scholarly journals Approximation of landfill drainage discharge by De Zeeuw-Hellinga model, and its verificationon sanitary landfill of solid domestic waste

2011 ◽  
Vol 51 (No. 8) ◽  
pp. 335-342
Author(s):  
J. Štibinger
Keyword(s):  
Water Discharge ◽  
Drainage System ◽  
Real Data ◽  
Design Parameters ◽  
Sanitary Landfill ◽  
Time Interval ◽  
Basic Design ◽  
Domestic Waste ◽  
Solid Domestic Waste ◽  
Water Recharge

The goal of this work is to present a suitable tool or model for the evaluation of the internal landfill water discharge, in relation to the basic design parameters of internal landfill drainage system and other processes. De Zeeuw-Hellinga’s drainage theory fulfils those requirements. De Zeeuw-Hellinga’s drainage intensity factor takes in basic design parameters of internal landfill drainage system and also hydro-physical properties of the collected waste. The drainage theory calculates with landfill internal water recharge to the drainage system within a certain time interval. In practice this method was successfully verified in a sanitary landfill of solid domestic waste in Osecna (a region near Liberec, Czech Republic). The comparison of the real data of the measured values of the internal landfill water discharges with calculated values, demonstrated eligibility of the use of De Zeeuw-Hellinga drainage theory as a good instrument for approximation of the internal landfill water discharges. This tool needs only a minimum of information and can be applied for the evaluation of basic design parameters of the internal landfill drainage system, for the design of the landfill reservoir capacity, and also for description of the landfill hydrology processes.

Contaminant migration from sanitary landfill leachate through soil monoliths

1995 ◽  
Vol 32 (7) ◽  
pp. 215-219 ◽  
Author(s):  
Magdelinka Radenkova-Yaneva ◽  
Emilia Kostakeva ◽  
Dimiter Toshev
Keyword(s):  
Clayey Soil ◽  
Sanitary Landfill ◽  
Potential Danger ◽  
Contaminant Migration ◽  
Clay Liners ◽  
Domestic Waste ◽  
Solid Domestic Waste ◽  
Inorganic Substances ◽  
Sanitary Landfills ◽  
Sanitary Landfill Leachate

It is well known that the leachates from solid domestic waste sanitary landfills are heavily polluted with organic and inorganic substances. As they are of a potential danger for the environment, their uncontrolled seepage is avoided in the modern sanitary landfills by means of suitable insulation. This is mostly made of natural materials with a low filtration coefficient. The present paper considers the results of the filtration characteristics, studying natural clayey soil model liners. The leachate contaminants distribution from the sanitary landfill in Sofia (Suhodol) is traced out in different liner depths. The mechanism of pollutant attenuation in the liners is considered. It is found that a part of the leachate components (Fe, Mn, SO42−, PO43−) stays in clayey liners. Besides, as a result of pore colmatation the permeability of the liners is decreased. It is shown that soil monoliths with a proper thickness might serve as a sufficiently safe barrier against leachate filtration in adjacent aquifers. On the base of the results obtained the thickness of the clay liners in the solid domestic waste sanitary landfills could be optimized.

Experimental design and evaluation of a peatland drainage system for forestry by optimization of synthetic hydrographs

1988 ◽  
Vol 18 (3) ◽  
pp. 353-373 ◽  
Author(s):  
József Tóth ◽  
Don Gillard
Keyword(s):  
Water Table ◽  
Drainage System ◽  
Daily Rainfall ◽  
Environmental Parameters ◽  
Design Parameters ◽  
Time Interval ◽  
Experimental Plot ◽  
Rainfall Events ◽  
Drainage Systems ◽  
Flood Duration

