Mineral complex sewage treating method

A sewage treatment method and composite technology, which are applied in water/sewage multi-stage treatment, adsorbed water/sewage treatment, water/sludge/sewage treatment, etc. Problems such as unfavorable survival and reproduction, slow settling speed, etc., achieve the effect of strong adsorption and flocculation ability, low cost and less sludge

Active Publication Date: 2008-09-03
浙江华特新材料有限公司
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Problems solved by technology

The cetyltrimethylammonium bromide used in this patent has a high price, and the sedimentation speed is slow, and more sludge is deposited. The bromide ion is not good for the survival and reproduction of microorganisms, and has a negative effect on the subsequent biological purification treatment.

Method used

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  • Mineral complex sewage treating method

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Embodiment Construction

[0007] Below in conjunction with embodiment to do further detailed description: following table is the required various minerals, surface active agent, flocculant raw material and the number of kilograms proportioning table when per ton of sewage purification treatment.

[0008]

[0009] Now take the printing and dyeing factory sewage as an example to illustrate its treatment method: first calculate the total amount of sewage with the volume of the sewage tank, and then compare the raw materials and kilograms of the sewage in the embodiment 2 printing and dyeing factory sewage in the table: input calcium base (or Sodium-based or acid) bentonite 0.9kg, attapulgite 0.6kg stirred for 15 minutes, and then input concentration was 0.8kg of octadecyltrimethylammonium chloride of 24%, stirred for 30 minutes, and then input concentration was 1% poly Acrylamide 0.5kg and polyaluminum sulfate 0.3kg, stirred for 15 minutes, settled for 30 minutes, the supernatant liquid was pumped out w...

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Abstract

The invention relates to a mineral composite sewage treatment method. calcium based, sodium based or acidic bentonite is crushed into 101 to 600 mesh, other minerals are crushed into 60 to 600 mesh, the bentonite and other kinds of minerals form a mineral composite, the mineral composite is poured into sewage to be treated, and is blended, then 24% octadecyl trimethyl ammonium chloride is poured into the sewage and stirred, then a flocculating agent is poured into the sewage and stirred for subsiding, and then soil and water separation and micro-organism treatment are performed , and satisfying drainage standard can be reached; the weight ratio of the sewage and the added mineral composite is (1000:0.2)-(1000:2.5), the ratio of the dosage of the bentonite and the dosage of any another mineral is (1:1)-( 4:1), the dosage ratio of the mineral composite and the octadecyl trimethyl ammonium chloride is (2:1)-(17:1), and the dosage ratio of the mineral composite and the flocculating agent is (0.5:1)-(4:1). The method can be used for the treatment of toilets, printing and dyeing, coking, agricultural chemicals and galvanization sewage, and has the advantages of low treatment cost, wide application range and smaller sludge deposit, and has no influence on the subsequent microorganism treatment.

Description

technical field [0001] The present invention relates to a method for treating sewage by using one or several minerals as adsorbent, combined with surfactant and flocculant. Background technique [0002] CN1462726 discloses the patented technology of "organic bentonite synthesis-wastewater treatment integration method" of Zhejiang University, which uses the single mineral of organic bentonite as an adsorbent and cetyltrimethylammonium bromide as a surfactant, and puts it in a certain proportion Purification of sewage. Bentonite is an efficient and cheap adsorbent. In addition, minerals such as diatomite, attapulgite, zeolite, and sepiolite all have certain adsorption properties, and different minerals are selective for the adsorption of organic pollutants. Therefore, In addition to using a single mineral as an adsorbent, a mixture of two or more minerals should also be considered as an adsorbent to expand the comprehensive treatment effect of different organic pollutants. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F1/28C02F1/52
Inventor 王春伟郑素群单小松
Owner 浙江华特新材料有限公司
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