Multilevel tank type integrated biological bed combination device and method for applying same

Abstract

The invention discloses a multilevel tank type integrated biological bed combination device and a method for applying the same. The multilevel tank type integrated biological bed combination device comprises an up-flow aerobic reactor, an up-flow anaerobic immobilized bacterium reactor and a precipitation water outlet apparatus. The up-flow aerobic reactor, the up-flow anaerobic immobilized bacterium reactor and the precipitation water outlet apparatus are sequentially serially connected with one another. The multilevel tank type integrated biological bed combination device is completely submerged in water, water flow can flow from a water inlet of the up-flow aerobic reactor, sequentially flows through frame plates, a first reflux opening, a first overflow opening, a frame plate in the up-flow anaerobic immobilized bacterium reactor, a second reflux opening, a second overflow opening, a frame plate in the precipitation water outlet apparatus and a third reflux opening, and ultimatelyflows out from a water outlet, and accordingly nitrogen and phosphorus removal and purification effects can be realized for water bodies. The multilevel tank type integrated biological bed combinationdevice and the method for applying the multilevel tank type integrated biological bed combination device have the advantages that energy and spaces can be saved, combination processes of gravity flow-bacterium immobilization-nitrification phosphorus accumulation-denitrification phosphorus release-precipitation adsorption-sludge removal and the like can be implemented in the same reactor, the multilevel tank type integrated biological bed combination device is easy and convenient to operate and wide in water quality applicable range, the ammonia and nitrogen removal efficiency can reach 85% atleast, and the phosphorus removal efficiency can reach 70% at least.

Description

technical field [0001] The invention relates to the technical field of bioreactors, in particular to a multi-stage box-type integrated biological bed combination device and a method for using the same. Background technique [0002] In the past ten years, my country's urbanization has accelerated and environmental protection facilities have not been perfected. The amount of sewage discharged into natural water bodies has increased rapidly. Pollution has led to serious anaerobic water bodies. H+, HS-, S2- and Fe2+, Mn2+ plasma in the water have a series of reactions. As well as the anaerobic decomposition of polluted organic matter, it produces FeS and MnS and other gray-black suspended substances that cannot be suspended, and H2S, CH4, NH3 and other odorous gases, forming black and odorous water bodies. According to the results of the first round of national investigation of black and odorous water bodies, as of February 18, 2016, among the 295 prefecture-level and above citie...

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Problems solved by technology

However, the removal of ammonia nitrogen by the first two methods is unstable, and the investment and operation costs are high, and secondary pollution and other problems will occur. The water quality cannot meet the surface water standard.

In the method of directly adding microbial preparations, in water bodies with a certain flow rate, there are problems such as serious biomass loss that requires repeated dosing; at the same time, a large amount of granular sludge formed by microorganisms during the decomposition process settles at the bottom of the water body, and nutrients will accumulate. and re-release nitrogen and phosphorus to form secondary pollution sludge

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