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A method and device for treating waste water containing organic matter

A technology for organic matter and wastewater, applied in separation methods, chemical instruments and methods, multi-stage water/sewage treatment, etc., can solve the problems of increased energy consumption of evaporation systems, scaling of evaporators, and reduced energy efficiency coefficients of mechanical steam compressors, etc. Achieving efficient heat exchange, avoiding scaling and reducing the risk of scaling

Active Publication Date: 2020-03-17
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

In this method, a multi-effect evaporator can be installed in the evaporation system, which makes the application field of the MVR plate evaporation system wider. However, as the number of evaporation effects in the evaporation system increases, the energy efficiency coefficient of the mechanical vapor compressor will decrease, which will reduce the energy consumption of the evaporation system. Increase
[0007] CN202315333U and CN203170039U disclose a steam mechanical compression evaporation equipment. This utility model effectively utilizes the secondary steam generated by the evaporator. The latent heat of the secondary steam increases after the pressure is lifted, and the latent heat of the steam after the pressure is used to heat the waste water to achieve the recovery of water. For the purpose of resources, this method has obvious energy-saving effect, but there is a problem of fouling in the evaporator during the application of the equipment

Method used

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  • A method and device for treating waste water containing organic matter
  • A method and device for treating waste water containing organic matter
  • A method and device for treating waste water containing organic matter

Examples

Experimental program
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Embodiment 1

[0069] use figure 1 The device, the falling film evaporator adopts figure 2 In the device, the organic wastewater used is acrylonitrile production wastewater. The Kjeldahl nitrogen content in the acrylonitrile wastewater is 4050mg / L, and the boiling point of the wastewater is 100℃. When the wastewater evaporates more than 80wt% of water, the raw wastewater treatment capacity is 15t / h, the normal temperature wastewater is preheated to 99°C through the preheater 2, mixed with the concentrated liquid at 104°C, and enters the evaporator 6. The flow ratio of raw material wastewater and concentrated liquid wastewater is 3:1 to 1.5. The evaporation temperature of the wastewater in the evaporator 6 is 100°C, and the compression ratio of the vapor compressor 8 is 1.5. The evaporation temperature in the fouling device 13 is 104°C, two scrapers are set in the fouling device 13, the rotating speed of the scrapers is 360r / min, and the dirt is continuously discharged by the dirt pump. The...

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Abstract

The invention provides a method and device for treating wastewater containing organic matters. The device comprises a wastewater pre-heater, an evaporator, a scaling device, a steam compressor and a condensed water collector. The invention further provides the method for treating the wastewater containing the organic matters by adopting the device. The method and device for treating the wastewater, provided by the invention, have the advantages of safety and reliability, simple equipment, low operation cost, obvious energy-saving effect and the like.

Description

Technical field [0001] The invention relates to a method and device for processing wastewater containing organic substances in the technical field of environmental protection and energy saving, and specifically to a method and device for processing wastewater containing polymer organic compounds in refining and chemical industries. Background technique [0002] Organic wastewater mainly comes from the chemical industry, road deicing, food processing and other fields. It also includes printing and dyeing wastewater, petroleum extraction and processing wastewater, papermaking wastewater, and pesticide industry wastewater. The total amount of high-salt organic wastewater is huge and is increasing year by year. If it is not treated before discharge, the high concentration of soluble inorganic salts and difficult-to-degrade toxic organics in the wastewater will cause serious environmental pollution and damage the soil, surface water, and groundwater. Therefore, in today's water short...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C02F1/04B01D1/22C02F101/30
Inventor 王筱喃廖昌建赵利民王海波马和旭王晶晶
Owner CHINA PETROLEUM & CHEM CORP
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