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Low-energy-consumption RO concentration treatment method for evaporating surface moisture at normal pressure and low temperature

A low-temperature evaporation and surface moisture technology, applied in water/sewage treatment, heating water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high energy consumption and high cost of concentrated wastewater, and achieve large heating area, Achieve full utilization and low energy consumption

Pending Publication Date: 2020-05-19
HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
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Problems solved by technology

[0003] When the existing RO wastewater is concentrated and treated, it needs a lot of heat to heat up and evaporate the wastewater. high cost

Method used

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  • Low-energy-consumption RO concentration treatment method for evaporating surface moisture at normal pressure and low temperature
  • Low-energy-consumption RO concentration treatment method for evaporating surface moisture at normal pressure and low temperature

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Embodiment Construction

[0032] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0033] A low-energy RO concentration treatment method by evaporating surface moisture at atmospheric pressure and low temperature, comprising the following steps:

[0034] S1. Using a carrier with a water content of a, adding RO concentrated water to the carrier to increase the water content of the carrier to b, where a<b; where a is 50%-60%, and b is 80%-90%;

[0035] S2, pulverizing the carrier with a moisture content of b, and spreading the pulverized carrier;

[0036] S3, blowing dry hot air to the carrier pulverized in step S2 from bottom to top to heat the water in the carrier, so as to form moist warm air above the carrier, and the moisture content of the carrier becom...

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Abstract

The invention discloses a low-energy-consumption RO (reverse osmosis) concentration treatment method for evaporating surface moisture at normal pressure and low temperature, which comprises the following steps: S1, adding RO concentrated water into a carrier with the moisture content of a to increase the moisture content of the carrier to b (a is less than b); S2, crushing the carrier with the water content of b, and spreading the crushed carrier; and S3, blowing dry hot air to the carrier crushed in the step S2 from bottom to top to heat water in the carrier, so that wet and warm air is formed above the carrier, and the moisture content of the carrier is changed into a. The method has the advantages that, firstly, under the normal pressure condition, water on the surfaces of materials isevaporated at the low temperature (lower than 80 DEG C), and energy consumption is only 10% of that of a sludge drying device; and secondly, impurities in RO concentrated water are mixed with a material (sludge) to form a part of the material, and water is evaporated at low temperature to form condensed water which can be directly recycled.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a low-energy RO concentration treatment method by evaporating surface moisture at low temperature under normal pressure. Background technique [0002] Concentrated water after water reuse in industries such as papermaking, printing and dyeing, and industrial parks is different from seawater desalination and industrial circulating water, because it contains more refractory organic matter, high salinity, and high alkalinity. problem. [0003] When the existing RO wastewater is concentrated and treated, it needs a lot of heat to heat up and evaporate the wastewater. high cost. Contents of the invention [0004] In order to overcome the deficiencies of the prior art, the present invention provides a low-energy RO concentration treatment method that evaporates surface moisture at normal pressure and low temperature. [0005] In order to achieve the above obje...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/04C02F101/30C02F1/44
CPCC02F1/04C02F2101/30C02F1/441
Inventor 阎学明李屹赵经纬丁国良
Owner HANGZHOU TIAN CHUANG ENVIRONMENTAL TECH
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