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A joint treatment process of coking wastewater and gas washing water

A coking wastewater and gas washing technology, which is applied in the field of water treatment, can solve the problems of complex coking wastewater, many types, and large concentration differences, and achieve the effects of improving degradation efficiency, improving ammonia distillation efficiency, and reducing treatment load

Active Publication Date: 2022-05-17
鄂托克旗建元煤焦化有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Corresponding wastewater will be produced in different processes. Due to the coking wastewater produced in the production process and its complexity, strong toxicity, large concentration differences, and many types, many wastewaters have recycling benefits, but some wastewaters have special pollutants. It is difficult to recycle, so in the wastewater treatment process, it is necessary to treat it differently or comprehensively according to different water quality conditions

Method used

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  • A joint treatment process of coking wastewater and gas washing water
  • A joint treatment process of coking wastewater and gas washing water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Coking wastewater and gas washing water in a coal chemical plant

[0036] (1) The pretreated coking wastewater enters the ammonia distillation tower, and lime is added to the ammonia distillation tower, and the pH in the ammonia distillation tower is controlled by lime to be 9.8-11.2;

[0037] (2) The coking wastewater treated by the ammonia distillation tower is transported to the microwave-electrocatalytic tower for electrocatalytic oxidation, and the catalyst is TiO 2 -Ce-diamond film catalyst, loaded on activated carbon / zeolite, a cathode plate is set on the side wall of the microwave-electrocatalytic tower, and the cathode plate is mixed with graphite plate, titanium plate and stainless steel plate; the regulated DC power supply The output current is 2000-6000A, an electrocatalytic sieve plate is set in the microwave-electrocatalytic tower, an anode electrode is set in the electrocatalytic sieve plate, and the microwave water treatment device is a pulse microwave w...

Embodiment 2

[0044] On the basis of Example 1, the sludge carbon is modified, the modification is soaking the sludge carbon in a magnesium chloride solution, the concentration of the magnesium chloride solution is 20g / L, and the modified sludge is obtained after soaking and air-drying. Peat, add the modified sludge carbon in the precipitation reaction process and the ammonia distillation tower process, the dosage is 5g / L, and then wash and separate the product after the precipitation reaction to obtain the sludge carbon fertilizer;

[0045] The sludge charcoal fertilizer contains struvite, and the sludge charcoal fertilizer is organically combined with the sludge charcoal to provide organic matter and nitrogen and phosphorus elements for the soil as a fertilizer.

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Abstract

The invention discloses a joint treatment process of coking wastewater and gas washing water. In the process, the gas washing water and coking wastewater are mixed and treated. Excess fluoride ions in the gas washing water are firstly removed by excess calcium ions, and at the same time the gas is washed. The organic matter and phosphorus in the water can provide nutrients for the subsequent biosorption pool and fully absorb the refractory organic matter in the coking wastewater.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a coal chemical industry wastewater treatment system. Background technique [0002] The coking industry uses coal as raw material, mainly composed of coking system, gas purification, etc. During the carbonization process of coal in the coke oven, a large amount of raw gas will be produced, which contains a large amount of chemical substances generated during carbonization. Corresponding wastewater will be produced in different processes. Due to the coking wastewater produced in the production process and its complexity, strong toxicity, large concentration differences, and many types, many wastewaters have recycling benefits, but some wastewaters have special pollutants. It is difficult to recycle, so in the wastewater treatment process, it needs to be treated differently or comprehensively according to different water quality conditions. Coking wastewater contains a l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/10C02F11/145C02F101/14C02F101/16C02F101/30C02F101/38
CPCC02F9/00C02F11/10C02F11/145C02F1/20C02F1/302C02F1/4672C02F1/583C02F3/12C02F1/444C02F3/30C02F1/04C02F2101/16C02F2101/38C02F2101/14C02F2305/06C02F2101/30C02F1/66Y02W10/37
Inventor 苏华汤亚勇季丹萍
Owner 鄂托克旗建元煤焦化有限责任公司