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Nitrogen and phosphorus removal composite agent and preparation method thereof

A comprehensive agent, denitrification technology, applied in chemical instruments and methods, water/sludge/sewage treatment, water pollutants, etc. High cost and other problems, to achieve the effect of superior effect, simple preparation and low dosage

Inactive Publication Date: 2017-06-13
南京亿葆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

However, these treatment methods have problems such as large investment costs, high operating costs, complex treatment processes, low denitrification efficiency, and cannot meet the stricter requirements for ammonia nitrogen, total nitrogen and total phosphorus indicators.

Method used

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  • Nitrogen and phosphorus removal composite agent and preparation method thereof
  • Nitrogen and phosphorus removal composite agent and preparation method thereof
  • Nitrogen and phosphorus removal composite agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A comprehensive agent for phosphorus and nitrogen removal, formulated according to the following mass percentages:

[0041] 20kg of metal compounds, including 6kg of aluminum sulfate, 10kg of ferrous sulfate, and 4kg of lanthanum oxide;

[0042] 10kg of natural mineral powder, including 5kg of bentonite, 3kg of attapulgite, and 2kg of diatomite;

[0043] 10kg of flocculant, including 6kg of polyferrosilicate flocculant and 4kg of polyacrylamide;

[0044] Coagulant aid 5kg, including calcium oxide 2kg, calcium hydroxide 3kg;

[0045] Strong oxidizing agent 10kg, bromochlorohydantoin 7kg, potassium hypochlorite 3kg.

[0046] as per figure 1 The process shown in the preparation of comprehensive phosphorus and nitrogen removal agent, the specific steps are:

[0047] a. Prepare the raw materials of each component of the phosphorus and nitrogen removal comprehensive agent according to the above-mentioned mass percentage;

[0048] b. Spray the liquid raw material on the sol...

Embodiment 2～ Embodiment 5

[0053] The difference between Example 2-Example 5 and Example 1 is that the distribution ratio of each component is different, see Table 1 for details.

[0054] The composition distribution ratio of table 1 embodiment 2~embodiment 5

[0055]

[0056]

[0057] Taking the production sewage of China Salt Anhui Hongsifang Co., Ltd. as a sample, the nitrogen and phosphorus removal agent produced by Foshan Demiao Environmental Protection Technology Co., Ltd. with the model DM was selected as a representative of ordinary phosphorus and nitrogen removal agents to discuss the comprehensive process of phosphorus and nitrogen removal. The phosphorus removal effect of the agent.

[0058] Take 3000mL of sewage water samples, test the phosphorus content and ammonia nitrogen content of sewage, and test the phosphorus and ammonia nitrogen removal. Determination of phosphorus - ammonium molybdate spectrophotometry, ammonia nitrogen cooking titration as standard. The total phosphorus co...

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PUM

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Abstract

The invention provides a nitrogen and phosphorus removal composite agent, relating to the technical field of sewage treatment. The nitrogen and phosphorus removal composite agent comprises the following components by weight percent: 20-60% of metal compounds, 10-15% of natural mineral powder, 10-15% of a flocculant, 5-10% of a coagulant aid and 10-15% of a strong oxidizer. According to the scheme, by providing the nitrogen and phosphorus removal composite agent and by virtue of a physical chemical combined method, cooperative interaction of all the components is utilized, can phosphorus in inorganic and organic phosphorus-containing wastewater can be effectively removed, and nitrogen can be removed; and the nitrogen and phosphorus removal composite agent has the advantages of simple preparation, convenience in application, low cost, low dosage, rapid reaction, excellent nitrogen and phosphorus removal effect, wide application range and the like.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a comprehensive agent for phosphorus and nitrogen removal and a preparation method thereof. Background technique [0002] Since the industrial revolution, the development and utilization of minerals has aggravated environmental pollution, and the increase and accumulation of nitrogen and phosphorus discharged from industrial and agricultural production have resulted in eutrophication of water bodies, which will cause explosive reproduction of algae and other plankton, causing massive deaths of fish and other organisms . Contaminated drinking water will pose a great threat to human health, and even cause cancer. In recent years, many lakes, reservoirs and rivers in my country have been frequently polluted, including large-scale outbreaks of blue-green algae, frequent occurrences of red tides in offshore waters, and the emergence of Enteromorpha in coastal cities. The occ...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F1/52C02F1/56C02F1/76C02F101/16C02F101/30
CPCC02F1/281C02F1/5245C02F1/56C02F1/76C02F1/766C02F2101/105C02F2101/16C02F2101/30
Inventor 冯志祥
Owner 南京亿葆源环保科技有限公司
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