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Sulphur dioxide converter and pollution arrester system
sent to the scrubbing solution. Gases left after the scrubbing process are treated to remove iodides and are filtered and passed into the atmosphere.
4420320 METHOD OF BIOLOGICALLY DRYING WASTE MATERIAL Randolp Hartmann, Helmut Schriewer, Karlsruhe, Federal Republic Of Germany assigned to Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft
4419331 SULPHUR DIOXIDE CONVERTER AND POLLUTION ARRESTER SYSTEM
A method of producing soil conditioners from waste material, and of utilizing the internal energy thereof, while reducing the volume of the waste material at the same time, is disclosed in which initially compacts of a refuse-sludge mixture are subjected to intense rotting whereby the water content thereof is reduced from an initial value of about 50 to 60 percent to about 30 percent, preferably 20 percent, and whereby the compacts become dried and storable. The dried and storable compacts are ground or screened, or both, with the screened out fine fraction being directly usable as a soil conditioner, and then the ground or screened, or both, compacts are thermally treated by one of low temperature carbonization and combustion.
Victor H Montalvo assigned to Waiters Michael F
4421648 APPARATUS AND A METHOD FOR BIOLOGICAL TREATMENT OF WASTE WATERS
A sulphur dioxide converter and pollution arrester system which involves the treatment of smoke and/or contaminated air emanating from a combustion area by passage through a zone achieving turbulence into a water spray contained first treating chamber. The turbulence zone, into which an atomized catalyst is introduced, serves to create a longer path for cooling as well as increased centrifugal motion to the solid particles in the contaminated air and also the formation of sulphur trioxide. In other words, the arrangement is such that pollution arresting action is provided in the form of slinging resulting from tangential directional movement and, when combining with the water spray in the first treating chamber, the ultimate formation of sulphuric acid. Subsequently, the contaminated air, containing amounts of sulphurous and sulphuric acids, passes through a second treating chamber, where airflow throughout the system is occasioned by action at the outlet end, such as the vacuum created by a flue and not by independent mechanical means. The arrangement serves to a two-fold purpose, i.e. to minimize or arrest pollution and to convert sulphur dioxide, a component of high sulphur coal, into commercially valuable sulphuric acid.
Ferdinan Besik, Mississauga, Ontario, Canada
i (.
An apparatus and a method for biological treatment of waste waters achieving biological oxidation of organic matter, biological nitrification and denitrification of nitrogenous compounds and biological removal of phosphorus and clarification of the treated waste water in a single reaction tank in a single suspended growth sludge system without the use of traditional compressors, mixers, recirculation pumps, piping and valving and without the use of the traditional clarifier. iii
4420320 METHOD OF BIOLOGICALLY DRYING WASTE MATERIAL Randolp Hartmann, Helmut Schriewer, Karlsruhe, Federal Republic Of Germany assigned to Industrie-Werke Karlsruhe Augsburg Aktiengesellschaft
4419331 SULPHUR DIOXIDE CONVERTER AND POLLUTION ARRESTER SYSTEM
A method of producing soil conditioners from waste material, and of utilizing the internal energy thereof, while reducing the volume of the waste material at the same time, is disclosed in which initially compacts of a refuse-sludge mixture are subjected to intense rotting whereby the water content thereof is reduced from an initial value of about 50 to 60 percent to about 30 percent, preferably 20 percent, and whereby the compacts become dried and storable. The dried and storable compacts are ground or screened, or both, with the screened out fine fraction being directly usable as a soil conditioner, and then the ground or screened, or both, compacts are thermally treated by one of low temperature carbonization and combustion.
Victor H Montalvo assigned to Waiters Michael F
4421648 APPARATUS AND A METHOD FOR BIOLOGICAL TREATMENT OF WASTE WATERS
A sulphur dioxide converter and pollution arrester system which involves the treatment of smoke and/or contaminated air emanating from a combustion area by passage through a zone achieving turbulence into a water spray contained first treating chamber. The turbulence zone, into which an atomized catalyst is introduced, serves to create a longer path for cooling as well as increased centrifugal motion to the solid particles in the contaminated air and also the formation of sulphur trioxide. In other words, the arrangement is such that pollution arresting action is provided in the form of slinging resulting from tangential directional movement and, when combining with the water spray in the first treating chamber, the ultimate formation of sulphuric acid. Subsequently, the contaminated air, containing amounts of sulphurous and sulphuric acids, passes through a second treating chamber, where airflow throughout the system is occasioned by action at the outlet end, such as the vacuum created by a flue and not by independent mechanical means. The arrangement serves to a two-fold purpose, i.e. to minimize or arrest pollution and to convert sulphur dioxide, a component of high sulphur coal, into commercially valuable sulphuric acid.
Ferdinan Besik, Mississauga, Ontario, Canada
i (.
An apparatus and a method for biological treatment of waste waters achieving biological oxidation of organic matter, biological nitrification and denitrification of nitrogenous compounds and biological removal of phosphorus and clarification of the treated waste water in a single reaction tank in a single suspended growth sludge system without the use of traditional compressors, mixers, recirculation pumps, piping and valving and without the use of the traditional clarifier. iii