Suzhou's first sludge power generation success

After one month of trial operation, the first sludge power generation in Suzhou was declared successful. The reporter learned from the Suzhou Drainage Management Office that the waste produced by the urban sewage treatment plant in the city, the sludge, has a new place. After being shipped to Changshu as a raw material for organic fertilizer in September last year, it was transported to Wuzhong District River before the Spring Festival this year. In the thermal power plant incineration power generation, 6 tons of sludge is equivalent to 1 ton of raw coal after energy replacement.

In order to realize the harmlessness and resource utilization of sludge, Jiangyuan Thermal Power Plant invested 8 million yuan to carry out technical transformation, and after repeated trials by engineers and technicians, it finally conquered technologies such as “low-cost sludge drying treatment” and “sludge sludge burning”. Difficulties, so that the sludge with water content up to 80%% can be used for power generation. The first-phase design capacity is 100 tons of sludge per day.

Sludge is a renewable energy source, but it is not easy to use it well. Previously, Tiannian Company, which cooperated with Nannong University in the city, carried out the practice of making organic fertilizer. After exploring and breaking through the technical obstacles, it is now operating smoothly. The organic fertilizer made from sludge not only has high nitrogen content, but can reach more than 14%%. The fertilizer efficiency is much higher than that of organic manure produced by livestock manure, and it is more conducive to the absorption of crops. In the process of making organic fertilizer, 100% of the sludge is used, which is truly reduced, harmless and resourced. Tian Niang's products are mainly used for fruit trees and tea trees. The products are very competitive. They won the bid in the previous bidding and became the supplier of agricultural fertilizers in Dongshan.

At present, the daily production of sludge in Suzhou City is about 150-200 tons, of which about 70 tons is used for organic fertilizer production and about 50 tons is used for power generation. The relevant person in charge of the Municipal Drainage Management Office stated that all the sludge in our city will be treated harmlessly.

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