Efficiency of Ozone, Activated Carbon and Microorganisms in Decolorisation of Pulp and Paper Mill Effluent

2009 ◽  
Vol 4 (2) ◽  
Author(s):  
W. Apiwatanapiwat ◽  
W. Phochinda ◽  
T. Kreetachat ◽  
P. Vaithanomsat
Keyword(s):  
Activated Carbon ◽  
Removal Efficiency ◽  
Retention Time ◽  
Paper Mill ◽  
Cod Removal ◽  
Color Removal ◽  
Pulp And Paper Mill ◽  
Paper Mill Effluent ◽  
Us Dollar ◽  
Color And Cod Removal

The efficiency of decolorisation and COD removal from pulp and paper mill effluent using ozone, activated carbon and microorganism were compared. The results showed that the highest color removal efficiency of 83.42% was obtained when ozone method was used with optimal pH 9 and retention time 60 min. However, the COD was decreased only by 5.50% at pH 9 and retention time 40 min. Similar COD removal efficiency of 68.99% was observed when activated carbon with pH 2 and retention time 180 min was employed and for microbial method, the COD removal efficiency of 77.67% was obtained when pH 7 and retention time 6 days was applied. While the efficiency in color removal using the microbial method was lower (36.2%) which was at pH 4.5 and retention time 2 days than that removed using activated carbon which was 79.79% at pH 2 and retention time 180 min. When an operation cost for each method was compared, it was found that the microbial treatment consumed the cost of 587.82 US dollar/1,000 L for color removal and 29,760 US dollar/1,000 L for COD removal whereas the ozone treatment consumed the lowest cost for both color and COD removal of 24.0 US dollar/1,000 L and 9.3 US dollar/1,000 L, respectively. Similarly, the activated carbon adsorption method consumed low cost for both color and COD removal of 40.62 US dollar/1,000 L.

Utilization of a small soda pulp and paper mill effluent for rice field irrigation

1997 ◽  
Vol 35 (2-3) ◽  
pp. 205-212 ◽  
Author(s):  
H. T. Adisesha ◽  
S. Purwati ◽  
P. R. Panggabean ◽  
S. E. Sarief
Keyword(s):  
Soil Analysis ◽  
Paper Mill ◽  
Exchange Capacity ◽  
Pulp And Paper ◽  
Rice Fields ◽  
Chemical Recovery ◽  
Pulp And Paper Mill ◽  
Paper Mill Effluent ◽  
Soda Pulp ◽  
Paddy Crop

Padalarang pulp and paper mill, a soda pulp and paper mill without chemical recovery, located near Bandung, Indonesia, discharges untreated effluent mixed with domestic waste water into surrounding rice fields. For more than 60 years, paddy has been harvested 3 times a year. An in-depth study to characterize the effluent, the soil and the biomass production was conducted to define the evidence. A field study using four experimental plots indicated that soil irrigated with effluent had a higher concentration of potassium, calcium, sodium ions and greater cation exchange capacity than near-by soil. Analysis of well water showed that the effluent had no effect on the ground water. A reduction of suspended solids and BOD occurred in the effluent while flowing through rice fields. The yields of paddy demonstrated significant positive effect of effluent either in dry or in rainy season, while zeolites as soil amendment did not give significant effect to the already high paddy crop yield.

Influence of crude oil and pulp and paper mill effluent on mixed infections of Trichodina cottidarium and T. saintjohnsi (Ciliophora) parasitizing Myoxocephalus octodecemspinosus and M. scorpius

1994 ◽  
Vol 72 (2) ◽  
pp. 247-251 ◽  
Author(s):  
R. A. Khan ◽  
D. E. Barker ◽  
K. Williams-Ryan ◽  
R. G. Hooper
Keyword(s):  
Crude Oil ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Contaminated Sediment ◽  
Pulp And Paper Mill ◽  
Paper Mill Effluent ◽  
Site Field ◽  
Myoxocephalus Scorpius ◽  
Longhorn Sculpin ◽  
Fish Hosts

Samples of longhorn sculpin (Myoxocephalus octodecemspinosus) were exposed to sediment contaminated with crude oil or pulp and paper mill effluent for periods up to 13 months in the laboratory. Other samples were collected at sites where crude oil or effluent from a pulp and paper mill are discharged. The intensity of gill infections of Trichodina spp. on exposed fish was significantly higher than on controls 5, 9, and 13 months after exposure. The intensity of the ciliates was also greater on sculpins collected near an oil-receiving terminal than on those sampled 5 km from the polluted site. Field collections of longhorn and shorthorn (Myoxocephalus scorpius) sculpins at and distant from a pulp and paper mill had high and low intensities of the ciliates, respectively. Similarly, the intensity of trichodinid ciliates was also significantly greater in longhorn sculpins exposed to effluent-contaminated sediment than in controls 5 months after exposure. The results suggest that the intensity of gill-inhibiting species such as trichodinids in susceptible fish hosts increases after chronic exposure to crude oil and to pulp and paper mill effluent, and the parasites may serve as indicators of pollution.

