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A treatment method for wastewater containing high concentrations of organic matter and inorganic salts

A treatment method and technology for organic matter, applied in the fields of energy wastewater treatment, adsorbed water/sewage treatment, water/sewage multi-stage treatment, etc., can solve problems such as high treatment costs, polluted water environment, etc. The effect of less pollution and efficient adsorption and regeneration performance

Active Publication Date: 2016-02-17
DONGGUAN SANRENXING ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Whether it is advanced treatment of high-concentration wastewater produced by membrane filtration or other methods, if it is not properly treated, it will inevitably cause excessive discharge and pollute the water environment.
At present, there is no low-cost treatment method for high-concentration wastewater containing organic matter such as oil and inorganic salts. Usually, it needs to be concentrated through multiple evaporations and reverse osmosis. The liquid evaporates completely, but this will inevitably cause extremely high treatment costs. Therefore, the industry urgently needs to provide a treatment method that can effectively treat wastewater containing high concentrations of organic and inorganic salts

Method used

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  • A treatment method for wastewater containing high concentrations of organic matter and inorganic salts

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Embodiment 1

[0036] A method for treating wastewater containing high-concentration organic matter and inorganic salts, comprising the following steps:

[0037] In step A, the wastewater containing high-concentration organic matter and inorganic salt is introduced into a filter for filtration, and the particulate matter in the wastewater is removed to obtain a filtrate; the wastewater containing high-concentration organic matter and inorganic salt has a COD of 1000 mg / L, and the ratio of BOD to COD is 0.01, The pH is 5, the salt content of the wastewater is 1%, and the ammonia nitrogen content is 1000mg / L;

[0038] In step B, the filtrate is introduced into a reverse osmosis membrane device for processing to obtain product water and high-concentration organic matter and inorganic salt concentrated water, and the product water is directly recycled; the osmotic membrane in the reverse osmosis membrane device is an SRO membrane;

[0039] Step C, introduce high-concentration organic matter, ino...

Embodiment 2

[0046] The difference between this embodiment and Embodiment 1 is that step E of this embodiment also includes a temperature-raising treatment process, where the degreasing medium-concentrated water is first introduced into the condenser, and the degreasing medium-concentration water is heated to raise the temperature Concentrated water, and then the heated concentrated water is introduced into the evaporator to obtain crystalline solid powder and mixed gas.

[0047] The rest of this embodiment is the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0049] A method for treating wastewater containing high-concentration organic matter and inorganic salts, comprising the following steps:

[0050] In step A, the wastewater containing high-concentration organic matter and inorganic salt is introduced into the filter for filtration, and the particulate matter in the wastewater is removed to obtain a filtrate; the wastewater containing high-concentration organic matter and inorganic salt has a COD of 1500 mg / L, and the ratio of BOD to COD is 0.05, The pH is 7, the salinity of the wastewater is 2%, and the ammonia nitrogen content is 1300mg / L;

[0051] In step B, the filtrate is introduced into a reverse osmosis membrane device for processing to obtain product water and high-concentration organic matter and inorganic salt concentrated water, and the product water is directly recycled; the osmotic membrane in the reverse osmosis membrane device is an SRO membrane;

[0052] Step C, introduce high-concentration organic matter, inorg...

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Abstract

The invention relates to the technical field of sewage treatment, in particular to a treatment method for wastewater containing high concentrations of organic matter and inorganic salts, comprising the following steps: introducing the wastewater into a filter and a reverse osmosis membrane device for treatment to obtain produced water and concentrated water; Water is introduced into the struvite reactor, and then an appropriate amount of magnesium salt, MgO and phosphate is added to the struvite reactor to obtain agricultural fertilizers and medium-concentrated water; the medium-concentrated water is introduced into the graphene adsorption tower for adsorption and filtration to remove oil and other organic matter ;Introduce the medium-concentrated water after deoiling into the evaporator to obtain crystalline solid powder and mixed gas; introduce the mixed gas into the gas membrane separator for separation to obtain pure water and enriched mixed gas; introduce the enriched mixed gas into the condenser Condensation treatment is carried out to obtain water and non-condensable gas; the non-condensable gas is introduced into a microwave ultraviolet catalytic reactor to decompose to obtain CO2 and H2O. The invention can effectively treat waste water containing high-concentration organic matters and inorganic salts, has simple process, less environmental pollution, and turns waste into wealth.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a treatment method for wastewater containing high-concentration organic matter and inorganic salts. Background technique [0002] At present, my country's ecological environment is deteriorating. In some ecologically fragile areas or areas without environmental capacity, the total amount of enterprises has been controlled, and even the discharge of sewage is prohibited, so that the water ecology can gradually restore the original water body function. [0003] Whether it is high-concentration wastewater produced by advanced treatment membrane filtration or high-concentration wastewater produced by other methods, if it is not properly treated, it will inevitably cause excessive discharge and pollute the water environment. At present, there is no low-cost treatment method for high-concentration wastewater containing organic matter such as oil and inorganic salts. Usually, i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10B01D53/86C02F1/44C02F1/28
CPCY02W10/33Y02W10/37
Inventor 邓杰帆焦伟丽曾庆波
Owner DONGGUAN SANRENXING ENVIRONMENTAL TECH CO LTD