Study on Decolorization for Dye Wastewater by Adsorption - Microwave Degradation Activated Carbon from Bean Dregs

2012 ◽  
Vol 581-582 ◽  
pp. 214-218 ◽  
Author(s):  
Yong Hong Shui ◽  
Hong Yan Song ◽  
Xi Ling Feng ◽  
Qiao Qiao Li ◽  
Yue Jiang
Keyword(s):  
Activated Carbon ◽  
Microwave Radiation ◽  
Treatment Process ◽  
Ph Value ◽  
Dye Wastewater ◽  
Dyeing Wastewater ◽  
Wastewater Treatment Process ◽  
Decolorization Rate ◽  
First Time ◽  
Bean Dregs

In order to improve the decolorization of dyeing wastewater, reduce the resources and energy consumption of the wastewater treatment process, Activated carbon from bean dregs (ACBD) was prepared the first time. The decolorizing effects of Methylene Blue on the activated carbon-microwave degradation were discussed. The decolorizing rate of dye-wastewaters respect on adsorbent time(t), adsorbent dosage(m) and pH value were investigated. And the conventional treatment results were compared. The results showed that microwave radiation could accelerate the adsorption of dye on carbon. Improve the decolorization rate and reduce the bleaching time. The decolorization rate reach to 98% after 10 seconds with 1.67g/L ACBD at pH=5.66 when 60mL for the 250mg/L dye wastewater. Compared with usual adsorption, conventional methods take 90min to reach the bleaching effect of microwave radiation just 10s under differently the quantity of ACBD. The decolorization time reduces greatly by microwave degradation.

scholarly journals Particle Size Distribution Based Occurrence Features of Organic Components in Printing and Dyeing Wastewater Under a Treatment Process

2019 ◽  
Vol 118 ◽  
pp. 04009
Author(s):  
Yuan Li ◽  
Jie Liu ◽  
Yibiao Yu ◽  
Hao Zhu ◽  
Zheng Shen ◽  
...  
Keyword(s):  
Particle Size ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Reverse Osmosis ◽  
Treatment Process ◽  
Dyeing Wastewater ◽  
Wastewater Treatment Process ◽  
Printing And Dyeing Wastewater ◽  
Sedimentation Tank ◽  
The Relationship

A more detailed occurrence features of organic matters in the printing and dyeing wastewater, based on its particle size distribution (PSD) and along with a wastewater treatment process, was conducted to provide a support for advanced treatment. Results suggested that, (1) In the dyeing wastewater, the occurrence characteristic of COD was: soluble>supra colloidal>colloidal>settleable; However, for protein, the supra colloidal was dominant, followed by the soluble. The feature of the polysaccharide was consistent with COD’s. In the wastewater, 29.66% of COD could be attributed to proteins and 3.45% of the COD could be attributed to polysaccharides. (2) The relationship among the forms of COD in the primary sedimentation tank, aerobic tank, secondary sedimentation tank, and reverse osmosis-treated concentrated effluent was consistent, that was: soluble>colloidal>supra colloidal>settleable. (3) In the primary sedimentation tank, the settleable COD was almost completely removed; In the aerobic tank, the residual super colloidal COD was not much; After MBR-RO treatment, the COD in the reverse osmosis concentrated water was almost dissolved and only a little presented in other forms.

Effect of Catalytic Material in Environment Pollution Treatment

2010 ◽  
Vol 156-157 ◽  
pp. 1323-1326
Author(s):  
Li Nan Zhu ◽  
Yong Jun Wang ◽  
Lin Zhang
Keyword(s):  
Methylene Blue ◽  
Treatment Process ◽  
Removal Rate ◽  
Dye Wastewater ◽  
Environment Pollution ◽  
Solution Ph ◽  
Wastewater Treatment Process ◽  
Catalytic Material ◽  
Pollution Treatment ◽  
High Voltage Discharge

Some catalytic materials can be utilized in environment pollution treatment. The material of ceramisite can be used in dye wastewater treatment process with its good properties. When they were filled in the high voltage discharge reactor, the ceramsite pellets were polarized, and partial discharge could take place beside every pellet, which would promote methylene blue degeneration in the dye wastewater. And when the solution pH>ceramsite pHzpc, the ceramsite surface presented the electronegativity and the ceramsite could adsorb more methylene blue, and removal rate increased.

Acid Light Yellow Removal from Wastewater Using Peanut Shell-Based Activated Carbon

2013 ◽  
Vol 864-867 ◽  
pp. 1694-1698 ◽  
Author(s):  
Lin Zhi Zhai ◽  
Gang Li
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Dye Removal ◽  
Ph Value ◽  
Peanut Shell ◽  
Dye Wastewater ◽  
Optimum Conditions ◽  
Activation Time ◽  
Activation Temperature ◽  
Light Yellow

Peanut shell-based activated carbon was prepared by 60% zinc chloride activation. The activation temperature was 923K and activation time was 90min. The activated carbon was applied on the removal of acid light yellow from wastewater. The effects of the amount of adsorbent, the initial dye concentration and pH value of solution were investigated. The results showed that the optimum conditions for dye removal: activated carbon dosage of 2.5g/L, initial dye concentration of 50mg/L, pH value of 3. The color removal efficiency attained above 95%. It is concluded that activated carbon developed from peanut shell could be effective and practical for utilizing in dye wastewater treatment.

