Sewage treatment method and device by means of hydrate method

Abstract

The invention discloses a sewage treatment method and device by means of a hydrate method, and belongs to the field of environmental science and engineering. The invention provides a novel and economically feasible sewage treatment device for treating sewage by means of a hydrate. According to the device, heating and heat preservation of a reaction kettle are achieved by controlling temperature by means of a heating and cooling convection mode of a high and low temperature thermostat air bath, and the reaction kettle can be maintained to work under high and low temperature conditions. A piston rod is provided with a piston educing sleeve, and it is guaranteed that sewage which is untreated in a kettle body after the reaction is completed can be educed out of the kettle body through the piston educing sleeve. The reaction kettle is provided with a magnetic stirring mechanism which can increase the reaction speed and can also simulate the flow state, and therefore reaction media are in a flowing turning state. The generation condition of the hydrate in the device after reaction cooling is conducted can be displayed on a computer terminal through an image pickup system and a circuit. According to the sewage treatment method and device by means of the hydrate method, the structure is simple, processing and manufacturing are easy, the designed structure is compact, reuse can be achieved, operation in the experimental process is convenient, and simplicity and applicability are achieved.

Description

technical field [0001] The invention relates to a hydrate method sewage treatment method and device, belonging to the field of environmental science and engineering. Background technique [0002] my country is a country with a shortage of water resources. In recent years, the phenomenon of water shortage in many areas has gradually increased. At the same time, my country's sewage discharge has increased year by year. Taking 1997 as an example, the total sewage discharge was 41.6 billion cubic meters, and the chemical oxygen demand (COD) in the sewage was 41.6 billion cubic meters. Cr ) emissions of 17.57 million tons, while the centralized treatment rate is only about 10%. A large amount of sewage is discharged without treatment or without effective treatment. As a result, it pollutes the environment, especially the water environment, on the one hand, and aggravates the shortage of water resources on the other hand. The current sewage treatment technologies mainly include ...

AI Technical Summary

Problems solved by technology

Among them, the chemical precipitation method can only remove the pollutants that are easy to form precipitates, and has the disadvantages of secondary pollution caused by the addition of chemicals and a large amount of sludge; the electrochemical method requires continuous consumption of electrode materials, and the electrodes are easily passivated. High cost; the amount of adsorbent used in the adsorption method is huge, the cost is high, and the adsorbent is difficult to restore; the membrane separation method has high requirements for sewage water quality, strong pertinence, and high operating costs

In short, the existing sewage treatment technology is only aimed at removing certain pollutants, which has high requirements for water quality and poor applicability

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