BY: P.D.NITYA




Need For Low Energy- Intensive Methods For Treating Low Strength - Large Volume Wastewater (like sewage, industrial washwater, etc.)


1.1 Definition of Low Strength Wastewater

Typical composition of untreated domestic wastewater (influent) was defined using concentration levels as weak, medium, and strong. Weak, medium, and strong levels of BOD5 (mg/L) were identified as 110, 220, and 400, concentrations of TSS (mg/L) were identified as 100, 220, and 350, and concentrations of ....etc

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Advanced technologies in water and wastewater treatment



Introduction
Conventionalwater andwastewater treatment processes have
been long established in removing many chemical and microbial
contaminants of concern to public health and the environment.
However, the effectiveness of these processes has become
limited over the last two decades because of three new
challenges (Langlais et al. 1991; Mallevialle et al. 1996). First,
Received for publication ....etc

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hi.. 'm Karthik doin environmental engineering final year..... 'm student of Sri Jayachamarajendra College of Engineering,Mysore.i here by request for the report ofELECTROCHEMICAL COAGULATION (ECC) TECHNOLOGY FOR TREATMENT OF HOSPITAL WASTEWATER....


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The advent of membranes makes the wastewater treatment easier nowadays. Activated sludge process (ASP) , which is the oldest technique in wastewater treatment , is combined with highly efficient membrane filtration to start a sophisticated technique called Membrane Bioreactor (MBR).It is an efficient process for maintaining a long solids retention time(SRT) at a relatively short hydraulic retention time(HRT),which is needed for the treatment of waste water. MBR is favored to all other conventional techniques because the treated water is free fr ....etc

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The article presents the reports the performance of municipal waste-water treatment plant using laterite soil-based constructed soil filter (CSF) system. The plant was monitored over a period of 17 months and the result is presented. The dissolved oxygen levels were increased along with the chemical oxygen demand (COD). The bio-chemical oxygen demand (BOD) reduced was significantly reduced. The features of the system are:
lowHRT, high,hydraulic loading, no chemicals, pretreatment and mechanical aeration, odor free, lowenergy requirement.
....etc

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TREATMENT OF DISTILLERY WASTEWATER USING MEMBRANE TECHNOLOGIES
Presented by
SANJAY KUMAR
(Roll No. 09318001)
Under the guidance of
Professor Anil Kumar Dikshit
CENTER FOR ENVIRONMENTAL SCIENCE AND ENGINEERING
INDIAN INSTITUTE OF TECHNOLOGY BOMBAY

INTRODUCTION
1.1 BACKGROUND
The purification of waste water from various industrial processes is a world wide problem of increasing importance due to the restricted amounts of water suitable for direct use, the high price of the purification and the necessity of utilizing the w ....etc

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Preliminary “Treatment”
Equalization
Smooth out fluctuations in flow rate
Results in more consistent treatment
Flow Measurement
Flow rate information needed for efficient operation, chemical addition, etc
Equalization
Objective
Decrease fluctuations in flow rate, to provide more consistent treatment
Accomplished by storing excess wastewater during high flow periods
Excess wastewater is released during low flow periods
Pumping
Sometimes needed to lift the water to a higher elevation than the disc ....etc

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