Quartz sand is quartz particles made by crushing and processing quartz stone. Quartz stone is a non-metallic mineral, a hard, wear-resistant and chemically stable silicate mineral, and its main mineral component is sio2. Quartz sand is milky white or colorless and semi-transparent, with a Mohs hardness of 7. Quartz sand is an important industrial mineral raw material and is not a hazardous chemical. It is widely used in industries such as glass, casting, ceramics and fireproof materials, silicon-iron smelting, metallurgical fluxes, metallurgy, construction, chemical engineering, plastics, rubber, abrasives, and filter materials.
The production and processing capabilities and levels of wastewater treatment equipment manufacturers
When there are no issues with the processing technology and techniques, it is necessary to further investigate and understand the production and processing capabilities and levels of the wastewater treatment integrated equipment manufacturers. After years of wild growth and extensive development, some enterprises in China's environmental protection equipment industry have begun to transform in recent years, focusing on quality and quality control, and conducting standardized and large-scale production.
It should be noted that there are quite a few wastewater treatment equipment manufacturers in the market that package themselves very high-end, with a bunch of qualifications and certificates. In fact, they do not have their own production factories. They mainly entrust professional manufacturers to produce under their own brands. Currently, the contract manufacturers mainly include traditional small environmental protection equipment processing factories and large professional mechanical equipment processing factories. These two types of contract manufacturers each have their own characteristics. Most traditional small-scale environmental protection equipment processing factories have a relatively low level of management, and they invest insufficiently in product quality control, safety measures, and environmental protection, resulting in no guarantee of product quality. At the same time, their production efficiency is low and their production capacity is limited. The advantage is that their prices are relatively low.
Large-scale professional mechanical equipment processing factories have strong machining capabilities, invest a lot in software and hardware, and have a large production capacity. However, their drawbacks include a lack of in-depth understanding of the integrated sewage treatment process and equipment, or some structural and dimensional designs are unreasonable to adapt to the expansion of existing production equipment and production factors, such as the pool depth of the integrated sewage treatment equipment. The products produced by these manufacturers generally have a size of less than 3 meters, and some are even only 2.4 meters, resulting in a very small effective water depth and a very low oxygen utilization rate. If the fan model is not enlarged, it is highly likely to cause insufficient dissolved oxygen, affecting the treatment efficiency and effluent quality. If the fan model is enlarged, it will increase the system energy consumption and investment. In short, So-called wastewater treatment equipment manufacturers without their own production and processing capabilities generally have problems such as uncontrollable quality and high prices. One should be cautious when choosing. If the wastewater treatment equipment manufacturer has its own production workshop and processing capacity, Then, it is necessary to have a thorough understanding and investigation of the manufacturer's production site, production facilities, processing procedures and techniques, quality control level, production standardization, quality inspection, etc. Of course, the most important thing is to see how the quality of the manufacturer's finished products is. Visit several manufacturers and make horizontal comparisons. As the saying goes, it's not that you don't know the goods, but that you are afraid of comparing them.
One more point to note is the anti-corrosion issue of integrated sewage treatment equipment. Whether it is above-ground integrated sewage treatment equipment or underground integrated sewage treatment equipment, the anti-corrosion of the equipment shell is very important. For above-ground integrated sewage treatment equipment, if the anti-corrosion is not done well, at the very least, the equipment will be covered with rust and affect its appearance; in severe cases, the equipment shell will be rusted through and leak water. It causes sewage to flow everywhere. It is difficult to repair and even the equipment may be scrapped. For underground integrated sewage treatment equipment, although rust is not easily detected and does not affect the appearance, if the rust is severe, it may cause groundwater pollution or water entering the equipment room, damaging the equipment and electrical instruments, etc. In particularly severe cases, it may even lead to ground collapse of the equipment, causing safety accidents.
The key to the anti-corrosion performance of equipment lies in the rust removal process and level of the steel base of the shell. Before painting the shell, the rust layer and oxide scale on the surface of the steel should be thoroughly removed to maintain good cleanliness and roughness. Only in this way can the anti-rust paint have better adhesion and anti-corrosion effect. Otherwise, even the best paint will be in vain. However, at present, most domestic wastewater treatment equipment manufacturers either manually grind and remove rust or simply spray anti-rust paint without rust removal. When leaving the factory, the equipment looks shiny and bright on the outside. But since it has not come into contact with water, there is no problem for the time being. However, its true appearance will be exposed shortly after it is put into use on site. The surface paint of the above-ground integrated sewage treatment equipment will peel off in large pieces. As the underground integrated sewage treatment equipment is buried underground, it is not easy to detect. However, its anti-corrosion coating basically does not play its due role and can only maintain its service life by the thickness of the steel plate, which poses a major safety hazard. Therefore, for customers who have requirements for quality and service life, when inspecting the manufacturer, it is advisable to check whether the steel in the factory has undergone rust removal treatment, whether it is manual rust removal or sandblasting rust removal, and whether it meets the Sa2.5 rust removal standard.
