Combined enhanced treatment process for low-turbidity high-alga raw water
A process and raw water technology, which is applied in the field of combined enhanced treatment of low-turbidity and high-algae raw water, can solve the problems of filter layer penetration, filter material surface clogging, algae entering clean water reservoirs and pipe networks, etc., to make full use of geothermal resources and simplify The effect of saving production management and operating costs
A process and raw water technology, which is applied in the field of combined enhanced treatment of low-turbidity and high-algae raw water, can solve the problems of filter layer penetration, filter material surface clogging, algae entering clean water reservoirs and pipe networks, etc., to make full use of geothermal resources and simplify The effect of saving production management and operating costs
CN102674585AActive Publication Date: 2012-09-19SHANGHAI MUNICIPAL ENG DESIGN INST GRP
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[0010] The present invention will be further described below in conjunction with the accompanying drawings.
[0011] The invention is a combined enhanced treatment process for low-turbidity and high-algae raw water. Under normal conditions, the raw water 1 is first settled in the flocculation advection sedimentation tank 2 or the high-efficiency sedimentation tank 3, and then the air flotation tank 4 is used to remove algae. After being stored, it is sent to the water distribution pipe network 10 by the water delivery pump house 9 . When the turbidity of the raw water is high or the effect of sedimentation water is poor, after the algae removal by air flotation in the air flotation tank 4, it can be filtered by the homogeneous filter material air-water backwashing sand filter 5 or the security filter 6, and then filtered by the ultrafiltration membrane Group 7 further removes turbidity and algae, and the effluent is sent to the water distribution pipe network 10 by the water ...
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The invention discloses a combined enhanced treatment process for low-turbidity high-alga raw water. The treatment process is characterized in that according to raw water, the turbidity in winter is about 5NTU, and temperature less than 5 DEG C, or one liter of raw water contains more than one million algae in summer, and the treatment process comprises the following steps of: settling under the conventional condition by using a flocculation horizontal sedimentation tank or a high-efficiency sedimentation tank, performing air floatation by using an air floatation tank to remove algae, allowing outlet water to flow through an ultra filter membrane further to reduce turbidity and remove algae, adjusting storage by using a clear water tank, and feeding into a water distribution network by using a water feeding pump house. According to the low-turbidity and high-alga characteristics of the water quality of the raw water, the conventional coagulating sedimentation, air floatation, filter and ultra filtration processes are optimized and combined, and the utilization of geothermal resources of plant areas is fully considered, so that an enhanced conventional treatment system is formed. The combined process has the advantages that used land can be saved, the process can be optimized, the geothermal resources can be fully utilized, the production management can be simplified, and the water quality of the outlet water has obvious advantages.
Description
technical field [0001] The present invention is a water treatment combined enhanced process involved in water supply engineering, specifically a combined enhanced treatment process for raw water with low turbidity and high algae, which uses combined and enhanced conventional treatment for raw water with low temperature and low turbidity in winter and high algae in summer to achieve high-efficiency treatment The goal. Background technique [0002] The quality of surface water varies greatly in my country, and the difficulty of treating low-turbidity and high-algae raw water represented by lakes and large reservoirs is no less than that of high-ammonia nitrogen and high-organic matter micro-polluted water sources. During the low turbidity period in winter, the effect of coagulation and sedimentation is poor, causing the turbidity of the effluent water in the sedimentation tank to sometimes even be higher than that of the influent water, which increases the burden on the filtra...
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Patent Timeline
19 Sep 2012
Publication
CN102674585A
- IPC
- C02F9/04; C02F9/02; C02F9/10; C02F1/52; C02F1/24; C02F1/44
- Inventors
- 许嘉炯; 金晓云