TL;DR: What is Domestic Wastewater and Why Treat It and how is it used?
Abstract: Affordable and effective domestic wastewater treatment is a critical issue in public health and disease prevention around the world, particularly so in developing countries which often lack the financial and technical resources necessary for proper treatment facilities.
This practical guide provides state-of-the-art coverage of methods for domestic wastewater treatment and provides a foundation to the practical design of wastewater treatment and re-use systems. The emphasis is on low-cost, low-energy, low-maintenance, high-performance 'natural' systems that contribute to environmental sustainability by producing effluents that can be safely and profitably used in agriculture for crop irrigation and/or in aquaculture, for fish and aquatic vegetable pond fertilization. Modern design methodologies, with worked design examples, are described for waste stabilization ponds, wastewater storage and treatment reservoirs; constructed wetlands, upflow anaerobic sludge blanket reactors, biofilters, aerated lagoons and oxidation ditches.
This book is essential reading for engineers, academics and upper-level and graduate students in engineering, wastewater management and public health, and others interested in sustainable and cost-effective technologies for reducing wastewater-related diseases and environmental damage.
TL;DR: In this article, the most popular methods of sewage sludge management and associated unit operations and processes referring to them are presented, such as: reclamation and adaptation of lands to specific needs; plant cultivation not intended for consumption or for production of food; usage in agriculture, usage in building; recovery of phosphorus, rare earth metals or fats and usage in industry; producing combustible pellets, granulates or other usable materials such as absorbents; and storage on territory of treatment plant and landfills.
TL;DR: Sewage treatment and sewage treatment systems application of anaerobic digestion to sewage treatment design criteria of UASB reactors for sewage treatment performance as discussed by the authors, treating sewage pH value and stability in an an-aerobic digester sludge treatment post-treatment of uASB effluent.
Abstract: Sewage treatment and sewage treatment systems application of anaerobic digestion to sewage treatment design criteria of UASB reactors for sewage treatment performance of UASB reactors treating sewage pH value and stability in an anaerobic digester sludge treatment post-treatment of UASB effluent.
TL;DR: In this paper, a dynamic mathematical model describing main biochemical processes that take place within wastewater stabilization ponds is proposed, where mass balances for main microorganisms, nutrients, dissolved oxygen and biochemical demand of oxygen have been formulated.
Abstract: In this work, we propose a dynamic mathematical model describing main biochemical processes that take place within wastewater stabilization ponds. Mass balances for main microorganisms, nutrients, dissolved oxygen and biochemical demand of oxygen have been formulated. The wastewater biological treatment system under study is composed of two stages of oxygenated ponds in series. The first stage is aerobic oxygenated and the last one is facultative oxygenated. Global sensitivity analysis has been performed prior to the formulation of a parameter estimation problem, subject to the differential algebraic system describing the biological wastewater treatment system. Experimental data from a fruit juice plant have been collected throughout one year. Numerical results provide a deep insight on the complex relations among microorganisms, nutrients and organic matter concentration in wastewater treatment ponds.
TL;DR: In this paper, the authors investigated the effects of wastewater discharge on receiving waters conventional wastewater treatment processes process fundamentals microorganisms exploited in wastewater treatment microbial energy generation the kinetics of bacterial growth modelling and design of biological reactors nutrient removal from wastewaters operation and control of conventional systems waste stabilization ponds and aerated lagoons.
Abstract: Wastewater characteristics and the effects of its discharge on receiving waters conventional wastewater treatment processes process fundamentals microorganisms exploited in wastewater treatment microbial energy generation the kinetics of bacterial growth modelling and design of biological reactors nutrient removal from wastewaters operation and control of conventional systems waste stabilization ponds and aerated lagoons.