Sewage treatment river sediment remediation method

Abstract

The invention discloses a sewage treatment river sediment remediation method. A sewage treatment river sediment remediation material mainly comprises a base material prepared from substances such as coal powder and / or oat straws and / or cedarwood and / or basswood and the like, and a compound bacterial colony adhered to a base material carrier, wherein the compound bacterial colony mainly comprises saccharomycetes and / or photosynthetic bacteria and / or linear bacteria and / or aspergillus; a flocculating agent is a polyacrylamide solution; the concentration of polyacrylamide is controlled to be 1-2mg / l; the volume ratio of polyacrylamide to the carrier is (0.8 to 1)-(1 to 1).

Description

technical field [0001] The invention relates to a method for repairing sewage treatment river bottom mud, which belongs to the field of sewage treatment. Background technique [0002] In the water purification process of large water bodies such as rivers, lakes, and reservoirs, the treatment of polluted sediment is a relatively difficult problem. At present, the commonly used method is dredging, that is, the method of intercepting and dredging bottom mud. Although this method can remove bottom mud pollutants, it requires a large amount of work, requires a lot of personnel, and is expensive. The dug out bottom mud will also form secondary Moreover, when this method is used for water quality control, the water body can only be kept clean for a certain period of time. With the entry of pollutants, new pollution will settle down and form sediment. In the traditional sewage treatment process, sand and gravel are used as filter beds, and some large-particle organic suspended subs...

AI Technical Summary

Problems solved by technology

At present, the commonly used method is dredging, that is, the method of intercepting and dredging bottom mud. Although this method can remove bottom mud pollutants, it requires a large amount of work, requires a lot of personnel, and is expensive. The dug out bottom mud will also form secondary Moreover, when this method is used for water quality control, the water body can only be kept clean for a certain period of time. With the entry of pollutants, new pollution will settle down and form sediment

In the traditional sewage treatment process, sand and gravel are used as filter beds, and some large-particle organic suspended substances are intercepted by using the gaps between sand and gravel particles. However, it is difficult to remove organic suspended substances with smaller particles. Those water-soluble organic The material cannot be removed at all; and the sand filter bed must be backwashed after running for a certain period of time, and the intercepted large particle suspended matter will cause secondary pollution