基于响应面法的煤化工废水中褐煤沉降特性分析

doi:10.19286/j.cnki.cci.2021.11.043

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摘要为探究褐煤在煤化工废水环境中的沉降特性，以响应面法为基础对试验进行设计，研究了不同煤水比（X1）与絮凝剂添加量(X2)2个因素对褐煤煤泥水沉降速度的影响。根据多因素中正交实验设计原理，以清水组为参照组，废水组为实验组共设计了26组实验，依据回归分析确定各研究因素对褐煤在废水中的沉降速度的影响，并将煤粉沉降速率作为响应面和等值线。研究结果表明，对褐煤沉降速率的影响显著性顺序为X1>X2>X1X2；最佳沉降速率条件是煤水比为50 g/L、絮凝剂用量为320 g/t；在等条件下，废水环境褐煤煤泥水的沉降速度要快于清水环境，模型方程的拟合效果要略差，且相应因素的影响效果的显著性也略差，表明废水中的组分具有促进褐煤颗粒沉降的作用。

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	高歆雨
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关键词 ：褐煤, 沉降, 废水, 响应面法

Abstract： In order to explore the settling characteristics of lignite in coal chemical wastewater environment, the experiment was designed based on response surface method, the effects of different coal-water ratio (X1) and flocculant addition (X2) on the settling velocity of lignite slime water were studied. According to the principle of orthogonal experimental design in multi factors, a total of 26 groups of experiments were designed with clear water group as the reference group and wastewater group as the experimental group, the influence of various research factors on the settling velocity of lignite in wastewater was determined according to regression analysis, the settling velocity of pulverized coal was taken as response surface and isoline. The results show that the significant order of influence on the settling velocity of lignite is X1>X2>X1X2; and the optimum settling velocity conditions are coal-water ratio of 50 g/L and flocculant dosage of 320 g/t; under the same conditions, the settling velocity of lignite slime water in wastewater environment is faster than that in clean water environment, the fitting effect of the model equation is slightly worse, and the significance of the effect of the corresponding factors is also slightly lower, which shows that the components in wastewater can promote the sedimentation of lignite particles.

Key words： lignite settlement wastewater response surface method

基金资助:北京市大学生创新训练项目项目资助（202011413099）

通讯作者: 涂亚楠（ 1984— ），男，山东潍坊人，副教授。

作者简介: 高歆雨（ 1999— ），女，黑龙江人，本科生。

引用本文:

高歆雨，田颖，孙海娣，陈万六，杨世全，涂亚楠. 基于响应面法的煤化工废水中褐煤沉降特性分析[J]. 煤炭与化工, 2021, 44(11): 146-150. Gao Xinyu, Tian Ying, Sun Haidi, Chen Wanliu, Yang Shiquan, Tu Yanan. Analysis of lignite settling characteristics in coal chemical wastewater based on response surface methodology. CCI, 2021, 44(11): 146-150.

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