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Water body algal bloom treatment system and method

A water body and cylinder technology, applied in water/sewage treatment, chemical instruments and methods, special compound water treatment, etc., can solve the problems of long generation time of microorganisms, complicated operation management, long residence time, etc., and avoid external carbon sources , good treatment effect and small sludge output

Pending Publication Date: 2019-12-10
清上(苏州)环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Autotrophic denitrification uses sulfur, hydrogen, etc. as electron donors. The advantage is that no external carbon source is required. The disadvantage is that the microbial generation time is long, the residence time is long, and the treatment efficiency is low.
Compared with autotrophic bacteria, the treatment capacity of heterotrophic denitrifying bacteria is greatly improved. The disadvantage is that it needs to add additional carbon sources such as acetic acid, ethanol, methanol, etc., and the operation and management are complicated.

Method used

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  • Water body algal bloom treatment system and method
  • Water body algal bloom treatment system and method
  • Water body algal bloom treatment system and method

Examples

Experimental program
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Effect test

Embodiment 1

[0056] The algal density of the sewage to be treated is 3.5×10 7 , the nitrate nitrogen is 5.21mg / L, and the COD is 85mg / L.

[0057] The above-mentioned sewage to be treated is treated by the above-mentioned treatment system, and the treatment method of the present embodiment is:

[0058] (1) Pass the sewage to be treated into the oxidation coagulation reaction tank 1, and oxidize and condense the sewage to be treated by adding chemicals to remove algae; wherein, the added pre-oxidant is potassium permanganate, and the dosage of the pre-oxidant is the pre-oxidant The ratio to algal cells is 0.5×10 3 mg preoxidant: 0.1×10 9 1 algae cell; 10min after adding the preoxidant, add ferrous sulfate aqueous solution, the dosage of ferrous salt is 2 mg ferrous salt: 0.25×10 9 1 algae cell; 3 minutes after adding the aqueous solution of ferrous salt, add an aqueous solution of ferric sulfate, the molar ratio of ferrous salt to ferrous salt is 0.5:1;

[0059] (2) Add a flocculant to t...

Embodiment 2

[0069] Basically the same as Example 1, the difference is: the influent water quality is different, and the algae density of the sewage to be treated is 5.5×10 7 , the nitrate nitrogen is 5.46mg / L, and the COD is 95mg / L.

Embodiment 3

[0071] Basically the same as Example 1, the difference is: the influent water quality is different, and the algae density of the sewage to be treated is 1.9×10 8 , the nitrate nitrogen is 6.21mg / L, and the COD is 107mg / L. The UV dose has been increased to 60mJ / cm 2 , the ultrasonic dose is 70mJ / cm 2 ; The dosage of preoxidant potassium permanganate is 1×10 in the ratio of preoxidant to algal cells 3 mg preoxidant: 0.1×10 9 algae cells; the dosage of ferrous salt is 4 mg ferrous salt: 0.25×10 9 algae cells; the molar ratio of iron salt to ferrous salt is 0.8:1; the feeding amount of polyaluminum chloride is 22 mg / L, and the feeding amount of polyacrylamide is 0.6 mg / L.

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Abstract

The invention provides a water body algal bloom treatment system and method. The water body algal bloom treatment system comprises an oxidation cohesion reaction pool, a composite multi-phase separator, a denitrification reactor, a wall breaking reaction pool, a ceramic film reactor, a sludge concentration pool and a pressure filter, the water outlet of the ceramic film reactor, the water outlet of the sludge concentration pool and the water outlet of the pressure filter are correspondingly connected with the denitrification reactor. According to the water body algal bloom treatment system andmethod, the unity of the long-term control of removing algal cells and the 'algal bloom' can be achieved, the carbon source in the algal cells is fully used for conducting heterotrophic denitrification, the external carbon source is avoided, and compared with the autotrophic denitrification, the efficiency is higher; the water body algal bloom treatment system can be used as an on-site and off-line treatment method, equipment can be easily utilized, and ground-buried design can be conducted; and the treatment effect is good, the sludge yield is small, and the operation cost is low.

Description

technical field [0001] The invention belongs to the technical field of water environment treatment, and in particular relates to a water body algal bloom control system and method. Background technique [0002] Many cities in my country have landscape rivers, lakes and other water bodies, which have become an important foundation for water-friendly landscapes, water-friendly cultures, and livable cities. For a long time, due to the lag in the construction of infrastructure such as source control and interception, internal source treatment, and sponge cities, many urban water bodies have shown eutrophication characteristics, and large-scale "algal blooms" appear in summer and autumn. The treatment of polluted rivers and lakes is of great significance to ensure the health of water ecology and maintain the diversity of water ecology. Specifically, for polluted urban water bodies, it is first necessary to strengthen the removal of algae to quickly improve the sensory effect of ...

Claims

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Application Information

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IPC IPC(8): C02F9/14
CPCC02F9/00C02F2305/06C02F1/72C02F1/76C02F1/78C02F1/56C02F1/5236C02F1/36C02F1/32C02F1/444C02F1/38C02F1/42C02F3/2873C02F3/2846C02F3/284C02F3/28C02F2103/007
Inventor 郭鹏王晶晶
Owner 清上(苏州)环境科技有限公司
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