Research on Molybdenum Removal from Water Polluted for Drinking

Water polluted by molybdenum was treated with the process of pre-oxidation adsorption-coagulation-sedimentation-filtration. Powdered activated carbon can adsorb effectively low concentration molybdenum in water. Potassium permanganate can enhance the adsorption effect of activated carbon. The water treated was up to the Standard for Dinking Water Quality of China, in the condition of molybdenum concentration 0.95 mg/L-1.10 mg/L, turbidity <2 NTU and colority <15 units. And the treatment process is as pre-oxidation 30 min with potassium permanganate concentration of 1 mg/L, adsorption 30 min with powdered activated carbon concentration of 40 mg/L, coagulation 30 min with aluminium polychlorid of 40mg/L and polyacrylamide of 0.8mg/L, sedimentation 90 min, and filtration rate 4 m/h.

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Improvement of water quality of remnant from chemical retting of coconut fibre through electrocoagulation and activated carbon treatment

Journal of Cleaner Production ◽

10.1016/j.jclepro.2018.11.011 ◽

2019 ◽

Vol 210 ◽

pp. 630-637 ◽

Cited By ~ 7

Author(s):

Seiko Jose ◽

Leena Mishra ◽

Sayandeep Debnath ◽

Sourav Pal ◽

Prabhat K. Munda ◽

...

Keyword(s):

Water Quality ◽

Activated Carbon ◽

Coconut Fibre ◽

Chemical Retting ◽

Carbon Treatment

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Studies on Water Quality of Mokokchung District, Nagaland, India, and Removal of Trace Elements Using Activated Carbon Prepared from Locally Available Bio-Waste

Handbook of Environmental Materials Management ◽

10.1007/978-3-319-58538-3_92-1 ◽

2017 ◽

pp. 1-32

Author(s):

Daniel Kibami

Keyword(s):

Water Quality ◽

Trace Elements ◽

Activated Carbon

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Influence of powdered activated carbon addition on water quality, sludge properties, and microbial characteristics in the biological treatment of commingled industrial wastewater

Journal of Hazardous Materials ◽

10.1016/j.jhazmat.2015.03.070 ◽

2015 ◽

Vol 295 ◽

pp. 1-8 ◽

Cited By ~ 21

Author(s):

Qing-Yuan Hu ◽

Meng Li ◽

Can Wang ◽

Min Ji

Keyword(s):

Water Quality ◽

Activated Carbon ◽

Industrial Wastewater ◽

Biological Treatment ◽

Powdered Activated Carbon ◽

Carbon Addition ◽

Microbial Characteristics ◽

Sludge Properties

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Impact of Municipal Wastewater on the Quality of the River Sava

Water Science & Technology ◽

10.2166/wst.1990.0040 ◽

1990 ◽

Vol 22 (5) ◽

pp. 275-280

Author(s):

S. Tedeschi

Keyword(s):

Water Quality ◽

Oxygen Saturation ◽

Municipal Wastewater ◽

Treatment Process ◽

Fish Kills ◽

The Past ◽

Heavy Pollution ◽

Zagreb Area ◽

Pollution Loads

The River Sava is very polluted in certain sections. At times, the dissolved oxygen is completely exhausted (1.0 to 3.0 mg O2/l) resulting in frequent massive fish kills. The water quality has significantly deteriorated during the past few decades, due to the industry developed in the watershed and the increased population in the area. Especially heavy pollution loads come from the greater Zagreb area (153 t BOD5/day). Treating the wastewater from Zagreb could upgrade the water quality of the Sava, and 68 to 72% oxygen saturation could be achieved even under the most unfavourable conditions. Particular attention should be given to the choice of the treatment process, due to the planned construction of multi-purpose reservoirs along the Sava.

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Reuse of effluent discharged from tannery wastewater treatment plants by powdered activated carbon and ultrafiltration combined reverse osmosis system

Journal of Water Reuse and Desalination ◽

10.2166/wrd.2016.001 ◽

2016 ◽

Vol 7 (1) ◽

pp. 97-102 ◽

Cited By ~ 1

Author(s):

Am Jang ◽

Jong-Tae Jung ◽

Hayoung Kang ◽

Hyung-Soo Kim ◽

Jong-Oh Kim

Keyword(s):

Water Quality ◽

Wastewater Treatment ◽

Activated Carbon ◽

Reverse Osmosis ◽

Wastewater Treatment Plants ◽

Oxygen Demand ◽

Powdered Activated Carbon ◽

Tannery Wastewater ◽

Combined System ◽

Treatment Processes

We evaluate the applicability of a reverse osmosis (RO) system that combines powdered activated carbon (PAC) and ultrafiltration (UF) to treat the effluent discharged from tannery wastewater treatment plants. Conventional treatment processes such as neutralization, clariflocculation, and biological processes are used to clean the effluent before feeding to the PAC and UF combined RO system. The efficiency of the combined system was evaluated using the chemical oxygen demand Mn (CODMn), color, pH, turbidity, total nitrogen, total phosphate, and conductivity. The PAC was effective in greatly reducing the CODMn and color. The turbidity and silt density index of the UF permeate satisfied the water quality indices required for the RO feed. The RO system was constantly maintained at approximately 75% RO recovery, and the RO permeate satisfied the water quality requirements for reusing the processed water. Therefore, the PAC-UF combined RO system can be used to process effluent discharged from tannery wastewater treatment plants for reuse.

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Study on the Micro-Polluted Water Treatment by GAC-UF

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.113-116.2049 ◽

2010 ◽

Vol 113-116 ◽

pp. 2049-2052

Author(s):

Jin Long Zuo

Keyword(s):

Water Quality ◽

Drinking Water ◽

Water Treatment ◽

Suspended Solids ◽

Treatment Process ◽

Drinking Water Treatment ◽

Polluted Water ◽

Total Removal ◽

Water Treatment Process

Nowadays drinking water resource has been polluted, while the conventional treatment process cannot effectively remove polluted matters. In order to tackle this problem, the granular activated carbon (GAC) and ultrafiltration membrane (UF) were introduced into drinking water treatment process. The results revealed that when treat the micro-polluted water the effluent water quality of turbidity, permanganate index and color can reach 0.1NTU, 1.3mg/L-2.3mg/L and 5 degree respectively with GAC-UF process. And the total removal efficiency of turbidity, permanganate index and color can reach 98%-99%, 70%~75% and 60% respectively. The GAC can effectively remove organic matters, while the UF membrane can effectively remove suspended solids, colloids. The GAC-UF combined process can get a good water quality when treat the micro-polluted water.

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