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A waste water treatment process and device for power plant boiler make-up water production

A wastewater treatment and make-up water technology, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of high cost of wastewater recycling and treatment, unfavorable economic benefits, and low wastewater recovery rate To achieve the effect of improving the utilization rate of water resources, increasing the income of enterprises, and saving the occupied area

Active Publication Date: 2016-08-24
LIAOCHENG LUXI CHEM ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing power plant boiler feed water production system, most of the wastewater generated in the production process is directly discharged, which wastes a lot of water resources. In addition, it also causes serious salinization of the land through which the wastewater flows.
Although certain wastewater treatment devices are installed for boiler feed water in some power plants, the recovery rate of wastewater is low and the energy consumption is high, resulting in high cost of wastewater recovery and treatment in the production of boiler feed water in power plants, which is not conducive to the improvement of economic benefits of enterprises

Method used

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  • A waste water treatment process and device for power plant boiler make-up water production
  • A waste water treatment process and device for power plant boiler make-up water production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A waste water treatment process in the production of power plant boiler make-up water, such as figure 1 shown, including the following steps:

[0026] (1) The raw water produced during the production process of boiler feed water in the power plant enters the raw water tank, where the temperature of the raw water is 10°C and the flow rate is 266m 3 / h, the raw water is pumped into the new filter device 1 and the precision filter in turn, and the first-level filtration and the second-level filtration are carried out respectively. and colloid; Among them, after the first stage filtration by the new filter device 1, the water quality SDI value is 4, and the total iron content is 0.1mg / L;

[0027] (2) The filtered water after continuous primary filtration and secondary filtration enters the raw water filter, and multi-stage membrane separation is performed in the raw water filter to separate the filtered water through the filter membrane and the waste water that has not pas...

Embodiment 2

[0033] (1) The raw water produced during the production process of boiler feed water in the power plant enters the raw water tank, where the temperature of the raw water is 10°C and the flow rate is 266m 3 / h, the raw water is pumped into the new filter device 1 and the precision filter in turn, and the first-level filtration and the second-level filtration are carried out respectively. and colloid; Among them, after the first-stage filtration by the new filter device 1, the water quality SDI value is 1.6, and the total iron content is 0.02mg / L;

[0034] (2) The filtered water after continuous primary filtration and secondary filtration enters the raw water filter, and multi-stage membrane separation is performed in the raw water filter to separate the filtered water through the filter membrane and the waste water that has not passed through the filter membrane, The separated filtered water enters the chemical water treatment process, after the ion exchange process removes the...

Embodiment 3

[0038] (1) The raw water produced during the production process of boiler feed water in the power plant enters the raw water tank, where the temperature of the raw water is 10°C and the flow rate is 266m 3 / h, the raw water is pumped into the new filter device 1 and the precision filter in turn, and the first-level filtration and the second-level filtration are carried out respectively. and colloid; Among them, after the first stage filtration by the new filter device 1, the water quality SDI value is 2.4, and the total iron content is 0.05mg / L;

[0039] (2) The filtered water after continuous primary filtration and secondary filtration enters the raw water filter, and multi-stage membrane separation is performed in the raw water filter to separate the filtered water through the filter membrane and the waste water that has not passed through the filter membrane, The separated filtered water enters the chemical water treatment process, after the ion exchange process removes the...

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Abstract

The invention discloses a waste water treatment process in the production of boiler feed water in a power plant, which comprises the following steps: raw water is sequentially input into a new filter device and a precision filter for primary filtration and secondary filtration; after being filtered, it enters the raw water filter Multi-stage membrane separation is carried out, the separated filtered water enters the chemical water treatment process, and the waste water is treated in the waste water recovery device; single-stage membrane filtration is carried out in the waste water recovery device, the reclaimed aquatic products are extracted and used in the circulating water system, and the sewage is discharged into the sewage Discharge after further processing in the processing center. The invention also discloses the device used for processing by adopting the process. Beneficial effects of the present invention: the wastewater treatment process is simple, the comprehensive utilization rate of raw water exceeds 88%, greatly reduces the amount of sewage discharge, and achieves the purpose of improving the utilization rate of water resources and protecting the environment; reduces energy consumption, and reduces the consumption of boiler feed water in power plants. Production cost; save the area occupied by the device and save the construction cost.

Description

technical field [0001] The invention relates to the field of power plant boiler make-up water production, in particular to a wastewater treatment process and a device thereof in the power plant boiler make-up water production. Background technique [0002] In the existing power plant boiler feed water production system, most of the wastewater generated in the production process is directly discharged, which wastes a lot of water resources. In addition, it also causes serious salinization of the land through which the wastewater flows. Although certain wastewater treatment devices are installed for boiler feed water in some power plants, the wastewater recovery rate is low and energy consumption is high, resulting in high cost of wastewater recovery and treatment in the production of boiler feed water in power plants, which is not conducive to the improvement of economic benefits of enterprises. [0003] All in all, a technical problem that needs to be urgently solved by thos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04
Inventor 王富兴肖光王延峰方占珍许婷婷张素祯王艳春韩士亮张星星蒋东玉
Owner LIAOCHENG LUXI CHEM ENG DESIGN
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