Total phosphorus water quality soft measurement and predication method

Abstract

The invention relates to a field of environment monitoring and discloses a total phosphorus water quality soft measurement and predication method. The method includes acquiring data values of multiplewater quality monitoring indexes of a to-be-measured water environment, wherein the number of the acquired data values of each water quality monitoring index is plural and at least one among the water quality monitoring indexes is TP; selecting a plurality of water quality monitoring indexes from the water quality monitoring indexes except TP and forming the data values of the selected water quality monitoring indexes into a data sample set, dividing the data sample set into a training set and a testing set, training the training set by utilizing a fuzzy neural network algorithm and acquiringa TP soft measurement model; utilizing the testing set to test the TP soft measurement model and acquiring a testing result; repeating model establishment and model testing until an acquired testingresult meets preset conditions, and taking the TP soft measurement model meeting the preset conditions as the final soft measurement model. The obtained model is accurate in predication results and reduces the TP water quality soft measurement and predication cost.

Description

technical field [0001] The invention relates to the field of environmental monitoring, in particular to the water quality soft sensor prediction technology of total phosphorus. Background technique [0002] As we all know, my country's water resources are very scarce, and the per capita share is only 1 / 4 of the world's average level. At the same time, there are serious water pollution problems, such as water pollution, water eutrophication, urban black and odorous water bodies, groundwater pollution, etc. make the water resource problem more prominent. In rural areas, nearly 96% of my country's rural sewage, about 8 to 9 billion t / a, has not been treated, causing serious rural environmental pollution and river and sea basin pollution. In cities, black and smelly water bodies have become an urban disease, and almost all cities have no pollution. One survived. Most rivers in China are polluted to varying degrees. It is urgent to alleviate the shortage of water resources, inc...

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Problems solved by technology

However, since the sewage treatment system is a complex biochemical treatment system, which is a typical nonlinear, multivariable, unstable, and large time-delay system, with many and uncertain interference factors, it is difficult to directly develop and improve online monitoring instruments, and Monitoring costs (one-time input and reagent costs) are high and difficult to reduce

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