Farmland fertilization system of potato starch process water and application method thereof

Abstract

The invention provides a farmland fertilization system of potato starch process water and an application method thereof. The invention has the following process flows: (1) production water for washing starch and potato juice are mixed to form the process water by a centrifugal screen group and a swirler group and the process water enters an anti-seepage storage pool of the factory; (2) natural biological aeration treatment is performed for the process water of potato starch in the anti-seepage storage pool of the factory; (3) the process water after natural biological aeration treatment enters the field sub-pools by a pump station and a underground pipe network; (4) after the process water is diluted with clear water in a proportion of 1:1-1:3, in the field sub-pools, the diluted process water is used for farmland spray irrigation by a pressurizing pump station and a branch pipe network. In the invention, rich water farmland spray irrigation is used without affecting the cultivating area, thereby overcoming the deficiency that flooding is limited by farmland terrain. The spraying amount of the process water can be adjusted according to different farmland terrains so that the fertilizer efficiency of soil is uniform. Clear water dilutability of 1:1-1:3 is adopted, thereby saving the water resources effectively.

Description

Technical field: [0001] The invention relates to a farmland fertilization system and an application method, in particular to a potato starch process water farmland fertilization system and an application method. Background technique: [0002] Treating the process water produced by the potato starch processing industry as industrial wastewater is a major industry problem currently in the potato starch processing industry. With the strengthening of environmental management of industrial enterprises by the state, most potato starch processing enterprises are facing severe difficulties in survival. . At present, according to the country's traditional industrial wastewater treatment method (establishing biological anaerobic and aerobic wastewater treatment plants), it is very difficult to implement for the potato starch industry, as follows: [0003] 1. In the potato processing industry, due to the seasonality of raw materials, the actual production time is very short, generally...

AI Technical Summary

Problems solved by technology

The sewage treatment process, whether it is anaerobic method or aerobic method, requires a working temperature of about 25°C, otherwise there will be no treatment effect

Therefore, even if the sewage treatment plant is built, it cannot be used normally

[0005] 3. The existing potato starch enterprises in my country generally have a standard production line, processing 600-700m of potatoes per day 3 , daily water consumption 1000-1200m 3 , the annual production period is at most 60-80 days. If a sewage treatment plant is built, the total investment will be more than 7 million yuan. If it is combined with protein recovery and phosphorus removal equipment, the investment will reach more than 10 million yuan, which is equivalent to a starch enterprise. 80% of the production line, purchase 200% of the domestic production line, and the operating utilization rate is less than 20%, such investment requirements are unimaginable for potato processing enterprises

The disadvantage is that the channel water diversion is limited by the topography of the farmland, and at the same time it will occupy part of the cultivated area of ​​the farmland; a large amount of clean water is not conducive to saving water resources

[0008] The disadvantage of the existing foreign technology is that the transportation cost of the tank truck is high, and it is not suitable for the management mode of decentralized agriculture in poverty-stricken areas

[0009] The disadvantages of the existing domestic technology are: (1) the method of flood irrigation is limited by the topography of the farmland; (2) the way of channel water diversion is used to occupy the cultivated area of ​​the farmland; (3) the dilution of a large amount of clear water is not conducive to saving water resources; (4) fertilizer and water Uneven dispersion leads to uneven fertilizer efficiency in farmland and may also cause soil compaction

Images