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内蒙古污水处理

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Inner Mongolia wastewater treatment spray painting wastewater treatment process:

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Inner Mongolia wastewater treatment spray painting wastewater treatment process:

作者: Release Date: 2018-09-27 Author: Click:

Inner Mongolia wastewater treatment spray paint wastewater treatment process: Paint spray wastewater first passes through the dross separation tank, removes impurities such as scum and slick oil from the wastewater, enters the adjustment tank for homogenization, adjusts the amount of water and water quality, and is then lifted to the air flotation device by a pump. After adding flocculants and flocculants in the air flotation device, after solid-liquid separation, the wastewater is combined with the pretreated domestic sewage and canteen sewage into the integrated conditioning tank, and the scum is discharged into the sludge concentration tank. In the comprehensive adjustment tank, the low-concentration, good biochemical biochemical sewage and the high-concentration biodegradable spray paint wastewater are fully homogenized and the amount of water is adjusted. Then the pump is lifted to the anaerobic tank, and the sewage is discharged into the anaerobic tank. Phosphorus-containing reflux sludge enters simultaneously, and a large amount of phosphorus is released in the anaerobic tank while some organic matter is ammoniated. The water treated by the anaerobic tank flows into the anoxic tank from which the denitrifying bacteria will return to the belt. The incoming nitrate is converted into nitrogen and discharged into the atmosphere through biological denitrification, so as to achieve the purpose of denitrification. The effluent from the anoxic tank enters the two-stage aeration tank for aerobic treatment. Due to the high concentration of wastewater, the residence time is 9 to 10 hours for biodegradation, nitrification, and absorption of phosphorus. The sludge produced by the biochemical system is pumped to the anaerobic tank by a sludge pump, and the sludge in the system is digested and decomposed by microorganisms to reduce the sludge discharge. The remaining sludge is discharged into the sludge thickening tank, after being concentrated to reduce the volume, it is pressed into a mud cake by a belt filter press and then transported for disposal. The filtrate is returned to the conditioning tank.

Spray paint wastewater treatment: main structures and equipment

According to the discharge law of the wastewater, the regulation tank needs the stability of the water quality and quantity of the subsequent processing structures. The regulation tank is set up to store the residual water with a large amount of water caused by the change in the amount of sewage, and reduce the peak load to facilitate the next processing and reduce the subsequent processing. The volume of the structure and saving investment costs. The effective volume of the Inner Mongolia Sewage Treatment Production Wastewater Regulating Pool is 50m3, and there are two submersible pumps with a flow rate of 10m3 / h. The effective volume of the integrated wastewater conditioning tank is 250m3, and there are two submersible pumps with a flow of 30m3 / h, one for each and one for the reserve.

Suspended solids and color of the wastewater produced by air flotation devices are relatively high. Wastewater treatment in Inner Mongolia contains a large amount of paint slag and organic impurities. Since the density is smaller than water, it is not appropriate to use physical flocculation sedimentation. Air flotation relies on micro-bubbles to make the flocs formed by fine particles in the wastewater adhere to the micro-bubbles, thereby reducing the apparent density of the flocs, and relying on buoyancy to make them float, thereby forcibly floating the flocs and achieving solid-liquid separation. , Purification of wastewater. Add coagulant and flocculant when sewage enters air flotation machine. The air flotation device has a processing capacity of 10m3 / h, a reaction time of 3-5min, a residence time of 30min, and a surface load of 5m3 / (?). m2 h

The main function of the anaerobic tank is to use waste water in the anaerobic tank to fully mix and contact with the returning sludge. The acid bacteria in the returning sludge absorb and remove a part of the organic matter in the sewage, and at the same time release a large amount of phosphorus, initially decompose the organic pollutants, and precipitate and suspend. Materials to facilitate the biochemical treatment of the latter stage. The effective volume of the anaerobic tank is 120m3, the residence time is 4h, and elastic packing is used.

Anoxic pond is in anoxic pond. The mixed solution of anaerobic tank effluent and aerobic tank reflux is fully contacted by a submersible pump. A large amount of NO2-N in the reflux mixture is reduced to N2 to achieve the purpose of denitrification. The effective volume of the hypoxic tank is 60m3, the residence time is 2h, and semi-soft packing is used.

The aerobic tank secondary aerobic treatment is the core part of the whole system. Here, biochemical reactions such as biological oxidation of organic matter, ammoniation of organic nitrogen, and nitrification of ammonia nitrogen are performed. And so on. The contact tank is filled with a combination of fillers, and some microorganisms adhere to and grow on the surface of the fillers in the form of biofilms. Inner Mongolia wastewater treatment parts are flocculently suspended and grow in water. A microporous aeration head is used to aerate the bottom of the pond. The oxygenated sewage immerses all the filler and flows through the filler at a certain speed. The biofilm is covered on the filler, and the sewage is in contact with the biofilm. Under the action of the biofilm microorganism, the sewage is purified. Commonly used direct-flow blast aeration systems are characterized by direct aeration under the filler, and the biofilm is impacted and agitated by the upward airflow, accelerates the shedding, and renews, so that it often maintains good activity and can avoid blockage. Part of the effluent from the aerobic wastewater treatment tank in Inner Mongolia is returned to the anoxic tank, and some enters the sedimentation tank. The effective volume of section A is 120m3, the dwell time is 4h, and the gas-water ratio is 15: 1; the effective volume of section B is 180m3, the dwell time is 6h, and the air-water ratio is 12: 1.

内蒙古污水处理

URL of this article: http://onasetfilm.com/news/375.html

Keywords: Inner Mongolia sewage treatment

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