scholarly journals CHANGES IN THE CONCENTRATION OF HEAVY METALS (CR, CD, NI) DURING THE VERMICOMPOSTING PROCESS OF SEWAGE SLUDGE / SUNKIŲJŲ METALŲ (CR, CD, NI) KONCENTRACIJŲ KAITA NUOTEKŲ DUMBLO VERMIKOMPOSTAVIMO PROCESO METU

2014 ◽  
Vol 6 (4) ◽  
pp. 362-367
Author(s):  
Aušra Zigmontienė ◽  
Indrė Liberytė
Keyword(s):  
Heavy Metals ◽  
Sewage Sludge ◽  
Eisenia Fetida ◽  
Management Strategy ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Optimal Conditions ◽  
Sewage Sludge Treatment

Sewage sludge treatment and utilization is an important issue for a biodegradable waste management strategy. Heavy metals in sewage sludge complicate its use. Vermicomposting is one of the ways to improve the characteristics of sewage sludge and to reduce the residual concentrations of heavy metals. Study on changes in the concentration of heavy metals (Chromium, Nickel and Cadmium), when vermicomposting sewage sludge, was performed using Californian earthworms (Eisenia fetida). For that purpose, 60 kg of sewage sludge from Vilnius Waste Water Treatment Plant were taken thus inserting 1.5 kg of Californian earthworms into it. Optimal conditions for work (optimum temperature, moisture, pH) for earthworms to survive were maintained in the course of the study that lasted 120 days and was conducted in June – August. The samples of sewage sludge and earthworms were taken every 10 days. The concentrations of heavy metals in sewage sludge were measured using atomic absorption spectroscopy. Nuotekų dumblo tvarkymo ir naudojimo problema – svarbi biologiškai skaidžių atliekų tvarkymo strategijos dalis. Lietuvoje kasmet susidaro apie 80 tūkst. tonų nuotekų dumblo, o didžiausia dalis šio kiekio vis dar sandėliuojama valyklų aikštelėse. Nuotekų dumblas gali būti efektyviai naudojamas žemės ūkyje, tačiau sunkieji metalai, esantys nuotekų dumble, apsunkina jo naudojimą. Vienas iš būdų pagerinti dumblo savybes ir kartu sumažinti liekamąsias metalų koncentracijas – nuotekų dumblo vermikompostavimas. Sunkiųjų metalų (chromo, nikelio ir kadmio) koncentracijų kaitos vermikompostuojant nuotekų dumblą tyrimas atliktas naudojant Kalifornijos sliekus (Eisenia fetida). Tirta sunkiųjų metalų koncentracijos kaita viso kompostavimo proceso metu. Tyrimui naudotas nuotekų dumblas (60 kg) buvo paimtas iš Vilniaus miesto nuotekų valyklos ir į jį įleista 1,5 kg Kalifornijos sliekų. Viso tyrimo metu buvo palaikomos optimalios sąlygos sliekams gyvuoti ir veikti (optimali temperatūra, drėgmė, pH). Tyrimo trukmė – 120 parų (birželio–rugpjūčio mėnesiai), dumblo mėginiai imti 10 parų intervalu. Išmatuotos ir nustatytos sunkiųjų metalų – chromo, nikelio ir kadmio – koncentracijos nuotekų dumble.

Application of Thermally Treated Sewage Sludge in Blended Cements

2014 ◽  
Vol 905 ◽  
pp. 191-194 ◽  
Author(s):  
Zbyšek Pavlík ◽  
Milena Pavlíková ◽  
Jan Fořt ◽  
Martina Záleská ◽  
Igor Medveď ◽  
...  
Keyword(s):  
Sewage Sludge ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Diffraction Method ◽  
High Strength ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Partial Replacement ◽  
Blended Cements ◽  
Thermally Treated

Chemical, physical, morphological, and mineralogical analysis of sewage sludge originating from a waste water treatment plant in Patras, Greece, is presented in the paper. The sewage sludge is firstly dried at 70°C, then oven-burned at 700°C for two hours and milled. The thermally treated material is analyzed using XRF and XRD, the particle size distribution is determined by a laser diffraction method. A potential use of sewage sludge in blended cements is investigated on the basis of the measurement of mechanical and basic physical properties of pastes containing the sludge in an amount of up to 60% of the mass of cement. Experimental results show that the thermal treatment of pre-dried sewage sludge and its grinding provides a material that can be successfully applied as a partial replacement of Portland cement. At a production of blended cements for high strength concrete, an up to 20% cement replacement level can be recommended.

scholarly journals Stabilization of Al-Rustamiya Waste Water Treatment Plant Sludge Using Lime

