Sewage prevention and treatment method for rivers and lakes

Abstract

The invention relates to a sewage prevention and treatment method for rivers and lakes. A sewage prevention and treatment device for rivers and lakes is employed. The sewage prevention and treatment device for rivers and lakes comprises a water bucket, a fishing device and a filtering device. The fishing device is mounted at the upper end of the water bucket, the filtering device is mounted at thelower end of the water bucket, and the fishing device and the filtering device are opposite to each other. Design philosophy of a multi-stage filtering treatment structure for sewage prevention and treatment for rivers and lakes, the filtering degree of sewage is further improved. The device can integrally filter light large-sized impurities and small-sized impurities contained in sewage successively and separately. The fishing device can fish the filtered light large-sized impurities timely, so that the probability that the filtering structure is blocked as a result of accumulation for manytimes is avoided.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a sewage treatment method for the prevention and control of rivers and lakes. Background technique [0002] River pollution refers to the direct or indirect introduction of substances or energy into the river environment due to human activities, causing damage to river biological resources, damaging river water and river environmental quality, and endangering human health. It is also a type of water pollution. The degree changes with time, and the diffusion is fast, and the pollution has a great impact. The pollutants are mainly industrial wastewater, domestic sewage, farmland drainage and urban garbage, etc., which can lead to a decrease in the oxygen content in the water. After a period of time, the microorganisms that need oxygen in the water gradually It is these aerobic microorganisms that can decompose organic matter and maintain the self-purification ability of ri...

AI Technical Summary

Problems solved by technology

[0002] River pollution refers to the direct or indirect introduction of substances or energy into the river environment due to human activities, causing damage to river biological resources, damaging river water and river environmental quality, and endangering human health. It is also a type of water pollution. The degree changes with time, and the diffusion is fast, and the pollution has a great impact. The pollutants are mainly industrial wastewater, domestic sewage, farmland drainage and urban garbage, etc., which can lead to a decrease in the oxygen content in the water. After a period of time, the microorganisms that need oxygen in the water gradually It is these aerobic microorganisms that can decompose organic matter and maintain the self-purification ability of rivers and lakes. The chain reaction triggered by their death is that rivers and lakes become more and more black, smelly, accumulate toxins, and eventually harm People and animals, and non-degradable pollutants such as plastics will not only reduce the oxygen content of water, but also cause aquatic organisms to eat and die. Water pollution not only endangers human beings, but also brings huge losses to fisheries. Seriously The death of fish and shrimp also interferes with fish reproduction, and the production and quality of fish are greatly reduced. Sewage also pollutes farmland and crops, reducing agricultural production. Water pollution also causes other environmental degradation, affecting people's physical and mental health. The following issues arise during processing:

[0003] 1. When using a single filter structure to filter sewage, it is easy to neglect the filtration of light and large-volume debris such as plastics or to filter the small-volume debris incompletely, and the filtered light and large-volume debris If it is not cleared in time, the filter structure will be blocked after repeated accumulation, and the method of manual salvage will easily complicate the work operation. At the same time, when the debris is transferred, the sewage it carries will easily drip around On the device, it is easy to cause pollution to the device and the working environment;

[0004] 2. The single-stage filtration used for small-volume debris in sewage tends to have a low degree of filtration, and after the filtration is completed, small-volume debris such as sand and gravel tends to remain inside the filter device. These debris will not only reduce The filtration effect of subsequent filtration will also form debris scabs inside the filter device after a long time, and at the same time, the filtering structures in the filter device cannot be replaced or disassembled and cleaned in time, thereby reducing the filtering capacity of these structures

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