A kind of manufacturing method of feedwater sludge composite filler and its filler bed

Abstract

The invention discloses a manufacture method of water supply sludge composite filler and a packed bed thereof. The manufacture method comprises following steps: taking a quantity of sludge, drying, then smashing and sieving; mixing the raw material sludge with anthracite at a weight ratio of 1:(0.2-0.5); adding a starch paste into the mixture, and mixing uniformly, wherein the quantity of the starch paste is 2-5wt% of the mixture; prilling and drying; roasting the dried particles at 300-600 DEG C; steeping the roasted particles in a 5-10% aluminum polychlorid solution; uniformly mixing the steeped particles with sponge iron at a weight ratio of 1:(0.2-0.5). The granular water supply sludge composite filler is the material capable of dephosphorizing and fixing nitrogen efficiently.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a method for manufacturing a feedwater sludge composite filler and a filler bed thereof. Background technique [0002] Scattered sewage in rural areas is difficult to centrally collect due to its small volume and wide area. A large amount of sewage is discharged to the environment without effective treatment. In areas with dense river networks and water source protection areas in the south, it is easy to cause eutrophication of water bodies and seriously threaten drinking water sources. [0003] Existing treatment technologies basically adopt ecological methods such as constructed wetlands for treatment. However, these facilities are limited to large areas, low treatment levels, and large investment, making it difficult to popularize and apply them in a large area, making it difficult to effectively treat scattered non-point source sewage. [0004] Using fee...

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Problems solved by technology

[0002] Scattered sewage in rural areas is difficult to centrally collect due to its small volume and wide area. A large amount of sewage is discharged to the environment without effective treatment. In areas with dense river networks and water source protection areas in the south, it is easy to cause eutrophication of water bodies and seriously threaten drinking water sources.

[0003] Existing treatment technologies basically use ecological methods such as artificial wetlands for treatment, but these facilities are limited to large areas, low treatment levels, large investment and difficult to promote and apply in large areas, making it difficult to effectively treat scattered non-point source sewage

[0004] Using feedwater sludge to treat sewage has a good treatment effect. Using feedwater sludge to treat sewage has not been widely used, and it is basically in the stage of experimental research. The feedwater sludge used in the experimental research is laid in a blocky single layer, and the sewage treatment effect is not good. Well, the treated sewage cannot meet the national sewage discharge standards

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