2020 ◽  
Vol 26 (9) ◽  
pp. 165-172
Author(s):  
Noor Ali Jasim ◽  
Jathwa Abdul Kareem Ibrahim
Keyword(s):  
Heavy Metals ◽  
Environmental Protection Agency ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Metals Removal ◽  
The Us ◽  
Two Parameters ◽  
Water Treatment Plant Sludge

A study was performed to evaluate heavy metals removal from sewage sludge using lime. The processes of stabilization using alkaline chemicals operating on a simple principle of raising pH to 12 or higher, with sufficient mixing and suitable contact time to ensure that immobilization can reduce heavy metals. A 0.157 m3 tank was designed to treat Al-Rustemeyia wastewater treatment plant sludge. Characteristics of raw sludge were examined through two parameters: pH and heavy metal analysis. Different lime doses of (0- 25) g CaO/100 g sludge were mixed manually with raw sludge in a rotating drum. The samples were analyzed two hours after mixing. pH and heavy metals results were compared with EPA and National Iraqi Standard (NIS). Results showed as lime was added, the concentration of heavy metals decreases the higher the dose, the less heavy metals concentrations in the sludge. Although the concentration of heavy metals in the sludge was among the determinants according to the US Environmental Protection Agency, the results showed that 750 g of lime per 3 kg of sludge had reduced the concentration of heavy metals zinc from (662.934) mg/kg sludge to (452.998) mg/kg sludge, copper from (113.101) mg/kg sludge to (64.981) mg/kg sludge, lead from (91.215) mg/kg sludge to (53.307) mg/kg sludge, nickel from 107.257 mg/kg sludge to (50.478) mg/kg sludge, molybdenum from (13.743) mg/kg sludge to (8.724) mg/kg sludge). At the same time, the dose of 450 g lime per 3 kg of sludge had reduced the concentration of chromium from (110.577) mg/kg sludge to (0) mg/kg sludge.

Evaluating the Effect of Sewage Sludge on Bioactive Components of Momordicacharantia

2021 ◽  
Vol 43 (4) ◽  
pp. 386-386
Author(s):  
Zohaib Saeed Zohaib Saeed ◽  
Ikram Ahmad Ikram Ahmad ◽  
Shahid Iqbal Shahid Iqbal ◽  
Umer Younas Umer Younas ◽  
Muhammad Pervaiz Muhammad Pervaiz ◽  
...  
Keyword(s):  
Oleic Acid ◽  
Sewage Sludge ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Bioactive Components ◽  
Medical Systems ◽  
Intestinal Gas ◽  
Treatment Of Diabetes

Momordicacharantia L. belongs to the family Cucurbitaceae. This plant has widely been reported for use in traditional medical systems for the treatment of diabetes, rheumatism, intestinal gas and malaria. The ethnicity of M. charantiais Asia, Africa and some parts of Europe where it is considered edible. Sewage sludge, a by-product of waste water treatment plant, contains several nutrients. These nutrients are known as beneficial for the better growth and good yield of the plants. The objective of this study is to optimize soil with different ratios of sewage sludge for increased growth of bioactive components in M. charantia. The plant was grown at six places; in soil containing 20%, 40%, 60% and 80% sewage sludge ratio as well as in pure soil and in pure sewage sludge. Fruit harvesting was carried out after 75 days. Methanol extract of M. charantia (Fruit) was subjected to analysis using GC-MS. Comparative quantification of 7,11-hexadecadienal, oleic Acid and stigmasterol were carried out. It has been found that the soil containing 60% sewage sludge yielded maximum quantity of 7,11-hexadecadienal, oleic Acid and stigmasterol. Therefore, optimization of soil with different ratios of sewage sludge is carried out and 60% ratio of sewage sludge in soil is recommended for the promising growth of Momordicacharantia.

scholarly journals Evsel Atıksu Arıtma Çamuru Uygulamalarının Domates Bitkisinin Verimi ve Besin Elementleri Alımına Etkisi

2020 ◽  
Vol 8 (7) ◽  
pp. 1508-1516
Author(s):  
Mustafa Öztürk ◽  
Şükrü Aslan ◽  
Ahmet Demirbaş
Keyword(s):  
Sewage Sludge ◽  
Dry Matter ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Tomato Plants ◽  
Different Doses ◽  
Macro Nutrients ◽  
Sludge Application

