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A pretreatment system and method for semi-coke wastewater

A technology for charcoal wastewater and pretreatment, applied in natural water treatment, multi-stage water treatment, water/sewage treatment, etc., can solve problems such as poor drug reaction effect, environmental pollution, and low method efficiency.

Active Publication Date: 2021-09-14
西安恒旭科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method of settling in the sedimentation tank has low efficiency, and the indicators of coal tar content and suspended solids content in the water after treatment are not stable due to the influence of the internal structure.
[0004] Since the sedimentation tank is an open pool in the open air, it occupies a large area, and due to the large total volume, when adding wastewater treatment drugs to the wastewater tank, the dosage is large, and the drug reaction effect is poor, and the wastewater treatment efficiency is low; on the other hand Semi-coke wastewater contains a large amount of harmful substances, which are easy to volatilize in open wastewater pools or enter the air with steam, polluting the environment

Method used

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  • A pretreatment system and method for semi-coke wastewater
  • A pretreatment system and method for semi-coke wastewater
  • A pretreatment system and method for semi-coke wastewater

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Embodiment 1

[0052] In order to overcome the problems existing in the current semi-coke wastewater pretreatment process, the present invention provides a semi-coke high-concentration organic wastewater resource pretreatment system with high-efficiency separation system, reliable operation, stable operation and no pollutant generation.

[0053] Specifically as figure 1 as shown, figure 1 Schematic diagram of the structure of the semi-coke wastewater pretreatment system provided for this embodiment; this embodiment provides a semi-coke wastewater pretreatment system, including a buffer pretreatment device connected in sequence, a multiphase flow high-efficiency separation device, a coagulation device and a double Media filtration device, wherein, the input end of the buffer pretreatment device is connected with the semi-coke wastewater output pipe, and the semi-coke wastewater first enters the buffer pretreatment device. Under the action of gravity, heavy oil and sludge deposit, and light o...

Embodiment 2

[0080] On the basis of the above-mentioned embodiments, the embodiment of the present invention utilizes the buffer pretreatment device, the multiphase flow high-efficiency separation device, the coagulation device and the dual-media filter device connected in sequence in the first embodiment to carry out the pretreatment method for the semi-coke wastewater, specifically The implementation process is as figure 2 as shown, figure 2 It is a flow chart of the semi-carbon wastewater pretreatment method provided in this embodiment. This blue charcoal wastewater pretreatment method comprises the following steps:

[0081] Step 1: Separating heavy oil from the semi-coke wastewater to obtain secondary wastewater; specifically, adding a demulsifier to the semi-coke wastewater using a static mixer; adding the demulsifier to the semi-coke wastewater in the buffer Stand still in the pretreatment device for N hours to separate the heavy oil and water, the heavy oil enters the oil produc...

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Abstract

The invention relates to a semi-coke wastewater treatment system and method. The treatment system includes a sequentially connected buffer pretreatment device, a multiphase flow high-efficiency separation device, a coagulation device and a dual-media filter device. The buffer pretreatment device, the The multi-phase flow high-efficiency separation device, the coagulation and flocculation device and the dual-media filter device are also respectively connected to the oil collection tank. The semi-coke wastewater pretreatment system of the present invention is a closed system, and a targeted treatment process is adopted for each level of wastewater, so that the wastewater treatment efficiency is greatly improved compared with the existing static treatment method, and after each level of treatment, it will reach At the next level, the processing levels do not interfere with each other, and can effectively solve the problem of harmful gas leakage; the footprint is small and the processing efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of coal chemical wastewater treatment, and in particular relates to a pretreatment system and method for semi-coke wastewater. Background technique [0002] Semi-coke wastewater, also known as semi-coke wastewater, refers to a kind of industrial wastewater formed in the process of low-metamorphism coal dry distillation (about 600-800°C), gas purification, and semi-coke steam quenching. The wastewater has "four high "One less" (high COD, high oil, high ammonia nitrogen, high phenol, less waste water production), which contains a large number of refractory, highly toxic and complex components, such as ammonia, phenol, petroleum and other substances. [0003] At present, there is no mature semi-coke wastewater pretreatment process at home and abroad. Semi-coke enterprises directly settle the semi-coke wastewater through the sedimentation tank, and then simply remove the coal tar and solid suspended matter in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/04C02F103/34
CPCC02F1/001C02F1/40C02F1/52C02F1/5281C02F9/00C02F2103/34C02F2301/08
Inventor 孔庆伟鲁礼民陈芳
Owner 西安恒旭科技股份有限公司
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