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Sewage treatment flocculating agent and using method thereof

A technology for sewage treatment and flocculant, which is applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of complicated synthesis and preparation procedures, unsatisfactory treatment effect, large amount of sludge, etc., and achieves simple preparation process and great popularization and application value. , The effect of producing less sludge

Active Publication Date: 2010-05-12
SHENZHEN HONGKONG INSTITUTION OF IND EDUCATION & RES ENVIRONMENTAL ENG TECH CO LTD
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Problems solved by technology

However, the current composite flocculants generally have problems such as complex synthesis and preparation procedures, high cost, large amount of sludge, and unsatisfactory treatment effects, and the flocculant products for high-concentration refractory organic wastewater have not been well developed in the prior art. good solution

Method used

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  • Sewage treatment flocculating agent and using method thereof
  • Sewage treatment flocculating agent and using method thereof
  • Sewage treatment flocculating agent and using method thereof

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Embodiment Construction

[0023] The present invention provides a sewage treatment flocculant. In order to make the purpose, technical solution and advantages of the present invention clearer and clearer, the present invention will be further described in detail with reference to the examples below.

[0024] The basic principle of the sewage treatment flocculant provided by the embodiment of the present invention is: in the high-concentration refractory organic wastewater, the concentration of COD is high, and the components of metal ions such as Cu and Fe are complex, and the alkali solution with a pH range of 8-9 is added [ Oh - ], the [Fe in wastewater 3+ ] and other metal ions and [OH - ] combined to produce a large amount of [Fe 2 (OH) 4 〕 2+ , [Fe 3 (OH) 6 〕 3+ , [Fe 8 (OH) 20 〕 4+ The multinuclear complex iron ions formed with hydroxyl bridges can electrically neutralize the colloidal particles suspended in water, lower the potential, and promote the flocculation and precipitation of i...

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Abstract

The invention discloses a sewage treatment flocculating agent and a using method thereof. The flocculating agent comprises the following components in part by weight: 690 to 700 parts of alkali solution of which pH range is 8 to 9, 25 to 40 parts of aluminium polychloride, 10 to 15 parts of sodium silicate and 1 part of polyacrylamide. In the sewage treatment flocculating agent and the using method thereof provided by the invention, because the alkali solution of a novel formulation is adopted, the agent cost is reduced, the treatment effect is improved, the preparation process is simple, the raw material source is convenient, the wastewater treatment efficiency is high, the effect of purifying the water is good, the flocculating speed is high, the produced sludge is little, and the flocculating agent and the using method are particularly suitable for treating the mixed discharged sewage in the industries of printing and dyeing, food and the like and have great popularization and application values in the aspects of purification and treatment of printing and dyeing wastewater and other industrial wastewater.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a composite flocculant for treating high-concentration refractory organic wastewater and a method for using the same. Background technique [0002] Flocculants are mainly used in the field of sewage treatment, which can reduce the sensory indicators such as turbidity and color of raw water. The removal of a variety of high molecular organics, some heavy metals and radioactive substances by flocculants can be used as an independent treatment system, or combined with other treatment unit processes, as pretreatment, intermediate treatment and final treatment, and can also be used for The thickening process before sludge dewatering improves the dewatering performance of sludge. [0003] In recent years, the development of composite flocculants has become a hot spot. The composite flocculant can overcome many shortcomings of using a single flocculant, and has a wide range of applicat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/56
Inventor 杨小毛王波王佳宁萨如拉张晓文
Owner SHENZHEN HONGKONG INSTITUTION OF IND EDUCATION & RES ENVIRONMENTAL ENG TECH CO LTD
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