A wastewater treatment process and system

A wastewater and process technology, applied in the direction of heating water/sewage treatment, etc., can solve problems such as environmental pollution, soil and surface water, groundwater damage, etc., to improve mass transfer and heat transfer efficiency, avoid scaling and blockage, and avoid scaling Effect

Active Publication Date: 2020-05-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 wastewater treatment process and system
  • A wastewater treatment process and system
  • A wastewater treatment process and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] use figure 1 The system, the evaporator adopts figure 2 In the device, the waste water used is ammonium sulfate waste water, the raw waste water concentration is 20wt%, and the raw waste water treatment capacity is 15t / h. The compression ratio of the vapor compressor 8 is 1.5, and air is used as supplementary non-condensable gas. The concentrated liquid 10 discharged from the bottom of the evaporator 5 is 32wt%. After the concentrated liquid 10 is stripped and evaporated by the stripper, the concentrated liquid 15 discharged 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 waste water processing technology and a system. The system comprise a waste water preheater, an evaporator, a stripping tower, a vapour compressor, a heat exchanger, a noncondensable gas compressor, and a condensed water collector. The invention also provides the waste water processing technology using the system. The waste water processing technology and the system are safe and reliable; equipment is simple; operation cost is low; energy save effect is obvious; and 50 to 95% 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): C02F1/04C02F1/08
Inventor 廖昌建王海波赵利民王晶晶朴勇李经伟
Owner CHINA PETROLEUM & CHEM CORP
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