Influence of Influent pH on Ceramic Printing Wastewater Treatment

2012 ◽  
Vol 260-261 ◽  
pp. 1074-1078 ◽  
Author(s):  
Yong Li Zhang ◽  
Zhi Zhen Huang ◽  
Man Man Zhou
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Water Samples ◽  
Suspended Solids ◽  
Ph Value ◽  
Turbidity Removal ◽  
Suspended Substance ◽  
Value Of Water ◽  
Wastewater Samples ◽  
Solids Removal

Investigated the influence of absorbency, turbidity and suspended substance in printing wastewater treatment by regulating the pH value of water treatment. Firstly, was acidified the wastewater samples to 5, 4, 3, 2, then alkalize them to 8、9、10、11、12. Calculated decolorization removal, turbidity removal and the suspended substance removal. The results show that, the decolorization removal and the turbidity removal were low after acidification. While after alkalized treatment the decolorization removal and the turbidity removal were all rise. The decolorization removal and turbidity removal increased following with the increase of pH of samples that first acidified and then alkalized. And it was the most obvious when the pH was 12. When the wastewater samples first acidized the pH to 4 and then alkalized the pH to 12, the dispose effects was the best. In these conditions, the decolorization removal and turbidity removal could reach 57.7 % and 72.8 %. After acidification, the suspended solids removal came down followed with the rise of pH value. As the water samples in same acidification value and then alkalized, with the increase of pH, the suspended solids removal first rose and then came down. It could get the best dispose effects at the pH 11, the suspended solids removal could reach 41.4 %.

scholarly journals APLIKASI KOAGULAN ALAMI DARI TEPUNG JAGUNG DALAM PENGOLAHAN AIR BERSIH

2013 ◽  
Vol 2 (2) ◽  
Author(s):  
Eka Prihatinningtyas
Keyword(s):  
Water Treatment ◽  
Optimum Condition ◽  
Suspended Solids ◽  
High Efficiency ◽  
Settling Velocity ◽  
Maize Yield ◽  
Active Components ◽  
Turbidity Removal ◽  
Natural Coagulant ◽  
Solids Removal

Maize can be used as natural coagulant in water treatment process.The aim of this research was find the optimum condition on water treatment using natural coagulant from maize. Maize extract made by dissolving 5 grams of maize into 100 ml NaCl. The solution separated by centrifugation. The supernatant named extract of maize. Extract of maize loaded onto column packed with Amberlite and produced ionic maize.The active components are carboxyl, hydroxyl and amides groups. Ionic maize yield better turbidity removal than extract of maize. Coagulation withh high initial turbidity gave high efficiency of turbidity removal than low turbidity. Coagulation process runs efficiently at pH 5 because at that point the isoelectric point was obtained. The flowrate less than 0.03 m/ min, the alum will provide the efficiency of suspended solids removal greater than extract of maize. While the over flowrate higher than 0.03 m / min, settling velocity of kaolin using alum and extract of maize are the same.

scholarly journals Study on Optimization of Tungsten Ore Flotation Wastewater Treatment by Response Surface Method (RSM)

Minerals ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 184
Author(s):  
Liping Zhang ◽  
Xiaofei Jiao ◽  
Shengnian Wu ◽  
Xuejing Song ◽  
Ruihan Yao
Keyword(s):  
Water Glass ◽  
Suspended Solids ◽  
Good Accuracy ◽  
Ph Value ◽  
Quadratic Equation ◽  
Equation Model ◽  
Residual Water ◽  
Turbidity Removal ◽  
Design Expert ◽  
Surface Method

A large amount of collectors, inhibitors and modifiers such as oleic acid, water glass and sodium carbonate are added to the flotation processing of tungsten ore, resulting in the difficulty of the suspended solids (SS) with the residual water glass settling down in the flotation wastewater. The removal efficiency of the suspended solids is low with commonly used reagents like polyaluminium chloride (PAC) and polyacrylamide (PAM). This paper innovatively applied calcium chloride (CaCl2) to treat flotation wastewater and optimized the dosage of CaCl2, PAM and the pH value. The experimental results showed that when the dosage of 595 mg/L CaCl2 was combined with 21 mg/L PAM at pH 12, the turbidity removal ratio could reach 99.98%, and the residual turbidity of the supernatant was 0.23 NTU. The effluent could fully meet the requirements for reuse in industrial, urban miscellaneous and scenic environment water consumption (turbidity < 5 NTU). The quadratic equation model fitted with Design-Expert 8.0.6 software was constructed as Y = 91.52 + 8.68A + 1.11B − 1.02C − 1.7AB + 0.86AC + 0.06BC − 1.56A2 + 2.09B2 − 1.89C2, which had a good accuracy of the predicted responses versus the experimental data.

scholarly journals Use of Aloe vera as an Organic Coagulant for Improving Drinking Water Quality

