Filter-adsorption-submerged floating wet land sewage treating system and apparatus

Abstract

This sewage treatment system of filtration-absorption submerging-surfacing wetland comprises 4 different levels of sewage disposal subsystem. The primary sewage treatment system comprises a filtration-absorption coal filter sewage treatment device, magnetic water strainer, ultraviolet sterilization device, etc. The secondary sewage treatment system comprises aeration distributing gutter placed in solar room, distributing channel for confluence, facultative aeration pond of submerging-surfacing wetland which are connected in sequence. The tertiary sewage treatment system comprises filtration-absorption coal filter sewage treatment device, magnetic water strainer, ozone sterilization device and ultraviolet sterilization device. The quarternary sewage treatment system comprises electrolytic water treatment device. The sewage is dewatered by a dewatering device, delivered by a delivering device, fed into a boiler to burn. After treated by the said sewage treatment system the exhaust gas fed to boiler to aid combustion, and the coal failing in treatment by the filtration-absorption coal filter sewage treatment device is fed to the combustor to burn after being dried.

Description

Technical field [0001] The invention relates to a filter, adsorption, submersible and floating wetland sewage treatment system and device, belonging to the application field of water treatment. Background technique [0002] At present, the known sewage treatment technologies and reuse methods are mainly biochemical methods, including conventional primary treatment: pretreatment (coarse screen, fine screen, grit chamber), natural sedimentation (pretreatment effluent→sedimentation effluent<disinfection> ), coagulation and sedimentation (pretreatment of effluent → dosing coagulation → precipitation → effluent <disinfection>), secondary treatment: oxidation pond (pretreatment of effluent → anaerobic pond → facultative oxygen pond → aerobic pond → effluent <disinfection>) , conventional biochemical (first sedimentation effluent<or pretreatment>→aerobic activated sludge→secondary sedimentation→effluent<disinfection>), and removal of N and P (first sed...

AI Technical Summary

Problems solved by technology

Because the conventional sewage treatment system mainly adopts the biochemical method, the secondary pollution of the sewage treatment plant is serious, resulting in the phenomenon of foul smell and sludge surrounding the city

In addition, the quality and quantity of sewage fluctuate greatly, and the sewage treatment plant is greatly affected by the environment and climate. The quality of sewage treatment is unstable, and the operating cost is high. The cost of balancing the pH of sewage and decolorizing sewage is extremely high. The sewage reuse rate is low, and the sewage in many cities is a mixture of industrial sewage and urban domestic sewage, while toxins and heavy metals are highly toxic to the culture of microbial strains, making it difficult to achieve the desired results for the effluent of primary and secondary sewage treatment, while high-grade sewage However, due to the extremely high operating costs, it is difficult to widely popularize and apply under the existing economic development conditions. Due to the reasons mentioned above, the construction of sewage treatment plants in my country's cities is slow. Even if the sewage treatment plants are built, they cannot maintain normal conditions. Operation, serious losses, so that the country's investment cannot obtain the expected return

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