Advanced treatment technology of petrochemical wastewater

Abstract

The invention discloses an advanced treatment technology of petrochemical wastewater. A composite treatment agent prepared from modified starch, siliceous carbonate, aluminium hydroxide, polyferric sulfate, polysilicon aluminum sulfate, calcite powder, opal powder, sodium hypochlorite, poly-aluminum calcium chloride, sodium hydroxide caustic soda flakes, glacial acetic acid, 3-Oxo-1-cyclopentanecarboxylic acid, potassium ethylate, pilocarpine and a coagulant aid. The composite treatment agent is matched with corresponding water treatment technologies including adsorption, treatment agent treatment, anaerobic treatment, photo-catalytic oxidation, sodium hypochlorite oxidation, aeration, electric flocculation, electroflotation and the like, so that COD, the oil content, the benzopyrene content and chroma of treated wastewater are obviously reduced, the requirements of environment protection standard can be met, and application prospects are good.

Description

technical field

[0001] The invention relates to the technical field of harmless treatment of industrial wastewater, in particular to an advanced treatment process for petrochemical wastewater. Background technique

[0002] The petrochemical industry, referred to as petrochemical industry, refers to the processing industry that uses petroleum and natural gas as raw materials to produce petroleum products and petrochemical products. The petrochemical industry is a basic industry. It provides supporting services and services for agriculture, energy, transportation, machinery, electronics, textiles, light industry, construction, building materials and other industries and people's daily life, and occupies a pivotal position in the national economy. However, petrochemical production will produce a large amount of wastewater at the same time, mainly containing oil, ammonia nitrogen, heavy metals, macromolecular organic matter, and ring-shaped refractory organic matter. For exampl...

Examples

Embodiment 1

[0026] (1) Discharge the industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of the cinder is 1.5mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0027] (2) Collect the supernatant after the precipitation treatment, and add a composite treatment agent according to the dosage of 20mg / L of wastewater. The composite treatment agent is composed of the following components: 50 parts of modified starch, 45 parts of silicon carbonate, hydrogen 40 parts of alumina, 35 parts of polyferric sulfate, 30 parts of polysilicon aluminum sulfate, 20 parts of calcite powder, 15 parts of opal powder, 10 parts of sodium hypochlorite, 8 parts of polyaluminum calcium chloride, 4 parts of sodium hydroxide, glacial acetic acid 4 parts, 3 parts of 3-oxo-1-cyclopentanecarboxylic acid, 1 part of potassium ethoxide, 1 part of pilocar...

Embodiment 2

[0034](1) Discharge industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of the cinder is 2 mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0035] (2) Collect the supernatant after precipitation treatment, and add a composite treatment agent according to the dosage of 25 mg / L wastewater. The composite treatment agent is composed of the following components: 55 parts of modified starch, 50 parts of silicon carbonate, 45 parts of aluminum hydroxide, 40 parts of polyferric sulfate, 35 parts of polysilicon aluminum sulfate, 25 parts of calcite powder, 20 parts of opal powder, 15 parts of sodium hypochlorite, 10 parts of polyaluminum calcium chloride, 5 parts of sodium hydroxide tablet alkali, ice 5 parts of acetic acid, 4 parts of 3-oxo-1-cyclopentanecarboxylic acid, 2 parts of potassium ethylate, 2 parts of p...

Embodiment 3

[0042] (1) Discharge industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of cinder is 2.5mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0043] (2) Collect the supernatant after the precipitation treatment, and add a composite treatment agent according to the dosage of 30mg / L wastewater. The composite treatment agent is composed of the following components: 60 parts of modified starch, 55 parts of silicon carbonate, hydrogen 50 parts of alumina, 45 parts of polyferric sulfate, 40 parts of polysilicon aluminum sulfate, 30 parts of calcite powder, 25 parts of opal powder, 20 parts of sodium hypochlorite, 12 parts of polyaluminum calcium chloride, 6 parts of sodium hydroxide, glacial acetic acid 6 parts, 5 parts of 3-oxo-1-cyclopentanecarboxylic acid, 3 parts of potassium ethoxide, 3 parts of pilocarpine, 25...

technical field

[0001] The invention relates to the technical field of harmless treatment of industrial wastewater, in particular to an advanced treatment process for petrochemical wastewater. Background technique

[0002] The petrochemical industry, referred to as petrochemical industry, refers to the processing industry that uses petroleum and natural gas as raw materials to produce petroleum products and petrochemical products. The petrochemical industry is a basic industry. It provides supporting services and services for agriculture, energy, transportation, machinery, electronics, textiles, light industry, construction, building materials and other industries and people's daily life, and occupies a pivotal position in the national economy. However, petrochemical production will produce a large amount of wastewater at the same time, mainly containing oil, ammonia nitrogen, heavy metals, macromolecular organic matter, and ring-shaped refractory organic matter. For exampl...

Examples

Embodiment 1

[0026] (1) Discharge the industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of the cinder is 1.5mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0027] (2) Collect the supernatant after the precipitation treatment, and add a composite treatment agent according to the dosage of 20mg / L of wastewater. The composite treatment agent is composed of the following components: 50 parts of modified starch, 45 parts of silicon carbonate, hydrogen 40 parts of alumina, 35 parts of polyferric sulfate, 30 parts of polysilicon aluminum sulfate, 20 parts of calcite powder, 15 parts of opal powder, 10 parts of sodium hypochlorite, 8 parts of polyaluminum calcium chloride, 4 parts of sodium hydroxide, glacial acetic acid 4 parts, 3 parts of 3-oxo-1-cyclopentanecarboxylic acid, 1 part of potassium ethoxide, 1 part of pilocar...

Embodiment 2

[0034](1) Discharge industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of the cinder is 2 mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0035] (2) Collect the supernatant after precipitation treatment, and add a composite treatment agent according to the dosage of 25 mg / L wastewater. The composite treatment agent is composed of the following components: 55 parts of modified starch, 50 parts of silicon carbonate, 45 parts of aluminum hydroxide, 40 parts of polyferric sulfate, 35 parts of polysilicon aluminum sulfate, 25 parts of calcite powder, 20 parts of opal powder, 15 parts of sodium hypochlorite, 10 parts of polyaluminum calcium chloride, 5 parts of sodium hydroxide tablet alkali, ice 5 parts of acetic acid, 4 parts of 3-oxo-1-cyclopentanecarboxylic acid, 2 parts of potassium ethylate, 2 parts of p...

Embodiment 3

[0042] (1) Discharge industrial wastewater into the adsorption tank, add an appropriate amount of cinder for adsorption treatment, the particle size of cinder is 2.5mm, then pass the wastewater through the grid to remove solid impurities, and then send it to the sedimentation tank for sedimentation treatment;

[0043] (2) Collect the supernatant after the precipitation treatment, and add a composite treatment agent according to the dosage of 30mg / L wastewater. The composite treatment agent is composed of the following components: 60 parts of modified starch, 55 parts of silicon carbonate, hydrogen 50 parts of alumina, 45 parts of polyferric sulfate, 40 parts of polysilicon aluminum sulfate, 30 parts of calcite powder, 25 parts of opal powder, 20 parts of sodium hypochlorite, 12 parts of polyaluminum calcium chloride, 6 parts of sodium hydroxide, glacial acetic acid 6 parts, 5 parts of 3-oxo-1-cyclopentanecarboxylic acid, 3 parts of potassium ethoxide, 3 parts of pilocarpine, 25...

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