Water ◽  
2021 ◽  
Vol 13 (15) ◽  
pp. 2024
Author(s):  
Abderrezzaq Benalia ◽  
Kerroum Derbal ◽  
Amel Khalfaoui ◽  
Raouf Bouchareb ◽  
Antonio Panico ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Suspended Solids ◽  
Aluminum Sulfate ◽  
Aloe Vera ◽  
Drinking Water Treatment ◽  
Water Turbidity ◽  
Turbidity Removal ◽  
Maximum Turbidity ◽  
Optimal Ph

The coagulation–flocculation–sedimentation process is widely used for removal of suspended solids and water turbidity reduction. The most common coagulants used to conduct this process are aluminum sulfate and ferric sulfate. In this paper, the use of Aloe vera as a natural-based coagulant for drinking water treatment was tested. The bio-coagulant was used in two different forms: powder as well as liquid; the latter was extracted with distilled water used as a solvent. The obtained results showed that the use of the natural coagulant (Aloe vera) in both powder (AV-Powder) and liquid (AV-H2O) forms reduced the water turbidity at natural pH by 28.23% and 87.84%, respectively. Moreover, it was found that the use of the two previous forms of bio-coagulant for drinking water treatment had no significant influence on the following three parameters: pH, alkalinity, and hardness. The study of the effect of pH on the process performance using Aloe vera as a bio-coagulant demonstrated that the maximum turbidity removal efficiency accounted for 53.53% and 88.23% using AV-Powder and AV-H2O, respectively, at optimal pH 6.

Research on Technology of Wastewater Treatment from Scheelite Flotation

2013 ◽  
Vol 645 ◽  
pp. 121-124 ◽  
Author(s):  
Jing Xin Wang ◽  
Guo Wei He ◽  
Bin Fan ◽  
Jian Qiang Xiao
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Sulfuric Acid ◽  
Theoretical Basis ◽  
Suspended Solids ◽  
High Concentration ◽  
Flotation Process ◽  
Mine Wastewater ◽  
Suspended Substance ◽  
Wastewater Recycling

Wastewater from scheelite flotation tailings slathered a lot of sodium silicate in the flotation process, a large number of silicate minerals residues remain in the wastewater, forming suspension bodies difficult to be naturally subsided. With high concentration of suspended substance and pH of 11 or more, this kind of wastewater belongs to unmanageable mine wastewater. Research shows that, pretreating the waste water with Sulfuric acid and calcium chloride, adjusting pH to 7-8 and adding polyacrylamide on flocculating-sedimentation combined can remove suspended solids effectively, offering theoretical basis for wastewater recycling and disposing mine wastewater, which is of great importance.

scholarly journals Treatment of Al Doura Oil Refinery Wastewater Turbidity using Magnetic Flocculation

2019 ◽  
pp. 1-8
Author(s):  
Muzher Al doury ◽  
Hadeel Al samerrai
Keyword(s):  
Removal Efficiency ◽  
Suspended Solids ◽  
Suspended Solid ◽  
Operating Conditions ◽  
Oil Refinery ◽  
Refinery Wastewater ◽  
Turbidity Removal ◽  
Aluminum Sulphate ◽  
Solids Removal ◽  
Oil Refinery Wastewater

The use of conventional flocculants such as Aluminum sulphate (Alum) alone to treat the wastewater may be insufficient to get the required turbidity, suspended solids removal as well as it requires relatively a long residence time. Magnetic flocculation is one of the used techniques for increase the efficiency of the turbidity removal. In the present study, three sets of experiments are carried out in order to investigate the possibility of increasing the suspended solid removal efficiency from Al Doura oil refinery wastewater using iron oxide (Fe3O4), Nickel (Ni), and Cobalt (Co) ferromagnetic powders with alum. The following operating conditions namely, pH, alum dose, ferromagnetic powder dose, and initial turbidity are studied. The results revealed that an improvement in turbidity removal efficiency is satisfied, as well as, a reasonable reduction in the sedimentation period is achieved. The highest turbidity removal is 99.88% that obtained for 122NTU sample for alum dose 120 mg/L+ Nickel dose of 80mg/L and pH of 6.5.

The use of ozone during advanced primary treatment of wastewater for its reuse in agriculture: an approach to enhance coagulation, disinfection and crop productivities

2008 ◽  
Vol 57 (6) ◽  
pp. 955-962 ◽  
Author(s):  
A. E. Campos-Reales-Pineda ◽  
M. T. Orta de Velásquez ◽  
M. N. Rojas-Valencia
Keyword(s):  
Suspended Solids ◽  
Settling Velocity ◽  
Total Suspended Solids ◽  
Primary Treatment ◽  
Turbidity Removal ◽  
Helminth Eggs ◽  
Ozone Dose ◽  
Reduced Toxicity ◽  
Solids Removal ◽  
Plant Germination

