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A method for anaerobic biodegradation synergistic gradient coagulation and adsorption treatment of artificial stone wastewater

A technology of anaerobic organisms and artificial stone, applied in anaerobic digestion treatment, multi-stage water treatment, water/sewage treatment, etc., can solve the problems of not considering the removal of organic matter, incomplete treatment, etc., and achieve good treatment effect and simple process Effect

Active Publication Date: 2021-04-13
GUILIN UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0004] At present, the main treatment method of artificial stone processing wastewater is to remove part of SS by simple coagulation sedimentation method, without considering the removal of organic matter (COD), and the treatment is not thorough

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  • A method for anaerobic biodegradation synergistic gradient coagulation and adsorption treatment of artificial stone wastewater

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Embodiment Construction

[0017] The technical solution of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0018] Example:

[0019] Main instruments and equipment:

[0020] The EGSB reactor is customized, using ECH-Ⅱ microwave heater, using potassium dichromate microwave rapid digestion method to measure COD; -7 pH meter to measure the pH value.

[0021] refer to figure 1 , the steps of the present invention are specifically:

[0022] The experimental waste water in the embodiment is taken from the raw water produced by a stone industry company in Guangxi; the concentration of pollutants in the tested waste water is about COD2846mg / L, BOD 5 1174 mg / L, SS1986 mg / L, turbidity 1145NTU.

[0023] The aluminum sulfate coagulant was prepared into a 10g / L solution, the polyacrylamide coagulant was prepared into a 1g / L solution, and the diatomite adsorbent was ground through a 200-mesh sieve.

[0024] (1) First-level...

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Abstract

The invention discloses a method for anaerobic biodegradation synergistic gradient coagulation and adsorption treatment of artificial stone wastewater. Firstly, it is treated with coagulation and sedimentation facilities, and then enters an anaerobic reactor to perform anaerobic biological treatment on artificial stone wastewater to remove part of organic pollution. material; optimize coagulation and sedimentation technical parameters, connect multi-stage coagulation and sedimentation facilities for treatment, and follow-up adsorption. In the EGSB reactor, domesticated beer wastewater anaerobic sludge is used to treat the effluent after adsorption, and the artificial stone processing wastewater is thoroughly treated. After three-stage coagulation, adsorption and biological treatment, the SS of the wastewater supernatant was 4.52mg / L, the turbidity was 5.9NTU, and the COD was 26.18mg / L; the removal rate of SS reached 99.77%, and the removal rate of turbidity reached 99.49% %, the COD removal rate is 99.08%; the effluent COD reaches the comprehensive sewage discharge standard. The technical scheme of the invention has the advantages of simple process, good treatment effect and the like, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment and relates to a method for anaerobic biodegradation coordinated gradient coagulation and adsorption treatment of artificial stone wastewater. Background technique [0002] Artificial stone processing wastewater is different from natural stone processing wastewater. It not only has the characteristics of high SS, but also has a relatively high content of organic matter COD. [0003] The sources of pollutants in artificial stone processing wastewater are mainly the stone powder produced by cutting and edging of stone slabs and the residues of auxiliary raw materials such as coolant, resin glue and curing agent used in processing. Stone powder is suspended and colloidal in water, with a high degree of dispersion; the residues of auxiliary raw materials such as coolant, resin glue and curing agent used in stone processing are mainly composed of resin acids and their saponified...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14
CPCC02F1/281C02F1/38C02F1/5236C02F1/66C02F3/28C02F9/00C02F2301/08
Inventor 张萍蔡健霞解庆林陈南春朱宗强唐沈赵文玉
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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