scholarly journals Effect of electrode configuration and voltage variations on electrocoagulation process in phosphate removal of laundry wastewater

2021 ◽  
Vol 896 (1) ◽  
pp. 012025
Author(s):  
B P Samadikun ◽  
W Oktiawan ◽  
Junaidi ◽  
A K Rais ◽  
T A Taqiyya ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Phosphate Concentration ◽  
Phosphate Removal ◽  
Electrode Configuration ◽  
Optimum Result ◽  
Electrocoagulation Process ◽  
The Government ◽  
Electrode Plate

Abstract Indonesia is one of the countries that still have to deal with waste problems. In reducing waste, the government has made a series of efforts to reduce waste, especially wastewater. There are many kinds of wastewater. One of them is laundry wastewater. This research aims to estimate the dangerous substance in laundry wastewater and how to treat it. The method using some variables like Al-Al, Al-Fe, Fe-Fe, and Fe-Al and the voltage is changing from 20 V, 30 V, 40 V, and 60 V. The research shows that the most optimum result of laundry wastewater treatment was using Al-Fe electrode plate 60 V. The result that the phosphate concentration decreased by 6.56 mg/l from 9.58 mg/l to 3.01 mg/l and obtained phosphate removal efficiency of 68.56%. The most optimum results for the removal of phosphate levels contained in the 60 V voltage.

The Aeration Time Influence on the Brewery Wastewater Treatment in SBR

2011 ◽  
Vol 183-185 ◽  
pp. 1200-1203
Author(s):  
Jun Sheng Li ◽  
Zhi Wei Zhao ◽  
Jin Long Zuo
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Removal Rate ◽  
Phosphate Removal ◽  
Experimental Result ◽  
Brewery Wastewater ◽  
Aeration Time

The effect s of aeration time on the treatment of brewery wastewater in SBR reactor were investigated by using synthetic brewery wastewater. The experimental result indicates that under the condition of influent COD is 300～650mg/L, the temperature is 25°C, continual aerations is 2.5 h and sludge density is 2000～3000 mg/L, the reactor has a good degeneration ability of COD and NH4+-N in simulation brewery wastewater，removal rate can reached 90 % or more，phosphate removal efficiency was above 70%. so the SBR technology is feasible．

scholarly journals Optimization of electrocoagulation process parameters for enhancing phosphate removal in a biofilm-electrocoagulation system

2021 ◽  
Author(s):  
Jie Zeng ◽  
Min Ji ◽  
Yingxin Zhao ◽  
Pedersen ◽  
Thomas Helmer ◽  
...  
Keyword(s):  
Reaction Time ◽  
Removal Efficiency ◽  
Operating Cost ◽  
Integrated System ◽  
Phosphate Removal ◽  
Electrode Distance ◽  
Electrocoagulation Process ◽  
Biofilm Process ◽  
Switching Mode ◽  
The Individual

Abstract This study aimed to enhance the removal of phosphate in synthetic rural sewage by using a continuous electrocoagulation combined with biofilm process in an integrated system. Characteristic indexes of biofilm process effluent covering pH, DO, SS, COD and phosphate maintained a narrow fluctuation range and tended not readily to influence the phosphate removal of subsequent electrocoagulation. Three parameters including inter-electrode distance, current intensity and reaction time were selected to investigate the performance of enhancing phosphate removal. On the strength of single-factor tests, the Box-Behnken design (BBD) coupled with response surface methodology (RSM) was applied to investigate the individual and mutual interaction impacts of the major operating parameters and to optimize conditions. The optimum conditions were found to be inter-electrode distance of 1.8 cm, current density of 2.1 mA/cm2 and EC reaction time of 34 min, and the phosphate removal efficiency was achieved to be 90.24% along with less than 1 mg/L in case of periodic polarity switching mode, which raised removal efficiency by 10.10% and reduced operating cost by 0.13 CNY/g PO4− compared to non-switching mode. The combination of biofilm processing and electrocoagulation treatment was proven a valid and feasible method for enhancing phosphate removal.

