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Purification scheme of discharged sewage from paper mill

A technology for paper mills and sewage, applied in chemical instruments and methods, biological water/sewage treatment, neutralized water/sewage treatment, etc., to achieve low cost of sewage treatment, significant effect, and strong acid removal effect

Inactive Publication Date: 2019-01-04
JIANGSU NENGZHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is aimed at the above-mentioned environmental pollution problems of sewage discharged by paper mills. The present invention provides an environmentally friendly, green, and low-cost sewage treatment method, which is to fully purify the sewage discharged by paper mills to meet the requirements of a harmonious ecological environment.

Method used

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Embodiment Construction

[0018] In order to make the technical solutions of the present invention clearer and clearer to those skilled in the art, the present invention will be further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0019] A purification scheme for sewage discharged from a paper mill provided in this embodiment comprises the following steps:

[0020] (1) Sewage pool: collect the sewage and discharge it into the sewage treatment pool for centralized storage;

[0021] (2) Suspended solids treatment: Add alkaline substances into the sewage treatment tank and let it stand for no less than 3 hours. The alkaline substance is anhydrous calcium carbonate;

[0022] (3) Adding chemical substances to react and decompose: add sewage treatment agent in the sewage treatment tank, the sewage treatment agent is a mixture of polyvinyl alcohol, activated carbon and chitosan, in the mixture, polyvinyl alcohol, activated carb...

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Abstract

The invention discloses a purification scheme of discharged sewage from paper mills and belongs to the technical field of sewage purification. The purification scheme of the discharged sewage from paper mills includes the following steps of: (1) storing sewage in a pool; (2) treating suspended matters; (3) adding chemicals for reaction and decomposition; (4) degrading microorganism; (5) adjustingpH; (6) conducting sterilization and disinfection with chlorine; (7) filtering; (8) discharging after reaching the standard. The purification scheme of the discharged sewage from paper mills has the advantages of being environmentally-friendly, green, low in cost, and capable of allowing the discharged sewage from paper mills to be fully purified and meet the requirements of a harmonious ecological environment.

Description

technical field [0001] The invention relates to a purification scheme for sewage, in particular to a purification scheme for sewage discharged from a paper mill, and belongs to the technical field of sewage purification. Background technique [0002] In recent years, the problem of environmental pollution has attracted widespread attention, and the problem of sewage has received increasing attention from the society. With the expansion of the paper industry, the amount of wastewater discharged from paper mills continues to increase. The discharged wastewater is highly acidic and seriously pollutes the environment. If it is discharged into rivers without adequate treatment, it will easily cause a sharp increase in eutrophication and acidification of the river. It stinks, fish and shrimp cannot survive normally, and even the river water is not suitable for irrigating farmland and rice fields. [0003] How to fully purify the sewage discharged by paper mills to meet the ecolog...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F103/28
CPCC02F9/00C02F1/001C02F1/40C02F1/50C02F1/66C02F3/34C02F7/00C02F2103/28
Inventor 田勇
Owner JIANGSU NENGZHENG ENVIRONMENTAL PROTECTION TECH CO LTD
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