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Double-effect multifunctional organic sewage treatment agent

An organic sewage, multi-functional technology, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of inability to guarantee the chromaticity, large amount of sludge, low treatment efficiency, etc., and achieve stable chromaticity removal rate and high treatment efficiency. , the effect of small dosage

Inactive Publication Date: 2013-07-31
RED WOOD SCI & TECH
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Problems solved by technology

In the process of single use, they often have the disadvantages of large amount of medicine per ton of water, large amount of sludge generated, low treatment efficiency, high cost of per ton of water treatment chemicals, and failure to ensure that the chromaticity meets the relevant national discharge standards.

Method used

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  • Double-effect multifunctional organic sewage treatment agent

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specific Embodiment approach 1

[0008] Specific implementation mode one: In this implementation mode, taking the secondary sedimentation tank effluent of a bamboo pulp and papermaking middle section wastewater as an example, the polyaluminum chloride in the double-effect multifunctional organic sewage treatment agent and the high-efficiency pulping and papermaking advanced treatment agent are mixed respectively according to 10 % concentration, the organic polymer decolorizing flocculant is prepared according to the concentration of 5%. The controlled dosage is: polyaluminum chloride, high-efficiency pulping and papermaking advanced treatment agent mixed solution 100-150mg / L, organic polymer decolorizing flocculant 10-25mg / L. The CODcr of the treated wastewater is 40-60mg / L, the chroma is 32-40 times, the SS is 12-20mg / L, and the total phosphorus is 0.1-0.5mg / L. In order to meet the national standards for the discharge of pulping wastewater.

[0009] The treatment method in this embodiment is air flotation, ...

specific Embodiment approach 2

[0011] Specific implementation mode two: In this implementation mode, taking the effluent of the secondary sedimentation tank of a certain reed paddle papermaking middle section wastewater as an example, the polyaluminium chloride in the double-effect multifunctional organic sewage treatment agent and the high-efficiency pulping and papermaking advanced treatment agent are mixed respectively according to 15 % concentration, the organic polymer decolorizing flocculant is prepared according to the concentration of 3%. The controlled dosage is: polyaluminum chloride, high-efficiency pulping and papermaking advanced treatment agent mixed solution 150-400mg / L, organic polymer decolorizing flocculant 10-60mg / L. The treated wastewater CODcr is 60-75mg / L, and the chroma is 30-45 times.

[0012] The treatment method in this embodiment is a sedimentation tank, and the pH of the secondary sedimentation effluent is 6.90-8.10.

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Abstract

The invention relates to a double-effect multifunctional organic sewage treatment agent, which is composed of polymeric aluminum, a high efficiency pulping papermaking advanced treatment agent and an organic polymer decolouring flocculating agent. wherein, the high efficiency pulping papermaking advanced treatment agent is a mixture of polymeric ferric sulfate and activated diatomite according to ratio of 4:6, and the organic polymer decolouring flocculating agent is a dicyandiamide-formaldehyde series quaternary amines type cationic polymer. The treatment agent is mainly used in an advanced treatment phase of waste water at intermediate section during a pulping papermaking process, and can improve the disadvantages of large medicinal amount of current single ordinary water, poor treatment effect and high treatment cost. The treatment agent has the advantages of small dosage amount per ton of water, high treatment efficiency and stable chroma clearance. Under the condition that the medicine addition amount accounts for 50% of the that of polymeric aluminum, the index of COD, chroma, SS, total phosphorus and the like of outlet water can reach or is better than national relative standard, and the operation is stable.

Description

1. Technical field [0001] The invention relates to a medicament for advanced treatment of wastewater in the middle stage of pulping and papermaking, especially a medicament with high removal rate for COD, chroma, SS, total phosphorus and the like. 2. Background technology [0002] The pulp and paper industry is an industry that is closely related to the national economy, and it is also an industry that consumes a lot of energy and chemical raw materials, consumes a lot of water, and seriously pollutes the environment. Due to the large amount of wastewater discharged from the papermaking industry, and the wastewater contains a large amount of cellulose, lignin, inorganic alkali, tannin, resin, protein, etc., the wastewater has deep color, high alkalinity, high content of refractory substances, and low oxygen consumption. big. It can cause pollution of the entire water body and serious damage to the ecological environment. The middle section of wastewater is the focus of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 姬广富韩长生刘刚
Owner RED WOOD SCI & TECH
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