Sludge treatment system and method thereof

Abstract

The invention discloses a sludge treatment system and a method thereof, wherein the sludge treatment system comprises a pump, an ozone generation device, an ejector and a pipeline reactor which are orderly connected by pipes. The sludge treatment system comprises the following steps of: (1) when sludge water to be treated is conveyed to the ejector by the pump in a certain speed, a side inlet of the ejector generates negative pressure to suck ozone generated by the ozone generation device, the sludge water and the ozone are mixed to form a mixture; and (2) the mixture enters a pipe reactor by a pipe, and the mixture is fully contacted with a catalyst layer in the pipeline reactor, to carry out oxidation reduction reaction under catalysis of the catalyst. The sludge treatment system implements modularization production of a sludge deweighting treatment system, does not need to reconstruct a current sludge system, eliminates offensive odor of the sludge treatment system and an outward mud cake, reduces energy consumption in a production process, and reduces a sludge discharge total amount of the system.

Description

technical field [0001] The invention relates to the technical field of sludge treatment, in particular to a sludge treatment system and a method thereof. Background technique [0002] The biological activated sludge process is the most widely used and mature sludge treatment technology, with low investment and operation costs and stable treatment effect. However, there is a problem with the activated sludge method, that is, a large amount of excess sludge will be generated, and the transportation and treatment costs of excess sludge account for a large proportion of the total operating costs, and there are still many conditions and restrictions in the treatment. At present, my country's urban sludge treatment volume is about 30 billion m3 / a, and biochemical sludge with a water content of 98% is about 200 million m3 / a, and the remaining sludge output will still grow at an average annual rate of 15%. 10 million t / a and oil refinery, the annual production of hydrous sludge is ...

AI Technical Summary

Problems solved by technology

At present, according to domestic and foreign technical indicators, 15-21KWh of electricity is required to produce 1kg of ozone. Even if industrialized oxygen is used instead of air as a raw material, 8KWh of electricity consumption is required. A 16kg / h ozone generator needs to consume 240-336KWh of electricity. Its equipment investment, power system configuration, and operating costs are all factors that have to be considered by sludge treatment owners

[0008] Therefore, the sludge treatment system in the prior art has the following disadvantages: the residence time of ozone after entering the reactor is short, the sludge and ozone cannot be fully contacted, the utilization rate of ozone is low, the proportion of ozone input is high, the energy consumption is high, and the operating cost High, it is difficult to promote and apply on a large scale

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