Printing and Dyeing Industrial Park Wastewater Centralized Processing Efficient Combination Process and Stability Control Technology
The high-efficiency combined process and stability control technology for centralized sewage treatment in printing and dyeing industrial parks is an advanced processing technology successfully developed by Nanjing University and Wuxi Environmental Protection Co., Ltd., aiming at the current status of wastewater treatment in the printing and dyeing industry in China. Technical points: Based on the traditional anaerobic-aerobic process, the project focuses on multi-cycle collaborative enhancement technology (MRCT), mainly biological treatment, and chemical treatment to form a complete integrated treatment process, which preserves the biological treatment method. The characteristics of organic pollutant removal, strong decolorization ability, and stable operation have also played a role in the removal of residual organic pollutants by physical and chemical methods to achieve an advanced treatment. The investment and operating costs are low, which is suitable for the status quo of China's printing and dyeing wastewater treatment. Economic evaluation: The technology of the project has been integrated wastewater treatment plant in Zhutang Town, Wuxi (15,000 tons/day for Phase I and Phase II Projects), integrated sewage treatment plant for Qianzhou Township in Wuxi City (phase 3 project for 40,000 tons/day) and sewage treatment in Xinqiao Town, Jiangyin City. The plant (Sunshine Group, 10,000 tons/day) and Jiangsu Hongliu Sheet Group (30,000 tons/day) have been successfully applied in more than ten centralized dyeing wastewater treatment projects. The water quality indicators of the raw water for these projects are: pH values ​​ranged from 9 to 11, CODCr was 900 to 2000 mg/L, chroma was around 500, tons of water investment was around 1,200 yuan/ton, and treatment cost was 1.38 yuan/ton. The tail water after treatment reaches the first-class discharge standard specified in the Integrated Wastewater Discharge Standard (GB8978-1996), that is, the CODCr is less than 100 mg/L, the pH is between 6 and 9, and the chroma is less than 40 times. Due to the characteristics of investment, low operating costs, easy operation and management, small amount of excess sludge, and good process stability (with strong resistance to impact loads), the project has been well received by users. Expert Reviews: The lower investment and operating costs are the characteristics of this project. The textile industry is one of the industries with a large amount of industrial waste water discharged from China, of which the printing and dyeing wastewater discharge accounts for 80% of the textile industry's waste water discharge, reaching about 4 million cubic meters per day. In addition, the production of China's textile printing and dyeing industry has gradually shifted from a number of large cities to small and medium-sized cities, of which the production of the four coastal developed areas of Zhejiang, Jiangsu, Shandong, and Guangdong accounted for more than 75% of the country. The trend of development, while the current total wastewater treatment rate is still low. The centralized treatment of printing and dyeing wastewater has good practical conditions. The technology of this project has broad application prospects. Patent authorization number and awards: The project has won the third prize of National Environmental Protection Science and Technology Award in 2006, the national key environmental protection practical technology in 2007, and the National Key Environmental Protection Practical Technology Demonstration Project (Jiangyin Zhutang Comprehensive Wastewater Treatment Plant) in 2006 and Jiangsu Province in 2006. Environmental Protection Project (Xiecun Sewage Treatment Plant, Qianzhou Town, Wuxi) etc. User comments: This technology adopts an advanced biological treatment-based treatment process. The successful implementation of more than a dozen centralized dyeing and printing wastewater treatment projects proves that it has the advantages of low treatment cost, simple management, stable system operation, and strong shock-resistant load capacity. In terms of matching, I would like to recommend get some basic and practical items: solid color T-shirts, thin coats, trousers, dresses. After you have these fixed items, you can learn to match different styles with the same single item, which can not only reduce the children's clothes too much and have no place to put them, but also save the mothers' phobia of matching choices. Girls Peacoat,Kid'S Overcoat,Girls Topcoat,Children Peacoat Dongguan Yumuran Garment Co.Ltd , https://www.1movingkidsjacketes.com