Membrane distillation type water treating apparatus using solar energy or afterheat

Abstract

A membrane distillation apparatus using solar energy or afterheat to treat water is composed of membrane assembly, solar heat or afterheat collector, more than one circulating pumps and its driver, and pipeline. Its advantages are no need of electric energy, and continuous treatment of water.

Description

Technical field: [0001] The invention belongs to the technical fields of heat energy utilization, water treatment and environmental protection, and in particular relates to a membrane distillation water treatment device which effectively utilizes solar energy or waste heat. Background technique: [0002] Water treatment devices are used in industrial production as well as in people's daily life and work. At present, there are many inventions of water treatment devices. These devices can be roughly divided into four categories: ①The factory conducts centralized treatment of water, and then disperses it to various water demand points. For example, the purified water that is often drunk at present belongs to this category; ②The tap water can be drunk after a certain filtration and disinfection. , this type of device is small in size, long in life, basically does not need electric energy, and is very convenient to use in homes and offices; ③The water is heated to about 100°C by...

AI Technical Summary

Problems solved by technology

Although these solar distillers are simple in structure and easy to operate and maintain, there are some problems in practical applications, such as leakage loss of water vapor, loss of condensed water droplets re-evaporating or dripping into the water tank, and Sensible heat loss due to discharge concentration necessary to maintain the balance of salt in the distiller, etc.

The most important thing is that the output of this type of distillation method is too small, and the output is generally 0.1-1.5kg / (m 2 d), the fresh water output of the most efficient still does not exceed 5.0kg / (m 2 d) And it is basically unable to work and produce during the time period when solar energy is insufficient such as at night, and cannot continuously carry out solar distillation

[0004] In addition, in some factories, such as petrochemical enterprises, there is a lot of industrial waste heat, most of which are discharged into the atmosphere, and the wastewater treatment in production and life requires a large amount of electric energy, and these waste heat cannot be effectively used, which increases the cost of production. cost

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