A Coal Chemical Wastewater Treatment Process Adding Active Materials to Activated Sludge Tanks

A technology of coal chemical wastewater and activated sludge tank, which is applied in water/sludge/sewage treatment, water/sewage multi-stage treatment, biological water/sewage treatment, etc. Reduced performance, unstable operation of activated sludge tanks, etc., to achieve low price, strong adsorption effect, and improved biological activity

Active Publication Date: 2011-12-14
BEIJING GUODIAN FUTONG SCI & TECH DEV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A Coal Chemical Wastewater Treatment Process Adding Active Materials to Activated Sludge Tanks
  • A Coal Chemical Wastewater Treatment Process Adding Active Materials to Activated Sludge Tanks
  • A Coal Chemical Wastewater Treatment Process Adding Active Materials to Activated Sludge Tanks

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Embodiment 1

[0031] figure 2 A specific embodiment of the coal chemical industry wastewater treatment process described in the present invention is given. The coal chemical industry wastewater is stored in a wastewater regulating pool, and the regulating pool can make the sewage water quality in the pool uniform, and can also adjust the water output at the same time . The activated sludge tank adopts an ordinary aeration tank, and adopts a process of combining activated coke and biochemical sludge to synergistically treat coal chemical wastewater, including the following steps:

[0032] ① Lead the coal chemical wastewater in the wastewater regulating tank to the pretreatment unit, where the pretreatment unit is an air flotation tank, which removes oil and suspended solids from the wastewater 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 Pass the wastewater ...

Embodiment 2

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

[0039] ① Lead the coal chemical industry wastewater in the wastewater regulating tank to the pretreatment unit, where the pretreatment unit is a hydrolytic acidification tank, which removes oil and suspended solids from the wastewater to improve the biodegradability of the wastewater. The coal chemical industry wastewater flow The biodegradability in the wastewater is improved when passing through the pretreatment unit;

[0040] ② Pass...

Embodiment 3

[0045] As an 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, and the activated sludge tank adopts a circulating activated sludge tank (CASS) tank, and active coke is added in the tank to realize COD and efficient removal of ammonia nitrogen. The process of the coal chemical industry wastewater treatment process described in this embodiment is as follows: Figure 4 As shown, the specific steps are as follows:

[0046] ① Lead the coal chemical wastewater in the wastewater regulating tank to the pretreatment unit, where the pretreatment unit is an anaerobic reactor, which removes oil and suspended solids from the wastewater to improve the biodegradability of the wastewater. The coal chemical wastewater Improved biodegradability in wastewater when passing through said pretreatment unit;

[0047] ② Pass the wastewater treated by the pretreatment unit into the CAS...

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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 Applications(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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