Method and system for treating waste

Abstract

The invention discloses a method and system for treating waste; the waste includes at least one of feces and kitchen waste. The method includes the steps: (1) performing solid-liquid separation treatment of the waste, to obtain solid waste and liquid waste; (2) performing facultative aerobic treatment on the solid waste for 12-17 days with a composite microbial inoculum, to obtain an organic fertilizer; and (3) performing biological decomposition of the liquid waste for 12-17 days with microalgae, to obtain pre-treated water. The method can realize continuous and effective resourceful treatment on the feces or / and the kitchen waste, toxic, harmful, inflammable and explosive gases are not produced in the treatment process, and besides, treatment costs and energy consumption can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, in particular, the invention relates to a method and system for treating waste. Background technique [0002] The degree of civilization of a country can be seen from its toilet culture. The toilet plays an important role in human's daily life. It receives and processes most of the excreta produced by people's daily physiological activities, and these feces are discharged into urban sewers and become the main source of pollutants in domestic sewage. [0003] The most commonly used toilet today is the flush toilet. In areas with sound urban infrastructure, human excrement is transported to the sewage treatment plant for decomposition and treatment through the path of "toilet to urban sewer". This process consumes a lot of water. Especially in water-scarce areas, the water supply and drainage pipe network is underdeveloped, the sewage treatment is inconvenient, and it is easy to cause en...

AI Technical Summary

Problems solved by technology

Starting from different perspectives, different types of environmentally friendly toilets such as microbial anaerobic digestion, physical purification, water recycling, manure packaging and electrochemical degradation have appeared in the society, but from the perspectives of energy saving, hygiene, safety and cost, etc. , it is still difficult to meet the requirements, which also poses new challenges to the development of the environmental protection toilet market

[0004] Kitchen waste includes leftovers, vegetable leaves, vegetable stalks, etc. In the prior art, it is usually powdered and then discharged through the sewer. Although this method solves the problem of kitchen waste accumulation, a large amount of water must be used to produce waste powder. If it is washed away, it will inevitably greatly increase the consumption of tap water, which will not only increase the water fee, but also aggravate the crisis of water shortage.

And the waste is mixed in the water and discharged. If things go on like this, especially after the sewage enters the horizontal pipe, it is easy to deposit in the pipe, resulting in the blockage of the sewer. At the same time, the cooking method in our country will produce a lot of greasy, which will adhere to the inner wall of the pipe, making it easier to breed insects And cause blockage, resulting in increased processing difficulty, energy consumption and cost

In addition, the crushing process will inevitably bring noise pollution and power consumption

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