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Heavily-polluted semi-coke wastewater treatment process

A semi-coke wastewater and treatment process technology, applied in water/sewage treatment, heating water/sewage treatment, light water/sewage treatment, etc., can solve the problems of high cost, high chloride ion concentration, and large amount of sludge, and achieve Reduced operating costs and reduced COD

Pending Publication Date: 2022-01-11
山东亚泰国宇环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, the present invention aims to propose to solve the problem that the amount of sludge produced by the heavily polluted semi-coke wastewater in the prior art is large, the cost is high, and the concentration of chloride ions in the treated heavily polluted semi-coke wastewater is too high

Method used

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  • Heavily-polluted semi-coke wastewater treatment process
  • Heavily-polluted semi-coke wastewater treatment process
  • Heavily-polluted semi-coke wastewater treatment process

Examples

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Embodiment 1

[0072] S1: Pretreat 1L of wastewater, remove oil and filter the wastewater, then add 0.4L of demulsifier to the wastewater, and keep stirring; the demulsifier is an alkyl chain of C 8 h 17 Compound A;

[0073] S2: Distill the wastewater treated in S1, the temperature inside the ammonia distillation tower is 100°C, then adjust the pH of the wastewater to neutral, and add 0.5g of tricobalt tetroxide;

[0074] S3: Pre-oxidize the wastewater under light conditions, filter the wastewater, and then perform super oxidation under light conditions, and add 0.5g of tricobalt tetroxide and 0.25L of 98% hydrogen peroxide solution;

[0075] S4: neutralize the waste water, and then filter it.

[0076] The situation of comparative example 1 and comparative example 4 and the sediment of embodiment 1, and the situation after demulsification are shown in table 1, and it can be seen from table 1 that in embodiment 1.

[0077] Table 1: Comparison of Comparative Example 1-Comparative Example 4 ...

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Abstract

The invention provides a heavily-polluted semi-coke wastewater treatment process which comprises the following steps of: S1, pretreating wastewater, performing oil removal and filtration treatment on the wastewater, then adding a demulsifier into the wastewater, and continuously stirring; S2, performing ammonia distillation treatment on the wastewater treated in the step S1, then adjusting the pH value of the wastewater until the wastewater is neutral, and adding a photosensitizer; S3, carrying out pre-oxidation treatment on the wastewater under an illumination condition, filtering the wastewater, then carrying out super oxidation under the illumination condition, and adding a photosensitizer and hydrogen peroxide; and S4, neutralizing and filtering the wastewater to obtain clear water. The heavily-polluted semi-coke wastewater treatment process provided by the invention is low in cost, small in generated sludge amount and good in water purification effect.

Description

technical field [0001] The invention belongs to the field of sewage treatment, and in particular relates to a treatment process for heavily polluted semi-carbon wastewater. Background technique [0002] Since tar contains natural interface active substances such as asphalt, colloid, quinoline polar substances, coal powder, free carbon and other emulsifiers, tar and ammonia are prone to emulsification under high temperature and high-speed stirring during the refining process. not easily separated (see figure 2 ). At present, the demulsification process is not adopted in the existing sewage treatment process of the semi-coke industry, because the semi-coke wastewater contains a large amount of tar and ammonia emulsion, which will increase the pressure and resistance of the ammonia distillation system, which in turn will prolong the ammonia distillation time And reduce the efficiency and life of ammonia distillation equipment, increase heat consumption and equipment maintenan...

Claims

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Application Information

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IPC IPC(8): C02F9/10C02F101/12
CPCC02F9/00C02F2101/12C02F1/40C02F1/001C02F1/04C02F1/66C02F1/30C02F1/722C02F2301/08C02F2305/023
Inventor 傅国琳维杰
Owner 山东亚泰国宇环保科技有限公司
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