The invention relates to a low-carbon-
nitrogen-ratio
wastewater treatment method and a reactor,
denitrification nitrogen removal treatment is performed by using a biological method, and the method specifically comprises the following steps: 1, an organic
carbon source can be effectively and slowly released after
agricultural waste corncob is pretreated, and two fillers are added into the reactor, so that the organic
carbon source can be effectively and slowly released; wherein the filler 1 is a mixture of pretreated corncobs and
zeolite, and the filler 2 is a mixture of pretreated corncobs,
zeolite and
cellulose decomposition bacteria. Two fillers are added into the reactor, so that the biological
denitrification efficiency can be effectively improved, and the COD concentration in the discharged
water body reaches the standard. Through cooperation of two factors including
hydraulic retention time control and arrangement of two fillers in the reactor, ideal
denitrification efficiency is achieved, meanwhile, the COD concentration in discharged water is well controlled
not to exceed the standard, the COD concentration of
effluent is relatively stable, and the COD concentration of the
effluent can be further well controlled by controlling the use amount of the reacted fillers in the later period.