PILOT PLANT STUDY ON NATURAL WATER COAGULANTS AS COAGULAN AIDS FOR WATER SUPPLY BINA B.*,SHAH MAN... more PILOT PLANT STUDY ON NATURAL WATER COAGULANTS AS COAGULAN AIDS FOR WATER SUPPLY BINA B.*,SHAH MANSOURI MR,CHINAII ... of natural material such as Starch/Gum Tragacanth, Fenugreek and Yeast as coagulant aids in conjunction with comercial alum. ...
... Methods. Aerobic digestion was carried out in a 7.5 liters bioreactor (rectangular glass tank... more ... Methods. Aerobic digestion was carried out in a 7.5 liters bioreactor (rectangular glass tank 23*16*21 Cm) that was loaded with 5 liters mixed sludge from this plant. This experimental research was conducted at the Environmental Health Laboratory of Isfahan Faculty of Health. ...
Gavkhoniis one of the most important wetland in lran, located in the south east of lsfahan city, ... more Gavkhoniis one of the most important wetland in lran, located in the south east of lsfahan city, and is considered as a good place for birds and wild life. This natural ecosystem has many specific characteristics which depend on Zayandehrud river water quality. The down-stream and wetland is highly polluted recently, because of untreated wastewater discharged lrom municipal and industrial sources into the river. High water uptake from the river also increases the degree of the pollution of the wetland. Therefore, it is important to determine the quality of this ecosystem for the wild iife. To evaluale the quality ol water, sludge, soil and plant of Govkhoniwetland, 33 samples were collected, and analyzed for some of the heavy metals by atomic absorption spectrophotometer. Alkalinity and chloride of the water were determined using titration methods. The electrical conductivity of the samples was also determined using conductivity meter. The results showed that the mean concentration ...
Environmental science and pollution research international, Jan 3, 2016
In this paper, biochemical hydrogen potential (BHP) tests were conducted to investigate H2 produc... more In this paper, biochemical hydrogen potential (BHP) tests were conducted to investigate H2 production from different substrate with acid-treated anaerobic digested sludge at the mesophilic range. The sludge was collected from an anaerobic digester and was subjected to sulfuric acid pretreatments at pH 3 for 24 h. The effects of substrate type (glucose, fructose, and sucrose as carbon source) were investigated in batch experiments. Results showed that substrate degradation rate for all of the substrates was up 95 % and the electron equivalent balance showed good closure for glucose and sucrose. Batch experiments showed that the maximum molar hydrogen yield with glucose, fructose, and sucrose was 3.27, 3.16, and 6.46 mol H2/mol of substrate. The maximum cumulative biohydrogen production was 1552, 1487, and 1366 mL and maximum hydrogen production rate was 308, 279, and 275 mL/h for glucose, sucrose, and fructose, respectively. The experimental results suggest that the formation of hydr...
Biocarriers are an important component of anaerobic moving bed biofilm reactors (AMBBRs). In this... more Biocarriers are an important component of anaerobic moving bed biofilm reactors (AMBBRs). In this study, the capability of cigarette filter rods (CFRs) as a biocarrier in an anaerobic moving bed biofilm reactor was evaluated. Two similar lab-scale anaerobic moving bed biofilm reactors were undertaken using Kaldnes-K3 plastic media and cigarette filter rods (wasted filters from tobacco factories) as biofilm attachment media for wastewater treatment. Organic substance and total posphours (TP) removal was investigated over 100 days. Synthetic wastewater was prepared with ordinary water and glucose as the main sources of carbon and energy, plus balanced macro- and micro-nutrients. Process performance was studied by increasing the organic loading rate (OLR) in the range of 1.6-4.5 kg COD/m3 x d. The COD average removal efficiency were 61.3% and 64.5% for AMBBR with cigarette filter rods (Reactor A) and AMBBR with Kaldnes plastic media (Reactor B), respectively. The results demonstrate that the performance of the AMBBR containing 0.25 litres of cigarette filters was comparable with a similar reactor containing 1.5 litres of Kaldnes plastic media. An average phosphorus removal of 67.7% and 72.9% was achieved by Reactors A and B, respectively.
