waste sludge characteristics of a wastewater treatment plant compared with environmental standards
نویسندگان
چکیده
sludge production is an avoidable problem arising from the treatment of wastewater. the sludge remained after municipal wastewater treatment contains considerable amounts of various contaminants and if is not properly handled and disposed, it may produce extensive health hazards. on the other hand, this sludge has benefits for plants and soils. thereupon, land application of sludge has received much attention over the traditional incineration and dump in sea. the comprehensive regulations of u.s.epa title 40 cfr parts 503 include criteria and standards for land application of sludge. one of the most important wastewater treatment plants in tehran, iran is shoosh plant, which applies its waste sludge in agricultural lands after dewatering in drying beds. in this research, waste sludge from drying beds was examined according to 40 cfr parts 503. results indicate that the dehydrated sludge has not the characteristics required for final discharge. if the dewatering process in the existing beds of the plant would be modified according to title 40 cfr part 503, the standard of pathogen reduction class b would be achieved. waste sludge of drying bed must be applied in agricultural land with respect to the conditions of application method that is presented in vector attraction reduction. concentration of this waste sludge is less than ceiling concentration limits identified by title 40 cfr parts 503.
منابع مشابه
Characteristics and disposal options of sludge from a steel mill wastewater treatment plant
In the present study, sludge from a steel wastewater treatment plant (SWWTP) was analyzed regarding its physicochemical characteristics and metal contents, and disposal options. For these purposes, grab sampling was used to collect 18 slurry and 18 cake sludge samples in 6 mouth (May-October 2012). Mann-Whitney U test, one sample T-test and Wilcoxon signed rank test were applied to analyze the ...
متن کاملAnaerobic Codigestion of Municipal Wastewater Treatment Plant Sludge with Food Waste: A Case Study
The aim of this study was to assess the effects of the codigestion of food manufacturing and processing wastes (FW) with sewage sludge (SS), that is, municipal wastewater treatment plant primary sludge and waste activated sludge. Bench scale mesophilic anaerobic reactors were fed intermittently with varying ratio of SS and FW and operated at a hydraulic retention time of 20 days and organic loa...
متن کاملSludge Characterization of an Industrial Wastewater Treatment Plant, Iran
Background and purpose: Disposing sludge from industrial wastewater treatment plants (IWWTPs) is a serious issue because it can affect human and animals health, and also environmental quality. In this study, sludge from an IWWTP was analyzed regarding its physicochemical characteristics and disposal options. Materials and Methods: Grab sampling was used to collect 12 sludge samples biweekly (Ma...
متن کاملReduction of Pathogens from Mixture of Cow Manure, Domestic Waste and Wastewater Treatment Plant Sludge by Vermicomposting Process
Introduction: The present study aimed to investigate the microbial quality of the produced vermicomposts and compare them with the existing standards. Materials and Methods: This experimental study was conducted as a pilot-scale one in the laboratory school. Some perishable domestic wastewater mixed in a reactor, including food waste, vegetables and fruits, cow manure and sludge from wastewate...
متن کاملEnergy Management System for a Wastewater Treatment Plant: Case of Activated Sludge Bioreactors
Amand L. and Carlsson B. (2012), "Optimal areation control in a nitrifying activated sludge process" J Wtaer Research. 46(7), 2101-2110. Chae K. and J. Kang (2013), "Estimating the Independence of Munciple Wastewater Treatment Plant Incorporating Green Energy Resource". Energy Conservation and Managment. No. 75, pp. 664-672. Goldstein R. and W. Smith (2002), "Water & Sustainability (volume 4)...
متن کاملRheological Characterization of Sludge Coming from a Wastewater Treatment Plant
Problem statement: The aim of this study was that of studying the rheology of sewage sludge using two different rheological test protocols taken from literature and comparing them in order to evaluate which useful information are given from every protocol. Approach: Two different protocols have been used taking particularly into account the problems connected to sludge heterogeneous composition...
متن کاملمنابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
iranian journal of public healthجلد ۳۳، شماره ۱، صفحات ۵-۹
میزبانی شده توسط پلتفرم ابری doprax.com
copyright © 2015-2023