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Energy-saving and consumption-reducing zero-emission treatment method for isosorbide production wastewater

A technology for producing wastewater and isosorbide, which can be used in water/sewage treatment, heating water/sewage treatment, oxidized water/sewage treatment, etc. It can solve the problems of not reaching zero discharge, difficult to handle concentrated brine, and large sludge. , to achieve good water quality, significant economic and environmental benefits

Active Publication Date: 2020-03-24
山东济清科技服务有限公司
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Problems solved by technology

However, conventional treatment methods will generate a large amount of sludge, and the final concentrated brine is difficult to treat, failing to achieve the goal of zero discharge

Method used

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  • Energy-saving and consumption-reducing zero-emission treatment method for isosorbide production wastewater

Examples

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Effect test

Embodiment 1

[0029] A method for treating isosorbide production waste water with energy saving, consumption reduction and zero discharge, comprising the following steps:

[0030] 1. Filter the wastewater in the wastewater pool through a plate and frame filter press to remove insoluble suspended matter and enter the storage tank; enter the high-level adjustment pool through the 1# lifting pump; the installation ground is the zero line, and the relative elevation of the wastewater pool is -1.00 meters. The relative elevation of the height adjustment pool is 9.00 meters.

[0031] 2. The liquid in the high-level adjustment tank flows to the 1# plate heat exchanger by itself, absorbs the heat in the heat exchanger, raises the temperature to 40-45°C, and then enters the 2# plate heat exchanger, absorbs the latent heat in the heat exchanger and further heats up to 45-55°C, and then enter the scraped film evaporator; the relative elevation of the 1# plate heat exchanger is 9.00 meters, the relativ...

Embodiment 2

[0038] A kind of isosorbide production wastewater energy-saving and consumption-reducing zero-discharge treatment method, its steps are as described in embodiment 1, the difference is that in step 1, when the waste water enters the plate-and-frame filter press for filtration, the waste water tank and the plate-and-frame filter press An electromagnetic metering pump is installed between the machines. In step 4, an electromagnetic metering pump is installed between the scraped film evaporator and the 3# plate heat exchanger to accurately control the amount of evaporated water and ensure normal production.

Embodiment 3

[0040] A kind of isosorbide production wastewater energy-saving and consumption-reducing zero-emission treatment method, its steps are as described in embodiment 1, the difference is, in step 2, 1# gas-water separator is connected with vacuum pump, as figure 1 As shown, the vacuum pump assists the water leg to complete the liquid flow under the vacuum.

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Abstract

Belonging to the technical field of wastewater treatment, the invention relates to an energy-saving and consumption-reducing zero-emission treatment method for isosorbide production wastewater. The method includes: subjecting wastewater to primary plate frame filtering, then using three groups of heat exchangers and a scraper film evaporator for low-pressure distillation, utilizing the self-flowing effect of water log to generate high vacuum between the heat exchangers and the ozone reaction so as to enable evaporation at low temperature (50-70DEG C), recycling most thermal energy consumed inthe evaporation process by the three groups of heat exchangers for further energy saving and consumption reduction, and then conducting three-stage ozone deep treatment to make the effluent water reach the national grade 1 discharge standard. The whole process is energy-saving and consumption-reducing, and has remarkable economic benefits and environmental benefits.

Description

technical field [0001] The invention relates to a treatment method for isosorbide production wastewater with energy saving, consumption reduction and zero discharge, and belongs to the technical field of wastewater treatment. Background technique [0002] Isosorbide production workshop wastewater pH value = 11.6, conductivity = 22500μs / cm, CODcr = 152000mg / L, BOD 5 =88400mg / L, SS=3600mg / L, TDS=12.3%, easy to foam. The waste water has high salt content, high organic matter content, high alkalinity, and the main components are sorbitol, alkylbenzenesulfonic acid, sodium hydroxide, isosorbide and other carbohydrates. At present, there are few reports on the treatment method of isosorbide production wastewater. The conventional treatment method is to carry out biological treatment first, then carry out Fenton advanced treatment, and finally carry out reverse osmosis treatment, and the treated water part is reused or discharged. However, conventional treatment methods will gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F9/00C02F1/001C02F1/08C02F1/78C02F2201/782
Inventor 王正顺杨桂花陈嘉川王源
Owner 山东济清科技服务有限公司
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