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Composite medicinal preparation for biochemical effluent deep treatment of sewage plant

A composite agent and biochemical water effluent technology, which is applied in water/sewage treatment, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems that the ingredients cannot work together quickly and effectively, and the treatment effect of the agent is limited. Achieve remarkable sweeping effect, improve the effect of flocculation and sedimentation, and improve the effect of adsorption performance

Active Publication Date: 2012-09-19
ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The purifying agent is only made by simple physical blending method. Due to the difference in the interaction rate between different components and the pollutants in the sewage, after being added to the sewage, the components cannot be quickly and effectively in a short period of time. Working together, the treatment effect of its agents is limited

Method used

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  • Composite medicinal preparation for biochemical effluent deep treatment of sewage plant
  • Composite medicinal preparation for biochemical effluent deep treatment of sewage plant
  • Composite medicinal preparation for biochemical effluent deep treatment of sewage plant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] The preparation of a compound agent suitable for the advanced treatment of biochemical effluent from sewage plants comprises the following preparation steps:

[0053] (1) Weigh 500g of attapulgite, then add 500g of 6mol / L hydrochloric acid solution, fully soak the attapulgite and seal it for 24 hours, then wash it with water several times until the pH of the washing liquid is close to 7, then dry it at 105°C, bake After drying, cool and grind to a fineness of 100 mesh to obtain hydrochloric acid modified attapulgite powder.

[0054] (2) Weigh 150g Na 2 SiO 3 9H 2 O, dissolved in 150g of water to obtain a 50% mass fraction sodium silicate solution, take 200g of a 15% hydrochloric acid solution (containing 30g of HCl). Take 200 g of the above 50% sodium silicate solution and put it in a container, slowly add 15% hydrochloric acid solution while stirring, wait until it is evenly mixed, let stand and mature for 24 hours to obtain sodium silicate hydrochloride solution. ...

Embodiment 2

[0061] A method for preparing a functional compound agent for advanced treatment in sewage plants, comprising the following preparation steps:

[0062] (1) Weigh 500g of magnesium aluminum silicate mineral attapulgite, then add 750g of an appropriate amount of 3mol / L sulfuric acid solution, fully soak the attapulgite and seal it for 24 hours, then wash it with water several times until the pH of the washing solution is close to 7, then Dried at 105°C, cooled after drying, and ground to a fineness of 100 mesh to obtain hydrochloric acid modified attapulgite powder.

[0063] (2) Weigh 150g of sodium silicate, dissolve it in 150g of water to obtain a 50% sodium silicate solution, and take 200g of a 10% hydrochloric acid solution (containing 20g of HCl). Take 200g of 50% sodium silicate solution and put it in a container, slowly add 10% sulfuric acid solution while stirring, wait until it is evenly mixed and leave it to mature for 24 hours to obtain sodium silicate hydrochloride s...

Embodiment 3

[0070] The preparation of a compound agent suitable for the advanced treatment of biochemical effluent from sewage plants comprises the following preparation steps:

[0071](1) Weigh 400g of attapulgite, then add 250g of 6mol / L hydrochloric acid solution, fully soak the attapulgite and seal it for 24 hours, then wash it with water several times until the pH of the washing solution is close to 7, then dry it at 105°C, bake After drying, cool and grind to a fineness of 100 mesh to obtain hydrochloric acid modified attapulgite powder.

[0072] (2) Weigh 165g Na 2 SiO 3 9H 2 O, dissolved in 135g of water to obtain a 55% mass fraction sodium silicate solution, take 250g of a 10% hydrochloric acid solution (containing 25g of HCl). Take 200 g of the above 50% sodium silicate solution and put it in a container, slowly add 10% hydrochloric acid solution while stirring, wait until it is evenly mixed and leave it to mature for 24 hours to obtain sodium silicate hydrochloride solution....

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Abstract

The invention discloses a composite medicinal preparation for biochemical effluent deep treatment of a sewage plant, and belongs to the technical field of sewage treatment. The composite medicinal preparation comprises the following raw materials in parts by weight: 500 parts of modified attapulgite, 25 to 55 parts of inorganic strong base, 300 to 550 parts of inorganic aluminum salt, 100 to 200 parts of inorganic ferric salt, and 400 to 650 parts of inorganic strong acid sodium silicate solution. The preparation method comprises the following steps: copolymerizing the modified attapulgite, the inorganic ferric salt and the inorganic aluminum salt; further performing secondary polymerization with the inorganic strong acid sodium silicate; regulating the basicity of the reaction mixture after secondary polymerization to 60-85 percent by using the inorganic strong base; and drying and grinding. The composite medicinal preparation is mainly suitable for biochemical effluent deep treatment of the sewage plant, has the functions of COD (chemical oxygen demand) enhanced removal, adsorption bleaching, auxiliary phosphor removal and the like and has good treatment effect; moreover, the preparation method is simple and easy to operate.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a compound agent suitable for advanced treatment of biochemical effluent from sewage plants and its preparation. Background technique [0002] With the further improvement of pollution reduction requirements in the national "Twelfth Five-Year Plan", many sewage treatment plants across the country are facing the urgent task of upgrading and upgrading. At present, most of the influent water of urban sewage treatment plants contains industrial wastewater, and there are many refractory biodegradable substances. Most of the COD in the biochemical effluent is formed by refractory biodegradable substances. It is very difficult to further reduce the COD emission value. [0003] The method of coagulation and sedimentation by dosing chemicals has been proved to be one of the effective methods for removing refractory organic matter in biochemical effluent. At present, commonly use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/28C02F1/58
Inventor 李欲如王付超蒋涛张刚沈浙萍梅荣武
Owner ENVIRONMENTAL SCI RES & DESIGN INST OF ZHEJIANG PROVINCE
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