Disposal sewage

Enzymes are used in baking, cheese manufacture, wine-making, brewing and distillation, pharmaceuticals, leather tanning, paper manufacture, adhesives, sewage disposal, animal feeds and in detergents. 

Natural Waters. Many water systems have a natural tendency to produce foam upon agitation. The presence of poUutants exacerbates this problem. This was particularly severe when detergents contained surfactants that were resistant to biodegradation. Then, water near industrial sites or sewage disposal plants could be covered with a blanket of stable, standing foam (52,59). However, surfactant use has switched to biodegradable molecules, which has gready reduced the incidence of these problems. 

There may be many types of the drives in an industry, particularly when it is a process industry. The most common drives are fans, pumps, and compressors etc., employed for the various utilities, storage and process activities of the plant. The plant may be chemical or a petrochemical, water treatment or sewage disposal, paper and pulp unit or even a crane or a hoist application. 

Dimethylsilicone fluids are used extensively as antifoams although the concentration used in any one system is normally only a few parts per million. They are useful in many chemical and food production operations and in sewage disposal. 

Temperature Measurement for Natural, Waste and Potable Waters and other items of interest in the Water and Sewage Disposal Industry, 1986... 

Abwasser, n. waste water, waste liquor specif., sewage. anlage, /. sewage disposal plant, leitung, /. drain. 

The control of drainage and sewerage systems and of sewage disposal is governed by federal, state, county and city regulations and varies depending on the specific area. 

Lapointe BE, O Connell JD, Garrett GS (1990) Nutrient couplings between on-site sewage disposal systems, ground waters, and nearshore surface waters of the Florida Keys. Biogeochem 10 289-307... 

In addition, anaerobic biodegradation of PEGs with Mns up to 20,000 was reported approximately at the same time in 1983 by three groups (10-12), Anaerobic digestion is also a useful process in sewage disposal systems and the studies on anaerobic metabolism of PEG are important to learning the fate of this compound in ecosystem. Research on this field is in its early stage, and further extensive studies remain to be done in the future. 

These considerations are important in regard to different systems such as paints, cements, adhesives, photographic products, water purification, sewage disposal, emulsions, chromatography, oil recovery, paper and print industry, microelectronics, soaps and detergents, catalysts, and biological systems (such as cell, virus). In some... 

Tomlinson T.G., A.G. Boon, and C.N.A. Trotman (1966). Inhibition of nitrification in activated sludge processes of sewage disposal. J. Appl. Bacteriol. 29 266-291. 

Buffer action is especially important in biochemistry and analytical chemistry, as well as in many large-scale processes of applied chemistry. Examples of the latter inclade the manufacture of photographic materials, electroplating, sewage disposal, agricultural chemicals, and leather products. 

Sewage disposal Soil conditioning Sugar refining Water clarification Water evaporation control Water repellency Wetting... 

Montgomeiy W., 1998. Strategic Sewage Disposal Scheme, Environmental Impact Assessment Study, Technical Note 4 (Final Version) Detailed Risk Assessment, Agreement No. CE52/ 95. Environmental Protection Department, The HKSAR Government, October 1998. 

Sodium hypochlorite is employed as a disinfectant and deodorant in dairies, creameries, water supplies, sewage disposal, and households. It is also used as bleach in laundries. As a bleaching agent, it is very useful for cotton, linen, jute, rayon, paper pulp, and oranges. 

The direct method for sewage disposal was originally developed for use on space vehicles where the hydrogen would be transduced in fuel cells to on-board electricity. The C02 evolved would be used for growing plants on board. 

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