All-natural biological carrier filler and method for sewage treatment with all-natural biological carrier filler

Abstract

The invention discloses all-natural biological carrier filler and application thereof to sewage treatment. The all-natural biological carrier filler comprises a bamboo tube and a bamboo spoke, the bamboo spoke is formed by circumferentially inserting a plurality of bamboo strips identical in length and width to a bamboo ring, and the other end of each bamboo strip is connected with the bamboo tube to form the filler. The all-natural biological carrier filler is completely made by processing of phyllostachys heterocycla and has advantages of high biocompatibility, quickness in film formation, environmental friendliness and the like, suspended filler cost is reduced from 1000-2000yuan / m<3> to 300-500yuan / m<3>, and the problem of expensiveness of suspended filler is solved. In treatment of refractory pollutants and oligotrophic wastewater, the all-natural biological carrier filler is fed according to an amount being 1 / 4-1 / 3 of the volume of a reaction tank and is in a fluidized state along with flowing of water under the aeration action, rich solid-phase carbon sources are provided in a refractory pollutant treatment process, and supplying as required can be realized to guarantee water supply effects.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a pure natural biological carrier filler and a method for treating sewage. Background technique [0002] Filler is the habitat of microorganisms, the carrier of biofilm, and also has the effect of intercepting suspended solids. The properties of the filler directly affect the treatment effect of the biofilm reactor. At the same time, its cost occupies a large proportion in the construction cost of the entire wastewater treatment system. Therefore, choosing the appropriate filler has an important technical and technical significance for the restoration of polluted water. economic significance. [0003] At present, there are mainly three types of biological carrier fillers in the market: fixed, suspended and suspended. Suspended packing is widely developed and used because it does not need to be fixed and suspended, it only needs to be added to the reactor, and it is easy ...

AI Technical Summary

Problems solved by technology

Most of the well-applied round or cylindrical packings are made of polyethylene or polypropylene. However, these packings have the following shortcomings: 1) The packing material is hydrophobic, lacks bio-affinity, and has a smooth surface for microorganisms. Difficult to attach and poor film-hanging effect; 2) There is a problem of film-hanging clogging, such as built-in fillers, because the materials used for the built-in carrier are often made of aldehyde-vinylized vinylon silk, polyethylene flat silk, etc., which can easily cause blockage and reduce the activity of biofilms. Thus affecting the processing efficiency of the whole system; 3) expensive, due to factors such as rising oil prices, the price of polyethylene or polypropylene packing is as high as 1000-2000 yuan per cubic meter, and it will cause secondary pollution to the environment after being discarded; 4) it is difficult to adapt Treatment of refractory pollutants and oligotrophic wastewater, such as: wastewater containing polycyclic aromatic hydrocarbons, wastewater containing synthetic detergents, wastewater containing plasticizers, and synthetic pesticide wastewater, etc., due to the lack of sufficient carbon sources in wastewater to decompose difficult Degrade pollutants so that refractory pollutants cannot be effectively removed

As the water quality discharge standards become more and more stringent, the existing fillers are difficult to meet the requirements, and there is an urgent need to develop new biological carrier fillers

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