scholarly journals Treatment of dinitrodiazophenol industrial wastewater in heat-activated persulfate system

RSC Advances ◽  
2018 ◽  
Vol 8 (37) ◽  
pp. 20603-20611 ◽  
Author(s):  
Le-lan Wei ◽  
Wei-ming Chen ◽  
Qi-bin Li ◽  
Zhe-pei Gu ◽  
Ai-ping Zhang
Keyword(s):  
Organic Pollutants ◽  
Industrial Wastewater ◽  
Orthogonal Test ◽  
System Parameters ◽  
System P ◽  
Activated Persulfate

Organic pollutants of DDNP wastewater could be rapidly degraded in heat-activated PS system. Parameters of the treatment were optimized by a mixed orthogonal test. Mechanisms of DDNP degradation in this system were investigated.

Pretreatment of wastewater containing a mixture of organic pollutants obtained from a CC2 plant by coagulation

2008 ◽  
Vol 58 (5) ◽  
pp. 1071-1077
Author(s):  
Bidhan C. Bag ◽  
Makireddi Sai ◽  
Mahavir P. Kaushik ◽  
Krishnamurthy Sekhar ◽  
Chiranjib Bahttacharya
Keyword(s):  
Acetic Acid ◽  
Organic Pollutants ◽  
Aromatic Compounds ◽  
Carboxymethyl Cellulose ◽  
Industrial Wastewater ◽  
Suspended Solids ◽  
Oxygen Demand ◽  
Total Suspended Solids ◽  
Manufacturing Plant ◽  
Colloidal Materials

Coagulation is one of the most important physicochemical treatment steps in industrial wastewater to reduce the suspended and colloidal materials responsible for colour and turbidity of the wastewater. The manufacturing plant of N,N′-Dichloro bis (2,4,6-trichlorophenyl) urea (CC2) produces wastewater containing pyridine, acetic acid and diphenyl urea (DPU). The wastewater also contains lot of suspended solids like CC2 and various poly-aromatic compounds. In our present investigation, our basic aim was to find an effective coagulation process for the pretreatment of wastewater discharged from the CC2 plant. Studies were conducted to find out a suitable and effective coagulant for pretreatment of this wastewater. Various coagulating agents such as alum, ferric chloride, sodium carboxymethyl cellulose (Na-CMC) were used. Alum was found to be the most effective coagulant. Coagulation of the wastewater resulted in the total suspended solids (TSS) removal in the range of 92–94% and chemical oxygen demand (COD) removal in the range of 59 to 65% at a dose of 500 mg L−1 of alum at a pH ≥ 7.0. After coagulation the concentration of pyridine in wastewater was found to be reduced by 10.0% and that of DPU 40–45% with a dosage of 500 mg L−1 alum.

Advances in Preparation of Activated Carbon from Sugarcane Bagasse and Using it to Treatment of Wastewater Research

2014 ◽  
Vol 1010-1012 ◽  
pp. 15-19
Author(s):  
Yan Min Qin ◽  
Mei Na Liang ◽  
Dun Qiu Wang
Keyword(s):  
Heavy Metals ◽  
Activated Carbon ◽  
Organic Pollutants ◽  
Sugarcane Bagasse ◽  
Industrial Wastewater ◽  
Research Progress ◽  
Future Research ◽  
Preparation Methods ◽  
Existing Problems

This paper discusses the utilization situation and existing problems of sugarcane bagasse, and briefly the research progress of preparation of activated carbon from sugarcane bagasse (ACSB). It reviews the application of activated carbon prepared from sugarcane bagasse, such as, industrial wastewater decolorizing, removal of organic pollutants and heavy metals in wastewater in the domestic and overseas in recent years. Points out the shortage of preparation methods, the existing problems and puts forwards some questions need to be solved in future research. Moreover, the prospect of application and the trends in future research of activated carbon from sugarcane bagasse are proposed.

Microbiological Degradation of Organic Pollutants from Industrial Wastewater

2021 ◽  
pp. 83-114
Author(s):  
Ayantika Banerjee ◽  
Moharana Choudhury ◽  
Arghya Chakravorty ◽  
Vimala Raghavan ◽  
Bhabatush Biswas ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Industrial Wastewater
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