Study on Treatment of Dye Wastewater by UASB-Biological Contact Oxidation Process

2012 ◽  
Vol 627 ◽  
pp. 390-393 ◽  
Author(s):  
Ji Gang Yuan ◽  
Bi Rong Wang ◽  
Cheng Duan Wang
Keyword(s):  
Stainless Steel ◽  
Treatment Process ◽  
Oxidation Process ◽  
Dye Wastewater ◽  
Volume Loading ◽  
Wastewater Treatment Process ◽  
Oxidation Pond ◽  
Contact Oxidation ◽  
Oxidation Reactor ◽  
Biological Contact Oxidation

A continuously fed stainless steel anaerobic UASB and biological contact oxidation reactor were used in sequence for the experimentation. Dye wastewater which initial COD was 2850mg/L, the COD remove ratio reached to 72% by UASB, COD remove ratio reached to 99% by Biological Contact Oxidation pond. NV (Volume loading) of UASB reached to 1.83 kg COD/ (m3•d), NV of Biological Contact Oxidation pond reached to 1.12 kg COD/ (m3•d). Considering the development of UASB and biological contact oxidation，a dye wastewater treatment process was proposed.

Study on the treatment of simulated azo dye wastewater by a novel micro-electrolysis filler

2019 ◽  
Vol 79 (12) ◽  
pp. 2279-2288 ◽  
Author(s):  
Zhen-Zhu Sun ◽  
Zhong-Hai Liu ◽  
Le Han ◽  
Dong-Ling Qin ◽  
Gang Yang ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Methyl Orange ◽  
Degradation Rate ◽  
Ph Value ◽  
Aeration Rate ◽  
Layer By Layer ◽  
Dye Wastewater ◽  
Operational Parameters ◽  
Initial Ph ◽  
New Type

Abstract A new type of iron-copper-carbon (Fe-Cu-C) ternary micro-electrolysis filler was prepared with a certain proportion of iron powder, activated carbon, bentonite, copper powder, etc. The effect of the new type of micro-electrolysis filler on the simulated methyl orange dye wastewater was studied. The effects of various operational parameters, such as reaction time, initial pH value, aeration rate, filler dose and reaction temperature, on the degradation rate of methyl orange were studied to determine the optimum treatment conditions, and the micro-electrolysis filler was characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The experimental results show that the degradation rate of 220 mL of simulated dye wastewater with a concentration of 100 mg/L reached 93.41% ± 2.94% after 60 mL/min of aeration, with an initial pH = 2, a dose of 45 g and 125 minutes of reaction at room temperature. The new micro-electrolysis filler has a high degradation rate for methyl orange solution, which is attributed to the iron and activated carbon particles sintered into an integrated structure, which makes the iron and carbon difficult to separate and affects the galvanic cell reaction. The addition of copper also greatly increases the transmission efficiency of electrons, which promotes the reaction. In addition, the surface iron is consumed, the adjacent carbon is stripped layer by layer, and the new micro-electrolytic filler does not easily passivate and agglomerate during its use.

Influences of pH, temperature and activated carbon properties on the interaction ozone/activated carbon for a wastewater treatment process

Desalination ◽  
2010 ◽  
Vol 254 (1-3) ◽  
pp. 12-16 ◽  
Author(s):  
Hakim Dehouli ◽  
Olivier Chedeville ◽  
Benoît Cagnon ◽  
Vincent Caqueret ◽  
Catherine Porte
Keyword(s):  
Wastewater Treatment ◽  
Activated Carbon ◽  
Treatment Process ◽  
Wastewater Treatment Process

scholarly journals Real-Time Implementation for Secure Monitoring of Wastewater Treatment Plants using Internet of Things

2019 ◽  
Vol 9 (1) ◽  
pp. 2997-3002
Keyword(s):  
Wastewater Treatment ◽  
Dissolved Oxygen ◽  
Embedded System ◽  
Treatment Process ◽  
Ph Value ◽  
Wastewater Treatment Process ◽  
Water Utility ◽  
Utility Systems ◽  
Quality Water ◽  
Secure Monitoring

The scarcity and demand of water increases rapidly. The varieties of wastewater treatment techniques are adopted to produce the quality water and recycling. Wastewater treatment is the process of removing the contaminants present and to produce it suitable for reuse as well as to save the environment. Water utility systems are susceptible to a variety of natural, infrastructure and man-made hazards. These threats result in contaminating the drinking water and affect the human health as well as environment. It is essential to ensure the smooth functioning of wastewater treatment process and to protect the water utility systems from security attacks. This proposed work is the real-time implementation of embedded system for secure monitoring of wastewater treatment process through the internet. The measure of Dissolved Oxygen (DO) content present in water is essential for marine organisms and fish to breathe. The measure of pH value indicates that the amount of chemicals dissolved in the water and whether organisms are affected by them. The High value of acidity can be deadly to fish and other marine organisms. In this proposed work, the presence of DO content and pH value is detected and sent to the embedded system. The content of dissolved oxygen and pH value is encrypted using embedded system and transmitted across wireless networks. The cipher text is decrypted at the receiver using embedded system. It protects the water security system from unauthorized access and modification of process parameters. It ensures good quality water produced and protects the environment as well as public health.

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