Treatment agent specially used for treating domestic waste leachate

A domestic garbage and treatment agent technology, applied in the direction of flocculation/sedimentation water/sewage treatment, sterilization/microdynamic water/sewage treatment, etc., can solve the problem that the water quality is difficult to meet the national secondary discharge standard, and cannot provide convenience for subsequent treatment sections. CODcr low efficiency and other problems, to achieve the effect of good shear resistance of flocs, simple structure, and improved flocculation efficiency

Inactive Publication Date: 2013-07-17
马志文 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional physical and chemical treatments do not have pre-adjusted causticization tanks, and the application effect of common cationic decolorizers after being put in the aeration tank treatment section is not ideal. The disadvantages are: flocculation, decolorization, The efficiency of removing CODcr is relatively low
Cannot provide convenience for the follow-up treatment section of the sedimentation tank, making it difficult for the water quality after subsequent upgrading and treatment to meet the national secondary discharge standard

Method used

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  • Treatment agent specially used for treating domestic waste leachate
  • Treatment agent specially used for treating domestic waste leachate
  • Treatment agent specially used for treating domestic waste leachate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] 1. The raw materials of each component are:

[0047] Polyaluminum ferric chloride (PAFC) 72kg;

[0048] Polydimethyldiallylammonium chloride (PDMDAAC) 28kg;

[0049] Tap water 88kg.

[0050] 2. Its preparation method is:

[0051] (1) Put polyaluminum ferric chloride (PAFC) dry powder with a mass fraction of 30.5% in a mixing kettle, add water to prepare the PAFC content in AL 2 o 3 The mass fraction is 8%-10%; the solution is 1%-2% iron oxide mass fraction.

[0052] (2) Stir the PAFC solution at room temperature -4°C-36°C, add a colloid with a characteristic viscosity of 1.0-4.7dL / g and a solid content of 20%-75% by mass fraction or (92±2)% Dry powder polydimethyldiallylammonium chloride (PDMDAAC). Make the mixed solution with AL 2 o 3 The calculated mass ratio of PAFC to PDMDAAC is 20.5:1-2.5:1.

[0053] (3) Stir the mixed solution at normal temperature until the PDMDAAC colloid or dry powder is completely dissolved to obtain a stable polyaluminum ferric chlor...

Embodiment 2

[0062] 1. The raw materials of each component are:

[0063] Polyaluminum ferric chloride (PAFC) 72kg;

[0064] Polydimethyldiallylammonium chloride (PDMDAAC) 28kg;

[0065] Polyquaternium 5kg;

[0066] Tap water 88kg.

[0067] The treatment agent 2 made from raw materials according to the above weight percentage is specially placed in the causticization tank to decolorize, flocculate and sterilize the causticized liquid.

[0068] 2. Its preparation method is:

[0069] (1) Put polyaluminum ferric chloride (PAFC) dry powder with a mass fraction of 30.5% in a mixing kettle, add water to prepare the PAFC content in AL 2 o 3 The mass fraction is 8%-10%; the solution is 1%-2% iron oxide mass fraction.

[0070] (2) Stir the PAFC solution at room temperature -4°C-36°C, add a colloid with a characteristic viscosity of 1.0-4.7dL / g and a solid content of 20%-75% by mass fraction or (92±2)% Dry powder polydimethyldiallylammonium chloride (PDMDAAC). Make the mixed solution with AL ...

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Abstract

The invention discloses a treatment agent specially used for treating domestic waste leachate. The treatment agent is a chemical treatment agent. The invention aims at providing the treatment agent specially used for treating domestic waste leachate. The invention adopts a technical scheme 1 comprising the key points that: the agent is a product compounded by using main materials of polyaluminum ferric chloride (PAFC) and poly dimethyl diallyl ammonium chloride (PDMDAAC), and an auxiliary material of tap water. The agent is specially placed in an aeration tank, and is used for carrying out decolorization, flocculation and disinfection upon causticized liquid, such that subsequent treatment sections such as deposition are facilitated, and water quality after reverse osmosis membrane treatment can reach national first or second grade discharge standard. When polyquaternium salt is added into the raw materials in the technical scheme 1, a technical scheme 2 is formed. When the product is added into a causticization tank and is used in disinfection, decolorization, and flocculation upon raw leachate liquid, substantial effect is provided. The two products are used in cooperation, and cannot be used for replacing each other. The treatment agent provided by the invention has a simple structure.

Description

【Technical field】 [0001] The present invention relates to a chemical treatment agent. In particular, it relates to a decolorizing agent for treating landfill leachate in an aeration tank. 【Background technique】 [0002] At present, the treatment of landfill leachate is still a difficult problem in sewage treatment. It has large chroma and strong toxicity. It not only contains a large amount of organic pollutants, but also contains various heavy metal pollutants. It is a kind of organic wastewater with complex components, high concentration and refractory degradation. Its CODcr generally reaches 10000-30000ppm; BOD 5 Up to 4000-15000. Conventional physical and chemical treatment and biological treatment generally use common cationic decolorizers in aeration tanks and sedimentation tanks. The first treatment section of the aeration tank should provide convenience for the subsequent treatment section of the sedimentation tank, and at the same time lay the foundation for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/56C02F1/50
Inventor 马志文王庚平
Owner 马志文
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