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Yuda Purification Tank

April 27, 2024

Yuda Purification Tank

Overview

The intelligent purification tank sewage treatment equipment is an efficient sewage purification treatment equipment with nitrogen and phosphorus removal function based on the advanced design concept of purification tank in Japan, Germany and other developed countries, combined with the characteristics of domestic rural sewage which with many impurities, high total nitrogen and phosphorus, and use A/A/0 process as the core technology. It can be buried underground to save land.

At the same time, it has the advantages of light weight, water resistance, corrosion resistance, long service life, small floor area, simple construction and installation, simple management, low operating costs, etc. It is widely used in rural domestic sewage treatment. The intelligent purification tank sewage treatment equipment includes two categories: decentralized and centralized. According to the size of the tank, SMC molding process or glass fiber reinforced plastic winding process shall be adopted.

Scope of application

The intelligent purification tank sewage treatment equipment is suitable for mountainous areas, rivers and lakes and other areas with difficult pipe network construction. Such as scattered farmers, expressway service areas, construction sites, pastoral areas, outposts, ports, etc.

Advantages

-A2O treatment process, stable effluent water quality -Simple installation, easy operation and maintenance -The gel sponge filler is used. The film hanging area is 3-4 times of that of ordinary PE filler, and rich in biomass. -The product is small in size, saves space and reduces construction costs -High structural strength of material, stable use in underground for 30 years

Process

Sewage (including food waste sewage, toilet flushing sewage and laundry sewage, of which toilet flushing sewage must be precipitated by septic tank) is collected by the pipe network and entered into the BUFFER TANK (provided by end user).
Then pumped into purification tank, through the anaerobic, anoxic and aerobic action of microorganisms, most of the pollutants in the sewage are removed and precipitated, and then discharged. Every 3-6 months, part of the sludge and slag at the bottom of the sedimentation tank is pumped out by suction truck, and the excess sludge can be used or be disposed in accordance with local laws and regulations.

Process Initiation

Oil separation sedimentation tank

It is a method of separating suspended substances from water by using the principle of gravity, removing suspended substances and purifying sewage. If the specific gravity of suspended solids is greater than that of sewage, it will settle, and if it is less than that of sewage, it will float.

Anaerobic tank

In an anaerobic environment, macromolecular substances are degraded to reduce the concentration of organic substances, and the activated sludge from the sedimentation tank enters at the same time. The phosphorus accumulating bacteria release phosphorus in an anaerobic environment, transform readily degradable COD and VFA into PHB, and ammonify some ammonia containing organic substances.

Anoxic tank (part-oxygen tank)

The primary function of this reactor is to remove nitrogen and serve as the pretreatment of aerobic biochemical treatment. Nitrate nitrogen is transferred from the aerobic reaction area through the internal circulation of the mixed solution. Some organics are degraded and removed by using nitrate as an electron acceptor under the action of denitrifying bacteria. Spherical fillers are installed in the anoxic tank.

Contact oxidation tank (aerobic tank)

Effluent from anoxic tank flows automatically to aerobic tank for biochemical treatment. Most organics in the original sewage are degraded and purified here. Aerobic bacteria take the filler as the carrier, use the organics in the sewage as the food, decompose the organics in the sewage into inorganic salts, and at the same time nitrify ammonia nitrogen and absorb phosphorus, so as to achieve the purification purpose. The nitrate nitrogen in the mixed liquor returns to the anoxic tank, and the phosphorus absorbed excessively in the sludge is discharged through the surplus sludge.

The survival of aerobic bacteria must have enough oxygen, that is, there is enough dissolved fluoride in the sewage to achieve the purpose of biochemical treatment. The air in the tank is provided by the aeration device (air pump). The tank uses a new type of filler with large surface area ratio, long service life, easy film hanging and corrosion resistance. The aeration device (air pump) is used to increase oxygen.

Sedimentation tank

The effluent from the biological contact oxidation tank flows automatically into the sedimentation tank to further precipitate and remove the fallen biofilm and some organic and inorganic particles. The sedimentation tank is based on the principle of gravity. When the sewage containing suspended solids flows from bottom to top, the matter is precipitated by gravity. A conical sedimentation area is set at the lower part, and the sludge is transported to the anaerobic tank by means of reflux.

Process Completion

Sparse single-family : Recommend 0.5T

Scattered retail type : Recommend 1-2T

Population concentration : Recommend 5-100T

Note: The following items are not allowed in the purification tank.

n Foreign objects

Foreign objects such as paper diapers, sanitary products, cigarette butts, etc.; paper other than special toilet paper are prohibited to flow into the purification tank. Otherwise, it will cause blockage and failure of the purification tank.

n Excessive detergent and soap

Excessive use of detergents and soaps will flow into the purification tank, which will cause the decline of the purification tank function and the generation of bubbles.

n Chemicals with strong chemical effects

The use of hydrochloric acid and other fungicidal solvents, bactericidal, acidic and alkaline agents should be controlled. Otherwise, the bacteria and microorganisms in the purification tank will be killed and exterminated. Please use neutral detergent and warm water to clean the toilet.

n Excess food residual oil

Excess food residue oil will increase the burden of the purification tank, resulting in the discharge to the natural environment when it is too late to even treat the drainage. The treatment method is to absorb the oil with newspapers before the food residue is poured.

Main Technical Parameters

Capacity m³/d	*LWH* mm	Floor Area m²	Material	Wall Thickness mm	Power W	Weight kg
0.5	1950×1170×1080	12	SMC Mold Casting	4~5	38	110
1	2400×1300×1400	18		6~7	45	180
2	2130×1150×1650	18		6~7	55	200
5	2420×2010×2000	25		7	110	520
8	3420×2010×2000	30		7	110	650
10	4420×2010×2000	33		7	170	780
15	5420×2010×2000	43		7	220	910
20	7420×2010×2000	52		7	350	1200
25	8420×2010×2000	60		7	350	1330
30	10420×2010×200 0	65		7	470	1600
40	￠2500×8500	75	Winding glass fiber reinforced plastic	10	750	2500
50	￠2500×10500	85	Winding glass fiber reinforced plastic	10	1500	3000
Capacity m3/d	*LWH Meter*	Floor Area m2	Materials	Wall Thickness mm	Power KW	Weight Kg
5	Φ1.5*3.9	16	Mold Casting PP	15	5.7	410
10	Φ1.5*4.5	18		15	5.7	450
15	Φ1.5*5.5	20		15	5.7	600
20	Φ2*4.9	23		15	5.7	700
30	Φ2*6.1	26		20	5.7	1,000
40	Φ2*9	31		21	5.7	1,400
50	Φ2*10.6	34		22	7.5	1,630

Please note that the table does not include above-ground materials made from carbon steel, but we can customize them based on customer preferences.

Influent water quality parameters of intelligent purification tank

1) Raw water quality: ( According to conventional domestic sewage )

Serial	Project Index	Water influent standard
1	pH*	6~9
2	chemical oxygen demand（COD）*（mg/L）	≤400
3	biochemical oxygen demand（BOD）*（mg/L）	≤200
4	suspended solid concentration（SS）*（mg/L）	≤220
5	total nitrogen（TN）*（mg/L）	≤20

2) Discharge Water Quality

Pollutants	BOD5(mg/L)	CODcr(mg/L)	SS(mg/L)	NH3-N(mg/L)	PH
Index	≤20	≤60	≤20	15	6-9