A Modular Filled Wetland System for Wastewater Treatment of Livestock and Poultry Breeding

Abstract

The invention discloses a modularized filler wetland system used for livestock and poultry breeding wastewater treatment. The standard wetland system is constructed through modularized wetland fillerso as to be used for the livestock and poultry breeding wastewater treatment, so that the calculation accuracy of the hydraulic retention time and the porosity of the technology is achieved, the treatment cost of blocking and adsorbing saturation of an artificial wetland system is reduced, and the pollutant purification effect and the pH stability of water are improved. The system comprises an artificial wetland pond body, a water distribution device, modularized wetland filler and wetland plants, wherein the modularized wetland filler is prepared from silicate cement, red earth, sand stone and water in proportion in a mixing mode, the weight ratio of the silicate cement to the red earth is (1:1)-(1:5), the weight ratio of the silicate cement to the sand stone is (1:4)-(1:8), the weight ratio of the silicate cement to the water is 0.5:(1-2):1, and the preparation method of the modularized wetland filler comprises the steps of dry mixing, wet mixing, mould fixing, compression, demoulding and maintenance. The preparation technology is simple, the cost is low, and large-scale industrial production can be achieved.

Description

technical field [0001] The invention relates to a sewage treatment system, in particular to a modular packing artificial wetland system for livestock and poultry breeding sewage treatment. Background technique [0002] With the rapid and intensive development of livestock and poultry breeding in my country, livestock and poultry breeding sewage has gradually become one of the main sources of water and soil environmental pollution in China. Reached 12.6826 million tons, accounting for 41.9% of the country's total COD emissions; nitrogen and phosphorus emissions were 1.0248 million tons and 160,400 tons, accounting for 21.7% and 37.9% of the country's total nitrogen and phosphorus emissions, respectively. Therefore, how to effectively deal with it has become the focus of our government and society. [0003] Constructed wetland is a sewage ecological treatment process developed in the 1970s. It is a ground similar to a swamp that is artificially constructed and controlled to op...

AI Technical Summary

Problems solved by technology

At present, the filler configuration of the constructed wetland system used for livestock and poultry breeding sewage treatment mainly depends on the artificial accumulation of different types of materials. The filler particle size and filler porosity simulation test is used to roughly control the filler accumulation method. Therefore, it is impossible in this mode. Standardization realizes the effectiveness of filler configuration, and the high content of suspended solids in livestock and poultry wastewater will also challenge the blockage and adsorption saturation of traditional wetlands. Once blockage and adsorption saturation occur, it is impossible to accurately determine the location of blockage and saturation, and due to accumulation The implementation of the configuration method cannot realize effective and quick cleaning of the wetland system, and can only be solved by replacing large-scale fillers, which is time-consuming and laborious

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