Journal of Textile Research ›› 2020, Vol. 41 ›› Issue (08): 81-87.doi: 10.13475/j.fzxb.20190406807

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Application of textile in evaporation treatment of saline wastewater

LIU Jie1,2, TONG Shenglu1,2, LI Xiaoduan1,2, LIU Liguo1,2, HE Jiahao3, LI Wenbin3(), XIONG Rihua1,2   

  1. 1. National Institute of Clean-and-Low-Carbon Energy, Beijing 102211, China
    2. State Key Laboratory of Water Resource Protection and Utilization in Coal Mining, Beijing 100011, China
    3. State Key Laboratory of Textile New Materials and Advanced Processing Technology in Hubei Province, Wuhan Textile University, Wuhan, Hubei 430200, China
  • Received:2019-04-23 Revised:2020-04-02 Online:2020-08-15 Published:2020-08-21
  • Contact: LI Wenbin E-mail:li780713@126.com

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Abstract:

Aiming at the problems such as complexity, low-efficiency, and high-cost in evaporation treatment of saline wastewater, textiles were used as the flow and evaporation carrier for saline wastewater, which are featured by high porosity, air permeability, fast moisture transfer and controllable photothermal conversion performance. Experiments were conducted to study the effects of the thickness, air permeability, color and nano-zirconium carbide finishing on the evaporation rate of saline wastewater. The results show that the evaporation rate of the saline wastewater on the fabric surface is increased by 400% compared to the natural state. The evaporation rate of the saline wastewater with a thickness of 0.48 mm fabric is increased by 63% compared to that of a 1.32 mm fabric. The evaporation rate of the fabric with air permeability 126.7 L/(s·m2) is 56.9% higher than that of a 53.9 L/(s·m2) fabric. Black fabrics have a 30.3% increase in promoting the saline wastewater evaporation compared to white fabrics. The evaporation rate of saline wastwater on surface of the white fabrics treated with nano-zirconium carbide is increased by 95.3% compared to the original fabric.

Key words: saline wastewater, evaporation rate, fabric thickness, fabric permeability, nano-zirconium carbide

CLC Number: 

  • TS199

Tab.1

Composition of coal chemical saline wastewater"

成分 质量浓度/
(mg·L-1)		 成分 质量浓度/
(mg·L-1)
钾 193 硫酸盐 9.73×104
钠 1.30×104 氟化物 29.2
钙 778 重碳酸盐 283
镁 1.27×103 硝酸盐 310
铝 0.199 亚硝酸盐 9.78
锶 19.9 亚硫酸盐 <1
锌 0.785 氯化物 2.90×103
铵盐/氨氮
(NH4+)		 2.67×104 总硬度
(以CaCO3计)		 881

Tab.2

Polyester fabric specification parameters"

试样
编号		 组织
结构		 断裂强力/N 透气率/
(L·s-1·m-2)		 厚度/
mm
经向 纬向
1# 平纹 3 598 2 954 66.0 1.00
2# 平纹 2 072 1 633 135.9 0.65
3# 缎纹 1 475 1 184 122.7 0.74
4# 平纹 1 936 730 17.7 0.58
5# 平纹 2 026 1 485 97.0 0.78
6# 平纹 2 594 1 485 65.4 0.78
7# 斜纹 3 498 2 844 63.9 1.25
8# 平纹 1 720 1 454 71.0 0.48
9# 平纹 2 326 1 985 72.0 0.68
10# 平纹 2 575 2 184 65.0 0.71
11# 平纹 3 448 2 844 52.0 1.32
12# 平纹 2 998 2 344 53.9 1.05
13# 平纹 3 094 2 485 55.4 1.03
14# 平纹 2 076 1 435 107.0 0.97
15# 平纹 1 525 1 314 126.7 0.95

Fig.1

Experimental schematic diagram of saline wastewater evaporation"

Tab.3

Dye ratio of different colors"

颜色 染料及配比 颜色 染料及配比
青色 m(分散黄)∶m(分散蓝)=1∶1 黑色 分散黑
黄色 分散黄 橙色 m(分散黄):m(分散蓝)=1∶1
蓝色 分散蓝 红色 m(分散黄):m(分散蓝)=9∶1
绿色 m(分散黄)∶m(分散蓝)=7∶3 白色 原坯布

Fig.2

Evaporation rate of saline wastewater on different fabric samples"

Tab.4

Relationship between fabric thickness and saline wastewater evaporation rate"

织物
编号		 织物厚度/
mm		 蒸发速率/
(kg·m-2·h-1)		 误差
1# 1.00 0.66 ±0.07
8# 0.48 0.81 ±0.05
9# 0.68 0.79 ±0.05
10# 0.71 0.74 ±0.08
11# 1.32 0.49 ±0.04

Fig.3

Mechamism of influence of fabric thickness on saline wastewater evaporation"

Tab.5

Relationship between fabric permeability and saline wastewater evaporation rate"

织物编号 织物透气率/
(L·s-1·m-2)		 蒸发速率/
(kg·m-2·h-1)		 误差
1# 66.0 0.66 ±0.07
12# 53.9 0.51 ±0.06
13# 55.4 0.55 ±0.05
14# 107.0 0.74 ±0.04
15# 126.7 0.80 ±0.05

Fig.4

Evaporation rate of saline wastewater with different colored fabrics"

Tab.6

Relationship between fabric color and saline wastewater evaporation rate℃"

织物颜色 初始温度 最终温度 温差
黑色 26.9 48.2 21.3
青色 26.6 38.2 11.6
红色 27.2 37.4 10.2
蓝色 27.3 37.4 10.1
绿色 26.4 34.5 8.1
橙色 26.9 34.9 8.0
黄色 27.2 33.6 6.4
白色 27.2 33.6 6.4

Fig.5

Evaporation rates of saline wastewater with different mass fractions"

Fig.6

Salt wastewater evaporation rate of fabrics before and after ZrC treatment"

Tab.7

Surface temperature change of fabrics before and after ZrC treatment℃"

织物名称 初始温度 最终温度 温差
整理前白色织物 27.2 33.6 6.4
整理前黑色织物 26.9 48.2 21.3
整理后白色织物 26.8 58.4 31.6
整理后黑色织物 27.1 71.7 44.6

Fig.7

Air permeability change of fabric before and after ZrC treatment"

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