Synthesis of Zeolite from Water Treatment Sludge and its Application to the Removal of Brilliant Green

2018 ◽  
Vol 766 ◽  
pp. 111-116
Author(s):  
Khemmakorn Gomonsirisuk ◽  
Kotchakorn Yotyiamkrae ◽  
Malee Prajuabsuk ◽  
Saisamorn Lumlong ◽  
Pharit Kamsri ◽  
...  
Keyword(s):  
Water Treatment ◽  
Brilliant Green ◽  
Low Cost ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Adsorption Efficiency ◽  
Water Treatment Sludge ◽  
Aged Material ◽  
Adsorption Kinetics And Isotherm ◽  
Sem Analyses

In this work, water treatment sludge from the water treatment plant was used to synthesize zeolite material. In the synthesis, the washed sludge was mixed with sodium hydroxide and then heated at 600ºC for 6 h. After agitation, the aged material was heated in a water bath at 80ºC for different period of aging times. Based on XRD and SEM analyses, Faujasite zeolite was obtained. Then, the feasibility of employing the obtained zeolite as adsorbent for Brilliant Green (BG) removal was investigated. The effect of adsorbent dosage and contact time were examined. Adsorption kinetics and isotherm were also evaluated. The results showed that the obtained zeolite has potential for applying as low-cost adsorbent for the removal of BG from wastewater with higher than 97% adsorption efficiency.

scholarly journals Effect of ultrasonic and thermal disintegration of water treatment sludge

2018 ◽  
Vol 44 ◽  
pp. 00045
Author(s):  
Justyna Górka ◽  
MaŁgorzata Cimochowicz-Rybicka ◽  
Beata Fryźlewicz-Kozak
Keyword(s):  
Water Treatment ◽  
Main Parameter ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Treatment Sludge ◽  
Disintegration Process ◽  
Municipal Water ◽  
Ultrasound Intensity ◽  
Sludge Production

This research was conducted to evaluate the effects of thermal and ultrasound disintegration on the disintegration degree (DD) of water treatment sludge from a municipal water treatment plant. A disintegration process was used to (i) improve subsequent coagulation efficiencies and dewatering processes (ii) reduce sludge production, and (iii) obtain both economic and enviromental benefits. The results show that using the disintegration process has an influence on DD values. It is also worth emphasising that the main parameter determining the efficiency of ultrasonic and thermal disintegration was the time of the applied process. Other parameters such as ultrasound intensity and temperature had a reduced impact on DD values.

scholarly journals Evaluating adsorbent properties of drinking water treatment plant sludge-based carbons activated by K2CO3/CH3COOH: a low-cost material for metal ion remediation

2019 ◽  
Vol 1 (7) ◽  
Author(s):  
Carlos Magno Marques Cardoso ◽  
Danilo Gualberto Zavarize ◽  
Paulo de Assis Lago ◽  
Marcelo Mendes Pedroza ◽  
Sarah Silva Brum ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Treatment ◽  
Metal Ion ◽  
Low Cost ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Drinking Water Treatment Plant ◽  
Water Treatment Plant Sludge

scholarly journals Vertical Upgrading of Existing Water Treatment Plants by using Air Flotation Technique

2019 ◽  
Vol 9 (2) ◽  
pp. 3671-3680
Keyword(s):  
Water Treatment ◽  
Low Cost ◽  
New Technology ◽  
Treatment Plant ◽  
Treatment Phase ◽  
Water Treatment Plant ◽  
High Rate ◽  
Lower Efficiency ◽  
Water Treatment Plants ◽  
Rate Of Increase

Due to the rate increase for potable water need, the general market trend is the vertical expansions for water treatment plants instead of the horizontal ones. By upgrading the existing plants using new technology to reach the maximum capacity and conserve the water quality parameters as the Egyptian Code states. The most benefits of plant upgrading are no new land is needed also, low cost solution, as we could upgrade the WTP as mentioned before without adding major civil works comparing with the construction of new water treatment. This study aims to upgrade the existing water treatment plants using dissolved air floatation system, in order to reach the maximum possible capacity using several possible scenarios without adding major civil works. The study shows that, the scenario which involves DAF technology then sedimentation and filtration has the best removal efficiency because it has three treatment phases. The use of one treatment phase from floatation or sedimentation followed by filtration achieved lower efficiency. At last direct filtration, considering low removal efficiencies due to the high rate of filtration which allowed the suspended solids to escape.For the application upon Al Ameriyah water treatment plant, the first proposal which involves five combined tanks, two tube settler and one filter tank is the most convenient proposal to be achieved. Since it has quiet high value 72 points in the technical evaluation with the least estimated cost 85,769,200 LE. The use of DAF technology combined with sedimentation gives the chance to increase the existing plant capacity from 520000 m3 /day to 864815 m3 /day with rate of increase equals 66.31% which is a cheap and happy solution.

