The invention relates to a composite biological
enzyme preparation for the deweighting treatment of domestic
sludge, and a production and application method thereof. The invention is characterized in that 100-500 kilograms of composite biological
enzyme for the deweighting treatment of domestic
sludge are used for 100 thousand tons of municipal domestic
sewage, wherein the composite biological
enzyme for the deweighting treatment of domestic
sludge comprises 25-30 parts of
protease, 20-25 parts of one or more of
laccase,
polyphenol oxidase and
manganese peroxidase, 17-21 parts of one or more of
xylanase, pentosanase and mannase, 20-25 parts of one or more of
cellulase,
pectinase and hemicellulase, 10-15 parts of
lipase and 12-16 parts of
amylase. Compared with the prior art, the invention removes
hydrogen sulfide gas and undesirable
odor thereof, simultaneously eliminates the inhibiting effect of H2S on the
nitrification process, effectively reduces
nitrate and
ammonia, decomposes proteins,
starch, fat, food oil,
xylan,
cellulose and other organic substances, converts suspended substances, accumulated waste and soluble organic substances in the sludge into
carbon dioxide,
nitrogen gas,
oxygen gas, water and sulphate, reduces the TSS (
Total Suspended Solids), COD (
Chemical Oxygen Demand) and BOD (
Biochemical Oxygen Demand), greatly decreases the yield of the sludge, and has the advantages of no poison, no corrosiveness and no secondary
pollution production.