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A treatment system and method for high-salt and high-concentration organic wastewater

A technology for organic wastewater and treatment systems, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, separation methods, etc. Ease of incineration, savings in disposal costs, reduction in equipment investment and operating costs

Active Publication Date: 2020-06-23
湖南绿网环保科技有限责任公司
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Problems solved by technology

However, the dilution method consumes a lot of water, and the direct incineration method has high energy consumption, and the salt contained in it becomes molten during the high-temperature incineration process, causing problems such as coking in the incinerator, waste heat recovery and tail gas treatment equipment blockage.

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  • A treatment system and method for high-salt and high-concentration organic wastewater
  • A treatment system and method for high-salt and high-concentration organic wastewater
  • A treatment system and method for high-salt and high-concentration organic wastewater

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0030] The high-salt and high-concentration organic wastewater treated in this example uses the oily waste lye in the propylene oxide co-production styrene (POSM) production process, and the wastewater contains a large amount of benzyl alcohol, acetophenone, styrene, propylene glycol, propylene oxide, ethyl alcohol, and Benzene and other organic matter, the total dissolved solids in wastewater are 6% to 8%, and the concentration of chemical oxygen demand (COD) in wastewater is 230,000 to 300,000mg / L.

[0031] refer to Figure 1-Figure 3 , the high-salt and high-concentration organic wastewater treatment system of this embodiment includes an evaporation concentration unit, an electrocatalytic oxidation unit, and an incineration unit, wherein the evaporation and concentration unit concentrates the high-salt and high-concentration organic wastewater, and t...

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Abstract

The invention relates to a treatment system for high-salt high-concentration organic wastewater and a method. The system comprises an evaporation concentration unit, an electrocatalytic oxidation unitand a burning unit, wherein the evaporation concentration unit comprises an evaporation concentrator, a separator, a preheater, a condenser, a vacuum pump and a conveying pump; the electrocatalytic oxidation unit comprises a direct current power supply, a circulating cylinder, an electrocatalytic oxidation tank and a drug dosing system; the burning unit comprises a low-temperature burning chamber, a high-temperature burning chamber, a waste heat recovering device and a tail gas purifying device. The invention also provides a treatment method for the high-salt high-concentration organic wastewater. According to the invention, the characteristics of evaporation concentration method, electrocatalytic oxidation method and burning method are combined, the treatment efficiency for the high-salthigh-concentration organic wastewater is high, the adaptability to the concentration change of the wastewater is high, the treatment cost is low and the requirement of wastewater emission after reaching standard is met.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a treatment system and method for high-salt and high-concentration organic waste water. Background technique [0002] With the development of leather, printing and dyeing, pharmaceutical, petrochemical and other industries, the discharge of high-salt and high-concentration organic wastewater is increasing. High-salt and high-concentration organic wastewater refers to organic wastewater containing organic matter and total dissolved solids mass fraction greater than 3.5%. At present, the treatment methods of high-salt and high-concentration organic wastewater include: biochemical treatment after dilution or coagulation sedimentation, adsorption, chemical oxidation, ion exchange and other methods, or treatment by incineration and other technologies. However, the dilution method consumes a lot of water, and the direct incineration method has high energy consumption, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10B01D46/02B01D53/40F23G7/04F23G5/44F23G5/46C02F101/30
Inventor 唐益洲孟勇曹剑胡枚菊周江林王国华
Owner 湖南绿网环保科技有限责任公司
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