PROPERTIES AND PERFORMANCE OF WATER TREATMENT SLUDGE (WTS)-CLAY BRICKS

2015 ◽  
Vol 77 (32) ◽  
Author(s):  
Mohd Asri Md Nor ◽  
Alia Syafiqah Abdul Hamed ◽  
Faisal Hj Ali ◽  
Ong Keat Khim
Keyword(s):  
Compressive Strength ◽  
Water Treatment ◽  
Water Absorption ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Water Treatment Sludge ◽  
X Ray ◽  
Clay Bricks ◽  
Firing Shrinkage ◽  
And Performance

Every year, large quantity of water treatment sludge (WTS) is produced from water treatment plant in Malaysia. Sanitary landfill disposal of sludge at authorized sites is the common practice in Malaysia. However, searching the suitable site for landfill is the major problem as the amount of sludge produced keeps on increasing. Reuse of the sludge could be an alternative to disposal. This study investigated the reusability of WTS as brick making material. The performance of clay-WTS bricks produced by mixing clay with different percentages of WTS with increments of 20% from 0% up to 100% was investigated. Each molded brick with optimum moisture content was pressed under constant pressure, oven-dried at 100˚C for 24 hours followed by heating at 600˚C for 2 hours and 1000˚C for 3 hours. Scanning electron microscopy (SEM), X-ray diffraction (XRD) and energy dispersive X-ray (EDX) analysis were used to characterize clay, WTS and clay-WTS bricks.  The performance of the bricks were evaluated with firing shrinkage, loss on ignition (LOI), water absorption, bulk density, and compressive strength tests. Increasing the sludge content results in a decrease of brick firing shrinkage, and increase of water absorption and compressive strength. The results revealed that the brick with 100% by weight of sludge could generate the highest compressive strength of 17.123N/mm2. It can be concluded that the bricks with 20 to 100% of water treatment sludge comply with the Malaysian Standard MS7.6:1972, which can fulfill the general requirement for usage of clay bricks in wall construction.

Characterization of Raw and Thermally Treated Alum Sludge

2016 ◽  
Vol 701 ◽  
pp. 138-142 ◽  
Author(s):  
Mohamat Yusuff Soleha ◽  
Keat Khim Ong ◽  
Wan Yunus Wan Md Zin ◽  
Ahmad Mansor ◽  
Fitrianto Anwar ◽  
...  
Keyword(s):  
Water Treatment ◽  
Heating Temperature ◽  
Low Cost ◽  
Waste Product ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Alum Sludge ◽  
Thermally Treated

Use of alum as a coagulant in drinking water treatment process generates an alum sludge as a waste product. Since the amount of this sludge is huge, it is crucial for a water work management to properly handle and dispose of this sludge. Reuse of this alum sludge as a solid adsorbent is one of the proposed applications for this material but modification and characterization are needed to alter and identify its properties so that optimum benefits are obtained. This paper reports characterization of raw and thermally treated alum sludge. The raw alum sludge was collected from a local water treatment plant and heated at 300 °C and 800 °C for 7 hours using a furnace before characterization using scanning electron microscopy energy (SEM), thermogravimetric (TGA), X-ray diffraction (XRD) and Brunauer-Emmett-Teller (BET). The results showed that surface morphology, thermal properties, microstructure, surface area and porosity of the sludge were affected by heating temperature whereby increase the heating temperature resulted in improved thermal stability of the sludge. The results also revealed that both raw and thermally treated alum sludge were mesoporous materials and mainly compose of quartz and kaolinite. It can be said that the sludge could be a good candidate as low cost adsorbent.

scholarly journals Research on making material from waste sludge taken from domestic water treatment plant for arsenic removal from water