A ditch system was designed, constructed, and evaluated on a 1-km2 experimental plot in peat-covered wetland in Slave Lake Forest, Alberta, Canada, during 1981–1985. The purpose of the experiment was the development of techniques and procedures for the design of drainage systems for water-table control in large tracts of forested peatlands of northern Alberta, in order to enhance tree growth. The technical objective of the envisaged drainage systems is to prevent the water table from rising above a specified depth, or drainage norm νm, below the land surface, for a continuous time interval longer than a specified flood duration limit λm, during the growing season. The position of the water table and the rate and amplitude of its fluctuations in a ditched area depend on the environmental parameters (K, hydraulic conductivity; S*, field coefficient of water-table response to precipitation; z, depth to the first effectively impermeable stratum; P, pattern of daily rainfall) the design parameters (L, ditch spacing; u, ditch depth), and at later stages of drainage, the effect of the tree stand. The objective of the design is, therefore, to determine appropriate values of L and u as functions of the environmental parameters to be used in the construction of operational drainage systems. The central component of the design procedure is the optimization of synthetic hydrographs. The synthetic hydrograph is a graphical representation of calculated time series of the water table's fluctuations reflecting the effect of discrete rainfall events under specified drainage conditions. Synthetic hydrographs were calculated with the U.S. Bureau of Reclamation drain spacing formula adapted here for daily rainfall events and ranges of estimated environmental and assumed design parameters. An experimental drainage system was constructed with preliminary design parameters that were expected to satisfy the criteria νm and λm. In addition, 14 water-table observation wells and a rain gauge were installed and operated for two summers. Synthetic hydrographs were then computed using the actually implemented design parameters, the actual rainfall pattern and a fixed z value, leaving K and S* as the only unknown variables. Those K and S* values giving the best approximation of calculated to observed hydrographs were considered to represent the effective field values and were used in turn to calculate the final design parameters, again by hydrograph matching. Final values for K and S* for two subregions of the experimental plot were found to be K1 = 0.37 m/d, S1* = 0.13; and K2 = 0.26 m/d, S2* = 0.11. For subregion No. 2 a ditch spacing L = 25 m and ditch depth u = 0.9 m satisfy the stipulated drainage norm νm = 0.4 m and flood duration limit λm = 14 days, using P1962, which was the wettest year for the last 28 years in the region.

SANITARY-HYGIENIC DISTINCTIONS OF THE APPLICATION OF PROBIOTICS FOR THE TREATMENT OF SOLID DOMESTIC WASTE

2019 ◽  
Vol 2019 (69) ◽  
pp. 82-87
Author(s):  
V.V. Stankevych ◽  
◽  
I.O. Teteniova ◽  
◽  
◽  
...  
Keyword(s):  
Domestic Waste ◽  
Solid Domestic Waste

Effect of basic design parameters on IC debonding of CFRP-strengthened shallow RC beams

2015 ◽  
Vol 34 (18) ◽  
pp. 1526-1539 ◽  
Author(s):  
Mohammed A Al-Saawani ◽  
Ahmed K El-Sayed ◽  
Abdulaziz I Al-Negheimish
Keyword(s):  
Design Parameters ◽  
Basic Design ◽  
Rc Beams

scholarly journals Studying the Effects of Roads Geometry and Design Parameters on the Pavement Drainage System

2021 ◽  
Vol 7 (1) ◽  
pp. 49-58
Author(s):  
Mohammad Awwad
Keyword(s):  
Positive Impact ◽  
Drainage System ◽  
Road Construction ◽  
Design Parameters ◽  
Water Flow Velocity ◽  
The Road ◽  
Drainage Time ◽  
Operations And Maintenance ◽  
And Performance ◽  
Good Drainage

Background: Water floods have a considerable impact on roads sustainability by creating roads cracks, breaking down and holes, and failure for some other parts. The existence of good drainage system serviced the road and draining the water resulted from rain floods is crucial. These significant influences can be classified as positive or negative, low, moderate, or high. Aim and Objectives: This paper discusses the water floods and rainfall effects on roads and highways in Jordan as well as the drainage system on road sustainability and performance. The main aim of this paper is to investigate and analyse water as rainfall or floods affecting roads and highways in Jordan. The importance of this study is represented by studying and analysing the effects of rainfall and water floods on road construction and sustainability in Jordan after the latest high rain sizes of this winter and water floods, which affect the roads and highways in a good percentage. The other importance of the study is represented in offering solutions to problems caused by the environmental effects, specially floods and high rainfall rates. Methodology: all data and information about status of Jordanian roads during winter and floods are collected from real cases of about 40 main and semi-main roads in Jordan.  Results and Conclusions: A good drainage system and repair operations and maintenance generally have a positive impact on road sustainability and survival age. The effects of slopes of the road and surface of the asphalt, rainfall intensity, and water flow velocity on drainage length and drainage time and water depth are discussed here. Doi: 10.28991/cej-2021-03091636 Full Text: PDF

scholarly journals Development of hardware-software complex for adaptive sorting of solid domestic waste

2021 ◽  
Author(s):  
Kirilenko Vladimir
Keyword(s):  
Autonomous System ◽  
Object Class ◽  
Domestic Waste ◽  
Solid Domestic Waste ◽  
Software Complex ◽  
Specific Object ◽  
Adaptive Sorting

Abstract This project presents an autonomous system that allows to classify various solid garbage as well as to control a manipulator-sorter of the waste. Sorting is performed on the basis of material, shape, or specific object class. The development was focused on the system adaptability and acceleration of training, which allows the system to adapt changes in incoming waste.

scholarly journals ENVIRONMENTAL ANALYTICAL CHARACTERISTICS OF GAS EMISSIONS FROM THE SOLID DOMESTIC WASTE LANDFILLS OF TURKISTAN OBLAST

