The invention provides a rice field water purifying agent with
sludge as a matrix and relates to the technical field of
sewage treatment. The water purifying agent is prepared from 500-650 parts of
sludge, 50-150 parts of quick
lime, 50-150 parts of
montmorillonite powder, 20-50 parts of
crystal powder and 20-35 parts of
sodium hydrogen phosphite. The water purifying agent has the advantages that the characteristics of fast adhesion
settling of the
sludge and the sludge containing rich
plant auxin are adopted and combined with the quick
lime for sterilization and deodorization,
sodium hydrogen phosphite is used for activating
lime ions, the sterilizing effect of the lime can be better,
pesticide residues in the sludge can be removed, by the cooperation with the
montmorillonite powder and the
crystal powder,
total suspended solids in water in a rice field can be eliminated thoroughly, a
fertilizer mixture mixed and dissolved in the water can be wrapped to deposit on the water bottom, when it rains, the
fertilizer mixture can not run off along with rainwater, nutrients of the sludge can support growth of rice seedlings, and the quick lime in the composition has an inhibition effect of rice blast. The water purifying agent is used in the dry field, can preserve
moisture,
resist disasters and improve soil, and plays important roles in sludge return to the field, sludge water purification and country
ecology scene protection and restoration.