The experiments indicated that the decolouration rate and COD disposal ratio of the wastewater were 27.7 % and 34.7 % respectively after 0.3MC sieve membrane filtration and 4000 r/min centrifugally separation for 20 min and then UF filtration(intercepted molecular weight as 10,000),and the membrane was easy to clean.
The research use microwave assistant technology to enhance extraction ratio of pectin from lemon peel. We study the best parameter of microwave disposal and get the best result:microwave output power 600 W,the ratio of material to solvent 1:3,disposal time 58 s,disposal degree 3 times. Compared with control experiment,the average increase ratio of pectin yield is 118.31 %.
In the second part, where we explore connections with Maxwell's equations, the main novelty is the treatment of the corresponding electro-magnetic boundary value problem by recasting it as a 'half' Dirichlet problem for a suitable Dirac operator.
While our proofs, constructions and numerical examples are given for eigenvalue problems for the Laplacian operator in the plane, other elliptic operators can be treated similarly.
A Delftia tsuruhatensis strain capable of consuming aniline as the sole source of carbon, nitrogen, and energy at concentrations of up to 3200 mg/l was isolated from activated sludge of the sewage disposal plants of OAO Volzhskii Orgsintez.
Part of the review is devoted to analyzing methods used for studying the population dynamics of bacterial communities involved in xenobiotic degradation in natural biotopes or industrial waste disposal plants.
Enrichment cultures of microorganisms producing gases (hydrogen, methane, carbon dioxide, and hydrogen sulfide) and capable of participation in the precipitation of metal sulfides were obtained from the waters of the disposal site.