摘要:
Die Erfindung betrifft ein Verfahren zur Behandlung von Gülle, bei welchem die thixotropen Eigenschaften der Gülle durch Zusatz von Hemizellulosen und Zucker enthaltendem Calzium- oder Magnesiumlignosulfonat geändert werden und die derart aufbereitete, zum Teil desodorierte Gülle in mehreren Teilmengen auf ein organisches oder anorganisches Sorptionsmaterial aufgebracht wird, das zwischen den einzelnen Teilmengenzufuhren durchgemischt und durchgelüftet wird. Nach Aufbringen der gewünschten Güllemenge wird das entstandene Gemisch mit das Pflanzenwachstum günstig beeinflussenden Stoffen angereichert, und dieses Gemisch dient als Düngemittel mit geregelter Nährstoffdesorption, bestehend aus (nach Gewicht) 10 bis 50 Teilen geschroteten Abfällen auf Phytomassebasis, 30 bis 60 Teilen mit 1 bis 20 Teilen Calzium- oder Magnesiumlignosulfonat aufbereiteter Gülle, 0 bis 40 Teilen Kalkstein, 0 bis 20 Teilen Ammoniumsulfat und 0 bis 20 Teilen Phosphaten.
摘要:
A process for the utilisation of solid paper mill waste comprises introducing earthworms and/or earthworm cocoons into a mass of the waste and allowing the worms to mature and breed in the waste until it is converted into a friable, soil-like material. The earthworms and the friable, soil-like material may be subsequently separated; the material is suitable for use as a horticultural compost.
摘要:
A process for the utilisation of solid paper mill waste comprises introducing earthworms and/or earthworm cocoons into a mass of the waste and allowing the worms to mature and breed in the waste until it is converted into a friable, soil-like material. The earthworms and the friable, soil-like material may be subsequently separated; the material is suitable for use as a horticultural compost.
摘要:
A process for making defibered pulp material comprising the steps of treating fibrous ligno-cellulosic material with aqueous nitric acid (10,17) having an HNO 3 concentration of about 0.15 to 9.0 wt.% and containing aluminium sulphate in an amount of about 0.8 to 1.3 parts per each 10 parts by weight of HN0 3 , or to alternatively use for grassy fibrous materials nitrate salts such as NaN0 3 or KN0 3 or NH 4 NO 3 . so as to nitrate ligneous component of said material; and thereafter defibering directly, (15,21) or treating the nitrated ligno-cellulosic material with alkali to separate the ligneous component from the cellulosic pulp, and, optionally, recombining a part or all of the ligneous component with the cellulosic pulp. (Figure 1).
摘要翻译:一种制备脱纤维浆料的方法,包括以硝酸浓度为约0.15至9.0重量%的硝酸水溶液(10,17)处理纤维状木质纤维素材料并含有约0.8至1.3的硫酸铝的步骤 每10份重HNO 3的份数,或替代地用于草纤维材料硝酸盐如NaNO 3或KNO 3或NH 4 NO 3,以便所述材料的硝酸盐木质组分; 然后直接进行脱水,(15,21)或用碱处理硝化的木质纤维素材料以将木质组分与纤维素浆料分离,并且任选地使木质组分的一部分或全部与纤维素浆料重新组合。
摘要:
The invention relates to a process for treating bleaching liquors from pulping processes based on organic acids. The process is characterized in that inorganic acid, such as nitric acid, phosphoric acid and/or sulphuric acid, is added into a bleaching liquor obtained from the bleaching or a stage closely associated with bleaching, whereby organic acids contained in the bleaching liquor are released into the bleaching liquor. The organic acids are then separated from the bleaching liquor and recycled to the cooking stage to be used as cooking chemicals. The nitrogen-, phosphor- and/or sulphur-containing product thereby produced, from which organic acids have been separated, is recovered to be used as a fertilizer or as raw material for a fertilizer.
摘要:
A process is disclosed for the chemical and physical treatment of an aqueous suspension having from 5% to 30% of dry content of residuals from alimentary or industrial use of pineapple, coconut, tamarind, bagasse, sorghum, corn, abaca or rice, and that of aquatic origin such as fresh white water-lily or the seashore vegetables varieties such as Posidonia, so to permit their use in the production of paper and board.
摘要:
The present invention relates to a method for producing a soil improvment material. According to the invention such a material is produced by the steps of mixing wood fiber slurries from paper mills and fly ash from fossil fuel power and heating plants and of further treating the material to obtain a packetable product. The wood fiber slurry is treated to become an almost gruel-like slurry and is pressed through a sieve belt press (4) to become considerably dewatered, down to a water content of about 20 %, after which the slurry is pre-mixed with fly ash, after which the main mixing is carried out to obtain homogenous lump-like particles, which are subjected to a size reduction process through screening or the product after the main mixing and a possible size reduction process is pelletized. The invention also relates to an apparatus (1) designed to carry out the method as well as a soil improvement material obtained according to the method and by means of the apparatus respectively.
摘要:
The present invention relatesto the treatment of various waste and side flows of pulp and paper industry. The flows are treated in view of utilizing each one of the flows in the best possible manner, whereby only commercially interesting end products are produced. It requires a novel way of dividing and/or fractionating the flows between incinerationand treatment in a bio refinery. The end products may be, for instance, one or more of ethanol, methanol, fertilizer etc.
摘要:
An improved process for enhancing the plant nutrient value of relatively low analysis organic waste material (e.g., sewage sludge) involves treating the waste material with an acid and base in a pipe-cross reactor. The process more particularly involves mixing the waste material with water to form a slurry (or initially taking the waste material as a slurry); pumping the slurry to a pipe-cross reactor for reaction with a base, acid, and water to form a melt; spraying the melt onto a recycling bed of fines in a granulator, and flashing off the water contained in the melt as steam; rolling the melt onto recycled fine particles in a granulator to form granulated particles; and drying these granulated particles to form an enhanced plant nutrient value composition (e.g., a fertilizer or soil conditioner having a greater "NPK" value than the original relatively low analysis organic waste material). The invention also includes fertilizers produced according to the improved process, which fertilizers are of the same size and shape and density of commonly used fertilizers. The method advantageously utilizes the heat generated by the exothermic acid-base reaction in the pipe-cross reactor to remove the approximately 80% water from sludge, thus saving large amounts of energy normally used in conventional drying or burning methods, while, at the same time, conserving the intrinsic values of the nutrients and humates contained in the sludge. In one embodiment, the process includes a method of disposing of spent acid from a hot dip galvanizing process or a steel pickling process involving incorporating the spent acid to maintain the low pH of a venturi scrubber used in the improved process.