Production technology of glass fiber reinforced plastic biogas digester

Abstract

The invention discloses a production technology of a glass fiber reinforced plastic biogas digester. The technology includes the following steps that firstly, 10-15% of magnesium chloride, 10-15% of water, 28-35% of reinforced fibers, 17-25% of unsaturated polyester resin, 0.1-0.15% of peroxide formyl, 0.1-0.15% of maleic anhydride, 0.3-0.5% of oxalic acid, 1-1.5% of trisodium phosphate and 0.5-0.7% of sodium hexametaphosphate are mixed evenly by a stirring machine; secondly, 20-30% of magnesium oxide is added into the mixture obtained in the first step and continues to be evenly stirred; thirdly, the mixture is extruded by an extruder and poured into a mould, the mixture is subjected to mould pressing, curing, shaping and demoulding, and the product is obtained. Resin serves as water-resistant regulator, structural performance of a magnesium oxychloride adhesive material is improved in the hydratable setting process, water resistance and durability of the biogas digester are greatly improved, and sealing performance of the biogas digester can also be better than that of a biogas digester of a cement structure.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a production process of a fiberglass biogas tank. Background technique [0002] Biogas digesters are indispensable drainage treatment equipment in the construction field. They are used to discharge domestic wastewater into municipal pipelines after primary treatment or into lower-level sewage treatment facilities for advanced treatment. Most of them are buried. In the early days, bricks, reinforced concrete or steel plates were usually used to manufacture biogas digesters, but they all had obvious defects. In recent years, glass fiber reinforced plastic digesters have gradually been selected by most construction units. The scientific name of FRP is glass fiber reinforced plastic, and the biogas storage tank made of FRP has the characteristics of strong corrosion resistance, no leakage, easy construction, and slow aging speed. The service life can reach more than 50 years...

AI Technical Summary

Problems solved by technology

FRP biogas storage tanks are generally buried 0.7 to 3.5 meters underground to save ground space. The ground can be used for greening, squares, roads, parking lots, etc. Therefore, the underground tank needs to bear the upper soil pressure, side pressure, and ground load. (such as ground parking or vehicle traffic pressure) and multiple pressures such as uneven geological settlement stress, the tank body must have sufficient strength to withstand external forces, so high requirements are placed on the strength of the fiberglass biogas digester itself, but the existing technology There are problems of poor surface hardness and insufficient compression and bending resistance of buried storage tanks.

Images