2018 ◽  
Vol 8 (4) ◽  
pp. 212-216
Author(s):  
Thi Hoa Trinh ◽  
Thi Phuong Thao Nguyen ◽  
Kim Thoa Bui ◽  
Thi Uyen Dang ◽  
Xuan Huan Nguyen
Keyword(s):  
Water Treatment ◽  
Iron Content ◽  
Arsenic Removal ◽  
Low Cost ◽  
Social Economy ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Domestic Water ◽  
Waste Sludge ◽  
Water Provision

Iron oxide is a good and inexpensive adsorbent for arsenic (As) compounds and other heavy metals in water (Fe, Cu, Cd, Pb, Ni, Zn). Waste sludge from water treatment plant, which is highly in iron content, can be considered as a great adsorbent. Utilizing this waste as material for water treatment would get benefits on not only environment but also energy, resources and social economy. This study describes experiments to produce arsenic adsorbent material from waste sludge taken from Ha Dinh water treatment plant by using glass water, Fe(NO3)3 and heat to modify and enrich iron content. This process aims to make a good material for filtration and sorption of As. Other effects of pH, time, adsorbent mass, and adsorbate concentration are also considered. The processes are successful in removing Arsenic ion clearly. Initial As sample of 1000μg/L, contact time 4 hours, material 1 g/L, the efficiency is 99.64%. Treated water is under national technical regulation on domestic water quality (QCVN 02:2009/BYT column I), where column I is applicable to water provision units. Research also starts to make material particles, which are more favorable to practical application. These adsorbent productions after modification are beneficial with low-cost and environment-friendly advantages. Oxít sắt là một chất hấp phụ tốt và rẻ trong việc loại bỏ các hợp chất asen (As) và một số kim loại nặng khác trong nước (Fe, Cu, Cd, Pb, Ni, Zn). Trong khi đó, bùn thải từ các nhà máy xử lí nước giàu thành phần sắt, có thể xem là một vật liệu hấp phụ tốt. Việc tận dụng bùn thải này làm vật liệu xử lý ô nhiễm không chỉ đem lại những lợi ích cho môi trường mà còn về mặt tài nguyên, năng lượng và kinh tế xã hội. Báo cáo này trình bày cách chế tạo vật liệu từ bùn thải của nhà máy xử lý nước cấp Hạ Đình thành vật liệu xử lý ô nhiễm asen bằng cách sử dụng thủy tinh lỏng, Fe(NO3)3 và nhiệt để biến tính làm tăng hàm lượng sắt trong bùn thải, tạo vật liệu tốt cho quá trình lọc và hấp phụ As. Các nhân tố ảnh hưởng tới hiệu suất hấp phụ như pH, thời gian, khối lượng chất hấp phụ, và nồng độ As cũng được đưa ra đánh giá. Việc loại bỏ As đạt hiệu quả rõ rệt. Với nồng độ As ban đầu là 1000 μg/L, thời gian xử lý 4 giờ, vật liệu sử dụng là 1g/L thì hiệu suất xử lý đạt 99,64%. Nồng độ As sau xử lý đạt tiêu chuẩn QCVN 02:2009/BYT, cột I – Quy chuẩn kỹ thuật quốc gia về chất lượng nước sinh hoạt, cột I áp dụng đối với các cơ sở cung cấp nước. Nghiên cứu cũng bước đầu thử nghiệm chế tạo thành viên vật liệu để thuận lợi hơn trong việc ứng dụng trong thực tiễn. Vật liệu bùn thải sau biến tính có lợi thế về chi phí thấp và thân thiện với môi trường.

Water treatment plant residuals management

1997 ◽  
Vol 35 (8) ◽  
pp. 45-56 ◽  
Author(s):  
H. B. Dharmappa ◽  
A. Hasia ◽  
P. Hagare
Keyword(s):  
Water Treatment ◽  
Environmental Concern ◽  
Low Cost ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Optimal Dose ◽  
Ease Of Use ◽  
Large Area ◽  
Loading Rates ◽  
Polymer Addition