The purpose of this work was to evaluate the effect that ozone (O3) has on the advanced primary treatment (APT) and disinfection of wastewaters for their reuse in agriculture. The enhancement and optimization of APT was done by applying low O3 doses during coagulation. By applying an ozone dose of 2 mg/L during APT, the required coagulant dose may be reduced by up to 25% to achieve a similar turbidity removal (and up to 50% for total suspended solids removal), when compared to a conventional APT treatment. When the same coagulant dose was applied (60 mg/L), the volume of settleable solids was reduced from 31.0 to 25.5 mL/L, and the settling velocity increased from 0.111 to 0.139 m/min. Disinfection was also improved by the use of ozone, which leads to better plant germination rates than when using chlorination, because of reduced toxicity of the ozonated effluents. Additionally, helminth eggs content was reduced by applying ozone.

scholarly journals Sewage Flow Conditions in a Hydroponic Lagoon in Terms of Quality of Treated Wastewater

2021 ◽  
Vol 232 (7) ◽  
Author(s):  
K. Marek ◽  
K. Pawęska ◽  
A. Bawiec ◽  
J. Baran
Keyword(s):  
Wastewater Treatment ◽  
Cross Sections ◽  
Suspended Solids ◽  
Municipal Wastewater ◽  
Pollutant Removal ◽  
Treated Wastewater ◽  
Municipal Wastewater Treatment ◽  
Flow Conditions ◽  
Wastewater Samples ◽  
The Impact

AbstractThe aim of this study was to analyse the impact of velocity in the hydroponic lagoon used as the 3rd stage of municipal wastewater treatment on washing out of the particles suspended in the sewage as well as settled on the bottom of the hydroponic ditch. In order to analyse the flow velocity in the lagoon, 12 cross-sections were determined at points where the speed and motion of particles can change. Wastewater samples were taken in the summer month from each of the 12 sampling points (the depth of 0.1 m) and the basic physicochemical parameters of sewage were determined (BOD5, COD, TOC, TSS, turbidity). In selected cross-sections, a granulometric analysis of particles was made to determine the characteristics of suspended solids in the wastewater flow path. Based on the analysis, it was found that velocities in the lagoon during aeration can be ten times higher (0.070 m·s−1) than those assumed by designers (0.006 m·s−1). Such a large difference means that the sedimentation conditions assumed in the project cannot be met, which may result in an increase in the total suspended solids and organic matter concentrations at the outflow to the receiving water body. During the flow through the hydroponic ditch, the highest efficiency of pollutant removal was indicated for BOD5 — 88.7% and TSS — 80%, while the COD removal occurred with the lowest efficiency — 34.1%. Improving flow conditions as designed in the hydroponic lagoon technological project may increase the efficiency of wastewater treatment at the third stage of treatment.

Micro-Flocculation - Film Processing Technology in Dealing with Beer Sterilized Wastewater

2013 ◽  
Vol 699 ◽  
pp. 279-283
Author(s):  
Jin Xiang Fu ◽  
Hui Liu ◽  
Rong Xin Zhang
Keyword(s):  
Wastewater Treatment ◽  
Water Treatment ◽  
Heat Load ◽  
Treatment Process ◽  
Removal Rate ◽  
Turbidity Removal ◽  
Craft Beer ◽  
Treatment Processes ◽  
Membrane Treatment ◽  
Sterilization Effect

In order to improve beer sterilization effect of wastewater treatment, reduce the heat load of the sterilization wastewater on subsequent water treatment processes. In this paper, through optimizing transformation developed micro-flocculation -membrane treatment processes. Screening for the identification of inorganic polymeric aluminum ferric chloride flocculants as the technology. The best dosage was 15mg / L, the field test to verify the craft beer sterilized wastewater treatment effect. The results show that, micro flocculation membrane treatment process in the water after treatment of COD and turbidity removal rate is respectively 76% and 98%. To illustrate the use of this technology in the treatment of beer sterilizing water without two stage filtration, can effectively recycling sterilized wastewater.

scholarly journals Changes in Particle Size Distribution in Hydroponic Lagoons Working as A Third Stage of Wastewater Treatment

2020 ◽  
Author(s):  
Aleksandra Bawiec ◽  
Katarzyna Pawęska ◽  
Krzysztof Pulikowski ◽  
Kinga Marek
Keyword(s):  
Particle Size ◽  
Wastewater Treatment ◽  
Particle Size Distribution ◽  
Size Distribution ◽  
Developed Surface ◽  
Third Stage ◽  
Summer Half ◽  
Wastewater Samples ◽  
Solids Removal ◽  
The Impact

Abstract The aim of research was to evaluate changes in the particle size distribution in two hydroponic lagoons working as a third stage of wastewater treatment where purification processes are based on plants and algae activity. Wastewater samples were taken during the winter and summer half of the year. In the samples taken from analyzed hydroponic lagoons the range of particles size was very wide (0.01 – 1000.0 μm). In both of the research facilities, the fractal dimension (Df) of particles was close to 2.0 what decides about developed surface of the particles. The results may indicate the predominance of algae cells in the total amount of suspensions. This information may pay a key role in determination the impact of discharged particles on the receiving water bodies quality as well as can be the main factor that allows to improve the system of suspended solids removal.

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