Akesu recycled Huanghe polyurethane topcoat recycled paint: paint coating is generally composed of four parts: film-forming materials, fillers (pigments and fillers), solvents and additives. Sometimes the composition will change slightly according to the performance requirements, for example, there is no pigment or filler in the varnish, and there can be no solvent in the powder coating.
Paint recycling: paint protection function:
Anti corrosion, waterproof, oil proof, chemical resistant, light resistant, temperature resistant, etc. Objects exposed to the atmosphere are corroded by oxygen, water, etc., resulting in metal corrosion, wood decay, cement weathering and other damage phenomena. Applying paint on the surface of the object to form a protective film can prevent or delay the occurrence and development of these damage phenomena and extend the service life of various materials. Therefore, protection is one of the main functions of coatings.
Huanghe polyurethane finish
Recycled paint: decorative function of paint:
Color, gloss, pattern and flatness. When objects of different materials are coated with paint, they can get colorful and colorful appearances, play a role in beautifying human living environment, and make contributions to human material life and spiritual life that cannot be ignored.
In order to meet the relevant national development requirements and make rational use of water resources, advanced treatment and reuse of coking wastewater has become an urgent problem for coking enterprises. The application of filtration and nanofiltration technology in advanced treatment of coking wastewater In order to solve the problem of advanced treatment and reuse of coking wastewater, Zhongrun Coal Chemical Co., Ltd. has successfully applied ultrafiltration nanofiltration double membrane process to advanced treatment of coking wastewater through experimental research. Through practical application, the process operates stably, the average COD of effluent is less than 5mg/L, the ammonia nitrogen is less than mg/L, the removal rate of suspended solids and chroma basically reaches 1%, and the system effluent meets the quality standard of industrial circulating cooling water make-up water, which can be reused in the circulating water system. 1. The coking wastewater from the process flows through:/O biological treatment and coagulation sedimentation treatment, and the effluent enters the ultrafiltration nanofiltration advanced treatment system. The water from coagulation sedimentation flows into the regulating tank of the advanced treatment system, and then flows into the sand filter for filtration after water quality and volume regulation. The filtered water flows into the intermediate pool, and then flows into the ultrafiltration equipment through the self-cleaning filter after being lifted by the pump. The produced water from the ultrafiltration equipment flows into the ultrafiltration production tank, and then flows into the security filter after being lifted by the pump and adding reducing agent and scale inhibitor, The outlet water from the security filter enters the nanofiltration system after being pressurized by the high-pressure pump. After being treated by the nanofiltration treatment system, the outlet water quality meets the industrial circulating cooling water quality standard. 2. Effluent quality The coking wastewater is deeply treated with ultrafiltration nanofiltration membrane treatment process, which has good removal effect on organic matter, ammonia nitrogen, Ca2+, Mg2+, hardness, chroma, etc. contained in the wastewater, and the effluent meets the industrial circulating cooling water quality standard specified in the Code for Design of Wastewater Reuse Engineering (GB5335-22). See Table 2 for the main inlet and outlet water quality indicators of the process. The water quality is tested after the system has been running for a long time. The organic matter in the effluent of the ultrafiltration nanofiltration membrane treatment system can be less than 5mg/L, the ammonia nitrogen can be less than 3mg/L, the chroma is basically removed, and other indicators meet the design requirements, indicating that the water quality indicators of industrial circulating cooling water specified in the Code for Design of Wastewater Reuse Engineering (GB5335-22) are met by the actual operating effluent of the system, as shown in Table 3.
Aksu recycled paint: all paints are
Flammable and explosive chemicals, during paint construction, a large amount of combustible gas volatilizes into the air, which is very likely to cause burning or burning accidents. Therefore, pay attention to the following problems during paint construction:
1. It is prohibited to use any open fire to bake or heat paint;
2. Air circulation to prevent the accumulation of solvent vapor;
3. It is forbidden to carry out other operations on the paint construction site, especially those caused by iron impact and fierce friction of objects;
4. It is forbidden to wear chemical fiber clothes into the construction site to prevent electrostatic sparks.
