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Methods for treating copper ions in industrial wastewater

Copper plating is often used as an underlayer for nickel, tin, chromium, silver, and gold plating to improve the bonding strength between the substrate metal and the surface plating and the corrosion resistance of the plating. Therefore, copper-containing electroplating wastewater is very common in the electroplating industry, and this type of wastewater usually contains various heavy metals and complexing agents. Currently, the treatment of copper-containing electroplating wastewater mainly uses chemical methods, ion exchange methods, membrane separation methods, adsorption methods, and biological methods. 1 Chemical methods for treating copper-containing electroplating wastewater 1) Neutralization precipitation method Currently, chemical neutralization and coagulation precipitation methods are commonly used in China to treat copper-containing comprehensive electroplating wastewater. The neutralization of acids and alkalis in the wastewater is

2017

Construction of the Beihai City Daguansha Sewage Treatment Plant recently commenced. The total investment is approximately 83.63 million yuan.

The Dai Guan Sha Sewage Treatment Plant project in Beihai City is located south of Yin Tan Avenue and north of Jin Hai Coast Avenue. It covers approximately 80 mu (approximately 5.3 hectares) and is designed to process 20,000 tons of sewage per day in the near term and 55,000 tons per day in the long term. The project is constructed by Beihai Yin Tan Development Investment Co., Ltd. In the near term, the sewage treatment plant will serve the planned Fengjiajiang New Town and Yin Tan East areas, with the core area being the university park and administrative area in Yin Tan East, covering approximately 5.33 square kilometers. In the long term, it will serve the area south of the railway and east of Guangdong Road, covering 33.3 square kilometers. It is understood that the Dai Guan Sha Sewage...

2014

Warm congratulations to our company on receiving the Jiangsu Province High-tech Enterprise Certification Certificate

Jiangsu Sina Environmental Protection Co., Ltd. successfully passed the Jiangsu Province High-Tech Enterprise Certification on August 6, 2012, and received the High-Tech Enterprise Certificate jointly issued by the Jiangsu Provincial Science and Technology Commission, Jiangsu Provincial Department of Finance, Jiangsu Provincial State Taxation Bureau, and Jiangsu Provincial Local Taxation Bureau in December. The acquisition of this certificate is based on the affirmation and recognition by relevant government departments of Sina Environmental Protection's research and development work in the field of high-tech, and it also provides a huge impetus for Sina Environmental Protection to further strengthen its scientific research and development work. The "High-tech Enterprise Recognition Management Measures" promulgated in April 2008 stipulates that in the country

2014

Seven wastewater treatment plants will be built in Zaoyang, Hubei.

Zaoyang City plans to build a sewage treatment plant in each of the seven towns of Wudian, Xinglong, Taiping, Yangdang, Loutou, Qifang, and Jubawan, where the urban population size reaches more than 30,000. Currently, experts have been hired to conduct feasibility studies and planning design for the seven planned sewage treatment plants, and the project approval for the sewage treatment plants has been applied for. Among them, the Wudian Town sewage treatment plant has a planned investment of 40 million yuan for the plant area, with a national subsidy of 34.32 million yuan and a local matching fund of 12.88 million yuan. The sewage pipe network supporting construction is 24 kilometers long, with a planned investment of 7.2 million yuan, and has been approved by the Ministry of Housing and Urban-Rural Development and the Ministry of Finance. Zaoyang City plans to...

2013

Anhui Chaohu issues 1.2 billion yuan in bonds for water environment governance

Chaohu City Urban Construction Investment Co., Ltd. officially issued 1.2 billion yuan in bonds on December 24, with all proceeds used for the Chaohu City inflow river water environment comprehensive governance project. The total investment of the project is 2.501 billion yuan. In addition to issuing bonds, the project will also apply for some bank loans. The entire project will dredge, protect banks, intercept sewage, revitalize water, and construct green landscapes for the Chaohu City inflow river water system, including Tianhe River, East and West Ring City Rivers, Lujia River, Xi'erchi, and Dinggang River. Currently, part of the demolition work for this project has begun, and it is planned to be completed in 2015.

2013

Hong Kong will build a sewage sludge treatment plant with a capacity of hundreds of billions of tons this year

A US\$600 million sludge treatment plant will be completed in western New Territories, Hong Kong, by the end of 2013. It will handle sludge from 11 sewage treatment plants in Hong Kong. Upon completion, the plant will be able to process up to 2,000 tons of sludge per day, reducing the total amount of sludge in Hong Kong by 90% and greenhouse gas emissions by 260,000 tons annually. The plant's design, construction, and operation are handled by Veolia Environnement, selected by the Hong Kong SAR government through open tender, with a 15-year contract. The plant uses high-temperature incineration technology to ensure that sludge treatment meets the highest environmental requirements and emission standards.

2013

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Jiangsu Xinlang environment Co., Ltd.

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