Ammonia nitrogen is a common pollutant in industrial, agricultural and domestic wastewater. Ammonia nitrogen will consume the dissolved oxygen in the water body, leading to eutrophication of the water body. The digital ammonia sensor measures ammonium ions based on the ion-selective method and consists of a working electrode, a reference electrode, an ion-selective membrane and an electrolyte. The ammonia nitrate probe is an online device for monitoring the content of ammonia nitrogen (NH4+-N) in water, which is suitable for various water bodies, including lakes, streams, groundwater and wastewater. The waterproof level of the NH4-N ammonia sensor is IP68, supports Modbus communication protocol, has automatic temperature and pH compensation function, and is environmentally friendly. The ammonia nitrogen probe has higher precision, wider measurement range and strong stability.
In sewage measurement, potassium ions and ammonium ions have similar chemical properties and are the most significant interference factor, which will cause high measured values. Therefore, potassium ion compensation is required. In addition, the temperature and pH of water samples are also dynamically compensated.
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The conference was chaired by the fifth vice chairman of the Grinding Machine Branch, Wang Bo, general manager of Beijing No. 2 Machine Tool Works Co., Ltd., and Chairman Sun Yimin of Hangzhou Hangji Co., Ltd. At the meeting, Zeng Yu represented the fifth session of the grinding machine branch and made a report on the work of the Fifth Council of the China Machine Tool Industry Association Grinding Machine Branch. At the meeting, Wang Yu, Secretary-General of the Grinding Machine Branch, made a revision of the Regulations on the Work of the Grinding Branch and the Measures for the Membership and Payment of Membership Fees, and voted on the relevant documents. Subsequently, the situation of the new director, the vice president and the candidate unit were explained.
The election of the conference produced the sixth council of the China Machine Tool Industry Association Grinding Machine Branch, and Shanghai Machine Tool Works Co., Ltd. was re-elected as the sixth chairman unit of the grinding machine branch; Wuxi Machine Tool Co., Ltd., Hangzhou Hangji Co., Ltd., Beijing The five member companies of Second Machine Tool Works Co., Ltd., Shaanxi Hanjiang Machine Tool Co., Ltd. and Xianyang Machine Tool Plant were elected as the sixth vice president unit of the grinding machine branch. Another 14 member units including Shanghai No. 3 Machine Tool Plant, Shaanxi Qinchuan Grande Machine Tool Co., Ltd., Tianjin Jinji Grinder Co., Ltd. and Jinan Siji CNC Machine Tool Co., Ltd. were elected as the sixth governing unit of the grinding machine branch.
Subsequently, the conference reviewed and approved the list of the secretariat nominated by the sixth president of the grinding machine branch. Wang Yu, secretary general of the fifth council of the grinding machine branch, served as secretary general of the sixth council of the grinding machine branch. Wu Xiaojian, deputy general manager of Shanghai Machine Tool Works Co., Ltd., gave a report on the economic operation of the grinding machine industry in 2012-2017 to the participants.
The leaders of the participating companies exchanged speeches. They combined the actual situation of the company's own product research and development, economic development, market expansion, etc., and put forward ideas and suggestions on how to further develop the technical standards of grinding machines and guide the development of products of various enterprises. .
While congratulating the birth of the new grinding machine branch council, Mao Yufeng made a profound analysis on the development status of the domestic grinding machine industry and the problems faced by enterprises under the new normal, as well as accelerating product research and development, independent technology innovation, market expansion and other tasks. Explain. At the same time, he also paid attention to the “One Belt, One Road†initiative in the machine tool industry, and sought out development opportunities, market expansion and in-depth discussions. The meeting ended in a warm and united atmosphere.
Abstract On August 22, 2017, the 6th General Assembly and General Election of the Grinding Machine Branch of China Machine Tool Industry Association was held in Beijing. Mao Yufeng, executive vice president of China Machine Tool & Tool Industry Association, the sixth elected director of the China Machine Tool & Tool Industry Association Grinding Machine Branch,...
On August 22, 2017, the 6th General Assembly and the General Election of the Grinding Machine Branch of China Machine Tool Industry Association was held in Beijing. Mao Yufeng, executive vice chairman of China Machine Tool & Tool Industry Association, 6th newly elected chairman of China Machine Tool Industry Association Grinding Machine Branch, executive director and party secretary of Shanghai Machine Tool Works Co., Ltd. Zeng Yu, and leaders of 39 grinding machine branch members from all over the country Or the representative attended the conference.