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Bio-degradable sustained-release carbon material and preparation method thereof

A technology of biodegradation and carbon materials, which is applied in the field of slow-release carbon source materials and its preparation, can solve the problems of denitrification efficiency decline, microbial metabolic function decline, and treatment efficiency decline, so as to overcome the decline of microbial metabolic function and slow-release stability Long-lasting, low-cost results

Inactive Publication Date: 2016-05-25
卓勒(上海)环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] In view of the problems existing in the existing technology, it overcomes the problem of the decline of microbial metabolic function caused by the uneven nutrient supply of organic matter in the current water treatment field, which leads to the decline of its treatment efficiency, and is especially suitable for the denitrification efficiency caused by insufficient carbon source supply in domestic sewage treatment. The object of the present invention is to provide a method for preparing a solid carbon source with long-lasting and stable slow-release performance for denitrification and denitrification of wastewater

Method used

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  • Bio-degradable sustained-release carbon material and preparation method thereof
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  • Bio-degradable sustained-release carbon material and preparation method thereof

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specific Embodiment

[0030] The present invention will be further described in detail in conjunction with the following specific embodiments and accompanying drawings. The process, conditions, experimental methods, etc. for implementing the present invention, except for the content specifically mentioned below, are common knowledge and common knowledge in this field, and the present invention has no special limitation content.

[0031]In the process of the invention, slow-release carbon materials with different material ratios are prepared, and static carbon release performance tests and denitrification performance tests are performed on them.

[0032] 1. Static carbon release performance test

[0033] The specific implementation is as follows:

Embodiment 1

[0035] Prepare the slow-release carbon material according to the following method:

[0036] (1) First pour 100mL of distilled water into a heatable container.

[0037] (2) Weigh 1gD (corn starch) and 1gQ (agar powder), place them in the above-mentioned container, stir evenly to form a suspension.

[0038] (3) Heat and boil the suspension above, and keep boiling for 5 minutes after boiling. Stir at a constant speed with a glass rod during the heating process; the total heating time is 20 minutes.

[0039] (4) After stopping the heating, pour the sol-like semi-finished product into a clean and dry container while it is hot, and condense it.

[0040] (5) After the semi-finished product is solidified, the gel-like finished product can be cut into a volume of 10cm 2 The small cube blocks are spare.

[0041] Put the prepared slow-release carbon material into a 250mL Erlenmeyer flask, add distilled water to the 250mL mark, seal it, and change the water every 5 days. Samples were...

Embodiment 2

[0045] Prepare the slow-release carbon material according to the following method:

[0046] (1) First pour 100mL of distilled water into a heatable container.

[0047] (2) Weigh 10g of D (wheat starch) and 5g of Q (agar powder), place them in the above-mentioned container, and stir to form a suspension evenly.

[0048] (3) Heat the above suspension to boiling, and keep boiling for 5 minutes after boiling. Stir at a constant speed with a glass rod during the heating process; the total heating time is 20 minutes.

[0049] (4) After stopping the heating, pour the sol-like semi-finished product into a clean and dry container while it is hot, and condense it.

[0050] (5) After the semi-finished product is solidified, the gel-like finished product can be cut into small cubes for later use.

[0051] Put the prepared slow-release carbon material into a 250mL Erlenmeyer flask, add distilled water to the 250mL mark, seal it, and change the water every 5 days. Samples were taken to ...

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Abstract

The invention discloses a solid carbon source having durable and stable sustained-release performance and a preparation method thereof. The method comprises the following steps: preparing an aqueous turbid liquid from a certain mass of starch-type powder and agar powder; heating, boiling, modeling and cooling to prepare a gel-shape solid sustained-release carbon material. The carbon material is a high-strength gel carbon source, has excellent strength, elasticity, transparency, permeability and reversibility, can be used for adjusting the carbon release amount at different levels, and has relatively high application effect and value. The sustained-release carbon material is simple in process, is prepared from low-price and easily-available raw materials, does not need to be added with other auxiliary materials, is low in cost, does not have secondary pollution, and is suitable for long-term application in water treatment. According to the carbon material, microorganisms have strong adaptability to the carbon source in the denitrification process, hardly have delay, and have good biodegradability. The method also can be used for sustainably releasing pesticide, fertilizer and the like.

Description

technical field [0001] The invention relates to the field of water treatment, in particular to a biodegradable slow-release carbon source material and a preparation method thereof. Background technique [0002] At present, in industrially developed countries and developing countries, nitrate pollution has rapidly developed into an important environmental problem. A large amount of foreign data shows that fertilization has caused serious pollution. The leaching loss of nitrate and the surface runoff of nitrogen are an important reason for the pollution of groundwater and surface water. Since nitrate can cause infant methemoglobinemia, it can also form highly carcinogenic nitrosamines or nitrosamides (USEPA. Nitrate and pesticides in shallow ground water inagricultural areas, EPA's report on the environment (ROE) [R]. USEPA, 1995), so the World Health Organization (WHO) It is stipulated that the content of NO3-N in drinking water should be less than 10mg / L (Xie Xi, He Shengbi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28
CPCC02F3/28C02F2003/003C02F2305/06
Inventor 李秀艳崔贺郭家荣马修·艾米特·拜尔斯
Owner 卓勒(上海)环境工程有限公司
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