Project example of zero-discharge treatment of stainless-steel production wastewater

doi:10.19965/j.cnki.iwt.2020-0352

Abstract

Abstract:

Based on the example of a project of stainless steel production wastewater from an enterprise in Suzhou, the characteristics of stainless steel production wastewater are introduced. The core zero-discharge system, composed of "pretreatment system+reverse osmosis system+MVR evaporation system", is introduced in terms of process characteristics, design parameters, treatment effects and economic benefits. The final effluent water quality can meet the water quality standards of the workshop. After the project is completed and operated, the wastewater treatment system operates stably and the effluent quality is good. Since the operating cost of water is 12.31 yuan/t, 16.096 million yuan can be saved annually, and the economic and environmental benefits of the system are obvious.

Key words: stainless steel production wastewater, pretreatment system, reverse osmosis system, MVR evaporation system, zero-discharge

摘要：

以苏州某企业不锈钢产品生产废水排放工程为例，介绍了不锈钢产品生产废水的特点，并从工艺特点、设计参数、处理效果及经济效益等方面介绍了以“预处理系统+反渗透系统+MVR蒸发系统”为核心的零排放系统，最终出水水质可达产线用水水质标准。工程建成后，系统运行稳定、出水水质良好，运行成本为12.31元/t，可节省1 609.6万元/a，经济、环境效益明显。

关键词: 不锈钢产品生产废水, 预处理系统, 反渗透系统, MVR蒸发系统, 零排放

CLC Number:

X703

Qiyun Shao,Zhihui Jiang,Dongri Yuan,Qingjie Xie,Lei Zhang. Project example of zero-discharge treatment of stainless-steel production wastewater[J]. Industrial Water Treatment, 2021, 41(7): 152-156.

邵启运,蒋志辉,袁东日,解清杰,张磊. 不锈钢产品生产废水零排放工程实例[J]. 工业水处理, 2021, 41(7): 152-156.

/ / Recommend / Download Citations

URL: https://www.iwt.cn/EN/10.19965/j.cnki.iwt.2020-0352

https://www.iwt.cn/EN/Y2021/V41/I7/152

Figures/Tables 9

References 10

1	陈天玉. 不锈钢表面处理技术[M]. 北京: 化学工业出版社, 2016: 15- 35.
2	王立立, 张娜, 胡勇有. 生活污水化学强化混凝除磷试验研究[J]. 工业水处理, 2006, 26 (3): 26- 30. URL
3	张景成, 沈志恒, 李圭白. 混凝法去除水中重金属的机理探讨[J]. 哈尔滨建筑大学学报, 1996, 29 (5): 54- 58. URL
4	张爽, 宋靖国, 杨平, 等. A/O膜生物反应器处理高浓度氨氮废水试验研究[J]. 环境污染与防治, 2009, 31 (2): 38- 41. URL
5	洪得香. A/O-MBR系统特性及其处理污水的试验研究[D]. 杭州: 浙江工业大学, 2010.
6	何圣兵, 王宝贞, 王琳. 生物膜-膜生物反应器处理生活污水的实验研究[J]. 给水排水, 2002, 28 (11): 21- 23. URL
7	侯新刚, 潘佼, 王玉棉, 等. 用离子交换法从低浓度硫酸镍溶液中回收镍[J]. 兰州理工大学学报, 2010, 36 (5): 19- 22. URL
8	姜春东, 王晓伟, 张婷婷. 双级反渗透系统在煤化工高盐废水处理中的应用[J]. 工业水处理, 2020, 40 (3): 115- 117. URL
9	孙海东, 周澍. MVR蒸发器处理钢铁行业废水并回用[J]. 环境科学导刊, 2018, 37 (1): 60- 62. URL
10	侯金财. A/O-MBR生物脱氮工艺试验研究[D]. 湘潭: 湘潭大学, 2013.