Shell Powder for Strengthening Phosphate Removal Efficiency in Wastewater Treatment

2013 ◽  
Vol 781-784 ◽  
pp. 2138-2141
Author(s):  
Hong Jie Sun ◽  
Shao Hua Yang ◽  
Yu Bo Cui
Keyword(s):  
Wastewater Treatment ◽  
Removal Efficiency ◽  
Natural Water ◽  
Irrigation Water ◽  
Phosphorus Removal ◽  
Sewage Treatment ◽  
Treatment Plant ◽  
Phosphate Removal ◽  
Phosphorus Concentration ◽  
Shell Powder

Phosphorus removal from wastewater has always been given serious attention in sewage treatment. Eutrophication can happen if phosphorus wastewater is directly discharged into natural water and high phosphorus-contained irrigation water may lead crops beat down. The research investigated the phosphorus removal efficiency in wastewater by shell powder. The experiment results showed that the best removal effect could meet the Wastewater Treatment Plant Discharge Standard (GB18918-2002) Grade I-A in China, which can be achieved under the conditions of the dosage of shell powder solution 1 ml, pH > 11 and precipitation one to four hours at the initial phosphorus concentration of about 3 mg/L.

Removal of Phosphate from Aqueous Solution by Using Red Mud

2011 ◽  
Vol 291-294 ◽  
pp. 1804-1807 ◽  
Author(s):  
Xin Feng Zhu ◽  
Hong Ye Liu ◽  
Peng Hui Shi ◽  
Jun Feng Wu ◽  
Yi Fei Guo
Keyword(s):  
Aqueous Solution ◽  
Reaction Time ◽  
Removal Efficiency ◽  
Red Mud ◽  
Phosphate Concentration ◽  
Phosphate Removal ◽  
Batch Experiments ◽  
Reaction Conditions ◽  
Optimal Reaction

Red mud has been used to develop effective adsorbents to remove phosphate from aqueous solution. The effects of different dosage, pH of solution and reaction time on adsorption have been examined in batch experiments. It was found that red mud samples show higher removal efficiency for phosphate. The results showed that phosphate removal efficiency was found to be 97 % with optimal reaction conditions initial phosphate concentration 100mg L−1, red mud dosage 10g L−1, pH 2.0, respectively. The phosphate removal efficiency of the red mud adsorbents decreases with increase of pH.

scholarly journals Removal of Low Concentration Phosphate in Phosphogypsum Leachate

2019 ◽  
Vol 136 ◽  
pp. 06018
Author(s):  
Zhixiang Liu ◽  
Juan Feng ◽  
Chendi Min ◽  
Lei Gan ◽  
Ying Shi
Keyword(s):  
Removal Efficiency ◽  
Quartz Sand ◽  
Phosphate Concentration ◽  
Phosphate Removal ◽  
Adsorption Time ◽  
Adsorbent Dosage ◽  
Low Concentration ◽  
Optimum Dosage

In order to find a method for removing low-concentration phosphate from phosphogypsum leachate, modified quartz sand was used as adsorbent. The effects of adsorbent dosage, phosphate concentration and adsorption time on phosphate removal efficiency were investigated. The results show that the optimum dosage of modified quartz sand was 0.024g/mL. The effluent phosphate concentration was lower than 0.023g/mL, and the phosphate removal efficiency could reach up to 98%.

