Purification method of polluted lake water body

A water purification and lake technology, applied in chemical instruments and methods, biochemical equipment and methods, biological water/sewage treatment, etc., can solve the problems of high cost, high construction cost, COD reduction, etc. Effect

Active Publication Date: 2009-12-23
DONGGUAN SHENGYUAN ENVIRONMENTAL PROTECTION TECH
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Problems solved by technology

[0005] 2. Dredging is used to control sediment pollution, but the cost is high and secondary pollution is formed;
[0006] 3. Pure oxygen aeration is mainly used to reduce sulfide and COD (chemical oxygen demand), which can moderately improve water quality, but it is costly and consumes a lot of energy;
[0007] 4. Constructed wetlands occupy a large area and are expensive

Method used

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  • Purification method of polluted lake water body
  • Purification method of polluted lake water body
  • Purification method of polluted lake water body

Examples

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Effect test

Embodiment 1

[0033] Embodiment 1: the processing of landscape lake

[0034] Landscape lake with a total water volume of 4300m 3 , the lake water was yellowish-brown before the treatment, the lake water transparency was low, and had peculiar smell, and some indicators met the V-class standard for surface water inferiority.

[0035] According to the water quality and water volume characteristics of the lake, after investigation and analysis, the lake water is treated by the polluted lake water purification method of the present invention. A large amount of high-concentration composite bacterial agents are added. The weight ratio of the composite bacterial agents is: 45-50 Bacillus subtilis, 35-40 nitrifying bacteria, 15-20 lactic acid bacteria, 18-20 yeasts, and The delivery ratio is 100ppm.

[0036] The dosage is 100ml / m 3 h 2 O calculation, the amount of composite bacteria is 0.1 × 4300 = 430L. During the 15-day treatment process, the compound bacterial agent was repeatedly added twic...

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Abstract

The invention provides a purification method of a polluted lake water body, comprising the following steps: (1) detecting pollution indexes of a lake; (2) blending the varieties and the numbers of microbial agents; (3) throwing the obtained composite microbial agents into a water body according to 100ppm; (4) transferring, translating and degrading pollutants in the lake by the composite microbial agents; (5) detecting the pollution indexes of the lake; and (51) repeating the steps from (2) to (5) until the lake conforms to requirements. Each composite microbial agent comprises the components by weight percent: 30 to 50 bacillus subtilis, 30 to 40 nitrifying bacteria, 10 to 20 lactobacillus and 10 to 20 microzyme. The purification method of a polluted lake water body preliminarily reduces and enables the pollutants of the lake water body to be inorganic, achieves the effect of preliminary process of the lake and has simple operation and low cost.

Description

technical field [0001] The invention relates to the technical field of ecological treatment, in particular to a method for purifying polluted lake water. Background technique [0002] The characteristics of lake polluted water are mainly eutrophication, which often manifests as a lot of blue-green algae, turbid water with a slight odor, and some with obvious black odor. According to relevant data, among the large freshwater lakes in my country, Dianchi Lake, Taihu Lake, Chaohu Lake, and Hongze Lake have reached the level of eutrophication, while Poyang Lake and Dongting Lake are currently in the transition stage to eutrophication. The deterioration of lake water quality is mainly caused by the enrichment of a large number of nutrients imported from the outside world in the water body. [0003] At present, sewage interception, dredging, pure oxygen aeration, artificial wetland and other means are mainly used. in: [0004] 1. Pollutant interception is used to control extern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/34C12N1/20C12N1/16C12R1/125C12R1/225
Inventor 熊幼林赵亚勋简川湖熊盛贵
Owner DONGGUAN SHENGYUAN ENVIRONMENTAL PROTECTION TECH
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