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Separated type solidified bacterium and alga sewage treatment device and method

A sewage treatment device and sewage treatment method technology, applied in water/sewage treatment, biological water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problem of reducing the conductivity of the sphere, lack of nutrients and light, and algal bacteria Mix and match uneven problems to achieve the effect of high removal efficiency and wide application prospects

Active Publication Date: 2018-08-24
CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solidified ball made by mixing algae and nitrifying bacteria is prone to the following problems: ① uneven mixing and matching of algae and bacteria
If the fungus growing outside the algae grows in large quantities, it is easy to reduce the conductivity of the sphere, and the growth of the algae inside the sphere is inhibited due to the lack of necessary nutrients and light, which reduces the removal of pollutants such as nitrogen and phosphorus by the curing ball.

Method used

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  • Separated type solidified bacterium and alga sewage treatment device and method
  • Separated type solidified bacterium and alga sewage treatment device and method
  • Separated type solidified bacterium and alga sewage treatment device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The raw materials and method for preparing the solidified algal balls and the solidified bacterial balls are used to prepare mixed-type solidified algal balls, and an appropriate amount of the solidified algal balls is put into a No. 1 beaker. Then take No. 2 beakers of the same size, put into solidified algae balls and solidified bacteria balls, the algae content and bacteria content in the solidified algae balls and solidified bacteria balls are equivalent to the algae content in the solidified algae balls; No. 1 beaker Add the same amount of pretreated domestic sewage into the No. 2 beaker, place it under an incandescent lamp for treatment, light: dark=12h:12h, the treatment time is two days, and the light intensity is 5000lx.

[0035] After the treatment of Example 1, only in a static state, without the assistance of the pump 2, the separation type solidified bacterium ball and the solidified algae sphere group are better than the mixed type solidified algae bacteriu...

Embodiment 2

[0040] The prepared solidified algae balls and solidified bacteria balls were composed of five different ratios of volume ratios of 1:1, 2:1, 3:1, 1:2, and 1:3 to form a symbiotic system. The total number of balls and cured bacteria balls remains the same, and the symbiotic systems of 5 different combinations of cured algae balls and cured bacteria balls are placed in beakers of the same size, and the same amount of sewage is added (just submerge the cured algae balls and the cured bacteria balls) , placed under an incandescent lamp for treatment, light intensity 5000lx, light: dark=12h:12h, treatment time was two days, measured the concentration of pollutants after treatment, and obtained the ratio of algae and bacteria with the highest pollutant degradation rate, the specific results are shown in the table 2 shows:

[0041] Table 2

[0042]

[0043] It can be seen from Table 2 that the degradation rate of pollutants before and after comprehensive treatment, when the volu...

Embodiment 3

[0045]Fill the solidified algal balls and the solidified bacterial balls into the outer cavity 4 and the central cavity 3 of the tank body 1 respectively, the filling ratio is 80%, and then inject the pretreated domestic sewage from the water inlet 8 on the top of the central cavity 3, Under the action of the pump 2, the sewage circulates in the central chamber 3 and the outer chamber 4, and the tank body 1 is subjected to light treatment under an incandescent lamp (light intensity: 5000 lx; ​​light: darkness = 12h: 12h), and the hydraulic retention time is 2d, and then discharged from the water outlet 9 at the bottom of the tank body 1. The changes in water quality indicators of sewage before and after treatment are shown in Table 3:

[0046] table 3

[0047]

COD

TN

NH4+

TP

before processing

156±16

28±6

23±5

8±2

after treatment

37±8

5±2

3±1

0.7±0.2

Removal rate

76％

82％

87％

91％ ...

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Abstract

The invention discloses a separated type solidified bacterium and alga sewage treatment device and method. The separated type solidified bacterium and alga sewage treatment device comprises a tank body with a side wall which is made of a transparent material, and a water suction pump, wherein a central cavity is formed in the tank body; an outer cavity is formed between a side wall of the centralcavity and a side wall of the tank body; the central cavity is internally filled with solidified bacterium balls and the outer cavity is internally filled with solidified alga balls; water pipes at two ends of the water suction pump are connected with the central cavity and the outer cavity respectively; a water inlet is formed in the top of the tank body and a water outlet is formed in the bottomof the tank body. Sewage is filled into the tank body through the water inlet and the water suction pump is opened to fill the sewage into the central cavity filled with the solidified bacterium balls and the outer cavity filled with the solidified alga balls to circulate and flow; after the swage is treated, the sewage is discharged from the water outlet of the tank body. The device is simple tooperate and the sewage treatment method sufficiently expresses respective functions of an alga and bacterium group; the device and method have the advantages of high purification efficiency, low application cost and wide prospect.

Description

technical field [0001] The invention relates to the field of sewage purification, in particular to a separate solidified algae sewage treatment device and method. Background technique [0002] In recent years, with the acceleration of urbanization, a large amount of urban domestic sewage, especially high-nitrogen wastewater, has brought great challenges to urban water pollution control. [0003] At present, the commonly used domestic sewage treatment method in my country is the activated sludge method, which has a high removal rate for COD, but its removal effect on nitrogen is very limited. However, nitrogen is an essential nutrient for the growth of algae, and nitrogen removal can be achieved by utilizing the massive growth of algae to consume nitrogen. Therefore, it is a very promising new sewage treatment process to remove COD and nitrogen in domestic sewage by co-cultivating algae and activated sludge bacteria to form a symbiotic ecosystem. [0004] Some researches an...

Claims

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Application Information

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IPC IPC(8): C02F3/30C02F3/32C02F3/34C02F1/00
CPCC02F1/001C02F3/301C02F3/302C02F3/322C02F3/34
Inventor 曾磊
Owner CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST
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