scholarly journals A Short Communication on Wastewater Treatment Techniques Used in Pharmaceutical Plant

2021 ◽  
pp. 167-172
Author(s):  
. Simran ◽  
Nishant Thakur ◽  
Karishma Mahajan
Keyword(s):  
Membrane Separation ◽  
Advanced Treatment ◽  
Pharmaceutical Wastewater ◽  
Activated Carbon Adsorption ◽  
Effluent Quality ◽  
Treatment Techniques ◽  
Organic Debris ◽  
Carbon Adsorption ◽  
Pharmaceutical Plant ◽  
High Concentrations

Toxic and difficult to biodegrade pharmaceutical wastewater is complex in composition with high concentrations of organic debris and microorganisms. There may still exit quantities of suspended particles and dissolved organic materials even after further treatment. Advanced treatment is required to improve the quality of pharmaceutical wastewater discharge. In this study, the pharmaceutical technology categorization has been established, and the features of pharmaceutical wastewater effluent quality have been summarized. On the other hand, The methods of advanced treatment of pharmaceutical wastewater have been incorporate, including coagulation and sedimentation, flotation, activated carbon adsorption, membrane separation, advanced oxidation processes, membrane separation, and biological treatment. In the meanwhile, each process's features were specified.

Study on Combined Process of Adsorption-Membrane Separation for Military Toxicant VX Polluted Municipal Water Treatment

2013 ◽  
Vol 361-363 ◽  
pp. 789-792 ◽  
Author(s):  
Xiao Jie Wang ◽  
En Feng Chen ◽  
Yun Zhe Ji
Keyword(s):  
Activated Carbon ◽  
Water Treatment ◽  
Reverse Osmosis ◽  
Membrane Separation ◽  
Activated Carbon Adsorption ◽  
Combined Process ◽  
Effluent Quality ◽  
Adsorption Performance ◽  
Carbon Adsorption ◽  
Municipal Water

It developed test devices and carried out test adopting combined process of adsorption-membrane separation targeted at municipal water polluted by military toxicant VX. Investigation on purification effects of sand filtration, microfiltration, ultrafiltration, activated carbon adsorption and reverse osmosis was implemented in sections. It also studied on working principles of each section. Furthermore, comparative study has been made for adsorption performance of coaly granular activated carbon and that of shell activated carbon. The results show that the device can remove effectively simulation agent in water and the effluent quality complies with requirements of relevant standards.

Test Study on Combined Process of Clarification-Adsorption-Membrane Separation for Chemical Agent VX Polluted Surface Water Treatment

2013 ◽  
Vol 750-752 ◽  
pp. 1457-1460
Author(s):  
Xiao Jie Wang ◽  
Hong Wei Zhang ◽  
En Feng Chen ◽  
Yun Zhe Ji
Keyword(s):  
Activated Carbon ◽  
Surface Water ◽  
Membrane Separation ◽  
Chemical Agent ◽  
Activated Carbon Adsorption ◽  
Combined Process ◽  
Surface Water Treatment ◽  
Adsorption Performance ◽  
Carbon Adsorption ◽  
Test Study

t developed test devices and carried out test adopting combined process ofclarification-adsorption-membrane separationtargeted at surface water which was polluted by chemical agent VX. Investigation on purification effects of sand filtration, microfiltration, ultrafiltration, activated carbon adsorption and reverse osmosis was implemented in sections. It also researched on working principles of each section. Furthermore, comparative study has been made for adsorption performance of coaly granular activated carbon and that of shell activated carbon. The results show that the combined process can remove effectively simulation agent in water and the outlet quality complies with requirements of relevant standards.

Removal of Naturally Occurring Mycotoxins from an Aqueous Substrate

1987 ◽  
Vol 22 (2) ◽  
pp. 340-351
Author(s):  
E. Davis ◽  
D.J.L. Forgie
Keyword(s):  
Water Treatment ◽  
Biological Effects ◽  
Growth Conditions ◽  
Activated Carbon Adsorption ◽  
Test Procedures ◽  
Treatment Methods ◽  
Treatment Techniques ◽  
Carbon Adsorption ◽  
Naturally Occurring ◽  
Drinking Waters

Abstract Certain species of fungi, eg. Fusarium, produce mycotoxins, i.e. naturally toxic organic compounds, in response to certain adverse growth conditions. Although the severe effects of ingesting mycotoxin-contaminated grains (eg. corn and wheat) by humans and/or animals are well documented, there are no documented cases of mycotoxin-contaminated drinking waters. However, since natural and man-made mycotoxin production exists, the possibility of mycotoxin contamination of drinking water was deemed to exist. The objective of this investigation was, therefore, to determine which water treatment methods would be successful in the removal of mycotoxins from freshwaters. The experimental test procedures were based on a 50 mg/L stock solution of T-2 mycotoxin in distilled water which was then subjected to various typical water treatment techniques, Samples of the product waters were analyzed qualitatively and quantitatively using both liquid and gas chromatography techniques. In addition, animal bioassay-type testing was employed to evaluate the potential acute and chronic biological effects of the product waters. The results of these tests indicated that the most effective water treatment methods were (i) adsorption on a synthetic resin, (ii) activated carbon adsorption, (iii) distillation, (iv) lime “stabilization” and (v) reverse osmosis. These methods generally resulted in high degrees of mycotoxin removal and product waters which had little or no effect on the test animals. Conventional water treatment techniques, i.e. coagulation, filtration and disinfection, had little or no effect in removing the particular mycotoxin which was tested.

