TERM PAPER CHE-401 SEWAGE TREATMENT CONTENTS:- ❖ Introduction ▪ What is Sewage? ▪ Why do we need Sewage Treatment? ▪ What is Sewage Treatment? ▪ What does Sewage Treatment involve? ❖ Levels of Waste Water Treatment ▪ Preliminary Treatment ▪ Primary Treatment ▪ Secondary Treatment ▪ Tertiary/ Advanced Treatment ❖ Other Process Required after Water Treatment
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Origins of sewage Sewage is created by residential‚ institutional‚ and commercial and industrial establishments and includes household waste liquid from toilets‚ baths‚ showers‚ kitchens‚ sinks and so forth that is disposed of via sewers. In many areas‚ sewage also includes liquid waste from industry and commerce. The separation and draining of household waste into grey water and black water is becoming more common in the developed world‚ with grey water being permitted to be used for watering
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primarily from a combination of primary‚ secondary‚ and tertiary sewage sludges. Biosolids do not contain the coarse grit and screenings removed from raw wastewater during preliminary treatment steps or ash generated from incineration of sewage sludge. Another type of biosolids may be derived from domestic septage‚ the solid or liquid material removed from septic systems‚ portable toilets‚ and other systems that receive only domestic sewage. However‚ since all sludges and biosolids contain potentially
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SEWAGE TREATMENT Sewage is a mixture of domestic and industrial wastes. It is more than 99% water‚ but the remainder contains some ions‚ suspended solids and harmful bacteria that must be removed before the water is released into the sea. The treatment of wastewater is divided into three phases: pretreatment‚ primary treatment and secondary treatment. Pretreatment Large solids (i.e. those with a diameter of more than 2cm) and grit (heavy solids) are removed by screening. These are disposed of in
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Sewage treatment plan Sewage treatment is the process of removing contaminants from waste water and household sewage‚ both run off (effluents)‚ domestic‚ commercial and institutional. It includes physical‚ chemical‚ and biological processes to remove physical‚ chemical and biological contaminants. Its objective is to produce an environmentally safe fluid waste stream (or treated effluent) and a solid waste (or treated sludge) suitable for disposal or reuse (usually as farm fertilizer). Origins
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and valuable resource. While industrial growth and unplanned water utilization for agricultural use have depleted ground water levels in many parts of India‚ the growth of urban clusters have brought pressure on available water. Increasing levels in sewage and industrial effluents have created the threat of pollution. Against this context of growing concerns about water‚ its recycling becomes important‚ for beneficial purposes such as agricultural and landscape irrigation‚ industrial processes‚ reuse
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Preface Sewage is water that carried waste‚ and also known as wastewater that to be removed to preserve the quality of our environment of Malaysian rivers‚ streams and coasts. Sewage can be characterised in chemical‚ physical‚ and biological. The main physical‚ chemical and biological elements of domestic sewage is more than 99% water and is characterised by volume of flow‚ physical condition‚ chemical composition and the bacteria organisms that it contains. (A. Mason‚ et.al‚ 2013). Sewage treatment
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indicates the presently sewered zones of the municipality A and Band the places where they discharge into the sea and the harbor. The neighborhoods have been named A‚ B‚ C‚ etc. These sewer discharge the wastewater of about 45‚000 inhabitants plus sewage from public and commercial sector. Most of these inhabitants live in poblacion in the center of the municipality. In this center also hotels‚ government buildings‚ workshops‚ banks‚ hospitals‚ schools are found. A serious problem is the pollution
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All surface water and some groundwaters require treatment prior to consumption to ensure that they do not represent a health risk to the user. Health risks to consumers from poor quality water can be due to microbiological‚ chemical‚ physical or radioactive contamination. However‚ microbiological contamination is generally the most important to human health as this leads to infectious diseases which affect all populations groups‚ many of which may cause epidemics and can be fatal. Chemical contamination
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Effect of domestic sewage pollution Domestic sewage pollution is the pollution caused to the earth by domestic use. It contain of sewage originating primarily from kitchen‚bathroom‚ and laundry sources and also waste from food preparation‚ dishwashing‚ garbage‚ toilets‚ baths‚ showers‚ and sinks. Sewage is the term used for wastewater that often contains faeces‚ urine and laundry waste. Sewage disposal is a major problem in developing countries as many people in these areas don’t have access to
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