2019 ◽  
Vol 5 (437) ◽  
pp. 124-131
Author(s):  
Gaukhar Askerovna Sainova ◽  
◽  
Moldir Orazalievna Baikhamurova ◽  
Amankul Dzhakanovna Akbasova ◽  
Zhanar Zheniskizi Yessenbayeva ◽  
...  
Keyword(s):  
Domestic Waste ◽  
Solid Domestic Waste ◽  
Gas Emissions

scholarly journals Two-dimensional stochastic modeling for predicting bankruptcy for manufacturing companies

2021 ◽  
Vol 54 (2) ◽  
pp. 123-129
Author(s):  
James C. Fu ◽  
Winnie H. W. Fu
Keyword(s):  
Brownian Motion ◽  
Real Data ◽  
Bankruptcy Prediction ◽  
Boundary Crossing ◽  
Time Interval ◽  
Two Dimensional ◽  
Manufacturing Companies ◽  
Boundary Crossing Probability ◽  
Data Set ◽  
Crossing Probability

Increasing accuracy of the model prediction on business bankruptcy helps reduce substantial losses for owners, creditors, investors and workers, and, further, minimize an economic and social problem frequently. In this study, we propose a stochastic model of financial working capital and cashflow as a two-dimensional Brownian motion X(t) = (X1(t),X2(t)) on the business bankruptcy prediction. The probability of bankruptcy occurring in a time interval [0,T] is defined by the boundary crossing probability of the two-dimensional Brownian motion entering a predetermined threshold domain. Mathematically, we extend the result in Fu and Wu (2016) on the boundary crossing probability of a high dimensional Brownian motion to an unbounded convex hull. The proposed model is applied to a real data set of companies in US and the numerical results show the proposed method performs well.

scholarly journals ANALISA PERENCANAAN SISTEM DRAINASE DALAM UPAYA PENANGGULANGAN BANJIR DI KECAMATAN GANDUSARI KABUPATEN TRENGGALEK

2019 ◽  
Vol 2 (1) ◽  
pp. 131
Author(s):  
Rizqi Dwi Prasetyo ◽  
Yosef Cahyo ◽  
Ahmad Ridwan
Keyword(s):  
Water Discharge ◽  
Drainage System ◽  
Domestic Wastewater ◽  
Channel Height ◽  
Construction Costs ◽  
Flood Prevention ◽  
Dirty Water ◽  
Rainwater Runoff ◽  
The Cost ◽  
The Ideal

In industrial areas or densely populated settlements, generally found channels that function besides to drain rainwater as well as to discharge domestic wastewater or dirty water from households. Drainage systems are often the main problem in the occurrence of flooding. It is necessary to analyze how their performance and resistance to flooding in the District of Gandusari, Trenggalek Regency. For analysis of drainage system planning in flood prevention efforts, the authors used the Van-Breun and Mononobe calculation methods to determine the number of incoming water discharge, the ideal dimension of the channel to accommodate the inlet discharge channel, and calculate the cost budget plan (RAB) of the builder. From the analysis, results obtained a cumulative discharge of rainwater, and dirty water entering the drainage amounted to 0.4695 m3 / sec. From the calculation, the ideal dimensions of the drainage can be obtained to be able to accommodate rainwater runoff and dirty water discharge using square channels, where the 1.5 m channel height is all added to the water level of 0.2 m and 0.7 m in width 500 m. While the budget plan for the construction costs is Rp. 794,048,000.00 -Di daerah industri atau pemukiman padat penduduk umumnya ditemukan saluran yang berfungsi selain untuk mengalirkan air hujan juga sekaligus untuk pembuangan air limbah domestik ataupun air kotor dari rumah tangga. System drainase sering menjadi pokok masalah dalam terjadinya banjir, maka perlu di Analisa bagaimana kinerjanya dan ketahanan terhadap banjir di Kecamatan Gandusari Kabupaten Trenggalek. Untuk analisis perencanaan sistem drainase dalam upaya penanggulangan banjir penulis menggunakan metode perhitungan Van-Breun dan Mononobe untuk mengetahui angka debit air yang masuk, dimensi ideal saluran untuk menampung saluran debit air masuk dan menghitung rencana anggaran biaya (RAB) pembangunanya. Dari hasil analisa didapatkan debit komulatif air hujan dan air kotor yang masuk ke drainase sebesar 0.4695 m3/detik. Dari perhitungan didapatkan dimensi saluran drainase yang ideal agar mampu menampung limpasan air hujan dan debit air kotor dengan menggunakan saluran berbentuk persegi, dimana tinggi saluran 1,5 m semuanya ditambahkan dengan tinggi jagaan air sebesar 0,2 m dan lebar 0,7 m dengan panjang 500 m. Sedangkan rencana Anggaran Biaya pembangunannya sebesar Rp. 794.048.000,00,-

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