Sludge treatment system

Abstract

The invention relates to a sludge treatment system. An underflow opening of a pre-screen is connected with a first slurry storage tank; an underflow opening of the first slurry storage tank is connected with an inlet of a primary cyclone through a first slurry pump; an overflow port of the primary cyclone is connected with a liquid inlet port of a first overflow box; an underflow opening of the primary cyclone is connected with an underflow collecting tank; an overflow port of the first overflow box is connected with a second slurry storage tank; an underflow opening of the second slurry storage tank is connected with an inlet of a secondary cyclone through a second slurry pump; an underflow opening of the secondary cyclone is connected with the underflow collecting tank; an overflow port of the secondary cyclone is connected with a liquid inlet port of a second overflow box; a slurry discharge port of the second overflow box is connected with the second slurry storage tank; the underflow collecting tank is connected with a filter press or centrifuge; and a liquid level balance valve is arranged and used for plugging the slurry discharge port of the overflow box along with the liquid level height. The process route is optimized to enhance the sludge treatment efficiency. The slurry storage tanks capable of automatically implementing liquid level balance are matched to avoid idle suction of the slurry pump.

Description

technical field [0001] The invention relates to the field of mud treatment in the field of environmental protection, in particular to a mud treatment system. Background technique [0002] In the field of sludge or construction mud treatment, it is necessary to realize mud-water separation, river and lake dredging, urban pipe network sludge reduction treatment, tailings dry discharge, urban sewage treatment plant sludge desanding, etc. The requirements for the treated slurry When the discharge standard or recycling standard is met, the solid waste residue is landfilled, incinerated or recycled. [0003] At present, after the commonly used process mud is treated by a cyclone, the mud is dehydrated by a dewatering screen after being treated by a cyclone. After dehydration by the dewatering screen, the underflow continues to be separated by a cyclone, which increases the power consumption of the cyclone and the dewatering screen. [0004] In the previous mud treatment equipment...

AI Technical Summary

Problems solved by technology

If the slurry feeding speed is lower than the pumping speed of the slurry pump, the liquid level of the slurry in the slurry storage tank is too low, which will cause the slurry pump to suck up and seriously affect the service life of the slurry pump

For purifiers with manual monitoring and manual adjustment, the operator usually patrols the site and immediately adjusts the pulp intake manually, resulting in a lag in manual adjustment

Ultrasonic liquid level gauges also have disadvantages such as high cost, and the measurement accuracy cannot be guaranteed for slurry with large concentration fluctuations.

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