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Composite base material for drinking water biological treatment and method for using the same

A composite matrix and quality technology, applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of poor biodegradability, incomplete development and low proportion, etc. Achieve the effect of improving biological stability, good industrial prospects, and promoting removal

Inactive Publication Date: 2005-08-17
NANJING UNIV
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  • Claims
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Problems solved by technology

However, since the drinking water is in an oligotrophic state and its biodegradability is relatively poor, in general, the absolute amount of BOM is not only low, but also its proportion to the total organic matter is not high (generally no more than 30%), so generally speaking, if If the biological treatment process is not combined with other processes, the treatment effect is relatively limited, and the removal rate may be only about 20%, or even lower. Therefore, the current application of biological treatment processes in China is more concerned with its treatment of NH 4 + The effect of -N, its potential in the removal of organic matter, especially trace refractory organic matter has not been fully developed
One of the reasons for the results is that most of the current researchers try to improve the treatment efficiency of the biological treatment process by adjusting the operating parameters of the process and other engineering methods, but ignore the fact that the main body of the biological treatment process is biofilm microorganisms, and have not considered it from the perspective of microbial metabolism. Develop new technologies to improve the efficiency of biological treatment based on the needs of the growth and reproduction of microorganisms

Method used

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  • Composite base material for drinking water biological treatment and method for using the same

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The influent of a biological pretreatment reactor is 50,000m 3 / day, BDOC concentration is 0.5mg / L, BDOC: DOC=0.05, P is the main limiting factor, the amount of organic matter that is expected to be added is 1 / 15 of BDOC (0.5 / 15=0.033mg / L=33μg / L), the dosage of composite matrix is ​​controlled at 300L / d, then the preparation concentration of composite matrix solution can be calculated as follows:

[0034] The total amount of matrix added per day is calculated in C = 50,000m 3 / day×33μg / L=1650g / day.

[0035] Then, 1650g / day=300L / d×composite matrix concentration

[0036] Composite matrix concentration = 1650g / day ÷ 300L / day = 5.5g / L

[0037] According to Table 1, the specific composition of the composite matrix: Glucose-C 0g / L; Acetate-C, 5.5g / L; Phosphate-P, 1.1g / L. According to the treatment effect, the adjustable range is Glucose-C 0 ~1.65g / L; Acetate-C, 4.4~6.6g / L; Phosphate-P, 0.55~1.65g / L.

[0038] Composite matrix is ​​prepared according to the ratio in Table...

Embodiment 2

[0040] A biologically active filter with an inflow flow of 5,000m 3 / day, BDOC concentration is 0.6mg / L, BDOC:DOC=0.15, P is the main limiting factor, the amount of organic matter that is expected to be added is 1 / 15 of BDOC (0.6 / 15=0.04mg / L=40μg / L), the dosage of composite matrix is ​​controlled at 200L / d, then the preparation concentration of composite matrix solution can be calculated as follows:

[0041] The total amount of matrix added per day is calculated in C = 5,000m 3 / day×40μg / L=200g / day.

[0042] Then, 200g / day=200L / d×composite matrix concentration

[0043] Composite matrix concentration = 200g / day ÷ 200L / day = 1g / L

[0044] According to Table 1, the specific composition of the composite matrix: glucose-C, 0.3g / L; acetate-C, 0.7g / L; phosphate-P, 0.2g / L; according to the treatment effect, the range that can be adjusted is glucose- C 0.1~0.5g / L; Acetate-C, 0.5~0.9g / L; Phosphate-P, 0.1~0.3g / L.

[0045] For this bioactive filter, the composite matrix is ​​prepare...

Embodiment 3

[0047] A biological pretreatment reactor feed water flow rate of 400,000m 3 / day, BDOC concentration is 0.75mg / L, P is the main limiting factor, BDOC:DOC=0.25, the amount of organic matter to be added is 1 / 15 of BDOC (0.75 / 15=0.05mg / L=50μg / L), and the dosage of the composite matrix is ​​controlled at 500L / d, then the concentration of the composite matrix solution can be calculated as follows:

[0048] The total amount of matrix added per day is calculated in C = 400,000m 3 / day×50μg / L=20,000g / day.

[0049] Then, 20,000g / day=500L / d×composite matrix concentration

[0050] Composite matrix concentration = 20,000g / day ÷ 500L / day = 40g / L

[0051] According to Table 1, the specific composition of the composite matrix: Glucose-C, 28g / L; Acetate-C, 12g / L; Phosphate-P, 8g / L; according to the treatment effect, the adjustable range is Glucose-C 20~ 36g / L; Acetate-C, 4~20g / L; Phosphate-P, 4~12g / L.

[0052] For this biological pretreatment reactor, the composite matrix is ​​prepared ...

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Abstract

The present invention discloses one kind of composite medium for the biotreatment of drinking water and its usage. The composite medium contains glucose, acetate and phosphate in the mass proportion determined on whether the limiting nutritious elements in the water to be treated are organic matter or phosphate. The usage includes determining whether the limiting nutritious elements in the water to be treated are organic matter or phosphate in the BGP process; determining the DOC and BDOC of the water into the reactor; compounding medium based on the determined results; and throwing the composite medium. The present invention has high organic matter eliminating rate and other advantages.

Description

1. Technical field [0001] The invention relates to a water treatment method and a medicament for water treatment, more specifically a composite substrate for biological treatment of drinking water and its application method. 2. Background technology [0002] In recent years, surface water pollution in our country is common, the organic pollution of rivers flowing through cities is serious, and the problem of eutrophication in lakes is prominent. At least half of the drinking water sources in cities and towns do not meet the water quality standards stipulated by the state. Troubled by the problem of "micro-pollution", these water source waters not only contain natural organic substances such as humus, but may also contain synthetic organic substances such as endocrine disruptors, persistent organic pollutants, and mutagenic substances due to pollution from domestic and industrial wastewater. , their content in the water body is generally at the level of micro or trace (μg / L o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/52C02F1/58
Inventor 于鑫张利民孙成吴海锁齐枝花余萍夏明芳陈振翔周凌云
Owner NANJING UNIV
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