指标	pH	SS	COD	NH₃-N	TN	TP	电导率	Cr⁶⁺	Ni²⁺
进水水质	1~2	100	4 500	4.5	55	54	3 000~3 500	2.61	2.34
回用标准	6.5~7.5		50	2	6	2	600

指标	pH	SS	COD	NH₃-N	TN	TP	电导率	Cr⁶⁺	Ni²⁺
进水水质	1~2	100	4 500	4.5	55	54	3 000~3 500	2.61	2.34
回用标准	6.5~7.5		50	2	6	2	600

构筑物	设备参数
调节池	1座；碳钢防腐结构，规格为1 500 mm×600 mm×4 000 mm。潜水搅拌机1台，功率2.2 kW；提升泵2台，流量60 m³/h，扬程10 m，功率4 kW，一备一用
混凝/絮凝池	1座，分2格，碳钢防腐结构，单格尺寸500 mm×800 mm×4 000 mm。快速搅拌器2台，单台功率2.2 kW。停留时间30 min
物化沉淀池	1座，碳钢防腐结构，规格为4 000 mm×800 mm×4 000 mm。污泥抽吸泵2台，流量1 m³/h，扬程60 m，一备一用。水力停留时间4 h
缺氧池	1座，碳钢防腐结构，规格为6 500 mm×1 200 mm×4 000 mm。提升泵2台，流量60 m³/h，扬程10 m，功率4 kW，一备一用
好氧池	1座，碳钢防腐结构，规格为6 500 mm×1 200 mm×4 000 mm。提升泵2台，流量60 m³/h，扬程10 m，功率4 kW，一备一用
生化沉淀池	1座，碳钢防腐结构，规格为6 500 mm×1 200 mm×4 000 mm。污泥抽吸泵2台，流量1 m³/h，扬程60 m，一备一用。水力停留时间10 h
MBR膜池	1座，碳钢防腐结构，规格为6 500 mm×1 200 mm×4 000 mm。提升泵2台，流量60 m³/h，扬程10 m，功率4 kW，一备一用
多级过滤器	石英砂过滤器、活性炭过滤器、离子交换树脂过滤器各1座，均为FRP材质，规格均为D 600 mm ×1 850 mm
反渗透系统	RO增压泵3台，流量4 m³/h，扬程23.5 m，功率0.55 kW；RO高压泵3台，流量4 m³/h，扬程112 m，功率3 kW；保安过滤器3台，PP棉滤芯，过滤精度5 μm；RO设备3套，产水量0.78 m³/h；RO膜76支，聚酰胺复合膜；RO膜壳32根，FRP材质
MVR蒸发系统	蒸汽发生器1台，功率48 kW；蒸发器1台，316L材质，容积0.7 m³；汽液分离器1台，DN600，316L材质；蒸汽压缩机1台，输气量0.5 t/h，316L材质；凝水罐1只，容积0.5 m³，316L材质，系统总功率110 kW
板框压滤机	污泥储罐尺寸D 2 000 mm×3 000 mm，碳钢防腐结构。板框压滤机1台，过滤面积20 m²

构筑物	设备参数
调节池	1座；碳钢防腐结构，规格为1 500 mm×600 mm×4 000 mm。潜水搅拌机1台，功率2.2 kW；提升泵2台，流量60 m³/h，扬程10 m，功率4 kW，一备一用
混凝/絮凝池	1座，分2格，碳钢防腐结构，单格尺寸500 mm×800 mm×4 000 mm。快速搅拌器2台，单台功率2.2 kW。停留时间30 min
物化沉淀池	1座，碳钢防腐结构，规格为4 000 mm×800 mm×4 000 mm。污泥抽吸泵2台，流量1 m³/h，扬程60 m，一备一用。水力停留时间4 h
缺氧池	1座，碳钢防腐结构，规格为6 500 mm×1 200 mm×4 000 mm。提升泵2台，流量60 m³/h，扬程10 m，功率4 kW，一备一用
好氧池	1座，碳钢防腐结构，规格为6 500 mm×1 200 mm×4 000 mm。提升泵2台，流量60 m³/h，扬程10 m，功率4 kW，一备一用
生化沉淀池	1座，碳钢防腐结构，规格为6 500 mm×1 200 mm×4 000 mm。污泥抽吸泵2台，流量1 m³/h，扬程60 m，一备一用。水力停留时间10 h
MBR膜池	1座，碳钢防腐结构，规格为6 500 mm×1 200 mm×4 000 mm。提升泵2台，流量60 m³/h，扬程10 m，功率4 kW，一备一用
多级过滤器	石英砂过滤器、活性炭过滤器、离子交换树脂过滤器各1座，均为FRP材质，规格均为D 600 mm ×1 850 mm
反渗透系统	RO增压泵3台，流量4 m³/h，扬程23.5 m，功率0.55 kW；RO高压泵3台，流量4 m³/h，扬程112 m，功率3 kW；保安过滤器3台，PP棉滤芯，过滤精度5 μm；RO设备3套，产水量0.78 m³/h；RO膜76支，聚酰胺复合膜；RO膜壳32根，FRP材质
MVR蒸发系统	蒸汽发生器1台，功率48 kW；蒸发器1台，316L材质，容积0.7 m³；汽液分离器1台，DN600，316L材质；蒸汽压缩机1台，输气量0.5 t/h，316L材质；凝水罐1只，容积0.5 m³，316L材质，系统总功率110 kW
板框压滤机	污泥储罐尺寸D 2 000 mm×3 000 mm，碳钢防腐结构。板框压滤机1台，过滤面积20 m²

