Coal Chemical Wastewater Treatment Process

A technology of sewage treatment and coal chemical industry, applied in the direction of oxidized water/sewage treatment, water/sewage multi-stage treatment, light water/sewage treatment, etc., can solve the problems of long time consumption, low removal rate, large energy consumption, etc., to reduce Time consumption and energy consumption, the effect of improving the ease

Active Publication Date: 2017-04-05
THE SIXTH CONSTR CO LTD OF CHINA NAT CHEM ENG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method has a good treatment effect on phenols and alkane compounds, but the removal rate of polycyclic and heterocyclic compounds such as naphthalene, pyrrole, pyridine, carbazole and biphenyl is still very low, and there is a Disadvantages such as long time and high energy consumption

Method used

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  • Coal Chemical Wastewater Treatment Process
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Examples

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example 2

[0039] A coal chemical wastewater treatment process, such as figure 1 As shown, including the following steps:

[0040] Step 1: Pour the coal chemical wastewater into the air flotation machine, and add polyaluminum chloride to the air flotation machine, air flotation treatment for 20 minutes, and then remove suspended solids;

[0041] Step 2: Make the coal chemical wastewater treated in step 1 flow into the reaction tank. The hydraulic residence time in the reaction tank is 100 minutes, and ozone is intermittently fed into the reaction tank to control the ozone in the coal chemical wastewater in the reaction tank. The content is 10 mg / L; wherein, a ceramic sieve plate is provided in the middle of the reaction tank to divide the reaction tank into two upper and lower spaces, the ceramic sieve plate is evenly loaded with a titanium dioxide coating, and the ceramic sieve An ultraviolet lamp is arranged above the plate, the ultraviolet lamp is driven by a motor, and the motor drives th...

example 3

[0052] A coal chemical wastewater treatment process includes the following steps:

[0053] Step 1. Pour the coal chemical industry sewage into the air flotation machine, and add polyaluminum chloride to the air flotation machine, air flotation treatment for 30 minutes, and then remove the suspended matter;

[0054] Step 2: Make the coal chemical wastewater treated in step 1 flow into the reaction tank. The hydraulic residence time in the reaction tank is 120 minutes, and ozone is intermittently fed into the reaction tank to control the ozone in the coal chemical wastewater in the reaction tank. The content is 15 mg / L; wherein, a ceramic sieve plate is arranged in the middle of the reaction tank to divide the reaction tank into two upper and lower spaces, the ceramic sieve plate is evenly loaded with a titanium dioxide coating, and the ceramic sieve An ultraviolet lamp is arranged above the board, the ultraviolet lamp is driven by a motor, and the motor drives the ultraviolet lamp t...

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Abstract

The invention discloses a treatment process of coal chemical sewage. The treatment process comprises the steps that the coal chemical sewage is introduced into a gas floatation clarifier for gas floatation treatment; the coal chemical sewage is made to flow into a reaction pool for oxidation treatment; the coal chemical sewage is made to flow into a hydrolysis acidification pool for hydrolytic acidification treatment; the coal chemical sewage is made to flow into an anoxic pool for anaerobic treatment; the coal chemical sewage is made to equivalently flow into a first aerobiotic pool, a second aerobiotic pool, a third aerobiotic pool and a third aerobiotic pool for aerobic treatment, wherein the oxygen concentration of the coal chemical sewage in the first aerobiotic pool is controlled to be 1-2 mg / L, the oxygen concentration of the coal chemical sewage in the second aerobiotic pool is controlled to be 2-3 mg / L, the oxygen concentration of the coal chemical sewage in the third aerobiotic pool is controlled to be 3-4 mg / L, and the oxygen concentration of the coal chemical sewage in the fourth aerobiotic pool is controlled to be 4-6 mg / L; the coal chemical sewage flows into a settling pool for sedimentation treatment. Photo-catalytic oxidation and ozonation are utilized, so that the difficulty of subsequent anoxic-aerobiotic biochemical treatment is reduced, treatment time is shortened, and energy consumption is reduced.

Description

Technical field [0001] The invention relates to a chemical wastewater treatment method, in particular to a coal chemical wastewater treatment process. Background technique [0002] Coal chemical wastewater is a kind of industrial wastewater containing refractory organic compounds. The organic pollutants in the wastewater are complex, including phenols, alkanes, aromatic hydrocarbons, cyanogens, heterocyclics, and ammonia nitrogen. The traditional coal chemical wastewater treatment method is generally: first carry out air flotation degreasing, and then carry out anoxic-aerobic biochemical treatment. This method has a good treatment effect on phenols and alkane compounds, but the removal rate of difficult-to-degrade naphthalene, pyrrole, pyridine, carbazole and biphenyl and other polycyclic and heterocyclic compounds is still very low, and there is consumption. Shortcomings such as long time and large energy consumption. Therefore, there is an urgent need to design and design a n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F1/32C02F1/78
Inventor 彭小平张效康陈召军散建明
Owner THE SIXTH CONSTR CO LTD OF CHINA NAT CHEM ENG
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