Buffer conditioning system for lime sludge

Abstract

The invention discloses a buffer conditioning system for lime sludge. The buffer conditioning system comprises a buffer conditioner, an automatic sludge inlet valve, a sludge circulating pump, a sludge feeding pump, an automatic conditioning water inlet valve, automatic flushing valves and a control system, wherein sludge enters the buffer conditioner from the top through the automatic sludge inlet valve, and sludge concentration meters are mounted behind the automatic sludge inlet valve; the sludge is discharged from the bottom of the buffer conditioner in a sludge circulating system and is circulated into the buffer conditioner from the top by the sludge circulating pump, the sludge concentration meters are mounted on a sludge circulating pipeline, and automatic sludge discharging valves are mounted at a sludge outlet in the bottom of the buffer conditioner; sludge is discharged from the bottom of the buffer conditioner in a sludge feeding system and is pumped into a subsequent sludge dewatering system through the sludge feeding pump; conditioning inlet water enters the buffer conditioner from the top through the automatic conditioning water inlet valve; and automatic flushing systems and the automatic flushing valves are arranged on all sludge pipelines.

Description

【Technical field】 [0001] The invention belongs to the technical field of water treatment and relates to a lime sludge buffer conditioning system. 【Background technique】 [0002] At present, before lime sludge enters the dehydration system, sludge ponds or sludge concentration ponds are mostly used. The role of the sludge pond is only to store lime sludge, while the sludge concentration pond is used to concentrate sludge. These two types of equipment are used in municipal There is no problem with sludge, but because lime sludge has properties such as easy sedimentation and hardening, these two types of equipment are not suitable for use. [0003] Lime sludge is easy to settle, so the water content of the sludge discharged from the clarifier is generally about 97-98%. The sludge with this concentration does not need to be concentrated after entering the subsequent dehydration system, because the general dehydrator requires the sludge concentration The moisture content is just...

AI Technical Summary

Problems solved by technology

If it enters the dehydration system after concentration, the torque of the dehydrator will increase, and the sludge cannot be removed, and the equipment will be blocked and the machine will stop.

Therefore, it is not suitable to use sludge thickening tank for lime sludge

[0004] The role of the sludge pond is only to store lime sludge, which is generally a square cement pond. Because lime sludge is easy to settle, it is easy to settle or even harden in the sludge pond. The concentration of the extracted sludge changes very quickly, and the most important requirement of the sludge dewatering equipment is to require the concentration of the sludge to be stable. If the concentration of the sludge changes very quickly or the range is too large, it will cause the machine to stop

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