scholarly journals Content changes of adsorbable organically bound halogens during sludge centrifugation and drying

2011 ◽  
Vol 57 (No. 1) ◽  
pp. 30-36
Author(s):  
K. Hrich ◽  
B. Groda
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Material Balance ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
The Czech Republic ◽  
Balance Analysis ◽  
Adsorbable Organically Bound Halogens

A wastewater treatment plant in Brno may be one of the wastewater treatment plants in the Czech Republic using a dryer for dewatering the sludge. The results of an adsorbable organically bound halogens balance analysis measured on the sludge dryer at the waste water treatment plant in Brno are demonstrated in this work. The aim of this work was to calculate the material balance in the treatment process (centrifugation and drying). Control places were chosen and then samples of water and sludge (at the inlet and outlet of the system) were collected. The adsorbable organically bound halogens concentration was detected in these samples by the coulometric method.

Description and test of a new generation of nutrient sensors

1996 ◽  
Vol 33 (1) ◽  
pp. 25-35 ◽  
Author(s):  
A. Lynggaard-Jensen ◽  
N. H. Eisum ◽  
I. Rasmussen ◽  
H. Svankjær Jacobsen ◽  
T. Stenstrøm
Keyword(s):  
Wastewater Treatment ◽  
Response Times ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Flow Analysis ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Pilot Scale ◽  
Waste Water Treatment Plant ◽  
Aeration Tank

Sensor prototypes for measurement of ammonium, nitrate and phosphate in wastewater treatment plants are described together with the results obtained in laboratory and pilot scale wastewater treatment plants. A functional description of the sensor principles is presented together with the installation and operation procedures. Basically the measurements are done using membrane technology in combination with semi-micro Continuous Flow Analysis (μCFA) with classic colorimetry. Because of this the sensors can be installed directly in the aeration tanks without any need for sampling, filtration, etc. Furthermore, the semi-micro scale is used in such a way, that handling of chemicals and waste is a closed loop in a package to be changed once a month. The sensors have been tested thoroughly in a pilot scale waste water treatment plant (recirculation) using real raw wastewater as well as artificial wastewater. The sensors have been placed directly in the aeration tank or in the anoxic tank of the pilot plant. The tests show very little, if any, fouling problems due to the membrane material used. The test results show a good reproducibility and most important, compared to other available sensors/analyzers on the market, very low response times, less than 5 minutes. Owing to these low response times, experiments with direct measurement of nitrification and denitrification rates were carried out.

Environmental Impact of the Microbial Aerosol Emissions from Wastewater Treatment Plants

1982 ◽  
Vol 14 (1-2) ◽  
pp. 289-309 ◽  
Author(s):  
C Lue-Hing ◽  
D R Zenz ◽  
S J Sedita
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Ambient Air ◽  
Waste Water Treatment Plant ◽  
Aeration Tank ◽  
Major Study ◽  
Aerosol Emissions

The literature on microbial emissions from wastewater treatment plants is reviewed and a major study of microbial aerosol emissions from such a plant is described and discussed. The literature was found to be repleted with studies which showed that microbial aerosols are emitted from wastewater treatment plants but rapid die-away was shown once the aerosols reach the ambient air. Epidemiological studies of wastewater treatment plant workers and of communities nearby such plants gave overwhelming evidence to show that wastewater treatment plants do not affect the health of the local populace nor the plant workers themselves. The paper describes a major study of the microbial aerosol emissions of a waste-water treatment plant operated by the Metropolitan Sanitary District of Greater Chicago. In this study, it was found that aerosols containing microorganisms were emitted from the aeration tank surface at rates of 208 to 386 standard plate counts per cubic meter of air at a distance of 0.3 m above the surface. However, it was found that there was rapid die-away of microbial emission with distance from the aeration tanks both horizontally and vertically. It was concluded, based upon the literature review and the major study described, that microbial aerosol emissions from wastewater treatment plants were not a significant factor in the health of the surrounding populace.

scholarly journals Primary treatment of the waste water treatment plant from the point of view of the current legislation

2010 ◽  
Vol 58 (2) ◽  
pp. 205-212
Author(s):  
Monika Szostková ◽  
Tomáš Vítěz
Keyword(s):  
Wastewater Treatment ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Total Solid ◽  
Dry Mass ◽  
Primary Treatment ◽  
Coliform Bacteria ◽  
Waste Water Treatment Plant

This contribution focuses on an analysis of sand from nine different wastewater treatment plants in South Moravian Region. We conducted an analysis and evaluation of microbial properties of sand in accordance to Act No. 185/2001 Coll. on waste as amended, resp. Decree No. 381/2001 Coll. Content of following parameters were monitored, thermotolerant coliform bacteria, coliform bacteria, enterococci, total solid, ash free dry mass. We encountered several interesting findings, which pertained mainly to the content of microorganisms in sand. Knowledge of microorganism content should show, how the primary treatment of the wastewater treatment plant works, and should be very interesting indicator.

