sufficient capacity to treat the increased sewage. The project deals with the design of the Sewage Treatment plant and its major components such screening chamber, grit chamber, skimming tank, sedimentation tank, secondary clarifier, active sludge tank and sludge drying beds. The project covers the 10.54 sq.km, 48 wards of Vellore Municipal Corporation for next 30 years and its increased population. Vellore City, the Head Quarters of the Vellore District is at a distance of 135 km West of Chennai and
processes continue to be developed to address the site constraints faced by municipal and industrial wastewater treatment facilities. One of these processes is activated sludge with suspended fixed-film packing, such as the Moving Bed Biofilm Reactor (MBBR). MBBRs incorporate benefits provided by both fixed film and activated sludge processes. The MBBR process is a continuous flow process which uses small high density polyethylene (HDPE) carrier elements to provide sites for active bacteria
domestic. 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). Using advanced technology it is now possible to re-use sewage effluent for drinking water, although Singapore is the only country to implement such technology on a production scale in its
settle out microorganisms from the activated sludge process. Activated Sludge Activated sludge is a biological process whereby oxygen is bubbled through the water, providing aeration. Microorganisms or "bugs" are suspended in the wastewater by the aeration. The mixture is known as "mixed liquor." The bugs breakdown the wastes to carbon dioxide and water. Final Clarifiers Final Clarifiers are also used to settle out microorganisms, or "bugs," from the activated sludge process. Clarifiers are usually
Wastewater Treatment 1. The Problem The principal objective of wastewater treatment is generally to allow human and industrial effluents to be disposed of without danger to human health or unacceptable damage to the natural environment. Irrigation with wastewater is both disposal and utilization and indeed is an effective form of wastewater disposal. However, some degree of treatment must normally be provided to raw municipal wastewater before it can be used for agricultural or landscape
Wastewater Quantity Estimation The flow of sanitary sewage alone in the absence of storms in dry season is known as dry weather flow (DWF). Quantity= Per capita sewage contributed per day x Population Sanitary sewage is mostly the spent water of the community draining into the sewer system. It has been observed that a small portion of spent water is lost in evaporation, seepage in ground, leakage, etc. Usually 80% of the water supply may be expected to reach the sewers.
Plant The WUPA Sewage Treatment Plant Abuja is designed for FCT to handle the waste generated by 700,000 Population Equivalent (PE) and expandable to 1,000,000 PE on an average domestic water requirement of 230l/c/d. The plant operates on the activated sludge process that relies on microbial population in mixed suspension to achieve the wastewater treatment. The WUPA sewage treatment plant performs its two main operations in the treatment process as follows: a) Unit Operations: This involves
6 Potato Wastewater Treatment Yung-Tse Hung and Howard H. Lo Cleveland State University, Cleveland, Ohio, U.S.A. Adel Awad and Hana Salman Tishreen University, Lattakia, Syria 6.1 INTRODUCTION In the past two decades, the potato industry has experienced rapid growth worldwide, accompanied by a staggering increase in the amount of water produced. It is estimated that the US potato industry alone generates about 1.3 Â 109 kg of wastes each year . Large volumes of wastewater and organic
treatment is carried out on parcels or "batches" of wastewaters. While most wastewater treatment processes are continuous flow, certain operations, such as vacuum filtration, involving as it does, storage of sludge, the addition of chemicals, filtration and removal or disposal of the treated sludge, are routinely handled as periodic batch operations. Wastewater treatment, however, can also be organized or categorized by the nature of the treatment process operation being used; for example, physical
COD in the effluent discharged to natural waters, meeting certain standards. Wastewater treatment plants are designed to function as "microbiology farms", where bacteria and other microorganisms are fed oxygen and organic waste. (Beetham uses activated sludge process) Wastewater is teaming with microbes. Many of which are necessary for the degradation and stabilization of organic matter and are beneficial. Downside, wastewater may also contain pathogenic or potentially pathogenic microorganisms.