Landscape lake water supplementing and purifying process

Abstract

The invention discloses a landscape lake water supplementing and purifying process, which belongs to the technical field of sewage treatment, and comprises the following steps of: removing organic pollutants and suspended matters in sewage by adopting a microbial purification method, oxidizing ammonia nitrogen into nitrate under the oxidation action of microorganisms, and removing the nitrate. According to the selected method, nitrate is denitrified into nitrogen in an anoxic environment, and high-efficiency removal of ammonia nitrogen is completed. Calcium carbonate is selected to be added when phosphorus in sewage is removed, hydroxyl calcium phosphate is generated by calcium ions of calcium carbonate and phosphate ions in water, hydroxyl calcium phosphate precipitates downwards, releaseof calcium ions by calcium carbonate on the lower layer is not affected, the method is scientific and reasonable, use is safe and convenient, no filtering device needs to be placed in the treatment process. The replacement cost of the filtering device is reduced, and meanwhile, the cleaning time of the filtering device is also saved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a landscape lake replenishment and purification process. Background technique [0002] Due to the limitation of the geographical environment, the water body of the landscape lake itself cannot exchange water with other water bodies, so when it is necessary to replenish water resources in the lake, water can only be pumped from the river and replenished into the lake. [0003] But in fact, due to the process of urbanization, the range of activities of residents has become wider and wider. Most residents near the river have discharged some domestic waste into the river. For example, washing powder will enter the river when washing clothes by the river, or Residents will pour some household garbage into the river, making the water in the river black and smelly, so such water cannot be replenished into the landscape lake. [0004] Judging from the current sewage treatment p...

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Problems solved by technology

[0003] But in fact, due to the process of urbanization, the range of activities of residents has become wider and wider. Most residents near the river have discharged some domestic waste into the river. For example, washing powder will enter the river when washing clothes by the river, or Residents will pour some household garbage into the river, making the water in the river black and smelly, so such water cannot be replenished into the landscape lake

[0004] Judging from the current sewage treatment process, most of them use filtering devices to purify sewage. Although filtering devices can effectively filter sewage, there are still shortcomings. It must be replaced after use, so the sewage cannot be treated during the period of replacing the filter device, and the time limit for the completion of sewage purification needs to be extended backwards. At the same time, during the filtration process, the impurities filtered out of the device must be regularly If cleaning is performed, the filter device also needs to stop filtering during the process of cleaning impurities, which increases the cost of filter device replacement and increases the time cost of filtration.

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