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A zero discharge device for high-salt and high-ammonia-nitrogen wastewater

A high-ammonia-nitrogen, zero-discharge technology, applied in the direction of water pollutants, water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problems of substandard discharge and low recovery rate of water resources, so as to improve recovery rate and yield The effect of good water quality and prolonged continuous and stable operation

Active Publication Date: 2016-09-21
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention aims to provide a zero-emission device for treating high-salt and high-ammonia-nitrogen wastewater, mainly to solve the problem of substandard discharge and low recovery rate of water resources in the current device when treating high-salt and high-ammonia-nitrogen wastewater. And other issues

Method used

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  • A zero discharge device for high-salt and high-ammonia-nitrogen wastewater

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Embodiment 1

[0046] The zero discharge device for high-salt and high-ammonia-nitrogen wastewater involved in this embodiment is as follows: figure 1 shown.

[0047] The main components of the zero discharge device include: membrane absorption raw water tank 2: used to store raw water to be absorbed by the membrane; membrane absorption feed pump 3: used to pump raw water to be absorbed by the membrane into the membrane absorption module; membrane absorption module 4: It is used to separate the gas in the raw water; the absorption liquid tank 6: is used to store the absorption liquid required for the membrane absorption process; the absorption liquid feed pump 7: is used to pump the absorption liquid into the membrane absorption module; the nanofiltration raw water tank 8: uses Used to store the salt solution to be nanofiltration; nanofiltration raw water pump 9: used to pump the salt solution to be nanofiltration into the nanofiltration membrane module; nanofiltration membrane module 10: us...

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Abstract

The invention provides a zero release device of high-salt high-ammonia-nitrogen waste water. The zero release device is mainly used for solving problems of conventional devices that discharge standards are not reached, and water resource recovery rate is low in high-salt high-ammonia-nitrogen waste water treatment. The zero release device is a membrane coupling device, and mainly comprises a membrane absorption unit, a nanofiltration unit, a forward osmosis unit, and a cooling crystallization unit; the membrane absorption unit is connected with the nanofiltration unit, the nanofiltration unit is connected with the forward osmosis unit, the forward osmosis unit is connected with the membrane absorption unit and the cooling crystallization unit, and a plurality of circulation loops are formed via connection of the units. The zero release device is easy for operation, and is easy for realization. The zero release device can be used for solving processing problems of high-salt high-ammonia-nitrogen waste water effectively, water recovery rate is high, and quality of obtained water is high. The zero release device is used for circulating condensation of high-salt high-ammonia-nitrogen waste water, almost no concentrated water is discharged, and recovery of water resource of high-salt high-ammonia-nitrogen waste water is realized as far as possible.

Description

technical field [0001] The present invention relates to a zero-discharge device and method for treating wastewater using membrane separation technology, more specifically, to a zero-discharge device for treating high-salt and high-ammonia-nitrogen wastewater using membrane absorption + nanofiltration + forward osmosis + cooling crystallization coupling technology and methods. Background technique [0002] Membrane absorption is a new type of absorption process that combines membrane and ordinary absorption. The technology mainly uses microporous hydrophobic membranes. In the membrane absorption method, the mixed gas and the absorption liquid are not in direct contact, and the two flow on both sides of the membrane respectively. The microporous membrane itself has no selectivity, but only plays the role of isolating the mixed gas and the absorption liquid. The micropores on the microporous membrane are large enough to theoretically allow the gas molecules separated on one s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/08C02F1/44C02F101/16
CPCC02F1/44C02F1/442C02F1/445C02F9/00C02F2101/16
Inventor 张新妙栾金义彭海珠
Owner CHINA PETROLEUM & CHEM CORP
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