1. Blagdon supply Bio-Filter Medium high-grade semi porous light clay granules with a large surface area.

2. Applying the model to the experimental up-flow anaerobic biofilter.

3. A comprehensive multi-components and multi-species dynamic model of biofilter was established in this paper.

4. Refinery effluent was treated by hydrolysis acidification-aerobic biofilter process with blast furnace slag as packing.

5. Namalycastis Abiuma was found in the aerobic biofilter(CN filter)in Xiamen Second Wastewater Treatment Plant. Namalycastis Abiuma may cause clogging of the filter nozzles.

6. Aerated biofilter is a new water treatment process with many advantages that both bio-film process and activated sludge process have.

7. The results reveal that the biofilter media is protected from basification by removal of most ammonia and nicotine in the modular scrubber.

8. In this experiment, the purification efficiency of trickling biofilter dropped with the increase of gas flux , liquid flux and xylene concentration of the inlet obviously.

9. The anaerobic biofilter(AF) and aerobic biological contact oxidation(BCO) process have been used for treating synthetic detergent(LAS) wastewater.

10. The effects of temperature change a biofilter for treating ethylbenzene.

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11. The GAC-sand biofilter could remove benzoic acid esters, aliphatic acid esters and phenols in the influent of the biofilter effectively.

12. From the experimental results, it can be inferred that the process of purifying the waste gas containing toluene in low concentration by using the biofilter is limited by mass transfer.

13. The results indicate that the predominant organism groups were a complicated ecosystem including bacteria, protozoa and algae in the biotrickling filter while it was only fungi in the biofilter.

14. Study was made on the efficiency and mechanism of shortcut nitrification-denitrification in aerated biofilter.

15. An experimental investigation on purification of ethylbenzene waste gas a biofilter packed with ceramic pellets.

16. The pretreatment of polluted Yellow River source water was carried out using moving-bed biofilm reactor(MBBR) and ceramsite biofilter(BF).

17. The idea of this reactor's design was combining the ABR with the biofilter and the activated carbon craft.

18. The nitrogen source's effects on the purification performance of air phase trickling biofilter are significant.

19. The reactors used by the invention comprise an anaerobic bacteria filter, an aerobic biological fluidized bed, an anoxic biofilter and a settling pond.

20. At present frequently used advanced treatment technologies on the depth of processing on the tail water were filter, biofilter, wetland, membrane separation and so on.

21. Aiming at severe entironment pollution question caused by intensive feeding, the use of biofilter is presented.

22. The results of parallel plat plates model and the multiphase mixture model both show that: (1) the purification efficiency of trickling biofilter reduces as the gas or liquid flux increasing.