Textile wastewater reuse in northern Italy (COMO)

1999 ◽  
Vol 39 (5) ◽  
pp. 121-128 ◽  
Author(s):  
A. Rozzi ◽  
F. Malpei ◽  
L. Bonomo ◽  
R. Bianchi
Keyword(s):  
Membrane Filtration ◽  
Wastewater Reuse ◽  
Research Programme ◽  
Textile Wastewater ◽  
Advanced Treatment ◽  
Activated Carbon Adsorption ◽  
Economical Analysis ◽  
Carbon Adsorption ◽  
Pilot Plant Scale ◽  
Final Effluent

An extensive research programme has been carried out on advanced treatment of secondary effluents discharged by centralized activated sludge treatment plants fed on mixed textile/domestic effluents in order to produce a final effluent suitable for reuse in the textile factories. Activated carbon adsorption or membrane filtration (ranging from microfiltration to reverse osmosis) have been investigated at pilot plant scale in order to determine the most economical and performing advanced treatment. The increase in concentration of refractory pollutants and of salts discharged in the final effluents because of water recycling within the textile processes have been evaluated by relevant mass balances. A techno-economical analysis on the proposed treatment is also presented.

Selection of the Most Appropriate Leachate Treatment Methods: Part 2: A Review of Recirculation, Irrigation and Potential Physical-chemical Treatment Methods

1988 ◽  
Vol 23 (2) ◽  
pp. 329-340 ◽  
Author(s):  
D.J.L. Forgie
Keyword(s):  
Chemical Treatment ◽  
Membrane Separation ◽  
High Strength ◽  
Chemical Precipitation ◽  
Activated Carbon Adsorption ◽  
Leachate Treatment ◽  
Treatment Methods ◽  
Carbon Adsorption ◽  
Physical Chemical ◽  
Leachate Management

Abstract This paper reviews potential leachate treatment methods that are non-biological from the traditional wastewater treatment viewpoint. The use and role of recirculation and irrigation in leachate management are reviewed. It is shown that, although recirculation cannot be used as a means of final leachate disposal, it does have a role in decreasing the strength of high strength, acidic phase leachates. Irrigation is shown to be a potential means of final disposal of treated leachate. Physical-chemical treatment (PCT) of leachate using chemical precipitation, coagulation and/or oxidation, activated carbon adsorption, air-stripping, pH adjustment, ion exchange and membrane separation are reviewed. It is shown that PCT is appropriate for leachate treatment when the leachate is low in volatile, degradable organics, i.e. the BOD5/COD ratio is less than 0.1, and/or the molecular weight of most of the organics is greater than 500 g/mole. As a result, it is shown that PCT is best used as a polishing step following biological treatment or treating a leachate from a mature landfill.

Advanced treatment of benzothiazole contaminated waters: comparison of O3, AC, and O3/AC processes

2005 ◽  
Vol 52 (10-11) ◽  
pp. 281-288 ◽  
Author(s):  
H. Valdés ◽  
C.A. Zaror
Keyword(s):  
Activated Carbon ◽  
Flow Reactor ◽  
Removal Rate ◽  
Carbon Surface ◽  
Advanced Treatment ◽  
Radical Scavenger ◽  
Activated Carbon Adsorption ◽  
Simultaneous Treatment ◽  
Ozone Oxidation ◽  
Carbon Adsorption

Benzothiazole (BT) is a toxic and poorly biodegradable contaminant, usually found in wastewater from rubber related applications. This compound could be effectively eliminated using advanced treatment processes. This paper compares experimental results on detoxification systems based on ozone oxidation, activated carbon adsorption, and simultaneous adsorption-oxidation using ozone in the presence of activated carbon. The effect of pH (2–11), and the presence of radical scavengers (tert-butyl alcohol and sodium carbonate) on process rates and removal efficiencies are assessed at laboratory scale. The experimental system consisted of a 1L differential circular flow reactor and an ozone generator rated at 5g O3/h. Results show that ozone oxidation combined with activated carbon adsorption increases the overall BT oxidation rate with respect to the ozonation process and activated carbon adsorption. In the presence of free radical scavenger, only a 44% reduction in BT removal rate is observed in the simultaneous treatment, as compared with 72% when ozonation treatment is used, suggesting that BT oxidation reactions mainly take place on the activated carbon surface.

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