An integrated process system and method for petrochemical industrial wastewater treatment

A technology of industrial wastewater and petrochemical industry, applied in the direction of oxidized water/sewage treatment, chemical industry, natural water treatment, etc., can solve the problems of high concentration of wastewater pollutants, high chroma of wastewater, and difficult degradation of petrochemical wastewater, and achieve process operation Reliable, highly modular, and space-saving processing

Active Publication Date: 2020-05-19
海南博士通环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ①The water quality components are complex and there are many by-products, and the reaction raw materials are mostly solvent substances or ring-structured compounds, etc.;
[0005] ② High concentration of pollutants in wastewater;
[0006] ③There are many toxic and harmful substances, such as halogen compounds, nitro compounds, sulfides, some surfactants or dispersants, etc.;
[0007] ④ Low BOD / COD value and poor biodegradability;
[0008] ⑤ High chroma of wastewater
At home and abroad, we attach great importance to this, and usually use chemical or physical methods to treat it, but not all petrochemical wastewater is difficult to degrade, only a small number of special processes or products produce wastewater that is difficult to treat or biochemically. The physical method has the problem of high operating cost and poor effect

Method used

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  • An integrated process system and method for petrochemical industrial wastewater treatment
  • An integrated process system and method for petrochemical industrial wastewater treatment
  • An integrated process system and method for petrochemical industrial wastewater treatment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] The wastewater quality of Petrochemical A factory is as follows:

[0050] Table 1 Wastewater quality of petrochemical factory A

[0051]

[0052] Table 2 Percentage of petroleum particle size in wastewater

[0053]

[0054] Start the online monitoring and analysis system multi-parameter automatic water quality detection analyzer to monitor and analyze the petrochemical wastewater entering the system and the water quality of each control node, analyze the water quality components of the petrochemical wastewater, and select the wastewater treatment according to the component parameters, PLC programmable logic controller The specific startup module of the system, specifically:

[0055] Monitoring the concentration of petroleum substances in the influent of petrochemical wastewater = 32.6≤50 mg / L, and the wastewater enters the cyclone grit chamber;

[0056] Monitor the wastewater pH=8.8>8.5 in the water quality adjustment tank, and add sulfuric acid to the acid-base adjustment syste...

Embodiment 2

[0062] The wastewater quality of Petrochemical B Plant is shown in Table 3:

[0063] Table 3 Wastewater quality of petrochemical plant B

[0064]

[0065] Table 4 Percentage of petroleum particle size in wastewater

[0066]

[0067] Start the online monitoring and analysis system multi-parameter automatic water quality detection analyzer to monitor and analyze the petrochemical wastewater entering the system and the water quality of each control node, analyze the water quality components of the petrochemical wastewater, and select the wastewater treatment according to the component parameters, PLC programmable logic controller The specific startup module of the system, specifically:

[0068] Monitor the concentration of petroleum substances in the influent of petrochemical wastewater=58.4>50 mg / L, start the degreasing module, and the wastewater enters the grease trap; monitor the proportion of emulsified oil (oil particle size 0.1~10μm) in the effluent from the grease trap 15 %<50%, ...

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Abstract

The invention provides a petroleum chemical industrial wastewater treatment integrated process system and method. The system comprises an on-line monitoring and analyzing system, an intelligent feedback control system and a wastewater treatment system, wherein the on-line monitoring and analyzing system is used for monitoring and analyzing the composition of water quality of petroleum chemical industrial wastewater and the composition of water quality of effluent at all treatment links and transferring monitoring and analyzing data to the intelligent feedback control system; the intelligent feedback control system is used for outputting a control signal to the wastewater treatment system after the monitoring and analyzing data are processed; the wastewater treatment system comprises a pre-treatment module, an oil removal module, a biochemistry module, a sludge treatment module and a depth treatment module; the pre-treatment module, the oil removal module, the biochemistry module, the sludge treatment module and the depth treatment module are used for treating the petroleum chemical industrial wastewater according to an instruction of the control signal output by the intelligent feedback control system. According to the method, treated water with stable and qualified indexes of SS, COD, chromaticity and the like is obtained by seven steps.

Description

Technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and specifically relates to an integrated process system and method for wastewater treatment in the petrochemical industry. Background technique [0002] Petrochemical industry is an industry that processes petroleum and natural gas as raw materials into various chemical products. Petrochemical wastewater is the wastewater discharged from the production process of petrochemical enterprises. The sources of wastewater are distributed in various production facilities, crude oil tank farms, water supply and drainage workshops, etc. Petrochemical wastewater contains a wide variety of substances, complex composition, and high organic content. COD is about 600~1200mg / L and BOD is 200~1000mg / L; due to the variety of catalysts used in the production process, the wastewater contains many heavy metals, and It is very toxic, has the characteristics of inhibiting biodegradation, and has a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14C02F11/121C02F11/123C02F103/36
CPCC02F1/001C02F1/24C02F1/283C02F1/38C02F1/40C02F1/441C02F1/444C02F1/463C02F1/66C02F1/72C02F3/1268C02F3/28C02F9/00C02F11/121C02F11/122C02F2001/007C02F2103/365Y02P20/10
Inventor 于鹏飞李微刘军
Owner 海南博士通环境工程有限公司
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