CO2 treatment gasification gray water recycling device and method

A CO2 and grey water technology, applied in water softening and other directions, can solve the problems of difficult to meet environmental protection requirements, increase the cost of gasification grey water treatment, etc., and achieve the effect of simple structure and reasonable process design.

Pending Publication Date: 2021-05-28
陕西金禹科技发展有限公司
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  • Claims
  • Application Information

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Problems solved by technology

[0003] A large amount of gasified black water will be discharged during the use of the gasifier device. The solid content in the black water is more than 10,000mg / l. There is still a solid content of about 2000-3000mg / l in the water, and the black water treatment system of the gasification device is an important link to ensure the stable operation of the new gasifier, and the content of suspended solids in gray water directly affects the reuse of gray water The antiscaling effect of the system, for this reason, some manufacturers reduce the hardness of gasification gray water by adding agents such as sodium carbonate and calcium hydroxide. Undoubtedly increase the treatment cost of gasification gray water, it is difficult to meet the national environmental protection requirements

Method used

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  • CO2 treatment gasification gray water recycling device and method
  • CO2 treatment gasification gray water recycling device and method
  • CO2 treatment gasification gray water recycling device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] a CO 2 Treatment of gasification gray water reuse device, including gasification furnace 23, flash tank 24, buffer tank 25, dissolved gas reactor 26, CO 2 Storage tank 27, decalcification reaction tank 29 and automatic backwashing surface filter 32, the gasifier 23 is connected to the buffer tank 25 through the flash tank 24, and the buffer tank 25 reacts with the dissolved gas through a lift pump The gas-dissolving reactor 26 is connected with the device 26. The gas-dissolving reactor 26 is prepared by the application number CN201320285194. The gas-dissolving reactor 26 makes full use of carbon dioxide gas to reduce the hardness of the reclaimed water and reduce the emission of carbon dioxide; the device dissolves the gas under pressure to make the carbon dioxide Fully mixed with reclaimed water, no need to use mixing devices such as stirring, reducing power consumption and operating costs.

[0030] The CO 2 Storage tank 27 is connected with dissolved gas reactor 26 ...

Embodiment 2

[0045] like figure 1 Shown: a CO 2 A method for reusing gasification gray water, the method for reusing comprises the following steps:

[0046] Step 1: Introduce the gasified black water discharged from the gasification furnace through the pipeline to enter the flash tank to form gasified gray water. The formed gasified gray water enters the buffer tank for natural precipitation, and uses lime water to adjust the pH value of the wastewater to 8 ;The temperature of gasified black water is 100℃, the solid content is 14000mg / l, the turbidity is 700NTU, and the flow rate is 5m 3 / h.

[0047] Step 2: Send the gasified gray water supernatant in the buffer tank to the dissolved air reactor through the lifting pump. The temperature of the gasified gray water supernatant is 60°C, the solid content is 2750mg / l, and the turbidity is: 120NTU, CO 2 CO in storage tank 2 Enter the dissolved air reactor through the air-temperature gasifier and mix effectively and fully with the supernatan...

Embodiment 3

[0052] like figure 1 Shown: a CO 2 A method for reusing gasification gray water, the method for reusing comprises the following steps:

[0053] Step 1: Introduce the gasified black water discharged from the gasification furnace through the pipeline to enter the flash tank to form gasified gray water. The formed gasified gray water enters the buffer tank for natural precipitation, and uses lime water to adjust the pH value of the wastewater to 9. ;The temperature of gasified black water is 110℃, the solid content is 10000mg / l, the turbidity is 400NTU, and the flow rate is 5m 3 / h.

[0054] Step 2: Send the gasified gray water supernatant in the buffer tank to the dissolved air reactor through the lifting pump. The temperature of the gasified gray water supernatant is 75°C, the solid content is 2050mg / l, and the turbidity is: 80NTU, CO 2 CO in storage tank 2 Enter the dissolved air reactor through the air-temperature gasifier and mix effectively and fully with the supernatan...

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Abstract

The invention relates to a CO2 treatment gasification gray water recycling device and method. According to the device, system gasification black water is introduced through a pipeline to be naturally precipitated in a buffer tank, a gasification black water supernatant in the buffer tank is fed into a gas dissolving reactor through a lifting pump to be effectively and fully mixed with CO2 introduced into an air temperature gasifier from a CO2 storage tank; the gasification black water supernatant and CO2 are effectively and fully mixed and then flow into a calcium removal reaction tank, the CO2 reacts with the Ca<2+> in the wastewater to generate calcium carbonate precipitates, so that the Ca<2+> ions in the supernatant are removed; and the reacted liquid is fed into an automatic backwashing surface filter through a pipeline of an anti-interference water processor by a liquid inlet pump to be subjected to solid-liquid filtration so as to remove the precipitates in the gray water, the supernate after filtration returns to a production system, and the filter residues are discharged into a geosyncline. According to the invention, more than 90% of total hardness content in the gasified grey water can be removed, pure light calcium carbonate can be recovered, scaling of grey water system equipment and pipelines can be effectively slowed down, and stable operation of the grey water system can be ensured.

Description

technical field [0001] The invention relates to the technical field of gasification gray water reuse, in particular to a CO 2 Disclosed are a gasification gray water reuse device and a reuse method. [0002] technical background [0003] A large amount of gasified black water will be discharged during the use of the gasifier device. The solid content in the black water is more than 10,000mg / l. There is still a solid content of about 2000-3000mg / l in the water, and the black water treatment system of the gasification device is an important link to ensure the stable operation of the new gasifier, and the content of suspended solids in gray water directly affects the reuse of gray water The antiscaling effect of the system, for this reason, some manufacturers reduce the hardness of gasification gray water by adding agents such as sodium carbonate and calcium hydroxide. Undoubtedly, the treatment cost of gasification gray water has been increased, and it is difficult to meet th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F5/02
CPCC02F5/02
Inventor 王延军
Owner 陕西金禹科技发展有限公司
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