Surface area of one block or 18 particles, pore spaces Estimate the surface area of the one block Estimate the surface area of one of the 18 particles.
Rain that has a flamboyantly low pH, due to contact with atmospheric pollutants such as sulphuric oxides. The number of hydrogen atoms that are present determines this.
It is usually measured by titration with a standard solution of sodium hydroxide. Activated coal This is the most commonly used adsorption medium, produced by heating carbonaceous substances or cellulose bases in the absence of air. It has a very porous structure and is commonly used to remove organic matter and dissolved gases from water.
Its appearance is similar to coal or peat. Available in granular, powder or block form; in powder form it has the highest adsorption capacity.
Activated sludge Oxygen dependent biological process that serves to convert soluble organic matter to solid biomass, that is removable by gravity or filtration.
Active groups Really fixed ions bolted on to the matrix of an ion exchanger. Each active group must always have a counter-ion of opposite charge near itself. Adsorption Separation of liquids, gases, colloids or suspended matter from a medium by adherence to the surface or pores of a solid.
More info on adsorption Advanced oxidation process One of several combination oxidation processes. The processes can completely oxidise organic materials to carbon dioxide and water, although it is often not necessary to operate the processes to this level of treatment.
A wide variety of advanced oxidation processes are available: Advanced Wastewater Treatment Any treatment of sewage water that includes the removal of nutrients such as phosphorus and nitrogen and a high percentage of suspended solids.
Aerated lagoon A water treatment pond that speeds up biological decomposition of organic waste by stimulating the growth and activity of bacteria, which are responsible for the degradation. Aeration Technique that is used with water treatment that demands oxygen supply, commonly known as aerobic biological water purification.
Either water is brought into contact with water droplets by spraying or air is brought into contact with water by means of aeration facilities.
Air is pressed through a body of water by bubbling and the water is supplied with oxygen.
More info on aeration A tank that is used to inject air into water. Aerobic A process that takes place in the presence of oxygensuch as the digestion of organic matter by bacteria in an oxidation pond. Aerosol Very small liquid or solid particles dispersed in air.
Affinity The keenness with which an ion exchanger takes up and holds on to a counter-ion. Affinities are very much affected by the concentration of the electrolyte surrounding the ion exchanger. Agglomeration A process of bringing smaller particles together to form a larger mass.
Aggressive water Water that is soft and acidic and can corrode plumbing, pipes and appliances. Algae Single- or multi-celled organisms that are commonly found in surface water, such as duckweed. They produce their own food through photosynthesis.
The algae population is divided up into green algae and blue algae, of which the blue algae are very damageable to human health. Excessive algae growth may cause the water to have undesirable odours or tastes. Decay of algae diminishes oxygen supplies in the water.
Algal blooms Periods of enlarged algal growths that affect water quality.An Analysis of the Effects of Depth and Sediment Concentration on the Penetration of Light in Water. 1, words. 2 pages. An Analysis of Enzymes Such as Catalase as Large Protein Molecules That are Found in Living Cell. 2, words.
6 pages. A polychlorinated biphenyl (PCB) is an organic chlorine compound with the formula C 12 H 10−x Cl leslutinsduphoenix.comlorinated biphenyls were once widely deployed as dielectric and coolant fluids in electrical apparatus, carbonless copy paper and in heat transfer fluids..
Because of their longevity, PCBs are still widely in use, even though their manufacture has declined drastically since the s. Turbidity is caused by particles and colored material in water.
It can be measured relative to water clarity, or directly with a turbidity instrument such as a turbidimeter or turbidity sensor.
1. Publication of high quality, high impact, peer reviewed research papers.. 2. Asian Journal of Science and Technology (AJST) (ISSN: ) is an online International Journal published Monthly. 2. Fast dissemination of scientific findings by reducing lag time between 'submission to final publication' to maximum six (4) weeks..
3. The purpose of the research was to investigate the effect of suspended sediment concentration on remote sensing reflectance and depth of light penetration in the turbid water.
The penetration of the biological effects down the sediment beds was then investigated. EPS is composed of polymer materials such as polysaccharide, protein, and humic acid polymers that provide the important binding capacity of the hydrated matrix (Flemming et al., ).