Deodorization technology of sewage pool;
(1) Fix the sewage tank cover with the sewage tank cover.
The anti-hanging membrane structure supported by steel has the following characteristics:
? 1. The waste gas is covered with fluorocarbon fiber membrane with strong corrosion resistance, and the membrane is hung outside by steel structure. This not only gives full play to the corrosion resistance of fluorocarbon fiber membrane, but also fundamentally solves the corrosion problem of steel structure caused by contact with corrosive gases, so the steel structure can be designed according to the corrosion resistance grade of ordinary building steel structure, with a service life of 50 years, giving full play to the performance of steel structure and realizing the perfect combination of structural skeleton and covering materials. Service life: membrane part 15 years, steel structure part 50 years; ?
? 2. Due to the light weight and high tensile strength of membrane material, membrane structure can fundamentally overcome the difficulties encountered by traditional structures in long-span (unsupported in the middle) buildings and is suitable for long-span ponds; ?
? 3. Because the steel-supported anti-hanging membrane structures are all closed bodies, and the membrane structures are glossy surface (negative Gaussian surface), the wind load shape coefficient is small and the wind resistance level is high, so it can be designed according to the typhoon resistance of 12; ?
? 4. The membrane itself has good anticorrosion performance and light weight, which is the most advantageous for long-span tanks, with diverse shapes and novel appearance; ?
? 5. Quick installation: both steel structure fabrication and membrane processing are carried out in the factory, and the processing quality is reliably guaranteed. The on-site installation time is short, which reduces the space occupation. In particular, the old tank reconstruction project can be hoisted as a whole without affecting the operation of the equipment in the tank;
? 6. Convenient maintenance: due to the process requirements, it is necessary to carry out regular maintenance and inspection on the equipment, which can be solved by reserving doors (membrane structure sealed curtain doors or plastic steel windows) and passages on the side membrane;
? 7. Good sealing performance: all membrane materials are hot-melt welded, and the "secondary seam seal" of on-site hot-melt welding is adopted between membrane materials installed on site, which not only ensures the sealing of the cover body, but also ensures the isolation of the corrosion of corrosive gas inside the steel structure.
? 8. Convenient sealing connection with field equipment and pipelines: the membrane structure of all facades can be opened on site as required, and the air tightness can be restored by on-site hot melt welding.
? 9. Beautiful appearance: the steel-supported anti-hanging membrane structure has all the characteristics of modern architecture-membrane structure: elegant and beautiful; Good self-cleaning performance, because the PVDF self-cleaning coating on the surface of the membrane material can effectively reduce the adhesion of dust on the surface of the membrane material, and can be effectively cleaned by natural rain, and its anti-pollution ability is far greater than that of other traditional covering materials, which can maintain its beauty for a long time; Good optical performance.
(2) The subsequent sewage tank shall be covered with a sealing cover.
Compared with the "fixed cover", the "follow-up sewage tank with membrane sealing cover" independently developed and designed by Wei Tuo Environment has the following advantages:
A, can greatly reduce the gas volume?
The volume of the "follow-up sewage tank with membrane sealing cover" is about 1/2 of the volume of the "fixed cover sealing cover". After adopting the design of the "follow-up sewage tank with membrane sealing cover", it can be considered as a non-inlet sealing cover, which can be designed as 3 times/hour ventilation, while the "fixed cover sealing cover" should be considered as an inlet sealing cover, which generally needs to be designed as 6-8 times/hour ventilation.
B, sewage treatment equipment (such as mud scraper) can be exposed outside the hood, so that the operating environment of the motor equipment of the mud scraper is the same as or even better than that before the hood, and it is not necessary to carry out explosion-proof transformation on related motors, thus saving the cost. If the fixed cover is used, it must be modified, and the failure rate will still be high after modification; ?
C, operators and maintenance personnel do not need to enter the sealing body for operation, thus greatly improving the safety; If the fixed cover is used, the operator will not be able to operate inside due to the influence of water vapor when the temperature is low in winter;
D, avoiding the contact between the mud scraper and the smell of corrosive waste, thus greatly improving the service life of the mud scraper equipment. If the fixed cover is used, the corrosion of scraper bridge will be accelerated. It is estimated that the bridge of scraper will be reprocessed every year, which greatly increases the maintenance cost. ?