FIELD: waste water treatment.
SUBSTANCE: fertilized sludge is first added to suspension at stirring and heating. To homogenized mixture is then added water-soluble ferrous salt and alkali agent to pH 9-10. Process is carried out for 25-30 min to achieve heating temperature 50-60оС at the end of the process. Finally, mixture in reactor is bubbled with air.
EFFECT: reduced expenses on chemical stabilization of galvanic sludge suspensions and lowered toxicity of galvanic sludge fertilization products.
2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR CHEMICAL STABILIZATION OF GALVANIC SLUDGES BEING FOR LONG TIME ON STORAGE | 2005 |
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RU2282598C1 |
| FERRITIZATION-INVOLVING METHOD OF STABILIZING ELECTROPLATING SLUDGES | 1996 |
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RU2116978C1 |
| METHOD OF PURIFICATION OF THE WASTE WATERS OF THE GALVANIC PRODUCTIONS WITH USAGE OF THE FERTILIZED GALVANOSLIME | 2005 |
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| METHOD OF PURIFYING FLUSHING EFFLUENTS FROM ZINC IONS | 2019 |
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| METHOD FOR REDUCING EMISSION INTO AQUATIC MEDIUM OF CHEMICAL ELEMENTS FROM GALVANIC SLUDGE | 2020 |
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| METHOD OF COMPLEX PROCESSING OF WASTEWATER GALVANIC PRODUCTION | 2018 |
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RU2674206C1 |
| SEWAGE PURIFICATION FROM HEAVY METALS IONS | 1992 |
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RU2060962C1 |
| METHOD FOR REMOVING HEAVY METAL IONS FROM CONCENTRATED PROCESS SOLUTIONS AND WASTE WATER | 1994 |
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RU2082681C1 |
| METHOD OF PRODUCING FERROMAGNETIC ADSORBENT | 0 |
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SU1787521A1 |
| METHOD OF TREATING HYDROXIDE SEDIMENT CONTAINING HEAVY METALS | 0 |
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SU1549925A1 |
