A sludge drying system
A sludge drying and drying technology, applied in water/sludge/sewage treatment, sludge treatment by temperature control, dewatering/drying/concentrated sludge treatment, etc., can solve equipment failure, stickiness, blockage and transportation equipment and other problems, to ensure stable operation and long-term periodicity, improve drying efficiency, and ensure full utilization.
Active Publication Date: 2018-01-23
PULIZI ENVIRONMENT TECH SUZHOU CO LTD
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Problems solved by technology
[0004] The technical problem solved by the present invention: in the drying process of municipal or industrial sludge, when the moisture content of the sludge reaches between 55% and 25%, the sludge is likely to be in the interval of the viscous zone. At the same time, the sludge will stick to the heat exchange surface of the equipment, block the transportation equipment, cause the efficiency of the whole sludge drying equipment to be low, and seriously cause equipment failure and safety accidents
Method used
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Embodiment Construction
[0028] A sludge drying system, including a first drying production line and a second drying production line figure 1 not shown in
[0029] like figure 1 , the first drying production line includes a first wet sludge storage bin 10, a first dryer 20 connected to the first wet sludge storage bin, and a dry sludge storage bin 30; the second drying The production line includes a second wet sludge storage silo, a second dryer with a feed port connected to the second wet sludge storage silo, and the discharge port of the second dryer passes through the second dry sludge discharge screw conveyor and the shared drying machine. The sludge discharge scraper is connected to the dry sludge storage bin.
[0030] The discharge port of the first dryer is connected to the feed port of the dry sludge recovery screw conveyor 40 through the dry sludge discharge screw conveyor 201, and the dry sludge recovery screw conveyor is provided with a first discharge 41, the second discharge port 42, a...
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The invention discloses a sludge drying system. The sludge drying system comprises a production line I equipped with a first dryer and a production line II equipped with a second dryer, wherein the discharge opening of the first dryer is connected with the feed openings of the first dryer and the second dryer. During actual production, the first dryer enables sludge with the water content of equal to or less than 12% to be back-mixed into the first dryer and mixed with fresh sludge with the water content of 80% to form sludge with the water content of 25%; when the second dryer meets sludge with the water content of 25-55%, the first dryer enables sludge with the water content of less than 12% to be back-mixed into the second dryer so as to assist produced sludge in striding across a sludge adhesion area with the water content of 25-55%; when the second dryer does not meet sludge with the water content of 25-55%, the second dryer is connected in parallel with the first dryer, the water content of produced sludge is 55%. Therefore, sludge produced by the sludge drying system can stride across the sludge adhesion area with the water content of 25-55%.
Description
Technical field: [0001] The invention relates to the technical field of environmental protection, in particular to a sludge drying system. Background technique: [0002] In urban production and life, various wastes such as industrial waste and domestic waste are often produced, among which a large amount of sludge will be produced in the process of sewage treatment. With the development of domestic sewage treatment business, the total water treatment volume of sewage plants And the degree of treatment will continue to expand and improve, and the amount of sludge produced is also increasing. In addition to a large amount of organic matter and rich nitrogen, phosphorus and other nutrients, there are also heavy metals, pathogenic bacteria and parasites in sewage sludge. Toxic and harmful substances such as pollutants, so in order to prevent its pollution, it needs to be treated twice. [0003] In order to reduce pollution and avoid the production of greenhouse gases, the sludg...
Claims
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IPC IPC(8): C02F11/12C02F11/18
CPCC02F11/12C02F11/18C02F2303/06
Inventor 周东
Owner PULIZI ENVIRONMENT TECH SUZHOU CO LTD