Chen Tong Company currently has 65,438+05,000 square meters of R&D and production base, including professional workshops and advanced processing equipment. The company always regards product quality as its life. Perfect process control and management systems have been established in product research and development, raw material procurement, manufacturing production and ex-factory inspection. Its production of high-quality environmental protection equipment depends on its perfect detection means, sophisticated processing equipment, systematic quality assurance system and strict process control measures.
At present, the company has applied for and owned a number of patents and other intellectual property rights. Chen Tong pays attention to research and development and independent innovation technology. Since its establishment, the company has developed rapidly and registered its own trademark brand. At present, it has been recognized as a national high-tech enterprise and won the fifth Shanghai Science and Technology Enterprise Innovation Award and other honors.
China Petrochemical, CNOOC, China National Nuclear Corporation and Carrefour, the world's top 500 enterprises, have all applied Chen Tong's environmental protection products and technologies, and their products are widely used in sewage treatment plants, chemical and pharmaceutical industries, food and beverage industries and so on in many cities.
The stacked spiral sludge dehydrator produced by our company considers hydraulic co-direction, thin-layer dehydration, prolonged dehydration path and appropriate dehydration treatment pressure. Get rid of the technical problems of previous generations of sludge dewatering equipment, such as easy blockage, high energy consumption and complicated operation, further reduce energy consumption and water consumption, prolong the service life of the equipment, ensure the dewatering performance of the equipment, and achieve the purpose of efficient and energy-saving dewatering.
Selection mode
Sewage will produce a lot of sludge after precipitation. Even after concentrated digestion, the water content is still as high as 96? %, which is very large and difficult to be absorbed and disposed of. It is necessary to dehydrate to increase the solid content of the mud cake, thus reducing the occupied area of sludge stacking.
Large and medium-sized sewage treatment plants generally adopt mechanical dehydration. There are many kinds of dehydrating agents, which can be divided into three categories according to the dehydration principle: vacuum filtration dehydration, pressure filtration dehydration and centrifugal dehydration. This paper introduces the working principles, equipment selection, maintenance points and operating costs of filter presses (including belt filter presses and plate-and-frame filter presses) and centrifugal dehydrators commonly used in domestic sewage treatment plants.
1,? The belt filter press is less affected by the fluctuation of sludge load, and also has the characteristics of low sludge moisture content, stable operation, less startup, relatively simple management and control, and low requirements for the quality of operators. At the same time, because the belt filter press dehydrator entered China earlier, quite a few manufacturers can produce this kind of equipment. In the decision-making of sewage treatment project construction, belt filter press can be selected to reduce the project investment. At present, most newly-built sewage treatment plants in China use belt filter press dehydrators. For example, the five dehydrators in the first phase of Beijing Gaobeidian Sewage Treatment Plant are all belt filter press dehydrators, and the filter belt and drum are in good condition since they were put into operation. Therefore, this model is still selected for equipment selection in the second stage.
2. Compared with other types of dehydrators, the solid content of mud cake of general plate-and-frame filter press is the highest, which can reach? 35%, if considering the factors of reducing the area occupied by sludge stacking, the plate-and-frame filter press should be the first choice. ? Moving mode of filter plate. It is required to be fully automatic or semi-automatic through the liquid-gas device, which is inconvenient to operate? Filter cloth swinging device makes the filter cake fall off easily. Compared with other types of dehydrators, the biggest disadvantage of plate-and-frame filter press is that it occupies a large area. Take the belt filter press used in the first phase of Beijing Gaobeidian Sewage Treatment Plant and the plate-and-frame filter press used in Anshan Industrial Sewage Treatment Plant as examples: the sewage treatment capacity of Gaobeidian Sewage Treatment Plant is 500,000 t/d, the sludge output is 1852.5 m3/d, and the dry matter is 92.63t/d. Five German KLEIN-KS30 belt filter presses are adopted, and each filter press covers an area of only 2,750. Anshan Sewage Treatment Plant has a treatment capacity of 22t/d and a dry matter of 275t/d, and adopts six plate-and-frame filter presses, each of which covers an area of 2400* 12000mm. At the same time, the plate-and-frame filter press is rarely used in large-scale domestic sewage treatment plants because of its intermittent operation, low efficiency, poor operating room environment and secondary pollution.
In the future, the company will continue to play its leading edge in core technologies and market position in related fields, and develop into a leading supplier of sewage treatment equipment and solutions and the most competitive high-tech environmental protection enterprise. In 20 12 years, the sales volume of dehydrators produced by the company ranked first in China. The core of this system introduced by the company is engineering facilities and system integration equipment, so that the discharged sludge can meet the requirements of improvement. Compared with the diaphragm plate-and-frame filter press, the pressure of the equipment is high, and the area of the filter plate is only one quarter of that of the diaphragm filter press, thus saving the floor space. The above is about the brand of sludge dehydrator, I hope it will help everyone!
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