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A kind of high ammonia nitrogen wastewater treatment device and method

A waste water treatment, high ammonia nitrogen technology, applied in the direction of biological water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of low denitrification efficiency, effluent ammonia nitrogen not up to standard, etc., and achieve high exposure The effect of volume

Active Publication Date: 2022-04-08
NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] Aiming at the problems of low denitrification efficiency and substandard effluent ammonia nitrogen in the biological denitrification treatment in the existing sewage treatment technology, the present invention provides a high ammonia nitrogen wastewater treatment device and method

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  • A kind of high ammonia nitrogen wastewater treatment device and method

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Embodiment 1

[0083] In this embodiment, a high ammonia nitrogen wastewater treatment device is used for wastewater treatment. The high ammonia nitrogen wastewater treatment device comprises a biological reaction zone 100, a separation zone 200 and a sludge activation zone 300, wherein the volume ratio of the first aerobic zone 120 and the second aerobic zone 130 in the biological reaction zone 100 is 1:1.5, The ratio of the lower cross section to the upper cross section at the top of the central cylinder is 1:1.5.

[0084] A certain food wastewater was pretreated to obtain sewage A. The water quality COD was 100-200mg / L, ammonia nitrogen was 50-60mg / L, total nitrogen was 60-80mg / L, and the biodegradability of the wastewater was good. B / C>0.4, The specific processing steps are as follows:

[0085] S10. Sewage A enters the central cylinder 110 of the biological reaction zone 100 upwards through the water distributor 112, and the aeration device 111 is turned on to control the oxygen content...

Embodiment 2

[0093] The basic content of this embodiment is the same as that of Embodiment 1, except that the volume ratio of the first aerobic zone 120 to the second aerobic zone 130 in the biological reaction zone 100 is 1.3:1.5, and the lower horizontal line at the top of the central cylinder The ratio of section to upper cross section is 1:1.3.

[0094] Sewage A is obtained after pretreatment of industrial wastewater. The COD of the water is 800-1000mg / L, the ammonia nitrogen is 100-120mg / L, the total nitrogen is 100-120mg / L, and the biodegradability of the wastewater is poor B / C<0.3. The processing steps are as follows:

[0095] S10. Sewage A enters the central cylinder 110 of the biological reaction zone 100 upwards through the water distributor 112, and the aeration device 111 is turned on to control the oxygen content of the water body to 2-3mg / L. The sewage A is aerobic in the first aerobic zone 120 Remove COD to obtain sewage B that removes most of COD;

[0096] S20, the sewage...

Embodiment 3

[0103] The basic content of this embodiment is the same as that of Embodiment 1, except that the volume ratio of the first aerobic zone 120 to the second aerobic zone 130 in the biological reaction zone 100 is 1.5:1.1, and the lower horizontal line at the top of the central cylinder The ratio of the section to the upper cross section is 1:1.1.

[0104] A certain pesticide wastewater was pretreated to obtain sewage A. The water quality COD was 800-1000mg / L, ammonia nitrogen was 50-60mg / L, total nitrogen was 80-100mg / L, and the biodegradability of the wastewater was poor 0.3<B / C <0.4, the specific processing steps are as follows:

[0105] S10. Sewage A enters the central cylinder 110 of the biological reaction zone 100 upwards through the water distributor 112, and the aeration device 111 is turned on to control the oxygen content of the water body to 2-3mg / L. The sewage A is aerobic in the first aerobic zone 120 Remove COD to obtain sewage B that removes most of COD;

[0106]...

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Abstract

The invention discloses a high ammonia nitrogen waste water treatment device and method, belonging to the field of sewage treatment. The high-ammonia-nitrogen wastewater treatment device of the present invention divides the aerobic zone into the first aerobic zone with decarburizing bacteria as the dominant flora and the second aerobic zone with nitrifying bacteria as the dominant flora through special structural design. COD degradation is carried out in the first aerobic zone, and nitrification and denitrification are carried out in the second aerobic zone, thereby reducing the inhibitory effect of decarburizing bacteria on nitrifying bacteria, improving the effect of nitrification and denitrification, ensuring that the effluent ammonia nitrogen reaches the standard, and ensuring the quality of the effluent. Using the high-ammonia-nitrogen wastewater treatment device of the present invention for wastewater treatment has the advantages of small footprint, compact structure, wide application range, strong impact resistance, stable effluent quality, and the like.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and more specifically relates to a high ammonia nitrogen wastewater treatment device and method. Background technique [0002] Excessive discharge of ammonia nitrogen into the water body will lead to eutrophication of the water body, reducing the ornamental value of the water body, and the nitrate and nitrite produced by oxidation will also affect the health of aquatic organisms and even human beings. Therefore, wastewater denitrification treatment has received widespread attention. [0003] At present, the main denitrification methods include air stripping, chemical precipitation, break point chlorination, ion exchange and biological nitrification and denitrification. The stripping method is one of the most commonly used methods for treating ammonia nitrogen wastewater. The stripping method removes the ionic ammonium (NH 4+ ), which is converted into molecular ammonia by adjusting the pH value,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30
CPCC02F3/302
Inventor 姜笔存贺雨舟屈晋云谈政焱刘浩亮
Owner NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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