Efficient sludge aerobic fermentation diagnostic method

Abstract

The invention discloses an efficient sludge aerobic fermentation diagnostic method. The efficient sludge aerobic fermentation diagnostic method comprises the following steps that dewatered sludge and a conditioner are evenly mixed according to a certain proportion, the initial moisture content is made to be around 60-65%, and the mixture is put into a fermentation trough to be fermented; a temperature feeler lever and an air extracting probe connected with an air extracting pump are inserted into the fermentation trough; the other end of the air extracting pump is connected with an air inlet room provided with an oxygen sensor, an ammonia gas sensor and a hydrogen sulfide sensor, and the oxygen sensor, the ammonia gas sensor and the hydrogen sulfide sensor are connected with a transmitter in sequence; the temperature feeler lever and the transmitter are connected with an industrial control display screen and a programmable logic controller through wires. According to the efficient sludge aerobic fermentation diagnostic method, the fermentation effects under different ventilation strategies are judged by monitoring temperature data and the concentration data of oxygen, ammonia gas and hydrogen sulfide on line so that failure reasons of fermentation can be conveniently found, the fermentation process can be fed back, regulated and controlled, sludge aerobic fermentation is automatically diagnosed, the fermentation effect is improved, and fermentation time is shortened.

Description

technical field [0001] The invention relates to a fermentation diagnosis method, in particular to a high-efficiency sludge aerobic fermentation diagnosis method. Background technique [0002] In recent years, the scale of urban sewage plants has continued to expand, and the increase in the amount of sewage treatment has also produced a large amount of excess sludge. If the remaining sludge is not disposed of properly, it will cause immeasurable and serious consequences to the surrounding environment. The safe and effective treatment and disposal of sludge is an inevitable requirement for my country's sustainable development. Different from anaerobic digestion, sludge aerobic fermentation has the advantages of short fermentation period, low operating cost, and less odorous gas release. Land use after sludge high-temperature aerobic fermentation has become one of the main treatment methods for urban sludge in my country. [0003] In the process of aerobic fermentation, tempe...

AI Technical Summary

Problems solved by technology

When the ventilation rate is small, it will cause low oxygen content, which is not conducive to the survival of aerobic microorganisms; when the ventilation rate is large, it is not conducive to maintaining the temperature of the pile and will increase the release of volatile gases

[0006] Conventional diagnostic methods for the sludge fermentation process are generally based on the experience of the staff to adjust the parameters of the blower, or the technicians hold temperature, oxygen and other probes to measure and judge the pile multiple times, and adjust the operating parameters of the blower for verification and diagnosis. The process cycle is long, labor-intensive and the accuracy is not high. The diagnosis process cannot be carried out automatically and is not intelligent enough.

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