RU1787961C
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Method of processing sewage slime
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SU1747399A1
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Method for processing precipitates of sewage
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SU1756291A1
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Method of dewatering and dehelminthization of sewage sludge in natural conditions
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SU1733395A1
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Method of cleaning sewage from pigments
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SU1763385A1
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Method for purification of sewage from textile plants
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SU1723045A1
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Boiler water treatment method
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SU1758009A1
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Method of cleaning sewage from dyes
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SU1756283A1
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Method of purification of water
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SU1611878A1
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Method of pretreating water
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SU1606606A1
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Water outlet from irrigation system
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SU1691326A1
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Method of processing sewage precipitates
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SU1643475A1
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Method of cleaning surface water
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SU1685878A1
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Method for purifying effluents in oxypropylcellulose production
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SU1629255A1
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Process for purification of effluents from sulfide dyes
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SU1712554A1
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Production well for water-bearing horizon polluted with oil products
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SU1640124A1
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Method of biological sewage cleaning and deposit treatment
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SU1587014A1
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Method of desalinating water
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SU1652725A1
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Unit of drive
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SU1590445A1
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Method of softening natural water
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SU1520019A1
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Method of purifying water from suspended matter
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