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Black and odorous water body restoration agent with compound functions of removing phosphorus and ammonia nitrogen and preparation method thereof

A technology of black and odorous water body and compound functions, which is applied in chemical instruments and methods, water pollutants, and other chemical processes, etc., can solve the problem of high concentration of drugs added in comprehensive sewage treatment, high concentration of residual metal ions of drugs, and reduced efficiency of repeated action of drugs. and other problems, to achieve the effect of long duration, obvious effect and simple preparation process

Pending Publication Date: 2021-10-22
泰州沃源环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Causes problems such as large concentration of dosing in comprehensive sewage treatment, repeated dosing operations, reduced efficiency of repeated action of medicaments, high concentration of residual metal ions in medicaments, and serious secondary pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The mixing ratio of mixed restoration agent precursor (calcium peroxide, bentonite) and foamed concrete is 1:1:2; the consumption of foaming agent during the preparation of foamed concrete is 0.4kg / m 3 ; Naturally evaporated and dried mixed repair agent precursor and foamed concrete mixture are broken into particles with a particle size of 1 cm, and finally a black and odorous water body repair agent is obtained. The average specific surface area (BET) of the black and odorous water restoration agent is 850.5m 2 / g, dry density at 2650kg / m 3 .

[0022] Use this black and odorous water restoration agent to test the removal of phosphorus and ammonia nitrogen. Take 500ml of a solution with an ammonia nitrogen concentration of 20mg / L and a phosphorus concentration of 100mg / L in a 1000mL Erlenmeyer flask, and add 1.00g of black and odorous water restoration agent . Vibrate at a frequency of 200rpm in a shaker for 2 hours, balance and then filter with a 0.45um filter membr...

Embodiment 2

[0024] The mixing ratio of the mixed restoration agent precursor (calcium peroxide, bentonite) is 2:1:3; the consumption of foaming agent in the preparation of foamed concrete is 0.4kg / m 3 ; Naturally evaporated and dried mixed repair agent precursor and foamed concrete mixture are broken into particles with a particle size of 1 cm, and finally a black and odorous water body repair agent is obtained. The average specific surface area (BET) of the black and odorous water restoration agent is 950.2m / g, and the dry density is 2450kg / m 3 .

[0025] Use this black and smelly water restoration agent to test the removal of its phosphorus and ammonia nitrogen. The test method is the same as in Example 1. As a result, the black and odor water restoration agent has an adsorption capacity of 13.2 mg / g to ammonia nitrogen, and an adsorption capacity of 126.8 mg / g to phosphorus. g. Use this black and smelly water restoration agent to test the oxygen-rich situation of water body, the test...

Embodiment 3

[0027] The mixing ratio of the mixed restoration agent precursor (calcium peroxide, bentonite) is 1:2:3; the consumption of foaming agent in the preparation of foamed concrete is 0.4kg / m 3 ; Naturally evaporated and dried mixed repair agent precursor and foamed concrete mixture are broken into particles with a particle size of 1 cm, and finally a black and odorous water body repair agent is obtained. The average specific surface area (BET) of the black and odorous water restoration agent is 930.2m / g, and the dry density is 2797kg / m 3 .

[0028] Use this black and smelly water restoration agent to test the removal of its phosphorus and ammonia nitrogen. The test method is the same as in Example 1. As a result, the black and odor water restoration agent has an adsorption capacity of 19.2 mg / g to ammonia nitrogen, and an adsorption capacity of 73.5 mg / g to phosphorus. g.

[0029] Use this black and odorous water restoration agent to test the oxygen-rich situation of water body,...

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Abstract

The invention discloses a black and odorous water body restoration agent with compound functions of removing phosphorus and ammonia nitrogen and a preparation method of the black and odorous water body restoration agent, and relates to the technical field of black and odorous water body restoration. The method comprises the following steps: taking calcium peroxide and bentonite as adsorbent precursors, foamed concrete as an adhesive; mixing the adsorbent precursors and foamed concrete fully, curing, drying, and crushing to obtain the black and odorous water body restoration agent. According to the black and odorous water body restoration agent, phosphorus and ammonia nitrogen are removed through synchronous adsorption of the calcium peroxide and bentonite composite material, phosphorus and ammonia nitrogen in sewage are effectively removed through the synergistic effect of all the components, and meanwhile oxygen is enriched into a water body through the oxygen slow-release property of the calcium peroxide. The method has the advantages of simple preparation process, low price, rapid remediation effect, long duration and the like, and realizes synchronous improvement of multiple water quality indexes of the black and odorous water body.

Description

technical field [0001] The invention relates to the technical field of black and odorous water body restoration, in particular to a black and odorous water body restoration agent with composite functions of phosphorus removal, ammonia nitrogen, nitrogen enrichment and oxygen enrichment and a preparation method thereof. Background technique [0002] With the continuous development of our country's economy and society, the serial production activities of industry and agriculture have brought surface water pollution problems that cannot be ignored, among which the more serious problem is the eutrophication of water bodies. The 2018 Bulletin on the State of the Ecological Environment in China pointed out: Taking the Three Gorges Reservoir area as an example, among the 77 water quality sections of the 38 main tributaries of the Yangtze River in the Three Gorges Reservoir area, the sections in the eutrophic state accounted for 18.2% of the total number of monitoring sections, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/12B01J20/30C02F1/28C02F1/68C02F101/10C02F101/16
CPCB01J20/12C02F1/281B01J20/04C02F1/68C02F2101/105C02F2101/16
Inventor 徐德荣乔聪蒋霞徐进
Owner 泰州沃源环保科技有限公司
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