Water treatment plants produce enormous amounts of sludge. Due to increased environmental concern, recently, there is considerable amount of pressure on the water authorities for the safe disposal of the sludge. Currently, the most acceptable form of disposal is sanitary landfilling, which requires sludge to be dewatered to 20-40% of solids. One of the most commonly used dewatering techniques is sand drying beds. This process is popular because of its reliability, ease of use and low cost. However, one of the basic concerns with this process is the requirement of a large area of land. This could be overcome by chemical conditioning of the sludge, which can accelerate the dewatering rate substantially. At this stage, however, there are no guidelines for the design of the sand drying beds for treating chemically conditioned sludges. This study is conducted to investigate the design and performance of sand drying beds for treating chemically conditioned water treatment plant (WTP) sludge. Experiments are conducted using laboratory scale sand drainage columns. The results indicate that the drainage rates, after adding polymer, increased by 9 times for clarifier sludge and 20-25 times for filter backwash sludge. Thus, the land area requirement for sand drainage bed can be drastically reduced through polymer addition. Optimal dose of polymer is found to be between 3 and 6 kg/t of dry solids, with dilute sludges requiring high dosages. The cake solids concentration increased from 3 to 12% as the polymer dose increased from 0 to 16 kg/t of dry solids. The variation of drainage rates and cake solids with solids/hydraulic loading rates are found to vary depending on the type of sludges and polymers. The filtrate quality is found to be independent of polymer dose and solids loading rates.

scholarly journals Heavy metals in a degraded soil treated with sludge from water treatment plant

2005 ◽  
Vol 62 (5) ◽  
pp. 498-501 ◽  
Author(s):  
Sandra Tereza Teixeira ◽  
Wanderley José de Melo ◽  
Érica Tomé Silva
Keyword(s):  
Heavy Metals ◽  
Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
National Forest ◽  
Water Treatment Sludge ◽  
Retention Capacity ◽  
Degraded Soil ◽  
Metal Contents ◽  
Randomized Experimental Design

The application of water treatment sludge (WTS) to degraded soil is an alternative for both residue disposal and degraded soil reclaim. This study evaluated effects of the application of water treatment sludge to a Typic Hapludox soil degraded by tin mining in the National Forest of Jamari, State of Rondonia, Brazil, on the content of heavy metals. A completely randomized experimental design with five treatments was used: control (n = 4); chemical control, which received only liming (n = 4); and rates D100, D150 and D200, which corresponded to 100, 150 and 200 mg of N-sludge kg-1 soil (n = 20), respectively. Thirty days after liming, period in which soil moisture was kept at 70% of the retention capacity, soil samples were taken and analyzed for total and extractable Fe, Cu, Mn, Zn, Cd, Pb, Ni, and Cr. The application of WTS increased heavy-metal contents in the degraded soil. Although heavy metals were below their respective critical limits, sludge application onto degraded areas may cause hazardous environmental impact and thus must be monitored.

scholarly journals PHOSPHATE REMOVAL FROM AQUEOUS SOLUTION BY USING MODIFIED SLUDGE FROM WATER TREATMENT PLANT

2018 ◽  
Vol 56 (2C) ◽  
pp. 43-49
Author(s):  
Dang Thi Thanh Loc
Keyword(s):  
Aqueous Solution ◽  
Water Treatment ◽  
Low Cost ◽  
Treatment Plant ◽  
Drinking Water Treatment ◽  
Water Treatment Plant ◽  
Phosphate Removal ◽  
Maximum Adsorption Capacity ◽  
P Concentration ◽  
P Removal

Heat and humic acid modified sludge (MS) from drinking water treatment plant (DWTP) is used as an adsorbent for removal of phosphate (P) from aqueous solution. The MS was characterized by XRD and SEM observation. The effects of pH, adsorbent dosage, initial P concentration, and exposure time on the P removal were studied. Under identical treatment conditions (MS dosage = 10 g/L, initial P concentration = 10 mg/L, pH 7, 120 rpm, and room temperature), a removal efficiency of 91  % was obtained within 240 min. The Freundlich and Langmuir adsorption models were used for the mathematical description of adsorption equilibrium and it was found that P removal was best described by Langmuir model. The maximum adsorption capacity of the adsorbent based on sludge of Quang Te DWTP was 0.90 mg/g. The adsorption process followed pseudo-second-order kinetics (R2 ≥ 0.98). These findings suggest that MS has potential applications as a low-cost adsorbent for P treatment.

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