Removal of Phosphate Anions from Aqueous Solutions Using Dolomite as Adsorbent

2013 ◽  
Vol 864-867 ◽  
pp. 1454-1457 ◽  
Author(s):  
Xiao Li Yuan ◽  
Wen Tang Xia ◽  
Juan An ◽  
Wen Qiang Yang ◽  
Jian Guo Yin
Keyword(s):  
Particle Size ◽  
Reaction Time ◽  
Removal Efficiency ◽  
Solid Material ◽  
Phosphate Concentration ◽  
Phosphate Removal ◽  
Adsorbent Dosage ◽  
Initial Ph ◽  
Phosphate Anions ◽  
Second Category

Dolomite, an industrial solid material was used as an adsorbent to remove phosphate anions from wastewater. The effects of initial pH, initial phosphate concentration, reaction time, reaction temperature and adsorbent dosage on the phosphate removal efficiency were investigated. The results show that the phosphate removal efficiency exceed 99% under the conditions of pH 9.5, temperature 30 °C, reaction time 50 min, particle size <0.074 mm, initial phosphate concentration 50 mg•L-1, adsorbent dosage 10g•L-1 and stirring speed 250 r/min. After phosphate removal reaction, the residual phosphate concentrations completely meet the requirement of national discharge standards of the second category pollution (GB 1A (TP = 0.5 mgL-1)).

scholarly journals Enhanced removal of phosphate from wastewater by precipitation coupled with flocculation

2021 ◽  
pp. 5-10
Author(s):  
Ho Hong Quyen Ho
Keyword(s):  
Removal Efficiency ◽  
Filter Paper ◽  
Alginic Acid ◽  
Weight Ratio ◽  
Phosphate Concentration ◽  
Phosphate Removal ◽  
Synthetic Wastewater ◽  
Phosphate Solution

Eco-friendly flocculants of alginic acid, NaHCO3 and CaCl2.2H2O with advantages of strong gelation characteristics were prepared for supporting the removal of phosphate in synthetic wastewater using CaO and Ca(OH)2 as precipitants. The effects of weight ratios of each component in flocculants, dosage of flocculants and initial phosphate concentration were investigated through batch of experiments. The results showed excellent flocculation performance with the weight ratio of alginic acid:NaHCO3 and CaCl2.2H2O at 1:0.3:0.02 and the dosage of flocculants at 0.0050 g/25 mL of phosphate solution in the range of initial phosphate concentration from 50 to 1000 ppm. Comparing to the sample without flocculants, the phosphate removal efficiency using CaO and Ca(OH)2 with the addition of flocculants increased from 19 and 20% to 97% at the initial phosphate concentration of 50 ppm, respectively by filtration of filter paper 2.7 μm.

REVIEWS OF ELECTROCOAGULATION PROCESS ON WASTE WATER TREATMENT TECHNOLOGY

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Taty Hernaningsih
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Removal Efficiency ◽  
Industrial Waste ◽  
Waste Water Treatment ◽  
Treatment Technique ◽  
Industrial Waste Water ◽  
Strong Current ◽  
Current Voltage ◽  
Electrocoagulation Process

Waste water treatment by industry usually uses chemicals that may lead to additional environmental pollution load. On the other hand, water demand increases and environmental regulations regarding waste water disposal requirements that apply more stringent. It is necessary for waste treatment technique that accommodate this requirement. Electrocoagulation process is a technique of wastewater treatment that has been chosen because the technique is environmentally friendly. This paper will review some of the research or application electrocoagulation process which is conducted on industrial waste water. Types of industrial waste water that is to be reviewed include: industries batik, sarongs, textiles, palm oil, slaughterhouses, food, leather tanning, laundry, pulp and paper. Overview reviewed in this research include the waste water treatment process in several processing variations such as: change in time, electricity and kind of electrodes. The results of the research with electrocoagulation process in the industry are the removal efficiency of TSS, COD, BOD5, Chrome, phosphate, surfactants, color turbidity influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. The results of the study with electrocoagulation process in the industry is the removal efficiency of TSS, COD, BOD5, chromium, phosphate, surfactant, turbidity color that are influenced by several factors including time, strong current, voltage, distance and type of electrode and pH. It is hoped the information presented in this article can be a reference for similar research for the improvement of research on the process ektrokoagulasi.Key words: elektrocoagulation, removal eficiency, environmental friendly

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