Fermentation device for sludge compost treatment and treatment method using same

Abstract

The invention discloses a fermentation device for sludge compost treatment and a treatment method using the same. The device comprises a fermentation cabin body, wherein the bottom of the fermentation cabin body is externally provided with a forced ventilation device; a filter layer is laid at the bottom of the inner cavity of the fermentation cabin body; a percolate collecting groove is arranged under the filter layer; and the top of the fermentation cabin body is connected with the bottom of a waste gas treatment system through a pipeline. The treatment method disclosed by the invention comprises the following steps of: firstly, adding an organic conditioner to regulate the water content and C / N of sludge so as to form sludge composting, and then simultaneously inoculating a composite bactericide suspension and a surfactant solution in the sludge composting; then placing the sludge composting in the fermentation device disclosed by the invention, and carrying out primary fermentation by adopting batch-type static forced ventilation treatment; and finally, carrying out secondary fermentation so as to complete compost treatment. The treatment method disclosed by the invention is high in resource utilization rate and treatment efficiency, is environment-friendly and safe, and is especially suitable for small-sized sewage treatment plants.

Description

technical field [0001] The invention relates to a sludge treatment device and a treatment method, in particular to a fermentation device mainly used in sewage treatment plants and a treatment method thereof. Background technique [0002] In the process of sewage treatment, a large amount of sludge will be produced, which accounts for about 0.3% to 0.5% of the treated water (based on a water content of 97%). The sludge contains more toxic and harmful substances, such as parasite eggs , pathogenic microorganisms, bacteria, synthetic organic matter and heavy metal ions, etc.; sludge also contains a large number of useful substances such as plant nutrients (nitrogen, phosphorus, potassium), organic matter and water. How to make sludge harmless and effectively use it is an important problem now. The purpose of sludge treatment is firstly to reduce organic matter and achieve stabilization; secondly, to reduce sludge volume and subsequent sludge disposal costs to achieve reduction...

AI Technical Summary

Problems solved by technology

These sludge treatment processes have their own advantages and disadvantages, but from the perspective of practical experience and treatment effects, anaerobic digestion, as the most commonly used sludge biochemical treatment method in the world, is more suitable for large-scale sewage treatment plants; the initial stage of aerobic digestion process With less investment, short residence time, small land occupation, and simple operation, it is suitable for the stabilization treatment of sludge in small sewage treatment plants, but it also has the disadvantages of poor treatment effect in winter, low inactivation rate of pathogenic bacteria, and inability of digested sludge The disadvantages of achieving safe land use; the investment of alkali stabilization (such as lime stabilization) is low, but its scope of application has certain limitations; sludge drying has a better effect on the control of pathogens and the utilization of nutrients in sludge, but its The labor intensity is high, and the exhaust gas must be treated reasonably; sludge aerobic composting can obviously kill pathogenic bacteria and parasite eggs, convert some organic matter into humus, reduce the moisture content of sludge, and make nutrients easy to be absorbed by plants. Absorb, promote plant growth, improve the physical, chemical and biological properties of the soil

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