Domestic sewage treatment device

Abstract

The invention discloses a domestic sewage treatment device and belongs to the field of water treatment equipment. The domestic sewage treatment device comprises a column treatment box and an organic matter removal box composed of an inner box body and an outer shell body. A filter layer and a rotating paddle on the upper surface of the filter layer are arranged in the column treatment box. A soliddebris discharge passage passes through the side wall of the column treatment box. A free end of a pushing blade is provided with a pushing block with a large curved surface. The pushing blade is provided with a box filled with sands. A vacuum chamber is formed between the inner box body and the outer shell body. Ultraviolet lamps are uniformly arranged in the vacuum chamber. A central shaft of the inner box body is provided with a gas supply pipe for transporting ozone. The gas supply pipe is connected to stirring through pipes at equal intervals along the circumference. The rear side of thestirring through pipe along the rotation direction is provided with an air vent. Activated carbon is arranged in the inner box body. The bottom of the organic matter removal box is connected to a recovery box and the joint is provided with a switch mechanism. The domestic sewage treatment device can well remove solids and organics in sewage.

Description

technical field [0001] The invention relates to the field of water treatment equipment, in particular to a domestic sewage treatment device. Background technique [0002] Domestic sewage is the wastewater discharged from residents' daily life, mainly from residential buildings and public buildings, such as residences, institutions, schools, hospitals, shops, public places and industrial enterprise toilets. The pollutants contained in domestic sewage are mainly organic matter (such as protein, carbohydrates, fat, urea, ammonia nitrogen, etc.) and a large number of pathogenic microorganisms (such as parasite eggs and intestinal infectious viruses, etc.). The organic matter present in domestic sewage is extremely unstable and easily rots to produce stench. Bacteria and pathogens reproduce in large numbers using organic matter in domestic sewage as nutrients, which can lead to the spread of infectious diseases. Therefore, domestic sewage must be treated before discharge, and d...

AI Technical Summary

Problems solved by technology

But it also has the following disadvantages: 1. Only rely on the filter funnel to filter solid debris, and the filtering function is not detailed enough, resulting in poor filtering effect on solid debris in domestic sewage; 2. The through hole used to discharge solid debris It is always in communication with the inner cavity of the column treatment box. In the process of filtering domestic sewage, a certain amount of water is inevitably discharged along the through hole, which reduces the working accuracy of the device.

The decomposition treatment of anaerobic microorganisms uses the action of anaerobic bacteria. The anaerobic treatment process can be divided into hydrolysis stage, acidification stage and methanation stage. The hydrolysis process is slow and affected by many factors at the same time. It is anaerobic decomposition. In the rate-limiting stage, anaerobic treatment usually takes a long time, which is not conducive to improving the efficiency of sewage treatment

In addition, domestic sewage also contains organic pollutants that are difficult to remove by biological methods and other chemical methods, such as artificially synthesized organic compounds such as color, odor, and synthetic detergents. The removal of organic matter in domestic sewage by microbial decomposition is not enough comprehensive

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