A process and system for treating wastewater

A technology for treating waste water and waste water, which is applied in the direction of heating water/sewage treatment, water/sludge/sewage treatment, water pollutants, etc., and can solve problems such as environmental pollution, soil and surface water, groundwater damage, etc.

Active Publication Date: 2020-07-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

If it is not treated before discharge, the high concentration of soluble inorganic salts and refractory toxic organic substances in wastewater will cause serious environmental pollution and cause damage to soil, surface water, and groundwater.

Method used

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  • A process and system for treating wastewater
  • A process and system for treating wastewater

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Experimental program
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Effect test

Embodiment 1

[0074] use figure 1 In the system, the two-effect evaporator adopts figure 2 In the above structure, the waste water used is ammonium sulfate waste water, the concentration of the raw waste water is 20wt%, and the treatment capacity of the raw waste water is 15t / h. The compression ratio of the compressor 8 is 1.5, and air is used as the non-condensable gas. The concentration of the concentrated solution 10 discharged from the bottom of the first-effect evaporator 5 is 32wt%, and after the concentrated solution 10 is evaporated and concentrated by the second-effect evaporator, the concentration of the discharged concentrated solution 15 is 45wt%. The temperature of the condensed water 21 after heat recovery is about 45°C, and the recovered amount of condensed water is 8.3 t / h.

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Abstract

The invention provides a technology and a system used for processing waste water. The system comprise a waste water preheater, a first effect evaporator, a second effect evaporator, a vapour compressor, a condensed water collector, and a noncondensable gas compressor. The invention also provides the technology used for processing waste water using the system. The waste water processing technology and the system are safe and reliable; equipment is simple; operation cost is low; energy saving effect is obvious; and 50 to 95% of water resource can be recycled.

Description

technical field [0001] The invention relates to the technical field of environmental protection and energy saving, in particular to a method and a device for concentrating and treating waste water containing salt and high molecular organic matter. Background technique [0002] Highly saline wastewater refers to wastewater with a total saline mass fraction TDS ≥ 1%, which generally belongs to refractory wastewater. Common high-salinity wastewater mainly comes from wastewater discharged from seawater and industrial production wastewater. The desalination treatment processes of high-salt wastewater mainly include electrodialysis, reverse osmosis, ion exchange and evaporation. Organic wastewater mainly comes from chemical industry, road deicing, food processing and other fields, and also includes printing and dyeing wastewater, petroleum mining and processing wastewater, papermaking wastewater and pesticide industry wastewater. The total amount of high-salt organic wastewater ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/04C02F1/08C02F1/02C02F101/30
Inventor 王筱喃王新廖昌建赵利民赵磊王海波
Owner CHINA PETROLEUM & CHEM CORP
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