SU340626A1 - The method of dry neutralization of acid waste water - Google Patents
The method of dry neutralization of acid waste waterInfo
- Publication number
- SU340626A1 SU340626A1 SU1415492A SU1415492A SU340626A1 SU 340626 A1 SU340626 A1 SU 340626A1 SU 1415492 A SU1415492 A SU 1415492A SU 1415492 A SU1415492 A SU 1415492A SU 340626 A1 SU340626 A1 SU 340626A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- neutralization
- waste water
- acid waste
- dry neutralization
- dry
- Prior art date
Links
- 230000005591 charge neutralization Effects 0.000 title description 9
- 230000001264 neutralization Effects 0.000 title description 9
- 238000006386 neutralization reaction Methods 0.000 title description 9
- 239000002351 wastewater Substances 0.000 title description 4
- 239000002253 acid Substances 0.000 title description 2
- 238000000034 method Methods 0.000 description 6
- 239000002699 waste material Substances 0.000 description 5
- 230000002378 acidificating Effects 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium monoxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 230000003472 neutralizing Effects 0.000 description 3
- 239000010802 sludge Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N AI2O3 Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910000604 Ferrochrome Inorganic materials 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N Sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001948 sodium oxide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- ZEFWRWWINDLIIV-UHFFFAOYSA-N tetrafluorosilane;dihydrofluoride Chemical compound F.F.F[Si](F)(F)F ZEFWRWWINDLIIV-UHFFFAOYSA-N 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Description
Изобретение относитс ж области очистки сточных ВОД и может « пользоватьс в химической и других отрасл х промышленности дл очистки кислых сточных вод.The invention relates to the field of wastewater treatment and can be used in the chemical and other sectors of the industry for the treatment of acidic wastewater.
Известен способ сухой нейтрализации кислых сточных 1ВОД отходом металлургического производства - феррохромовым олаком, который в качестве нейт|рализующего реагента содержит окись кальци .A known method for the dry neutralization of acid waste 1VOD by metallurgical production waste — ferrochrome olac, which contains calcium oxide as a neutralizing reagent.
Однако такой способ нейтрализации весьма длителен.However, this method of neutralization is very long.
С целью ИНтенсификации процесса предложено сухую нейт рализаци.ю кислых сточных вод вести красным п лавдом - отходом глиноземного производатва. Красный шлам как нейтрализующий агент содержит окись кальци , а также необходимое количество окиси натри , уокар ющей процесс нейтрализации. В результате скорость .процесса нейтрализации значительно повышаетс . При нейтрализации феррохромовым шламом длительность процесса составл ет 48 час, а при нейтрализацииFor the purpose of the process Intensification, it has been proposed to dry neutralize acidic wastewater with a red lead — a waste of alumina production. Red mud as a neutralizing agent contains calcium oxide, as well as the required amount of sodium oxide, which repeats the neutralization process. As a result, the speed of the neutralization process is greatly increased. When neutralizing with ferrochrome sludge, the duration of the process is 48 hours;
красным шлаМом - 1,5-2,0 час. Расход красного 1шлама на нейтрализацию в 2-3 раза меньше, чем феррохромового шламаthe red slag is 1.5-2.0 hours. Red sludge consumption for neutralization is 2-3 times less than ferrochromic sludge
Пример. Исходна кисла вода с рН 1 содержит свободную кремнефтористоводородную кислоту с концентрацией F 18,75 г/л и фосфорную кислоту с концентрацией РоОб 6,7 г/л. В ВОДУ внос т 120 кг/л красного шлама, перемешивают в течение 30 мин « отстаивают . После 1,5-2,0 час отстаивани рН 1ВОДЫ достигает 7,0.Example. The initial acidic water at pH 1 contains free fluorosilicic acid with an F concentration of 18.75 g / l and phosphoric acid with a RoOb concentration of 6.7 g / l. 120 kg / l of red mud are introduced into WATER, stirred for 30 minutes and then settled. After 1.5-2.0 hours of settling, the pH of the water reaches 7.0.
Процесс нейтрализации эффективно осуществл етс нри температурах 20-70°С.The neutralization process is effectively carried out at temperatures of 20-70 ° C.
Предмет изобретени Subject invention
Способ сухой нейтрализации кислых сточных вод кальцийсодержашими отходами производства , отличающийс тем, что, с целью интенси|фикации процесса, нейтрализацию ведут красным шламом - отходом глиноземного производства.The method of dry neutralization of acidic wastewater with calcium-containing production waste, characterized in that, in order to intensify the process, neutralization is carried out with red mud - waste of alumina production.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU340626A1 true SU340626A1 (en) |
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