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Treatment process of acid wastewater in titanium dioxide production
The invention discloses a treatment process of acid wastewater in titanium dioxide production. The treatment process comprises the following steps: pumping the acid wastewater into a neutralizing tank by using a pump; pumping limestone powder slurry and lime water into the neutralizing tank through a pump to neutralize the acidic wastewater to a pH value of 6-8; and feeding the waste water into a thickening tank for thickening, carrying out filter pressing on the thickened waste water through a high-pressure rapid filter press, conveying the waste residue red gypsum obtained after filter pressing to a rotary kiln for drying, and controlling the water content of the red gypsum to be 12-18%. According to the treatment process of the acid wastewater in titanium dioxide production, neutralization treatment is carried out through the arranged sealing tank, then waste gas generated in the red gypsum drying process is treated through cooperation of the lime water spraying tower and the light alkali absorption tower, pollution of gas to air can be reduced, waste gas generated in the red gypsum drying process is treated through cooperation of the lime water spray tower and the light alkali absorption tower, and air pollution caused by gas can be reduced.
本发明公开了一种钛白粉生产中酸性废水的处理工艺，包括如下步骤：将酸性废水用泵抽至中和罐内；再通过泵向中和罐内泵入石灰石粉浆料和石灰水，将酸性废水中和到PH值6‑8；再将废水放料到浓密池浓密，然后再通过高压快速压滤机对浓密后的废水进行压滤，将压滤后得到的废渣红石膏输送至回转窑炉进行烘干，并控制红石膏的含水量在12‑18％。本发明一种钛白粉生产中酸性废水的处理工艺，该废水处理工艺，通过设有的密封罐进行中和处理，然后再通过石灰水喷淋塔和淡碱吸收塔配合对红石膏烘干过程产生的废气进行处理，能够减小气体对空气的污染，通过石灰水喷淋塔和淡碱吸收塔配合对红石膏烘干过程产生的废气进行处理，能够减小气体对空气的污染。
Treatment process of acid wastewater in titanium dioxide production
The invention discloses a treatment process of acid wastewater in titanium dioxide production. The treatment process comprises the following steps: pumping the acid wastewater into a neutralizing tank by using a pump; pumping limestone powder slurry and lime water into the neutralizing tank through a pump to neutralize the acidic wastewater to a pH value of 6-8; and feeding the waste water into a thickening tank for thickening, carrying out filter pressing on the thickened waste water through a high-pressure rapid filter press, conveying the waste residue red gypsum obtained after filter pressing to a rotary kiln for drying, and controlling the water content of the red gypsum to be 12-18%. According to the treatment process of the acid wastewater in titanium dioxide production, neutralization treatment is carried out through the arranged sealing tank, then waste gas generated in the red gypsum drying process is treated through cooperation of the lime water spraying tower and the light alkali absorption tower, pollution of gas to air can be reduced, waste gas generated in the red gypsum drying process is treated through cooperation of the lime water spray tower and the light alkali absorption tower, and air pollution caused by gas can be reduced.
本发明公开了一种钛白粉生产中酸性废水的处理工艺，包括如下步骤：将酸性废水用泵抽至中和罐内；再通过泵向中和罐内泵入石灰石粉浆料和石灰水，将酸性废水中和到PH值6‑8；再将废水放料到浓密池浓密，然后再通过高压快速压滤机对浓密后的废水进行压滤，将压滤后得到的废渣红石膏输送至回转窑炉进行烘干，并控制红石膏的含水量在12‑18％。本发明一种钛白粉生产中酸性废水的处理工艺，该废水处理工艺，通过设有的密封罐进行中和处理，然后再通过石灰水喷淋塔和淡碱吸收塔配合对红石膏烘干过程产生的废气进行处理，能够减小气体对空气的污染，通过石灰水喷淋塔和淡碱吸收塔配合对红石膏烘干过程产生的废气进行处理，能够减小气体对空气的污染。
Treatment process of acid wastewater in titanium dioxide production
一种钛白粉生产中酸性废水的处理工艺
LIANG ZHONGJUN (author) / WU WUJI (author)
2021-04-20
Patent
Electronic Resource
Chinese
IPC:
C02F
Behandlung von Wasser, Schmutzwasser, Abwasser oder von Abwasserschlamm
,
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
/
B01D
SEPARATION
,
Trennen
/
C01F
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
,
Verbindungen der Metalle Beryllium, Magnesium, Aluminium, Calcium, Strontium, Barium, Radium, Thorium oder der Seltenen Erden
/
C04B
Kalk
,
LIME
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