DESIGN PLANNING WASTEWATER TREATMENT PLANT OF NATA DE COCO INDUSTRY WITH THE ACTIVATED SLUDGE PROCESS

2016 ◽  
Vol 9 (2) ◽  
Author(s):  
Dinda Rita K. Hartaja ◽  
Imam Setiadi
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Activated Sludge ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Appropriate Technology ◽  
Waste Water Treatment Plant ◽  
Activated Sludge Process ◽  
High Level

Generally, wastewater of nata de coco industry contains suspended solids and COD were high, ranging from 90,000 mg / l. The high level of of the wastewater pollutants, resulting in nata de coco industry can not be directly disposed of its wastewater into the environment agency. Appropriate technology required in order to process the waste water so that the treated water can meet the environmental quality standards that are allowed. Designing the waste water treatment plant that is suitable and efficient for treating industrial wastewater nata de coco is the activated sludge process. Wastewater treatment using activated sludge process of conventional (standard) generally consists of initial sedimentation, aeration and final sedimentation.Keywords : Activated Sludge, Design, IPAL

scholarly journals An emergent accession for the optimal systematize of waste water utilization plants using artificial intelligence

2021 ◽  
Author(s):  
Mohd Abul Hasan
Keyword(s):  
Waste Water ◽  
Artificial Intelligence ◽  
Water Treatment ◽  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Sewage Treatment ◽  
Sewage Treatment Plant ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant

Abstract The treatment of wastewater is an essential factor in preventing pollutants and promoting the quality of the water. The inherent complexity, influential impact and the solid waste infrastructure lead to confusion and variance in the primary clarifier for wastewater. These inconsistencies lead to variations in the purity and capacity constraints of wastewater and the existential impact of water receipt. The water treatment is a complicated task that has means of chemical, technical & biochemical influences. A credible ANN method is necessary for another waste water treatment plant to prevent the breakdown of the processes. Virtual reality seems to have become a strong solution for preventing waste management uncertainties and problems. This is not only due to high deformations but also to significant external disturbances that water systems are controlling challenges. Climate is among the most significant of such disturbances. Various environmental conditions actually include different influx frequencies and levels of substances. Water contamination has become one of the extremely serious growing conservation; sewage treatment plant identification is a key major issue here and the agencies enforce tighter requirements for the operating of wastewater software systems. This article plans to create models of achievement and prospects for the possible future guidance of recent research borders for the use of artificial intelligence in wastewater treatment plants which concurrently deal with pollutants. This study has shown us that the composite ANN provides a greater level of competence in plant prediction and systemization. Highlight Systematize of Wastewater Utilization Plants, Artificial Neural Networks, artificial intelligence, Prediction Analysis, Reliability.

scholarly journals Reabilitation of a wastewater treatment plant – possible environment impact

2017 ◽  
Vol 19 (1) ◽  
pp. 65-78
Author(s):  
Mădălina Stănescu ◽  
Constantin Buta ◽  
Geanina Mihai
Keyword(s):  
Waste Water ◽  
Wastewater Treatment ◽  
Water Treatment ◽  
Wastewater Treatment Plant ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Environment Impact ◽  
Operational Phase

Abstract Romania, has declared, by the Governmental Decision nr.352/2005, all its territory as a sensitive area. This implies that, for all urban agglomerations larger than 10.000 population equivalent waste water treatment plants (WWTP) with nutrient removal must be built or upgraded. This paper presents the results regarding the possible environmental impacts expected from the project for construction of waste water treatment plant in the City of Vaslui, with main focus on surface water. This research study includes assessment methodology, project description regarding the rehabilitation and extension of the Vaslui waste water treatment plant, data related to water resources, impact assessment on water and appropriate mitigation measures. The assessment of the impacts has been performed for the construction and operational phase of the wastewater treatment plant. The construction phase was subdivided into several phases, while in the operational phase the impacts are analyzed following the line for treatment of the wastewater and effluent production, the line for sludge production and drying process, sludge disposal in safety conditions considering the provisions of 86/278/EEC Directive and the line for biogas utilization.

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 Water Hyacinths–biomass Production Potential at a Waste Water Treatment Plant

2020 ◽  
pp. 1-10
Author(s):  
K. Dölle ◽  
J. Tong ◽  
Q. Wang
Keyword(s):  
Wastewater Treatment Plants ◽  
Waste Water Treatment ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Waste Water Treatment Plant ◽  
Trickling Filter ◽  
Initial Weight ◽  
Short Period ◽  
Secondary Clarifier ◽  
Water Hyacinths

The growth of Eichhornia crassipes under outdoor conditions was examined during a 42-day test in a wastewater treatment plants primary clarifier, trickling filter and secondary clarifier using municipal residential wastewater as the chosen supplier of nutrients. Test results showed that Eichhorn crassipes plants gained a significant amount of biomass in a short period. Plants could increase their biomass 15.1-fold from the initial weight of 457.6 g to 6898.8 g for the primary clarifier and 12.6-fold from the initial weight of 288.2 g to 3635.0 g for the secondary clarifier. Plant growth in the trickling filter was limited by factors such has as observed bird picking, Cladophra algae growth in the trickling filter and on the roots of Eichhorn crassipes, and intermittent exposure to nutrients contained in the municipal residential wastewater.

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