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Coking residual sludge treatment method

A technology for excess sludge and treatment methods, which is applied in the directions of sludge treatment, water/sludge/sewage treatment, dehydration/drying/thickened sludge treatment, etc., and can solve the problem of low efficiency and dehydration workload of coking excess sludge Large and other problems, to achieve the effect of cost reduction, stable and controllable quality, and stable coke quality

Inactive Publication Date: 2019-04-16
LIUZHOU IRON & STEEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a treatment method for coking excess sludge, which can solve the problems of heavy dehydration and low efficiency of coking excess sludge

Method used

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  • Coking residual sludge treatment method

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Embodiment Construction

[0022] The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:

[0023] figure 1 The coking residual sludge treatment system shown includes a mixed sludge tank 1, a mixed sludge well 2, a mixed sludge pump 3, a sludge flow meter 4, a water treatment solution tank 7, a metering pump 8, and a sludge dehydrator 9 , dewatered sludge buffer tank 10, flashboard 11, screw batcher 12, separated sewage tank 13, wherein, the mixed sludge well 2 is connected to the bottom of the mixed sludge pool 1, and the mixed sludge well 2 is connected with the mixed sludge pump 3 The sludge dewatering machine 9 is connected, and the sludge metering pump 4 is installed on the conveying pipe 5 connecting the mixed sludge pump 3 and the feed port of the sludge dewatering machine 9, and the rear pipeline of the sludge metering pump 4 is connected with a chemical conveying pipe 6. The medicine delivery pipe 6 is connected with the water treatm...

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Abstract

The invention discloses a coking residual sludge treatment method, and relates to the technical field of coking waste water treatment. According to the method, residual sludge with the moisture content being 98-99% is directly discharged into a mixed sludge tank from a biochemical system, and then discharged into a mixed sludge well from the tank bottom and pumped into a sludge dewaterer through amixed sludge pump by means of a sludge flow meter; meanwhile, a metering pump pumps a PAM solution with the concentration being 0.1% from a water treatment solution tank, the PAM solution enters a sludge flow meter rear pipeline, and the PAM solution is mixed with residual sludge and then enters the sludge dewaterer; dewatering is conducted until dewatered sludge with the moisture content being 70-80% falls into a dewatered sludge buffer tank, separated sewage automatically flows into a separation sewage tank through a separation sewage discharge pipe; an electric gate at the bottom of the dewatered sludge buffer tank is opened, a screw batcher is started, dewatered sludge is sent to a blending coal conveyor belt, and the dewatered sludge and blending coal from a blending cola tank are together conveyed to a coke oven for high-temperature coking. Accordingly, the problems that coking residual sludge dewatering blending workload is high, and the efficiency is low are solved.

Description

technical field [0001] The invention relates to the technical field of coking wastewater treatment, in particular to a treatment method for coking excess sludge. Background technique [0002] The excess sludge in the wastewater treatment system of the coking plant includes biochemical sludge and mixed sedimentation sludge. The domestic coking industry mostly uses the sludge dehydrator matched with the wastewater treatment system to remove the excess sludge from the wastewater treatment system. After dehydration, put it into the mud hopper, transport the dewatered sludge to the coal yard by vehicle, and then mix the dewatered sludge into the coking coal through the loading vehicle and send it to the coking chamber of the coke oven for coking, or simply directly mix it with coal on the belt It is sent to the coking chamber of the coke oven for coking. [0003] The treatment method of the above excess sludge has the following disadvantages: 1. Long process and low efficiency: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/125C02F11/147
CPCC02F11/125C02F11/14
Inventor 秦振清罗玲舒青平杨中贵夏羽祥王永树张天鸯彭荣林黄潮洲凌入敏张林杰韦东敏
Owner LIUZHOU IRON & STEEL
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