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Activated brown coal and coking wastewater treatment process applying activated brown coal

A treatment process and a technology for activating lignite, which is applied in the direction of adsorption water/sewage treatment, multi-stage water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of high energy consumption and low removal rate, and achieve lightening treatment Load, good adsorption effect, cost reduction effect

Inactive Publication Date: 2016-01-06
SHANDONG SWAN WATER ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In the anoxic-aerobic biochemical section, the main content at present is that the removal rate is not high and the energy consumption is large

Method used

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  • Activated brown coal and coking wastewater treatment process applying activated brown coal
  • Activated brown coal and coking wastewater treatment process applying activated brown coal
  • Activated brown coal and coking wastewater treatment process applying activated brown coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A treatment process for activated lignite and coking wastewater using the activated lignite, wherein the activated lignite is activated with an alkaline solution for the mineral lignite, and the specific activation steps are as follows:

[0038] Firstly, the mineral lignite is first crushed into particles with a particle size of 5mm to 8mm, and then the lignite particles are placed in a corrosion-resistant container, and then 10wt% NaOH solution is added to soak the lignite. The volume ratio of the two is NaOH solution: lignite Particles=3:1, soaking time 24h; the lignite activated by the above-mentioned lye is taken out from the lye and washed with tap water to neutrality, then placed in a blast drying oven at 105°C and dried to constant weight;

[0039] Apply the above-mentioned coking wastewater treatment process of activated lignite, the specific steps are as follows: After the coking wastewater is pretreated by cooling, adjustment, oil separation and coagulation air...

Embodiment 2

[0043] A treatment process for activated lignite and coking wastewater using the activated lignite, wherein the activated lignite is activated with an alkaline solution for the mineral lignite, and the specific activation steps are as follows:

[0044] Firstly, the mineral lignite is crushed into particles with a particle size of 8 mm to 10 mm, and then the lignite particles are placed in a corrosion-resistant container, and then 20 wt % of NaOH solution is added to soak the lignite. The volume ratio of the two is NaOH solution: lignite Particles = 2:1, soaking time 24h; the lignite activated by the above alkaline solution is taken out from the alkaline solution, washed with tap water until neutral, and then dried in a blast drying oven at 105°C until it reaches a constant weight. ;

[0045] Apply the above-mentioned coking wastewater treatment process of activated lignite, the specific steps are as follows: After the coking wastewater is pretreated by cooling, adjustment, oil...

Embodiment 3

[0051] A treatment process for activated lignite and coking wastewater using the activated lignite, wherein the activated lignite is activated with an alkaline solution for the mineral lignite, and the specific activation steps are as follows:

[0052] First, the mineral lignite is crushed into particles with a particle size of 9mm to 10mm, and then the lignite particles are placed in a corrosion-resistant container, and then 30wt% NaOH solution is added to soak the lignite. The volume ratio of the two is NaOH solution: lignite Particles = 1:1, soaking time 24h; the lignite activated by the above lye is taken out of the lye, washed with tap water until neutral, and then dried in a blast drying oven at 105°C to constant weight.

[0053] Apply the above-mentioned coking wastewater treatment process of activated lignite, the specific steps are as follows: After the coking wastewater is pretreated by cooling, adjustment, oil separation and coagulation air flotation, first use activ...

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Abstract

The invention relates to the field of environment friendliness and in particular relates to activated brown coal and a coking wastewater treatment process applying the activated brown coal. Specifically, the activated brown coal is used as an adsorbing material to perform pretreatment on coking wastewater, the treated coking wastewater is fed into an inner circulation anaerobic bioreactor to be treated and then is subjected to conventional anoxia and aerobiotic treatment and advanced treatment, and finally, standard discharging is achieved. Compared with the prior art, for the coking wastewater treatment process disclosed by the invention, the adopted activated brown coal can be recycled, absorbing amount is high, and is far lower in cost is fat lower than that of activated carbon; simultaneously, the inner circulation anaerobic bioreactor is used for treatment instead of a common underground anaerobic organism pool, the treatment efficiency of anaerobic organisms is greatly improved, the load of follow-up treatment processes is reduced, the standard discharging is achieved, and a blank of coking wastewater treatment in the prior art is made up.

Description

technical field [0001] The invention relates to the technical field of environmental protection, and relates to an activated lignite and a treatment process for coking wastewater using the activated lignite. Background technique [0002] Coke is an important metallurgical industry raw material, which is made by high-temperature dry distillation of coking coal. A large amount of waste water is produced in the process of dry distillation of coking coal, gas purification and production of a series of chemical products with tar as raw material. These wastewaters mainly include: 1. Remaining wastewater after dephenolization and ammonia distillation; 2. Crude phenol separation water; 3. Gas water seal and guide water; 4. Maintenance wastewater in the recovery section; 5. Wastewater generated by accidental overflow ; 6. Part of the final cooling water that needs to be replaced with a nitrogen content of 400 mg / l; 7. Equipment cleaning wastewater; 8. Part of domestic sewage, etc. ...

Claims

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Application Information

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IPC IPC(8): B01J20/24B01J20/32C02F1/28C02F9/14
Inventor 冯建民庞来源朱作雪张玉芬李兴华
Owner SHANDONG SWAN WATER ENG
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