Oxidation ditch technique processing method based on feed water variation of water quality

Abstract

The invention discloses an oxidation gouge art treating method based on the inlet water quality change, and the method belongs to the technical field of the water pollution control in environment protection. The method is a set of control condition and operation method realizing high efficiency and stable synchronic nitration and denitrification process under the carrousel oxidation gouge condition. Firstly, the water quality component of the inlet water is determined from the read inlet water data and then the dynamic change characteristics are obtained through analysis; the operation manner and the control condition of the oxidation gouge are primarily determined; at the same time, the operation control condition of the oxidation gouge is further determined according to the inlet water volume and the dynamic change rule of the water quality; and finally the control strategy for stably operating the oxidation gouge is gotten. The invention is used for upgrading the alternation and optimizing the operation of the established oxidation gouge art, and optimizing the design of the newly built oxidation gouge art, as well as improving the treating effect of the oxidation gouge art.

Description

technical field [0001] The invention belongs to the technical field of water pollution control in environmental protection. In particular, it relates to an oxidation ditch process treatment method based on the change of influent water quality, which is applied to the upgrading and optimization of the existing oxidation ditch process, optimized operation and optimized design of the newly built oxidation ditch process, and improves the sewage treatment effect of the oxidation ditch process. Background technique [0002] At present, the problem of environmental pollution in my country is serious, and the problem of eutrophication of water bodies is becoming more and more serious. At the same time, with the rapid development of my country's economy, the demand for energy is also increasing day by day. Key factor. Urban sewage treatment is one of the energy-intensive industries. Among the operating costs (including depreciation fees, etc.) 40% to 50% of the consumption. It is a...

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Problems solved by technology

However, these studies have not fully considered the impact of the load change of the incoming water on the synchronous nitrification and denitrification process of the oxidation ditch, including the influence of daily water volume and water quality changes on the stability of the synchronous nitrification and denitrification process of the oxidation ditch. Only a few researchers ( GucluInsel et al. in the literature "Effect of Aeration on nutrient removal performance of oxidationditchsystems.Env.Eng.Sci., 2005, 22(6):802-815" and "B.Y.Ammaryand J.A.Radaideh.Simultaneous nitrification and denitrification in anoxidation ditch plant.Chem. Biochm.Eng.2005, 19(2): 207-212 ". Reported, using the method of model simulation to analyze the impact of Benchmark's water inlet fluctuation conditions on oxidation ditch aeration conditions and its impact on the removal of organic matter. There are also researchers Synchronous nitrification and denitrification process using oxidation ditch process, to achieve effective removal of high-concentration wastewater (COD 1500mg / L, ammonia nitrogen 200mg / L) under low dissolved oxygen conditions

[0006] To sum up, the dynamic changes of the water entering the sewage treatment plant will lead to poor or unstable treatment effect during the current process operation, and also cause an increase in the construction cost of the water plant and energy waste during the operation process.

There are no systematic research results on the differences in strategies for realizing simultaneous nitrification and denitrification conditions in oxidation ditch under different influent water quality conditions, and the influence of daily influent water dynamic changes on the operation effect of simultaneous nitrification and denitrification in oxidation ditch and the corresponding control strategies.

At the same time, the research on the influence of the dynamic change of the water entry day is generally the research on the control method and the control model itself. Due to the lack of verification research on actual engineering experiments, it is still difficult for these research results to be applied in actual engineering.

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