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Thermal power plant wastewater treatment system and wastewater treatment method

A waste water treatment system and technology for waste water treatment, applied in water/sewage treatment, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve difficult processing and assembly, clogging of two-fluid nozzles, complex mechanical structure, etc. problem, to achieve the effect of efficient recycling

Pending Publication Date: 2020-08-21
HEPU TECH DEV BEIJING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its internal mechanical structure is too complicated, and the dual-fluid nozzles installed in the internal nozzle seat are prone to clogging, and the machining and assembly of the whole device are extremely difficult.

Method used

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  • Thermal power plant wastewater treatment system and wastewater treatment method
  • Thermal power plant wastewater treatment system and wastewater treatment method
  • Thermal power plant wastewater treatment system and wastewater treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] A thermal power plant wastewater treatment system, such as figure 1 As shown, it includes a coal-fired boiler 11 in a thermal power plant, flue gas denitrification equipment 12, an air preheater 13, an electrostatic precipitator 5, a desulfurization tower 7, and a waste water collection header 2. The coal-fired boiler 11 in a thermal power plant, flue gas denitrification equipment 12 and the air preheater 13 are connected in sequence, and the coal-fired boiler 11 of the thermal power plant burns coal to produce flue gas. The power plant wastewater treatment system also includes an atomizing substance introduction device 1, a wastewater concentration and weight reduction device 3, and a waste water atomization and evaporation device 4. The waste water collection header 2 is connected to the waste water concentration and weight reduction device 3, so that the waste water collection header 2 The waste water from the thermal power plant is passed into the waste water concen...

Embodiment 2

[0058] Such as image 3 As shown, the wastewater atomization nozzle unit 411 includes a housing, and the inside of the housing is hollow to form an atomization mixing chamber 411c, and the atomization mixing chamber 411c is provided with a concentrated wastewater inlet 411a, a high-temperature flue gas inlet 411b and the first atomizing chemical inlet 411e, the outlet end of the atomization mixing chamber 411c is gradually narrowed and is provided with a nozzle 411f, the other end of the nozzle 411f is connected to the mist outlet 411d, and the mist outlet 411d It gradually widens outward from the nozzle 411f. The wastewater atomizing nozzle unit 411 adopts any one of pressure atomizing nozzles, rotary atomizing nozzles, pneumatic atomizing nozzles, ultrasonic or whistle atomizing nozzles.

[0059] The concentrated wastewater inlet 411a is located on the central axis of the atomization mixing chamber 411c and is connected to the concentrated wastewater inlet pipe 42. The conc...

Embodiment 3

[0066] Such as Figure 4As shown, the waste water atomizing nozzle unit 411 is composed of a waste water flow pipe 411h and a first atomizing substance inlet pipe 411i. The waste water flow pipe 411h is cylindrical, and one end is provided with a concentrated waste water inlet 411a. An atomization chemical substance inlet pipe 411i is provided with a first atomization chemical substance inlet 411j, and the first atomization chemical substance inlet pipe 411i is sleeved on the outside of the waste water flow pipe 411h, and the waste water flow pipe 411h is connected to the The outlet ends of the first atomizing substance inlet pipe 411i jointly form a mist outlet 411d.

[0067] The concentrated wastewater inlet 411a is located on the central axis of the wastewater atomizing nozzle unit 411 and connected to the concentrated wastewater inlet pipe 42. The concentrated wastewater enters the wastewater atomizing nozzle unit 411 through the concentrated wastewater inlet 411a for atom...

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Abstract

The invention discloses a thermal power plant wastewater treatment system. The system comprises a thermal power plant coal-fired boiler (11), flue gas denitration equipment (12), an air preheater (13), an electric dust remover (5), a desulfurization tower (7) and a wastewater collecting header (2). The system further comprises an atomizing working medium introducing device (1), a wastewater concentrating and reducing device (3) and a wastewater atomizing and evaporating device (4). The wastewater collecting header (2) is connected with the wastewater concentrating and reducing device (3), so that thermal power plant wastewater in the wastewater collecting header (2) is introduced into the wastewater concentrating and reducing device (3). The wastewater concentrating and reducing device (3)and the atomizing working medium introducing device (1) are respectively connected with the wastewater atomizing and evaporating device (4), so that smoke, steam or compressed air atomizing working medium introduced by the atomizing working medium introducing device (1) and concentrated and reduced waste water output from the waste water concentrating and reducing device (3) enter the waste wateratomizing and evaporating device (4). The waste water atomizing and evaporating device (4) is connected with the electric dust remover (5).

Description

technical field [0001] The invention belongs to the field of thermal power plant wastewater treatment, and in particular relates to a thermal power plant wastewater treatment system and a wastewater treatment method. Background technique [0002] Due to my country's abundant coal resources, reliable operation and mature technology of coal-fired power generation, coal-fired power generation has long been the main source of energy supply in my country. However, various wastewaters are produced during the operation of coal-fired power plants, mainly including desulfurization wastewater, circulating cooling system sewage, acid-base wastewater, and domestic sewage. Among them, desulfurization wastewater has become one of the most difficult wastewater for coal-fired power plants due to its complex composition and various types of pollutants. At present, desulfurization wastewater is mainly treated by chemical precipitation method, but this process also has some shortcomings such ...

Claims

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Application Information

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IPC IPC(8): C02F1/12
CPCC02F1/12
Inventor 杨豫森陈辉崔华
Owner HEPU TECH DEV BEIJING CO LTD