FIELD: chemistry.
SUBSTANCE: method of purifying sewages from sulphate-ions includes the neutralisation of sewage water and introduction of alumina cement. Before the introduction of cement sewage water is neutralised by lime milk to pH 10.5-12. The cement is introduced in the form of a 5÷12.5% water suspension and a flocculent based on highly-polymerised polyacrylamide is added.
EFFECT: invention makes it possible to simplify the technology and reduce the time of purification to the concentration of sulphate-ions, established for water discharge in reservoirs for fishery purposes.
3 tbl, 3 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD FOR WASTE WATER TREATMENT FROM SULFATE IONS AND HEAVY METALS | 2019 |
|
RU2747974C2 |
| METHOD FOR WASTE WATER PURIFICATION FROM HEAVY METAL IONS | 2019 |
|
RU2751783C2 |
| PILOT UNIT FOR TREATMENT OF WASTE WATER FROM HEAVY METAL IONS, SULPHATE- AND NITRITE IONS | 2018 |
|
RU2698887C1 |
| METHOD FOR PURIFICATION OF MULTICOMPONENT INDUSTRIAL WASTEWATER CONTAINING ZINC AND CHROMIUM | 2022 |
|
RU2792510C1 |
| METHOD OF WASTE WATER PURIFICATION FROM SULFATE-IONS | 0 |
|
SU872462A1 |
| METHOD OF TREATING DAIRY INDUSTRY WASTE WATER | 2009 |
|
RU2414435C1 |
| FILLING MIXTURE COMPOSITION | 2019 |
|
RU2739003C1 |
| METHOD OF PURIFYING SULPHATE-CONTAINING EFFLUENTS | 0 |
|
SU1330078A1 |
| METHOD AND APPARATUS FOR PURIFYING ACID MINE WATER | 2023 |
|
RU2822699C1 |
| WASTE WATER NEUTRALIZATION AND CLEANING PROCESS | 2000 |
|
RU2174107C1 |