Use of sewage sludge in agriculture is an alternative disposal technique for this waste. Accordingly, the effects of using the sludge obtained from Sivas Waste Water Treatment Plant in different doses (0%, 1%, 2%, 3%, 4%, 5% (w/w) and chemical fertilization) on the yield and nutrient concentration of tomato plants were investigated. The study was carried out with three replications according to the experimental pattern of randomized plots in the plastic pots with the capacity of 3 kg under the greenhouse conditions of Plant and Animal Production Department of Sivas Cumhuriyet University. It has been determined that the weight of the plants roots, stems and green components dry matter increases due to the increasing sewage sludge application and the highest efficiency is in the sewage sludge application of 5%. In addition, it has been determined that the concentrations of nitrogen (N), phosphorus (P) and potassium (K) which are among the macro nutrients, tend to increase depending on the increasing dose of the sewage sludge. The concentrations of copper (Cu), manganese (Mn), iron (Fe), and zinc (Zn) which are among the micro nutrients, increased with the increasing amount of sludge. In this context, it is thought that the sludge can be used in plant breeding, provided that it falls within the boundaries of the legal legislation.

scholarly journals Effect Of Wood-Based Biochar And Sewage Sludge Amendments For Soil Phosphorus Availability

2015 ◽  
Vol 14 (1) ◽  
pp. 104-115 ◽  
Author(s):  
Vladimír Frišták ◽  
Gerhard Soja
Keyword(s):  
Sewage Sludge ◽  
Soil Phosphorus ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
P Availability ◽  
Toxic Heavy Metals ◽  
Application Rates ◽  
Mobile Forms

Abstract This study investigated the effects of two biochars (pyrolysed wood chips and garden clippings) on phosphorus (P) availability in a heavy-metal contaminated soil poor in phosphorus. Short-term 14-days incubation experiments were conducted to study how applications of biochars at different rates (1 and 5 %) in combination with (1:1) and without dried sewage sludge from a municipal waste water treatment plant (WWTP) affected the content of soil extractable P. For P-availability analyses deionized water, calcium acetate lactate (CAL), Mehlich 3 and Olsen extraction protocols were applied. In addition, the content of total and mobile forms of potentially toxic heavy metals (PTHM) was studied. Application of both biochars caused a significant decrease of PTHM available forms in sewage sludge amended soil samples. The concentration of total and available P increased with higher biochar and sewage sludge application rates.

UNJUK KERJA DAN EFISIENSI IPAL INDUSTRI BATIK CETAK DI MAKAMHAJI, SUKOHARJO DENGAN PROSES BAR SCREEN, SEDIMENTASI, DAN PROSES KOAGULASI-FLOKULASI TERHADAP PENURUNAN PARAMETER COD, BOD DAN LOGAM BERAT Cr

EKUILIBIUM ◽  
2011 ◽  
Vol 10 (1) ◽  
Author(s):  
Muljadi Muljadi
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Maximum Efficiency ◽  
The Village

<p><strong><em>Abstract</em></strong><strong>: </strong><em>Batik industry in general is equipped with the Waste Water Treatment Plant (WWTP) used for wastewater treatment in order not to endanger the environment. Printed batik industry in Makamhaji, Sukoharjo equipped Wastewater Treatment Plant (WWTP) with the bar screen, sedimentation and coagulation-flocculation for wastewater treatment in the process is simple and economical to manufacture.The research objective was to determine the magnitude of performance and efficiency of industrial WWTP batik print with the bar screen, sedimentation, and the process of coagulation - flocculation of the reduction parameters COD, BOD and heavy metals Cr. The method used is an experimental method is to perform experiments on WWTP wastewater treatment industry in the village batik print Butulan Makamhaji Sukoharjo district.Of research that has been made </em><em></em><em>known that the greater efficiency resulting from the units of the performance of the unit means that the better. And obtain maximum efficiency of the reduction parameters of COD, BOD is the bar screen unit for 37.61% and 27.22%. As for the maximum efficiency of the reduction of Cr metal pollutant parameters are in units of coagulation-flocculation of 23.66%.</em></p><p><em> </em><strong><em>Keywords</em></strong><em>: COD, BOD, heavy metals chromium, Efficiency WWTP, WWTP Performance</em></p>

scholarly journals Use of Fibrous Chemosorbents for Rain Runoff Treatment from Heavy Metals

2011 ◽  
pp. 47-57
Author(s):  
Keyword(s):  
Waste Water ◽  
Heavy Metals ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Toxic Heavy Metals ◽  
Iron Copper ◽  
Copper Zinc ◽  
Heavy Metals Ions

The paper shows availability of the fibrous chemisorbents use for treatment of storm-rain discharges from toxic heavy metals ions. When fibrous chemisorbents were used in laboratory conditions with model diluted solutions of iron, copper, zinc, and lead the metals’ content in water phase demonstrated 8—42 times decrease. It was stated that real rain discharges treatment with fibrous chemisorbents after “Pokrov Hills” (Moscow) waste water treatment plant resulted in decrease of iron, zinc, copper, and lead content.

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