PILOT PLANT STUDY ON NATURAL WATER COAGULANTS AS COAGULAN AIDS FOR WATER SUPPLY BINA B.*,SHAH MAN... more PILOT PLANT STUDY ON NATURAL WATER COAGULANTS AS COAGULAN AIDS FOR WATER SUPPLY BINA B.*,SHAH MANSOURI MR,CHINAII ... of natural material such as Starch/Gum Tragacanth, Fenugreek and Yeast as coagulant aids in conjunction with comercial alum. ...
... Methods. Aerobic digestion was carried out in a 7.5 liters bioreactor (rectangular glass tank... more ... Methods. Aerobic digestion was carried out in a 7.5 liters bioreactor (rectangular glass tank 23*16*21 Cm) that was loaded with 5 liters mixed sludge from this plant. This experimental research was conducted at the Environmental Health Laboratory of Isfahan Faculty of Health. ...
Gavkhoniis one of the most important wetland in lran, located in the south east of lsfahan city, ... more Gavkhoniis one of the most important wetland in lran, located in the south east of lsfahan city, and is considered as a good place for birds and wild life. This natural ecosystem has many specific characteristics which depend on Zayandehrud river water quality. The down-stream and wetland is highly polluted recently, because of untreated wastewater discharged lrom municipal and industrial sources into the river. High water uptake from the river also increases the degree of the pollution of the wetland. Therefore, it is important to determine the quality of this ecosystem for the wild iife. To evaluale the quality ol water, sludge, soil and plant of Govkhoniwetland, 33 samples were collected, and analyzed for some of the heavy metals by atomic absorption spectrophotometer. Alkalinity and chloride of the water were determined using titration methods. The electrical conductivity of the samples was also determined using conductivity meter. The results showed that the mean concentration ...
Environmental science and pollution research international, Jan 3, 2016
In this paper, biochemical hydrogen potential (BHP) tests were conducted to investigate H2 produc... more In this paper, biochemical hydrogen potential (BHP) tests were conducted to investigate H2 production from different substrate with acid-treated anaerobic digested sludge at the mesophilic range. The sludge was collected from an anaerobic digester and was subjected to sulfuric acid pretreatments at pH 3 for 24 h. The effects of substrate type (glucose, fructose, and sucrose as carbon source) were investigated in batch experiments. Results showed that substrate degradation rate for all of the substrates was up 95 % and the electron equivalent balance showed good closure for glucose and sucrose. Batch experiments showed that the maximum molar hydrogen yield with glucose, fructose, and sucrose was 3.27, 3.16, and 6.46 mol H2/mol of substrate. The maximum cumulative biohydrogen production was 1552, 1487, and 1366 mL and maximum hydrogen production rate was 308, 279, and 275 mL/h for glucose, sucrose, and fructose, respectively. The experimental results suggest that the formation of hydr...
Biocarriers are an important component of anaerobic moving bed biofilm reactors (AMBBRs). In this... more Biocarriers are an important component of anaerobic moving bed biofilm reactors (AMBBRs). In this study, the capability of cigarette filter rods (CFRs) as a biocarrier in an anaerobic moving bed biofilm reactor was evaluated. Two similar lab-scale anaerobic moving bed biofilm reactors were undertaken using Kaldnes-K3 plastic media and cigarette filter rods (wasted filters from tobacco factories) as biofilm attachment media for wastewater treatment. Organic substance and total posphours (TP) removal was investigated over 100 days. Synthetic wastewater was prepared with ordinary water and glucose as the main sources of carbon and energy, plus balanced macro- and micro-nutrients. Process performance was studied by increasing the organic loading rate (OLR) in the range of 1.6-4.5 kg COD/m3 x d. The COD average removal efficiency were 61.3% and 64.5% for AMBBR with cigarette filter rods (Reactor A) and AMBBR with Kaldnes plastic media (Reactor B), respectively. The results demonstrate that the performance of the AMBBR containing 0.25 litres of cigarette filters was comparable with a similar reactor containing 1.5 litres of Kaldnes plastic media. An average phosphorus removal of 67.7% and 72.9% was achieved by Reactors A and B, respectively.
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