Salt-containing wastewater concentration treatment device with air as medium

A salty waste water and treatment device technology, applied in the field of energy saving and emission reduction, waste water treatment, can solve the problems of high energy consumption, high production cost input cost, unfavorable small-scale production, etc., and achieve simple structure of the device, no consumption of fossil energy, Ease of operation and maintenance

Inactive Publication Date: 2016-06-01
CHANGZHOU UNIV
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  • Application Information

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Problems solved by technology

[0007] The present invention aims at the problems of high energy consumption, high production cost input cost, unfavorable small-scale production, and need to be located in areas with bet

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  • Salt-containing wastewater concentration treatment device with air as medium

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Embodiment Construction

[0012] When the equipment of the present invention is started, the water pump 11 draws the saline waste water from the raw material pool 10 into the system, and leads to the heating module 5 through the plate heat exchangers 2, 3, 4. The raw material is heated to 70-90°C by the heating module 5, and then flows to the packed tower 6, and is evenly sprinkled on the packing in the tower by the nozzle 7 to form water mist; The high-temperature raw material water mist fully contacts with the air on the filler to conduct mass transfer and heat transfer. The air absorbs moisture from an unsaturated state to gradually saturated. At the same time, the temperature of the air is continuously rising, and the moisture absorption capacity is also increasing. The moisture of the raw material evaporates continuously and the concentration rises to achieve the purpose of concentration, and is finally discharged out of the tower. The humid and high-temperature air enters the plate heat exchanger...

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Abstract

The invention discloses a novel salt-containing wastewater concentration treatment device with air as a medium. The novel salt-containing wastewater concentration treatment device consists of a packed tower (evaporator), a plate heat exchanger (condenser) and a heating module (low-grade heat energy and solar energy), wherein a humidification and dehumidification method is adopted; flowing air is taken as a vapor carrier to treat salt-containing wastewater in an evaporation concentration manner; air is humidified by the heated salt-containing wastewater in the packed tower, is fed into the plate heat exchanger according to different temperature gradients in the packed tower after a certain amount of vapor is carried, and is condensed and dehumidified, so that fresh water can be produced; condensation latent heat can be recycled to preheat the salt-containing wastewater. (See the structure chart in the drawings of the description) By adopting the novel salt-containing wastewater concentration treatment device disclosed by the invention, the defects that a conventional treatment method is high in energy consumption, up-front cost and later maintenance cost, production scale requirement, and requirement on foundation facilities in a production area can be avoided.

Description

Technical field: [0001] The invention relates to equipment and technology for concentrating high-salt waste water (total salt content 1% to 3.5%) to obtain fresh water, and belongs to the technical field of waste water treatment, and also belongs to the field of energy saving and emission reduction. Background technique [0002] Fresh water is a basic natural resource and a strategic economic resource, a controlling factor of the ecological environment and an integral part of the country's comprehensive national strength. Only 3% of the water on earth is potable. About 25% of the world's population does not have enough fresh water, and more than 80% of countries face severe water scarcity. With the expansion of drought and desertification in the world, the severity of water resource problems has been exacerbated. [0003] Concentrating saline wastewater is an effective way to deal with the freshwater crisis. Saline wastewater refers to inorganic salt wastewater with a tot...

Claims

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Application Information

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IPC IPC(8): C02F1/16C02F1/14C02F1/08
CPCY02A20/212Y02W10/37C02F1/14C02F1/08C02F1/16
Inventor 张锁龙戎铖
Owner CHANGZHOU UNIV
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