RO reverse osmosis system to help a new lease on life - printing and dyeing wastewater 【 3 m filter.

Project team, project team and Shanghai donghua university governance printing and dyeing wastewater, a wastewater treatment plant cooperation to dig in the factory building a is greater than the pool of aeration biological filter. Local geological conditions is limited, there is underground quicksand, mining are at risk of landslides, once buried, consequence is unimaginable. But under the efforts of team members carefully detailed, project engineering is completed. The success of the project application is not only a matter of science, and engineering problems, sometimes the details of the project directly determines the success or failure of the project. Donghua university, the project team project features complete professional quality, ability, from design, construction to management, commissioning, everyone can play a special skill. And the feature in the project played an important role in engineering application.
according to introducing, at present, the printing and dyeing wastewater large flux of membrane technology has gradually realize the industrialization, the use of wire wound filter method in the domestic implementation of 45 engineering, actual emissions COD16 ten thousand tons. A dyeing and finishing co. , LTD in zhejiang as an example, because of the shortage of water resources, the production with tap water price 2 per ton. 2 yuan, in 2003 the company even when water shortage by car to pull the water in the mountains, 20 yuan per ton. After pp cotton filter manufacturers using membrane technology, the company's total wastewater back powerusageeffectiveness was 56%, and the disposal only 1 per ton. 3 yuan, a year can reduce water 495000 tons, costs 10. 89 million yuan, enterprise which took a real & other; Green & throughout; The road of textile.
the foul printing and dyeing wastewater, after QingZhuo shunt, layers of filtration, after purification & other; A new lease on life & throughout; And went back to the production workshop was recycled; A project to integrate several advanced technology, fill the blank of the industry at home and abroad for many times, by jiangsu, zhejiang, shandong, guangdong, fujian and other places of 21 enterprises are widely used, nearly three years to nearly 70 million yuan savings for the enterprise & hellip; … These achievements were with a group called & other; Big flux film printing and dyeing wastewater treatment and reuse technology and industrialization & throughout; ( The abbreviation & other; Throughout large flux film & printing and dyeing wastewater; ) The scientific research project of link together.
the headed by professor XiDan stand, ji-hua Chen donghua university, led by the project team to develop the scientific research project, with its outstanding technological innovation and industrialization of achievements, won the 2008 national scientific and technological progress second prize. And research purpose of this project, it begins with these experts determined environmental beliefs and simple change textile pollution.
　　“ We proposed the wastewater reuse in the early 1990 s vision & throughout; , he said, the degree of automation and standardization of printing and dyeing enterprises in our country is limited, and the distribution is too dense, energy and water consumption per unit product volatile, have no experience to draw lessons from abroad. To find the accord with the characteristics of the dyeing and printing enterprises in our country wastewater reuse method, realize the ideal waste, is about to start from scratch, independent innovation.
to make waste water & other; Thoroughly remould oneself & throughout; Is to find the key factors that affect water quality. In the process of independent research and development, XiDan set sights on the team will research a place called & other; Chemical oxygen demand (cod) & throughout; ( COD) On indicators. COD is an important comprehensive index to evaluate the water quality pollution degree, the higher the COD suggests that the more serious water pollution. At present, the world of COD of printing and dyeing industry standard for every litres of 150 milligram, our country is more strict & ndash; — Every litres of 80 mg to 100 mg.
he said & other; To achieve this standard, difficult. ” He also told reporters that foreign method of adsorption of activated carbon filter is adopted to reduce COD, effect is good, but the cost is too high, for the printing and dyeing industry in our country mainly small and medium-sized enterprises, it obviously doesn't work.
what method can not only effectively reduce the COD, and can save money? XiDan team's answer was: big flux low-cost fiber membrane technology.
membrane is often used a filtering device, pure water because the membrane technology has effectively reduce COD, energy saving, simple equipment, convenient operation, thus has great potential for development in water treatment. Abroad the membrane technology are used for drinking water, desalination, and other areas of the high precision, rarely used in industry. Because of industrial wastewater often contains complex material such as acid, alkali, oil, processing is very strict, so the material properties of the membrane high requirements are put forward. And XiDan made team and not only to the application of membrane technology in the industrial field, but also break the finished film composed of a single material more practice at home and abroad, the pioneering with more material matching method, membrane. It improves the membrane pore size and flux, let back into the water to get increase per unit time and space, so as to adapt to the characteristics of industrial waste water back to the consumption demand high. Moreover, ultrafiltration membrane pore size is less than 0. 5 microns, microfiltration membrane aperture to dozens of micrometers, and they developed by professor xi membrane, membrane pore size is about 0. 1 micron, between the two, fill the international blank of this field. Using the technology of printing and dyeing wastewater can be back to powerusageeffectiveness higher to 10% from 45%, water recycling power consumption per ton by 3 ~ 4 degrees dropped to zero. 8 degrees.