Summary of the invention
The efficient cryogenic ammonia nitrogen sewage processing method that the purpose of this invention is to provide a kind of good realization low-temperature denitrification effect.
The objective of the invention is to be achieved through the following technical solutions:
Efficient cryogenic ammonia nitrogen sewage processing method of the present invention comprises step:
At first, the employing macromolecular material is carrier, and the nitrobacteria of section's embedding within it microorganism is to form nitrobacteria embedding carrier;
Then, in reaction vessel, add described nitrobacteria embedding carrier, pass into and contain ammonia-nitrogen sewage, described nitrobacteria embedding carrier is activated;
After carrier activated successfully, seed sludge passed into and wants to dispose of sewage, and carried out aeration biochemical and processed.
As seen from the above technical solution provided by the invention, the efficient cryogenic ammonia nitrogen sewage processing method that the embodiment of the invention provides, because the embedding nitrifying bacteria vector has good physical and mechanical property and chemical stability, the antibiont degraded, wear-resistant, the embedding nitrifying bacteria vector contains and is beneficial in a large number nitrobacteria growth, the component substances of breeding and maintenance activity and mass transfer diffusion, has higher low temperature ammonia nitrogen processing efficiency, technical process is short, device is simple, treatment effect is good, to have treatment process now and special carrier combines, well realize the low-temperature denitrification effect.
Embodiment
The below will be described in further detail the embodiment of the invention.
Efficient cryogenic ammonia nitrogen sewage processing method of the present invention, its better embodiment comprises step:
At first, the employing macromolecular material is carrier, and the nitrobacteria of section's embedding within it microorganism is to form nitrobacteria embedding carrier;
Then, in reaction vessel, add described nitrobacteria embedding carrier, pass into and contain ammonia-nitrogen sewage, described nitrobacteria embedding carrier is activated;
After carrier activated successfully, seed sludge passed into and wants to dispose of sewage, and carried out aeration biochemical and processed, and water outlet can be up to standard.
Described nitrobacteria microorganism is from the bacterium liquid or the nitrifying sludge that contain nitrobacteria.
In the described activation step, stable the reaching more than 75% of the ammonia nitrogen removal frank of the nitrobacteria embedding carrier after to be activated namely activates successfully.
For newly-built Sewage Plant, the activation of embedding carrier is carried out or proceed step by step simultaneously with sludge seeding; Directly will activate in the embedding carrier input aeration tank for the reorganization and expansion Sewage Plant.Activation needs to carry out under the suitable the bread worm condition of nitrobacteria.
Efficient cryogenic ammonia nitrogen sewage processing method of the present invention both had been applicable to the processing of city domestic sewage, various industrial sewages, also was applicable to the improvement of rivers and lakes environmental wastewater, also can be used for rural sewage treatment, had higher low temperature ammonia nitrogen processing efficiency.Technical process is short, device is simple, treatment effect is good, will have treatment process now and special carrier combines, and well realizes the low-temperature denitrification effect.
The present invention draws and keeps the technical characterstic of MBBR technique, overcomes the technical problem in the MBBR technique, and the ammonia nitrogen processing efficiency is high, and effluent quality is good, and economic performance is good.
Embedding nitrifying bacteria vector among the present invention has good physical and mechanical property and chemical stability, and the antibiont degraded is wear-resistant.Embedding nitrifying bacteria vector of the present invention contains the component substances that is beneficial in a large number nitrobacteria growth, breeding and maintenance activity and mass transfer diffusion, thereby has high ammonia nitrogen removal frank.Embedding nitrifying bacteria vector of the present invention, the fixation of microbe ability is strong, and the biological load amount is large, and section can form biological bacterium colony group within it, and the nitrobacteria amount is larger than general filler or carrier; Embedded immobilization is processed the loss that reduces nitrobacteria simultaneously, thereby improves the effect that it processes ammonia nitrogen; The nitrobacteria of being fixed still can keep good biological activity at low temperatures.
Embodiment 1:
(1) nitrobacteria embedding carrier preparation: macromolecular material and other materials and solidifyingization of component mixing that become to grade that contain a large amount of nitrobacterias are obtained embedding nitrifying bacteria vector material.During use, be cut into fritter, namely obtain nitrobacteria embedding carrier.