COD removal of phenolic wastewater by biological activated carbon-sequencing batch reactor in the presence of 2,4-DCP

2000 ◽  
Vol 42 (5-6) ◽  
pp. 171-178 ◽  
Author(s):  
S.-R. Ha ◽  
L. Qishan ◽  
S. Vinitnantharat
Keyword(s):  
Activated Carbon ◽  
Retention Time ◽  
Sequencing Batch Reactor ◽  
Batch Reactor ◽  
Cod Removal ◽  
High Loading ◽  
Treatment Efficiency ◽  
Biological Activated Carbon ◽  
Treatment Performance ◽  
Phenolic Wastewater

Treatment performance of COD in the presence of 2,4-dichlorophenol (2,4-DCP) was explored by using a biological activated carbon-sequencing batch reactor (BAC-SBR) system. Two COD levels of basic substrate were synthesized with a mixture of phenol and 2,4-dichlorophenol. Although effluent concentration was increased with reduction of sludge retention time (SRT) from 8-days to 3-days, treatment efficiency was indicated more than 90% of COD in all SRTs applied. Reactors operated with acclimated sludge could be expected to cope with quite high loading of inhibitory substances.

Removal of colour from a kraft pulp and paper mill effluent in Kenya using a combination of electrochemical method and phosphate rock

2007 ◽  
Vol 55 (6) ◽  
pp. 15-22 ◽  
Author(s):  
L. Etiégni ◽  
O.D. Oricho ◽  
K. Ofosu-Asiedu ◽  
K.A. Senelwa ◽  
K.G. Surtan ◽  
...  
Keyword(s):  
Electrochemical Method ◽  
Phosphate Rock ◽  
Complete Removal ◽  
Paper Mill ◽  
Wood Ash ◽  
Electrochemical Process ◽  
Pulp And Paper Mill ◽  
Allowable Limit ◽  
Paper Mill Effluent ◽  
Treated Effluent

A study was undertaken to remove colour from a kraft mill's treated effluent in Kenya and determine the suitability of phosphate rock to replace wood ash during the electrochemical process. The electrochemical method alone, electrochemical combined with alum (ELCAL), wood ash leachate (ELCAS) and phosphate rock (ELPHOS) solutions at a rate of 165 to 1,000 g/m3 were tested. Effluent characteristics were determined after complete removal of colour. Same reduction rates of TS (85%) and TSS (89%) were recorded by ELCAS and ELPHOS. However, ELPHOS removed more COD (86 to 91%) and more BOD (85 to 92%) than ELCAS. Furthermore, the pH of ELPHOS treated solution was 9.3, within the Kenya Local Government's allowable limit. Power reduction with ELCAS and ELPHOS varied between 53 to 73% and 49 to 69% respectively but the difference was not statistically significant. Overnight aeration further improved the quality of ELCAS and ELPHOS treated effluent, reducing BOD and COD values to 0 mg/l. ELPHOS cost ($0.29/m3) was nevertheless three times higher than that of ELCAS ($0.10/m3), mainly because of free wood ash. ELPHOS did not also increase effluent phosphorus. It was therefore recommended that various ways be explored in making ELPHOS more economical to replace ELCAS.

scholarly journals COD reduction studies of paper mill effluent using a batch recirculation electrochemical method

2011 ◽  
Vol 13 (3) ◽  
pp. 37-41
Author(s):  
T. Kannadasan ◽  
V. Sivakumar ◽  
C. Basha ◽  
Arun Parwate ◽  
K. Senthilkumar ◽  
...  
Keyword(s):  
Electrochemical Method ◽  
Supporting Electrolyte ◽  
Chloride Concentration ◽  
Paper Mill ◽  
Electrochemical Reactor ◽  
Pulp And Paper ◽  
Pulp And Paper Mill ◽  
Cod Reduction ◽  
Paper Mill Effluent ◽  
Reservoir Volume

COD reduction studies of paper mill effluent using a batch recirculation electrochemical method The conventional method of treating pulp and paper mill effluent involves the biological oxidation by bacterial action of aerobic and anaerobic conditions and aerobic lagooning method, which are less efficiency of removing COD. To overcome the drawbacks of the existing treatment process, in the present work an attempt has been made to study the electro oxidative destruction of the pulp and paper mill effluent using an electrochemical method and the effect of various parameters such as concentration of supporting electrolytes, current densities, flow rates of electrolyte and reservoir volumes of the effluent were conducted. From the experimental results it is observed that the rate of reduction of COD of the effluent increased with an increase in the supporting electrolyte (sodium chloride) concentration, current density where as it decreased with increase in the reservoir volume and the flow rate of electrolyte. The residence time distributions studies have also been conducted to study the behavior of the electrochemical reactor.

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