and AV-H2O, respectively, at optimal pH 6.

Grey water treatment and simultaneous surfactant recovery using UF and RO process

2017 ◽  
Vol 52 (14) ◽  
pp. 2262-2273 ◽  
Author(s):  
T. Venkatesh ◽  
S. Senthilmurugan
Keyword(s):  
Water Treatment ◽  
Grey Water ◽  
Surfactant Recovery

Grey water treatment and reuse by using RBC: A kinetic approach

2010 ◽  
Vol 23 (1-3) ◽  
pp. 89-94 ◽  
Author(s):  
Ahmet Baban ◽  
Selda Murat Hocaoglu ◽  
Elif A. Atasoy ◽  
Kemal Gunes ◽  
Selma Ayaz ◽  
...  
Keyword(s):  
Water Treatment ◽  
Kinetic Approach ◽  
Grey Water

Experimental investigation on water treatment by the combined nano MgO–nanofiltration technique

2011 ◽  
Vol 63 (11) ◽  
pp. 2542-2546 ◽  
Author(s):  
Keqiang Zhang ◽  
Yi An ◽  
Feng Wang ◽  
Lingling Lin ◽  
Haigang Guo
Keyword(s):  
Heavy Metals ◽  
Experimental Investigation ◽  
Water Treatment ◽  
Suspended Solids ◽  
Pollutant Removal ◽  
Polluted Water ◽  
Operating Pressure ◽  
Nitrogen Species ◽  
Combined System ◽  
Mg Content

A combined system using nano MgO and nanofiltration (NF) membrane was established to purify polluted water in this experiment. The turbidity, permanganate index, UVA254, colony counts and the concentrations of NO3−, NO2−, NH4+, Fe, Mn and Mg of the effluents from each unit of this combined system were measured to investigate the pollutant removal of this system. Based on the results obtained, the combined nano MgO–NF system could efficiently remove many kinds of pollutants in this experiment, including organic matter, nitrogen species, heavy metals, suspended solids and bacteria. And the effluents could meet the standard of drinking water. Furthermore, increasing the nano MgO dosage could not elevate the removal ratio of the pollutants, but only increase the Mg content of the effluent. Thus, 0.05 g L−1 of nano MgO may be a suitable dosage for 2,000 L of polluted water treatment. Also, the operating pressure of NF membrane had no significant effect on pollutant removal when the operating pressure of NF membrane was increased from 0.3 to 0.9 MPa.

scholarly journals USE OF MODIFIED REAGENTS SOLUTIONS WHEN PREPARING DRINKING WATER

2021 ◽  
Vol 6 (166) ◽  
pp. 141-145
Author(s):  
S. Dushkin ◽  
T. Shevchenko ◽  
O. Galkina
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Suspended Solids ◽  
Aluminum Sulfate ◽  
Technology Development ◽  
Environmental Safety ◽  
Aluminum Salts ◽  
The Cost ◽  
Clarified Water

Currently, attention is paid to the intensification of the process of natural and wastewater treatment, improvement of technology, development of new effective methods of intensification of water treatment. This will simplify the existing technology of water treatment, reduce labor-intensive processes of preparation and dosing of reagents, reduce the cost of operating treatment plants, increase their productivity, improve quality and reduce the cost of treated water. Treatment of water with a modified coagulant solution allows to increase the hydraulic size of the coagulated suspension. The strongest effect of the modified coagulant solution has on the hydraulic suspension size of 0.2 mm/s and less, i.e. the smallest and the suspension, which is difficult to remove, which creates conditions for more intensive sedimentation in settling tanks and improve the quality of water clarification and fed to fast filters. It has been experimentally determined that the treatment of water with a modified solution of aluminum sulfate coagulant should be performed when the content of suspended solids in the clarified water is up to 100–150 mg / dm3. The color of the clarified water during treatment with a modified solution of aluminum sulfate coagulant does not depend on the content of suspended solids and is 1.5-1.6 times lower than the color than when using a conventional coagulant solution. It is established that the use of a modified solution of aluminum sulfate coagulant in water purification can reduce the residual aluminum content in clarified water by an average of 50-60%. The results of researches of the modified solutions of reagents which are used at preparation of drinking water are presented. It is established that water treatment with a modified solution of aluminum sulfate coagulant allows to improve the quality of drinking water preparation by suspended solids, color, reduce the content of aluminum salts in the clarified water, thereby increasing the environmental safety of drinking water.

scholarly journals Grey Water Treatment for Smart Cities using Iot

2019 ◽  
Vol 8 (2S5) ◽  
pp. 114-116
Keyword(s):  
Water Treatment ◽  
Storage Tank ◽  
Smart Cities ◽  
Piping System ◽  
Water Recycling ◽  
Grey Water ◽  
Recycling System ◽  
System Components ◽  
Irrigation Purpose ◽  
And Storage

The paper proposes a grey water recycling system that will provide water to meet the needs of the house and irrigation purpose around the house. The water can be used for cleaning and flushing purposes. The grey water recycling system components were designed and they consist of piping system, diversion system, Filtration and storing system. The project includes collection tank, filtration tanks and storage tank. The filtering media used are Alum and Biosand.The filtered water is stored in storage tank and the overall process will be controlled by Arduino Mega, monitored by IoT Technology.

scholarly journals Design, development and performance evaluation of small scale grey water treatment plant

2018 ◽  
Vol 11 (2) ◽  
pp. 335-338
Author(s):  
S.T. Patil ◽  
P.R. Juvekar ◽  
U.S. Kadam ◽  
M.S. Mane ◽  
S.B. Nandgude
Keyword(s):  
Performance Evaluation ◽  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Small Scale ◽  
Design Development ◽  
Grey Water ◽  
And Performance
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