[1]	Feifei LIU, Yanwei WU, Wentao WANG, Tong TANG, Hailong MA. Application of membrane technology and evaporating crystallization process in zero-discharge of high salinity wastewater from VB₁₂ industry [J]. Industrial Water Treatment, 2025, 45(3): 219-226.
[2]	Chuan XIA, Shuang LIU, Xuzhong LI, Jie WANG, Yunlong LI. Engineering example of desalination zero⁃discharge of lead and zinc smelting wastewater [J]. Industrial Water Treatment, 2022, 42(4): 164-169.
[3]	Chao Xu,Ning Ding,Wenming Li. A combined process of SWRO and MVR design for zero-discharge project for concentrated water of a water purification plant [J]. Industrial Water Treatment, 2020, 40(9): 112-115.
[4]	Chong Zhao,Jian Yuan,Hongying Yuan,Jianyong Mao,Dawei Jing. Operation regulation mode and energy consumption analysis for reverse osmosis system [J]. Industrial Water Treatment, 2020, 40(7): 116-120.
[5]	Chundong Jiang,Xiaowei Wang,Tingting Zhang. Application of the two-stage reverse osmosis system in the high-salt wastewater treatment of the coal chemical industry [J]. Industrial Water Treatment, 2020, 40(3): 115-117.
[6]	Bai Lu, Chen Wu, Wang Kailiang, Zhang Zhengdong, Lou Zhen'gang, Ying Hongcang, Yang Linjun. Research progress in the zero-discharge treatment technology for desulfurization wastewater from coal-fired power plants [J]. INDUSTRIAL WATER TREATMENT, 2019, 39(4): 16-20.
[7]	Chen Fuqiang, Chi Yongzhi, Tian Binghui, Zheng Xianqiang, Fei Xuening, Fu Cuilian. Research progress in the zero discharge technology for high-salt industrial wastewater [J]. INDUSTRIAL WATER TREATMENT, 2018, 38(8): 1-5,27.
[8]	Feng Likui, Li Guanghui, Ge Xuejing, Xu Jinying. Cause analysis and treatment of microorganism pollution in the pretreatment system of reverse osmosis [J]. INDUSTRIAL WATER TREATMENT, 2016, 36(3): 103-105.
[9]	Mo Qingshi. Running s tate of follow-up ion exchange bed in RO sys tem and analys is [J]. INDUSTRIAL WATER TREATMENT, 2008, 28(4): 68-71.
[10]	Jing Dawei, Wang Xiaowei, Luo Hao, Cui Xuli, Zhong Huaiming, Xu Ping. Distribution properties of RO element index and its optimal arranged order [J]. INDUSTRIAL WATER TREATMENT, 2007, 27(8): 66-69.
[11]	Gao Huasheng. Progress in the side-stream softening and purification treatment of industrial circulating cooling water systems [J]. INDUSTRIAL WATER TREATMENT, 2007, 27(6): 1-5.
[12]	Bi Fei, Jing Dawei. Analysis of the utmost recovery rate of insoluble salts in the reverse osmosis system [J]. INDUSTRIAL WATER TREATMENT, 2004, 24(6): 14-16.
[13]	Li Haibo, Wei Jianghong, Huo Jiangbo, Zhao Jianpeng. Researches and experiments of the application of purified effluent in the power plant to circulating supplementary water [J]. INDUSTRIAL WATER TREATMENT, 2003, 23(10): 62-63.
[14]	LI Xiuli, LI Hongxiu. Energy consumption of seawater reverse osmosis system [J]. INDUSTRIAL WATER TREATMENT, 2002, 22(10): 56-57.

Please choose a citation manager

Content to export