Earthworm Microbial Ecology Filter Bed Landfill Leachate Treatment Applied Research, And

The earthworm applies to protect the environment handle a technology catching people's attention gradually, but be mostly to be used to sell the city house refuse and organic waste of agriculture at reduced prices. The search into starting to organic waste water treatment is later. Research results does not study much, especially the rubbish percolates and filtrates liquid aspect.The earthworm applies to protect the environment handle a technology being able to reduce treatment cost not only, moreover may also obtain many sideline products, raised the availability of resources.Go into the main body of a book has been carried out here systematically on the basis, from earthworm organism's habits aspect such as the structure filtering bed, conditional preparation by screening of the best reaction and the analysis handling mechanism's. And, the liquid applying the rubbish infiltration that method to the pretreatment carries out actual treatment, have reduced the thickness putting up the water COD and the ammonia nitrogen greatly. By all above several aspect go into, have gained a few meaningful research results, summary result is summed up now as follows:Match the check test comparing by filtering material to diversity,can perceive that the filter material which material is composed of wood particle, husk and soil etc let earthworm have much better activity,and do not have flee the country phenomenon. The removal rate of COD and NH3-N is fairly good. COD and ammonia nitrogen removal rate reach 72.8%and 52.4%respectively.So the filter material which material is composed of wood particle, husk and soil etc to carry out next step liquid handles infiltration;Use earthworm organism's filter bed disposing of landfill leachate, under the condition of water addition be 300 mL, when the density of earthworm is 5 g/L, COD concentration of influent is 600mg/L,the dosing quantity of EM reagent is 50mL, The experiment has got fine treatment effect. The COD removal rate amounts to 85%-89.1%,ammonia nitrogen removal rate may amount to 66.3%-73.6%.The processing efficiency higher than the activated sludge process and the biofilter process;The results show that affect maximal being to removal rate of COD is COD concentration of influent,and secondly is the dosing quantity of EM reagent,at last is the density of earthworm;The removal of COD depends mainly on adsorption of the biofilm, soil, filter material and earthworms'manure. The removal of ammonia nitrogen depends mainly on the nitrification and denitrification of microorganism;The earthworm play direct role and indirect effect in the ecological filter bed. More important indirect effect starting from being their institute. What earthworm plays direct role mainly is consumption to organic and their assimilation and mineralization to nitrogen. The indirect effect is an earthworm and the microorganism coordination effect mainly and earthworms'activity domain degradate of organic; The process flow the ecological filter bed disposed of sewage is very simple, have facilitated sewage treatment technological process by a wide margin.lt is effective sewage treatment of one kind of low energy consumption, low cost economy system. Besides the by-product of the ecological filter bed-earthworm and earthworms'dung also have very high make use of value. Earthworm's economic returns and social benefits are high,is a kind of waits for development living things feed; The nutrition component of earthworm excrement sludge is rich,and is a kind of agricultural fertilizers, soil amendment and feed. It can changing waste into valuables and take new measures to raisemineral resource utilization efficiency.