Sewage disposal system used for agricultural machinery

Abstract

The invention relates to a sewage disposal system which comprises a sewage collecting pool, a sewage purifying system and a sludge disposal system; the sewage purifying system comprises a sewage pretreatment pool, a coarse sand pool, a medium sand pool and a fine sand pool; the sludge disposal system comprises a sludge filter pressing device, a filter residue drying device and a filter residue calcining device; the sewage collecting pool is connected with the sewage pretreatment pool and the sludge filter pressing device; the sewage pretreatment pool, the coarse sand pool, the medium sand pooland the fine sand pool are communicated in sequence; the sludge filter pressing device, the filter residue drying device and the filter residue calcining device are connected in sequence; the sewagepurifying system and the sludge disposal system are respectively used for performing purifying treatment on sewage and performing re-processing on raw materials in the sewage and precipitates producedby products; the sewage purifying system also comprises a reverse osmosis device which is communicated with the fine sand pool. According to the invention, on one hand, the sewage can be purified, sothat the quality of the discharged water reaches standard; on the other hand, various raw materials in the sewage and residue precipitates of the products can be recycled.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment system for agricultural machinery. Background technique [0002] Agricultural machinery refers to various machinery used in crop planting and animal husbandry production, as well as in the primary processing and handling of agricultural and animal products. Agricultural machinery includes agricultural power machinery, farmland construction machinery, soil tillage machinery, planting and fertilization machinery, plant protection machinery, farmland drainage and irrigation machinery, crop harvesting machinery, agricultural product processing machinery, animal husbandry machinery and agricultural transportation machinery, etc. Since it is inevitable to use water in various production links, especially when cleaning different types of crop products, to avoid contamination of the products. In this way, sewage will be generated. The composition of sewage is...

AI Technical Summary

Problems solved by technology

In this way, sewage will be produced, and the composition of sewage is complex, including raw materials flowing out from cleaning equipment, dust from cleaning the ground, and products in the production process. Such sewage obviously cannot meet the national discharge standards.

[0003] However, the existing sewage treatment system used in the production process of the agricultural machinery field does not classify the sewage, and often has the problems of low sewage purification efficiency and difficult recovery of sediments produced by various raw materials and products in the process of sewage treatment

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