(2) nitrobacteria embedding carrier activation: in indoor reaction vessel, add above-mentioned embedding nitrifying bacteria vector, pass into the ammonia nitrogen water sample of artificial preparation continuously or intermittently or the first heavy sewage of Sewage Plant carries out the aeration activation treatment, treat that stable the reaching more than 75% of ammonia nitrogen removal frank of embedding carrier namely activates successfully.
(3) nitrobacteria embedding carrier sewage disposal: will activate good carrier and directly drop in the aeration tank of sewage work, and carry out aeration biochemical and process.
Embodiment 2:
(1) nitrobacteria embedding carrier preparation: macromolecular material and other materials and solidifyingization of component mixing that become to grade that contain a large amount of nitrobacterias are obtained embedding nitrifying bacteria vector material.During use, be cut into fritter, namely obtain nitrobacteria embedding carrier.
(2) nitrobacteria embedding carrier activation: add above-mentioned embedding nitrifying bacteria vector in the aeration tank, the sewage that passes into continuously Sewage Plant carries out the aeration activation treatment, treats that stable the reaching more than 75% of ammonia nitrogen removal frank of embedding carrier namely activates successfully.
(3) nitre bacterium embedding carrier sewage disposal: seed sludge after the embedding carrier activates successfully, carry out aeration biochemical and process.
Embodiment 3:
(1) nitrobacteria embedding carrier preparation: macromolecular material and other materials and solidifyingization of component mixing that become to grade that contain a large amount of nitrobacterias are obtained embedding nitrifying bacteria vector material.During use, be cut into fritter, namely obtain nitrobacteria embedding carrier.
(2) activation of nitrobacteria embedding carrier and sewage disposal: in the aeration tank, add above-mentioned embedding nitrifying bacteria vector, and seed sludge, the sewage that passes into continuously Sewage Plant carries out aeration activation treatment and biochemical treatment, regularly measure the ammonia nitrogen removal frank of embedding carrier, until stable reaching more than 75% namely activates successfully.
After the aeration biochemical of for some time is processed, stable effluent quality, the effluent quality after the processing is as follows: water temperature＜12 ℃; CODCr＜50mg/L, clearance is more than 90%; BOD5＜10mg/L, clearance is more than 95%; SS＜10mg/L, clearance is more than 95%; NH4+N＜5mg/L, clearance is more than 95%.
The below is listed below application examples to further specify the present invention according to example:
Application examples:
Adopt the present invention to process city domestic sewage, 10～14 ℃ of temperature, the average 55mg/L of influent ammonia nitrogen, water outlet ammonia nitrogen＜1.5mg/L, clearance reaches more than 97.3%.
The present invention compares with the sewage disposal technology of generally using at present both at home and abroad has following advantage:
Processing speed is fast, and treatment effect is good;
The present invention adopts the embedded immobilization technology that nitrobacteria is fixed in the carrier, can significantly improve the charge capacity of nitrobacteria, improves biodegradation rate and processing efficiency, and effluent quality is good.This technology can be used for processing city domestic sewage, various industrial sewage, and the dosage that all can adjust as required carrier reaches national grade one discharge standard;
Nitrobacteria is active high, and breeding is fast, strong adaptability, and (＜10 ℃) still have higher biological activity and processing efficiency at low temperatures;
The special construction of this embedding carrier still can be bred by raised growth nitrobacteria when temperature is low, have stronger thermal adaptability and higher biological activity, thereby make it have high subzero treatment efficient;
Take up an area little, less investment, running cost is low;
The nitrobacteria embedding is fixed in the carrier, has reduced the loss of nitrobacteria biomass, prolongs the residence time of nitrobacteria in the pond, has improved the ammonia nitrogen processing efficiency, can reduce hydraulic detention time, reduces the pond and holds and take up an area, thereby reduce investment; On the other hand, the embedding carrier presents fluidized state under the aeration effect, so that carrier has improved the aeration dissolved oxygen efficiency to the cutting action of bubble, reduces running cost;
Suitable old sewage work technological transformation and dilatation.
The present invention is applied to existing sewage work and carries out dilatation and technological transformation, and especially the sewage work of land used deficiency has advantage, need not moving capital construction facility, can realize.Operational management is convenient, and equipment can stop and can turn, and does not affect treatment effect, but how long all equipment stop plug and play, and treatment effect recovers at once.
The above; only for the better embodiment of the present invention, but protection scope of the present invention is not limited to this, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claims.