Continuous gas stripping biological aerated filter sewage treatment device
A technology of biological aerated filter and biological filter, which is applied in the direction of sustainable biological treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., which can solve the shortage of microorganisms and restrict the technology of biological aerated filter Problems such as popularization and application, deterioration of effluent water quality, etc., achieve efficient and continuous decontamination function, ensure high efficiency and stability, and work continuously and smoothly
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Embodiment 1
[0036] Equipment construction and operation.
[0037] Such as figure 1 As shown, the biofilter 11 is supported by a bracket 6, the bottom of the biofilter 11 is a slag outlet 7, the inside of the pool body is covered with biological filler particles 3, and the upper end of the biofilter is provided with a washing device 13, which is provided with a partition The interior of the washing device 13 is divided into an inner cleaning area and a peripheral sewage area, and the top of the partition is connected to the foam removal cover 1; there is a discharge port 2 at the bottom of the cleaning area, and a sewage outlet 12 at the bottom of the sewage area. The material lifting pipe 4 extends from the bottom of the biofilter to the cleaning area inside the material washer 13 , and the material lifting pipe 4 is also connected with an air stripper 8 . A blanking baffle 5 is arranged on the outer side of the lower end of the material lifting pipe 4 .
[0038] A water inlet 10 is ar...
Embodiment 2
[0042] Calculated by weight percentage, with 70% activated carbon as the matrix, 16% iron oxide and 14% calcium lignosulfonate as the binder, add water and mix evenly, then extrude and cut into pellets, then dry naturally, and finally dry at 470 ° C and Under the condition of oxygen, heat carbonization and activation for 3 hours to make BACR special biological filler particles with a particle size of 4~6mm.
[0043] The device of Example 1 was used. The mass ratio relationship between the biological filler particles and the sewage in the device is 1:2.
[0044] Do a comparative experiment with the effect of the old biological filler and the old biological filter. The old biological filler in this experiment is the traditional activated carbon filler, and the biofilter also adopts the traditional old biological filter (see Zhu Lei, Pei Yujiao for details. Water treatment technology, "Experimental Research on the Treatment of Domestic Sewage by 2-Stage Bamboo Charcoal Aerated B...
Embodiment 3
[0046] The device as in Example 1 and the biological filler particles as in Example 2 are used, wherein the mass ratio between the biological filler particles and the sewage in the device is 1:2.
[0047] The application results of the present invention in the treatment of domestic sewage (raw water COD120-160mg / L, treatment capacity 200L / hr, and has been in stable operation for about 1 year) show that the continuous treatment of sewage with three-stage biological aerated filter (BACR), when In the first, second and third stages, the gas-water volume ratio is 5:1, 2:1, and 1:1 respectively, the temperature is 15.0-36.0°C, the hydraulic retention time is 3 hours, and the hydraulic load is 1.2m 3 m -2 h -1 Under certain conditions, the final removal rates of effluent COD, turbidity, ammonia nitrogen and TN are higher than 85.0%, 90.0%, 80.0% and 40.0% respectively, and the effluent COD, turbidity and ammonia nitrogen content all meet the requirements of GB / T18918-2002 Level 1 ...
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Abstract
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