A method for removing ammonia nitrogen and nitrite in water

A technology of nitrite and ammonia nitrogen, applied in chemical instruments and methods, water pollutants, biological water/sewage treatment, etc., can solve the problems that water quality is difficult to be purified, ammonia nitrogen and nitrite are difficult to be completely removed, etc.

Active Publication Date: 2019-08-16
广西中科润华环保科技有限公司
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for removing ammonia nitrogen and nitrite in water, to solve the problem that the water quality of industrial sewage or aquaculture water is difficult to be purified, and the ammonia nitrogen and nitrite in water are difficult to be completely removed

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Take 100 kg of anaerobic sludge with a bacterial content of 1×10 6 CFU / g, weight ratio water content 30%, 0.01 kg of chlorella algae mud and spore mixture, stir the two evenly, let stand for 10 minutes, then add 100 kg of water without disinfectant, water temperature 5 ° C, light intensity 3000 lux , Stir evenly, put it into a transparent glass container and stir it at a low speed for 10 minutes (the speed is lower than 15 rpm) for cultivation, until all the sludge turns from gray-black to green, then the sewage to be treated can be discharged into the container. The volume ratio of the bacteria and algae complex solution to the sewage is 0.0001:50, the ammonia nitrogen content in the sewage is 55mg / l, the volume of the bacteria and algae group accounts for 10% of the effective pool capacity, the hydraulic retention period is 24 hours, and the ammonia nitrogen removal rate reaches 80% at 28°C. The removal rate of nitrite reaches 92%.

Embodiment 2

[0015] Take 40 kg of anaerobic sludge and 60 kg of aerobic sludge, with a bacterial content of 4×10 8 CFU / g, weight ratio water content 85%, 0.3 kg of diatom mud and spore mixture, 0.2 kg of Chaetoceros moushii and spore mixture, stir the two evenly, let stand for 3 minutes, add no disinfectant, salinity 15 -25‰ water 1000 kg, stir again and pour it into a concrete sewage treatment tank, store the light intensity at 30000 lux, water temperature 25-40 ℃, stir at low speed for 120 minutes, until all the sludge turns from gray black to After gray or yellowish brown, the sewage discharged from mariculture to be treated can be discharged into the pool. The volume ratio of the bacteria and algae complex solution to the sewage is 1:1, the ammonia nitrogen content in the sewage is 25mg / l, and the volume of the bacteria and algae group accounts for the effective pool capacity. 5%, the hydraulic retention period is 24 hours, 28 ℃, the removal rate of ammonia nitrogen reaches 95%, and th...

Embodiment 3

[0017] Take 100 kg of aerobic sludge with a bacterial content of 1×10 9 CFU / g, weight ratio water content 95%, 60 kg of microalgae mud and spore mixture, stir the two evenly and let stand for 15 minutes, then add 300 kg of nitrogen-containing sewage without disinfectant to be treated, stir again and pour into In a concrete sewage treatment tank, keep the light intensity at 8000-10000lux, water temperature at 18-30°C, and stir at a low speed for 60 minutes. After all the sludge turns from gray-black to green, it can be discharged into the pool to be treated. For the sewage discharged from the pig farm after biochemical treatment, the volume ratio of the bacteria and algae complex solution to the sewage is 25:50, the ammonia nitrogen content in the sewage is 560mg / l, the volume of the bacteria and algae group accounts for 25% of the effective pool capacity, and the hydraulic retention period is 24 hours. At 28°C, the removal rate of ammonia nitrogen reaches 92%, and the removal ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
clearance rateaaaaaaaaaa
clearance rateaaaaaaaaaa
Login to view more

Abstract

The present invention discloses a method for removing ammonia nitrogen and nitrite from a water body. A large number of ammonia nitrogen and nitrite exist in sewage, the ammonia nitrogen and the nitrite in the water can be absorbed by unicellular algae so as to be removed, but the unicellular algae suspends in the water and is difficult to remove after the proliferation, such that the color of the water can exceed the standard. According to the present invention, active sludge and unicellular algae or the spores of unicellular algae are mixed to obtain a sludge-algae mixture, water is added to the sludge-algae mixture, proliferation culture is performed to obtain a bacterial algae complex solution, and the bacterial algae complex solution is added to sewage so as to remove ammonia nitrogen and nitrite from the water body; and by adding the unicellular algae to the active sludge, the bacteria contained in the active sludge and the unicellular algae form the bacterial algae complex under a certain condition, the unicellular algae is solidified in the sludge, and the ammonia nitrogen and the nitrite in the water body can be absorbed during the bacterial algae complex proliferation and metabolism process and then are removed from the water body in the filtration or sedimentation manner.

Description

technical field [0001] The invention relates to a method for removing ammonia nitrogen and nitrite in water, belonging to the technical field of sewage treatment. Background technique [0002] In the sewage treatment process, the traditional industrial sewage treatment method mainly adopts anaerobic and / or aeration to proliferate a large number of anaerobic bacteria and / or aerobic bacteria, but due to the limited absorption and removal rate of ammonia nitrogen by bacteria , Ammonia nitrogen in sewage has always been a common obstacle for sewage treatment plants to meet the discharge standards. For aquaculture, the water will continue to become eutrophic during the breeding process, producing a large amount of ammonia nitrogen and nitrite, which will lead to a sharp deterioration of water quality and seriously threaten the survival of aquaculture organisms. Therefore, ammonia nitrogen and nitrite Whether the salt can be removed has become a key factor in improving the surviv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/32C02F3/34C02F101/16
CPCC02F3/325C02F2101/16
Inventor 刘键
Owner 广西中科润华环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap