A cc-hbdp treatment process for livestock and poultry breeding wastewater

A technology for livestock and poultry breeding wastewater and treatment process, which is applied in animal husbandry wastewater treatment, multi-stage water treatment, water/sewage treatment, etc. It can solve the problem of influent COD not being too high, achieve less sludge production, and reduce organic load , the effect of low energy consumption

Active Publication Date: 2022-08-09
FUJIAN HAIXIA ENVIRONMENTAL PROTECTION GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the influent COD of these processes should not be too high, otherwise it will inhibit the activity of autotrophic microorganisms such as anammox bacteria.

Method used

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  • A cc-hbdp treatment process for livestock and poultry breeding wastewater
  • A cc-hbdp treatment process for livestock and poultry breeding wastewater
  • A cc-hbdp treatment process for livestock and poultry breeding wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1: In step (1), the coagulant in the coagulation tank is polyaluminum chloride, the dosage is 50 mg / L, the stirring speed is 50 r / min, and the residence time is 5 min; by controlling the dosage of the coagulant , so that the C / N ratio of the sewage entering the mixed denitrification tank is 1:1.

[0028] In this embodiment, in step (2), the hydraulic retention time in the clarifier is 1h, and the aperture of the first solid-liquid separation device is 25 μm; the captured carbon source is discharged through the vent valve 8 below the clarifier 5 for collection.

[0029] In this embodiment, in step (3), the dissolved oxygen in the mixed denitrification tank is controlled at 0.2 mg / L and the pH is controlled at 7.8 by controlling the aeration amount of the aeration device 10; the braided belt is vertically suspended in the mixed denitrification tank The density of the braided packing 11 is 50 pieces per square meter.

Embodiment 2

[0030] Example 2: In step (1), the coagulant in the coagulation tank is polyaluminum chloride, the dosage is 400 mg / L, the stirring speed is 300 r / min, and the residence time is 20 min; by controlling the dosage of the coagulant , so that the C / N ratio of the sewage entering the mixed denitrification tank is 3:1.

[0031] In this embodiment, in step (2), the hydraulic retention time in the clarifier is 3 h, and the aperture of the first solid-liquid separation device is 150 μm; the captured carbon source is discharged through the vent valve 8 below the clarifier 5 for collection.

[0032] In this embodiment, in step (3), the dissolved oxygen in the mixed denitrification tank is controlled at 0.5 mg / L and the pH is controlled at 8.2 by controlling the aeration amount of the aeration device 10; the braided belt is vertically suspended in the mixed denitrification tank The density of the braided packing 11 is 100 pieces per square meter.

Embodiment 3

[0033] Example 3: In step (1), the coagulant in the coagulation tank is polyaluminum chloride, the dosage is 200 mg / L, the stirring speed is 300 r / min, and the residence time is 5 min; The C / N ratio of the sewage entering the mixed denitrification tank is 2:1.

[0034] In this example, in step (2), the hydraulic retention time in the clarifier is 3 h, and the aperture of the first solid-liquid separation device is 70 μm; the captured carbon source is discharged through the vent valve 8 below the clarifier 5 for collection.

[0035]In this embodiment, in step (3), the dissolved oxygen in the mixed denitrification tank is controlled at 0.2 mg / L and the pH is controlled at 8.0 by controlling the aeration amount of the aeration device 10; the braided belt is vertically suspended in the mixed denitrification tank The density of the braided packing 11 is 70 pieces per square meter.

[0036] The influent COD concentration of livestock and poultry breeding wastewater in a rural area ...

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Abstract

The invention relates to a CC-HBDP treatment process for livestock and poultry breeding wastewater, comprising the following steps: (1) livestock and poultry breeding wastewater enters a coagulation tank, adds a coagulant and stirs to form flocs, and then the mixed liquid enters a clarifier; ( 2) A large number of flocs are gravity-precipitated in the clarifier, and the large particles of organic matter are caught and swept by the net to form a particle floating bed. The flocs are intercepted, and the separated low-carbon nitrogen ratio supernatant enters the mixed denitrification tank; (3) In the mixed denitrification tank, the organic nitrogen is ammoniated, and part of the ammonia nitrogen is converted into nitrite nitrogen, nitrous nitrogen and The remaining ammonia nitrogen is converted into nitrogen and nitrate, and the nitrate and part of the organic matter are converted into nitrogen, so as to finally achieve synergistic and efficient denitrification, and the treated water is discharged through the second solid-liquid separation equipment. The synergistic effect of autotrophic bacteria denitrification and heterotrophic bacteria denitrification has the advantages of high denitrification efficiency, low energy consumption and low sludge yield.

Description

technical field [0001] The invention relates to a CC-HBDP treatment process for livestock and poultry breeding wastewater, belonging to the field of sewage treatment and resource utilization. Background technique [0002] With the popularization of industrial wastewater treatment facilities and the improvement of technical level in my country, the total amount of industrial wastewater pollution has been effectively controlled. On the contrary, the proportion of agricultural non-point source pollution in the total pollutant discharge has continued to rise. One of the main sources of pollution is livestock. Various types of wastewater discharged from poultry farming. Livestock and poultry breeding wastewater has the characteristics of high organic matter and high ammonia nitrogen. Its unreasonable discharge not only affects the cleanliness and sensory comfort of the environment, but also causes pollution of rivers, lakes and groundwater, leading to the deterioration of the ecol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F103/20
CPCC02F9/00C02F1/5281C02F1/5245C02F2001/007C02F1/001C02F3/307C02F3/34C02F2203/006C02F2303/06C02F2103/20C02F2303/14C02F2301/08Y02W10/10
Inventor 张莉敏陈美香王志伟林哲冠陈凤林志龙陈超杨连潭林航于成志
Owner FUJIAN HAIXIA ENVIRONMENTAL PROTECTION GRP
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