Steel Industry

 

Steel Industry Successfu光她l Case

　　1. Background

　　The steel industry consumes a h校中uge volume of water and disc靜秒harges a large amount of wa快著ste water. Industrial wast數員e water includes efflu美信net generated during t輛愛he production and opera友計tion of various proc什年esses of steel enterpr日是ises, sewage and demineraliz筆看ed water from circulatin腦行g cooling water systems, 用鐘and concentrated br市請ine produced when deminerali和玩zed water and pur唱船e water are produced.

　　In recent years, with the prom南長otion of energy-saving and emissio風關n reduction, the introduction of membr習月ane water treatment process放裡 has been continuousl務雪y advanced, the energy consumption of 就錢the iron and ste動村el industry has been improved, and th熱也e fresh water cons小理umption per ton of steel and the ma師去in pollutants dis錢美charge have been continuousl紅店y reduced. In 2015, fresh w新飛aterconsumption per ton of ste美場el dropped to a record藍線 low of 3.25m3;, with 36 companie上個s whose fresh water consumptio間地n per ton of stee短服l reached less t村姐han 3m3;. Compared with 2東見013, it decreased by 7.14上志%, and the water reuse rate reach民討ed 97.71%, an increase of 拍科0.14% over 2013.

　　2. Case: Water recyc筆麗ling project of a large steel compa吃嗎ny

　　This company is a larg熱冷e-scale integrated steel enterpris錢路e and a stainless steel co計窗mpany with the largest production 亮美capacity and the mos請少t advanced techno金新logy and equipment in the world. In輛什 2013, it produced 9.98 million 月他tons of steel, real這票ized sales income of RMB 146 billion , and pr我吧ofit of RMB500 million, taking a leading role 河土in the industry.

　　In October 2008, it invested a new se短老wage treatment p冷明roject, by which wasterwater would be村如 treated and re吃的used, functioning as a supplemented w舊友ater source. Meanwhile, free service he紅會lped reduce the urban s土來ewage discharge so that 有機the industrial water recycling rate會綠 of this company reached over去畫 98.2%。

 

 

Project Location：Shanxi China

Project Name：Industr吧兵ial Waste water Recycle雨離

Water Quality：Residentia微姐l waste water + Steel pro兒暗duction waste water

Use of Permeate Water：Process 的議water

Time in Operation：日愛 Early in 2014

Capacity： 34000m3/d

Type of Element： Fouling Resistant Elements

No. of Element： 1071 pc木火s

RO System Unit：（33:18）長煙×7

Unit Volume： 200m3/h

No. of Vontron System：3 Units

　　3. Cost: Benefit Analysis

　　The designed water pr紅技oduction capacity of this wastewater房上 reuse project is 600 m3/h, with a daily output of 14,000m3 of qualified desalinated wate呢藍r. It can save 14,000照又m3 of fresh w國不ater every day,嗎窗 and about 52.5 mi行海llion m3 each year. Accounting for用唱 depreciation costs of fixed assets, 著志energy consumption, chemi木鐘cal consumption, and labor man線國agement, the cost of qualified deminer知我alized water production is abou讀弟t RMB 3.0 / ton, and the local industr體少ial water price is多離 RMB 3.40  / ton. If used as件睡 process water, further desalination 西國is required. This project has continue新綠d to lead the industry in China in ter了黃ms of water saving and emiss化小ion reduction. 火化and it has realized a "w熱路in-win" strateg月南y for the treatment of water re內數sources and the realization of wastew厭遠ater functioning a門聽s resources.