FIELD: waste water treatment.
SUBSTANCE: process comprises following stages: (i) treating waste water by way of evaporation in multi-unit evaporation apparatus to produce vaporous top fraction and liquid bottom fraction containing nonvolatile impurities and (ii) condensing at least part of vaporous top fraction into liquid stream, which is subjected to treatment consisting in distilling off volatile fractions to convert them into top cut containing volatile overflow organic material, and cleaned water in the form of bottom liquid stream.
EFFECT: created cleaned water stream, which can be reused in the process or be subjected to subsequent biological treatment to produce water pure enough to meet all environmental standards for surface water.
9 cl, 3 dwg, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD AND INSTALLATION FOR CONCENTRATING SPENT SULPHURIC ACID FROM NITRATION PROCESSES | 2007 |
|
RU2404917C2 |
| METHOD AND INSTALLATION FOR REGENERATION OF WASTE SULFURIC ACID FROM NITRATION PROCESSES | 2010 |
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| METHOD OF PURIFICATION OF THE WASTE OILS USING EXTRACTION BY DISSOLVENTS | 2002 |
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| METHOD OF TREATING AQUEOUS SOLUTIONS CONTAINING HYDROGEN SULFIDE, HYDROGEN CYANIDE, AND AMMONIA | 1991 |
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RU2078054C1 |
| METHOD OF AUTOMATICALLY CONTROLLING PROCESS OF EVAPORATION OF ELECTROLYTIC ALKALI IN MULTIPLE-EFFECT EVAPORATOR | 2001 |
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| MULTI-EFFECT COUNTER-FLOW EVAPORATING SYSTEM FOR CONCENTRATION OF ALUMINATE SOLUTION | 2002 |
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| EXTRACTION METHOD OF REMOVING IMPURITIES FROM MOTHER SOLUTION DURING SYNTHESIS OF CARBONIC ACID (VERSIONS) | 2004 |
|
RU2347773C2 |
| 0 |
|
SU252211A1 | |
| METHOD OF WASTE WATER PURIFICATION | 0 |
|
SU833551A1 |
