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Displacement-fronting advanced oxidation low-sludge sewage treatment method

A sewage treatment method, advanced oxidation technology, applied in water/sludge/sewage treatment, water/sewage multi-stage treatment, chemical instruments and methods, etc., can solve problems such as poor water quality stability, achieve good adsorption, reduce chemical management The workload and the effect of reducing dosing

Inactive Publication Date: 2015-09-30
PUYANG INST OF CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

and the pH due to HCO 3 - The presence of the system decreases significantly as the system reaches the terminal station, resulting in poor water quality stability

Method used

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  • Displacement-fronting advanced oxidation low-sludge sewage treatment method
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  • Displacement-fronting advanced oxidation low-sludge sewage treatment method

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Embodiment Construction

[0042] Below in conjunction with specific embodiment, further illustrate the present invention.

[0043] A displacement advance advanced oxidation low-sludge sewage treatment method is characterized in that it comprises the following steps:

[0044] Step one, mix

[0045] First put the sewage into the oil collection tank, add the displacement conditioner and let it stand for 1-1.5 hours, then prepare the mixed solution A, and measure the HCO of the water species 3 - , oil content, suspended solids content, pH value, the dosing concentration of the displacement conditioning is 80-100mg / l, the displacement conditioning agent is composed of aluminum salt or iron salt, and the aluminum salt or iron salt is selected from compound chlorine Any one of ferric aluminum chloride, composite ferric aluminum sulfate, polyaluminum ferric chloride, polyaluminum ferric sulfate or aluminum sulfate, wherein the dosing concentration of the displacement conditioner in the oil recovery tank is 8...

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Abstract

The invention relates to a displacement-fronting advanced-oxidation low-sludge sewage treatment method which is characterized by comprising the following steps: step 1, mixing; step 2, precipitating; step 3, buffering; step 4, filtering; and step 5: recycling to obtain the final clear liquid. After the obtained clear liquid and stratum water are mixed, the mixture does not scale or becomes turbid; therefore the clear liquid has good compatibility with stratum water; the sludge content is lowered by 51.61% than before.

Description

technical field [0001] The patent of the present invention relates to a method for treating sewage with advanced oxidation and low sludge. Background technique [0002] The produced water of the Puyi Sewage Combined Station of the Second Oil Production Plant of Zhongyuan Oilfield has the characteristics of "four highs and one low", with high salinity, generally at 1.0x10 5 ~2.8x10 5 mg / L: Free CO 2 and HCO 3 - high content of CO 2 The content is generally 100~200mg / L, HCO 3 - The content is 200~400mg / L; the content of multivalent metal ions is high, Ca 2+ , Mg 2+ The total amount is as high as 4000mg / L; ΣFe content is generally 20-80mg / L; SRB content is as high as 10 5 pcs / mL; pH value is low, generally between 5.5 and 6.0, belonging to CaCl 2 Water type (see Table 1 and Table 2 for specific data). The No. 2 Oil Production Plant is a low-permeability oil reservoir, which has high requirements for water injection quality. Puyi Sewage Station currently adopts "pre-o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
Inventor 张付杰孟庆臻靳克林胡立峰张振飞
Owner PUYANG INST OF CHEM
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