FIELD: waste water treatment.
SUBSTANCE: invention relates to technology of treating waste waters polluted with suspended stone particles and ensures obtaining product that can be used as coagulant. In a waste water treatment process including coagulation and precipitation of suspended materials, part of settled stone slurry is separated , mixed with phosphoric acid and/or its soluble salts on the basis of 5-10 kg per 100 L stone slurry, kept until gas evolution ends, and thus obtained product is placed in water being treated in amount 1-3 ml per 1 L water.
EFFECT: accelerated precipitation of suspended stone particles and simplified process.
2 tbl, 32 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR PROCESSING OF EXHAUSTED SOLUTIONS COMPRISING COMPOUNDS OF HEXAVALENT CHROMIUM | 1996 |
|
RU2110486C1 |
| METHOD OF PURIFYING ACIDIC SLIGHTLY MUDDY MINE AND UNDERDUMP WATER | 2008 |
|
RU2386592C2 |
| CLARIFIED WATER PRODUCTION PROCESS | 2004 |
|
RU2294794C2 |
| METHOD OF TREATING DAIRY INDUSTRY WASTE WATER | 2009 |
|
RU2414435C1 |
| METHOD OF TREATING SPENT CONCENTRATED COPPER-AMMONIA SOLUTIONS | 1996 |
|
RU2115619C1 |
| METHOD OF CLEANING ORE CONCENTRATION SEWAGE FROM SUSPENDED MATTER | 0 |
|
SU1758026A1 |
| METHOD OF ELECTROPLATING PRODUCTION WASTE ACID SOLUTION UTILIZATION | 1992 |
|
RU2069240C1 |
| METHOD FOR PURIFYING OF HIGH-CONCENTRATED ALKALINE SEWAGE WATER | 2003 |
|
RU2234463C1 |
| METHOD OF THE LOCAL REACTANT PURIFICATION OF THE SPENT CONCENTRATED SOLUTIONS FROM IONS OF THE HEAVY METALS AND MANGANESE | 2005 |
|
RU2299866C2 |
| ANOLYTE AS AN ADDITIVE FOR PURIFYING WASTE WATER | 2018 |
|
RU2775602C1 |
