Process for treating coal chemical wastewater by adding active material into activated sludge pool

A technology for activated sludge tanks and coal chemical wastewater, applied in water/sludge/sewage treatment, water/sewage multi-stage treatment, biological water/sewage treatment, etc. Long sewage treatment time and other problems, to achieve the effect of low price, strong adsorption effect, and increase residence time

Active Publication Date: 2013-02-13
BEIJING GUODIAN FUTONG SCI & TECH DEV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is to overcome the unstable operation of the activated sludge tank and the adsorption performance of the adsorption material in the existing coal chemical wastewater treatment process. reduced, or the sewage treatment time is long, the equipment cost is high, and the performance of the adsorption material cannot be fully utilized, so as to provide a coal chemical wastewater treatment process with stable operation, full utilization of the activity of the adsorption material, high sewage treatment efficiency and low equipment cost

Method used

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  • Process for treating coal chemical wastewater by adding active material into activated sludge pool
  • Process for treating coal chemical wastewater by adding active material into activated sludge pool
  • Process for treating coal chemical wastewater by adding active material into activated sludge pool

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Embodiment 1

[0031] figure 2 A specific implementation of the coal chemical wastewater treatment process of the present invention is given. The coal chemical wastewater is stored in a wastewater regulating tank, which can make the sewage water quality in the tank uniform, and can also adjust the water output. . The activated sludge tank adopts an ordinary aeration tank, and the process of combining activated coke and biochemical sludge to co-process coal chemical wastewater includes the following steps:

[0032] ① The coal chemical wastewater in the wastewater conditioning tank is passed into the pretreatment unit, where the pretreatment unit is an air flotation tank, and the wastewater is treated with oil removal and suspended matter removal to improve the biodegradability of the wastewater. The coal chemical wastewater flows through The biodegradability of wastewater in the pretreatment unit is improved;

[0033] ② The wastewater treated by the pretreatment unit is passed into the ordinary ...

Embodiment 2

[0038] As the implementation mode that can be changed in Example 2, such as image 3 As shown, the wastewater treated by the pretreatment unit is passed into the activated sludge tank, the activated sludge tank adopts a sequential batch activated sludge tank (SBR tank), and activated semi-coke is added to the tank to achieve Efficient removal of COD and ammonia nitrogen. The process of the coal chemical wastewater treatment process in this embodiment is as follows image 3 As shown, the specific steps are as follows:

[0039] ① The coal chemical wastewater in the wastewater conditioning tank is passed into the pretreatment unit, where the pretreatment unit is a hydrolysis acidification tank, and the wastewater is treated with oil removal and suspended solids removal to improve the biodegradability of the wastewater. The coal chemical wastewater flow The biodegradability in wastewater is improved when passing through the pretreatment unit;

[0040] ② Pass the wastewater treated by ...

Embodiment 3

[0045] As the embodiment that can be changed in embodiment 1, such as Figure 4 As shown, the wastewater treated by the pretreatment unit is passed into the activated sludge tank, the activated sludge tank adopts a circulating activated sludge tank (CASS) tank, and activated coke is added to the tank to achieve COD And efficient removal of ammonia nitrogen. The process of the coal chemical wastewater treatment process in this embodiment is as follows Figure 4 As shown, the specific steps are as follows:

[0046] ① The coal chemical wastewater in the wastewater conditioning tank is passed into the pretreatment unit, where the pretreatment unit is an anaerobic reactor, and the wastewater is treated with oil removal and suspended solids removal to improve the biodegradability of the wastewater. The biodegradability in wastewater is improved when flowing through the pretreatment unit;

[0047] ②The wastewater treated by the pretreatment unit is passed into the CASS pool, and activate...

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Abstract

The invention discloses a process for treating coal chemical wastewater by adding an active material into an activated sludge pool, wherein the active material and biochemical treatment are combined and coordinated to treat the coal chemical wastewater. In the process, the wastewater is introduced to the activated sludge pool in which active coke or active semicoke is added; and macromolecular organic matters and refractory organic matters are effectively removed when the wastewater flows through the active coke or the active semicoke. According to the invention, the problems of operation instability of the activated sludge pool, adsorptivity reduction of an adsorptive material, or long sewage treatment time, high equipment cost and unavailability in fully utilizing the performance of theadsorptive material in the prior art are solved, and the process for treating the coal chemical wastewater, which has the advantages of operation stability, availability of fully utilizing the adsorptive material, high sewage treatment efficiency and low equipment cost, is provided.

Description

technical field [0001] The invention relates to a wastewater treatment process, in particular to a coal chemical wastewater treatment process. Background technique [0002] Coal chemical industry refers to the industry that uses coal as raw material, converts coal into gas, liquid and solid products or semi-finished products through chemical processing, and then further processes them into chemical and energy products. During this process, the discharge of wastewater is very large. The wastewater generated here It is an organic wastewater with high COD, high ammonia nitrogen content, high chroma and high turbidity. If these pollutants are discharged into the environment, they will cause great harm to the ecological environment and human health. Therefore, the treatment of coal gasification wastewater has always attracted much attention in the field of coal chemical wastewater treatment at home and abroad. [0003] The process for treating coal chemical wastewater in the pri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/12C02F9/14
CPCY02W10/10
Inventor 刘振强张毅滕济林苗文华李若征曹效鑫程建龙何鹏
Owner BEIJING GUODIAN FUTONG SCI & TECH DEV
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