CO2 treatment gasification gray water recycling device and method

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...

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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

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