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Method for comprehensively utilizing dilute sulfuric acid-containing wastewater
The invention discloses a method for comprehensively utilizing dilute sulfuric acid-containing wastewater, which comprises the following steps: (1) mixing the wastewater containing dilute sulfuric acid with limestone slurry to carry out neutralization reaction, and adding a flocculant to concentrate, thereby obtaining gypsum slurry, (2) carrying out impurity removal treatment on the gypsum slurryto obtain high-purity gypsum, (3) calcining the high-purity gypsum to obtain beta-type gypsum powder clinker, (4) cooling the beta-type gypsum powder clinker, and aging, and (5) carrying out ball-milling modification on the aged material obtained in the step (4) so as to obtain a beta-type gypsum powder finished product. By adopting the method, the dilute sulfuric acid-containing wastewater can beconverted into high-quality beta-type gypsum powder, the resource and high-value utilization of the dilute sulfuric acid-containing wastewater is realized, the enterprise benefit is favorably improved, and the national requirements on green industrial development, energy conservation and emission reduction are met.
本发明公开了一种综合利用含稀硫酸废水的方法，包括：(1)将含稀硫酸废水与石灰石浆混合进行中和反应，然后添加絮凝剂提浓，以便得到石膏浆料；(2)将所述石膏浆料进行脱杂处理，以便得到高纯石膏；(3)将所述高纯石膏进行煅烧，以便得到β型石膏粉熟料；(4)将所述β型石膏粉熟料冷却后进行陈化；(5)将步骤(4)得到的陈化后料进行球磨改性，以便得到β型石膏粉成品。采用该方法可以将含稀硫酸废水转化为高品质的β型石膏粉，实现了稀硫酸废水的资源化、高值化利用，有利于提升企业效益，满足国家对产业绿色发展、节能减排的要求的优点。
Method for comprehensively utilizing dilute sulfuric acid-containing wastewater
The invention discloses a method for comprehensively utilizing dilute sulfuric acid-containing wastewater, which comprises the following steps: (1) mixing the wastewater containing dilute sulfuric acid with limestone slurry to carry out neutralization reaction, and adding a flocculant to concentrate, thereby obtaining gypsum slurry, (2) carrying out impurity removal treatment on the gypsum slurryto obtain high-purity gypsum, (3) calcining the high-purity gypsum to obtain beta-type gypsum powder clinker, (4) cooling the beta-type gypsum powder clinker, and aging, and (5) carrying out ball-milling modification on the aged material obtained in the step (4) so as to obtain a beta-type gypsum powder finished product. By adopting the method, the dilute sulfuric acid-containing wastewater can beconverted into high-quality beta-type gypsum powder, the resource and high-value utilization of the dilute sulfuric acid-containing wastewater is realized, the enterprise benefit is favorably improved, and the national requirements on green industrial development, energy conservation and emission reduction are met.
本发明公开了一种综合利用含稀硫酸废水的方法，包括：(1)将含稀硫酸废水与石灰石浆混合进行中和反应，然后添加絮凝剂提浓，以便得到石膏浆料；(2)将所述石膏浆料进行脱杂处理，以便得到高纯石膏；(3)将所述高纯石膏进行煅烧，以便得到β型石膏粉熟料；(4)将所述β型石膏粉熟料冷却后进行陈化；(5)将步骤(4)得到的陈化后料进行球磨改性，以便得到β型石膏粉成品。采用该方法可以将含稀硫酸废水转化为高品质的β型石膏粉，实现了稀硫酸废水的资源化、高值化利用，有利于提升企业效益，满足国家对产业绿色发展、节能减排的要求的优点。
Method for comprehensively utilizing dilute sulfuric acid-containing wastewater
综合利用含稀硫酸废水的方法
ZHU BEIPING (author) / YU LINGFEI (author) / LI YUN (author) / WANG CHAOMIN (author) / CHENG SHIXIONG (author) / LI DUNHUA (author) / HE WENMING (author) / LI CHAO (author) / ZHAO TIANPING (author) / XU ZHIJIE (author)
2020-11-20
Patent
Electronic Resource
Chinese
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