Device and method for removing nitrate in drinking water
A nitrate and drinking water technology, applied in chemical instruments and methods, water pollutants, special compound water treatment, etc. The effect of source utilization, reducing the frequency of backwashing, and saving floor space
Pending Publication Date: 2020-11-27
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology
[0006] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a device and method for removing nitrate in drinking water. Problems of poor performance and high energy consumption
Method used
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Embodiment Construction
[0039] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0040] In one embodiment of the present invention, as figure 1 As shown, a device for removing nitrate in drinking water is provided, including a nitrate removal unit 1, an aeration decarburization unit 2 and an end purification unit 3 arranged sequentially from bottom to top, and the nitrate removal unit 1 includes a water inlet pipe 4 and cylinder one 5, the water inlet pipe 4 communicates with the bottom of cylinder one 5, the carbon source dosing pipe 6 is connected to the water inlet pipe 4, and the cylinder one 5 is provided with a porous support plate one 7 and a packing layer one 8 , the packing layer-8 is arranged on the upper part of the porous support plate-7;
[0041] The aeration and decarbonization unit 2 includes a cylinder body 9, in which a microporous aeration disc 10, a porous supporting plate 11 and a packing layer 12 ...
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The invention discloses a device and method for removing nitrate in drinking water. The device comprises a nitrate removal unit, an aeration carbon reduction unit and a tail end purification unit, wherein the nitrate removal unit comprises a water inlet pipe and a cylinder 1, the water inlet pipe is connected with a carbon source feeding pipe, and a porous support plate 1 and a filler layer 1 arearranged in the cylinder 1; the aeration carbon reduction unit comprises a cylinder II, a microporous aeration disc, a porous supporting plate II and a packing layer II are sequentially arranged in the cylinder II from bottom to top, the upper end of the cylinder II is open, and the lower end of the cylinder II is communicated with the upper end of the cylinder I through a flow guide pipe; the tail end purification unit comprises a cylinder III, a third porous bearing plate and a third filler layer are sequentially arranged in the cylinder III from bottom to top, the cylinder III is arranged on the outer side of the cylinder II and fixedly connected with the cylinder II, and a water outlet pipe is arranged on the lower portion of the cylinder III. The device effectively solves the problemthat an existing device is large in occupied area, complex in operation process, poor in nitrate removal effect and high in required energy consumption.
Description
technical field [0001] The invention belongs to the technical field of nitrate removal devices, and in particular relates to a nitrate removal device and a removal method in drinking water. Background technique [0002] With the development of the economy, the groundwater in many countries is polluted by nitrate to varying degrees, and the nitrate pollution in our country's groundwater is also becoming more and more serious. Nitrate is converted into nitrite in the human body, which can cause methemoglobinemia and generate carcinogens for infants; when the nitrate content is high, it can cause acute illness, and even hypoxia and death. Therefore, purification measures must be taken if the nitrate in drinking water exceeds the standard. [0003] At present, the main methods for removing nitrate in drinking water are physical, chemical and biological methods. The physical method mainly refers to the reverse osmosis method, which can remove most of the ions in the water, and ...
Claims
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IPC IPC(8): C02F3/02C02F101/16
CPCC02F3/02C02F2101/163C02F2305/06Y02W10/10
Inventor 吕育锋李斌纪雪梅孙毅
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES