Sludge thermal hydrolysis and anaerobic digestion integrated treatment process system

Abstract

The invention discloses a sludge thermal hydrolysis and anaerobic digestion integrated treatment process system. The process system comprises a sludge feed pond, a sludge pipe, a sludge feed pump, a sludge concentrator, a pulping tank, an agitation blade, an agitation shaft, a temperature sensor, an agitation motor, a pressure sensor, a thermal hydrolysis reaction tank, a thermal hydrolysis catalyzing pipe filled with a nickel-based catalyst, a vapor generator, a decompression tank, a vapor storage tank, an advanced oxidation reaction tank, an ozone pipe, an ozone catalyzing pipe filled with atitanium-based catalyst, an ozone generator, a digestion tank, a plate-and-frame filter press, a sludge discharge pond, a methane gas connecting pipe and a methane gas storage tank. The sludge thermal hydrolysis and anaerobic digestion integrated treatment process system has the advantages of low energy consumption, strong bacterium killing capability, good sludge dehydration performance, small dry sludge output, high content of methane gas in biogas, low content of hydrogen sulfide and the like when being applied to sludge treatment.

Description

technical field [0001] The invention belongs to the technical field of sludge treatment, in particular to an integrated treatment process system of sludge thermal hydrolysis and anaerobic digestion. Background technique [0002] Sludge is a by-product of the sewage treatment process. It has the characteristics of high water content, fine particles, and light specific gravity. It contains a large amount of organic matter, nitrogen and phosphorus, pathogenic microorganisms, parasite eggs, viruses, and heavy metal ions. The organic matter in the sludge is perishable and produces stench, which is easy to breed mosquitoes and flies; nutrients such as nitrogen and phosphorus will flow into the surface or underground water body under the washing of rainwater, causing water pollution; untreated or substandard treated sludge is used as agricultural fertilizer or landfill, pathogenic bacteria and parasites enter the soil, and directly or indirectly contact with humans or animals, enda...

AI Technical Summary

Problems solved by technology

Many units in China, represented by Tsinghua University, have also conducted research on the thermal hydrolysis process, but the technology is not yet mature, and there is an urgent need to develop an integrated treatment process system for sludge thermal hydrolysis and anaerobic digestion with independent intellectual property rights

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